软土地层中地铁盾构施工引起地表沉降的三维有限元分析

王国才; 马达君; 杨阳; 章洁

软土地层中地铁盾构施工引起地表沉降的三维有限元分析 English Version

1. 浙江工业大学建筑工程学院，浙江杭州 310032 ; 2. 浙江精工轻钢建设工程有限公司，浙江绍兴 312000

基金项目: 浙江省自然科学基金项目(Y1090671,Y1110371)

详细信息

作者简介:
王国才 (1971 – ) ，男，安徽天长人，博士，教授，硕士生导师，主要从事地基与基础相互作用、土动力学方面的教学与科研工作。

中图分类号: TU411.8
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出版历程
- 收稿日期: 2011-04-26
- 发布日期: 2011-11-30

3-D finite element analysis of ground settlement caused by shield construction of metro tunnels in soft soils

1. School of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310032, China; 2. Zhejiang Jinggong Light Steel Construction Co., Ltd., Shaoxing 312000, China

摘要

摘要: 盾构法是软土地区地下隧道施工的一种常用工法，但对于盾构推进过程中引起软土地层移动和地表沉降的原因及机理，人们还缺乏足够的认识和工程实践经验积累，有待进一步深入研究。为此，以杭州地铁 1 号线某区间地铁隧道开挖为例，利用三维非线性有限元软件对地铁盾构隧道施工开挖过程进行数值模拟与分析，得到隧道开挖引起隧道周围土体移动和地表沉降曲线，分析了隧道地表沉降沿横向分布随盾构推进的变化规律、地表沉降沿纵向分布随盾构推进的变化规律和不同深度处地层的沉降变化规律。所得结论对软土地区地铁隧道设计与施工有一定的参考价值。
- 软土 /
- 地铁隧道 /
- 盾构法 /
- 地表沉降 /
- 有限元法
Abstract: The s hield tunneling method is a common construction one for underground tunnel s widely used in soft soils . B ut people still lack adequate knowledge and engineering experience on the reasons and mechanism of soft soil movement and ground settlement caused by the excavation of shield tunneling, which needs further investigation. Hence, take n the excavation of the subway internal tunnel of Hangzhou Metro Line No. 1 for an example, three-dimensional nonlinear finite element simulation and analysis are made on the excavation process of metro tunnel shield by using numerical methods. The curves of ground movement and settlement of soils around the tunnel caused by shield construction are acquired. The variation rules of transverse and longitudinal ground settlements caused by shield construction as well as the trend and distribution of the settlement s at different depths are obtained and analyzed. Some useful conclusions are drawn for the design and construction of metro tunnel s in soft soil area.
- soft soil /
- metro tunnel /
- shield method /
- ground settlement /
- finite element method

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参考文献(8)

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