地铁与地上建筑同步施工结构变形分析

Structural Deformation Analysis of Metro Synchronous Construction of Aboveground Buildings

针对坑盖挖逆作地铁深基坑与地上结建建筑同步施工问题,通过有限元数值分析方法,分析施工过程围护结构、建筑主体结构受力变形情况。计算结果可知,基坑地下围护结构与上部建筑地下结构桩基础间差异沉降未超过规范控制值,地下一层顶板结构应力未超过混凝土结构允许应力,结构受力可靠。

In view of the synchronous construction of deep foundation pit cover excavation and overground construction,by the finite element numerical analysis method,the paper analyzes envelope structure during construction and the stress deformation of building main structure.The calculation results show that settlement difference between the foundation pit underground envelope structure and the pile foundation of the underground struc⁃ture of the superstructure does not exceed the code control value,the structural stress of the underground roof does not exceed the allowable stress of the concrete structure,and the structural stress is reliable.