The general analytical solutions for one-dimensional large deformation consolidation of soft soils with time-dependent loading

被引：0

作者：

Ge S. ^{[1
]}

Jiang W. ^{[2
]}

Zheng L. ^{[1
,3
]}

Zhang X. ^{[1
]}

Feng G. ^{[1
]}

Nie H. ^{[1
]}

机构：

[1] Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Zhejiang, Hangzhou

[2] Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Hubei, Wuhan

[3] Ningbo Research Institute, Zhejiang University, Zhejiang, Ningbo

来源：

Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2022年 / 41卷

基金：

中国国家自然科学基金; 浙江省自然科学基金;

关键词：

analytical solution; consolidation behavior; foundation engineering; large deformation consolidation; loading pattern; soft soils;

D O I：

10.13722/j.cnki.jrme.2021.1320

中图分类号：

学科分类号：

摘要：

For the problem of one-dimensional large deformation consolidation of soft soils with time-dependent loading，based on the existing governing equation of consolidation，the general analytical solutions for one-dimensional large deformation consolidation are obtained by using the method of variable substitution and separation variable. The method used in solving the general analytical solutions is simple，and the solutions have a clear form，which is convenient for calculations. Referring to the general analytical solutions，the expressions for analytical solutions of consolidation under several common loading patterns are given. By analyzing the specific analytical solution presented in the paper and comparing the proposed analytical solution with finite difference solution，the correctness of the proposed analytical solutions is verified. Based on the solutions proposed，the consolidation behaviors are analyzed. The results show that under two-stage instantaneous loading pattern，the consolidation rate slows down and the maximum value of excess pore water pressure decreases with the extension of first-stage loading time. Under two-stage linear loading pattern，the effect of increasing the loading rate on the consolidation rate is small when the loading rate increases to a certain extent. Under cyclic loading pattern，with the increase of cyclic loading time，the variation range of the consolidation degree curves becomes larger after it tends to be stable. Under the time-dependent loading，the consolidation rate defined by settlement increases with the increase in the final loading，while the consolidation rate defined by pore water pressure decreases. The analysis results can provide theoretical guidance for the actual loading construction process of soft soils. © 2022 Academia Sinica. All rights reserved.

引用

页码：3464 / 3475

页数：11

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