端部效应对岩石真三轴压缩强度的影响

doi:10.13722/j.cnki.jrme.2015.0054

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Abstract Many true triaxial strength criteria for rock have been proposed；however，the true triaxial test data for evaluating the criteria are rare and also needed to verify. Strengths and deformation of Yamaguchi marble and Orikabe monzonite tested by Kiyoo Mogi exhibit strange phenomena：strength does not increase after an increase of 3 while 2 keeps a constant；2 has larger influence than 3 on the bearing capacity in ductile deformation. The abnormal strength property of Laxiwa granite is also discussed. A reasonable conclusion is that specimens compressed under high 3 are endured large axial deformation which may induce significant end effects from platens in 2-direction. The genuine effect of 2 on strength does not enhance with 3 after friction correction.

Key words： rock mechanics true triaxial strength test data strength criterion friction effect

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YOU Mingqing. End effects on strengths of rocks under true triaxial compression[J]. , 2016, 35(S1): 2603-2607.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2015.0054 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/IS1/2603

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