| 考虑渗流-应力耦合基坑开挖降水数值分析 |
| |
| 引用本文： | 杨春山,何娜,张雅宁. 考虑渗流-应力耦合基坑开挖降水数值分析[J]. 广东工业大学学报, 2013, 30(4): 43-48. DOI: 10.3969/j.issn.1007-7162.2013.04.007 |
| |
| 作者姓名： | 杨春山 何娜 张雅宁 |
| |
| 作者单位： | 1.华南理工大学 土木与交通学院，广东 广州 510641；2.广东理工职业技术学校，广东 广州 510500；3.广东工业大学 土木与交通学院，广东 广州 510006 |
| |
| 基金项目： | 国家自然科学基金资助项目(51108190)；华南理工大学亚热带建筑科学国家重点实验室自主研究课题资助项目(2012ZC27) |
| |
| 摘 要： | 运用GTS（Geotechnical and Tunnel analysis System）软件对基坑开挖降水过程进行了详细数值模拟，对比分析了基坑开挖时，考虑降水引起的地下水渗流作用和不考虑渗流作用下的基坑周围土体位移、支护结构位移以及内力，同时分析了止水帷幕、渗透系数及降水深度对基坑力学性能的影响.分析结果表明：渗流对基坑工程影响不容忽视，深基坑稳定性分析应当充分考虑地下水渗流的作用；设置止水帷幕可以有效地减小基坑周围土体的变形，渗透系数与降水深度的加大均会使地表沉降值增大.
|
| 关 键 词： | 深基坑；降水；数值模拟；耦合作用 |
| 收稿时间： | 2012-12-28 |
Numerical Analysis of Seepage stress Coupling of Deep Foundation Pit Excavation |
| |
| YANG Chun-Shan,HE Na,ZHANG Ya-Ning-. Numerical Analysis of Seepage stress Coupling of Deep Foundation Pit Excavation[J]. Journal of Guangdong University of Technology, 2013, 30(4): 43-48. DOI: 10.3969/j.issn.1007-7162.2013.04.007 |
| |
| Authors: | YANG Chun-Shan HE Na ZHANG Ya-Ning- |
| |
| Affiliation: | 1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641， China;2. Guangdong Vocational school of Polytechnic, Guangzhou 510500, China；3. School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China |
| |
| Abstract: | The Geotechnical and Tunnel analysis System was used to simulate the detailed process of foundation pit excavation. The soil displacement, internal force and displacement of supporting structure under the conditions of considering or without considering seepage caused by foundation pit excavation were compared and analyzed. Meanwhile, the effects on the mechanical properties of deep foundation pit caused by waterproof curtain, the permeability coefficient and the depth of precipitation were analyzed. The results show that the impact of seepage on foundation pit should not be ignored, and in the deep foundation pit stability analysis, the role of groundwater seepage should be fully considered. Setting water curtain can effectively reduce the deformation of soil around the foundation pit, and enlarging permeability coefficient and precipitation depth will increase the surface subsidence. |
| |
| Keywords: | deep foundation pits dewatering numerical simulation coupling effect, |
|
| 点击此处可从《广东工业大学学报》浏览原始摘要信息 |
|
点击此处可从《广东工业大学学报》下载全文 |
