Analysis of Arching in Soil-Passive State
Analysis of Arching in Soil-Passive State
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DOI：
10.1007/s40098-012-0004-8
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发表时间：
2012-05
影响因子：
1.4
通讯作者：
R. Dalvi;P. Pise
中科院分区：
文献类型：
--
作者：
R. Dalvi;P. Pise
拱起涉及到应力从土壤的屈服部分转移到土壤的不屈服部分。许多学者认为主动土压力是一种阻尼作用。本文考虑了无粘性填土中被动土压力的阻尼作用。假定回填土由于重力作用呈悬链线拱向上移动。计算了土-墙摩擦角和土摩擦角的大主面角θw值。推导了考虑这些角的被动侧应力比表达式。通过算例分析了不同的墙内摩擦角和土内摩擦角对挡土墙上土压力分布的影响。并与模型试验结果进行了比较。
Arching involves stress transfer from yielding part of a soil to unyielding part of soil. Many authors considered arching action for active earth pressure. In this paper arching action is considered for passive earth pressure in noncohesive backfill. The backfill is assumed to move upward in a form of catenary arch due to arching. The value of θw(the angle of major principal plane) is calculated for soil-wall friction angle and soil friction angle. An expression for passive lateral stress ratio has been derived considering these angles. An illustrative example has been solved to show the effect on earth pressure distribution on retaining wall considering arching for different wall friction angles and soil friction angles. The applicability of proposed formulation is compared with model test results.