土工基础

›› 2015, Vol. 29 ›› Issue (3): 156-158.

• 工程实录 • 上一篇    下一篇

基坑降水引起地面沉降的数值分析

方润林   

  1. （深圳市岩土综合勘察设计有限公司,广东深圳 518000）
  • 收稿日期:2015-03-09 出版日期:2015-06-20 发布日期:2015-06-26
  • 作者简介:方润林(1982-)，男，工程师，研究方向为岩土工程勘察、设计，地质灾害评估。

Numerical analysis of Deep Excavation Dewatering Induced Ground Subsidence

FANG Runlin   

  1. (Shenzhen Integrated Geological Exploration & Design Co. Ltd., Shenzhen 518000)
  • Received:2015-03-09 Online:2015-06-20 Published:2015-06-26

摘要： 分析了基坑降水引起地面沉降的机理，讨论了基坑降水过程中有效应力及孔隙水压力变化对土层不均匀沉降的影响机制；运用ABAQUES岩土三维建模分析软件建立了水-土耦合模型，并结合基坑降水工程实测数据分析，模拟结果较好。进一步分析降水深度对地面沉降的影响，结果表明，随着降水深度的增大，基坑降水引发的地面沉降越大。

关键词: 基坑, 降水, 数值建模, 参数讨论, 地面沉降

Abstract: The mechanism of ground settlement due to foundation pit dewatering was analyzed. The mechanism of differential settlement as a result of change in effective stress and pore water pressure was discussed. The water and soil coupled model in ABAQUES was utilized in the simulation. The results of the analysis compared well with field observation. Additional parametric study indicates that ground settlement increases with increasing in foundation pit dewatering depth.  

Key words: Deep Excavation, Dewatering, Numerical Modeling, Parametric Study, Ground Subsidence