摘要
以广州花都某高速公路滑坡治理工程为例,对同时存在软弱夹层和多级滑面的顺层路堑边坡变形失稳机制及稳定性进行了综合分析和判定。在碎石反压应急处理的基础上,结合反压体分别采用极限平衡法和有限元法进行边坡分析计算,考虑各种制约因素后采用预应力锚索和圆形抗滑桩综合治理措施。根据施工和运营期间监测情况可知,滑坡治理效果良好。
Taking landslide treatment of an expressway in Huadu,Guangzhou as an example,the instability and deformation mechanism of bedding cutting slope with soft interlayer and multistage sliding surface was analyzed,and the stable state of slope was determined.On the basis of the emergency treatment of gravel back pressure,combined with the back pressure body,limit equilibrium method and finite element method were used to analyze and calculate.Considering all kinds of restraining factors,the comprehensive treatment measures of prestressed anchor cable and circular anti-slip pile were adopted.According to the monitoring situation during construction and operation,the landslide treatment is effective.
作者
王瑞春
王雪彤
Wang Ruichun;Wang Xuetong(Guangzhou Municipal Engineering Design and Research Insititute Co.,Ltd.,Guangzhou 510060,Guangdong,China)
出处
《岩土工程技术》
2022年第6期469-476,共8页
Geotechnical Engineering Technique
关键词
软弱夹层
多级滑面
路堑边坡
滑坡
圆形抗滑桩
反压应急处理
soft interlayer
multistage slip surface
cutting slope
landslide
circular anti-slip pile
back pressure emergency treatment
