繁重交通高速公路半刚性基层注浆补强处治效果——以华南快速干线半刚性基层延寿项目为例  

Treatment Effect of Semi-rigid Base Grouting Reinforcement in Heavy Traffic Highways:Taking the Semi-rigid Base Extension Project of the South China Expressway as an Example

作　　者：刘延河 张敏 张瑜玲 LIU Yanhe;ZHANG Min;ZHANG Yuling(Guangzhou Tunhua Intelligent Transportation Technology Co.Ltd.,Guangzhou 510000,China;Xiaoning Institute of Roadway Engineering,Guangzhou,510641,China)

机构地区：[1]广州隧华智慧交通科技有限公司,广州510000 [2]广州肖宁道路工程技术研究事务所有限公司,广州510641

出　　处：《科技和产业》2025年第4期335-342,共8页Science Technology and Industry

基　　金：国家自然科学基金(52178426);广州华南快速路三期繁重交通高速公路半刚性基层结构服役性能演变及延寿关键技术研究项目((2023)BH105)。

摘　　要：随着基础设施的不断完善,繁重交通高速公路半刚性基层路面结构内部病害问题日益突出,特别是半刚性基层的维护与补强,是当前亟须解决的难题之一。依托华南快速干线项目开展半刚性基层注浆补强处治效果研究,采用5种不同的注浆材料对路面结构内部进行注浆处治,结合三维探地雷达与落锤式弯沉仪评估注浆前后路面结构内部病害与承载能力的变化。同时,构建注浆处治路面结构内部评价体系,从裂缝降低系数CRC、承载能力提升系数CIC与修补均匀系数RUC指标,分析哪种注浆材料注浆补强效果最佳。经评估,5种注浆材料对路面结构内部处治补强效果为:高强度地聚物(含隔水剂)>高强度地聚物(无隔水剂)>低强度地聚物(含隔水剂)>高聚物>低强度地聚物(无隔水剂)。With the continuous improvement of infrastructure,the issue of internal damage in the semi-rigid base layer structure of heavy traffic highways is becoming increasingly prominent.Particularly,the maintenance and reinforcement of semi-rigid base layers represent one of the urgent challenges that need to be addressed.Based on the South China Expressway project,the effectiveness of semi-rigid base layer grouting reinforcement was investigated.Five different grouting materials were used to treat the internal structure of the road surface.Three-dimensional ground penetrating radar and a falling weight reflectometer were combined to assess changes in internal damage and load-bearing capacity before and after grouting.Simultaneously,a evaluation system was constructed to assess the internal structure of the road surface treated with grouting,and analyze which grouting material achieves the best reinforcement effect based on indicators such as crack reduction coefficient(CRC),carrying capacity improvement coefficient(CIC)and repair uniformity coefficient(RUC).After evaluation,the grouting reinforcement effectiveness on the internal structure of the road surface by the five grouting materials is as follows:high-strength polymer(with waterproofing agent)>high-strength polymer(without waterproofing agent)>low-strength polymer(with waterproofing agent)>geopolymer>low-strength polymer(without waterproofing agent).

关 键 词：半刚性基层 注浆处治 无损检测 评价体系 

分 类 号：U416.224[交通运输工程—道路与铁道工程]