基坑围护、降水与土方开挖专项施工方案

基坑围护、降水及土方开挖工程专项施工方案SpecialConstruction Schemeof Foundation DitchSupport,Precipitation andEarthworkExcavation Engineering

一、工程概况Project Overview概述Summary工程名称上海联恒异氟酸脂有限公司扩建项目工艺装置土建工程、

1.1MDIProject NameLian heng isocyanate resin co.,LTD.Shanghai MDI expansion devicesis civil工程地址上海市漕泾化工区楚华路号engineering25建设单位上海联恒异氟酸脂有限公司Project Address:Shanghai caojingchemical OuChuHuaroad no.25设计单位上海科元燃化工程设计有限公司The construction units:Shanghai lianhengisocyanate resin co.,LTD勘察单位上海岩土工程勘察设计有限公司Design unitShanghai yuancombustion engineeringdesign co.,LTD施工单位中国核工业中原建设有限公司Prospecting units:Shanghai geotechnicalengineering surveyand designco.,LTD监理单位上东洋工程上海有限公司Construction unitChina nuclearindustry zhongyuanconstruction co.,LTD工程概况本工程位于上海市漕泾化工区楚华路号，上海巴斯夫Supervision units:the Orientalengineering Shanghaico.,LTD聚氨酯有限公司内的地块上而上海联恒异氧酸脂有限公司扩建项目工艺装置土建

1.2Project Overview25工程，由合成单元、初期雨水池、初期雨水池、处理单元、雨淋阀室和管A400MDI架五大单元组成MDI MDIMDA MDA25,This projectis locatedin Shanghai City CaojingChemical DistrictChu HuaRoad No.Shanghai BASFPolyurethane Co.Ltd inA400block.And ShanghaiLianheng ISOcyanate greaseCo.,Ltd.MDIexpansion project processdevice forcivil engineering.By synthesizingMDI unit,MDI earlyrain pool,MDA in the earlyrain pool,MDA treatmentunit,the deluge valve chamberand tube fra基me坑fi概ve况unit composed.

1.3FoundationDitchOverview合成单元

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3.1光M气DI隔离舱、Syn吸the收ti及c u尾nit气处理的垫层底标高板底厚为垫层厚建筑面积为本工程设计标高为所应对的绝1HCL.

2.25m,1200mm,100mm,

638.44m

2100.000m±

0.000collapse,excavation mustsupport the use of steel in order to ensure soilstability.The excavationproject large,high construction difficulty.Give fullconsideration topitdigging,piling factors,access roadsand otherareas,we mustuse thebest construction methods,areasonable arrangement.To ensure the smoothconstruction projectto the end.Before diggingbegan,previously laidin earth-moving truckon pitroad withgood roadboards to ensure thesmoothflo施w工of准ea备rt工hm作oving vehicle.

5.3测量工作Construction preparationwork根据建设单位提供的坐标点及水准基点进行定位放线，遵循〃从整体到局部〃的原则，建

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3.1Measurement work立施工平面测量控制网，在现场选择便于观测又较为永久稳固的地点设置若干个水准高程测量控制点，做好轴线控制点和高程控制点的保护工作According to the constructionunits toprovide thecoordinates of the point and benchmarkforpositioning lineand followfrom thewhole to the local principle,building constructionplanesurveying control network,the in site selectionfor observationand moresecure permanent placesetting somelevel ofelevation measurementcontrol,do goodaxis controlpoint andelevation水平运输设备control pointsof theprotection work.根据施工顺序，在土方开挖前先准备好基础施工过程中所有材料，特别是进场前对挖机、

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3.2Horizontal transportequipment运输车、装载机等各种机械设备进行检修，建立现场仓库机具管理体系，确保机械设备的完好率做好施工机械的检修、保养工作，确保机械设备运转正常According to the construction sequence,before the excavation tofoundation constructionprocessin allmaterials,especially before the approachof diggingmachines,transportationvehicles,loaders,etc.all kindsof machinery and equipmentmaintenance,establish the sitewarehouse equipmentmanagement system,ensure theintegrity rateof themachinery andequipment.Do the construction machineryrepair;maintenance work,to ensurethe normal施工道路及清理operation of machinery and equipment.各基坑施工时沿坑顶排水沟设置施工道路，施工道路宽沿各基坑周边设置人行斜道，

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3.3Road constructionand cleanup人行斜道供基坑作业时人员上下使用人行斜道采用钢管搭设，斜道与基坑水平面成夹角，5m并设置防滑设施施工机械、设备、周转材料提前进场60基坑内设置临时汽车运输坡道，坡道宽米，路面采用建筑垃圾填筑夯实，再铺设道板，坡道两边及采用度放坡，正面出土坡道采用放坡，土层用挖机夯实，在1030cm土方开挖施工时，要定时对汽车坡道进行检查，防止坡道土方松散、出现滑坡现象451:

1.2L3The gutteralong the pit whenfoundation pitconstruction on top setconstruction roads,construction road5m wide.Along eachset around the pedestrianchute,the pedestrianramps forfoundation pit homeworkpersonnel usethe upand down.Pedestrian rampsset-up,the adoptionsteel pipe chuteand foundation pit horizontalAngle60°,and setthe anti-slip facilities.Construction machineryandequipment,turnover materialsin advance.Set uptemporary motortransport ramp,inside of the foundation pit slope10meters wide,the roadby30cm compaction,construction wastereclamation againlaid but,on bothsides of theramp andUSES45degrees of1:

1.2put slope,positive slope excavated slopeusing1:3,the soil,with driversto consolidateduring earth excavation construction,regular inspectionon ramp,toprevent theo临cc边ur围re护nce oflandslides rampearthwork looseand phenomenon.5施.3工.4现场配备必L要im的b堵en漏cl设os备ur和e材料、排水设备、砂包、钢管、木材等以备急需土方开挖后，及时做好基坑的临边围护工作，采用黄黑油漆涂刷钢管，围护高米，立杆间距米，进行封闭，悬挂安全警示标语

1.23Equipped withnecessary pluggingequipment andmaterials to the construction site,drainage equipment,sand bags,such assteel tube,wood for a rainyday.Earthwork excavation,do a good jobin the side of the foundation pit retainingin time,using blackpaint coatingsteelpipe,retaining high

1.2meters,the verticalbar spacingof3meters,closed,hanging safetywarningsign施s.工机械配备和劳动力组织

5.

3.5主要施工机械及设备Construction machineryand labororganizations5施.3工.5机.1械设备一览表The main construction machineryand equipmentConstructionmachineryandequipment list序号设备名称数量备注No.D挖e掘vic机e nameNu台mber remarks1PC2602Excavator PC260Two sets道板块210R运o土ad车bo辆ard10辆blocks36套（暂定）Earth movingvehicle6cars轻型井点46）Light well point钢板桩6若s干et块s[tentative5S振te动el锤sheet pileSe台veral blocks6Vibration2台暂定h水am泵mer Twosets47water pumpFoursetstentative劳动力组织5劳.3动.5力.2组织图Labor organizationLabororganization chart人员数量序号工种No.Type ofworkThe numberof people木工架子工1woodworker102电工scaffolder5Electrical Technician3机修工24土方Mechanic25施工现场总平面E布ar置thwork

255.

3.6人员上下通道General layout of construction site5沿.3各.6基.1坑每隔米设置Pe一rso个n人ne员l a上cce下ss通道，同时根据现场实际需要，适时增加或者减少通道人员通道采用钢管搭设，与地面成夹角，宽度踏步铺设松木板并钉防滑条，钢50管护栏高度米60l.2m,运输通道

1.25每.3个.6基.2坑边设置施工道路，提供人员和运输车通行，道宽5mEvery50meters along the foundation pit set a personnelor channel,at the same timeaccording to actualneeds,timely increaseor decreasethe channel.Channel set-up,the adoptionsteelpipe and the groundinto60°Angle,width

1.2m,step laidpine woodand nailspreventslippery,steel guardrailheight

1.2meters.

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3.

6.3transport corridorEachco堆ns场tru设ct置ion roadfoundation pit edge set,personnel andvehicle traffic,5m wide.5由.3于.6本.4工程场地施Y工ar面d s狭et窄tin，g一部份土方堆放于业主指定地方钢筋、模板、钢管等材料堆场考虑设置在距基坑以外，使得尽量远离基坑，确保基坑围护安全20mDue to the narrowconstructionsite,a part of theearth ispiled upin the designated areasofthe owner.The steel bar;formwork,steel tube and othermaterial yardare consideredto setupthe foundationof20m,which makesit possibleto keepaway from the foundation pit andensure施工出入口安全文明布置the safety of foundation pit.

