不同工况下高速公路高边坡锚索加固优化方法  

Optimization Method for Anchor Cable Reinforcement of Expressway High Slopes under Different Working Conditions

作　　者：郗秀丽 XI Xiuli

机构地区：[1]邯郸市交通运输局公路工程二处,河北邯郸056002

出　　处：《重庆建筑》2025年第3期73-77,共5页Chongqing Architecture

摘　　要：针对不同工况下高速公路高边坡锚索加固问题,提出不同工况下高速公路高边坡锚索加固优化方法。主要使用FLAC软件,以模拟分析的方式,判断高速公路高边坡在降雨工况、地震工况中的失稳状态与位置,结合所掌握的失稳信息,以锚索加固参数优化的方式,从锚索倾斜角、锚索距离、锚索长度3个方面,设置最优锚索倾斜角、锚索距离、锚索长度参数值后,应用于降雨工况、地震工况中高速公路高边坡失稳位置处。测试结果显示:降雨工况、地震工况中高速公路高边坡分别在坡角、边坡表层中上位置失稳状态最明显,当锚索倾斜角是10°、锚索距离是5.5 m、锚索长度是6.5 m时,降雨工况、地震工况下高速公路高边坡锚索加固效果最佳,此时高速公路高边坡安全系数分别是0.98、0.96。To address the issue of anchor cable reinforcement for expressway high slopes under different working conditions,an optimization method for anchor cable reinforcement is proposed.Using FLAC software for simulation analysis,the stability state and failure locations of expressway high slopes under rainfall and earthquake conditions are determined.Based on the acquired instability information,anchor cable reinforcement parameters are optimized by adjusting three key factors:anchor cable inclination angle,spacing,and length.The optimal values for these parameters are then applied to the unstable locations of expressway high slopes under rainfall and earthquake conditions.Test results indicate that instability is most prominent at the slope toe under rainfall conditions and at the upper-middle surface of the slope under earthquake conditions.The best reinforcement effect is achieved when the anchor cable inclination angle is 10°,the spacing is 5.5 m,and the length is 6.5 m.Under these conditions,the safety factors of the expressway high slopes are 0.98 and 0.96 for rainfall and earthquake conditions,respectively.

关 键 词：不同工况 高速公路 高边坡 锚索 加固优化 FLAC软件 

分 类 号：U213.158[交通运输工程—道路与铁道工程] TU473.1[建筑科学—结构工程]