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以墙后填土为无黏性土的刚性挡土墙为研究对象,考虑墙后土体的土拱效应,修改了Shubhra Geol抛物线形土拱表达式,推导了对应不同内摩擦角和墙-土摩擦角的挡土墙平动模式下的主动土压力系数。基于水平微分单元法,得到考虑土拱效应的主动土压力分布、合力大小和合力作用点高度的理论表达式,并与现有经典理论解及前人理论研究成果和模型试验数据进行对比分析,结果表明,主动土压力与墙-土接触面摩擦角、土体内摩擦角、土体重度和挡墙高度相关,土压力分布为非线性,与其他结果比较吻合,从而验证了该研究成果的正确性。
Taking the rigid retaining wall with backfill as non-cohesive soil as the research object and considering the soil arching effect of the soil behind the wall, the parabolic earth-arch expression of Shubhra Geol was modified and the corresponding relationships between different internal friction angles and wall- Active Earth Pressure Coefficient in Retaining Wall Translational Mode with Soil Friction Angle. Based on the horizontal differential element method, the theoretical expressions of active earth pressure distribution, resultant force magnitude and the height of resultant force point considering the soil arching effect are obtained and compared with the existing classical theoretical solutions and predecessor theoretical research results and model test data. The results show that the active earth pressure is related to the friction angle of the soil-wall contact surface, the friction angle of the soil body, the soil mass and the height of the retaining wall, and the earth pressure distribution is nonlinear, which is in good agreement with other results. Sex.