公路路基设计中的边坡防护问题分析  

Analysis of Slope Protection in Highway Subgrade Design

作　　者：张家亮 罗亮 ZHANG Jialiang;LUO Liang(Zhongjiaotongli Construction Co.,Ltd.,Xi'an,Sh aanxi 710075,China)

机构地区：[1]中交通力建设股份有限公司,陕西西安710075

出　　处：《黑龙江交通科技》2025年第4期16-19,24,共5页Communications Science and Technology Heilongjiang

摘　　要：为了防止公路路基边坡因雨水、河流等冲刷而破坏,分析了路基边坡中的植物防护、拱形骨架防护、护面墙防护、沿河路基防护等常见的问题。为了解决这些问题,植物防护要优先客土喷播,植物选择生命力强的当地树种(草本植物+低矮灌木),并合理控制草籽用量;拱形骨架防护要准确计算骨架厚度和骨架间距,确保弯曲拉力小于材料的弯拉强度,并控制好骨架的砌筑质量;护面墙防护时,基础要埋置在冰冻线以下至少0.25 m,间隔10 m设置沉降缝、伸缩缝,并在墙身设置2~3排泄水孔;对于沿河路基,多采用浸水挡土墙防护,且基础埋入冲刷深度以下,以防止基底被掏空。如已经出现路基边坡水毁现象,可通过抛石、临时便桥等措施进行临时修复。To prevent the destruction of highway embankment slopes due to erosion by rainwater and rivers,common issues such as vegetative protection,arched skeleton protection,retaining wall protection,and riverbank slope protection are analyzed.To address these issues,priority should be given to soil spraying for vegetative protection,selecting local tree species(herbs+low shrubs)with strong vitality,and reasonably controlling the amount of seeds;for arched skeleton protection,the thickness and spacing of the skeleton must be accurately calculated to ensure that the bending tensile force is less than the material's flexural strength,and the construction quality of the skeleton should be well controlled;when using retaining walls,the foundation should be buried at least 0.25 m below the frost line,with settlement joints and expansion joints set at intervals of 10 m,and 2~3 rows of drainage holes should be installed in the wall body;for riverbank slopes,water-retaining walls are often used,with the foundation buried below the erosion depth to prevent the base from being hollowed out.If water damage has already occurred on the slope,temporary repairs can be made through measures such as stone throwing or temporary bridges.

关 键 词：公路路基 植物防护 骨架防护 护面墙 挡土墙 

分 类 号：U416.14[交通运输工程—道路与铁道工程]