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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。
The underpinning structure is the key control additional structure of the displacement engineering structure safety. It is very necessary to analyze the internal force of the underpinning structure under the adverse construction conditions in the complex displacement engineering. This paper introduces the underpinning structure of Ye Zhai complex displacement project, analyzes the force characteristics of underpinning structure under unfavorable construction conditions, and uses SAP2000 software to set up the vertical movement of uplift, Horizontal rotation, translation of the four east-phase structural analysis of the construction stage model, the displacement of four construction stages of the force and the internal forces of each component. The analysis results show that the internal forces differ greatly under the four conditions; the horizontal internal forces are far less than the vertical internal forces, and the rods can be designed according to the vertical bending members.