180 m跨景观钢桁架桥风致振动试验研究  

Experimental Study on Wind-Induced Vibration of 180m Landscape Steel Truss Bridge

作　　者：陆军 张杭斌 黄青 刘陆海 郑建荣 LU Jun;ZHANG Hangbin;HUANG Qing;LIU Luhai;ZHENG Jianrong

机构地区：[1]浙江省轻工业品质量检验研究院,浙江杭州310018 [2]比木(浙江)工程咨询有限公司,浙江杭州310005 [3]杭州滨江水务市政工程有限公司,浙江杭州310051 [4]杭州滨江环境发展有限公司,浙江杭州310051

出　　处：《浙江建筑》2023年第6期12-18,共7页Zhejiang Construction

摘　　要：介绍了杭州市滨江区沿钱塘江区域亚运提升工程中180 m跨度的景观钢桁架桥(拱形桁架+张弦组合钢桥)的风致振动试验研究案例。风洞试验结果表明,由于该桥中间桥面是上下透风的钢桁架结构,杆件多,且桥面窄,有效干扰了卡门涡街的形成,实验过程中未出现明显的桥梁涡振现象。该桥即使在60 m/s风速作用下,其静力失稳、颤振稳定问题也能够得到保障。钢桁架人行桥的抗风试验研究为设计提供了充分的检验依据,亦可供类似钢桁架工程参考。This paper introduces the wind-induced vibration test of 180m landscape steel truss bridge(arch truss+tension-string composite steel bridge)in the Asian Games promotion project along Qiantang River in Binjiang District of Hangzhou City.The test result shows that no obvious vortex vibration phenomenon of the bridge occurs during the experiment due to the middle deck of the bridge is a steel truss structure with up-down ventilation,and many members and narrow deck which effectively interfere with the formation of Karman vortex street.The static instability and flutter stability of the bridge can be guaranteed even under the action of 60.0 m/s wind speed.The wind test study of steel truss footbridge provides sufficient inspection basis for design,and also can be used as reference for similar steel truss projects.

关 键 词：人行桥 拱形桁架+张弦组合钢桥 气动弹性模型试验 

分 类 号：U441.3[建筑科学—桥梁与隧道工程]