阳逻长江公路大桥南锚碇基础深基坑开挖模拟与实测分析  

Analysis of Excavation Simulation and Field Measurements of South Anchorage Foundation Deep Pit of Yangluo Changjiang River Highway Bridge

作　　者：郭慧光 刘玉涛[2] 徐伟[2] 

机构地区：[1]武汉绕城公路指挥部,湖北武汉430415 [2]同济大学土木工程学院,上海200092

出　　处：《桥梁建设》2004年第3期16-19,共4页Bridge Construction

摘　　要：模拟了阳逻长江公路大桥南锚碇基础深基坑开挖过程,并与实测侧移进行了比较分析。模拟结果表明圆形地下连续墙的拱效应有效地减少了墙体的侧移;施工误差对结构受力和变形有重要影响;实测侧移都在按5%误差所建模型控制之内。所得出的结论为此类基坑支护结构设计和施工提供了理论依据和实践参考。In this paper, the excavation process of the deep pit of south anchorage foundation of Yangluo Changjiang River Highway Bridge is simulated. The simulation is then analyzed and compared with the field measurements of the lateral displacement of the pit wall. The results reveal that the lateral displacement is obviously reduced by the arching effect of the round diaphragm wall; the construction error has significant influences on the structure stress and deformation, and the measurements of the lateral displacement are all within 5% construction error, according to which the model was established. The conclusions generalized herewith provide theoretic basis and practical reference to both the design and construction of the supporting structure of the similar kind of foundation pit.

关 键 词：桥梁基础 地下连续墙 深基坑 开挖 位移 力学分析 

分 类 号：U448.38[建筑科学—桥梁与隧道工程]