| 大跨度桥梁主梁风雨致涡激振动试验研究 |
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| 引用本文： | 辛大波,张明晶,王亮,欧进萍,李惠.大跨度桥梁主梁风雨致涡激振动试验研究[J].哈尔滨工程大学学报,2011,32(9):1168-1172. |
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| 作者姓名： | 辛大波 张明晶 王亮 欧进萍 李惠 |
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| 作者单位： | 1. 哈尔滨工业大学土木工程学院,黑龙江哈尔滨,150090
2. 哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090;大连理工大学土木水利学院,辽宁大连116024 |
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| 基金项目： | 国家自然科学基金重大研究计划重点资助项目(90815022,90815030),国家自然科学基金资助项目(50908069) |
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| 摘 要： | 针对风雨联合作用下的大跨桥梁风雨致涡激振动问题,以某一分离式双箱主梁桥梁及其闭口主梁型式桥梁为研究对象,通过在大气边界层风洞中搭建风雨联合作用试验系统,完成风雨联合作用下大跨桥梁节段模型涡激振动试验.试验结果显示:不同雨强下,开口节段模型涡激振动的起振风速及锁定风速基本一致,但最大振动幅值有一定差别.不同雨强下,闭口节段模型随机振动的振动时程有一定差别,且随着风速增大,振动幅值增大.开口节段模型风雨联合作用下的位移幅值大于单一风作用下的位移幅值,最大增量可达1/4.得出结论:降雨增大了桥梁主梁涡激振动幅值;闭口节段模型相对开口节段模型在抵抗涡激振动方面性能更优良.
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| 关 键 词： | 涡激振动 风雨联合作用 桥梁主梁节段 风洞试验 |
Experimental study on wind-rain-induced and vortex-induced vibration in bridge deck sections of long-span bridges |
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| XIN Dabo,ZHANG Mingjing,WANG Liang,OU Jinping,LI Hui.Experimental study on wind-rain-induced and vortex-induced vibration in bridge deck sections of long-span bridges[J].Journal of Harbin Engineering University,2011,32(9):1168-1172. |
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| Authors: | XIN Dabo ZHANG Mingjing WANG Liang OU Jinping LI Hui |
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| Affiliation: | XIN Dabo1,ZHANG Mingjing1,WANG Liang1,OU Jinping1,2,LI Hui1(1.School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China,2.School of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian 116024,China) |
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| Abstract: | The vortex-induced vibration test in bridge deck sections of long-span bridges was carried out by considering vortex-induced vibration characteristics under the simultaneous actions of wind and rain,taking a separated twin-box girder bridge and its closed form as research objects.A system of simultaneous actions of wind and rain built in an atmospheric boundary layer wind tunnel was also utilized.Experimental results display that the wind speed at the start of oscillation and the wind speed of the lock-in r... |
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| Keywords: | vortex-induced vibration simultaneous actions of wind and rain bridge deck section wind tunnel test |
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