土工基础

›› 2014, Vol. 28 ›› Issue (2): 83-86.

• 工程实录 • 上一篇    下一篇

基于FLAC3D的既有建筑物旁深基坑开挖支护分析

蔡 磊,安 康   

  1. （贵州大学 土木工程学院，贵阳 550025 ）
  • 收稿日期:2013-06-05 出版日期:2014-04-21 发布日期:2014-04-25
  • 作者简介:蔡磊（1987-），男，硕士研究生，研究方向为边坡工程。

FLAC3D Analysis of a Deep Excavation Support Near Existing Building

CAI Lei, AN Kang   

  1. (College of Civil Engineering, Guizhou University, Guiyang 550025)
  • Received:2013-06-05 Online:2014-04-21 Published:2014-04-25

摘要： 运用FLAC3D软件对建筑物旁的深基坑开挖支护进行模拟，土体采用MohrCoulomb模型、支护结构采用桩单元和锚索单元。通过计算表明，预应力锚索加超前桩的支护结构减小了基坑周围土体的位移量、减小了邻近建筑物地基两侧的变形差、对基坑开挖后土体的水平应力加固影响较为明显。

关键词: 基坑开挖支护, 数值模拟 FLAC3D

Abstract: This paper presents numerical analysis resutls of deep excavation near existing buildings by using FLAC3D. The soil mass is simulated by MohrCoulomb model and the supporting structures are approximated by pile elements and ground anchor elements. The analysis results indicate that the prestressed ground anchors with soldier piles reduce the deformation of adjacent soil mass as well as the differential deformations at both sides of the nearby buildings. It is also concluded that prestressed ground anchors have significant effect on the horizontal stress in the excavated area.

Key words: Deep Excavation Support, Numerical Simulation, FLAC3D