| 基于热力学基础上的非饱和砂土本构模型-理论研究 |
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| 引用本文： | 张卫华,赵成刚,郜新军,董晓丽.基于热力学基础上的非饱和砂土本构模型-理论研究[J].工程地质学报(英文版),2014,22(6):1094-1101. |
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| 作者姓名： | 张卫华 赵成刚 郜新军 董晓丽 |
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| 作者单位： | 1.北京交通大学土木建筑工程学院 北京 100044; |
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| 基金项目： | 国家自然科学基金(50906020)资助． |
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| 摘 要： | 热力学是一种普适理论,因此非饱和砂土的变化过程必然也遵循热力学原理。利用热力学原理可以从更普遍的情况(条件)和更一般的视角审视非饱和土的水力-力学性质。本文基于热力学理论并考虑砂土的剪胀-各向异性以及塑性耗散之间的关系,建立固-液两相耦合的非饱和砂土本构模型的理论框架,更深入地揭示非饱和砂土复杂的行为和性质。
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| 关 键 词： | 非饱和砂土 热力学 剪胀 耗散函数 |
| 收稿时间： | 2013-10-30 |
THERMODYNAMICS BASED CONSTITUTIVE MODEL FOR UNSATURAT-ED SANDS |
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| ZHANG Weihua,ZHAO Chenggang,GAO Xinjun,DONG Xiaoli.THERMODYNAMICS BASED CONSTITUTIVE MODEL FOR UNSATURAT-ED SANDS[J].Journal of Engineering Geology,2014,22(6):1094-1101. |
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| Authors: | ZHANG Weihua ZHAO Chenggang GAO Xinjun DONG Xiaoli |
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| Institution: | 1.School of Civil Engineering, Beijing Jiaotong University, Beijing 100044;2.Beijing City University, City Construction Department, Beijing 100083;3.School of Civil Engineering, Zhengzhou University, Zhengzhou 450001 |
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| Abstract: | The mechanical behavior of unsaturated sands inevitably follows the principles of thermodynamics. By this method, we can study the hydraulic-mechanical behavior of soils with a general insight under a more universal law. Based on thermodynamical theory, and considering the relations among dilatancy, anisotropy and plastic dissipation of sands, a solid-liquid coupled constitutive modeling framework is established which can deeply indicate many complex behavior and properties for unsaturated sands. |
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| Keywords: | Unsaturated sands Thermodynamics Dilatancy Dissipation function |
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