| 挡土墙后曲面滑裂面下黏性土主动土压力计算 |
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| 引用本文： | 王奎华,马少俊,吴文兵.挡土墙后曲面滑裂面下黏性土主动土压力计算[J].西南交通大学学报,2011(5):732-738. |
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| 作者姓名： | 王奎华 马少俊 吴文兵 |
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| 作者单位： | 浙江大学岩土工程研究所;浙江省建筑设计研究院结构与岩土工程研究室; |
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| 基金项目： | 国家自然科学基金资助项目(50879077) |
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| 摘 要： | 为了研究挡土墙后土体滑裂面的形状并计算土压力,建立了挡土墙后黏性填土滑动楔体达到极限平衡状态时的静力平衡方程.采用变分学方法求解滑裂面曲线方程和主动土压力的计算公式,得到土体滑裂面曲线为一对数螺旋线.将主动土压力计算值与库仑主动土压力、工程实测值分析对比.结果表明,计算所得的主动土压力值比广义库仑理论的计算值大5.37%,且与工程实测值较为接近.最后分析了挡土墙及墙后填土各参数对曲面滑裂面下的主动土压力值的影响,可知填土的黏聚力和内摩擦角是影响土压力值的关键参数.
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| 关 键 词： | 挡土墙 主动土压力 曲面滑裂面 主动土压力系数 |
Active Earth Pressure of Cohesive Soil Backfill on Retailing Wall with Curved Sliding Surface |
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| WANG Kuihua,MA Shaojun,WU Wenbing.Active Earth Pressure of Cohesive Soil Backfill on Retailing Wall with Curved Sliding Surface[J].Journal of Southwest Jiaotong University,2011(5):732-738. |
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| Authors: | WANG Kuihua MA Shaojun WU Wenbing |
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| Institution: | WANG Kuihua1,MA Shaojun1,2,WU Wenbing1(1.Institute of Geotechnical Engineering,Zhejiang University,Hangzhou 310027,China,2.Structure and Geotechnical Engineering Laboratory,Zhejiang Province Architectural Design and Research Institute,China) |
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| Abstract: | In order to determine the sliding surface form of the soil backfill and calculate the earth pressure,static equilibrium equations of sliding wedge were built for cohesive soil backfill by limit equilibrium method.Then,the equation of the sliding surface and the analytical expression for the total active earth pressure were derived using the variational method.As a general result,a log-spiral sliding surface was obtained.The calculated active earth pressure values were compared with those obtained by Coulomb... |
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| Keywords: | retaining wall active earth pressure curved sliding surface coefficient of active earth pressure |
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