地下室跨越地铁隧道的承托设计

THE STRUCTURE DESIGN OF A BASEMENT SPANNING OVER SUBWAY TUNNEL

采用厚板方案对跨越地铁隧道的地下室结构进行地下承托转换设计,利用SAP2000有限元软件对转换厚板、地下室外墙以及单桩反力进行模拟分析。通过增加转换桩布置来分担厚板上的转换荷载;通过增加墙外出挑筏形,利用土重抵抗水浮力;利用地下室外墙刚度减小承托厚板的变形和内力。

This paper designs underground transition for basement structure spanning over subway tunnel with thick plate method. The SAP2000 software is used to simulate the transition thick plate, basement exterior wall and counterforce for pile. This method is to share the transition loads by additional transition piles, to resist the flotage with soil load on the cantilever raft foundation and to reduce the deformation and internal force of transition thick plate with rigidity of exterior wall.