关于曲线预制装配式桥梁与现浇桥梁的受力性能研究

Study on Mechanical Behaviors of Curved Prefabricated Bridges and Cast-in-place Bridges

弯桥由于"弯-扭"耦合作用的存在,使得桥梁体现外梁超载、内梁卸载的受力特性。为研究曲线预制装配式桥梁与曲线现浇桥梁受力性能的差异,文中阐述了曲线预制装配式桥梁与曲线现浇桥梁构造上的差异,并通过有限元计算分析,对比了2类桥梁的内力状态,证明了曲线现浇桥梁体现了明显的弯桥特性,而曲线预制装配式桥梁相对而言并不明显。

Due to the flexural-torsional coupling, the curved bridges have the characteristics of overloading of external beam and unloading of internal beam.In order to study the difference of mechanical performance between curved prefabricated bridge and curved cast-in-situ bridge, the structural differenceis expounded, and the internal force states of those two bridges are compared in detail through finite element analysis. It is proved that the characteristics of curvilinear cast-in-place bridges are similar to that of curved bridges, while curvilinear cast-in-place bridges do not follow that of curved bridges.