| 考虑位移影响的主动土压力近似计算方法 |
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| 引用本文： | 卢坤林,杨扬.考虑位移影响的主动土压力近似计算方法[J].岩土力学,2009,30(2):553-557. |
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| 作者姓名： | 卢坤林 杨扬 |
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| 作者单位： | 合肥工业大学 土木与水利工程学院，合肥 230009 |
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| 摘 要： | 分析了位移对主动土压力的影响规律，发现主动土压力的大小取决于松弛应力与位移的关系。已有的研究表明：可以用双曲线函数模拟松弛应力与位移的关系，据此建立了考虑位移影响的主动土压力的近似计算方法。对两例离心试验数据拟合分析后，总结了公式中参数的近似表达式。模型试验和数值分析验证了该方法的正确性与合理性。在此基础上，推导了考虑位移影响的朗肯主动土压力理论，为主动土压力的计算提供了一种新的方法。
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| 关 键 词： | 主动土压力 位移 挡土墙 |
| 收稿时间： | 2007-01-16 |
Approximate calculation method of active earth pressure considering displacement |
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| LU Kun-lin,YANG Yang.Approximate calculation method of active earth pressure considering displacement[J].Rock and Soil Mechanics,2009,30(2):553-557. |
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| Authors: | LU Kun-lin YANG Yang |
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| Institution: | School of Civil Engineering, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | By studying the influence of displacement on active earth pressure, the active earth pressure depends mainly on the relationship between relaxed stress and displacement which can be agreed well by the hyperbolic-function through recent studies. Then the approximate mathematic expression of the active earth pressure considering displacement is given; and the expression of the parameter in terms of two centrifugal test results is derived. This method is feasible and reasonable according to model test and numerical calculation results. Finally, Rankine active earth pressure model considering displacement is also derived so as to offer a new way to calculate active earth pressure considering displacement. |
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| Keywords: | active earth pressure displacement retaining wall |
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