| 土的基本力学特性及其弹塑性描述 |
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| 引用本文： | 姚仰平,侯伟.土的基本力学特性及其弹塑性描述[J].岩土力学,2009,30(10):2881-2902. |
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| 作者姓名： | 姚仰平 侯伟 |
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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，博士后基金 |
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| 摘 要： | Cam-clay模型是在等向加载试验基础上建立起来的且能够描述正常固结土在常规三轴试验条件下应力-应变关系的最简单弹塑性模型，是建立各种土的弹塑性本构模型的基础。文中分别按加载方式的不同和土组构的不同，对描述与应力状态、应力历史、应力路径、持荷时间等因素有关的加载方式下土应力应变特性的弹塑性本构模型进行了归纳。对反映不同组构所形成的结构性、各向异性和颗粒破碎等特性的弹塑性本构模型进行了综述，并着重介绍了描述应力状态的三维化方法、反映应力历史影响的超固结土模型和模拟渐近状态路径的渐近状态模型等典型研究成果。
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| 关 键 词： | 土 加载方式 组构 应力应变特性 弹塑性模型 |
| 收稿时间： | 2009-08-21 |
Basic mechanical behavior of soils and their elastoplastic modeling |
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| YAO Yang-ping,HOU Wei.Basic mechanical behavior of soils and their elastoplastic modeling[J].Rock and Soil Mechanics,2009,30(10):2881-2902. |
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| Authors: | YAO Yang-ping HOU Wei |
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| Institution: | School of Transportation Science and Engineering, Beihang University, Beijing 100191, China |
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| Abstract: | Based on the study of the isotropic loading test, the Cam-clay model has been established as the simplest elastoplastic model to describe the stress-strain relationships of normally consolidated clay in triaxial compression test, which is the basis to propose other models. According to the difference in loading modes and fabric characteristics, elastoplastic models describing stress-strain relationships under loading modes related to stress state, stress history, stress paths, loading time etc. are summarized. And elastoplastic models describing behaviors of soil structure, anisotropy and particle crushing etc. are summed up as well. Also, the transformed stress method representing the three dimensional property of soils, over-consolidated clay model describing the stress history effect and the asymptotic state model simulating asymptotic state path are introduced in detail. |
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| Keywords: | soils loading modes fabric characteristics stress-strain relationship elastoplastic model |
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