公路边坡锚索框架梁内力计算及参数影响分析

Analysis on Internal Force Calculation and Parameter Impact of Cable Frame Beam for Road Slope

预应力锚索框架支护体系广泛应用于公路边坡工程的修复与加固中,框架梁作为该支护体系中不可缺的一部分,其内力计算和相关参数的影响研究显得尤为重要。依托预应力锚索框架加固边坡的工程案例,通过框架梁内力实测值与现今工程中较为常用的框架梁计算方法的计算结果的对比,研究了不同计算方法的准确性和适用性。在对比分析结果的基础上,重点探讨了梁截面尺寸、悬臂端长度及地基反力系数等因素对框架梁内力及地基反力的影响。

Prestressed anchor cable framework is a supporting system extensively used in repair and reinforcement of road slope, wherein the frame beam, as an indispensable part of the system, is paid attention to by the study of internal force calculation and parameter impact. Depending on such project case, the measured values of the internal force and the values calculated from the commonly-used method were compared, by which the accuracy and applicability of these different methods were studied. As a result, how the factors, such as the dimension of beam section, the length of cantilever end and the coefficient of subgrade reaction, impact the internal force of frame beam and the subgrade reaction, was discussed.