土钉抗弯抗剪性能的数值分析  

An Analysis of Soil Nailings' Intension Against Shear and Moment

作　　者：何建勇[1] 张钦喜[1] 朱绪平[1] 潘旭亮[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100022

出　　处：《北京工业大学学报》2004年第4期446-449,共4页Journal of Beijing University of Technology

基　　金：北京市科委基金资助项目(KP0401200361).

摘　　要：为探讨土钉横向刚度对土钉内力的影响,利用国际通用分析软件FLAC,以工程实例为背景,用数值模拟的方法对土钉横向抗弯、抗剪刚度影响土钉内力进行了分析.分析结果表明,土钉和面层的连接对土钉横向作用的发挥有很大的影响,在土钉与面层铰接的情况下,考虑横向刚度可使轴力增加2.4％,在土钉与面层断开时,可使轴力降低4.5％.下部土钉较上部土钉能发挥更大的横向作用.A real project has been simulated and analyzed with the FLAC-2D program. The analysis results show that the key factor of influencing on the transversal effect of soil nailing is the joint between face shield and soil nailing, and at the same time the changing rule of maximal shear and moment in the soil nailing with the destroy of the joint is also found out The good agreement between analytical results and in-situ experimental results show that numerical simulation is a feasible approach of qualitative analysis. On the basis of these analysises, the authors suggest that the strength against shear and moment the soil-nailings at the bottom of slope should be strengthen in design.

关 键 词：土钉墙 土钉剪力 土钉弯矩 数值模拟 

分 类 号：TU432[建筑科学—岩土工程]