公路桥面铺装早期破坏原因及治理方法概述.docVIP

公路桥面铺装早期破坏原因及治理方法 摘　要 近些年来随着我国国内经济的飞速增长，道路桥梁建设也进入了快速发展的阶段，并且道路上的车辆日趋大型化、重型化以及交通量迅猛增长，使道路经受的冲击力、荷载疲劳程度及应力超过频率不断提高，路面铺装层损坏比较严重，整修次数也越来越多，路面铺装的早期损坏已成为影响公路交通发挥正常使用功能的一大阻碍，并且成为诱发交通事故的主要原因。交通量和重型车辆的增加，桥面铺装病害时有发生．这不仅妨碍了正常交通，影响了桥面的美观，更易造成交通事故，也给维修工作带来了很大困难．近年来，人们对于因桥面铺装病害造成的直接和间接的经济损失给予了足够的重视．桥面铺装的早期损坏已成为影响高速公路使用功能的发挥和诱发交通事故的主要因素。桥面柔性铺装能大大缓和行车对桥板的冲击，较易达到运营中平稳舒适的要求，随着沥青材料性能的改进，应用将更加广泛，但现行规范对沥青铺装结构的设计主要从所用材料、做法及厚度等方面作指导性的说明，这就造成了在实际设计，桥面铺装层只作为桥梁工程的附属结构，设计者对其甚少花费精力，从而为桥面铺装的损坏埋下了。 关键词： Abstract In recent years, with the rapid growth of Chinas domestic economy, road and bridge construction has entered a stage of rapid development, and the path of the vehicle is large, heavy and traffic volume rapid growth, the road impact force, subjected to load fatigue and stress exceeds the frequency rate continues to increase, more serious damage of pavement layer repair times, more and more, pavement early damage has become one of the major obstacles influencing highway traffic play normal function, and become the main causes of traffic accidents. Increase the volume of traffic and heavy vehicle, deck pavement diseases have occurred. This not only hinders the normal traffic, influence aesthetics of bridge deck, more easy to cause traffic accidents, but also to the repair work has brought great difficulties. In recent years, people pay enough attention to the direct and indirect economic losses caused by the disease of bridge deck pavement. Decking early failure has become a major factor affecting the highway use function and induced traffic accident. Bridge deck pavement can greatly ease the traffic on the bridge plate impact, easy to operation, stability and comfortable, with the improvement of asphalt material performance, the application will be more extensive, but the current specification of the asphalt pavement structure design mainly from the materials used, methods and thickness, not instructions, this resulting in the actual design, bridge deck pavement layer only as accessory