某地铁车站带垂直电梯出入口整体有限元分析

Integral Finite Element Analysis of a Subway Station with Vertical Elevator

通常地铁站出入口为长条形结构,以横断面上的平面变形为主,因此通常采用二维平面模型进行分析。但对于含垂直电梯的出入口,其敞口段受力具有典型的空间特性,若采用传统的平面简化模型计算,则可能导致部分区域构件内力计算偏大,配筋较大而不经济,同时也可能部分板、墙纵向的弯矩考虑不足,可靠性难以保证,因此本文对出入口整体建模计算并与平面框架计算结果进行了比较分析,提出结论与建议,对类似工程有一定的参考意义。

Usually the entrance to the subway station is a long strip structure,which is mainly based on the plane deformation of the cross section,therefore,the two-dimensional model is usually used to analyze. But for the entrance and exit of the vertical elevator,the open section has the typical characteristics of space,if using the traditional plane simplified model,it may lead to the calculation of the internal forces in some regions is too large,the reinforcement is larger,not the economy. At the same time,it may not be enough to consider the bending moment of the plate and the wall,and the reliability is difficult to guarantee. Therefore,this paper makes a comparative analysis of the overall modeling of the entrance and the results of the calculation of the plane frame,and puts forward the conclusion and suggestions. It is hoped that the conclusions have some reference value for similar projects.