Macro-constitutive model for brittle-plastic rock and its applications

被引：0
|
作者：
Lee, CF [1 ]
Zheng, H [1 ]
Ge, XR [1 ]
机构：
[1] Univ Hong Kong, Dept Civil & Struct Engn, Hong Kong, Hong Kong
来源：
DEFORMATION AND PROGRESSIVE FAILURE IN GEOMECHANICS - IS-NAGOYA'97 | 1997年
关键词：
brittle-plastic rock; macro-constitutive model; stress-drop; stability;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Mathematical proof is provided for the existence of a limit to the softening rate of strain-softening material in the classical plasticity theory. Based upon Ilyushin's postulate and the plastic potential theory, a macro-constitutive model for brittle-plastic rock is established to determine the stress drop from the peak strength surface to the residual strength one. The paper solves a deep seated circular tunnel problem with an analytical solution.
引用
收藏
页码：359 / 364
页数：4
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