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6.5Construction safetycivilization layout所有车辆进入施工场地限速公里/小时、施工道路出口放置警示标志并安排专人进行交通指挥和疏通所有土方车辆出场全部采用油布覆盖严实10All vehiclesentering the constructionsitespeed10km/hour;road constructionexportwarning marksand arrangepersonnel placementfor trafficcommand anddredging.All弃土,点落实earthmoving vehiclesare allmade ofcloth coversealed.5弃.3土.7地点由业主指定Abandoned soilpoint implementation根据上海市有关文件Ab，an结do合ne现d场lan施d工sit实es际de情si况gn，ate在d开by工th前e必ow须ne和rs有.关部门联系,搞好协调工作，办理好所有有关手续，以保证顺利开工538According toShanghaiCity,the relevantdocuments,combined with the actualsituation of the constructionsite,must bein contact withthe relevantdepartments to do agood jobin coordination,for all the relevant procedures toensure六sm、oo施th工st方ar法t.和技术措施围护结构施工方案Construction methodsand technicalmeasures

6.1护坡施工方案Construction schemeof retainingstructure6分.1层.1分段开挖，即时S进lop行e边pr坡ote围ct护ion constructionschemeLayered andsegmented excavation,immediate slopeprotection.施工注意事项

①施工

6.1期.1间.1，不得在基坑顶面Co堆ns载tru，ct以io免n N施o工tes期间边坡坍塌，施工完成后，避免重车沿基坑边行驶，堆载控制在

②在没有完成钢板2支0K护N/以it前f，不得进行下一层深度开挖

③施工用材料必须符合设计要求

④严格控制基坑周围地面荷载，对基坑周边地上建筑、道路工程等应进行监测，必要时可采取预防保护措施

⑤严格按照设计方案施工⑴During theperiod of construction,fromthe top of the stackof foundation pit,so astoavoid thecollapse ofslope during the construction,construction completed,avoid heavycar along2the sideof foundation pit,heap loadcontrol in20kn/m.⑶2B didntfinish the steel support,and maynot be onto the nextlayer ofdeep excavation.Construction materialsmust conform to the design requirements4Strict controlfoundation pitground load,on the ground aroundthe building,roadengineering monitoring,should thepreventive protectionmeasures when necessary.5钢板i桩ns施tr工ict accordance with the design schemeof the construction.6基.1坑.2开挖四周采用Ste钢el板sh柱ee支t p护ileco钢ns板tru桩cti就on位后采用履带式液压挖土机带或的液压振锤的锤机施打，施打前一定要熟悉地下管线、构筑物的情况，认真放出准确的VH-2000VH-3000支护桩中线

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2.1Around the foundation pit excavation usingsteel plate column support.Steel sheetpile in placeafter thecrawler typehydraulic excavatorwith VH-2000or theVH-3000hydraulic钢板桩的设置位vibration hammerhammer machineplay,before itmust befamiliar with the underground置要符合设计要求，便于基础施工，即在基础最突出的边缘外留有支模、拆模的余地基坑pipelines and structures,serious releaseaccurate supportingpile center line.1护壁钢板桩的平面布置形状应尽量平直整齐，避免不规则的转角，以便标准钢板桩的利用和支撑2设置各周边尺寸尽量符合板桩模数整个基础施工期间，严禁碰撞支撑，禁止任意拆除支撑，禁止在支撑上任意切割、电焊，也不应在支撑上搁置重物31Location of steel sheet pile tocomply with the design requirements,is advantageousforthe foundationconstruction,namely on the edge of the foundations mostprominent outsidethemold,open moldleeway.2The foundation pit wallplane arrangementof the steel sheet pile shapeshould beflatand tidyas far as possible,avoid irregularAngle,in order to standardthe useof steel sheet pile andsuppor⑶t Settings.The peripheralsize as faras possible inline with the sheet pile modulus.During thewhole foundationconstruction,it isforbidden tocollision,forbidden todismantle,banned o钢ns板up桩p施or工ta的rb顺itr序ary cutting,welding,should notput weighton thesupport.钢板桩位置的定位放线

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2.2The orderof the steel sheet pile construction挖沟槽1安装导梁2施打钢板桩3拆除导梁4清理锚杆处标高的土方5挖土6排污管、渠箱施工7回填石屑8拔除钢板桩91⑴0The positioningof the steel sheet pile positionpay-off⑶DGrooveInstallation guide beam⑸4For asteel sheet pileThe demolitionof nose6Clean up the anchorin the elevation of earthwork7Digging8Drainage pipe,channel construction9Backfilling stone chips10Ste钢el板sh桩ee的tp检ile验、吊装、堆放钢板桩的检验

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2.3Steel sheet pile test,lifting,stacking对钢板桩，一般有材质检验和外观检验，以便对不合要求的钢板桩进行矫正，以减少打桩过1Steel sheet pile test程中的困难

①外观检验包括表面缺陷、长度、宽度、厚度、高度、端部矩形比和平直度等项内容检查中要注意对打入钢板桩有影响的焊接件应予以割除；害孔、断面缺损的应予以补强；若钢板桩有严重锈蚀，应测量其实际断面厚度原则上要对全部钢板桩进行外观检查a bI

②材质检验对钢板桩母材的化学成分及机械性能进行全面试验包括钢材的化学成分分析，c构件的拉伸、弯曲试验，锁口强度试验和延伸率试验等项内容每一种规格的钢板桩至少进行一个拉伸、弯曲试验每重的钢板桩应进行两个试件试验钢板桩吊运

20.50t装卸钢板桩宜采用两点吊吊运时，每次起吊的钢板桩根数不宜过多，并应注意保护锁口免2受损伤吊运方式有成捆起吊和单根起吊成捆起吊通常采用钢索捆扎，而单根吊运常用专用的吊具钢板桩堆放钢板桩堆放的地点，要选择在不会因压重而发生较大沉陷变形的平坦而坚固的场地上，并便于运往打桩施工现场堆放时应注意3

①堆放的顺序、位置、方向和平面布置等应考虑到以后的施工方便；

②钢板桩要按型号、规格、长度分别堆放，并在堆放处设置标牌说明；

③钢板桩应分层堆放，每层堆放数量一般不超过根，各层间要垫枕木，垫木间距一般为・米，且上、下层垫木应在同一垂直线上，堆放的总高度不宜超过米5342For steel sheet pile,generally speaking,there arematerial inspectionand appearance,sothat acorrection of the steel sheet pile of blatantly,in order to reduce the difficultiesin the processof pile⑴driving.Visual inspection:including surfacedefects,length,width,thickness and height,endrectangular straightdegree andso ona contentthan peace.Inspection shouldpay attentionto:aimpact into the steel sheet pileof weldmentsshould becut out;B cutholes,section defectshouldbe reinforcement;C]if thereis seriouscorrosion steel sheet pile,shall bethe actualcross sectionthicknessmeasurement.In principlefor allsteel sheet pile for appearance inspection2Material inspection:the chemical composition andmechanical propertiesof steel sheetpile toconduct acomprehensive test.Including steelchemicalcompositionanalysis,tensile,bending test,the lockstrength andelongation test,etc.Each kindof specificationof the steel sheetpilein atleast onetensile andbending test.Every20to50t heavysteel sheet pile should be twospecimenexperiment was carried out.3The steel sheet pileliftingLift loadingand unloadingof steel sheet pileappropriate USEStwo points.Every timewhenlifting,lifting of steel sheet pile numbershould not be too much,and shouldpay attentiontoprotect thelock fromdamage.Successful bundleof lifting and single lifting liftingway.Bales liftingusuallyuse wirestrapping,and commonlyused specialsingleliftingsling.4The steel sheet pile pile up:the locationof thesteel sheet pilepile up,want tochoose inwillnot happenby heavypressure isbigger on the flat and solidground subsidencedeformation,and easyto pile driving constructionsite.When stackingshould be paid attentionto:1]S order,position,direction andplane layoutshould beconsidered after the constructionisconvenient;5The steel sheet pile to pile up separatelyaccording to the model,specification andlength,and in a settingpileupsigns;6Steel sheet pile should be layeredstack,each layerstacking numberis generallynotmore than5root,between eachlayer tocushion sleeper,stow-wood spacingis usually3to4meters,and theupper and the lowerchock should beon thesamevertical line,should not be piledupthe totalheigh架to的fm安o装re than2meters.在钢板桩施工中，为保证沉桩轴线位置的正确和桩的竖直，控制桩的打入精度，防止板桩的

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2.4屈曲变形和提高桩的贯入能力，一般都需要设置一定刚度的、坚固的导架，亦称“施工围楝”导架采用单层双面形式，通常由导梁和围楝桩等组成，围棚桩的间距一般为

2.米，双面围擦之间的间距不宜过大，一般略比板桩墙厚度大〜5~

3.5安装导架时应注意以下几点815mm采用经纬仪和水平仪控制和调整导梁的位置导梁的高度要适宜，要有利于控制钢板桩的施工高度和提高施工工效1导梁不能随着钢板桩的打设而产生下沉和变形2导梁的位置应尽量垂直，并不能与钢板桩碰撞34The installationof

6.

