| 深基坑在组合支护下的三维模拟及监测分析 |
| |
| 引用本文： | 何志勇,王贤能.深基坑在组合支护下的三维模拟及监测分析[J].路基工程,2014,0(5):149-152. |
| |
| 作者姓名： | 何志勇 王贤能 |
| |
| 作者单位： | 深圳市工勘岩土工程有限公司, 广东深圳 518038 |
| |
| 摘 要： | 深圳汉国深基坑工程,为确保安全,采用了桩撑(包括圆形内支撑)和桩锚的组合支护结构.通过三维数值模拟,同时结合在施工开挖过程中的监测数据,对桩锚撑组合支护结构的内力以及变形规律进行分析和总结.结果表明:灌注桩桩顶位移及内力计算值与模拟值差距较小,其发展趋势基本一致,三维有限元计算结果可信.三维有限元模型可以较好地考虑地下空间效应对支护结构内力及位移的影响.监测结果表明:组合支护结构能够确保深基坑工程的安全.
|
| 关 键 词： | 基坑 组合支护 变形 三维数值计算 空间效应 |
| 收稿时间： | 2019-11-11 |
Analysis on Deep Foundation Pit under Combined Support Structure by 3D Simulation and Monitoring |
| |
| Authors: | HE Zhiyong WANG Xianneng |
| |
| Affiliation: | (Shenzhen Gongkan Geotechnical Group Co. , Ltd. , Shenzhen 518038, Guangdong, China) |
| |
| Abstract: | Taking Hanguo deep foundation pit engineering in Shenzhen as an example,a combined support structure of pile-strut （including circular inner support） and pile-anchor was used for the sake of safety; then the internal force and deformation rules of such pile-anchor-strut combined support were analyzed and generalized with 3D numerical simulation and the monitoring data from the excavation.The result of the analysis shows that,for cast-in-place piles,the calculated and simulated values of the pile top displacement and internal force have little difference and present substantially the same trend of development,thus the results from the 3D FEM calculation are dependable.The 3D FEM model could include the influence of underground spatial effect on the internal force and displacement of the support structure well.The result of the monitoring shows that the combined support structure ensures the safety of the deep foundation pit engineering. |
| |
| Keywords: | foundation pit combined support deformation 3D numerical calculation spatial effect |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《路基工程》浏览原始摘要信息 |
|
点击此处可从《路基工程》下载全文 |
|
