浅埋大跨度地铁区间隧道的施工工法

A Study on the Construction Method of Shallow Wide Span Tunnel at Metro Intervals

利用二维有限元法 ,对浅埋大跨度地铁区间隧道可能采用的三种施工工法进行了对比分析。通过比较各工法产生的地面沉降、塑性区及洞周变形后认为 。

By using 2-D finite element method, this paper makes a comparison of three construction methods for shallow wide span tunnel at metro intervals, especially the respective ground deformation, plastic region and the deformation around the tunnel caused by each method, and holds that the 2nd is the best construction method for shallow wide span tunnel.