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力学与实践 ›› 2018, Vol. 40 ›› Issue (1): 24-29.doi: 10.6052/1000-0879-17-346

• 应用研究 • 上一篇    下一篇

考虑温度影响的软黏土流变固结模型及解析解

郭华, 刘干斌, 薛传成   

  1. 宁波大学岩土工程研究所, 浙江宁波 315211
  • 收稿日期:2017-11-11 修回日期:2017-10-12 出版日期:2018-02-15 发布日期:2018-03-26
  • 作者简介:郭华,硕士研究生,主要从事多物理场土力学、软土地基处理方面的研究工作. E-mail:573860762@qq.com
  • 基金资助:
    国家自然科学基金资助项目(51478228).

A RHEOLOGICAL CONSOLIDATION MODEL FOR SOFT CLAY WITH CONSIDERATION OF TEMPERATURE AND THE ANALYTICAL

GUO Hua, LIU Ganbin, XUE Chuancheng   

  1. Institute of Geotechnical Engineering, Ningbo University, Ningbo 315211, Zhejiang, China
  • Received:2017-11-11 Revised:2017-10-12 Online:2018-02-15 Published:2018-03-26

摘要: 基于四元件流变模型,考虑温度影响,建立了宁波软黏土流变固结模型,并利用拉普拉斯变换得到瞬时加载条件下的考虑温度 影响的饱和软黏土流变固结解析解;利用不同温度下软黏土的流变固结试验结果,拟合获得了四元件流变模型参数,进行编程得到理论值, 并与试验值进行对比. 结果表明:该模型能较好反映宁波软黏土流变固结特性,计算结果与试验结果较为吻合.温度的升高导致渗透系数增大,在相同的时间内孔压消散 越快, 固结 越快.

关键词: 四元件模型|温度|流变固结解析解

Abstract: Based on the four element rheological model, a rheological consolidation model for the Ningbo soft clay is established with consideration of the influence of temperature, and the analytical solution for the rheological consolidation of the saturated soft clay under instantaneous loading conditions is obtained by Laplace transform. Based on the rheological consolidation test results of soft clay in different temperatures, the parameters in the rheological Ningbo soft clay four element model are determined. And the theoretical values are compared with the experimental values. It is shown thatthe model can well reflect the rheological consolidation characteristics of the Ningbo soft clay,and the calculated results are in good agreement with the experimental results. The increase of the temperature leads to an increase of the permeability coefficient, and the pore pressure dissipates at the same time, leading to an accelerated consolidation.

Key words: four component model|temperature|analytical solution of rheological consolidation

中图分类号: 

  • TU4