| 孔隙液体的可压缩性对非饱和孔隙介质弹塑性分析的影响 |
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| 引用本文： | 杨松岩.孔隙液体的可压缩性对非饱和孔隙介质弹塑性分析的影响[J].岩土力学,1998,19(3):20-26. |
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| 作者姓名： | 杨松岩 |
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| 作者单位： | 西安交通大学建筑工程与力学学院!710049 |
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| 基金项目： | 国家自然科学基金!59779028 |
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| 摘 要： | 首先在多相孔隙介质的混合物理论框架内探讨了如何利用固-液两相孔隙介质模型描述介质的非饱和问题。其次，讨论了一个实用的描述孔隙液体可压缩性的方法，并建立了小变形条件下固-液两相孔隙介质的弹塑性本构方程。最后，采用俞茂宏统一强度理论，针对一个具体的结构例子，分析了孔隙液体的可压缩性对结构弹塑性分析的影响。
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| 关 键 词： | 非饱和孔隙介质 混合物理论 液相可压缩性 弹塑性分析 俞茂宏统一强度理论 |
The Influence of the Compressibility of Pore Fluid on the Elasto-plastic Analysis of Non-Saturated Porous Media |
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| Yang Songyan, Yu Maohong, Zhao Junhai.The Influence of the Compressibility of Pore Fluid on the Elasto-plastic Analysis of Non-Saturated Porous Media[J].Rock and Soil Mechanics,1998,19(3):20-26. |
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| Authors: | Yang Songyan Yu Maohong Zhao Junhai |
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| Abstract: | This paper introduces the theory of mixture, a suitable method for treating multi-phase porous media with non-uniform mesostructures. In the frame of this theory, by means of the extent of compressibility of pore fluid, a new possible method is proposed to describe the non-saturated properties of porous media by using a solid-fluid model instead of the traditional solid-fluid-gas model. By adopting this method, under the condition of small deformation, elastic-plastic constitutive equation of solid-fluid porous media established. Elasto-plastic finite element analysis based on the proposed constitutive equation and the Yu unified strength is also performed to study the influence of compressibility of pore fluid on the elastic limit load and load deformation relation of an example structure. |
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| Keywords: | non saturated porous media theory of mixture compressibility of pore fluid elasto-plastic analysis Yu unified strength theory |
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