土工基础 ›› 2020, Vol. 34 ›› Issue (6): 685-688.

• 专题论述 • 上一篇    下一篇

明挖隧道基坑开挖过程仿真分析

刘 锋,董小卫   

  1. (湖南恒德检测有限公司,湖南衡阳 421000)
  • 收稿日期:2019-12-26 修回日期:2020-01-06 出版日期:2020-12-30 发布日期:2020-12-25
  • 作者简介:刘 锋(1988-),男,工程师,研究方向为岩土工程。

Numerical Simulation of a Cut and Cover Tunnel

LIU Feng, DONG Xiaowei   

  1. (Hunan Hengde Testing Co. Ltd., Hengyang 421000)
  • Received:2019-12-26 Revised:2020-01-06 Online:2020-12-30 Published:2020-12-25

摘要: 采用ANSYS有限元软件,具体结合一工程实例,针对基坑开挖和结构支护进行数值模拟有限元分析,具体分析了基坑施工引起的深层水平位移和基坑周围的地表沉降。研究结果表明:深基坑的开挖与支护过程是一个基坑支护结构和基坑内土体、基坑周边土体共同作用的问题,支护结构和支护方法对基坑周围环境的影响明显,周边土体和基坑内土体对基坑性状的影响显著。

关键词: 地铁隧道, 基坑开挖, 数值模拟

Abstract: The performance of the supporting structure and the excavation process of a cut and cover tunnel were numerically simulated by using ANSYS software. The deep soil deformation and the ground subsidence adjacent to the deep excavation areas are presented. The results indicate that performance excavation and the support structure are the problem of interactions among the supporting structure, soil inside the excavated area and soil behind the supporting structures. The supporting structure selections have a significant influence on the adjacent environments, soil behind the structure and the soil inside the excavated area.

Key words: Subway Tunnel, Deep Excavation, Numerical simulation

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