矩形桩支护结构在天津软土基坑工程中的应用实例

Application of retaining structure with rectangular piles to soft soil foundation pit engineering in Tianjin

本文以天津滨海新区某基坑支护工程为例,介绍了矩形桩支护结构在软土地区深基坑支护工程中的应用。在结合矩形桩力学性能的基础上,利用理论计算将其运用于工程实际,通过监测数据与理论计算值的对比,对矩形桩支护结构的变形及受力特征进行了综合分析,结果显示变形及受力特征均与理论计算相吻合,从而证明该基坑支护设计取得了较好的预期效果。同时该支护结构极大地缩短了工期,一定程度上降低了工程造价,带来了良好的社会效益和经济效益,可为其它类似工程提供应用参考。

Taking the foundation pit supporting engineering in Tianjin Binhai New Area as an example,the application of the supporting structure with rectangular piles for deep foundation pit in soft soil area is introduced. On the basis of the mechanical properties of rectangular piles,the author calculated and applied the piles to practical engineering. Through the comparing of the monitoring data and theoretical calculation,the comprehensive analysis of deformation and stress characteristics for the retaining structure with rectangular piles is carried out. The results show that the deformation and stress characteristics agree with the theoretical calculation,so it is proved that the foundation pit support design achieves the expected purpose. At the same time,the rectangular piles shorten the construction time and save the cost for the project,and bring the social and economic benefits, which can provide reference for other similar engineering application.