高层结构屋顶构架风振控制设计与研究
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摘要
以合景大厦为工程背景,介绍了屋顶构架风振控制设计,并给出了基于弯曲错动耗能的阻尼片的试验性能分析及屋顶构架控制的数值计算结果.分析结果表明:增加阻尼材料厚度和钢板厚度均可增加阻尼片的耗能能力;在结构中布置阻尼片可以有效地降低屋顶构架及结构顶层的动力响应,能够较好地改善屋顶构架的层间相对位移,满足结构舒适度要求.构架层间位移角最大控制效果为41.4%,构架顶点位移响应最大值控制效果为13.9%,结构顶点加速度响应最大值控制效果为38.3%.在本工程采用的耗能减振技术,具有明显的技术经济效益.
This paper presents the design for wind-induced vibration control of roof truss,with the calculation results and experiment performance of energy dissipation damper given.The results of analysis show that performance of energy dissipation damper will increase with the increase of the thickness of damping material and steel plate.The dynamic response of roof truss and main structure will be reduced effectively when the damping device is disposed,and meliorate relative floor displacement of roof truss greatly,with the biggest control effect of floor displacement angle by 41.4%,the biggest control effect of the top displacement of truss by 13.9%,and the biggest control effect of the acceleration of main structure by 38.3%.Using the energy dissipation technique in this project demonstrates obvious technical and economic benefit.
This paper presents the design for wind-induced vibration control of roof truss,with the calculation results and experiment performance of energy dissipation damper given.The results of analysis show that performance of energy dissipation damper will increase with the increase of the thickness of damping material and steel plate.The dynamic response of roof truss and main structure will be reduced effectively when the damping device is disposed,and meliorate relative floor displacement of roof truss greatly,with the biggest control effect of floor displacement angle by 41.4%,the biggest control effect of the top displacement of truss by 13.9%,and the biggest control effect of the acceleration of main structure by 38.3%.Using the energy dissipation technique in this project demonstrates obvious technical and economic benefit.
引文
[1]滕军.深圳市梧桐山电视发射塔工程桅杆结构减振控制技术报告[R].深圳:哈尔滨工业大学深圳研生院,2004.TENGJun.Report of Induced Vibration and Control Technique of Wutong shan TV Tower in Shenzhen[R].Shenz-hen:Shenzhen Graduate School of Harbin Institute of Technology,2004.
[2]徐赵东,周洲,赵鸿铁,等.粘弹性阻尼器的计算模型[J].工程力学,2001,18(6):88-92.XU Zhao-dong,ZHOU Zhou,ZHAO hong-tie,et al,A New Model on Viscoelastic Dampers[J].Engineering Me-chanics,2001,18(6):88-92.
[3]欧进萍,吴斌,龙旭.耗能减振结构的抗震设计方法[J].地震工程与工程振动,1998,18(2):98-107.OUJin-ping,WUBin,LONG Xu.Aseismic Design Methods of Passive Energydissipation Systems[J].EarthquakeEngineering and Engineering Vibration,1998,18(2):98-107.
[4]吴波,李惠.建筑结构被动控制的理论与应用[M].哈尔滨:哈尔滨工业大学出版社,1997.WU Bo,LI Hui.Theory and Application of Passive Control of Construction Structure[M].Harbin:HarbinInstitudeof Technology Press,1997.
[5]欧进萍,张微敬.高层建筑结构的风振阻尼控制分析与设计方法[J].建筑结构学报,2003,24(6):32-37.OUJin-ping,ZHANG Wei-jing.Analysis and Design Method for Wind-induced Vibration Passive Damping Controlof Tall Buildings[J].Journal of Building Structures,2003,24(6):32-37.
[2]徐赵东,周洲,赵鸿铁,等.粘弹性阻尼器的计算模型[J].工程力学,2001,18(6):88-92.XU Zhao-dong,ZHOU Zhou,ZHAO hong-tie,et al,A New Model on Viscoelastic Dampers[J].Engineering Me-chanics,2001,18(6):88-92.
[3]欧进萍,吴斌,龙旭.耗能减振结构的抗震设计方法[J].地震工程与工程振动,1998,18(2):98-107.OUJin-ping,WUBin,LONG Xu.Aseismic Design Methods of Passive Energydissipation Systems[J].EarthquakeEngineering and Engineering Vibration,1998,18(2):98-107.
[4]吴波,李惠.建筑结构被动控制的理论与应用[M].哈尔滨:哈尔滨工业大学出版社,1997.WU Bo,LI Hui.Theory and Application of Passive Control of Construction Structure[M].Harbin:HarbinInstitudeof Technology Press,1997.
[5]欧进萍,张微敬.高层建筑结构的风振阻尼控制分析与设计方法[J].建筑结构学报,2003,24(6):32-37.OUJin-ping,ZHANG Wei-jing.Analysis and Design Method for Wind-induced Vibration Passive Damping Controlof Tall Buildings[J].Journal of Building Structures,2003,24(6):32-37.
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