石济客运专线济南黄河桥正交异性钢桥面板设计研究

石济客运专线济南黄河桥主桥为公铁两用桥,上层的公路桥面及下层的铁路桥面均为正交异性钢桥面板,其除承受桥面局部荷载外,还参与体系受力。对于此类结构,我国规范没有明确规定,本文意对其关键构造进行研究,确保结构受力安全可靠。其公路及铁路桥面板设计符合欧洲规范(BS EN 1993-2:2006)、日本规范及铁路钢桥规范要求,采用的各细部构造抗疲劳性能好,同时,通过数值分析验证了设计的可靠性。此设计符合技术先进、安全可靠、经济合理等设计原则,其构造形式及分析方法可供类似结构借鉴。

Design Research of Orthotropic Steel Bridge Deck of Jinan Yellow River Bridge on Shijiazhuang-Jinan Railway Passenger Dedicated Line

The main bridge of the Jinan Yellow River Bridge on Shijiazhuang-Jinan Railway passenger dedicated line is a highway-railway combined bridge; and both the upper highway bridge deck and the lower railway bridge deck,which not only bear the local loads but also play a role in bearing the whole bridge system's loads,are of orthotropic steel bridge deck. But,there is no explicit stipulation in our country's bridge standard code which can be used for this kind of structure. So the aim of this paper was to research its key structures so as to ensure structural safety and reliability. After the research,it can be seen that: both the highway bridge deck and the railway bridge deck meet the requirements of the European code( BS EN 1993- 2:2006),the Japanese code and the Chinese railway steel bridge code; and every detailed structure adopted has good fatigue performance. At the same time,the reliability of this design was verified by the use of numerical analysis. It is concluded that this design can accord with the principle of advanced technology,safe and reliable structure,rational investment cost; and its detailed structures and analysis method can be referenced by similar projects.