斜抛撑基坑开挖变形影响及其控制措施  

Inclined Bracing Deformation and Its Environmental Impact Control Measures

作　　者：杜策 

机构地区：[1]中船勘察设计研究院有限公司,上海200063

出　　处：《岩土工程技术》2016年第3期134-139,共6页Geotechnical Engineering Technique

摘　　要：斜抛撑变形有独特性,以常规的弹性地基梁法计算其变形并借助经验曲线预测坑外地表沉降的方式偏不安全。借助有限元软件PLaxis,通过模拟计算,分析采用斜抛撑围护的基坑的变形特性。同时探讨了控制斜抛撑基坑变形的四种方法及作用。结合大面积地下一层基坑实例,对斜抛撑基坑变形性状及位移控制措施进行了研究。Inclined bracing deformation has uniqueness,Using the model of beam on elastic to calculate deformation of retaining structure and the experience curve to predict the surface settlement is not safe.This paper by using finite element software PLaxis,Analyzing the characteristics of the foundation pit deformation using inclined bracing.Meanwhile,this paper proposes four methods to control the deformation of the pit.Through summarizing the large underground excavation,summed up the inclined bracing pit deformation behavior and deformation control measures.

关 键 词：大面积基坑 有限元分析 HS模型 斜抛撑 

分 类 号：TU942[建筑科学—建筑技术科学] TU441.6