Semi-analytical solutions for one-dimensional nonlinear large strain consolidation of structured soft clay

HU An-feng; ZHOU Yu-shan; CHEN Yuan; XIA Chang-qing; XIE Kang-he

doi:10.16285/j.rsm.2018.2047

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Semi-analytical solutions for one-dimensional nonlinear large strain consolidation of structured soft clay

更新时间：2026-06-25

- Semi-analytical solutions for one-dimensional nonlinear large strain consolidation of structured soft clay
- Vol. 41, Issue 8, Pages: 2583-2591(2020)
- 作者机构：
  
  1. 浙江大学滨海和城市岩土工程研究中心,浙江,杭州,310058
  2. 浙江大学软弱土与环境土工教育部重点实验室,浙江,杭州,310058
  3. 浙江大学建筑设计研究院有限公司,浙江,杭州,310028
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2018.2047
  CLC： TU41
- Online First：17 October 2020，
  
  Published：2020
- 稿件说明：
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HU An-feng, ZHOU Yu-shan, CHEN Yuan, et al. Semi-analytical solutions for one-dimensional nonlinear large strain consolidation of structured soft clay[J]. 2020, 41(8): 2583-2591.
DOI：

HU An-feng, ZHOU Yu-shan, CHEN Yuan, et al. Semi-analytical solutions for one-dimensional nonlinear large strain consolidation of structured soft clay[J]. 2020, 41(8): 2583-2591. DOI： 10.16285/j.rsm.2018.2047.

摘要

以结构性较强的天然饱和软黏土为研究对象，考虑了沉积作用对其自重应力的影响，以及压缩性和渗透性的非线性变化，推导了任意加载条件下结构性土一维大应变固结控制方程，并采用半解析的方法对方程进行求解计算。再将其退化为无结构性的饱和软黏土固结解，与已有的大应变固结解进行了对比，验证了该解的正确性。最后将该半解析解计算结果与小应变固结理论解、不考虑结构性的固结理论解计算结果进行对比分析。结果表明：大应变固结理论的沉降计算值大于小应变固结理论的计算值，且二者的差值随着荷载的增加而增加；当考虑土体的结构性时，地表沉降计算值小于不考虑土体结构性的沉降计算值。

Abstract

In the analysis of consolidation of naturally saturated soft clay with strong structure

the influence of sedimentation on self-weight stress

the nonlinear variation of compressibility and permeability were considered. The one-dimensional large strain consolidation equations under arbitrary loading conditions were derived and solved by a semi-analytical method. Then the solutions were degraded into solutions of a non-structured saturated soft clay consolidation theory. By comparing the degraded semi-analytical solutions with the existing large strain consolidation solutions

the solutions of the one-dimensional large strain consolidation equations were proved to be right. At last

the consolidation behaviours of semi-analytical solutions were compared with the theoretical solutions of small strain consolidation theory and the the theoretical solution of the consolidation theory without considering the structure. The comparison results show that the settlement at any time of large strain consolidation theory is greater than that of the small strain consolidation theory

and the difference between the two increases with the increase of the load. When considering the structure of the soft soil

the settlement of large strain consolidation is smaller than the calculated value without considering the soil structure.

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