力学与实践 ›› 2016, Vol. 38 ›› Issue (5): 544-549.DOI: 10.6052/1000-0879-16-095

• 应用研究 • 上一篇    下一篇

结构与土接触面的弹黏塑性本构模型

冯胜洋1, 魏丽敏2, 蒋复量1, 雷林1, 陈祉1   

  1. 1. 南华大学环境保护与安全工程学院, 湖南衡阳 421001;
    2. 中南大学土木工程学院, 长沙 410075
  • 收稿日期:2016-03-23 修回日期:2016-05-02 出版日期:2016-10-15 发布日期:2016-10-17
  • 通讯作者: 冯胜洋,博士,讲师,从事岩土工程教学与研究工作.E-mail:fengshengyang13@163.com
  • 基金资助:

    湖南省教育厅科学研究项目(15C1191)、南华大学博士科研启动基金项目(2014XQD11)和衡阳市科学技术发展计划项目(2015KS06)资助.

ELASTIC-VISCO-PLASTIC CONSTITUTIVE MODEL FOR SOIL-STRUCTURE INTERFACE

FENG Shengyang1, WEI Limin2, JIANG Fuliang1, LEI Lin1, CHEN Zhi1   

  1. 1. School of Environmental Protection and Safety Engineering, University of South China, Hengyang 421001, Hunan, China;
    2. School of Civil Engineering, Central South University, Changsha 410075, China
  • Received:2016-03-23 Revised:2016-05-02 Online:2016-10-15 Published:2016-10-17

摘要:

基于Goodman接触面单元,在Clough——Duncan双曲线关系式的基础上改进了三元件宾厄姆体,建立了结构与土接触面的弹黏塑本构模型,使用ABAQUS的FRIC子程序对该模型进行了二次开发.通过改装的应力控制式结构——土接触面剪切试验仪进行了接触面长期剪切试验,验证了该接触面本构模型.研究结果表明:结构与土接触面的弹黏塑本构模型能较好地模拟接触面的力学特性和时间效应;正应力对结构与土接触面的力学行为影响较大,正应力越大,接触面的时间效应越显著.

关键词:

接触面|弹黏塑本构模型|接触单元|二次开发

Abstract:

Based on the Goodman contact element, we improve the Bingham model on the basis of the Clough-Duncan hyperbolic equation to establish an elastic-visco-plastic constitutive model for soil-structure interface. This soil-structure interface model is developed by the FRIC subroutine of ABAQUS. A series of long-term interface shear tests are performed to verify the above model by using the stress controlled soilstructure interface shearing test apparatus. The results show that the established model is able to effectively simulate the mechanical behavior and time effect of soil-structure interface; the normal stress has greater effect on the mechanical behavior of the soil-structure interface, and the larger the normal stress, the more obvious time effect of the interface is.

Key words:

interface|elastic-visco-plastic constitutive model|interface element|secondary development

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