天然土岩分层边坡扶壁式挡土墙的土压力及稳定分析  

Earth Pressure and Stability Analysis of Buttressed Retaining Wall for Natural Layered Slope

作　　者：彭亚敏[1] 沈振中[1] 沈心哲 毕佳蕾 

机构地区：[1]河海大学水利水电学院,江苏南京210098

出　　处：《水电能源科学》2017年第5期136-139,共4页Water Resources and Power

基　　金：国家自然科学基金项目(51279054);江苏省水利科技项目(20168048916)

摘　　要：针对复杂条件下挡土墙的土压力无法按照传统土压力理论计算的问题,提出了天然土岩分层边坡扶壁式挡土墙的土压力分析方法。结合某水库左岸边坡扶壁式挡土墙工程,采用三维数值方法及强度折减法,计算出边坡的最小抗滑稳定安全系数及相应滑动面,从而求得边坡滑动体作用于挡土墙的作用力和作用方向,并依此计算了挡土墙的抗滑及抗倾覆稳定安全系数,实现了挡土墙的稳定安全评价。计算结果表明,该挡土墙在不同工况下抗滑和抗倾覆稳定安全系数均大于允许值,符合实际情况,可为类似工程提供参考。Earth pressure can not be calculated easily by the traditional theory under complex conditions.This paper presents a method to study on the earth pressure and stability analysis.Safety factors and sliding surfaces of slope about buttressed retaining wall on the left bank of a reservoir are obtained by three-dimensional numerical method and strength reduction method.As a result,the pressure can be acquired to calculate the anti-sliding coefficient sand anti-capsize coefficients for safety evaluation of the buttressed retaining wall.The results show that under different operating conditions,the safety factors are greater than the allowable value.In contrast to previous methods used in the natural layered slope,this method is more realistic.Thu,it can provide reference for similar projects.

关 键 词：扶壁式挡土墙 数值方法 滑动面 稳定安全系数 稳定分析 土压力 

分 类 号：TV223[水利工程—水工结构工程]