地震条件下成层黏土挡墙土压力及其分布的微分薄层法  

Seismic Earth Pressures behind a Clay-Filled Retaining Wall and Its Differential Thin Layer Method

作　　者：徐利敏[1] 孙勇[1] 陈延伟[1] 

机构地区：[1]贵州大学喀斯特环境与地质灾害防治教育部重点实验室,贵阳550003

出　　处：《土工基础》2015年第2期86-91,共6页Soil Engineering and Foundation

基　　金：国家自然科学基金(51168009);贵州省自然科学基金(J2245);贵州省省长基金(2011-35)

摘　　要：研究了地震条件下分层土挡土墙土压力的计算方法,经与朗肯、库伦土压力理论公式的计算结果相比,有很好的吻合性。以往所研究的解析解均是针对单一、均质、各向同性填土推导的,而文中计算公式和方法则可适用于多层不同性质填土的挡土墙土压力的计算。并且与以往相关研究的结论—-即主动土压力合力的作用点位置高于朗肯、库伦土压力合力作用点位置,主动土压力合力的作用点位置高于朗肯、库伦土压力合力作用点位置是一致的。提出的方法适用于多层性质不一样填土的挡土墙土压力的计算,有一定实用意义。The earth pressures behind a retaining wall are still studied by the geotechnical researchers and practitioners. This paper presents the research results of the earth pressures under the seismic conditions. The results are compared with the Rankine, and Coulomb earth pressure theories and it is found to be consistent. However, the existing earth pressure formulas are for the uniform and isotropic single soil layer, this paper presents the results for estimating the earth pressures for the multilayer backfill soils with different properties. The results indicate that the combined force of active earth pressures is higher than those of the Rankine and Coulomb earth pressures and the results are consistent with several previous results.

关 键 词：地震 挡土墙 土压力 分层填土 

分 类 号：TU432[建筑科学—岩土工程]