西河原水枢纽泵站基坑支护结构及其稳定性分析

Analysis of Supporting Structure and Stability of the Foundation Pit at Xiheyuan Pumping Station

南水北调（中线）天津市内配套工程西河原水枢纽泵站深基坑支护工程，由于其开挖面积大、深度深，土质条件差，受周边环境要求严格等条件制约，通过大型有限元计算软件Plaxis进行模拟计算，分析在支护桩及坑底加固体共同作用的基础上主体结构的受力、位移情况。在确保使用功能及安全性的前提下，达到施工便利、节约主体结构投资的目的。

The retaining structure for deep foundation pit at Xiheyuan pumping station,which is one of the auxiliary projects of the middle route of South-to-North Water Diversion in Tianjin,due to the limitation of large excavation area,deep depth, poor soil conditions and strict surround- ing environment , etc. ,analog computation shall be conducted by large-scale finite element software named Plaxis to analyze the stress and dis- placement of the main structure based on the combined function of support piles and reinforcement body in the bottorn. To achieve the objective of convenient construction and economical investment for main body structure shall be on the premises that ensure using function and safety.