钢桥面沥青铺装层破坏原理分析及对策研究  

Failure Principle Analysis and Countermeasures of Asphalt Pavement on Steel Bridge Deck

作　　者：杨健 高艳滨 郭书峰 YANG Jian;GAO Yan-bin;GUO Shu-feng(Zhejiang Communications Investment Group Co.Ltd.,Hangzhou 310024,China;CCCC Highway Consultants Co.Ltd.,Beijing 100088,China)

机构地区：[1]浙江交投高速公路建设管理有限公司,杭州市310024 [2]中交公路规划设计院有限公司,北京市100088

出　　处：《公路》2022年第8期73-76,共4页Highway

摘　　要：针对某钢箱梁斜拉桥沥青铺装层出现的早期推移破坏,根据大桥健康监测系统提供的通车后6个月的结构温度、应力以及交通荷载监测数据,并结合铺装层施工过程调查,对铺装层推移破坏的原因进行了分析研究。结果表明,在高温、重载交通作用下,铺装层沥青混凝土稳定性下降,黏结强度降低,铺装层黏结失效,导致铺装层推移破坏。因此,钢桥面板铺装层宜建立实时温度监测系统,研究温度与铺装层力学特性之间的关系,形成预警机制,实现主动降温养护。In view of the early failure of the asphalt pavement of a steel box girder cable-stayed bridge, based on the structural temperature, stress and traffic load monitoring data provided by the structural health monitoring system for 6 months after opening to traffic, combined with the investigation of the pavement construction process, the reasons for the failure of the pavement layer are analyzed and studied. The results show that under the action of high temperature and heavy traffic, the stability of asphalt concrete pavement decreases, the bonding strength decreases, and the adhesion of the pavement layer fails, which leads to the destruction of the pavement layer. Therefore, it is suggested to establish a real-time temperature monitoring system for the steel bridge deck pavement so as to study the relationship between temperature and the mechanical properties of the pavement and form an early warning mechanism to achieve active maintenance.

关 键 词：钢桥面铺装 推移破坏 黏结强度 主动降温控制 结构健康监测 

分 类 号：U443.33[建筑科学—桥梁与隧道工程] U416.217[交通运输工程—道路与铁道工程]