复杂移位工程托换结构施工不利工况内力分析
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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.
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.
引文
[1]李爱群,吴二军,高仁华.建筑物整体迁移技术[M].北京:中国建筑工业出版社,2002.
[2]丁磊,王志骞,俞茂宏.西安鼓楼木结构的动力特性及地震反应分析[J].西安交通大学学报,2003,37(9):986-988.
[3]吴二军,顾文虎,解险峰,等.斜向与旋转复合平移工程中水平托架受力分析[J].建筑结构,2010(6):76-79.
[4]中国建筑科学研究院.GB50010—2002混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.
[2]丁磊,王志骞,俞茂宏.西安鼓楼木结构的动力特性及地震反应分析[J].西安交通大学学报,2003,37(9):986-988.
[3]吴二军,顾文虎,解险峰,等.斜向与旋转复合平移工程中水平托架受力分析[J].建筑结构,2010(6):76-79.
[4]中国建筑科学研究院.GB50010—2002混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.
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