Study on Equivalent Rheological Damage Modelfor Jointed Mass
On the basis of the macroscopic continuum theory and the second theorem of damage thermodynamics,the evolution damage functions are proposed for rock and rock joints respectively,postulating that damage is accumulated with increase in visco-plastic strains in rock and rock joints.Here,rock damage is assumed isotropic,but for a joint damage in the normal direction is different from that in the tangential direction.Then,an equivalent rheological damage model is built in terms of effective stresses.The numerical tests show that the equivalent rheological damage model in terms of effective stresses is feasible and is able to simulate the damage evolution of jointed rock mass.
Jointed rock mass rheology equivalent damage effective stress
Yaoying Huang Hong Zheng
School of Hydraulic and Environmental Engineering,Chinese Three Gorges University,Yichang 443002,Chi Key Laboratory of Geomechanics and Geotechnical and Engineering,Institute of Rock and Soil Mechanics
国际会议
北京
英文
327-331
2012-10-15（万方平台首次上网日期，不代表论文的发表时间）