›› 2009, Vol. 30 ›› Issue (2): 328-332.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Reliability analysis of strength for joint in rock mass

LIU Dong-sheng1, ZHANG Lang 1, 2, SONG Qiang-hui1, YANG Kai1   

  1. 1. Department of Architecture & Civil Engineering, Logistical Engineering University, Chongqing 400041, China; 2. Institute of Aerospace and Material Engineering, National University of Defense Technology, Changsha 410073, China
  • Received:2007-05-29 Online:2009-02-10 Published:2011-01-27

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Abstract:

Based on the Mohr-Coulomb strength criterion of joint in rock mass and reliability theory, the strength parameters of rock and joint as well as the obliquity of joint are taken as random variables. Some influences caused by these random variables on the failure probability of joint are analyzed. The regularity of failure probability of joint with the change of the obliquity is discussed. A formula for calculating the failure probability of rock and joint is brought forward. Some main factors which influence the failure probability of joint are found out. Results show that the reliability analysis method of joint in rock mass is more reasonable than that of traditional method.

Key words: Mohr-Coulomb criterion, joint, strength parameters, random variable, reliability

CLC Number: 

  • TU 452
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