可拆卸锚杆在基坑工程中应用的安全性分析  

The Safety Analysis of the Deep Excavation Support Using Retrievable Ground Anchors

作　　者：孙军振 张佃仁[2] 雷金山[2] 

机构地区：[1]中铁六局集团桥隧分公司,北京1000361 [2]中南大学土木工程学院,长沙410075

出　　处：《土工基础》2013年第1期56-58,共3页Soil Engineering and Foundation

基　　金：湖南省科技厅工业支撑计划项目(2011GK3127);湖南省发改委批准立项项目(湘发改高技[2012]1493号)

摘　　要：基坑工程中可回收锚杆拆卸时,支护形式的有效转换非常重要。以某基坑工程为背景,采用有限元软件Midas/Gts模拟基坑开挖后拆卸锚杆和地下结构施工过程,考察基坑及支护结构的变形情况,并与现场监测数据进行对比分析,对可回收锚杆支护的设计优化及现场施工具有一定的参考意义。The transition of the supporting system from anchored walls is an very important topic when the retrievable ground anchors are using in the supporting of deep excavations. This paper presents a case history of a deep excavation in sandy gravel soils. The deep excavation construction sequence and the ground anchor retrieval as well as the substructure construction are simulated with Finite Element Software MIDAS--GTS. The deformation of the walls is monitored and the results indicate a good consistent between the simulated and observed data.

关 键 词：基坑 有限元分析 可回收锚杆 稳定 

分 类 号：TU473[建筑科学—结构工程]