基于强度折减的加筋软土路堤边坡稳定分析  

Slope Stability Analysis Method Based on Strength Reduction for Reinforced Embankment on Soft Clay Deposit

作　　者：蔡晓光[1] 范丽远[1] 谢长旺[1] 王根龙[1] 

机构地区：[1]防灾科技学院防灾工程系,河北三河065201

出　　处：《施工技术》2010年第2期70-73,共4页Construction Technology

基　　金：中国地震局教师科研基金资助(20090110);中国地震局工程力学所2009年开放实验室项目资助

摘　　要：现行的加筋路堤稳定分析方法无法真实反映土工织物垫层对软土路堤稳定性的贡献,使计算的安全系数提高很少。利用基于强度折减的边坡稳定分析方法,模拟筋材与土体的相互作用,可分析加筋软土路堤的边坡稳定性。建议取边坡无量纲位移突变时刻对应的强度折减系数作为安全系数。经过三茂铁路路堤验算,计算的安全系数与传统加筋路堤稳定分析方法相比大幅提高,并与实测结果较为符合。最后,利用本文给出方法计算复合加筋排水褥垫加固路堤的稳定性。The contribution of reinforced cushion to the stability of embankment can not be considered in current analysis method.A slope stability analysis method based on strength reduction for reinforced embankment is proposed.The strength reduction multiplier corresponding to that critical time step was suggested as safety factor of the slope.The results of an engineering example indicated that the proposed method in more reasonable and more close to true fact.The stability of embankment improved by combined drainage and reinforcement cushion is analyzed by the proposed method.

关 键 词：堤坝 土工织物 边坡稳定分析 强度折减法 复合加筋排水褥垫 

分 类 号：TU43[建筑科学—岩土工程]