首页> 中文期刊>公路交通技术 >先简支后连续梁桥支座模拟方式对主梁受力性能的影响分析

先简支后连续梁桥支座模拟方式对主梁受力性能的影响分析

     

摘要

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.%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.

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