摘要
轨道交通地下换乘站大多属于交叉异形深基坑,具有明显的三维空间效应,应力应变状态非常复杂。结合成都某轨道交通换乘站分期实施工程,采用三维有限元软件对交叉异形深基坑施工过程进行动态模拟,分析先期施工的结构在后期基坑施工过程中的位移、变形和结构主应力的变化规律,评估后期基坑开挖对既有结构的影响,可为类似工程提供参考和建议。
Most of the underground transfer stations of rail transit are deep excavated and intersected,with obvious three-dimensional spatial effect and complicated stress-strain state.Based on the staged construction of a rail transit transfer station in Chengdu,the intersected deep excavation process is dynamically simulated by a three-dimensional finite element software to analyze the change of displacement,deformation and major stress of structure constructed in advance during the later excavation construction,and evaluate the impact of later excavation on the existing structure,which provides reference and suggestions for similar projects.
作者
徐子林
孟磊
曾杨
Xu Zilin;Meng Lei;Zeng Yang
出处
《隧道与轨道交通》
2019年第4期18-20,57,共4页
Tunnel and Rail Transit
