长江科学院院报 ›› 2011, Vol. 28 ›› Issue (11): 87-90.

• 岩土工程 • 上一篇    下一篇

基坑开挖对邻近船闸的影响研究

潘宣何1,2,刘晓平2, 林积大2,陈亚娇2   

  1. 1.珠江水利科学研究院, 广州 510635; 2.长沙理工大学, 长沙 410076
  • 收稿日期:2010-11-03 出版日期:2011-11-02 发布日期:2011-11-15
  • 通讯作者: 潘宣何(1985-),男,瑶族,湖南永州人,硕士,主要从事水利工程研究工作,(电话)15920351669(电子信箱)pxhe401@163.com。
  • 作者简介:潘宣何(1985-),男,瑶族,湖南永州人,硕士,主要从事水利工程研究工作,(电话)15920351669(电子信箱)pxhe401@163.com。

The Influence of Foundation Pit Excavation on the Adjacent Ship Lock

PAN Xuan-he 1,2,LIU Xiao-ping 2,LIN Ji-da 2,CHEN Ya-jiao 2   

  1. 1.Pearl River Institute of Hydraulic Research, Guangzhou 510635, China; 2.Changsha University of Science & Technology, Changsha  410076, China
  • Received:2010-11-03 Online:2011-11-02 Published:2011-11-15

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。

关键词: 船闸, 基坑开挖, 土压力, 地基反力

Abstract: 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.

Key words: ship lock, excavation of foundation pit, soil pressure, subgrade reaction

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