2022·12·BuildingConstruction2866狭小空间条件下深基坑拆换撑工程施工部署刘福焰1,21.上海建工五建集团有限公司上海200063；2.广东上建建筑工程有限公司广东广州510000摘要：一般情况下，深基坑混凝土内支撑拆除前需要等支撑下部的换撑结构完全形成整体后再进行拆除。但这种常规的施工方法在场地空间狭小、基坑各分区不均衡施工且工期紧张的环境下并不适用。以深圳市龙岗区健康管理服务中心大楼工程深基坑内支撑拆换撑施工为典型案例，对拆换撑重难点进行分析，确定狭小空间条件下深基坑分区拆换撑工程的施工整体部署。综合考虑基坑支护结构拆除与后续的清理运输工作，以切割＋吊装＋叉车转运为应对方式，保证绿色施工，并解决场地狭小的问题，为类似工程的施工提供了参考。关键词：深基坑；钢筋混凝土内支撑；拆换撑；狭小空间；施工部署中图分类号：TU753文献标志码：A文章编号：1004-1001(2022)12-2866-03DOI：10.14144/j.cnki.jzsg.2022.12.016ConstructionDeploymentofDeepFoundationPitSupportRemovalandReplacementProjectUnderNarrowSpaceConditionLIUFuyan1,21.ShanghaiConstructionNo.5(Group)Co.,Ltd.,Shanghai200063,China;2.GuangdongShangjianConstructionEngineeringCo.,Ltd.,Guangzhou,Guangdong510000,ChinaAbstract:Ingeneral,beforetheremovaloftheconcreteinternalsupportofdeepfoundationpit,itisnecessarytowaituntilthesupportreplacementstructureunderthesupportiscompletelyformed.However,thisconventionalconstructionmethodisnotapplicableintheenvironmentofnarrowsitespace,unevenconstructionoffoundationpitpartitionsandtightconstructionperiod.TakingthesupportremovalandreplacementindeepfoundationpitofShenzhenLonggangDistrictHealthManagementServiceCenterBuildingProjectasatypicalcase,thekeyanddifficultpointsofthesupportremovalandreplacementisanalyzed,andtheoverallconstructiondeploymentofthesupportremovalandreplacementindeepfoundationpitzonesundertheconditionofnarrowspaceisdetermined.Consideringthedemolitionoffoundationpitsupportstructureandsubsequentcleaningandtransportationwork,cutting+hoisting+forklifttransferisadoptedtoensuregreenconstructionandsolvetheproblemofnarrowsite.Itcanprovideareferencefortheconstructionofsimilarprojects.Keywords:deepfound...
