景观钢箱圆弧拱桥设计与静动力分析

摘要:

以三跨钢箱景观圆弧拱桥为例,介绍桥梁总体布置、上下部结构设计、建筑景观设计。为验证结构设计的合理性,利用大型有限元软件对桥梁结构进行了静力、稳定、特征值计算分析和两阶段两水平抗震设计分析,结果表明：1)主桥结构的刚度、强度、稳定性均满足规范要求。2)在E1、E2地震作用下,采用弯矩曲率曲线进行验算,结构均处于弹性状态,截面抗弯强度满足要求。3)通过对该桥的设计、静力、动力计算的介绍,可为同类景观圆弧拱桥的设计提供借鉴和参考。

Abstract:

Taking the three-span steel box landscape circular arch bridge as an example, the overall arrangement, structure design of upper and lower parts, architectural landscape design of the bridge are introduced. In order to verify the rationality of the structural design, the static force, stability, eigenvalue calculation and two-stage and two-level seismic design analysis of the bridge structure are carried out by using large finite element software. The results show that: 1) The stiffness, strength and stability of the main bridge structure meet the requirements of the code. 2) Under the action of E1 and E2 earthquakes, the bending moment curvature curve was used for checking calculation. The structure was in elastic state, and the bending strength of the section met the requirements. 3) By introducing the design, static and dynamic calculation and construction scheme of the bridge, it can provide reference for the design of similar landscape circular arch Bridges.