挖孔墙结构在长洲水利枢纽三线四线船闸工程中的应用

当在原有船闸基础上新建二线甚至多线船闸时,受到场地条件制约,许多基坑已无法采用传统放坡开挖的形式,需采取基坑支护。文章以长洲三线四线船闸上游导航墙结构为例,介绍了一种新型的导航墙结构——挖孔墙结构的设计思路和计算方法,并提出了该结构应用于船闸工程的挡土防漏措施。该结构成功将基坑支护与导航墙结构结合,可为今后类似工程提供参考。

Application of Hole Wall Structure in Three-line and Four-line Shiplock Project of Changzhou Hydraulic Complex

When newly building the dual-line or multi-line shiplock in the original shiplock basis,subject to the constraints of site conditions,many foundation pits have been unable to adopt the traditional slope excavation method,which requires the foundation pit protection.Taking the upstream navigation wall structure of Changzhou three-line and four-line shiplock as the example,this article introduced the de-sign ideas and computation method of a new navigation wall structure-hole wall structure,and proposed the retaining anti-leaking measures of this structure when used in shiplock projects.This structure suc-cessfully combined the foundation pit protection and navigate wall structure,thereby providing the refer-ence for future similar projects.