山区公路高边坡失稳与防护分析

预应力锚索框架梁已经作为重要的手段应用到高边坡支护工程中，但是该技术的理论研究要落后于实践的应用，本文以某山区高边坡为研究对象，基于强度折减法理论，应用有限差分软件FLAC3D，建立高边坡预应力锚索框架梁模型，通过改变预应力锚索（锚索长度，锚索直径和锚固角度）和框架梁的参数（锚索预应力大小和梁间距）开展了不同工况的高边坡稳定分析，比较了不同条件的框架梁水平位移值，得出各工况参数与支护结构变形之间的关系，提出高边坡预应力锚索框架梁支护优化方案，对高边坡支护设计有一定的指导意义。

Instability Analysis of High Slope of Highway in Mountain Area and its Treatment

Though prestressed anchor-frame beam method has been applied in high slope support engineering as an important approach, the theoretical research could not sufficiently fulfill its application. Based on the strength reduction theory, the paper investigated a high slop of mountain area, and the model of prestressed anchor-frame beam has been established in FLAC3D. The stability of high slop in different working condition is analyzed by altering the parameters of prestressed anchor cable(length, diameter and anchorage angle) and frame beam(prestress and beam spacing). The relation between the deformation of supporting structure and the parameters of different condition is obtained by comparing the consequent horizontal displacement of the frame beam, and the optimization scheme is also proposed, which is of certain guiding significance for the design of high slop support.