人行桥随机人行荷载下的振动分析及其舒适度评价的新方法
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摘要
利用已有的建立在心理物理学方法之上的烦恼率模型以及传统的人行桥振动舒适度评价标准,建立适合于评估人行桥振动烦恼率的舒适度量化指标,提出了考虑人行桥竖向与侧向耦合振动时的综合评价方法,弥补了传统的关于人行桥振动舒适度评价方法的不足。通过模拟人行随机荷载激励对人行桥进行了人致振动时程分析并对其舒适度进行了评价,给出可行的减振措施并预测减振效果。这对今后人行桥人行荷载模拟、人行桥振动舒适度评价以及防振减振研究都具有参考借鉴意义。
Based on the existing annoyance rate method from mental physics and traditional criteria for comfort evaluation,a new annoyance rate method for footbridges and a comprehensive evaluation method considering coupling between vertical and lateral vibration are proposed,they remedies the traditional criteria for comfort evaluation of footbridges.The time histories of the response of an existing footbridge are given under the simulated stochastic pedestrian loads and its comfort evaluation is also performed using the proposed method.The appropriate vibration reduction measures are given and their effects are predicted.
Based on the existing annoyance rate method from mental physics and traditional criteria for comfort evaluation,a new annoyance rate method for footbridges and a comprehensive evaluation method considering coupling between vertical and lateral vibration are proposed,they remedies the traditional criteria for comfort evaluation of footbridges.The time histories of the response of an existing footbridge are given under the simulated stochastic pedestrian loads and its comfort evaluation is also performed using the proposed method.The appropriate vibration reduction measures are given and their effects are predicted.
引文
[1]Fitzpatrick T,Dallard P,Le Bourva S,Low A,Ridsdill-Smith R,Willford M.Linking London:The MillenniumBridge[A],The Royal Academy of Engineering,London,June 2001.
[2]朱滢编.实验心理学[M].北京:北京大学出版社,2000.
[3]宋志刚,金伟良.行走作用下梁板结构振动舒适度的烦恼率分析[J].振动工程学报,2005,18(3):288—292.
[4]涂瑞和,方丹群,等.用模糊数学原理评价城市居民对环境振动的主观反应[J].中国环境科学,1990,10(5):356—359.
[5]ISO2631-2:1989.Evaluation of human exposure to whole-body vibration part 2:Continuous and shock-induced vibra-tion in buildings(1 to 80Hz)[S].
[6]Bachmann H,Pretlove A,Rainer H.Vibration problems instructures:practical guidelines[M].Basel:Birkhauser Ver-lag,1995.
[7]Hauksson F.Dynamic behavior of footbridges subjected to pe-destrian-induced vibrations[D].Master's thesis,Lund Uni-versity,Sweden,2005.
[8]ISO2631-1:1997.Mechanical vibration and shock-evaluationof human exposure to whole-body vibration-part 1:generalrequirement[S].
[9]Zivanovic S,Pavic A,Reynolds P.Vibration serviceability offootbridges under human-induced excitation:A literature re-view[J].Journal of Sound and Vibration.2005.
[10]廖顺痒.人行天桥的设计与施工[M].上海:同济大学出版社,1995:28—30.
[11]Matsumoto Y,Nishioka T,Shiojiri H,Matsuzaki K.Dynam-ic design of footbridges[A].IABSE Proceedings.1978:1—15.
[12]法永生,李东.某人行天桥动力测试及其动力特性的有限元分析[J].建筑结构,2007,3.
[13]叶正强,李爱群等.某大跨人行天桥的消能减振设计(一)[J].特种结构,2003(20):68—70.
[14]方重,吕西林.电液伺服式TMD结构控制系统分析[J].世界地震工程,1994(4):18—23.
[2]朱滢编.实验心理学[M].北京:北京大学出版社,2000.
[3]宋志刚,金伟良.行走作用下梁板结构振动舒适度的烦恼率分析[J].振动工程学报,2005,18(3):288—292.
[4]涂瑞和,方丹群,等.用模糊数学原理评价城市居民对环境振动的主观反应[J].中国环境科学,1990,10(5):356—359.
[5]ISO2631-2:1989.Evaluation of human exposure to whole-body vibration part 2:Continuous and shock-induced vibra-tion in buildings(1 to 80Hz)[S].
[6]Bachmann H,Pretlove A,Rainer H.Vibration problems instructures:practical guidelines[M].Basel:Birkhauser Ver-lag,1995.
[7]Hauksson F.Dynamic behavior of footbridges subjected to pe-destrian-induced vibrations[D].Master's thesis,Lund Uni-versity,Sweden,2005.
[8]ISO2631-1:1997.Mechanical vibration and shock-evaluationof human exposure to whole-body vibration-part 1:generalrequirement[S].
[9]Zivanovic S,Pavic A,Reynolds P.Vibration serviceability offootbridges under human-induced excitation:A literature re-view[J].Journal of Sound and Vibration.2005.
[10]廖顺痒.人行天桥的设计与施工[M].上海:同济大学出版社,1995:28—30.
[11]Matsumoto Y,Nishioka T,Shiojiri H,Matsuzaki K.Dynam-ic design of footbridges[A].IABSE Proceedings.1978:1—15.
[12]法永生,李东.某人行天桥动力测试及其动力特性的有限元分析[J].建筑结构,2007,3.
[13]叶正强,李爱群等.某大跨人行天桥的消能减振设计(一)[J].特种结构,2003(20):68—70.
[14]方重,吕西林.电液伺服式TMD结构控制系统分析[J].世界地震工程,1994(4):18—23.
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