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2.4guide frameDuring the construction of steel sheet pile,the pile driving axisposition in orderto ensurethe correctand verticalpile,control the pile intoprecision,to prevent the sheet pile bucklingdeformationand improve the pilepenetration ability,usually needto setup certainrigidity,strongguide rack,which isalso calledconstruction purlin around.〜Guide in the form of singledouble-sided,usually by the noseand purlin around pile,etc,wai〜purlin pilespacing generallyis

2.

52.5meters,double-sided wipearoundthespacing betweenshouldsnot betoo large,slightly largerthan the thickness of the sheet pile wallbetween815mm.When installing guide shouldpay attentionto thefollowing:1USES thetheodolite andlevel controland adjustthe position of theguide beam.2Appropriate to the heightof theguidebeam,to helpcontrol the construction heightofthe ste⑶elsheet pileandimprovethe construction efficiency.Guide beamcannot withthe drivingof steel sheet pilesubsidence anddeformations.4The locationof thenose should be verticalasfaraspossible,do notcollide withthe steelsheet pile.钢板桩施打钢板桩施工关系到施工止水和安全，是本工程施工最关键的工序之一，在施工中要注意以下

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2.5Steel sheet pile施工有关要求Steel sheetpile constructionis related to waterand security,is theone of the keyworkingprocedure inengineering construction,attention should bepaidto the construction of the全线钢板桩采用挖土机带震动锤机施打，施打前一定要熟悉地下管线、构筑物的情况，related requirementsinconstruction:认真放出准确的支护桩中线1打桩前，对钢板桩逐根检查，剔除变形严重的钢板桩，不合格者待修整后才可使用在插打过程中随时测量监控每块桩的斜度不超过当偏斜过大不能用拉齐方法调正时，2拔起重打32%,钢板桩施打4第一根钢板桩插打吊起钢板桩，打开机头夹板夹住桩头，垂直后在设计位置通过打桩机的液压振动锤将钢板桩插入至设计深度后续钢板桩插打第一根桩打插完成以后，后续钢板桩沿前一根桩的扣槽插入至设计深度总之，施工中应根据具体情况变化施打顺序，采用一种或多种施打顺序，逐步将板桩打至设计标高，一次打入的深度一般为米钢板桩打设的公差标准如下表所示钢板桩打设公差标准项目允许公差板桩轴线偏差土桩顶标高土

0.5-

3.0板桩垂直度10cm10cm打入桩后，及时进行桩体的闭水性检查，对漏水处进行焊接修补，每天派专人进行检查桩1%体6⑴All steel sheetpileused excavatorwith vibration hammer machineplay,before itmustbe familiarwiththeunderground pipelinesandstructures,serious releaseaccurate supportingpilecenter line.2Before piledriving,thesteel sheetpileby rootexamination,eliminate deformationserioussteel sheetpile,are noteligible tojust can use afterfinishing.；3In thrustmeasurement atany timeduringthe process ofmonitoring slopeis lessthan2%of each pile thetiming when the deflectionis toobig cantuse zazimethod,liftingapull.[4The steel sheetpileaccording to:First rootsteelsheetpile inserted:hoist steelsheetpile,open thenose clipspile headsplints,after thevertical designposition throughthe hydraulicvibration hammerpile-driver insertsteelsheetpileto designdepth.Subsequent steelsheetpilein play:after the completion of the firstroot pile inserted,subsequent steelsheetpilealong theformer abuckle grooveinsert tothe designdepth of the pile.；In short,the constructionshould bechange according tothe concrete situationin thesequence,using oneor moreplay order,gradually willplay tothe sheetpile design elevation aintothe depth of thegenerally

0.

53.0meters.Steel sheetpiledrivingtolerance standardshown inthefollowing table.Steel sheetpiledrivingtolerance standardProjectthe allowedtoleranceSheet pileaxis deviationsoil10cm10cm pile top elevationsoilSheet pilevertical degreeis1%6driven pile,the pileof closedwater inspectionsin a timely manner,to weldrepair leaks,assign personn围e楝l to、in拉sp杆ect pile body everyday.6为.1加.2强.6钢板桩墙的整P体ur刚lin度,r，od沿钢板桩墙全长设置围楝，围楝用号槽钢焊接在钢板桩上围楝槽钢设置两道，钢板桩顶部一道，基坑支护钢板桩中部一道30拉杆采用

①钢筋，用电焊焊接，一端焊接在钢板桩槽钢围楝上，另一端固定在后端处打入地底的钢板柱上，每根拉结的钢筋固定在后端一根钢板柱上256m3To strengthen the overallstiffness ofsteelsheetpile wall,along thetotal lengthofsteelsheetpile wallset aroundthe purlin,wai purlinwith30channel steelwelded on thesteelsheetpile.Waipurlin steelchannel settwo way,steelsheetpiletop,foundation pitsupporting steelsheetpileinthe middleof a.Rod using

①25reinforced withwelded wirewelding,the weldingon thesteelsheetpilechannel steelpurlin aroundat oneend and the otherend fixed on the back endinto theundergroundsteel columnon6m place,every threeroot Rachelsteelbarfixedon theback end ofapillar of thesteelplate.钢板桩的拔除基坑回填后，要拔除钢板桩，以便重复使用拔除钢板桩前，应仔细研究拔桩方法顺序和拔

6.

1.

2.7Steel sheetpile pulling桩时间及土孔处理否则，由于拔桩的振动影响，以及拔桩带土过多会引起地面沉降和位移，会给己施工的地下结构带来危害，并影响临近原有建筑物、构筑物或底下管线的安全设法减少拔桩带土十分重要，目前主要采用灌水、灌砂措施After the foundationpitbackfill,to pull out steelsheetpile,in orderto reuse.Before pullingsteelsheetpile,it isnecessary tostudy carefullypiles methodsequence andpiles and soil holeprocessingtime.Otherwise,because of the influenceof thevibration of the pile drawing anddrawingtoomuchwill causeground settlementand displacementof the pile withsoil,has aharmfuleffect onself construction of undergroundstructure,and affect the adjacentbuildings,structures ororiginal underthe safety of thepipeline.Try to reduce the piles withsoil isvery拔桩方法important,at presentmainly adoptsmeasures,sand filling.本工程拔桩采用振动锤拔桩利用振动锤产生的强迫振动，扰动土质，破坏钢板桩周围土的粘聚1力以克服拔桩阻力，依靠附加起吊力的作用将桩拔除拔桩时应注意事项

①拔桩起点和顺序根据沉桩时的情况确定拔桩起点，必要时也可用跳拔的方法拔桩的2顺序最好与打桩时相反

②振打与振拔拔桩时，可先用振动锤将板桩振活以减小土的粘附，然后边振边拔对较难拔除的板桩可先用柴油锤将桩振下再与振动锤交替振打、振拔有时，为及时回填拔桩后的土孔，当把板桩拔至比基础底板略高时暂停引拔，用振动锤振动几分钟，尽量让土100—300mm,孔填实一部分

③起重机应随振动锤的启动而逐渐加荷，起吊力一般略小于减振器弹簧的压缩极限

④对引拔阻力较大的钢板桩，采用间歇振动的方法，每次振动振动锤连续不超过15min,

1.5ho⑴pile drawingmethodThe engineeringpiles usingvibration hammerpile drawing:using theforced vibrationofvibrating hammer,disturbed soil,destruction ofsteelsheetpile surroundingsoil cohesiveforce toovercomethe resistanceof pile,depend onthe effectof additionallifting forcepull outpile.2the mattersshould bepaid attentionto whenpile drawing1starting pointand pullorder:according tothe situationof piling piles startingpoint,whennecessary,can alsobe usedto jumpmethod.Best andpilingpiledrawing orderinstead.2shaking andZhenBa:piles,can usefirst vibration hammer willlive toreduce soiladhesionsheet pilingvibration,and vibrationwhile drawing.For moredifficult to pullout of sheetpilecan usefirst dieselhammer willpile vibrationunder100-300-mm,alternating withvibrationhammer vibrating,ZhenBa again.Sometimes,for thetimely backfillsoil afterpiledrawinghole,whenthesheetpilepull toslightly more than the foundation slabsuspends thepull,vibrationhammer vibrationforafew minutesand try to getpartof the soilhole filled.对标高为吴淞标高场地内部自然地面绝对标高约为即为相对标高则开挖深度为其中，水池的垫层底标高板厚为垫层厚建筑面积+

4.500m,+

4.500m,±

0.000m,为本工程设计标高为所应对的绝对标高为吴淞标高场地内

2.25m-

5.90m,1000mm,100mm,部自然地面2绝对标高约为即为相对标高则开挖深度为o

31.59m

100.000m±

0.000+

4.500m,+

4.500m,±

0.000m,

5.9m⑴The phosgenecompartment,HCL absorptionand tailgas treatmentof cushion bottomelevation of

