车站深基坑支护桩嵌固深度优化分析与应用

深基坑支护桩的嵌固深度是基坑设计与施工中的重要参数,也是影响基坑稳定性的重要参数,适当地增加支护桩的嵌固深度,不仅可以提高基坑的整体稳定性,还可以减少支护桩的变位,但过度加深必然造成很不经济。该文结合某车站深基坑支护桩现场实际工况,运用理正软件对支护桩嵌固深度进行了优化调整。实施结果表明基坑安全可靠,为现场施工降低了成本和节约了工期,可供同类工程参考。

Optimization and Application of Embedment Depth of Supporting Piles for Deep Foundation Pit of Subway Station

The embedment depth of the supporting piles for deep foundation pit is an important parameter in the design and construction of the foundation pit,and is also an important parameter to affect the stability of the foundation pit.So properly to increase the embedment depth of the piles can not only improve the overall stability of the pit,but also reduce the displacement of the supporting piles.But excessive depth will be inevitably not economic.According to the practice of a station,the paper adjusts and optimizes the embedment depth of the supporting piles for deep foundation pit by using the software of Lizheng.The results show that the pit is safe and reliable so as to reduce the cost and saves the time,which can be referred for the similar projects.