肋间横撑对钢管混凝土拱桥稳定性的影响

Effect of Transverse Brace on Stability of Concrete-filled Steel Tube Arch Bridges

采用有限元法对钢管混凝土拱桥的稳定性进行了计算分析,探讨了横撑样式、横撑刚度对钢管混凝土拱桥稳定性的影响,讨论了其常见的失稳模态,并从理论上给予了解释,结果表明横撑的形式对钢管混凝土拱桥的横桥向稳定性起决定性作用,横撑刚度也有一定的影响。

In this paper, the finite element method is used to analyze the stability of concrete-filled steel tube arch bridges. The effects of the transverse brace shape and the transverse brace stiffness on the stability of the concrete-filled steel tube arch bridges are discussed. The normal unstable modalities are described as well, which are analyzed theoretically. The results show that the transverse brace shape greatly affects the lateral stability of the concrete-filled steel tube arch bridges and the transverse stiffness has a little influence too.