2.25m,the bottom of theplate thickness is1200mm,cushion thickness of100mm,with aconstruction areaof

638.44m squaredThis engineeringdesign elevation of

100.000m by

0.000mm tocope withthe absolutelevel ofwusong elevation+

4.500m,field insidethe naturalground elevation is about

4.500m+absolutely,is therelative elevation+/-

0.000m,theexcavation depth of

2.25m.Pool ofcushion bottom elevation of

5.90m,the thicknessis1000mm2cushion thickness of100mm,with aconstruction areaof

31.59m.This engineeringdesignelevation of

100.000m by

0.000mm tocope withthe absolutelevel ofwusong elevation+

4.500m,field insidethe natural ground elevation is about

4.500m+absolutely,is therelative elevation+/-

0.000m,theexc压av缩ati机on的d垫ep层th底of标

5.高9m板.厚为垫层厚建筑面积为本工程设计标高为所应对的绝对标高为吴淞标高场地内部自然地面2绝o2HCL1000mm,100mm,

127.02m对标高约为即为相对标高则开挖深度为

100.000m±

0.000+

4.500m,o+

4.500m,±

0.000m,

1.18m2HCL compressorcushion bottom elevation of

1.18m,thicknessis1000mm,cushion2thicknessof100mm,with aconstruction areaof

127.02m,This engineeringdesign elevation of

100.000m by

0.000mm tocope withthe absolutelevel ofwusong elevation+

4.500m,field insidethe naturalgroundelevationis about

4.500m+absolutely,is therelative elevation+/-

0.000m,the excava氯tio苯nd冷e却pth、o氯f1苯.1精8m微.的承台垫层底标高承台厚度垫层厚度；地梁的梁顶标高根据地梁的截面尺寸对梁底进行开挖，其垫层厚度建筑面积为3-

2.17m,1300mm,100mm本工程设计标高为所应对的绝对标高为吴淞标高场地内-

0.77m,100mm,部自然地面绝对标高约为即为相对标高则开挖深度为

2861.71m

2100.000m±

0.000+

4.500m,+

4.500m,±

0.000m,

2.17m3the effectsof cooling,chlorobenzene rectifyingcap cushionbottom elevation of

2.17m,thethicknessof thepile capsis1300mm,cushion thickness100mm;Ground beambeam topelevationof

0.77m,the basebeam tothe excavationof the bottom ofthe beam,the sectionsize ofthecushion thicknessis100mm,with aconstruction areaof for:

2861.71m squaredThisengineering design elevationof

100.000m by

0.000mm tocope withthe absolutelevel ofwusongelevation+

4.500m,field insidethenaturalgroundelevationisabout

4.500m+absolutely,is therelative elevation初+期/雨-0水.0池00m,the excavation depth of

2.17m.

1.

3.2初MD期I雨水池的垫层E底ar标ly高rain po板ol厚为垫层厚建筑面积为本工程设计标高为所应对的绝对标高为吴淞标高场地内部自然地面2绝oMDI-3m,500mm,100mm,

64.89m对标高约为即为相对标高则开挖深度为其积水坑的垫层底标高・

100.000m±

0.000+

4.500m,板厚为垫层厚建筑面积为本工程设计标+

4.500m,±

0.000m,3m

3.45m,⑶500mm,100mm,

6.25nfcrane should be graduallyalong withthe startof vibratoryhammer loading,lifting forceslightlysmaller thanusually shockabsorber springcompression limit.4topullout thesteelsheetpileoflarge resistance,adopt the method ofintermittentvibration,each15min vibration,vibrationhammerfor nomorethan

1.5h.钢板桩土孔处理对拔桩后留下的桩孔，必须及时回填处理回填的方法采用填入法填入法所用材料为中粗

6.

1.

2.8砂或石屑

6.

1.

2.8steelsheetpile soilhole processingToleave behindthepilehole piledrawing,must be timely backfill.Methods thebackfill fillmethod.Fill in质th量e要me求thod in the materialsused for the coarsesand orstone chips.6在.1打.2钢.9板桩的过程中，应随即检查其平面位置是否正确，桩身是否垂直，如发现倾斜不论是前后倾斜或左右倾斜应立即纠正或拔起重打钢板桩采用振动等方法下沉开始沉桩时宜用自重下沉，待桩身有足够稳定后再采用振动下沉钢桩应在场地平整到设计标高后开始施工钢板桩的施工允许偏差桩沉桩的垂直度控制在钢板桩拔除时.，空隙应及H时用中粗砂或石屑充填密1实%焊缝形式围橡与钢板桩之间连接采用焊接焊缝质量等级为三级

6.

1.

2.9Quality requirements

6.

1.

2.

9.1Playing in theprocess ofthesteelsheetpile,should immediatelycheck whethertheplane positioncorrectly,pile bodyis vertical,if discovertilt bothbefore andafter thetilt andtiltshould immediatelycorrect orlifting.Steel sheetpile sinkingby adoptingthemethodofvibration.Start pilingof sinking,weight topilebodyhave enoughstability aftervibration sink.

6.

1.

2.

9.2Steel pileconstruction shallcommence after the gradingtothedesign elevation.

6.

1.

2.

9.3Allowable deviationofsteelsheetpileconstruction:H theverticality controlof pilesinking,at1%.

6.

1.

2.

9.4Steel sheetpile pulling,gap should betimelywith coarsesand orstonechipsfillingcompact.

6.

1.

2.

9.5Weld forms:wai purlinand connectionbetween thesteelsheetpile welding.Weldquality grad轻ef型or井le点ve降l3水.考虑本工程基坑较深，为不影响基坑土方的正常开挖，在挖土前，采用轻型井点降水,开挖

6.

1.3到底时保证降水深度至坑底以下・左右降水施工应于开挖前个月左右进行井点布置及设备选l用.

02.0m1根据现场周边情况，在开挖深度超过米的基础位置设置轻型井点设备，总管直径选用

6.

1.

3.1

①井点管直径选用

①井点管深井点管排列间距视现场开挖的土质情况而定共布置多2套抽水设备125,48,5m,井点管的埋设

6.

1.

3.2埋设川页序先埋设总管，再埋设井点管，用弯管将井点管和总管连通，然后安装抽水设备

6.

1.

3.

2.1埋设方法井点管埋设分振动水冲孔与埋管两个过程冲孔直径为深度应比虑管深左右，

6.

1.

3.

2.2冲孔后立即拔出冲管，居中插入井管，并在井点管与孔壁之间迅速填灌砂滤层砂滤层填灌要保300mm,

1.0m证间距均匀虑砂宜选用干净粗砂，填灌均匀，灌砂高度达以上保证水流畅通井点管填砂后，用粘土封口，以防漏气井点管埋设完毕，应接通总管与抽水设备进行试抽水，检查有无漏2m水、漏气、出水是否正常，有无於塞现象，如有异常情况，应检查修好后方可使用井点管的使用井点使用时，应保证连续不断地抽水，并准备双电源正常出水规律是“先大后小，先浑

6.

1.

3.

2.3后清”井点降水时，应对水位降低区域内的建筑物进行沉陷观测，发现沉陷或水平位移过大时，应及时采取防护技术措施除降水措施外，地面及坑内应设排水措施，及时排除雨水及地表流水坑内排水不得采用在坑边挖沟方式

6.

1.

3.

2.

46.

1.3light well point precipitationConsideringthe engineeringof foundationpit isdeeper,to notaffectthenormal excavationearthwork excavation,before digging,USES thelight well point precipitation,excavation ensurethebelow thepit depth of precipitationisabout

1.

02.0m.Precipitation constructionshould be1months orso before the excavation.

6.

1.

3.1Well pointlayout andequipment selectionAccording tothesituation around,onthe basis ofthe excavationdepth morethan2metersposition setup light well point equipment,choose

①125main pipe diameter,choose

①48wellpoint pipediameter,deep well point pipe5m,wellpoint pipe arrangementspacing depends onthe excavationsite soilconditions.Decorate manysets ofpumping equipment.

6.

1.

3.2Well point pipe buried

6.

1.

3.

2.1Embedded sequencePlant manager first,embedded wellpoint pipeagain,with bentpipe wellpoint pipeandmain pipeconnected,and thenpumping equipmentinstallation.

6.

1.

3.

2.2Embedding methodWell point pipeburied buriedpipes withtwo pointsof vibrationwater punchingprocess.Punching adiameter of300mm,the depthshould bemanaged thanabout

1.0m deep,punchingout immediatelyafter flushing,center insertedwell tube,and betweenthe wellpoint pipeand wallofhole fillingquickly fillingsand filterlayer.Sand filterlayer fillingirrigation to ensure uniformspacing.About sandappropriate choosesclean coarsesand,uniform fillirrigation,make surecurrentis expeditesand fillingheight morethan2m.Sealed wellpoint pipeafter fillingsand,clay,in caseof leakage.After wellpoint pipeburied,through trialpumping manifoldand pumpingequipment,and checkwhether thepresence ofwater,air,water,normal,whether thephenomenon,if thereare anyabnormal situation,should checkfix rearcanuse.The useof

6.

