复杂应力状态下完整岩体卸荷破坏的损伤力学分析  

Damage Mechanical Analysis of Unloading Failure of Intact Rock Mass under Complex Stress State

作　　者：吴刚[1] 孙钧[2] 吴中如[1] 

机构地区：[1]河海大学水利水电工程学院 [2]同济大学地下建筑与工程系

出　　处：《河海大学学报（自然科学版）》1997年第3期44-49,共6页Journal of Hohai University(Natural Sciences)

基　　金：国家自然科学基金

摘　　要：在损伤力学理论的基础上建立了岩体卸荷破坏的损伤本构模型，通过与红砂岩的四种卸荷破坏试验结果的对比，表明该模型适用于脆弹性岩体的卸荷破坏．The failure of rock mass due to excavation unloading is a common phenomenon. However,classical strength theories can hardly reflect unloading failure of rock mass.Based on the damage mechanical theory,a damage constitutive equation of unloading failure of rock mass is established in the paper.A comparison of experimental test results shows that the model is in very good agreement with experiments.

关 键 词：复杂应力状态 完整岩体 卸荷破坏 力学性质 

分 类 号：TU452[建筑科学—岩土工程]