钢管混凝土提篮拱动力特性分析

Dynamic Property Analysis of Concrete Filled Steel Tubular (CFST) X Arch Bridges

钢管混凝土由于其独特的受力特点 ,已广泛地用于拱桥中。其中提篮拱由于其横向稳定性大等优越性 ,在公路与城市桥梁中被大量采用 ,对于其动力特性的分析已成为设计人员所关心的课题。拱肋内倾角的大小、横撑布置、吊杆形式等因素 ,不仅对桥梁的整体动力特性 (安全及舒适性 )起着一定的影响 ,而且关系到经济和美观等诸方面。故对上述因素进行分析 ,能够为合理、安全的设计提供参考依据。

The CFST has always been adopted in X arch bridges due to its superior properties. Highway and city bridges often use X arch bridges due to its superior stability and order properties. Most designers care about the analysis of its dynamic property. The effects of leaning angle, brace allocation, suspending pole mode not only have relationship with bridge safety, economy, esthetics,but also bave effects on the bridge dynamic property(safety and serviceability). So, it is necessary to analyse the influence of those factors on bridge dynamic property in order to give suggestion for designing this kind bridges.