1.

3.

2.3wellpoint pipeWell pointwhen using,should guaranteethe continuouspumping,and prepareto doublepowersupply.After thenormal ruleis firstbig small,muddy beforeqing dynasty.Wellpoint precipitation,dealing withwater levelreduce the buildings in the areaofsubsidence observation,found that the subsidenceand horizontaldisplacement istoo large,measures should be taketimely protectiontechnology.

6.

1.

3.

2.4besides rainfallmeasures,and shallhave thepit drainage measures ontheground,inatimely manner to eliminaterain waterand surfacewater.Pit drainageshall notadopt inpitdigging dit土ch方es开.挖

6.2挖土方E法arthworkexcavation

6.

2.1土方开挖前，降水应至挖土面以下左右

6.

2.

1.1本工程土方开挖遵循分段分层开挖的l.0原m则-

2.，0m先开挖深度小于米的各工号基础底，待各工号基础垫层浇筑完成后，再进行分段开挖

6.

2.

1.

22.5根据标高控制，挖至基坑底面以上余土采用人工清基，并及时抛至挖机工作面以内，以便把余土全部带出，做到挖一块，清一块若在挖土过程中遇到地下暗浜，则在

6.

2.

1.3200mm,暗浜内铺填块石，经监理验收后再铺填碎石，以保持基底稳固平整分段基坑挖好后，应对基底进行抄平，休整，并向监理报验为防止坑底扰动及减少大基坑的空间效应，分段基坑挖好后应及时进行碎垫层浇筑

6.

2.1Digging method

6.

2.

1.1Earthwork excavation,rainfall shouldbe belowdigging facearound

1.0m to

2.0m.

6.

2.

1.2Earthwork excavationproject follow the principleof subsectionstratified excavation,excavationdepth is lessthan

2.5meters ofeach workingfoundation base,for variousworkingstatus after thecompletion ofthe foundation pad,then sectionexcavation.

6.

2.

1.3According toelevation control,dig tofoundationpitbottom morethan200mm,the；soil using artificial base,and inatimely mannertothe driversworking faceof lessthan,in ordertobring the soil inall outdo diga piece,a piece.If encounteredin theprocess ofdiggingunderground hiddencreek,in thedark inthe cityshop filledstone,spread gravelfilling againafterthe supervisionafter theacceptance,to keepthe solidbase isflatandlevel.Section excavationdigging,should baseon sight,break,and tothe supervisioninspection.In orderto preventthedisturbance and reduce the excavation pit is thespace effectof blockfoundationpitdigging wellshouldbeat挖im土el标ym高a控nn制er afterpouring concrete cushion layer.6机.2械.2挖土标高控制在基底以上处，余下土方改用人工挖土至底标高，标高误差及平整度均严格按规范标准执行机械挖土接近坑底约时，由现场专职测量员用水平仪交200mm水准标高引测至坑底，然后随挖机逐步向前推进，将水平仪置于坑底，每隔设置一标高控制500mm点，纵横向组成标高控制网，以准确控制基底标高，严禁超挖2m

6.

2.3Digging elevation controlMechanical diggingelevation controlinthebase of above200mm,the remainingearthworkusing artificialdigging tothebottomelevation and the elevationerror andflatness arespecificationsin strictaccordancewiththe standardsimplementation.Mechanical diggingnear the；bottomof about500mm,full-time bysite surveyorwith levelpay levelelevation measurementtothe bottom,then withthe driversmove forwardstep bystep,put levelinthepit everylevel1mto2m setupthecontrol points,and totheelevationcontrolnetwork,in orderto accuratelycontrolthe basallev边el,坡it稳is定str安ic全tly措pr施ohibited to dig.

6.

2.4做好地面及基坑排水措施，避免场地周围及基坑积水，以防造成边坡塌方

6.

2.

4.1急时对开挖出来的基础进行钢板柱支护，避免造成坡体失稳，而引发塌方

6.

2.

4.2为防止超挖和保持边坡坡度正确，机械开挖至接近坑底标高或边坡边界，应预留厚土层用人工开挖和修坡，保持边坡有足够的坡度，避免随意切割坡体的坡脚每挖

6.

2.

4.3应检查边线和边坡，随时纠正偏差200mm1m为防止边坡滑坡，及时进行钢板柱支护

6.

2.

4.4若发现滑坡裂缝，应及时填平夯实，对可能出现的浅层滑坡，如滑坡土方量不大时，将滑坡体全部挖除对已出现的滑坡可采取卸荷减重，在滑坡体上削去一部分土，坡角堆土以及

623.5局部支挡等措施进行整治若出现边坡塌方事故，应及时组织人力将塌方的泥土清除，用装土草袋堆砌坡脚，并将

①钢管打进土层作临时性钢管支撑，防止土体继续滑动

6.

2.

3.

6486.

2.3The slopestability safetymeasures

6.

2.

3.1Completes theground and foundationpit drainagemeasures,avoid aroundthe site,andfoundationpit water,in casethe slopecollapsed.

6.

2.

3.2Urgent whenout onthebasisofsteelcolumns supportingfor excavation,avoid theslopeinstability,and triggeringlandslides.

6.

2.

3.3To preventsuper digand maintaincorrect slope,mechanical excavationto nearbottomelevation and slope border,200mm thicksoil layershouldbereserved byartificialexcavation andslope,slope tokeep enoughslope,avoid optionalcut slopetoe.1m perdig shouldcheckthe lineandslope,correct thedeviation atany time.

6.

2.

3.4To preventlandslide,inatimely mannerplatecolumnsupport.；

6.

2.

3.5if discoverlandslide cracks,shouldbetimely fillcompaction,the possibleof shallowlandslide,such aslandslide earthvolume isnot bigthe landslideis completelyinvisible.For therehas been alandslide,unloading canbe adoptedtoreduceweight,cut partofthe soil inthelandslide,the slopeAngle ofpile soiland retainingwall localmeasures.

6.

2.

3.6If slopecollapse accident,shouldbetimely organizemanpower toclear thedirt thatlandslides,sack pile withthesoil slopefoot,and willbe temporarysteelpipesupport t48steelpipe inthes基oil坑,p周re边ve荷nt载soil continueto slide.基坑边严禁大量堆载，基坑边超载应控制在以内，并严格控制不均匀堆载机

6.

2.4械进出口通道应铺设路基箱扩散压力，或进行地基加固20kN/m

26.

2.4Around theloadFoundation pitedge ofstack shall be strictlyforbidden,foundationpitedge overloadshouldbe controlledwithin the20kn/m squared,and strictlycontrol theuneven stack.Machinery importandexport channelsshouldbelaying foundationsbox pressurediffusion,or forfoundationreinforceme基nt坑.开挖施工的监测基坑开挖时，由于土体的受力状态发生变化，基坑周围的土体向压力最小方向移动，使周

6.

2.5围的建筑物发生位移，造成不均匀沉降，产生倾斜另外，在开挖时由于坑内水位发生变化，易使土体产生位移，影响建筑物安全为了保证在施工过程中周围建筑物的安全,并对可能出现的危害及时做出预报或采取措施，故要进行地表沉降监测及土体侧向位移监测

6.

2.5Excavation constructionmonitoringFoundation pitexcavation,due tochanges instress stateof soils,soil aroundthe foundationpitofthemove inthe directionof minimumpressure,displacement inthe surrounding buildings,causing unevensettlement,tilt.In addition,because whenexcavation pitwater levelchange,easyto makethesoilproduce displacement,and the safety ofthebuildings.In orderto guaranteethesafety ofsurroundingbuildingsintheprocess ofconstruction,andtheharm ofpossible forecastortake measuresin time,therefore,must carryonthesoil surfacesubsidence monitoringand thelateraldispl基ace坑m排en水t monitoring.基坑挖至基底后，在基坑四周设置排水明沟和集水井，排水明沟应沿四周相互贯通，并沿

6.

2.6边长每隔距离设置一个集水井，井深・用潜水泵排除聚积的雨水渗水,此外，为防止淤泥浆水堵塞水泵，集水井内应采用密网围护的笼子予以保护，派人日夜抽20m500600mm,水，及时做好监控记录基坑上部四周也设置有规则的排水明沟至下水道，采取有组织的排水，避免地表雨水流入基坑

6.

2.6Foundation pitdrainageFoundation pitdigging tothe basement,set aroundthe foundationpitdrainagegutter andcollectingwell,open drainsshouldbealong theconnectivity ofall round,and borderevery20mlong distancesetacollection Wells,the welldepth500-600-mm,with submersiblepump toeliminateaccumulation ofrain waterseepage,moreover,to preventsediment mudblocking waterpump,water pumpwell shouldbe protectedwith densepalisade cage,sent apumping,day andnightmonitoring recordsinatimely manner.Around the foundationpitupper opendrain alsohave setrules todrain,take organizeddrainage,to垫av层oi浇dt捣he surfacerain intothefoundationpit.素碎混凝土垫层应紧跟挖土速度采取随挖、随修整的方法，经设计、勘察、监理等部门验

6.

