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大跨度中承式钢管混凝土拱桥抗震性能分析
Seismic Performance Analysis of a Large-Span Half-Through Arch Bridge with Concrete Filled Steel Tube Ribs
【摘要】 以福建省某大跨度中承式钢管混凝土拱桥为研究对象,通过建立空间结构有限元分析模型,计算和分析了该中承式大跨度钢管混凝土拱桥的动力特性,并运用时程分析法计算了该桥在纵向、横向和纵向+横向有地震输入时的地震响应,分析了该桥对不同地震反应的受力特点和规律性,为大跨度中承式钢管混凝土拱桥的抗震设计提供理论依据.
【Abstract】 A large-span half-through arch bridge with concrete filled steel tube ribs arch ribs located in Fujian Province was studied in this paper,and the dynamic characteristics of this large span half-through arch bridge are calculated and analyzed by using a three-dimensional finite element model.In addition,three-dimensional seismic response of this bridge is obtained by the use of time history method.The effects of the longitudinal,the cross and the longitudinal+cross direction input of earthquake motion on seismic response of this bridge have been discussed.This study provides a theoretical basis for the seismic design of large span half-through arch bridge with concrete filled steel tube ribs.
【Key words】 Half-through arch bridge; seismic response; dynamic characteristic; time-history analysis;
- 【文献出处】 河南科学 ,Henan Science , 编辑部邮箱 ,2006年05期
- 【分类号】U441.3
- 【被引频次】7
- 【下载频次】152