拱桥的平面内屈曲性能研究

Investigation of the Arch In-Plane Buckling Behaviour in Arch Bridges

对系杆拱桥进行有限元建模,分析拱的平面内屈曲长度系数,并将其与EC3中推荐的数值进行比较。首先简要介绍了EC3中针对拱的平面内屈曲性能提出的分析方法。随后说明了系杆拱桥的模型、桥梁特性和计算方法,并进行了参数分析。同时也对拉索损坏的情况进行了讨论。最后归纳了研究结论。

A Finite Element Method model of a tension-tie arch bridge has been created in order to investigate the in-plane buckling length factor of the arches and to compare it with the corresponding value given by Eurocode 3. First a brief description of the analytical solutions and the Eurocode 3 provisions regarding the in-plane buckling of the arches is given. Subsequently the modelling of the tension-tie arch bridge in a FEM program, the bridges properties and the solution procedure are described. The parametr...