摘要:研究目的：随着西部地区高速铁路的快速发展，由于受到地形和线型的制约，不可避免地遇到大量的边 坡锚索加固工程。由于锚索穿越边坡滑移面时锚固段的受力情况较为复杂，还需进一步完善。本文基于 Patemk双参数地基理论，考虑岩土体之间的相互剪切作用，建立横向荷载作用下锚固段的力学模型，并以某 黄土边坡锚索加固工程为算例，分析不同参数下锚固段的变形规律和受力特征。 研究结论:( 1)给出了锚索锚固段穿越滑移面时锚索变形、弯矩、剪力及岩土体反力计算公式，给出了土 体松动区范围的计算方法;（2)分析表明，剪切荷载和抗弯刚度对锚索的变形和受力影响较大，锚索变形和受 力主要集中在滑移面附近;（3)在抗弯刚度达到一定值后，剪切位移、土体反力分别与抗弯刚度呈线性减小， 锚索的剪切位移随剪切荷载呈线性增加；（4)该研究结果可为高速铁路边坡锚索加固工程的设计和施工提供 借鉴。

Abstract : Research purposes ： With the rapid development of high - speed railway in the western region，it is inevitable to encounter a lot of slope anchor reinforcement engineering，which is due to the terrain and linear constraints. Because of the complex condition of the anchorage segment when the anchor cable passes through the slip surface of the slope，it needs to be further improved. Based on the double - parameter foundation model，the shear interaction between soil and rock was taken into account. A mechanical model of the anchorage segment under lateral load was established. Taking the reinforcement engineering of a loess slope as an example， the deformation law and stress characteristics of the Anchorage segment under different parameters were analysed. Research conclusions:(1) The calculating formulas were given，which was about the anchor cable deformation when The anchorage segment passes through the slip surface，bending moment，shear and the reaction of rock and soil mass. And computing method of loose zone of soil was also presented. (2 ) The results show that the shear and flexural stiffness have great influence on the deformation and stress of the anchor cable， which are mainly concentrated near the slip surface. (3) When the bending stiffness reaches a certain value，the shear displacement and the soil reaction decrease linearly with the bending stiffness. The shear displacement increases linearly with shear load. (4) The research results can provide reference for the design and construction of slope anchor cable reinforcement engineering on high - speed railway.