钢管混凝土叠合系杆拱的结构稳定性分析

Stability Analysis of a Stacked Concretefilled Steeltabular Tied Arch Bridge

结合某钢管混凝土叠合系杆拱桥的施工方案,对叠合系杆拱桥的单片拱肋,通过与同跨度的哑铃型拱比较,分析了两种形式拱肋的面内、外稳定情况及其影响因素;同时又对该体系在成桥状态及运营状态下的整体稳定性,进行了相应的模态分析和探讨.

According to constructional sequence of a stacked concrete-filled steel-tabular tied arch bridge, the single ribs stability of in-of-plane and out-Of-plane and their influence factors are analyzed,compared with a dumb-bell arch bridge with same span. Meanwhile, the stability of stacked tied arch bridge after construction and in service is analyzed, and the model of the whole is analyzed and investigated.