| 串列双流线型断面涡激振动气动干扰试验 |
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| 引用本文： | 刘志文,陈政清,栗小祜,周帅,吕建国.串列双流线型断面涡激振动气动干扰试验[J].中国公路学报,2011(3). |
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| 作者姓名： | 刘志文 陈政清 栗小祜 周帅 吕建国 |
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| 作者单位： | 湖南大学土木工程学院;湖南省通平高速公路建设开发有限公司;广西交通投资集团有限公司; |
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| 基金项目： | 国家自然科学基金项目(50608030);国家自然科学基金项目(50738002) |
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| 摘 要： | 在均匀流场下,分别对不同间距比D/B、不同阻尼比条件下上、下游流线型断面涡激振动气动干扰进行了风洞试验研究,并将上、下游流线型断面涡激振动锁定区间、涡激振动振幅与单流线型断面进行了对比。结果表明:上、下游流线型断面涡激振动锁定区间不因D/B及阻尼比的影响而改变,上、下游流线型断面D/B和阻尼比对其涡激振动振幅有影响;上游断面涡激振动气动干扰效应主要受D/B的影响,当D/B≤3时,对上游断面涡激振动的干扰效应表现为增大效应;当D/B>3时,对上游断面涡激振动的干扰效应可忽略;下游断面涡激振动气动干扰效应主要受上游断面涡激振动振幅影响,当上游断面振幅较大时,其对下游断面干扰效应主要表现为抑制作用;当上游断面振幅较小时,其对下游断面干扰效应则表现为增大效应;随着双幅断面间距增加,干扰效应逐渐减弱。
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| 关 键 词： | 桥梁工程 串列双流线型断面 风洞试验 气动干扰效应 涡激振动 均匀流 |
Aerodynamic Interference Test on Vortex-induced Vibration of Two Streamline Cylinders in Tandem |
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| LIU Zhi-wen,CHEN Zheng-qing,LI Xiao-hu,ZHOU Shuai,LU Jian-guo.Aerodynamic Interference Test on Vortex-induced Vibration of Two Streamline Cylinders in Tandem[J].China Journal of Highway and Transport,2011(3). |
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| Authors: | LIU Zhi-wen CHEN Zheng-qing LI Xiao-hu ZHOU Shuai LU Jian-guo |
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| Institution: | LIU Zhi-wen1,CHEN Zheng-qing1,LI Xiao-hu1,2,ZHOU Shuai1,3,LU Jian-guo1(1.School of Civil Engineering,Hunan University,Changsha 410082,Hunan,China,2.Tongping Expressway Construction & Development Co.Ltd of Hunan Province,Yueyang 414500,3.Guangxi Communications Investment Group Co.,Ltd.,Nanning 530028,Guangxi,China) |
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| Abstract: | Wind tunnel tests of aerodynamic interference on vortex-induced vibration(VIV) of windward and leeward streamlines with different separation ratios D/B and different damping ratios in smooth flow field were carried out.The lock-in regions and VIV amplitudes of windward and leeward streamline cylinders were compared with those of single streamline cylinder.The results show that the lock-in regions of VIV of windward and leeward streamline cylinders are not affected by D/B and damping ratio.However,the amplit... |
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| Keywords: | bridge engineering two streamline cylinders in tandem wind tunnel test aerodynamic interference effect VIV smooth flow |
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