Pre-stressed cables were found to be a viable approach of reinforcing anti-dip bedding rock slopes (ABRSs) in the Wenchuan earthquake. However, the dynamic response law and failure mechanism of reinforced ABRSs are still unclear, which was studied using the Universal Distinct Element Code (UDEC) method in this work. A numerical model of a typical ABRS was first built up using UDEC. Then, a comparison of the dynamic response of reinforced and unreinforced ABRSs was carried out. Moreover, a systematic parameter study was performed to investigate the effect of cable inclination, cable spacing, and pre-stressed force on the reinforcement effect. The results show that pre-stressed cables can be very effective in controlling the deformation and improving the dynamic stability of ABRSs subjected to dynamic loading. For both unreinforced and reinforced ABRSs, a remarkable acceleration amplification occurs on the surface of the slope from half of the slope height upwards. A small cable inclination and a high pre-stressed force are recommended in the seismic reinforcement design of ABRSs. The results of this work could guide the design of reinforcement of ABRS in earthquake-prone areas.

发现预应力索是汶川地震中加固抗倾层岩质边坡（ABRSs）的一种可行方法。然而，增强型ABRS的动力响应规律和失效机理尚不清楚，本文采用通用独特元代码（UDEC）方法对其进行了研究。首先使用 UDEC 建立了典型 ABRS 的数值模型。然后，对增强型和未增强型 ABRS 的动力响应进行了比较。此外，还进行了系统的参数研究，以研究缆索倾斜度、缆索间距和预应力对加固效果的影响。结果表明，预应力索可以非常有效地控制变形和提高 ABRS 承受动态载荷的动态稳定性。对于未加筋和加筋的 ABRS，从坡高的一半向上，坡面发生了显着的加速度放大。ABRS 抗震加固设计中推荐使用小斜度和高预应力。这项工作的结果可以指导地震多发地区 ABRS 的加固设计。