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浙江大学学报(工学版)
J4  2012, Vol. 46 Issue (1): 27-32    DOI: 10.3785/j.issn.1008-973X.2012.01.05
土木工程     
变荷载下基于指数渗流一维固结半解析解
李传勋1,2,胡安峰1,谢康和1,张秀丽2
1. 浙江大学 软弱土与环境土工教育部重点实验室,浙江 杭州 310027；2. 江苏大学 土木工程系,江苏 镇江 212013
Semi-analytical solution of one-dimensional consolidation with
exponential flow under time-depending loading
LI Chuan-xun1,2,HU An-feng1,XIE Kang-he1,ZHANG Xiu-li2
1. Key Laboratory of Soft Soils and Geoenviromental Engineering, Ministry of Education, Zhejiang University,
Hangzhou 310027,  China; 2. Department of Civil Engineering, Jiangsu University, Zhenjiang 212013,  China
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摘要：

考虑实际工程中的变荷载,对基于指数形式渗流定律的一维固结问题进行计算分析.通过采用数值离散与成层地基线性固结解析解相结合的半解析方法得到一系列的固结曲线.分析仅在某一参数发生变化时的一维固结性状.结果表明：固结速率在固结初期随渗流指数的增加而增加,在固结后期随渗流指数的增加而减少；当指数<1时,作用在地基上的荷载越大则固结速率越小；当指数>1时,荷载越大固结速率越大；无论渗流指数为何值,在相同的固结时间下,地基平均固结度都会随着地基土层厚度的增加而减小；固结速率随着加荷速率的增加而变快.
Abstract:

 One-dimensional consolidation with exponential flow was analyzed considering time-dependent loading in  actual engineering. A series of consolidation curves were obtained by means of semianalytical method combining numerical discretization with analytical solutions for consolidation of layered soil. Consolidation behavior was analyzed under change of a certain parameter. Results show that consolidation rate increases with increasing the exponent during early stage of consolidation and decreases with increasing the exponent during later stage of consolidation. If the exponent is less than 1, the larger the loading is, the slower consolidation rate is; if the exponent is greater than 1, the larger the loading is, the faster consolidation rate is. Whatever the value of exponent is, the average-consolidation degree decreases with increasing thickness of soil layer at the same   consolidation time; the consolidation rate accelerates with increasing loading rate．
出版日期: 2012-02-22
:  TU 470  
基金资助:

国家自然科学基金资助项目（50878191，51109092）.
通讯作者: 胡安峰，男，副教授.     E-mail: anfenghu@zju.edu.cn
作者简介: 李传勋（1978-），男，讲师，从事软黏土力学与地基处理的研究.E-mail：lichuanxun@yeah.net
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引用本文:

李传勋,胡安峰,谢康和,张秀丽. 变荷载下基于指数渗流一维固结半解析解[J]. J4, 2012, 46(1): 27-32.

LI Chuan-xun,HU An-feng,XIE Kang-he,ZHANG Xiu-li. Semi-analytical solution of one-dimensional consolidation with
exponential flow under time-depending loading. J4, 2012, 46(1): 27-32.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2012.01.05    或    http://www.zjujournals.com/eng/CN/Y2012/V46/I1/27

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