钢桁架人行天桥的振动实测分析与舒适度评价
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摘要
对连接2栋建筑净跨度达45 m的某曲线型钢桁架人行天桥展开现场人行振动加速度响应实测,得到了在各种行走和跳跃工况下人行天桥加速度响应的现场实测数据.基于希尔伯特-黄变换,对人行天桥结构的动力特性,包括自振频率和结构阻尼,进行了有效识别.利用有限元软件建立了该人行天桥结构有限元模型,分析天桥结构在行人荷载激励条件下的动力响应.对实测数据和数值分析结果进行比对,数值分析结果基本符合现场实测数据.最后,结合国内外规范对该天桥的人行舒适度进行了合理评价.
We carried out a field measurement on the pedestrian-induced vibration of a steel truss footbridge connecting two buildings with a curved planar shape and a net span up to 45 m. Based on the Hilbert-Huang transformation,we effectively identified the dynamic properties of the footbridge,i. e.,natural frequencies and damping ratios. We established the finite element mode of the footbridge. The finite element analysis results agree well with those of the field measurements. We also accessed the vibration serviceability of the footbridge using the domestic and international standards currently available.
We carried out a field measurement on the pedestrian-induced vibration of a steel truss footbridge connecting two buildings with a curved planar shape and a net span up to 45 m. Based on the Hilbert-Huang transformation,we effectively identified the dynamic properties of the footbridge,i. e.,natural frequencies and damping ratios. We established the finite element mode of the footbridge. The finite element analysis results agree well with those of the field measurements. We also accessed the vibration serviceability of the footbridge using the domestic and international standards currently available.
引文
[1]Cheng Xiongtao.Wind load and wind-induced vibration response analysis of long span footbridge[D].Shanghai:Tongji University,2007.(in Chinese)程雄涛.大跨度高空天桥风荷载及风振响应研究[D].上海:同济大学,2007.
[2]He Zongcheng,Wang Baisheng.Vibration test and analysis of long span footbridge[J].Journal of Vibration and Shock,2006,25(4):138-141.(in Chinese)何宗成,王柏生.大跨度人行天桥的振动影响测试与分析[J].振动与冲击,2006,25(4):138-141.
[3]Zhang Guanhua,Ge Yaojun.Vibration characteristics test and analysis of concrete box girder continuous pedestrian bridge[J].Journal of Vibration and Shock,2009,28(2):102-106.(in Chinese)张冠华,葛耀君.砼连续箱梁人行天桥振动特性测试与分析[J].振动与冲击,2009,28(2):102-106.
[4]Feng Peng,Jin Feifei,Ye Lieping,et al.Quantification of pedestrian's comfort level and dynamic properties of footbridge vibration based on in-situ measurement[J].Journal of Vibration Engineering,2013,26(4):545-553.(in Chinese)冯鹏,金飞飞,叶列平,等.人行天桥结构振动舒适度定量化与振动特性实测研究[J].振动工程学报,2013,26(4):545-553.
[5]Chen Bo,Wang Xin,Liu Hao,et al.Research on the vibration serviceability of a cable-stayed footbridge based on field measurement[J].Journal of Wuhan University of Technology,2013,35(7):99-103.(in Chinese)陈波,王鑫,刘浩,等.基于实测响应的斜拉人行桥人致振动舒适度研究[J].武汉理工大学学报,2013,35(7):99-103.
[6]Yuan Xubin,Sun Liming.Research on pedestrian-induced vibration of footbridge[D].Shanghai:Tongji University,2006.(in Chinese)袁旭斌,孙利民.人行桥人致振动特性研究[D].上海:同济大学,2006.
[7]Chen Zhengqing,Liu Guangdong.Pedestrian-induced vibration theory and dynamic design of footbridges[J].Engineering Mechanics,2009,A02:148-159.(in Chinese)陈政清,刘光栋.人行桥的人致振动理论与动力设计[J].工程力学,2009,A02:148-159.
[8]Sun Limin,Yan Xingfei.Human walking induced footbridge vibration and its serviceability design[J].Journal of Tongji University Natural Science,2004,32(8):996-999.(in Chinese)孙利民,闫兴非.人行桥人行激励振动及设计方法[J].同济大学学报自然科学版,2004,32(8):996-999.
[9]Li Quan.Human-induced stochastic vibration and optimal control for long-span footbridges and floors[D].Beijing:Tsinghua University,2010.(in Chinese)李泉.人致激励下大跨人行桥及楼盖随机振动及优化控制[D].北京:清华大学,2010.
[10]Chen Gang,Chen Yuquan,Zhou Jie.Vibration analysis and design on vibration reduction of long-span corridor due to pedestrian excitation[J].Journal of Yantai University Natural Science and Engineering Edition,2013,26(2):151-155.(in Chinese)陈刚,陈玉泉,周杰.大跨度天桥人致振动分析与减振设计[J].烟台大学学报自然科学与工程版,2013,26(2):151-155.
