关键词: 桥梁工程, 钢桥面铺装, 疲劳试验, 温度分布, 预估模型

Abstract: The causes of long-span steel box girder steel deck pavement diseases were analyzed; the various types of evaluation methods on diseases and the technical indicators were discussed, and the thought and the method that a steel deck pavement design should effectively avoid pavement diseases were proposed. According to the survey of atmospheric temperature, the field test of pavement temperature and the research of axle load spectrum, the temperature and axle load parameters for steel deck pavement design were proposed. Based on the asphalt mixture dynamic modulus testing, finite element analysis to calculate the pavement structure, bituminous mixtures test, composite beam fatigue test, the changes of the steel deck pavement performance under varying conditions of temperature and axle load parameters were analyzed, which was a direct guidance to the new method for the deck pavement design. Finally, based on the rutting test, diametral compression test and composite beam fatigue test, fatigue life prediction models were proposed and used to evaluate the anti-pavement rutting, anti-cracking, anti-shearing and anti-peeling properties.

Key words: bridge engineering, steel deck pavement, fatigue test, temperature distribution, assessment model