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对于锚杆支护结构的稳定性计算,在考虑预应力对稳定性的影响时,尚没有有效的方法,尤其是采用圆弧滑移面计算支护结构的稳定性时,都是将锚杆当作土钉,采用规范中计算土钉墙的方法计算安全系数。将预应力作为集中力考虑,给出计算预应力锚杆支护结构安全系数的简化方法,并通过有限元分析软件验证该算法的可行性。
There is no effective way to calculate the stability of anchor supporting structure when considering the influence of prestressing on stability. Especially when the stability of supporting structure is calculated by using arc sliding surface, As soil nails, using the method of calculating soil nailing wall in the calculation of safety factor. Taking prestressing as concentration factor, a simplified method to calculate the safety factor of prestressed anchor supporting structure is given. The feasibility of this algorithm is verified by finite element analysis software.