复杂移位工程托换结构施工不利工况内力分析  

Internal Force Analysis of Underpinning Structure at Adverse Construction Stage in Complex Moving Engineering

作　　者：吴二军[1] 陈竹[1] 赵琼娟[1] 姜伟[1] 王建永 蓝戊己 

机构地区：[1]河海大学土木与交通学院,江苏南京210098 [2]上海天演建筑物移位工程有限公司,上海200051

出　　处：《施工技术（下半月）》2011年第3期35-38,共4页Construction Technology

基　　金："十一五"国家科技支撑计划重大项目(2006BAJ03A00)

摘　　要：托换结构是移位工程结构安全的关键控制性附加结构,在复杂移位工程中对托换结构在施工不利工况下进行内力分析非常必要。介绍了叶宅复杂移位工程的托换结构形式,分析了托换结构在施工不利工况下的受力特点,采用SAP2000软件建立了叶宅托换结构在竖向顶升、斜向平移、水平旋转、向东平移4个施工阶段的结构分析模型,得到4个施工阶段的移位动力和各构件的内力。分析结果表明,4种工况下内力相差较大;水平内力远小于竖向内力,杆件可以按竖向受弯构件进行设计。Underpinning structure is the controlling additional structure for safety of moving engineering,so it is necessary to analyze the internal force of underpinning structure at adverse construction stage.The composition of underpinning structure in Ye House moving project is introduced,and several characteristics at four adverse construction stages are provided.The four adverse stages include lifting,horizontal diagonal moving,horizontal rotating and moving along the east direction.Analysis modes of four situations are established in SAP2000,and the moving forces and internal forces of members of underpinning structure are calculated.The results show that differences of internal forces in four conditions are obvious,and horizontal internal forces are much smaller than vertical internal forces,so simplifying the members into vertical bend members is reliable in design.

关 键 词：复杂移位工程 托换结构 内力分析 顶升 斜向移位 旋转移位 

分 类 号：TU311.41[建筑科学—结构工程] TU746.4