城市钢桥通用铺装技术方案研究

Study on General Paving Technology Scheme of Steel Urban Bridge

针对城市钢桥点多、面广、量少三个特点,提出了城市钢桥通用铺装技术方案,采用了耐久的防水粘结体系,包括环氧云母防腐层,大剂量无溶剂环氧树脂防水层和热融颗粒粘接材料,铺装采用细粒式密实型高黏度沥青混合料保证密水性、柔韧性、高温稳定、抗滑性能,并利于后期养护维修。进行了一系列性能试验,包括材料拉拔试验、拉伸试验、随从性试验和铺装体系剪切、拉拔与疲劳试验,试验结果表明,该铺装体系具有较好路用性能与耐久性。

Aiming at three characteristics of more positions,wide places and a few number of steel urban bridge,the article puts forward the general paving technology scheme of steel urban bridge,introduces the durable waterproof bonding system including the epoxy mica anticorrosive coating,the large dose no solvent of epoxy resin waterproof layer and the hot melt particle bonding material.The paving construction using the fine-granule dense high-viscosity asphalt mixture can guarantee the watertight feature,flexibility,high-temperature stability and anti-skid performance,and is beneficial to the following maintenance and repair.A series of property test is carried out including the material pull-out test,stretching test,attendant test,and paving system shear,pull-out and fatigue tests.The test results show that this paving system has the better pavement performance and durability.