| 渐近状态土压力计算方法 |
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| 引用本文： | 崔文杰,姚仰平.渐近状态土压力计算方法[J].岩土力学,2010,31(11):3574-3578. |
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| 作者姓名： | 崔文杰 姚仰平 |
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| 作者单位： | 北京航空航天大学 交通科学与工程学院，北京 100191 |
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| 基金项目： | 国家自然科学基金资助项目（No. 50879001, No.90815024, No. 10872016）。 |
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| 摘 要： | 挡土墙侧向土压力主要取决于墙体位移条件。在考虑土体平面应变简单加载条件下不同方向主应力的大小关系以及砂土剪胀特性的基础上，由砂土渐近状态公式得到挡土墙主动位移土压力区和被动位移土压力区任意墙体位移条件下侧向土压力系数K的计算公式。与已有方法相比，通过引入渐近状态准则，考虑了砂土剪胀特性对土压力大小的影响，计算参数确定方法试简单。通过与模型试验的对比，验证了该公式的合理性。
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| 关 键 词： | 侧向土压力系数 侧向位移 应变增量比 渐近状态 挡土墙 |
| 收稿时间： | 2009-09-15 |
Calculation method of earth pressure under any lateral displacement considering asymptotic state |
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| CUI Wen-jie,YAO Yang-ping.Calculation method of earth pressure under any lateral displacement considering asymptotic state[J].Rock and Soil Mechanics,2010,31(11):3574-3578. |
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| Authors: | CUI Wen-jie YAO Yang-ping |
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| Institution: | School of Transportation Science and Engineering, Beihang University, Beijing 100191, China |
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| Abstract: | The lateral earth pressure of retaining wall mainly depends on the displacement of the wall. The calculation method of earth pressure coefficient under any lateral displacement is obtained based on the asymptotic state formula of sand, which describes the different stress-strain relationships of soil under different constraint conditions of deformation, considering the relationship between principal stresses in the plane strain state and the dilatancy behavior of sand. The parameters in the formulations can be determined through simple tests. Compared with model test results, the reasonableness of the proposed method is verified. |
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| Keywords: | lateral earth pressure coefficient lateral displacement strain increment ratio asymptotic state retaining wall |
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