极限平衡法求解加筋土挡墙墙背土压力的通用公式研究  

General Formulas for Predicting the Earth Pressure Acting on Back of Reinforced Retaining Wall Using Limit Equilibrium Method

作　　者：黄向京[1,2] 刘哲哲[2] 杨果林[2] 

机构地区：[1]湖南交通规划勘察设计院,湖南长沙410008 [2]中南大学土木建筑学院,湖南长沙410075

出　　处：《公路工程》2010年第1期13-17,55,共6页Highway Engineering

基　　金：湖南省交通科技项目(200612)

摘　　要：基于极限平衡法,通过严密的数学推导和理论分析提出了适合任意土质、任意墙背倾角、任意单一斜度填料面的加筋土挡墙墙背主动土压力非线性分布的通用表达式,得出了加筋土挡墙土压力分布和合力作用点的高度计算公式。通过泥质红砂岩土石混合填料加筋土挡墙工程现场实测土压力值进行了对比分析,结果表明:上述计算方法合理,计算值与实际相符,拓宽了朗肯土压力理论库仑土压力理论应用范围,可直接应用于工程设计。Based on limit equilibrium method, general formulas were deduced for predicting the nonlinear distributed active earth pressure acting on back of reinforced retaining wall with any backfill, any inclination of back, as well as any single slope of filling surface. Expressions of resultant force and height of action point of the resultant force were obtained. Comparative analysis was conducted between measured values and calculated values of active earth pressure of reinforced retaining wall with shaly red sand stone filling. The analysis results indicate that the general formulas which widen the application range of Rankine＇ s earth pressure theory and Coulomb＇ s used in engineering design. earth pressure theory are reasonable and can be

关 键 词：土力学 极限分析 加筋土挡墙 主动土压力 筋带拉力 通用公式 对比分析 

分 类 号：TU432[建筑科学—岩土工程]