第32卷第2期2023年6月计算机辅助工程ComputerAidedEngineeringVol.32No.2Jun.2023文章编号:1006-0871(2023)02-0044-05D0I:10.13340/j.cae.2023.02.009沉井式地下车库承载特性数值分析与结构优化贾强“b,左常璐.h(山东建筑大学a.土木工程学院;b.建筑结构加固改造与地下空间工程教育部重点实验室,济南250100)摘要:为研究连续拱形组合截面沉井式地下车库的受力特性,采用Ansys软件分别建立拱脚固接和拱脚铰接2种连接方式的不同跨数标准节间的连续拱形组合截面沉井的数值模型,分析构件的弯矩变化规律。结果表明:当标准节间外拱墙圆弧的迹线位于同一圆弧时,相应矢跨比为外拱墙弯矩接近为0的最优值。当标准节间跨数、拱脚连接方式、标准节间长宽比发生改变时,这一结论仍然适用。关键词:连续拱形组合截面沉井;预制装配;迹线;整体浇筑;矢跨比;优化中图分类号:TP391.99;TU926Numericalanalysisofload-bearingcharacteristicsandstructuraloptimizationofcaissonundergroundgarage(a.SchoolofCivilEngineering;b.KeyLaboratoryofBuildingStructuralRetrofittingandUndergroundSpaceEngineering(MinistryofEducation),ShandongJianzhuUniversity,Jinan250100,China)Abstract:Tostudythemechanicalcharacteristicsofthecaissonundergroundgaragewithcontinuousarchcompositesection,thenumericalmodelsofcontinuousarchcompositesectioncaissonwithdifferentnumberofstandardspansusingthearchfootfixedconnectionandthearchfoothingedconnectionarebuiltinAnsyssoftware.Thebendingmomentchangelawofthemembersisanalyzed.Theresultsshowthatwhenthetraceofthearcoftheouterarchwallofthestandardsectionislocatedinthesamearc,thecorrespondingrise-spanratioistheoptimalvaluewhiletheouterarchwallbendingmomentclosetoO.Thisconclusionisstillapplicablewhilethenumberofstandardinternodespans,theconnectionmodeofarchfootandtheratiooflengthtowidthofstandardinternodechange.Keywords:continuousarchcompositesectioncaisson;prefabricatedassembly;trace;integralcasting;rise-spanratio;optimization0引言大量既有建筑建造时未设置地下车库,然而随着社会经济的发展、汽车保有量的增加,停车难现象收稿日期:2022-12-05修回日期:2023-01-11基金项目:国家自然科学基金(51278286)作者简介:贾强(1970一),男,山东济南人,教...