2.7收合格后立即浇筑碎垫层，以避免地基长时间暴露在外，遭受雨水和施工扰动而降低承载力碎垫层浇筑前，应采用水准仪抄平并用钢筋桩作出标记碎垫层的振捣，采用振动棒振捣，确保其绝对密实、平整、以利准确弹线和支模此外，碎垫层应根据长向的中心线向两边作出的排水坡，以利雨后积水的排除

0.2%

6.

2.7Cast cushion layerPlain concreteconcrete cushion shouldbefollowed bydigging velocityincreases withtheincreasing dig,shaping approach,thedesign,survey,supervision departmentsimmediately aftertheacceptance ofpouring concretecushionlayer,in orderto avoidthefoundationforalong timeexposed,suffered fromthe rainandthe construction disturbanceandreducethe bearingcapacity.Cushion beforepouring concrete,should uselevel sightand reinforcedpiletomark.Vibratingconcrete cushionlayer,usingavibrator vibrating,toensureits absolutedense,smooth,andaccurate lineandthedie.In addition,the concretecushionshouldbe basedonthelong slopetothe

七、质量保证措施centerlineon bothsides tomake

0.2%ofthedrainage,andheruled outaftertherain water.坚持质量第一的方针，严格落实质量责任制，认真执行本施工方案和项目施工组织设计中的有关规定，服从项目部的统一管理，杜绝一切违章行为的出现

7.1严格按给定的标高控制点和工作界限挖土，杜绝超挖和乱挖现象的发生，挖至基坑底板时，必须留厚土，采用人工铲平修整

7.2配备专人，及时测量并控制开挖标高，以防超挖造成对工程质量的影响或因少挖造成200mm人工挖土量的增加，所有测量仪器应配有检定证

7.3在整个土方施工阶段应始终保持低于工作面的排水沟的畅通，做好明沟排水工作

7.4土方开挖工程质量验收标准

7.5Seven,quality assurancemeasures

7.1We muststick tothe policyof qualityfirst,strictly implement the responsibility systemfor quality,conscientiously implement the constructionplan andthe relevantprovisions oftheproject intheconstructionorganization design,obey theunified managementof projectdepartment,put anend toalltheviolations.

7.2work strictlyaccordingtothe givenelevationcontrolpoints andlimits digging,put anendto happenoverbreak anddisorderly digphenomenon,dig tofoundationpitbottom,mustleave a200mm thicksoil,using artificiallevel thedressing.

7.3equipped withspecialist,measure andcontrol the excavation elevationin time,in caseofoverbreak onthe qualityofthe project ordue toless todig theincreased amountof artificialdigging,all measuringinstruments shallbe equipped with verificationcertificate.

7.4intheearthwork constructionstage shouldremain belowwork ofdrainage unblocked,to doagoodjob ofgutter drainage.7土.5方开挖工ea程rth质w量or验ke收xc标av准ation engineering quality acceptance standard.Earthwork excavationengineeringqualityacceptancestandard允许偏差或允许值Allow thedeviation or挖方场地平整value月检验方法地路面基项项Excavation site管沟层Test人N0item iprojectformation机械methodGroundTrenc hRoadTmanMeehansurfaceualics标高水准仪work1Elevation±30±50-50-50Level长度/宽度由设计中心线向两边量经纬仪，用钢尺量主控项Length/目+300+5002+100—width bydesign Theodolite,with a-50-150Maincenter lineto rulercontrolbothsidesproject观察或用坡度尺边坡设计要求检查3Slope Design requirementsObserve orusea slopefoottest用靠尺和塞表面平整度尺检查2m一般项With2m1Surface20502020目on footand feelerroughness观察或土样分析设计要求General基底土性projectSoil Observationor2Designrequirementsanalysis ofsoilsubstrates

八、安全保证措施samples认真学习并切实执行各项安全生产的规章制度，严格落实各级人员的安全生产责任制严格遵守安全操作规程和安全措施等规定，项目部必须严格落实好各项安全交底及三级教

8.1育工作，各班组长在上班前应做好班前交底及教育工作，加强安全教育和安全检查，杜绝一切伤害事故的发生，现场所有的施工人员都要严格遵守安全生产六大纪律，正确使用劳动保护用品，严格遵守工地上的有关规定配备专职安全员，落实安全生产责任制和各项安全措施的实施挖土司机、电工、架子工持相关特种作业有效证件上岗

8.2及时在施工现场内及各出入口配备足够照明，以保证夜间施工的安全

8.3在各出入口安排好值班指挥人员，以防车辆在出入时发生意外事故

8.4在挖机施工时，要配备上、下二级指挥注意观察，确保配合基坑人员的安全任何

8.5人不得在挖斗回转半径内停留和作业

8.6严格控制边坡荷载土方开挖后沿坡顶范围内不准堆放材料等重物，坑边范围内严禁堆土，确保边坡安全

8.75m30m及时做好坑边围护措施，基坑边连续设置临边防护栏杆在基坑入口处设置扣件式钢管斜梯，方便作业人员上下基坑作业

8.8所有的机械设备在作业前，必须按规定做好例保，以保证设备处于良好状况施工

8.9设备必须定机定人，机械操作人员必须严格按操作规程作业，严禁违章作业

8.10现场施工用电设备均应配备专用电箱，实行一机、一闸、一漏、一箱”

8.11施工现场设有专人负责安全管理

8.12所有施工车辆进出装土现场减速严禁鸣号服从指挥人员指挥，所有驾驶员必须遵守交通规则，按指定路线行驶

8.13Eight safetymeasures

8.14To seriouslystudy andimplementtheproduction safety rules andregulations,strictlyimplement theresponsibilitysystemfor productionsafety personnelat alllevels.Strictcompliance withsafetyrules and safetymeasures andother regulations,the projectmust strictlyimplementvarious safetytests,and tertiaryeducation,all groupleaders shouldbe preparedbeforework beforethe classtests,and education,and strengthensafety educationand safetyinspection,preventtheoccurrence ofall injuryaccidents,all on-site constructionpersonnel muststrictlyabide bysafety productionsix discipline,proper useof laborprotection products,strictlyabide bythe relevantregulations onthe site.

8.15with full-time securityofficer,implementthe safety productionresponsibility systemandthesafetymeasures implemented.

8.16Eexcavator drivers,electricians,scaffolders holdvalid documentsrelatedtospecialoperations posts.

8.17Timely intheconstructionsite andall entrancesequipped with adequate lighting,toensure thesafetyoftheconstructionat night.

8.18Arrangements forcommanding officerson dutyatthe entrances to prevent vehicleaccidentsduring access.

8.19When diggingmachine construction,to beequipped withupper andlower secondarycommandto observe,withtheFoundation toensurethesafetyofpersonnel.No personshallremain andwork inthe bucketradius ofgyration.

8.20Strictly controlledslope loads.After earthexcavation alongthetopofthehill arenotallowed topileupmaterial withinthe scope of otherheavy5m,30m strictly prohibited withinthepit bulldozers,ensure slopesafety.

8.21timely mannerpit envelopemeasures providedcontinuously limbpitedgeprotectiverailings.

8.22Setting fasteningsteel inclinedladders attheentrancetothepit tofacilitate workersupand downthepitoperations.

8.23All machinerybeforethejob,you mustdo thecases ofinsurance asrequired toensurethat theequipment isin goodcondition.Construction equipmentmust bepeople givenmachine,machine operatorsmust strictlyfollowtherulesandforbid illegaloperations.

8.24Construction siteelectrical equipmentshallbeequippedwithspecial electricalbox,Hthe implementation ofamachine,a gate,a drain,a box.

8.25Construction sitewith aperson responsible for securitymanagement.

8.26All vehiclesentering andleaving thesoils andsite constructionslowdown.Ming Haoisstrictly prohibited.Obey the command ofthecommandstaff,all driversmust obey the traffic

九、保洁措施rules,withaspecified route.土方开挖前，安排好土方堆放点

9.1确保运土车辆出门不污染附近道路

9.2运土车辆进出大门听从现场指挥，轮胎上沾土必须清洁后方可外运，确保市容整洁

9.3夜间运土车辆保证静音

9.4车辆装土高度应用塑料布罩住，防止渣土在外运过程中掉落

9.5Nine,cleaning measures

9.6Before earthexcavation,earthwork arrangementspiling uppoints.

9.7To ensureno contaminationofearthoutofthe vehiclenear theroad.

9.8Earthmoving vehiclesentering andleaving thedoor toobeythecommand ofthe scenebeforeSinotrans reartires sticksoil mustbe cleantoensureclean city.

