钢管混凝土桁式桥墩风速参数敏感性分析  

Sensitivity Analysis of Wind Speed Parameters for Concrete-Filled Steel Tubular Truss Piers

作　　者：潘靖勃 于建华 陈甫君 张谢东[1] PAN Jingbo;YU Jianhua;CHEN Fujun;ZHANG Xiedong(Wuhan University of Technology,School of Transportation and Logistics Engineering,Wuhan 430063,China;Sichuan Transportation Construction Group Co.,Ltd.,Chengdu 610041,China)

机构地区：[1]武汉理工大学交通与物流工程学院,武汉430000 [2]四川省交通建设集团股份有限公司,成都610041

出　　处：《交通科技》2023年第4期42-45,81,共5页Transportation Science & Technology

基　　金：四川交建集团科技项目资助。

摘　　要：为研究钢管混凝土桁式桥墩表面风压和风速分布随入流风速参数变化的敏感性,文中采用FLUENT 19.2建立结构风场模型,并通过改变入流风速和风向角的大小进行数值模拟计算和分析。结果表明,钢管混凝土桁式桥墩表面风压随入流风速大小的均匀增加呈非线性关系递增,且各根钢管构件均符合此变化规律,表面风速则随入流风速大小的均匀增加呈线性关系增加;而结构表面风压和风速随入流风向角的改变只在较小范围内发生波动,各根钢管构件符合迎风面积越大、压力越大的一般规律。In order to study the sensitivity of surface wind pressure and wind speed distribution on steel tube concrete truss bridge piers to changes in inflow wind speed parameters,FLUENT 19.2 is used to establish a structural wind field model,and numerical simulation calculations and analysis are conducted by changing the magnitude of inflow wind speed and wind direction angle.The results show that the surface wind pressure of steel tube concrete truss bridge piers increases nonlinearly with the uniform increase of inflow wind speed,and each steel tube component conforms to this change pattern.The surface wind speed increases linearly with the uniform increase of inflow wind speed.However,the surface wind pressure and wind speed of the structure fluctuate only within a small range with the change of the inflow wind direction angle,and each steel pipe component follows the general law that the larger the windward area,the greater the pressure.

关 键 词：钢管混凝土桁式桥墩 数值模拟计算 风速参数敏感性分析 

分 类 号：U441[建筑科学—桥梁与隧道工程]