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Study on Equivalent Rheological Damage Modelfor Jointed Mass

机译:节理质量的等效流变损伤模型研究

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摘要

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.
机译:在宏观连续理论和损伤热力学第二定理的基础上,分别提出了岩石和节理的演化损伤函数,并假设随着岩石和节理中粘塑性应变的增加累积损伤。假定损伤是各向同性的,但对于法向方向的切向损伤与切向方向的损伤是不同的。然后,根据有效应力建立了等效的流变损伤模型。有效应力的计算是可行的,并且能够模拟节理岩体的损伤演化。

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