9.9Earthmoving vehiclestoensuresilent night.

9.10vehicles fittedwith plasticsheeting coveringthesoilhighly applicationto preventmuckfalling Sinotransprocess.高为所应对的绝对标高为吴淞标高场地内部自然地面绝对标高约为即为相对标高厕开挖深度为

100.000m±

0.000+

4.500m,+

4.500m,±

0.000m

3.45mMDI rainearly cushionpond bottomelevation-3m,a thicknessof500mm,cushion thick100mm,construction areaof

64.89m.The engineeringdesign elevation

100.000m addressedbyan absolute elevation±

0.000Wusong elevation+

4.500m,natural floorspace insidethe absoluteelevationof about+4,500m,is therelative elevation±

0.000m,the excavationdepthof3m.Itswater pitbottom cushionelevation-

3.45m,a thicknessof500mm,cushion thick2100mm,construction areaof

6.25m,The engineeringdesign elevation

100.000m addressedbyan absolute elevation±

0.000Wusong elevation+

4.500m,natural floorspace insidethe absoluteelevationofabou合t+成

4.单50元0m,is therelative elevation±

0.000m,the excavationdepth is

3.45m.

1.

3.3合M成D单A元的承台垫Sy层nt底he标sis高u・nit承台厚度垫层厚度；地梁的梁顶标高根据地梁的断面尺寸对梁底进行开挖，其垫层厚度；排水沟的垫层底标高为

12.10m,1200mm,100mm根据图纸的设计要求，底板厚度建筑面积为本工程设计标高80m,100mm为所应对的绝对标高为吴淞标高场地内部自然地面绝对标高约为-

0.85m,150-450mm,286L71m2即为相对标高则开挖深度为

100.000m±

0.000+

4.500m,+

4.500m,±

0.000m,

2.10m1Synthesis unitselevation-

2.10m,caps thickness1200mm,cushion thickness100mm;top elevationbeam tobeam-

0.80m,cross-sectional dimensionsofthebeam attheendof thebeambase excavation,the matthicknessof100mm;cushionbottomelevation drains-

0.85m,accordingtothedesign requirements ofthe drawings,floor thickness150-450mm,construction2area:

2861.71m,The engineeringdesign elevation

100.000m addressedby an absoluteelevation±

0.000Wusong elevation+

4.500m,natural floorspace insidethe absoluteelevationof about+

4.500m,is二th级er冷ela却ti水ve系el统ev、at蒸io汽n±吸0收.00系0统m,的th承ee台xc垫av层at底ion标d高epthis

2.1承0m台.厚度垫层厚度；地梁的梁顶标高根据地梁的断面尺寸对梁底进行开挖，垫层厚度；排2-

1.81m,1000mm,水沟的垫层底标高为根据图纸的设计要求，底板厚度建筑面积为100mm-

0.71m,100mm本工程设计标高为所应对的绝对标高为吴淞标高场地内-

0.76m,300—500mm,部自然地2面绝对标高约为即为相对标高则开挖深度为

661.20mo

100.000m±

0.000+

4.500m,o+

4.500m,±

0.000m,

1.81m为本工程设计标高为所应对的绝对标高为吴淞标高场地内部自然地面2绝对标高约为即为相对标高则开挖深度为其积水坑的垫o

32.34m

100.000m±

0.000+4,500m,层底标高板厚为垫层厚建筑面积为本工程设计标高+

4.500m,±

0.000m,

2.95m为所应对的绝对标高为吴淞标高场地内部自然地面绝对标高约为即为-

3.45m,500mm,100mm,

6.50nV

100.000m相对标高则开挖深度为±

0.000+

4.500m,+

4.500m,±

0.000m,

3.45mMDA rainearly cushionpond bottomelevation-

2.95m,a thicknessof500mm,cushion thick2100mm,construction areaof

32.34m.The engineeringdesign elevation

100.000m addressedbyan absoluteelevation±

0.000Wusong elevation+

4.500m,natural floorspace insidethe absolute；elevationof about+

4.500m,is therelative elevation±

0.000m,the excavationdepth is

2.95m.Itswater pitbottom cushionelevation-

3.45m,a thicknessof500mm cushionthick100mm,2construction areaof

6.50m.The engineeringdesignelevation

100.000m addressedby anabsoluteelevation±

0.000Wusong elevation+

4.500m,natural floorspace insidethe absoluteelevationofabout+

4.500m,is therelative elevation±

0.000m,the excavationdepth is

3.45m.雨淋阀室1雨.3淋.5阀室的垫层D底el标ug高evalvech板am厚b为er垫层厚建筑面积为本工程设计标高为所应对的绝对标高为吴淞标高场地内部自然地面2绝对标o-

1.30m,400mm,100mm,

29.25m高约为即为相对标高则开挖深度为

100.000m±

0.000+

4.500m,+

4.500m,±

0.000m,

1.30mCushion delugevalve chamberbottomelevation-

1.30m,a thicknessof400mm,cushion2thick100mm,construction areaof

29.25m.The engineeringdesignelevation

100.000maddressed byanabsoluteelevation±

0.000Wusong elevation+

4.500m,natural floorspace insidetheabsoluteelevationofabout+

4.500m,is therelativeelevation±

0.000m,theexcavationdepthis

1.30m.方案选择1本.4基坑工程经分Sch析e具me有S以ele下ct特ion点、基坑平面大体呈长方形，开挖面积较大，开挖影响范围内以粉砂性土为主，渗透性较好，降水工作是基坑开挖成败与否的关键；

1、基坑设计挖深一般，设计开挖深度大部分在以内；

2、场地周围环境条件不容乐观，基坑周围有已经3m建好的重要建筑物、构筑物、地下管线等，不具备一定的放坡开挖条件3根据业主的设计要求，再结合本工程上述特点，因此本工程所有基坑均不采取坡比放坡；只采用钢板桩进行支护和轻型井点降水的围护，达到降水效果，再对本工“SLIC-CMDI2-CP02”程进行土方开挖The excavationwas analyzedwiththefollowing characteristics:1,A generallyflat rectangularpit,excavation largerexcavation withinthe scopeofthesiltof thesoil,good permeabilityprecipitation excavationwork isthe keyto successor failure;；2,deepening pitdesign ingeneral,most oftheexcavationdepth designwithin3m;3,site ambientconditions cannotbeoptimistic foundationhasbeenbuilt aroundimportantbuildings,structures,underground pipelines,which doesnot possessthenecessary gradingor excavation.H HAccording totheowners SLIC-cMDI2-CP02designrequirements,combined withtheabove characteristicsofthe project,so thisproject not take allpit sloperatio gradings;only usesteelsheet pilessupporting theenvelope andlight wellpoint precipitation,achieve precipitation

二、编制依据effects,then thisearthexcavationworks.设计图文件Ba，sis本o场f P地re岩pa土ra工tio程n勘察报告工程编号；

2.1施工图纸；2015-G-

0192.2行业标准《建筑基坑支护技术规程》；

2.3国标《建筑地基基础设计规范》JGJ120-2012；

2.4国标《建筑地基施工质量验收规范GB》50007-2011；

2.5GB50202-2002上海规范《地基基础设计规范》；

2.6国标《建筑结构荷载规范》DGJ08-11-2；

0102.7GB50009-2012土方工程质量验收规范・・；

2.8GEN-0-CIVE SP0014设计要求・・；

2.9SLIC cMDI2CP

022.1design document,this SiteInvestigation Report[project number:2015-G-019];

2.2construction drawings;H

2.3industry standardBuilding FoundationPit TechnicalSpecification JGJ120-2012;

2.4GB BuildingFoundation DesignCode GB50007-2011J;

12.5GB BuildingFoundation ConstructionQuality AcceptanceGB50202-2002];n

2.6Shanghai normsFoundation DesignCode[DGJ08-11-2010J;H

2.7GB buildingstructural loadspecifications[GB50009-2012];

2.8earthworks QualityAcceptance[GEN-0-CIVE-SP-0014J;2三.

9、d工es程ign场r地eq地ui质rem条e件nts SLIC-cMDI2-CP02;

四、根据岩土工程勘察报E告ng，ine本er场in地gg浅eo部lo土gic层al分co布nd如it下ion表s所示Accordingtogeotechnical investigationreport,this fieldshallow soil distribution inthefollow场ing地ta浅bl部e.土层分布一览表层Site shallowsoildistributionlist土层名称重度直剪固块号Straight cutsolid block023LayerSoil layername kN/m CkPaNo.吹填土

①2-

119.

01029.0粘质粉土夹粉质粘土Reclaimed soilclay powdersoil吹填土clip siltyclay淤泥质粉质粘土

①2-

217.

41118.5Reclaimedsoil siltmass siltyclay]砂质粉土

②3-1Sandy silt

18.

9234.0・粘质粉土夹粉质粘土

②32Clayey

18.

