考虑剪切变形历史影响的节理峰值剪切强度准则

doi:10.6040/j.issn.1672-3961.0.2015.072

Abstract

Abstract: Artificial joints were used for direct shear tests under four levels of normal stresses, i. e. 0.5,1.0, 2.0 and 3.0 MPa,to simulate the effect of shear deformation history. The results showed that peak strength decreased with the shear times increasing. In addition, the discrepancy between the result of direct shear test for the first time and for the second time was the most obvious. With shear times increasing, there were fewer changes of peak shear strength in following tests. Analyzing dilatancy characteristics and changes of peak shear strength under normal stresses, the peak shear strength criterion considering the effect of shear deformation history was established.

Key words: shear history, rock joint, peak shear strength

CLC Number:

TU43

ZHANG Jianming, LIU Quansheng, TANG Zhicheng, ZHAN Ting, JIANG Yalong. New peak shear strength criterion with inclusion of shear action history[J].JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2015, 45(5): 77-81.

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New peak shear strength criterion with inclusion of shear action history

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