| 无黏性有限土体主动土压力的计算分析 |
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| 引用本文： | 马石城,宁源,印长俊.无黏性有限土体主动土压力的计算分析[J].路基工程,2017,0(5):38-42. |
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| 作者姓名： | 马石城 宁源 印长俊 |
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| 作者单位： | 湘潭大学土木工程与力学学院, 湖南湘潭 411105 |
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| 摘 要： | 经典土压力理论均建立在半无限土体假定的基础之上，然而对于有限土体一般沿用经典土压力理论，这将与实际情况存在较大差异。通过对有限土体进行完整的受力分析，建立有限土体土压力计算模型，基于极限平衡理论及平面滑裂面假定，考虑了既有建筑地下室与有限土体间的相互作用力，建立无黏性有限土体主动土压力计算公式，推导出无黏性有限土体主动土压力系数表达式，并与数值模拟结果进行对比分析，该公式的计算结果与数值模拟结果吻合较好。
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| 关 键 词： | 有限土体 主动土压力 无黏性土 滑裂面 |
| 收稿时间： | 2019-11-12 |
Analytic Calculation on Active Earth Pressure of Limited Cohesionless Soil |
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| Abstract: | The classical theory of earth pressure, which is based on the assumption of semi-infinite soil, is applied to limited soil generally, leading to great difference from actual situation. Depending on the complete mechanical analysis of limited soil, the calculation model for earth pressure of limited soil was established; simultaneously, depending on the assumption of limit equilibrium theory and plane slip surface, with the interaction between the basement of existing building and the limited soil taken into consideration, the formula calculating active earth pressure of limited cohesionless soil was built, and the coefficient expression thereof derived; then by comparison with the result of numerical simulation, it was found that the results from this formula and the numerical simulation were consistent. |
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