STUDY OF ROCK DAMAGE CONSTITUTIVE MODEL AND DISCUSSION OF ITS PARAMETERS BASED ON HOEK-BROWN CRITERION
SHI Chong 1，2，JIANG Xinxing1，2，ZHU Zhende1，2，HAO Zhenqun1，2
(1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering，Hohai University，Nanjing，Jiangsu 210098，China；2. Research Institute of Geotechnical Engineering，Hohai University，Nanjing，Jiangsu 210098，China)
Abstract：Based on Hoek-Brown criterion and hypothesis of rock particles obeying Weibull random distribution，the damage parameter is modified reasonably considering the characteristic of rock post-peak softening. The three-dimensional damage constitutive model reflecting the whole process of rock fracture is established；and the test is conducted to verify the validity of model. The test results show that the model results are in good agreement with test results. On this basis，the influences of Weibull distribution parameters and Hoek-Brown criterion parameters on the rock damage constitutive model are discussed；and it will provide good reference to the engineering applications.
石 崇1，2，蒋新兴1，2，朱珍德1，2，郝振群1，2. 基于Hoek-Brown准则的岩石损伤本构模型研究及其参数探讨[J]. 岩石力学与工程学报, 2011, 30(S1): 2647-2652.
SHI Chong 1，2，JIANG Xinxing1，2，ZHU Zhende1，2，HAO Zhenqun1，2. STUDY OF ROCK DAMAGE CONSTITUTIVE MODEL AND DISCUSSION OF ITS PARAMETERS BASED ON HOEK-BROWN CRITERION. , 2011, 30(S1): 2647-2652.
徐卫亚，韦立德. 岩石损伤统计本构模型的研究[J]. 岩石力学与工程学报，2002，21(6)：787-791.(XU Weiya，WEI Lide. Study on statistical damage constitutive model of rock[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(6)：787-791.(in Chinese))
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2011, Vol. 30 
