一般应力状态下挡土墙上主动土压力研究  

Research on Active Soil Pressure on Retaining Wall Under General Stress States

作　　者：杨雪强[1] 吴子超[1] 杨宗轲[1] 

机构地区：[1]广东工业大学土木与交通工程学院,广东广州510006

出　　处：《中国公路学报》2010年第2期25-29,70,共6页China Journal of Highway and Transport

基　　金：广东省教育厅科研基金项目(2008278)

摘　　要：将Lade-Duncan破坏准则应用于求解挡土墙上的主动土压力,在平面应变状态下,通过在π平面上采用与Lade-Duncan破坏准则等效面积的Drucker-Prager破坏准则,且借助等效内摩擦角的概念,提出了计算挡土墙上主动土压力的新方法,并与传统的库仑法、朗肯法和有限元数值模拟等计算结果进行了比较。结果表明:该方法计算过程简便,计算结果准确,是计算挡土墙上主动土压力的合理方法,有一定的工程实用价值。Lade-Duncan failure criterion was applied to solution of active soil pressure on retaining wall plane. Through using an equivalent area Drucker-Prager failure criterion transformed from Lade-Duncan failure criterion on π plane, a corresponding new method of calculating active soil pressure was given based on an equivalent soil internal frictional angle under plane stress state. Authors compared the calculating results of new method with those of traditional Coulomb method, Rankine method and FEM. The result shows that using the method, its calculated process is simple and its calculated result is accurate. It is a reasonable method of calculating active soil pressure on retaining wall and has practical significance in construction.

关 键 词：道路工程 挡土墙 Lade-Duncan破坏准则 主动土压力 平面应变状态 

分 类 号：U417.11[交通运输工程—道路与铁道工程]