考虑土拱效应的黏性填土挡土墙主动土压力研究

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摘要以墙后填土为黏性土的刚性挡土墙为研究对象，考虑挡土墙后的土拱效应，以及墙土摩擦角、墙土黏结力、墙后填土黏聚力的影响，推导挡土墙在平动模式下的主动土压力系数和主动土压力解析解。结果表明，考虑土拱效应的主动土压力系数和主动土压力均与墙土摩擦角、计算点深度以及墙后填土的内摩擦角、黏聚力及重度有关。通过将求解的主动土压力系数和主动土压力与现有经典理论解及前人理论研究成果对比，发现结果完全吻合，验证该研究结果的正确性。

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关键词 ：土力学, 主动土压力, 挡土墙, 土拱效应

Abstract：Analytical expressions for the active earth pressure ratio and active earth pressure are derived，against on a rigid retaining wall from clayey backfill undergoing horizontal translation，considering the soil arching effects and the influence of soil-wall friction angle，wall adhesion and cohesion of backfill. The results show that the active earth pressure ratio and active earth pressure are related to soil-wall friction angle，depth of the point and the internal friction angle，cohesion，unit weight of the backfill. The theoretical comparisons between the analytical expressions proposed for active earth pressure ratio and active earth pressure and the existing classical theory，the previous research results show great agreement with each other，so as to verity the correctness of the results in this paper.

Key words： soil mechanics active earth pressure retaining wall soil arching effects

收稿日期: 2011-12-23

引用本文:

涂兵雄，贾金青. 考虑土拱效应的黏性填土挡土墙主动土压力研究[J]. 岩石力学与工程学报, 2012, 31(5): 1064-1070.
TU Bingxiong，JIA Jinqing. RESEARCH ON ACTIVE EARTH PRESSURE BEHIND RIGID RETAINING WALL FROM CLAYEY BACKFILL CONSIDERING SOIL ARCHING EFFECTS. , 2012, 31(5): 1064-1070.

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http://www.rockmech.org/CN/Y2012/V31/I5/1064

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