摘要
随着国家交通事业的发展,横跨峡谷地形的桥梁越来越多,近年来高墩波形钢腹板PC箱梁桥因其自身重量轻的特点越来越受欢迎。但是,随着桥梁周围风场越来越复杂,使得桥梁结构对风敏感度提高。本文以保定地区的胭脂河高墩波形钢腹板PC箱梁桥为研究对象,通过数值模拟的方法,运用Fluent软件计算了桥梁表面的静力三分力系数,运用Matlab软件编制相关程序模拟了桥梁箱梁高度处的风场,模拟了抖振响应对桥梁结构及行车舒适度的影响,结果表明在保定地区的基准风速下,桥梁部分箱梁单元对抖振响应比较敏感,在抖振力的长期作用下容易发生疲劳损坏,通过与舒适度指标对比发现抖振响应对行车舒适度影响较小。
With the development of national transportation,there are more and more bridges across the canyon terrain.In recent years,PC box girder bridge with high pier and corrugated steel webs has become more and more popular because of its light weight.However,as the wind field around the bridge becomes more and more complex,the bridge structure becomes more and more sensitive to wind.This paper takes the rouge river high-pier corrugated steel web PC box girder bridge in Baoding area as the research object,through the numerical simulation method,the static three-component force coefficient of the bridge surface is calculated by the Fluent software,and the relevant program is simulated by the Matlab software.For the wind field at the height of the bridge box girder,the impact of buffeting response on the bridge structure and driving comfort is simulated.The results show that under the reference wind speed in Baoding area,part of the box girder bridge unit of buffeting response is sensitive,fatigue damage is easy to occur under the long-term action of chattering force.By comparing with comfort index,it is found that chattering response has little influence on driving comfort.
作者
高子浩
闫亚光
GAO Zihao;YAN Yaguang(Hebei University of Engineering,Handan 056000,China)
出处
《粉煤灰综合利用》
CAS
2021年第1期129-135,共7页
Fly Ash Comprehensive Utilization
关键词
高墩桥梁
数值模拟
抖振
舒适度
high pier bridge
numerical simulation
buffeting
comfort
