| 双层软土非线性固结理论研究 |
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| 引用本文： | 冶小平,万龙,赵杰伟,王志春,周舟.双层软土非线性固结理论研究[J].煤田地质与勘探,2010,38(2):28-31. |
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| 作者姓名： | 冶小平 万龙 赵杰伟 王志春 周舟 |
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| 作者单位： | 1. 中兵勘察设计研究院, 北京 100053; |
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| 摘 要： | 对固结系数的非线性变化进行了理论分析,推导了固结系数的非线性控制方程,指出了γ因子对固结系数非线性变化的影响。考虑到固结系数、渗透系数、压缩系数整体变化以及双层软土一维非线性固结方程求解困难,建立了差分格式的双层软土一维非线性固结差分方程,利用差分法对该方程进行了求解,为工程中复杂方程的计算提供了一种新的方法。研究表明:固结系数并不是决定双层软土非线性固结性状的唯一指标,须综合考虑各种因素的影响。
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| 关 键 词： | 双层软土 非线性 固结系数 差分法 |
| 收稿时间： | 2009-09-28 |
One-dimensional non-linear consolidation theory of double layer soft soil |
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| Institution: | 1. China Ordnance Industry Survey and Geotechnical Institute, Beijing 100053, China;2. Geo-Enviroment Monitoring Station of Hangzhou, Hangzhou 310012, China |
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| Abstract: | Through the theoretical analysis of non-linear variation of consolidation coefficient, non-linear governing equations of consolidation coefficient were deduced, and influence of γ was studied. Considering the variation of consolidation coefficient, permeability coefficient and compressibility, meanwhile, the consolidation equations were difficult to be solved, one-dimensional non-linear consolidation difference equations of double layer soft soil,which are solved by difference method, was proposed. And it was a new method for complex status function in engineering practice. The mechanical researches showed that consolidation coefficient was not unique index governing the non-linear consolidation behavior of double layer soft soil. Therefore, various factors should be considered systemacally. |
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| Keywords: | double layer soft soil non-linear consolidation coefficient difference method |
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