西南交通大学学报 2007, 42(6) 720-725 DOI:     ISSN: 0258-2724 CN: 51-1277/U

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本文关键词相关文章
岩石蠕变
水压
Burgers模型
本构方程
黏滞系数
本文作者相关文章
吴秀仪
刘长武
沈荣喜
杨旭
PubMed
Article by WU Xiuyi
Article by LIU Changwu
Article by SHEN Rongxi
Article by YANG Xu

水压与外力共同作用下的岩石蠕变模型

吴秀仪, 刘长武, 沈荣喜, 杨旭

四川大学水利水电学院, 四川, 成都, 610065

摘要

为了更好地描述岩石蠕变的全过程以及在水压与外力共同作用下的岩石蠕变规律,对描述岩石蠕变特性的Burgers模型进行了修正.把非线形黏滞阻尼器与塑性元件并联,然后串联在Burgers模型中,从而得到修正的Burgers模型.通过分析和推导,建立了水压与外力共同作用下岩石蠕变全过程的本构方程,并给出了求解模型参数的方法.

关键词 岩石蠕变   水压   Burgers模型   本构方程   黏滞系数  

Creep Model of Rock Subjected to Water Pressure and External Force

WU Xiuyi, LIU Changwu, SHEN Rongxi, YANG Xu

College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, China

Abstract:

In order to describe the whole process of rock creep and the creep feature of rock subjected to water pressure and external force more exactly,the Burgers model describing the creep feature of rock was modified.A modified Burgers model was set up through paralleling a non-linear adhesion damper and a plastic element,and then connecting in series them and the Burgers model.By analyzing and deducing,a constitutive equation to describe the whole process of rock creep subjected to water pressure and external force was established,and the method to determine parameters in the constitutive equation was given.

Keywords: rock creep   water pressure   Burgers model   constitutive equation   adhesion coefficient  
收稿日期 2007-04-10 修回日期  网络版发布日期  
DOI:
基金项目:

国家自然科学基金资助项目(50574064)

通讯作者:
作者简介: 吴秀仪(1979- ),男,博士研究生.研究方向为岩土工程与地下工程.电话:028-85463919,E-mail:wmxiuyi227@sohu.com

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