船舶-桥墩碰撞动力响应分析研究

摘要:

船舶撞击作为跨航道桥梁服役期间常见的一种偶然荷载形式,为桥梁结构的安全运营带来了严重威胁。本文以某跨江桥梁为例,采用动力时程分析方法,对桥梁主墩进行了船-桥碰撞动力分析,研究不同撞击工况下桥墩的动力响应问题,并将有限元仿真分析的碰撞力与按国内外规范规定算法计算的撞击力进行了对比,提请桥梁设计者注意。

Abstract:

As a common accidental load form during the service of cross channel bridges, ship impact poses a serious threat to the safe operation of bridge structures. In this paper, taking a river crossing bridge as an example, the ship bridge collision dynamic analysis of the main pier of the bridge is carried out by using the dynamic time history analysis method, the dynamic response of the pier under different impact conditions is studied, and the collision force of the finite element simulation analysis is compared with the collision force calculated according to the algorithm specified in the codes at home and abroad, which draws the attention of the bridge designer.