| 任意位移模式刚性挡土墙土压力研究 |
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| 引用本文： | 卢坤林,朱大勇,杨扬.任意位移模式刚性挡土墙土压力研究[J].岩土力学,2011,32(Z1):370-0375. |
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| 作者姓名： | 卢坤林 朱大勇 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 |
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| 基金项目： | 国家自然基金资助项目(No.40772172);国家973计划项目(No.2008CB425801) |
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| 摘 要： | 改进了水平层分析法,用于计算任意位移模式的土压力分布。对不同位移模式下水平微分单元进行受力分析,认为位移模式只影响了层间等效内摩擦角。根据前人提出的内摩擦角逐渐发挥的概念,将层间等效内摩擦角与挡土墙位移模式联系起来,并应用到水平层分析法中,实现了能够定量反映位移模式的土压力计算方法。分析表明:随位移模式变化,土压力合力大小始终保持不变且与库仑理论计算结果相一致,土压力分布和合力作用点则变化显著。试验数据验证了方法的合理性和可靠性。研究成果可供刚性挡土墙土压力计算参考。
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| 关 键 词： | 挡土墙 土压力 位移模式 水平层分析法 等效内摩擦角 |
| 收稿时间： | 2010-07-04 |
Study of earth pressure against rigid retaining wall with arbitrary displacement modes |
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| LU Kun-lin,ZHU Da-yong,YANG Yang.Study of earth pressure against rigid retaining wall with arbitrary displacement modes[J].Rock and Soil Mechanics,2011,32(Z1):370-0375. |
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| Authors: | LU Kun-lin ZHU Da-yong YANG Yang |
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| Institution: | School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | The method of level-layer analysis is improved to calculate the earth pressure with arbitrary displacement modes. By the stress analysis of the differential element under different displacement modes, it is supposed that the displacement mode only influences the equivalent internal friction angle of interlayer. And the relationship between them is incorporated into the method of level-layer analysis with the existing concept that the internal friction angle acts gradually; and then a new calculation method of earth pressure that quantifies the displacement mode is proposed. Further study indicates that the resultant earth pressure is independent from displacement mode and consistent with the results of Coulomb’s theory; but the distribution of earth pressure and the point of application of the resultant earth pressure vary greatly with the displacement mode. The results are in agreement with the experimental ones. So the presented mothed can be a reference for the calculation of rigid retaining walls. |
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| Keywords: | retaining wall earth pressure displacement mode method of level-layer analysis equivalent internal friction angle |
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