| 基于非牛顿指数描述的饱和黏土一维非线性固结分析 |
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| 引用本文： | 丁立,郑强.基于非牛顿指数描述的饱和黏土一维非线性固结分析[J].河南科学,2015(2):237-242. |
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| 作者姓名： | 丁立 郑强 |
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| 作者单位： | 1. 河海大学岩土力学与堤坝工程教育部重点实验室,南京,210098
2. 河海大学岩土工程科学研究所,南京,210098 |
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| 摘 要： | 在考虑半对数应力应变关系的基础上,引入非牛顿指数描述的非达西渗流模型,建立一维固结方程,采用有限差分法求其数值解,并与Terzaghi解答和Davis解答对比验证数值方法的有效性.据此,分析土体应力应变非线性和渗流的非达西特性对饱和粘土一维固结的影响.结果表明,非牛顿指数i0越大,土层厚度与地基平均竖向总应力的等效水头的比值越大,固结速率越低;地面荷载越大,孔压消散速率和地基沉降速率都越快,按沉降定义的固结度要略大于按孔压定义的固结度;压缩指数与渗透指数的比值越大,固结速率越慢;初始有效应力越大,固结速率越快.
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| 关 键 词： | 饱和粘土 非达西渗流 一维非线性固结 孔隙水压力 有限差分 |
One-dimensional Nonlinear Consolidation Analysis of Saturated Clay with Non-Darcy Flow Described by Non-Newtonian Index |
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| Ding Li,Zheng Qiang.One-dimensional Nonlinear Consolidation Analysis of Saturated Clay with Non-Darcy Flow Described by Non-Newtonian Index[J].Henan Science,2015(2):237-242. |
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| Authors: | Ding Li Zheng Qiang |
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| Institution: | Ding Li;Zheng Qiang;Key Laboratory of Geomechanics and Embankment Engineering of Ministry of Education,Hohai University;Geotechnical Research Institute,Hohai University; |
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| Abstract: | |
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| Keywords: | saturated clay non-Darcy flow one-dimensional nonlinear consolidation pore water pressure finite difference method |
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