分离式双箱梁斜拉桥全桥气弹模型设计与风洞试验研究
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摘要
以主跨为220m的台湾某独塔斜拉桥为背景,对该分离式双箱梁异形桥塔斜拉桥全桥气动弹性模型设计、制作、模态调试及风洞试验进行详细论述。介绍了斜拉索、主梁、横梁及斜拉索吊臂、桥塔的设计和制作方法,根据模态测试结果可知,该桥全桥气弹模型设计和制作能很好地满足试验要求,可为同类型桥梁全桥气弹模型设计提供参考和借鉴。对该桥进行了均匀流场涡激共振、颤振及紊流场涡激共振、抖振风洞试验,结果表明该桥具有较好的抗风稳定性。
The design,fabrication,modal test and wind tunnel test for a single pylon cable-stayed bridge in Taiwan( main span 220 m) were elaborated. The design and manufacture technique of structural components such as cable stays,girder,beam and cable-stayed rigid arms,pylons were expounded. The modal testing results showed that the design and manufacture of the bridge meet the test requirements well,and it could be adopted as a reference for model design of other similar bridges. Vortex-induced vibration( VIV) and flutter in uniform field,VIV and buffeting vibration in turbulence field were studied by wind tunnel test. The results approached that the bridge has good aerodynamic stability.
The design,fabrication,modal test and wind tunnel test for a single pylon cable-stayed bridge in Taiwan( main span 220 m) were elaborated. The design and manufacture technique of structural components such as cable stays,girder,beam and cable-stayed rigid arms,pylons were expounded. The modal testing results showed that the design and manufacture of the bridge meet the test requirements well,and it could be adopted as a reference for model design of other similar bridges. Vortex-induced vibration( VIV) and flutter in uniform field,VIV and buffeting vibration in turbulence field were studied by wind tunnel test. The results approached that the bridge has good aerodynamic stability.
引文
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[2]Zasso A,Cigada A,Negri C S.Flutter derivatives identification through full bridge aerolastic model transfer fuction analysis[J].Journal of Wind Engineering and Inustrial Aerodynamics,1996,60(1-3):1579-1606.
[3]胡峰强,陈艾荣.桁架悬索桥全桥气弹模型设计方法研究[J].公路,2009(2):124-129.
[4]许福友,马如进,陈艾荣,等.苏通大桥全桥气弹模型设计与模态调试[J].工程力学,2009,26(12):150-154.
[5]Zhu L D,Wang M,Wang D L.Flutter and buffeting performances of third Nanjing bridge over Yangtze river under yaw wind via aeroelastic model test[J].Journal of Wind Engineering and Inustrial Aerodynamics,2007,95(9-11):1579-1606.
[6]李玲瑶,葛耀君,陈伟东.大沽河航道桥全桥气弹模型风洞试验研究[J].桥梁建设,2007(5):17-20.
[7]陈艾荣.苏通大桥全桥气弹模型风洞试验研究[R].上海:同济大学土木工程防灾国家重点实验室,2004.
[8]李加武,黄森华,王新.开口断面斜拉桥主梁动力特性的有限元简化计算[J].建筑科学与工程学报,2013,30(4):59-64.
[9]周健,熊龙,王琦,等.大跨扁平钢箱梁悬索桥全桥气弹模型设计[J].重庆交通大学学报(自然科学版),2014,33(6).
[10]许福友,张哲,李天飞,等.台湾后龙溪桥风洞试验研究与静风响应分析[J].振动与冲击,2009,28(7):77-80.
[11]许福友,陈艾荣.苏通大桥静风响应分析[J].工程力学,2009,26(1):113-119.
[12]中华人民共和国交通部.JTG/T D60-01-2004公路桥梁抗风设计规范[S].北京:人民交通出版社,2004.