91225.5

四、基坑围护结构设计概况silt siltyclay本工程基坑围护不采取放坡，A只pr采o取fou钢n板da桩tio进np行it支re护ta和ini轻ng型st井ru点ctu降re水d的es围ign护方案This engineeringfoundationpitretaining donottakeput slope,only takethesteelsheet土方开挖做法pileinsupporting andlight wellpointprecipitationpalisade scheme.土方开挖应先大面积挖至各工号基础基底标高，，为确保各工号工程桩的稳定性，待各

4.1Earthwork excavationpractice工号的钢板柱支护完成后，再进行二级深度开挖，并及时通知监理、业主、勘察单位进行验收，对基础垫层进行浇注土方开挖的基底标高应结合结施图进行，基坑土方开挖应分层分段进行，每层开挖深度不得超过开挖长度不得大于最后

2.7m,土方及地梁、承台6等0m局部深处宜人工开挖，尽量减少对坑底土的扰动，严禁超挖挖土至坑底标高后应分块施工并在小时内完成素混凝土垫层，并抓紧施工基础底板20cm72Earthwork excavationshouldbelarge digtothe working ofbasal level,and inordertoensurethe stabilityofthe working engineeringpile,stay aftercompletion oftheworknumber platecolumnsupport,thenthesecondary excavationdepth,and timelynotify supervision,owners andacceptanceprospecting units,the castingwascarried out onthefoundationpad.Earth excavationof basementlevel shouldbe combinedwith knotfigure,earth excavationoffoundationpitshouldbelayered segments,shall notbe morethan

2.7m,each layerexcavationdepth excavationlength shallnotbegreater than60m.Last20cm earthworkand groundbeam,caps andother localappropriate artificialexcavationdepth,trytoreducethedisturbance ofbottom soil,itisstrictlyprohibitedtodig.Should beblock constructionafter diggingtothebottomelevationand within72hours tocompletet钢he板pl桩ai施nc工on方cr法etecushion,and graspingtheconstructionfoundation slab.

4.

2、基线确定施工S员te在el基sh坑ee边tp上ile定co出ns轴tr线uc，tio留nm出e以th后od施工需要的工作面，确定钢板桩施工位置参照设计要求

1、定桩位按顺序SL标IC明-C钢MD板I2桩-C的P0具2体桩位，洒灰线标明

2、钢板桩施打第3一根钢板桩插打吊起钢板桩，打开机头夹板夹住桩头，垂直后在设计位置通过打桩机的液压振动锤将钢板桩插入至设计深度后续钢板桩插打第一根桩打插完成以后，后续钢板桩沿前一根桩的扣槽插入至设计深度在钢板桩施工中，打设的允许误差为桩顶标高偏差钢板桩轴线偏差钢板桩垂直度偏差为；在打设过程中，应监测是否在允许误差范围内，超出时及时纠正±100mm,±100mm,1%lBaseline todetermine:the builderset axisontheedgeofthefoundationpit,set asideaftertheconstructionneeds oftheworkingface,determine thepositionofsteelsheetpileconstruction.With referencetothedesignrequirementsSLIC-cMDI2-CP

02.Diction,pile location:the orderclearly indicatetheconcretepile,steelsheetpilewithgreyline marked.

[3]Steel sheetpile type:First rootsteelsheetpileinserted:hoist steelsheetpile,open thenose clipspile headsplints,afterthevertical designposition throughthe hydraulicvibrationhammerpile-driverinsert steelsheetpileto designdepth.Subsequent steelsheetpilein play:afterthecompletionofthe firstroot pileinserted,subsequent steelsheetpilealongtheformer abuckle grooveinsert tothedesigndepthofthepile.Duringtheconstructionofsteelsheetpile,the playof permissible error is:thepiletopelevation deviationplus orminus100mm,thesteelsheetpileaxis deviationplus orminus100mm,steelsheetpile verticalitydeviation is1%;In theprocessofplay set,whether shouldbemonitored轻w型ith井in点th降e水scopeofpermissibleerror,beyond thecorrect intime.4根.3据基础及现场周边Lig情h况tw，el在lp第oin一t层pr基eci础pi开tat挖io深n度内的设置轻型井点设备，总管直径选用

①井点管直径选用

①井点管深井点管排列间距视现场开挖土质情况而定

2.7m先埋12设5总,管，再埋设井点管48，,用弯管将5井m点,管和总管连通，然后安装抽水设备Accordingtothefoundationandthesituation around,inthefirst layerof foundationexcavationdepthof

2.7m inthe Settingsofthelightwellpointequipment,choose

①125mainpipe diameter,choose

①48wellpointpipediameter,deep wellpointpipe5m,wellpointpipearrangement spacingdependsonthesiteexcavation soilconditions.Plantmanagerfirst,embedded wellpointpipeagain,with bentpipe wellpointpipeand

五、施工部署main pipeconnected,and thenpumping equipmentinstallation.项目管理组C织onstructionofthe deployment

5.1组建项目指挥Pro部ject managementorganization5由.1于.1土方量较大，为确保E工st程ab顺lis利hp进ro行je，ct首he先ad组qu建ar一ter个s项目指挥部，总指挥下设技术组主要负责施工方案的编制及施工过程中技术问题的处理土方组主要负责基础土方挖土、运输、弃土场地安保组负责基坑挖土的安全事宜配合组配合前方施工、机械维修及路口指挥等Due tolarge earthworkquantity,inordertoensurethe smoothprogress oftheprojectfirstto forma projectheadquarters,commander inchief sets:Technology group,mainly beresponsible forthe technicalproblems intheprocessofconstruction schemeand constructionprocessing.Earthwork groups:mainly responsible for earthworkdigging,transportation,andsoilsite.Security group:responsibleforthesafetyofthefoundationpitdigging.Cooperate withgroup:cooperate withconstruction,mechanical maintenanceand施工管理网络intersection aheadcommand,etc.Construction managementnetwork project manager xxx其进场施工

③坚持对作业人员的持证上岗制度的检查，特别是电焊工、挖掘机司机等特殊工种持证上岗的检查

④质量技术交底工程开工前，由公司技术负责人对整体工程进行交底，分部工程开工前，由项目技术负责人对子分部进行技术交底严格执行技术交底制度，每项工作开工前，由施工员对班组进行质量技术交底，其内容包括施工工艺、操作规程、质量要求、质量通病防治等对关键部位施工要点和质量要求更要仔细交底

⑤加强对现场管理人员和作业人员的质量意识教育和技术培训工作，做到上岗前管理人员质量检查标准和作业人员施工质量标准人人心中有数，项目部质量员做好质量检查资料收集、申报、整理工作1Establish aprojectmanagerforthecenters quality management systemobjectives andresponsibilities,technical directorof site,construction workers,the conceptofthepuzzle,thequality ofthe specificimplementationofqualitymanagement,quality tests,construction,inspection,supervision,and overallcoordination ofthe professionalconstructionunitjobs.2Scrutiny ofprofessional qualificationssubcontractors,truthfully graspits powerandconstruction experienceconstruction,mainly theprohibited enteringtheconstruction.3Adhere tothe examinationofthesystem ofcertificates ofworkers,particularly welders,excavator drivers,and specialtypes ofcertificates ofinspection.4Quality technical tests:Before theproject started,the companyresponsiblefortheoverall projecttechnicaltests,carriedoutbeforetheproject startsdivision,technical directorofthe projectsub-division technicaldisclosure.Strict implementationofthetechnical disclosuresystem,before eachjob startedbytheconstruction workersquality technicaltests onthe team,which includesconstruction techniques,procedures,quality requirements,quality controlandother commonproblem.Key partsofconstructionelements and quality requirementsmorecarefully disclosure.；5To strengthenon-site managementand operationspersonnel ofthe qualityof educationandtechnical trainingpre-service managerstodo quality checksandqualitystandards forconstructionworkers allaware,theprojectquality staffdoqualityinspection datacollection,reporting,施fin工is策hin戈g［work.

5.2指导思想J为C确on保str在uc基tio坑n挖Pl土an施nin工g时的安全，应遵循两个“万无一失”的原则，即“安全万无一失”，对周围环境“万无一失〃挖土时必须做到“快挖快覆〃由于基坑采用轻型井点降水，为防止土体塌方，基坑开挖必须采用钢板支护，以确保土体稳定本工程挖土量大、施工难度较高充分考虑基坑挖土、堆放、进出道路等各方面的因素，必须采用最佳的施工方法，合理安排确保工程顺利施工至结束在挖土开始前，预先在基坑内土方运输车行驶路线上铺设好道板，以保证土方运输车辆行驶畅通Guiding principle:To ensuresafety duringtheconstructionpitexcavation,we shouldfollow1two foolproof/the principlethat foolproofsecurity,onthesurrounding environment.HFoolproof.When theexcavation mustbe donefast digfast review.Due totheuseof lightwell dewateringFoundation,inordertopreventsoil。