超高层办公楼地下空间围护结构及降水开挖施工

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1、地标建筑超高层地下空间围护结构及降水开挖施工方案目录一、工程概况1.工程简介2.工程概况及周围环境条件3.场内工程地质及水文条件（1）工程地质条件（2）各土层物理力学指标（3）场内地下水情况（4）不良地质情况二、编制依据三、基坑围护设计概况1.基坑围护设计方案2.基坑降水方案四、本基坑工程重点和难点五、施工部署1.项目组织和管理体系2施工准备工作3.项目管理目标4.施工机械准备及劳动力组织（1）各阶段施工机械准备及进出场计划（2）劳动力组织nthemainterminal,andthetelephoneOfficeisr

2、esponsibleforprovidingtheappropriatesizeadapterpatchpanelsandelectricalprotectionunit.(Shuttlebus)wiring(IDF)setupintheworkshoponthesecondfloorofthebuilding,locatedintheDistrictofweakelectricalcabinets(well).EngineroomplacedinsidetheCabinet,IDFplacedastandard40Uc

3、abinetsforinstallationofnetworkandwiringdevices,managementcomputerandtelephoneinformation.CabinetdistributionframearemadeofSuperfiveRJ45patchpanelhorizontaltwistedpairconnections.Computerinformationmanagement,adminareausingthejumpers,whichusesprivateRJ45-RJ45soft

4、jumpersfornetworkdeviceswithjumpershoppingbetweenallswitches,changes,expansionandmaintenanceweredonequicklyinthewiringcloset.TwistedlengthCentreroomislocatedonthesecondfloor,outwardradiationofeachline(exceptsomepointsmayexceed)doesnotexceed100metresinlength,allin

5、formationforthevariousfloorsallrooms(distributionCabinet)unifiedmanagement.Districtworkshopbuildingdistributionlines(IDF)viafiberopticcablesconnectedtothetotalroomcabinets.Fiberlengthwere:workshopstwoIDF:totalmorethan1200squaremeters,doublethenumberofstrandscanbe

6、calculatedbymultiplyingtheaveragelengthofthenumberofinformationpointsare.Averagelevelofeachlengthofcable:L=[(S1+S2)/2]+L1+L2l:averagelengthofcable;L1:MDFcableallowance;L2:otherallowancesS1:minimumhorizontalcablelength;S2:maximumhorizontallengthofcable;Officebuild

7、ingofinformation:aminimumof26meters,thelongestwas92meters,L=[(28+92)/2]+2.5+1=62.5m;Totallengthof62.5mx792=49500-meterineachbox(KFT)by300meterspercarton;Thetwisted-paircableboxyouwant=49500÷300=165(KFT);lossesnotincluded,eachabout15meters.Metallineslot,andmetalli

8、netubeof3/45、深基坑工程施工顺序6.施工进度计划六、分部工程施工方案及技术措施（一）基坑降水1.概述1.1水文地质概况2.降、排水方案2.1降水方案2.2排水方案2.3备用预案3.降水施工3.1深井施工3.2轻型井点施工3.3排水施工3.4降水运行3.5降水阶段应注意事项4．深井封堵措施（二）土钉墙施工1