摘要
以1联3×40 m先简支后连续预应力混凝土T梁桥为依托工程,建立空间梁格有限元模型,对连续墩双排支座采用不同的边界模拟,在最不利汽车荷载作用下,分析不同边界条件对梁桥结构控制截面内力及变形的影响,并比较各边界条件下结构的自振特性,为类似桥型的边界模拟提供参考。
This paper established the finite element model of space beam lattice by using 1 row 340 m simple support then continuous prestressed concrete T-beam bridge as sample project.Different boundary simulation is used for continuous double-row supports.Under the most unfavorable vehicle load,the influence of different boundary conditions on the internal force and deformation of the structural section of the beam bridge is analyzed,and the self-vibration characteristics of the structure under each boundary condition are compared,which can provide reference for the boundary simulation of similar bridges.
出处
《公路交通技术》
2017年第5期58-62,共5页
Technology of Highway and Transport
关键词
简支变连续T梁桥
双排支座
边界条件
空间梁格
自振特性
simple support then continuous T-beam bridge
double - row support
boundary condition
space beam lattice
self-vibration characteristics
