第18卷增刊2地下空间与工程学报Vol.182022年12月ChineseJournalofUndergroundSpaceandEngineeringDec.2022深基坑分层开挖对临近高压铁塔稳定性影响邹刘宗1,张强2,王建望3,胡少斌1,庞烁钢1(1.河海大学土木与交通学院,南京210098;2.中国电建集团华东勘测设计研究院有限公司,杭州311122;3.华南理工大学土木与交通学院,广州510630)摘要:以临安青山湖“桥隧厅”项目的隧道开挖段为实例,该隧道经过一处高压铁塔,距离基坑仅有10m。针对钢梁内支撑式挡土墙围护的深基坑开挖过程中挡土墙的水平位移与地表沉降稳定性问题,利用Comsol数值模拟软件模拟基坑开挖与内支撑支护的过程,分析施工对地表和挡土墙造成的扰动。根据高压铁塔架的稳定性要求,验证开挖过程中高压铁塔的稳定性。保证深基坑边缘高压铁塔的稳定性是本工程施工中的重点难点,利用Comsol数值模拟软件能准确的模拟基坑开挖支护的过程,根据软件模拟结果可以动态采取合适的深基坑防护措施,对整个工程的施工具有重要的指导意义。关键词:深基坑;地表沉降;稳定性;过程模拟中图分类号:TU433文献标识码:A文章编号:1673-0836(2022)增2-0829-06InfluenceofLayeredExcavationofDeepFoundationPitontheStabilityofanAdjacentHighVoltageTowerZouLiuzong1,ZhangQiang2,WangJianwang3,HuShaobin1,PangShuogang1(1.HohaiUniversity,SchoolofCivilEngineeringandTransportation,Nanjing210098,P.R.China;2.PowerChinaHuadongEngineeringCorporation,Hangzhou311122,P.R.China;3.SouthChinaUniversityofTechnology,SchoolofCivilEngineeringandTransportation,Guangzhou510630,P.R.China)Abstract:Thestudyisconductedonthetunnelexcavationproject“Qiaosuiting”ofQingshanLakeinLinan,Zhejiang.Thetunnelpassesthroughahigh-voltagetower,whichisonly10mawayfromthedeepfoundationpit.Thehorizontaldisplacementofsteelbeaminternalsupportingretainingwallandthestabilityofsurfacesettlementduringtheexcavationofdeepfoundationpitareneededtobecontrolled.ComsolMultiphysicsisusedtosimulateexcavationprogressandtheinternalsupport,andthedisturbancecausedbyexcavationtotheretainingwallandsurroundingsurfaceisanalyzed.Accordingtothestabilityrequirementsofhigh-voltagetower,thestabilityofthetowerduringtheexcavationisverified.Ensuringt...