用能量法分析钢桥面沥青混合料铺装体系疲劳特性  

Energy Approach to Fatigue Characteristic of Steel Bridges Deck Asphalt Mixture Surfacing

作　　者：刘振清[1] 洪锦祥[2] 徐志峰 黄卫[2] 

机构地区：[1]交通部公路科学研究所,北京100088 [2]东南大学智能运输系统研究中心,江苏南京210096 [3]南京市水利科学研究院,江苏南京210024

出　　处：《公路交通科技》2005年第9期94-97,共4页Journal of Highway and Transportation Research and Development

摘　　要：介绍了沥青混合料的滞后回路方程和能耗分析方法,并用能量法分析了钢桥面沥青混合料铺装体系疲劳特性, 提出了疲劳寿命预测公式。通过南京长江第二大桥钢桥面铺装体系疲劳试验结果的实例分析,表明能量法可用于分析钢桥面沥青混合料铺装体系疲劳特性,其疲劳寿命预测结果是较为精确的,而且指出了环氧沥青混凝土铺装具有很好的抗疲劳性能。The stagnant loop equation and energy loss analysis of asphalt mixture is introduced.The fatigue characteristic of steel bridges deck asphalt mixture surfacing is researched by the energy method, and its prediction formula of fatigue life is proposed. The analysis of fatigue test results for steel bridges deck surfacing of Nanjing Second Yangtze River Bridge show that the energy method can be applied to analyze the fatigue characteristics of steel bridge deck asphalt mixture surfacing, and its prediction result of fatigue life is precise. Furthermore it is suggested that epoxy asphalt surfacing is proved to have good fatigue resistance performance.

关 键 词：钢桥面 沥青混合料铺装 能量法 疲劳 

分 类 号：U448.36[建筑科学—桥梁与隧道工程]