利用离心模型试验求解岩质边坡抗滑稳定安全系数  

Using Geotechnical Centrifuge Model Test to Solve Rock Slope Safety Factor Against Sliding

作　　者：周浩[1] 郭永建[1] 郭风明 孙阳 

机构地区：[1]长安大学公路学院,西安710064 [2]山东省冶金设计院股份有限公司,济南250101 [3]西安瑞通路桥科技有限责任公司,西安710075

出　　处：《南水北调与水利科技》2012年第1期27-29,44,共4页South-to-North Water Transfers and Water Science & Technology

基　　金：交通部西部交通建设科研项目"陕川界至广元高速公路改扩建工程关键技术研究与示范"(2009310000003)

摘　　要：在离心模型试验的基础上,对岩质边坡安全系数与加速度增大系数之间的关系进行了研究,并以直线型滑动岩质边坡为例进行分析。推导了在支护与无支护两种边坡形态破坏时的离心加速度同安全系数之间的解析关系,通过两个推导公式分别可以确定任一离心加速度时的边坡安全系数,和支护状态下边坡达到极限平衡状态时的安全系数值,并将推导结果在岩质边坡试验中进行应用,得出了支护边坡的安全系数。为今后采用离心试验确定岩质边坡安全系数起到了一定的参考作用。The relationship between the slope safety factor and the acceleration increasing coefficient on the basis of the centrifu- gal model test is studied. Take the single-plane linear type sliding slope as an example, this paper derives the relationships be- tween the safety factor and the centrifugal acceleration with and without the supporting slope failure. These relationship equa- tions can be used to determine the slope safety factor under any centrifugal acceleration and the slope safety factor when the supporting slope reaches the state of limit equilibrium. The derived equations are applied in a rock slope test and the supporting slope safety factor is calculated. This paper can provide reference information for determining the safety factor of a rock slope based on the centrifugal test in future.

关 键 词：折减系数 离心加速度 岩质边坡 边坡失稳 岩土体强度 锚固 加速度增大系数 

分 类 号：TU411[建筑科学—岩土工程] U416.1[建筑科学—土工工程]