土工基础

›› 2012, Vol. 26 ›› Issue (2): 61-63.

• 工程实录 • 上一篇    下一篇

基于FLAC3D的加筋水泥土锚桩深基坑围护结构稳定性分析

胡勇   

  1. （湖州职业技术学院，浙江 湖州 313000）
  • 收稿日期:2011-12-02 出版日期:2012-04-20 发布日期:2012-04-27
  • 作者简介:胡勇（1977-），男,国家一级注册结构工程师，湖州职业技术学院讲师，研究方向为地基与基础工程的科研与教学。
  • 基金资助:

    基金项目：湖州市自然科学基金《浙北地区深基坑施工变形对周边安全评价研究》（2011YZ09）

Stability Analysis of Anchored Reinforced Cement Mixing  Columns Supporting Deep Excavation Using FLAC3D

HU Yong   

  1. （Huzhou Vocational Technology College, Huzhou 313000)
  • Received:2011-12-02 Online:2012-04-20 Published:2012-04-27

摘要： 介绍了加筋水泥土锚桩新型深基坑围护结构的形成过程和工作原理，并采用大型有限差分软件FLAC3D对加筋水泥土锚桩深基坑支护全过程进行了动态施工仿真模拟。研究了在基坑分步开挖过程中，围护结构的侧向位移、基坑周围的地表沉降、坑底隆起，并采用有限差分强度折减法计算出经桩锚加固后基坑的安全系数，得到了一些有益于基坑工程设计和施工的结论。

Abstract: The application of anchored cement mixing columns as the supporting structures of the deep excavation is introduced in this paper. The excavation and supporting process of applying the anchored cement mixing columns are simulated by using FLAC3D software. The lateral deflection of the supporting system, vertical settlement of the adjacent grounds, and heave of the excavated area are simulated. The factor of safety after the soil improvement by the anchored columns was able to be obtained by the strength deduction method. The conclusions obtained in this study can be applied to the design and construction of other deep excavation projects.

Key words: Reinforced Cement Mixing Column, Anchored Support, Deep Excavation, Finite Difference, Strength Reduction