预留物业开发条件下地铁车站的结构设计

研究目的：通过对上海轨道交通9号线松江新城站结构设计和计算，总结出城市轨道交通预留物业开发条件地下车站结构设计的几条经验，为今后类似工程的设计提高参考。 研究方法：车站基坑围护桩根据各开挖工况按竖向弹性地基梁计算，并计入围护结构的先期位移值以及支撑的变形，上部结构由车站地下一层结构和结构底板下桩基联合组成复合深基础，车站结构分别按横向、纵向弹性地基上的框架进行计算。 研究结果：松江新城站基坑开挖过程中围护桩变形较小，各项监测数值均在允许范围内，车站整体刚度较好，结构整体沉降量较小，没有出现不均匀沉降。 研究结论：地铁车站作为上部物业结构基础的一部分与桩基础共同承担上部荷载的设计方法是可行的，对于地铁车站与桩基组成的复合基础，设计中还有许多问题值得探讨，这是今后工作的研究方向。

Structure Design of Subway Station in the Case of Reserve Service Development

Research purposes: This paper gives some experience about city orbit reserve service development by the structure design and calculation of 9 line of orbit transportation in Shanghai.Research methods:The calculation of the stakes is based on the vertical elasticity groundsill beams and adding to the displacement and deformation in advance.The calculation of the station is based on the frames on the landscape(orientation) and portrait elasticity foundation.Research results:The deformation of the enclosed stakes during the process of digging is small and the value is under permission.The integer stiffness gets well and the settlement of the whole construction is small.There is no asymmetry sedimentation.Research conclusions:The design method of the station which is the foundation of the structure above and the stake foundation bearing the total loading is feasible.There are many problems to research during the design of complex(foundation) of the station and stake foundations,which is the research direction for the future.