新旧刚架拱桥横向连接前后力学性能分析

Analysis on Mechanical Properties of New and Old Rigid Frame Arch Bridge Before and After Lateral Connections

文章以新旧两座刚架拱桥为例,采用ANSYS建立单座刚架拱桥模型与双座连接刚架拱桥模型,分析新旧两座桥进行横向连接前后的荷载横向分布系数、设计荷载作用下的内力、固有频率及振型,得出结论:新旧刚架拱桥进行横向连接后,有助改善边梁受力情况,增强桥梁的动力性能,提高桥梁承载能力。

With a new and an old rigid-frame arch bridge as the example,this article established the single-seat rigid-frame arch bridge model and double-seat rigid-frame arch bridge model by ANSYS,to analyze the internal force,natural frequency and vibration type of new bridge and old bridge under lateral load distribution coefficients and design load before and after lateral connection,it was concluded that the lateral connection of old and new rigid-frame arch bridges can improve the force of side beams,enhance the dynamic performance of the bridge and improve the bearing capacity of the bridge.