邻近船闸基坑开挖安全影响因素  

Influential factors on safe excavation of foundation pit near lock

作　　者：罗鹏飞[1] 刘晓平[1] 曹周红[1] 苏天宇[1] 张宇[1] 

机构地区：[1]长沙理工大学,湖南长沙410076

出　　处：《水运工程》2016年第4期113-117,共5页Port & Waterway Engineering

基　　金：国家自然科学基金资助项目(51309037)

摘　　要：邻近船闸基坑开挖工程会对已建船闸的安全运行带来一定影响,为了解该影响,保证邻近已建船闸的安全和正常运营,结合非线性有限元仿真分析方法,采用理想弹塑性本构模型和D-P屈服准则建立邻近船闸基坑放坡开挖平面二维有限元模型,分析基坑距船闸的距离、基坑的坡度等因素对邻近已建船闸的影响,提出了邻近船闸基坑开挖安全间距及基坑坡度的建议值。The excavation engineering in the vicinity of the existing braiding lock has a certain enect on ute safe operation of it. In order to understand the influence of slope excavation in the foundation pit near the lock and ensure the safety and normal operation of it, we establish a 2D finite element model of the slope excavation in the foundation pit near the lock combining with nonlinear finite element simulation analysis method, ideal elastic-plastic constitutive model and D-P yield criterion. Base on the analysis of the influential factors including the distance between foundation pit and the lock, and slope of the pit, we present the proposed value of the safe distance and excavation slope of the foundation pit near the lock.

关 键 词：邻近船闸 放坡开挖 非线性有限元 安全间距 

分 类 号：U641.5[交通运输工程—船舶及航道工程] TU471.3[交通运输工程—船舶与海洋工程]