地震作用下土岩二元结构边坡位移和土压力的响应分析  

Response Analysis of Displacement and Soil Pressure of Soil-rock Dual Structure Slope under Earthquake

作　　者：林翔 LIN Xiang(Minjiang University,Fuzhou 350100,China)

机构地区：[1]闽江学院,福州350100

出　　处：《路基工程》2021年第1期163-167,共5页Subgrade Engineering

摘　　要：以海西福永高速公路某标段边坡工程为依托,运用FLAC3D5.0数值软件对锚索-框架梁支护下的土岩二元结构边坡进行了地震作用数值模拟,分析了锚框支护土岩二元结构边坡在地震作用下水平位移和动土压力的响应。结果表明:地震作用下边坡土体水平位移响应随高程增加而增大;地震强度增加,边坡土体水平位移响应增加;PEP震荡系数与埋深呈负相关;地震强度增加时,PEP震荡系数增加。Based on the slope engineering of a section in Fuyong expressway,using the FLAC3D5.0 numerical software,the soil-rock dual structure slope supported by anchor cable-frame beam under earthquake was simulated numerically.The response of horizontal displacement and dynamic earth pressure of the soil-rock dual structure slope supported by anchor frame was analyzed.The results show that the horizontal displacement response of slope soil is increased with the increase of elevation.The seismic intensity increases and the horizontal displacement response of slope soil is increased.The coefficient of PEP oscillation is negatively correlated with burial depth;when the earthquake intensity increases,the coefficient of PEP oscillation increases.

关 键 词：边坡工程 锚框支护 地震动力响应 数值模拟 二元结构边坡 

分 类 号：U416.14[交通运输工程—道路与铁道工程]