摘要
采用计算流体力学(Computational Fluid Dynamic,CFD)方法替代传统的桥梁节段模型风洞试验,改进了大跨度桥梁抖振力计算方法。在香港青马大桥精细有限元模型基础上,模拟周围风场对主梁桥板压力分布,计算节点抖振力,求解局部应力响应,为桥梁抖振疲劳分析和结构健康监测打下了基础。
An improved computational method for buffeting forces of long span bridges,which substitutes the traditional wind tunnel test with the bridge segment model for CFD method,is proposed.In the case study of Tsing Ma Bridge,the pressure distribution induced by the wind field of the bridge decks was simulated.The nodal buffeting forces were computed and the local stress responses were obtained according to the CFD simulation and the refined finite element model.Preparation for buffeting induced fatigue analysis of bridges and structural health monitoring are provided.
出处
《土木建筑与环境工程》
CSCD
北大核心
2011年第6期59-63,共5页
Journal of Civil,Architectural & Environment Engineering
关键词
大跨度桥梁
计算流体力学
抖振
局部应力
long span bridge
computational fluid dynamic
buffeting
local stress
