建筑技术ArchitectureTechnology第54卷第20期2023年10月Vol.54No.20Oct.2023·2498·建筑物平移启动前对托换桁架的影响王广义1，田忠诚1，赵京伟2（1.山东建筑大学工程鉴定加固研究院有限公司，250013，济南；2.济南工程职业技术学院，250200，济南）摘要：为研究托换桁架的内力变化及平移时施加顶推力的依据，以某平移工程为背景，应用有限元分析软件ETABS建立了平移时的托换模型。对比分析了在平移方向的后端施加顶推力和在建筑物中间及后端同时施加顶推力对托换桁架内力的影响，研究了不同施力方式引起的托换桁架的变形，探讨了交叉斜撑的内力变化情况。研究结果表明：相比仅在建筑物后端施加顶推力，在建筑物中间及后端同时施加顶推力托换梁的最大变形可降低50%左右；托换梁最大轴力可降低50%以上；顶推力对边跨处托换桁架交叉斜撑影响最大。关键词：建筑物平移；托换桁架；顶推力中图分类号：TU746.4文献标志码：A文章编号：1000-4726(2023)20-2498-03EFFECTONSUPPORTTRUSSBEFOREBUILDINGTRANSLATIONSTARTWANGGuang-yi1,TIANZhong-cheng1,ZHAOJing-wei2(1.EngineeringResearchInstituteofAppraisalandStrengtheningofShandongJianzhuUniversityCo.,Ltd.,250013,Ji'nan,China;2.JinanEngineeringVocationalandTechnicalCollege,250200,Ji'nan,China)Abstract:Inordertostudytheinternalforcechangesofthetrussandthebasisofthethrustforceappliedtothetranslation,atranslationmodelwasestablishedbyusingthefiniteelementanalysissoftwareETABS,takingatranslationprojectasthebackground.Theinfluenceofthetopthrustonthefinalendofthetranslationdirectionandtheinfluenceofthethrustforceontheinternalforceofthetrussesatthemiddleandbackendsofthebuildingwerecomparedandanalyzed.Thedeformationoftheunderpinningtrusscausedbydifferentmodesofforcewasstudied,andtheinternalforechangesofthecrossinclinedbraceswerediscussed.Theresultsshowthatthemaximumdeformationofthejackingforceappliedtothebackendandthemiddleofthebuildingcanbereducedbyabout50%,andthemaximumaxialforceofthesupportingbeamcanbereducedbymorethan50%,andthejackingforcehasthegreatestimpactonthecrosstrussofthetrussesatthesidespan.Keywords:buildingmoving;underpinningtress;jackingforce建筑物平移时，施加顶推力之后、启动之前托换桁架的内力变...
