异型深基坑施工对基坑内外土体及支护结构的影响.pdf
姚恐龙,等:异型深基坑施工对基坑内外土体及支护结构的影响
DOI:10.13379/j.issn.1003-8825.202311071
开放科学(资源服务)标识码(OSID)
异型深基坑施工对基坑内外土体及支护结构的影响
姚恐龙,任方毅”,易领兵,张明旭,王孜璨
(1.中车城市交通规划设计研究院有限公司,南京210000;
2.中国交建轨道交通事业部(轨道分公司铁道总院),北京100088;3.西南交通大学茅以升学院,成都611756)
摘要:以某异型深基坑工程为背景,采用有限元软件建模分析,研究基坑施工全过程对坑内外土体及支护
结构的影响,总结施工过程中坑外土体沉降、坑内土体隆起、支护结构X、Y向位移变化规律,并进行施工监测
数据与模拟计算结果的对比分析,实际监测值与数值计算结果曲线变化趋势一致,最大值发生位置一致。
关键词:轨道交通;异型深基坑;监控量测;有限元;隆起;位移控制;稳定性
中图分类号:TU753文献标志码:A
ImpactoftheConstructionofIrregularDeepFoundationPits
ontheSoilandSupportStructuresinsideandoutsidethePit
3
YAOKonglong,RENFangyi,YILingbing,ZHANGMingxu²,WANGZican
(1.CRRCUrbanTransportationPlanningandDesignInstituteCo.,Ltd.,Nanjing210000,China;
2.ChinaCommunicationsConstructionCorporation(RailwayBranch|RailwayInstitute),Beijing100088,China;
3.CollegeofMaoYisheng,SouthwestJiaotongUniversity,Chengdu611756,China)
Abstract:Takinganirregulardeepfoundationpitprojectasthebackground,theinfluenceofthewholeprocessof
foundationpitconstructiononthesoilandsupportstructuresinsideandoutsidethepitisstudiedbyusingthefinite
elementsoftwaremodelinganalysis.Thechangerulesofsoilsettlementoutsidethepit,soilupliftinthepit,X,Y-direction
displacementofsupportingstructureintheconstructionprocessaresummarized.Inaddition,theconstructionmonitoring
dataandsimulationcalculationresultsarecomparedandanalyzed.Thecurvevariationtrendoftheactualmonitoring
valueisconsistentwiththatofthenumericalcalculationresultandthemaximumvalueoccursatthesamepos