土工基础

土工基础 ›› 2023, Vol. 37 ›› Issue (4): 608-610.

• 专题论述 • 上一篇    下一篇

基于MIDAS GTS NX模拟基坑变形分析

郭 珅，张 龙   

  1. （中机三勘岩土工程有限公司，武汉 430074）
  • 收稿日期:2022-01-14 修回日期:2022-01-19 出版日期:2023-08-31 发布日期:2023-09-01
  • 通讯作者: 张龙（1987-），男，高级工程师，研究方向为岩土工程。
  • 作者简介:郭珅（1994-），女，工程师，研究方向为岩土工程。

Simulation of a Deep Excavation Deformation by Using MIDAS GTS NX

GUO Shen， ZHANG Long   

  1. (China Machinery TIDI Geotechnical Engineering Co. Ltd., Wuhan 430074)
  • Received:2022-01-14 Revised:2022-01-19 Online:2023-08-31 Published:2023-09-01

摘要： 以某基坑工程为例，利用Midas GTS NX软件进行三维仿真模拟基坑开挖全过程，并通过数值模拟结果分析基坑支护结构水平变形、周边地表竖向沉降随着基坑开挖的变形规律，结果表明，基坑支护结构水平位移随着基坑开挖深度大致分为稳定发展、过渡和迅速发展三个阶段；基坑周边土体竖向沉降随着开挖深度的增加大致呈递增趋势，且周边土体由近及远呈先向上隆起后向下沉降的规律；同一工况下周边土体竖向位移随着与基坑边距离的增大先呈线性变化后沉降量逐渐趋于稳定。

关键词: 基坑支护, 数值模拟, 变形

Abstract: This paper presents a case history of threedimensional finite element analysis simulation of the entire process of a deep excavation support project by using MIDAS GTS NX. The lateral deflection of the supporting structure and the settlement of the adjacent ground with the excavation depth are numerically monitored. The results The results show that the horizontal displacement of the excavation supporting structure is roughly divided into three stages: stable development, transition and rapid development with the excavation depth. The vertical settlement of the adjacent soil around the excavation increases with the excavation depth. It generally shows an increasing trend, and the surrounding soil from near to far shows the pattern of first heave and then downward settlement; under the same working condition, the vertical displacement of the surrounding soil first changes linearly and then settles with the increase of the distance from the edge of the excavation. The volume gradually stabilized.

Key words: Deep Excavation Support, Numerical Simulation, Deformation

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