| 粘性土各向异性特性的PFC数值模拟 |
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| 引用本文： | 高彦斌,王江锋,叶观宝,李伟,徐超.粘性土各向异性特性的PFC数值模拟[J].力学学报,2009,17(5):638-642. |
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| 作者姓名： | 高彦斌 王江锋 叶观宝 李伟 徐超 |
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| 作者单位： | （同济大学岩土及地下工程教育部重点实验室,上海,200092）
（同济大学 地下建筑与工程系,上海,200092）
（上海岩土工程勘察设计研究院有限公司,上海,200438） |
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| 摘 要： | 本文采用PFC2D来建立能够反映粘性土微观结构的模型,对不同方向的切样分别进行剪切试验,得到不同方向上剪切的应力应变曲线、剪应变-体应变曲线,求得不同方向上的弹性模量、泊松比、体积模量和剪切模量4个参数,得到其变化规律。粘性土各个方向上剪切强度峰值强度基本沿竖直方向对称分布,呈现出由竖直方向到水平方向剪切的峰值强度由大到小的变化规律。
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| 关 键 词： | 粘性土 PFC2D 各向异性 微观结构 |
PFC NUMERICAL SIMULATION ON ANISOTROPIC PROPERTIES|OF COHESIVE SOIL |
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| GAO Yanbin|WANG Jiangfeng|YE Guanbao|LI Wei|XU Chao.PFC NUMERICAL SIMULATION ON ANISOTROPIC PROPERTIES|OF COHESIVE SOIL[J].chinese journal of theoretical and applied mechanics,2009,17(5):638-642. |
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| Authors: | GAO Yanbin|WANG Jiangfeng|YE Guanbao|LI Wei|XU Chao |
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| Institution: | (Key Laboratory of Geotechnical and Underground Engineering|Tongji University, Ministry of Education, Shanghai|200092)
(Department of Geotechnical Engineering Tongji University, Shanghai|200092)
(Shanghai Geotechnical Investigations Design &|Institute Co., Ltd., Shanghai|200438) |
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| Abstract: | Uses PFC2D to set up the model of reflecting the microstructure of cohesive soil. Then, numerical shear tests with different directions are carried out. The shear stress-strain curves and shear strain-volumetric strain curves are obtained. The elastic modulus, Poisson's ratio, bulk modulus and shear modulus under different directions are calculated from the numerical curves. The shear peak strength of cohesive soil in each direction is further studied. Basically, the peak shear strength reduces from the vertical to the horizontal orientations. The results show the feasibility of using PFC2D to model the anisotropic behavior of cohesive soil with the consideration of its internal micro-structure. |
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| Keywords: | Cohesive soil " target="_blank">2Dzz')" href="#"> PFC2D Anisotropy Microstructure Numerical test |
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