粤赣高速公路k2边坡监测与稳定性研究  

k2 slope monitoring and stability analysis of Yue-Gan expressway

作　　者：刘汉东[1] 阮飞鹏[1] 李国维[2] 

机构地区：[1]华北水利水电学院岩土工程与水工结构研究所,郑州450011 [2]河海大学岩土工程研究所,南京210098

出　　处：《岩土力学》2008年第12期3365-3369,共5页Rock and Soil Mechanics

基　　金：国家自然科学基金资助项目(No.40602034);河南省创新人才基金资助项目(No.200108);粤赣高速公路重点高边坡工程安全监测科研项目资助

摘　　要：2005年6月下旬广东河源地区遭遇百年一遇的强降雨袭击,累积降雨量超过1000mm。强降雨诱发了边坡的非稳定变形。基于加卸载响应比理论,分析了粤赣高速公路k2路堑高边坡的内、外部变形及加固结构的响应比,讨论了边坡的变形及其稳定性。采用有限元法计算了降雨后支护和不支护两种工况的边坡变形,对k2边坡的加固效果进行了科学评价。研究表明:边坡在强降雨条件下支护后的边坡变形速率趋于稳定,k2边坡加固能够满足稳定性设计要求。A storm attacked the Heyuan area late June, 2005. The rainfall exceeded 1 000 nun. The storm triggered the unstable deformation of the k2 slope. Based on the Load/Unload Response Ratio theory, the deformation and stability of the slope are discussed by analyzing the response ratio of inner deformation, outer deformation and the reinforced structure of k2 high cut slope. The slope deformations on support and without support structure under the storm are analyzed by using finite element method, and the effect of the slope reinforced structure is assessed. The deformation ratio of the slope trends stable under the storm after reinforcement, k2 slope reinforcement can be met the stability of design standards.

关 键 词：边坡 加固 降雨 监测 有限元 

分 类 号：TU441.6[建筑科学—岩土工程]