桥梁撞击问题2020年度研究进展

State-of-the-art review of bridge impact research in 2020

桥梁撞击是既有以及在建桥梁长期面临的一个关键问题,撞击与防护问题研究符合发展需求,学者们近年来对其的关注度也不断增多。继《桥梁撞击问题2019年研究进展》,对2020年桥梁船撞、落石冲击和车撞桥梁等3方面的进展进行归纳总结。其中,对于桥梁船撞问题,新规范明确提出了公路桥梁主体结构宜采用基于性能的抗撞设计方法。2020年也发生了采砂船撞击桥梁事故、雅西高速桥梁被落石砸断等,以及多起车桥碰撞事件,对这些桥梁撞击事件进行了梳理,并根据个人理解对近一年的相关成果进行分析,提出了在未来研究中需要进一步考虑的问题。

Bridge impact is a key problem for existing bridges and bridges under construction for a long time.The research on impact and protection problems meets the needs of development.In recent years,scholars have paid more and more attention to bridge impact,and conducted a lot of researches.Following the New Progress and Prospect of Bridge Impact Research in 2019,the author continues to summarize the progress in 2020 in three aspects,such as bridge ship collision,rockfall impact and vehicle collision bridge.Among them,for the bridge ship collision problem,the new code clearly proposes that the main structure of highway bridge should adopt the performance-based anti-collision design method.In 2020,sand mining vessel collision accidents,the broken of Yaxi high-speed bridge,and many vehicle bridge collision events have occurred.This paper sortes these bridge impact events,analyzes and summarizes the relevant achievements in the past year according to personal understanding,and then puts forward the problems that need to be further considered in the future research.