高速公路既有混凝土路缘石表层病害分布特征及成因调查分析  

Investigation and Analysis on the Distribution Characteristics and Causes of Surface Diseases of Existing Concrete Curbs on Highways

作　　者：刘兴坤 赵飞龙 蔡乾东 宋军兴 柴国云 LIU Xing-kun;ZHAO Fei-long;CAI Qian-dong;SONG Jun-xing;CHAI Guo-yun(Gansu Communication Investment Management Co.,Ltd.,Lanzhou 730030,China;Gansu Road and Bridge Third Highway Engineering Co.,Ltd.,Lanzhou 730050,China;Shaanxi Dongdao Special Pavement Technology Co.,Ltd.,Xi'an 712000,China)

机构地区：[1]甘肃省交通投资管理有限公司,兰州730030 [2]甘肃路桥第三公路工程有限责任公司,兰州730050 [3]陕西东道特种路面科技有限公司,西安712000

出　　处：《价值工程》2025年第9期41-43,共3页Value Engineering

摘　　要：基于河西地区早期高速公路中央分隔带既有RA型混凝土路缘石表层病害的调查结果,提出了混凝土路缘石表层病害的划分等级,揭示了表层病害分布特征与发展规律;通过对既有混凝土路缘石表层病害成因分析表明:路缘石表层病害与卵石混凝土材料特性、河西地区干旱少雨、大风多风及寒冷气候有直接关系,沿线盐渍土及含氯融雪剂的化学腐蚀作用、冻融循环破坏等,直接加剧了混凝土路缘石的表层损坏,不同程度影响了路容路貌与交通行车安全。Based on the investigation results of the surface diseases of RA type concrete curbs in the early central divider of highways in Hexi region,a classification level of surface diseases of concrete curbs was proposed,revealing the distribution characteristics and development laws of surface diseases;Through the analysis of the causes of surface damage to existing concrete curbs,it is shown that the surface damage of curbs is directly related to the characteristics of pebble concrete materials,drought and low rainfall,strong winds and cold climates in the Hexi region.The chemical corrosion of saline soil and chlorine containing snow melting agents along the line,freeze-thaw cycle damage,etc.,directly exacerbate the surface damage of concrete curbs and affect the road appearance and traffic safety to varying degrees.

关 键 词：高速公路 中央分隔带 混凝土路缘石 表层病害 分布特征 

分 类 号：U415.11[交通运输工程—道路与铁道工程]