裂隙岩体弹塑性损伤本构模型及其加锚计算(英文)

Elastoplastic damage constitutive model for jointed rockmass and its rock bolt computation *

根据裂隙岩体的弹塑性损伤变形机制，建立了断续多裂隙岩体在初始损伤、损伤演化和塑性损伤变形状态下的三维弹塑性损伤本构关系。在此基础上，建立了空间损伤岩锚柱单元模型，模拟锚杆对断续裂隙岩体的支护效果。最后，将建立的模型应用于三峡船闸高边坡，进行了边坡加锚裂隙岩体三维非线性有限元计算，获得了较为满意的结果。

According to elastoplastic damage deformation mechanism of jointed rockmass, a 3 D elastoplastic damage constitutive model for intermittent multi joints rockmass under initial damage, damage evolution and plastic damage deformation state is established in this paper. On the basis of this constitutive model, a cylindrical damage rock bolt element model (CDRB element model) is proposed to simulate the reinforcing effect of bolts in intermittent jointed rockmass. Finally, the proposed models have been applied to the stability analysis of the high slope of Three Gorges Shiplock under construction. The 3 D non linear FEM analysis of the bolted slope rockmass gives satisfactory results.