| 非线性被动土压力 |
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| 引用本文： | 吴明,夏唐代,许军平,孙苗苗.非线性被动土压力[J].煤田地质与勘探,2009,37(2). |
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| 作者姓名： | 吴明 夏唐代 许军平 孙苗苗 |
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| 作者单位： | 浙江大学软弱土与环境土工教育部重点实验室,浙江,杭州,310027 |
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| 摘 要： | 用双曲线数学模型描述被动土压力变化和挡土结构位移变化的关系.基于Mindlin弹性解,推导了土体某深度矩形区域作用均布水平荷载时该矩形区域内任意点水平位移的表达式,并用该表达式确定双曲线模型初始刚度.应用对数螺旋线被动土压力理论求解被动土压力,把该法求解的做图过程转化为数学迭代过程.算例表明,这样的被动土压力理论概念明确,结果准确.
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| 关 键 词： | 被动土压力 Mindlin解 水平荷载 对数螺旋线理论 |
Nonlinear passive earth pressure |
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| WU Ming,XIA Tangdai,XU Junping,SUN Miaomiao.Nonlinear passive earth pressure[J].Coal Geology & Exploration,2009,37(2). |
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| Authors: | WU Ming XIA Tangdai XU Junping SUN Miaomiao |
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| Institution: | 1.Key Laboratory of Soft Soils and Geoenvironmental Engineering;Ministry of Education;Zhejiang University;Hangzhou 310027;China |
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| Abstract: | The nonlinear relationship between the passive earth pressures and retaining wall deflection is approxi-mated using the general form of a hyperbolic equation.Based on the Mindlin elastic solution,an equation is inte-grated for the horizontal displacement of any point of a vertical plane when a rectangular area with the plane is subjected to uniform normal loading.The equation can compute the initial stiffness of hyperbola.The Log Spiral theory is employed in computing the ultimate passive earth pressure whi... |
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| Keywords: | passive earth pressure Mindlin solution lateral load Log Spiral theory |
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