截面形式对波纹钢腹板桥梁动力特性的影响

随着对波纹钢腹板新型桥梁研究的深入开展,其动力性能也备受关注.波纹钢腹板桥梁截面形式的不同,对其动力性能有着很大的影响.本文针对常用的单箱双室和双箱双室两种截面形式,分别建立了有限元模型,得到了其自振特性,对其动力特性进行了分析比较.分析结果表明：波纹钢腹板箱梁在正常使用状态下,双箱双室截面的扭转刚度较截面为单箱双室箱梁偏低,整体性较差.本文的研究成果可以为波纹钢腹板桥梁的设计提供参考.

Influence Analysis of Section Types on Dynamic Characteristics of Bridges with Corrugated Steel Webs

Along with the deeply development of study on new kind of bridges with corrugated steel webs,its dynamic properties have been much concerned.The difference of section types of bridges with corrugated Steel Web has great influence to its dynamic properties.In this paper,according to construct the finite element model of the two commonly used section types-a single box with double chamber and two boxes with double chamber respectively,the natural vibration characteristics have been obtained and the dynamic characteristics have been compared.The analysis results show that the box girder with corrugated steel web in normal running condition,the torsional stiffness of two boxes with double chamber is lower than that of a single box with double chamber and the integrity is bad.The research results in this paper can provide reference for the design of bridges with corrugated steel webs.