一种风电塔架减振耗能装置的振动台试验研究
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摘要
风力发电技术发展迅速,风电塔架结构作为风机的主要支撑结构,在地震与强风荷载作用下的安全性须得到保证。本文将调谐液体阻尼(TLD)技术与颗粒阻尼(PD)技术结合,提出了一种新型减振耗能装置—调谐液体颗粒阻尼器(TL-PD),用于风力发电塔架结构的振动控制。为初步探索该阻尼装置对风电塔结构减振的效果,本文设计了一简易TL-PD,将其安装于单自由度体系顶部,开展了振动台试验。试验结果表明,TL-PD能够有效减小结构的动力响应,其减振效果受颗粒直径、密度、填充率、水深等因素影响,具有经济、实用和占用空间小的特点。
As one of renewable energy technologies,the wind power industry grows rapidly. Structural safety of wind turbine supporting structures under strong seismic and wind loads is one of concerns. This paper presents a shaking table test study on a new passive damper——the Tuned Liquid Particle Damper( TL-PD),for wind turbine tower vibration control. This new damper integrated uses the features of the tuned liquid damper( TLD) and the particle damper( PD). It is inexpensive and it has little occupancy for practical use considering limit spaces inside tubular steel towers. To investigate its workability,a series of shaking table tests are performed with the damper being installed on a single degree of freedom system. Test results show that this proposed TL-PD is capable to suppress dynamic responses of the structure. The effectiveness of the TL-PD is influenced by various parameters,which include particle size,density,packing ratio and water depth.
As one of renewable energy technologies,the wind power industry grows rapidly. Structural safety of wind turbine supporting structures under strong seismic and wind loads is one of concerns. This paper presents a shaking table test study on a new passive damper——the Tuned Liquid Particle Damper( TL-PD),for wind turbine tower vibration control. This new damper integrated uses the features of the tuned liquid damper( TLD) and the particle damper( PD). It is inexpensive and it has little occupancy for practical use considering limit spaces inside tubular steel towers. To investigate its workability,a series of shaking table tests are performed with the damper being installed on a single degree of freedom system. Test results show that this proposed TL-PD is capable to suppress dynamic responses of the structure. The effectiveness of the TL-PD is influenced by various parameters,which include particle size,density,packing ratio and water depth.
引文
[1]戴靠山,袁天骄,黄益超,等.风力发电塔架结构防灾研究综述[EB/OL].北京:中国科技论文在线[2013-11-01].(2014-4-28查).DAI Kaoshan,YUAN Tianjiao,HUANG Yichao,et al.A review of wind turbine tower structural safety studies[EB/OL].Beijing:Sciencepaper Online[2013-11-01].(2014-4-28).(in Chinese)
[2]闫维明,黄韵文,何浩祥,等.颗粒阻尼技术及其在土木工程中的应用展望[J].世界地震工程,2010,26(4):18-24.YAN Weiming,HUANG Yunwen,HE Haoxiang,et al.Particle damping technology and its application prospect in civil engineering[J].World Earthquake Engineering,2010,26(4):18-24.(in Chinese)
[3]Housner G W.Vibration of structures induced by seismic waves[J].Shock and Vibration Handbook,1961,3:1-32.
[4]DNV/Ris.Guidelines for design of wind turbines[M].Wind Energy Department of the RisNational Laboratory and Det Norske Veritas,Copenhagen,Denmark,2001.
[2]闫维明,黄韵文,何浩祥,等.颗粒阻尼技术及其在土木工程中的应用展望[J].世界地震工程,2010,26(4):18-24.YAN Weiming,HUANG Yunwen,HE Haoxiang,et al.Particle damping technology and its application prospect in civil engineering[J].World Earthquake Engineering,2010,26(4):18-24.(in Chinese)
[3]Housner G W.Vibration of structures induced by seismic waves[J].Shock and Vibration Handbook,1961,3:1-32.
[4]DNV/Ris.Guidelines for design of wind turbines[M].Wind Energy Department of the RisNational Laboratory and Det Norske Veritas,Copenhagen,Denmark,2001.
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