涌水深基坑稳定性分析及止水措施  

Stability analysis and sealing measures for deep foundation pit

作　　者：牛文宣[1] 

机构地区：[1]中交四航工程研究院有限公司,广东广州510230

出　　处：《水运工程》2015年第3期71-77,共7页Port & Waterway Engineering

摘　　要：针对涌水深基坑的稳定性和安全性问题,采用有限元软件ANSYS对基坑的开挖过程进行计算,得到不同开挖工况下基坑的状态和位移变形,并与基坑实际监测数据进行对比,分析涌水对基坑的影响程度,评估基坑的安全性能。同时,针对本工程基坑涌水的问题,提出相应的解决方案和处理措施。通过分析可知,基坑涌水对灌注桩的影响较小,但对坑外土体和立柱等影响较大,基坑整体的稳定性受涌水影响有限。虽发生了涌水现象,但采取必要措施以后,未对基坑的安全运行和后期开挖造成影响。Aiming at the problem of stability and safety of deep foundation pit after water and soil bursting, we adopt the finite element software ANSYS to analyze the excavation of foundation pit, and calculate the stress and deformation under different working conditions. Based on the comparison of calculation and monitoring data, we evaluate the safety of foundation pit, and put forward solutions. The results indicate that water bursting has little influence on the compresol pile of the foundation pit. However, the deformation of soil and girder change greatly. By the solution measures, the safety performance of foundation pit still is guaranteed.

关 键 词：基坑 涌水 有限元 监测数据 稳定性分析 

分 类 号：TU463[建筑科学—结构工程]