基坑开挖对邻近船闸的影响研究  

The Influence of Foundation Pit Excavation on the Adjacent Ship Lock

作　　者：潘宣何[1,2] 刘晓平[2] 林积大[2] 陈亚娇[2] 

机构地区：[1]珠江水利科学研究院,广州510635 [2]长沙理工大学,长沙410076

出　　处：《长江科学院院报》2011年第11期87-90,共4页Journal of Changjiang River Scientific Research Institute

摘　　要：采用有限单元法对排桩支护结构下邻近船闸的基坑开挖过程进行模拟,分析了已建船闸闸室墙及支护桩的位移、闸室墙后土压力及地基反力随开挖深度变化规律以及它们之间的相互关系。结果表明:邻近船闸基坑开挖时,维持墙后的土压力,可以避免闸室墙前、后趾处的地基反力相差过大,有效地减少其横向位移,以确保闸室墙的稳定。此结论可为工程的设计及施工提供参考。The process of excavating the foundation pit of adjacent ship lock supported with row-piles was simulated with finite element method.The authors investigated the displacement of the lock chamber wall and retaining piles,the regularity in the changes of soil pressure behind the chamber wall and subgrade reaction against the excavation depth,as well as the relation between them.The study reveals that the lateral displacement can be reduced to ensure the stability of lock chamber wall by maintaining the soil pressure behind the wall when excavating the foundation pit and meanwhile avoiding an excessive difference of subgrade reactions of the chamber wall between front-toe and back-toe.The study will be helpful for engineering design and construction.

关 键 词：船闸 基坑开挖 土压力 地基反力 

分 类 号：U641[交通运输工程—船舶及航道工程]