钱江隧道江南工作井基坑开挖有限元模拟研究

A CASE STUDY ON DEEP EXCAVATION OF QIANJIANG RIVER TUNNEL WITH FEM ANALYSIS METHOD

主要介绍了钱江隧道江南工作井试验段基坑地下连续墙工程。由于钱江隧道江南工作井范围大,开挖深,如何有效控制基坑施工过程中对周围环境的影响成为一个重要的问题。基坑在开挖过程中对周围环境造成的最主要的影响是导致土体变形形成不可逆的侧向位移及沉降。有限元法作为一种有效的模拟及预测基坑开挖过程中周围土体变形的手段,已被广泛应用于实际工程中。针对钱江隧道江南工作井试验段基坑工程模拟的结果可以作为国内同类基坑地下连续墙设计及施工的参考。

This paper presents a case study on a deep excavation in Qianjiang River Tunnel, Hangzhou.Due to the deep and large excavation range,controlling the environment impact,which surrounds foundation,becomes an important problem.In all of these impacts,differential settlement is the most importantone.FEM analysis as an effective way has been widely used in practical projects.In this study,FEM analysis has been introduced in this project.