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基于考虑时间效应UH模型的一维固结分析

胡晶 姚仰平

胡晶, 姚仰平. 基于考虑时间效应UH模型的一维固结分析[J]. 北京航空航天大学学报, 2015, 41(8): 1492-1498. doi: 10.13700/j.bh.1001-5965.2014.0583
引用本文: 胡晶, 姚仰平. 基于考虑时间效应UH模型的一维固结分析[J]. 北京航空航天大学学报, 2015, 41(8): 1492-1498. doi: 10.13700/j.bh.1001-5965.2014.0583
HU Jing, YAO Yangping. 1D-consolidation analysis based on UH model considering time effect[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(8): 1492-1498. doi: 10.13700/j.bh.1001-5965.2014.0583(in Chinese)
Citation: HU Jing, YAO Yangping. 1D-consolidation analysis based on UH model considering time effect[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(8): 1492-1498. doi: 10.13700/j.bh.1001-5965.2014.0583(in Chinese)

基于考虑时间效应UH模型的一维固结分析

doi: 10.13700/j.bh.1001-5965.2014.0583
基金项目: 国家"973"计划(2014CB047006);国家自然科学基金(11272031,51179003);北京市自然科学基金(8132042)
详细信息
    作者简介:

    胡晶(1989-),男,江苏东海人,博士研究生,jinghu@buaa.edu.cn

    通讯作者:

    姚仰平(1960-),男,陕西蓝田人,教授,ypyao@buaa.edu.cn,主要研究方向为岩土工程.

  • 中图分类号: TU447

1D-consolidation analysis based on UH model considering time effect

  • 摘要: 结合考虑时间效应的统一硬化(UH)模型得到一维固结下土的一维应力-应变关系,以此建立一维固结控制微分方程,可以统一考虑土的主、次固结变形.采用差分方法对单面排水固结问题进行了分析,加载初期不透水层处存在有效应力减小的松弛现象,推导了不透水层处有效应力随时间减小的公式并进行分析.随后,采用数值方法分析了次固结系数、超固结度、压缩回弹系数等因素对固结的影响规律,分析结果也验证了所得公式的结论.此外,通过室内试验对控制方程预测规律进行了验证分析.当主固结基本完成后,变形主要由次固结产生,基于这个条件推导了平均固结度与时间的关系,该公式可以用于计算固结基本完成需要的时间.

     

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出版历程
  • 收稿日期:  2014-09-24
  • 网络出版日期:  2015-08-20

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