湖南大学学报（自然科学版）2013，Vol.40Issue(2)：9-14,6.
基于PSO搜索潜在滑裂面非极限状态土压力计算
Computation of Earth Pressure under Non-limit State Based on PSO Search of Potential Slip Surface
摘要
Abstract
The computation of earth pressure against rigid retaining wall usually adopts classical Ran-kine or Coulomb's theory, which can only get limit state of earth pressure, but in many practical cases, the earth pressure against retaining wall is in the non-limit state. So, this paper presented an analysis of the backfill under the mode of translation based on the improved thin-layer element method and the relationship between friction angle and displacement variation. The distribution of earth pressure, resultant force and its action point of a retaining wall under non- limit state were obtained. The optimal solution of earth pressure was obtained by using PSO (particle swarm optimization) to search the potential slip surface, on which the inclination angle of the segment for the thin layer element was extracted as a valuable. Then, the effects of the internal frictional angle, wall displacement on the distribution of earth pressure, resultant force, action point and potential slip surface were discussed. Finally, the results of the proposed method were compared with laboratory test data, which shows that the calculated results have a good agreement with the experimental observations.关键词
土压力/非极限状态/平动模式/水平层分析法/粒子群算法Key words
earth pressure/ non-limit state/ mode of translation/ thin-layer element method/ particle swarm optimization分类
建筑与水利引用本文复制引用
陈昌富,肖重阳,唐仁华..基于PSO搜索潜在滑裂面非极限状态土压力计算[J].湖南大学学报（自然科学版）,2013,40(2):9-14,6.基金项目
国家自然科学基金资助项目(50878082) （50878082）
