西南交通大学学报2013，Vol.48Issue(4)：616-624,9.DOI:10.3969/j.issn.0258-2724.2013.04.005
岩石广义非线性统一强度理论
Generalized Nonlinear Unified Strength Theory of Rock
昝月稳 1俞茂宏2
作者信息
- 1. 西南交通大学地球科学与环境工程学院,四川成都610031
- 2. 西安交通大学土木工程系,陕西西安710049
- 折叠
摘要
Abstract
The generalized Hoek-Brown strength criterion is used widely in rock engineering.The effect of the intermediate principal stress,however,is not taken into account in the Hoek-Brown criterion.The twin-shear models and the generalized Hoek-Brown strength criterion were generalized and combined into a generalized nonlinear unified strength theory.The serial limit surfaces of the generalized nonlinear unified strength theory cover the whole convex region,and encompasses the generalized Hoek-Brown strength criterion and the generalized nonlinear twin shear strength criterion as two special cases.In the stress space,the inner bound of limit surface of the generalized nonlinear unified strength theory is the generalized Hoek-Brown strength criterion,and the outer bound is the generalized twin shear strength criterion.A series of new limit surfaces cover the all region between these two bounds.As a result,the unified yield criterion,the unified strength theory and the rock nonlinear unified strength theory can be linked with the generalized nonlinear unified strength theory.关键词
岩石强度理论/双剪模型/统一强度理论/广义Hoek-Brown强度准则Key words
rock strength theory/ twin shear model/ unified strength theory/ generalized Hoek-Brown strength criterion分类
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昝月稳,俞茂宏..岩石广义非线性统一强度理论[J].西南交通大学学报,2013,48(4):616-624,9.
