建筑物平移启动前对托换桁架的影响  

EFFECT ON SUPPORT TRUSS BEFORE BUILDING TRANSLATION START

作　　者：王广义[1] 田忠诚 赵京伟 WANG Guang-yi;TIAN Zhong-cheng;ZHAO Jing-wei(Engineering Research Institute of Appraisal and Strengthening of Shandong Jianzhu University Co.,Ltd.,250013,Ji'nan,China;Jinan Engineering Vocational and Technical College,250200,Ji'nan,China)

机构地区：[1]山东建筑大学工程鉴定加固研究院有限公司,济南250013 [2]济南工程职业技术学院,济南250200

出　　处：《建筑技术》2023年第20期2498-2500,共3页Architecture Technology

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。In order to study the internal force changes of the truss and the basis of the thrust force applied to the translation,a translation model was established by using the finite element analysis software ETABS,taking a translation project as the background.The influence of the top thrust on the final end of the translation direction and the influence of the thrust force on the internal force of the trusses at the middle and back ends of the building were compared and analyzed.The deformation of the underpinning truss caused by different modes of force was studied,and the internal fore changes of the cross inclined braces were discussed.The results show that the maximum deformation of the jacking force applied to the back end and the middle of the building can be reduced by about 50%,and the maximum axial force of the supporting beam can be reduced by more than 50%,and the jacking force has the greatest impact on the cross truss of the trusses at the side span.

关 键 词：建筑物平移 托换桁架 顶推力 

分 类 号：TU746.4[建筑科学—建筑技术科学]