摘要
大跨径自锚式悬索桥的主梁内力随跨径增加而迅速增大,其钢混结合段的受力和构造也较同类跨径的混合梁斜拉桥更为复杂,是影响桥梁整体结构受力的关键问题。结合主跨600 m的重庆鹅公岩轨道专用桥,对大跨径自锚式悬索桥混合梁结合段的受力机理进行有限元分析。研究钢格室及其过渡段的传力机理,讨论连接件布置、连接件刚度以及格室腹板开孔等设计参数对混合梁受力的影响,确定合理的结合段构造。
Due to the internal force of girder growing rapidly with the increase of span of long-span self-anchored suspension bridges, the joint section of hybrid girder is the key problem, and the structure of it is more complex than the one in cable-stayed bridges with an similar span. In this paper, the mechanics mechanism of joint part of steel-concrete girder connection is presented, based on the finite element model of E-gong-yan bridge which is a 600 m span self-anchored suspension bridge. Mechanical behavior and load transmission mechanism of joint part is studied, influence in aspects of connector arrangement, shear stiffness of connector and hole in cell web are discussed, and the reasonable structure is determined.
出处
《上海公路》
2018年第3期28-33,共6页
Shanghai Highways
关键词
自锚式悬索桥
混合梁
连接件
受力分析
有限元
sell-anchored suspension bridge
hybrid girder
connector
mechanical analysis
finite element
