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对于大跨径肋拱桥,横向联系的数量、布置位置及样式对其稳定性作用显著;但对于多为中、下承式桥梁的钢管混凝土拱桥,横撑在改善横向结构稳定性的同时,也使拱的质量和重心提高,对桥梁的整体动力特性产生影响;再加上人们景观的需求,要求在拱桥横向联系设计时优化选型、合理布置。在分析总结现有关于横撑对拱桥动力特性和稳定性影响方面研究成果的基础上,结合以往的设计经验,选择“X”横撑作为太平湖大桥的横向连接系,满足桥梁的稳定性要求的同时,获得简洁的结构和较好的景观效果。
For the large-span ribbed arch bridge, the quantity, location and style of lateral connection have a significant effect on the stability of the ribbed arch bridge. However, for the CFST arch bridge with middle and bottomless bridges, the cross brace can improve the stability of the transverse structure The quality and center of gravity of the arch will be improved, which will affect the overall dynamic characteristics of the bridge. Coupled with the demand of people’s landscape, it is required to optimize the selection and layout of the arch bridge in the horizontal contact design. Based on the analysis of the existing research results on the influence of the cross-beam on the dynamic characteristics and stability of the arch bridge, the “X” cross brace is selected as the horizontal connection system of the Taiping Lake Bridge to meet the stability of the bridge In the meantime, we can obtain the simple structure and good landscape effect.