岩体裂隙对锚杆荷载传递机理的影响模拟研究

Study on Numerical Simulation of Effect of Rock Mass Fracture on Load Transfer Mechanism of Rockbolt

为了研究岩体裂隙对锚杆荷载传递机理的影响,采用ANSYS有限元分析软件建立了含裂隙锚固体有限元模型,通过计算分析了锚固体裂隙开度、裂隙长度和裂隙位置对锚杆应力传递机理的影响。结果显示:在裂隙位置,锚杆轴向应力和剪应力均会产生增大的现象,剪应力产生一个极小值τa和一个极大值τb,而轴向应力会产生一个极大值σ0。

In order to study the effect of rock mass fracture on load transfer mechanism of rockbolt,building up the anchorage body by using procedure software ANSYS, according to analysis and exploration effect of fracture aperture, crack length, fracture locations on load transfer mechanism of rockbolt. The results showed that: in the fractured position,shear stress and axial stress of the rockbolt will be increased, shear stress produces a maximum τband a minimum value τa,and axial stress produces a maximum σ0.