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中承式系杆拱桥具有较强的跨越能力,且具有独特的审美价值,相较于其他类型大跨径桥梁,具有良好的竞争力。随着我国桥梁建设的不断发展,中承式系杆拱桥的工程案例大量增加,但随着桥梁跨径的增大,中承式系杆拱桥的稳定问题也更加突出,甚至出现了由于桥梁失稳而导致结构损坏的质量安全事故。鉴于传统的解析方法已不适用于大跨度桥梁的稳定性分析,本文采用有限元方法对某工程实例桥的稳定性进行了研究,得出了一些结论,可供同类桥梁设计参考。
Zhongcheng Tied Arch Bridge has a strong ability to span, and has a unique aesthetic value, compared to other types of large-span bridges, has a good competitive edge. With the continuous development of bridge construction in our country, the number of projects of Zhongcheng Tied Arch Bridge has increased greatly. However, with the increase of bridge span, the stability of Tricyclic Tied Arch Bridge also becomes more prominent. Stable and lead to structural damage to quality and safety incidents. In view of the fact that the traditional analytical methods are not suitable for the stability analysis of long-span bridges, the finite element method is used to study the stability of a bridge project. Some conclusions are reached, which can be used as reference for similar bridges.