一种锚杆计算模型及其在岩坡锚杆支护中的应用

Effective calculation method of bolts and its application in rock slopes anchored by bolts

针对目前岩土工程中锚杆数值模型存在的局限性,探索了适合于强度折减有限元法计算和锚固优化新的锚杆计算模型,考虑了锚杆沿壁摩阻力作用,研制了相应程序,并应用于岩石边坡锚杆支护方案计算中。应用表明,该模型方便可行,提高了加锚岩体数值模拟的适用性。

Due to the limitation of the numerical models of rock bolts by finite element method （FEM） in geotechnical engineering, the bolt model for the FEM of strength reduction method and the optimization of anchor parameters was suggested. The model could consider the friction along the bolts. Then the corresponding program for the bolt model was developed. The model was used in the calculation of anchor projects in rock slopes. It was indicated that the model was convenient and feasible, and the applicabilitv of the numerical simulation for the reinforced rock mass was enhanced.