结构支承布置对曲线梁桥效应影响研究

The Research on the Influence of Structure Bearing Distribution on Curved Beam Bridge Effect

桥梁结构的支承对桥梁起着"承上启下"的关键性作用,以某互通区匝道上一座曲线梁桥为背景,通过对该曲线梁桥进行有限元建模,由于曲线梁桥存在"弯扭耦合效应",从改善主梁内扭矩分布及桥墩的受力状况、调整支承反力均衡的目的出发,拟用7种结构支承布置方案来研究其对曲线梁桥效应的影响,可供同类桥梁在设计中进行参考。

Taking a curved beam bridge of an interchange ramp as the background, through the finite element modeling of the curved beam bridge and due to the 'bending-torsional coupling effect'existed in the curved beam bridge, this paper studied the influence of the curved beam bridge with seven kinds of structural bearing distribution schemes to improve the torque distribution and bridge pier stress condition in the main beam and adjust the bearing reaction equilibrium, which also provided the reference for the similar bridge in the design.