| 土压力研究中的两种思路 |
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| 引用本文： | 宋林辉,梅国雄,宰金珉,周 峰.土压力研究中的两种思路[J].岩土力学,2006,27(Z1):1183-1187. |
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| 作者姓名： | 宋林辉 梅国雄 宰金珉 周 峰 |
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| 作者单位： | 南京工业大学 土木工程学院， 南京 210009 |
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| 基金项目： | 霍英东青年教师基金(91076)；教育部科学技术研究重点项目（205058） |
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| 摘 要： | 到目前为止，土压力理论的研究可以归结成基于极限平衡理论的和基于半数值半解析方法的两种思路。土压力的经典理论都是建立在前者基础上的，它将土体视为弹性体、刚塑性土或弹塑性体，选择摩尔包线作为破坏准则，将问题简单化，得到的土压力理论值与实际值相差较大；而建立在半数值半解析方法上的土压力研究，则将函数表达式与计算机数值分析有机结合起来，综合考虑土体的变形、施工的时间以及土体的强度指标，使的土压力计算值与实际值比较吻合，所以后者开始成为土压力理论研究的新方向。
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| 关 键 词： | 土压力 极限平衡理论 半数值半解析方法 位移 |
| 收稿时间： | 2006-06-25 |
Two kinds of ways to research soil pressure |
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| SONG Lin-hui,MEI Guo-xiong,ZAI Jin-min,ZHOU Feng.Two kinds of ways to research soil pressure[J].Rock and Soil Mechanics,2006,27(Z1):1183-1187. |
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| Authors: | SONG Lin-hui MEI Guo-xiong ZAI Jin-min ZHOU Feng |
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| Institution: | College of civil Engineering, Nanjing University of Technology, Nanjing 210009, China |
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| Abstract: | So far, there are two kinds of ways to research soil pressure theory. One is based on limit equilibrium theory and another is based on semi-numerical & semi-analytical method. Classic theories of the soil pressure are obtained by the former, in which soil is regarded as elastomer, rigid-plastic or elastoplastic material. The invalidation of soil is judged by the Mohr strength envelope. In this way, the complex problems become simple. But the theoretical values of soil pressure are different from the actual values. However, for the soil pressure theory based on semi-numerical & semi-analytical method, the function expressions combine with numerical analysis successfully. In contrast with limit equilibrium theory, the later comprehensive considers the distortion of soil, the construction time and the strength index of soil, which make the calculation value of soil pressure in accordance with the actual value. In a word, the semi-numerical & semi-analytical method starts to become new way to research soil pressure. |
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| Keywords: | soil pressure limit equilibrium theory semi-numerical & semi-analytical method displacement |
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