摘要
岩体中结构面的蠕变特性一直是岩体力学研究中的一个重点。文章在规则齿形结构面剪切蠕变试验的基础上,分析了剪切蠕变随不同的爬坡角、正应力和剪应力的影响,拟合了剪切蠕变曲线,并将拟合的方程与Burgers模型的本构方程进行了比较分析,讨论了Burgers模型中剪切模量、粘滞系数的变化规律及其影响因素,取得了较为理想的结论,为结构面剪切蠕变本构方程的建立提出了较为合理简便的方法。
Creep features of rock mass discontinuity are important objects in the field of rock mechanics. Based on a series of shear creep tests of discontinuous plane with regular dentation, the relationship between shear creep and different normal stress, shear stress, and slope ratio is obtained. By fitting the creep curves, the parameters of the fitted formula are compared to that of the constitutive equation of Burgers Model, and the changing rules of shear modulus and coefficient of viscosity as well as their influential factors are discussed. Then a rational and convenient method is acquired to establish a shear creep constitutive equation of discontinuous plane with regular dentation.
出处
《地下空间与工程学报》
CSCD
2006年第6期907-911,共5页
Chinese Journal of Underground Space and Engineering
基金
上海市重点学科资助课题
关键词
结构面
爬坡角
蠕变特性
本构关系
discontinuous plane
slope ratio
creep features
constitutive equation
