STUDY OF STATISTICAL DAMAGE CONSTITUTIVE MODEL FOR ROCK CONSIDERING PORE WATER PRESSURE
WANG Wei1，2，TIAN Zhenyuan1，2，ZHU Qizhi1，2，LI Xuehao3，XU Weiya1，2
(1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering，Hohai University，Nanjing，Jiangsu 210098，China；2. Institute of Geotechnical Engineering，Hohai University，Nanjing，Jiangsu 210098，China；3. Shanxi Provincial Communications Planning Surveying and Design Institute，Taiyuan，Shanxi 030012，China)
On the basis of damage theory，combing effective stress principle with Lemaitre¢s strain equivalence assumptions，an expression of effective stress under stress and seepage coupling conditionwas established. Assuming that the micro-unit strength obeys Weibull distribution，a statistical damage constitutive model considering pore water pressure was established. Comparing the test datawith the results obtained from the statistical model，the new model can fit the test data well，showing the validity and feasibility of the new model. Then the relationship between pore water pressure and model parameters，damage characteristics were discussed，and it will provide good reference for safety analysis ofrock engineering under stress and seepage coupling condition.
王 伟1，2，田振元1，2，朱其志1，2，李雪浩3，徐卫亚1，2. 考虑孔隙水压力的岩石统计损伤本构模型研究[J]. 岩石力学与工程学报, 2015, 34(S2): 3676-3682.
WANG Wei1，2，TIAN Zhenyuan1，2，ZHU Qizhi1，2，LI Xuehao3，XU Weiya1，2. STUDY OF STATISTICAL DAMAGE CONSTITUTIVE MODEL FOR ROCK CONSIDERING PORE WATER PRESSURE. , 2015, 34(S2): 3676-3682.
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2015, Vol. 34 
