基于Excel数据表和极限分析法的滑坡抗剪强度参数反演分析  

Back analysis of shear strength parameters based on Excel spreadsheet and upper bound limit analysis method

作　　者：陈静瑜[1,2] 赵炼恒[1] 李亮[1] 谭捍华[3] 

机构地区：[1]中南大学土木工程学院,湖南长沙410075 [2]华东交通大学轨道交通学院,江西南昌330000 [3]贵州省交通规划勘察设计研究院股份有限公司,贵州贵阳550001

出　　处：《岩土力学》2016年第3期827-834,共8页Rock and Soil Mechanics

基　　金：国家自然科学基金项目(No.51208522);中国博士后科学基金资助项目(No.2012T50708);贵州省交通运输厅科技项目(No.2012122033);湖南省科学技术厅科技计划项目(No.2012SK3231)~~

摘　　要：针对采用传统的确定性边坡稳定性分析方法进行滑裂面抗剪强度参数反演分析所需滑坡断面不少于两个的不足,基于概率可靠度理论,提出了一种结合Excel数据表和极限分析上限法的滑坡强度参数反演新方法。依托湘西朱雀洞特大滑坡进行算例分析,研究结果表明:结合Excel数据表法和极限分析上限法反演得到的滑裂面抗剪强度参数与工程现场实测数据吻合良好,验证了新分析方法的正确性和有效性;运用该法反演分析只需一个滑坡断面,可有效解决单一滑裂面抗剪强度参数反演问题,减少了计算工作量,具有广泛的适用性和良好的工程应用前景。To overcome the inefficiency that not less than two landslide sections are required in the back analysis of shear strength parameters based on the traditional slope stability analysis method, a new method is developed for back analyzing soil strength parameters based on the probability reliability theory, by combining the Excel spreadsheet method and the upper bound limit analysis method. The proposed method is applied to back analyze Zhuequedong landslide in Hunan province. The results indicate that the shear strength parameters of slip surface obtained by the proposed method are in good agreement with the measured data of the engineering site. The applicability of the new analytical method is verified. Based on this method, the inverse problem of shear strength parameters of a single slip surface can be resolved by using the measured data of only one landslide section, showing the effectiveness of the proposed method.

关 键 词：边坡工程 抗剪强度参数 反演分析 数据表法 极限分析上限法 

分 类 号：P642[天文地球—工程地质学]