双排钢板桩在河涌改移中的应用

The Usage of Double-row Steel Sheet Piles in River Migration

某跨涌桥施工,需将一段河涌进行临时改移,改移基坑一侧靠近建筑物,宽为35 m,对支护的变形和止水均要求较高,该文对该基坑的支护形式进行了方案比选,分析了双排钢板桩在河涌改移中的适用性,并通过有限元软件Midas GTS NX和理正深基坑的计算,选取了双排钢板桩支护的适宜排距,改善了基坑的安全性和经济性,可为类似工程提供参考。

In order to build a cross-river bridge,a part of the river is about to be migrated. The migrated river is designed to be 35 meters wide and close to a building,which makes its high demands for deformation as well as waterproof capability. This article has conducted a comparison among the support structures to analyze the applicability of double-row steel sheet piles support in this project. Based on the calculation of Lizheng software and Midas GTS NX,the appropriate row distance of the support has been acquired,which have increased the safety and economic efficiency of the migrated foundation and would provide a reference for similar engineering.