南京大胜关长江大桥铁路钢桥面设计与研究  

Design and Study of Orthotropic Railway Steel Deck of Nanjing Dashengguan Changjiang River Bridge

作　　者：肖海珠[1] 刘承虞[1] 易伦雄[1] 

机构地区：[1]中铁大桥勘测设计院有限公司,湖北武汉430050

出　　处：《桥梁建设》2009年第4期9-12,45,共5页Bridge Construction

摘　　要：京沪高速铁路南京大胜关长江大桥为主跨336 m的连续钢桁拱桥,设计速度目标值300 km/h,铁路桥面需要较高的刚度和整体性。对纵横梁铁路桥面、正交异性板整体桥面进行分析、比较和论证,由于与主桁共同作用使纵横梁桥面的横梁产生较大的侧向弯矩,须设置伸缩纵梁和桥面断缝,不利于高速铁路行车和维修养护,因此采用整体性和刚度更好的多横梁正交异性板整体钢桥面。试验研究表明,正交异性钢桥面板的整体受力和疲劳性能都满足规范要求。Nanjing Dashengguan Changjiang River Bridge on Beijing-Shanghai High-Speed Railway is a continuous steel truss arch bridge with tWO main spans each 336 m. The designed target running speed for the Bridge is 300 km/h and the railway deck is thus required to have high stiffness and good integrity. In the design process, the longitudinal and cross beam deck system and the integral orthotropic steel deck system were analyzed, compared and verified. For the longitudinal and cross beam deck system, the joint action of the deck system and main truss will result in considerable lateral bending moment in the cross beams and the expansion joints are necessitated for the longitudinal beams and deck, which is however not favorable for the vehicle traveling and maintenance of the high-speed railway. In such case, the multiple cross beam integral orthotropic steel deck system having high stiffness and good integrity is selected. The tests and study indicate that both the integral mechanical behavior and fatigue performance of the orthotropic deck system can meet the requirements in specifications.

关 键 词：高速铁路 铁路桥 钢桁拱 桥面板 设计 研究 

分 类 号：U443.31[建筑科学—桥梁与隧道工程]