软粘土中土钉支护基坑隆起分析  

Study on Heave of Base of Soil Nailing Protection

作　　者：孙亚琦[1] 杨晓军[1] 余志伟[1] 

机构地区：[1]浙江大学岩土工程研究所,杭州310027

出　　处：《科技通报》2005年第2期176-179,共4页Bulletin of Science and Technology

摘　　要：土钉支护失败,有相当一部分是因为软弱土层基坑底部发生隆起破坏。将圆弧滑动假设运用到土钉支护基坑隆起验算中,利用程序计算研究了基坑隆起的影响因素,认为坡率陡缓和平台宽度大小对基坑抗隆安全系数有重要影响。提出在土钉支护设计计算中应定量考虑基坑隆起稳定性。Many engineering accidents of the Soil Nailing Protection are due to.the heave of base. Under the suppose of slippage of circular arc, infection factors of the heave of base could be analyzed, with Fortran program which is compiled by author himself. Slope rate and width of flat are important factors concerning security coefficient of the opposing knurl of the base. When designing the Soil Nailing Protection, stability of the heave of base should be considered quantifica-tionally.

关 键 词：土钉支护 基坑隆起 圆弧滑动 坡率 平台宽度 

分 类 号：TU470[建筑科学—结构工程]