上海地铁车站基坑工程设计若干问题探讨

Design for Metro Deep Pit in Shanghai Soft Soil Region

软土地区深基坑的变形控制和治理问题已经成了目前岩土工程中的一个热点课题。针对目前地铁基坑设计尤其是基坑变形计算方面存在的欠缺,在全面总结大量上海地铁车站深基坑实测数据及反算分析研究的基础上,提出了被动土压区的水平基床系数Kh的参考取值,以期对基坑工程设计人员提供可借鉴的经验;并在此研究基础上提出对基坑变形警戒值的一些看法。

How to control and deal with the displacement in soft soil region has become a very important problem. It is shown that there are something wrong in the pit design currently. This paper analyzes and calculates the displacement on the basis of measured data about many metro pits in Shanghai and gives some advice of Kh coefficient and pit reinforcement. Finally, some ideas are presented about the alarm limitation of pits in soft soil region.