群锚加固岩质边坡锚索受力特点数值试验

Numerical Experiment of Stress Characteristics on Reinforcing Rock Slope with Group Anchorage Cable

为研究预应力群锚对岩质边坡的加固效应以及锚索在节理裂隙面上的受力特点,针对岩质高边坡实际工程,作为室内模型试验的补充,采用有限差分软件对双滑面楔形体节理裂隙岩质边坡室内模型试验模型进行了边开挖边锚固施工过程模拟,结合室内模型试验结果,分析了预应力施工过程中锚索预应力变化规律和锚索体轴力分布特点及传力机制,根据位移云图随工况的发展过程定量分析了群锚加固效应。

As researching the reinforcement effect of rock slope with group anchorage cable and the stress characteristics of pre-stressed anchorage cable in the fractured surface, the rock slope calculated model of wedge block within the double-slide face is established by using the finite difference software according to the actual slope project. In this paper, the decay rule of the cable pre-stress and the distribution of axial force and the force-transferring mechanism of anchorage cable are analyzed during the process of simulation. And then, based on the displacement contour of the calculated results, the quantitative analysis for the reinforcement effect of the rock slope with group pre-stressed anchorage cable is discovered.