[11]Li Dong,Fa Yongsheng,Sun Cuihua,et al.Analysis on pedest rian-induced vibration and comfort evaluation of an footbridge[J].Building Structure,2008,38(6):50-53.(in Chinese)李东,法永生,孙翠华,等.某人行桥人致振动分析及其舒适度评价[J].建筑结构,2008,38(6):50-53.
[12]Yang Lulei,Zhu Xunyan.Analysis on improving walking comfort for large-span corridor structure[J].Journal of Guilin University of Technology,2012,32(3):425-429.(in Chinese)杨律磊,朱寻炎.某大跨度混凝土天桥舒适度分析[J].桂林理工大学学报,2012,32(3):425-429.
[13]Chen Jieliang.Reasearch on vibration comfort of footbridge induced by pedestrian excitation[D].Hangzhou:Zhejiang University,2007.(in Chinese)陈阶亮.行人激励下人行天桥的振动舒适性研究[D].杭州:浙江大学,2007.
[14]Fan Jiansheng,Chen Yu,Nie Jianguo.Optimum design of tuned mass damper for footbridge[J].Engineering Mechanics,2012,29(9):133-140.(in Chinese)樊健生,陈宇,聂建国.人行桥的TMD减振优化设计研究[J].工程力学,2012,29(9):133-140.
[15]Xu Xin.The study of pedestrian suspension bridge's comfort evaluation and control method[D].Hangzhou:Zhejiang University,2010.(in Chinese)徐欣.人行悬索桥舒适度评价及控制方法研究[D].杭州:浙江大学,2010.
[16]Liu Yin.Comfort evaluation for footbridge vibration[D].Wuhan:Wuhan University of Technology,2010.(in Chinese)刘寅.人行天桥振动舒适度评价研究[D].武汉:武汉理工大学,2010.
[17]Xiao Xueshuang.Research on human-induced vibration comfort and vibration comfort control for steel pedestrian bridge[D].Changsha:Changsha University of Science and Technology,2009.(in Chinese)肖学双.钢结构人行桥人致振动舒适度及其控制研究[D].长沙:长沙理工大学,2009.
[18]Jin Feifei.Vibration comfort level design for lightweight FRP footbridges[D].Beijing:Tsinghua University,2012.(in Chinese)金飞飞.轻质FRP人行桥振动舒适度设计方法研究[D].北京:清华大学,2012.
[19]CJJ69—1995 Technical specification of urban pedestrian overcrossing and underpass[S].(in Chinese)CJJ69—1995城市人行天桥与人行地道技术规范[S].
[20]Chen Jun,Xu Youlin,Li Jie.Hilbert-Huang transform for damping ratio identification of structures with closely spaced modes of vibration[J].Earthquake Engineering and Engineering Vibration,2003,23(4):34-42.(in Chinese)陈隽,徐幼麟,李杰.Hilbert-Huang变换在密频结构阻尼识别中的应用[J].地震工程与工程振动,2003,23(4):34-42.
[21]Ellis B R,Ji T,Littler J D.The response of grandstands to dynamic crowd loads[J].ICE-Structures and Buildings,2000,140(4):355-365.
[22]BSI5400 Steel,concrete and composite bridges[S].
[23]Gulvanessian H,Calgaro J A,Holicky M.Designer's guide to EN1990:basis of structural design[M].Glasgow(Scotland):Thomas Telford,2002.
[24]ISO2631—1 Mechanical vibration serviceability of footbridges under human-induced excitation:a literature review[S].
[2]He Zongcheng,Wang Baisheng.Vibration test and analysis of long span footbridge[J].Journal of Vibration and Shock,2006,25(4):138-141.(in Chinese)何宗成,王柏生.大跨度人行天桥的振动影响测试与分析[J].振动与冲击,2006,25(4):138-141.
[3]Zhang Guanhua,Ge Yaojun.Vibration characteristics test and analysis of concrete box girder continuous pedestrian bridge[J].Journal of Vibration and Shock,2009,28(2):102-106.(in Chinese)张冠华,葛耀君.砼连续箱梁人行天桥振动特性测试与分析[J].振动与冲击,2009,28(2):102-106.
[4]Feng Peng,Jin Feifei,Ye Lieping,et al.Quantification of pedestrian's comfort level and dynamic properties of footbridge vibration based on in-situ measurement[J].Journal of Vibration Engineering,2013,26(4):545-553.(in Chinese)冯鹏,金飞飞,叶列平,等.人行天桥结构振动舒适度定量化与振动特性实测研究[J].振动工程学报,2013,26(4):545-553.
[5]Chen Bo,Wang Xin,Liu Hao,et al.Research on the vibration serviceability of a cable-stayed footbridge based on field measurement[J].Journal of Wuhan University of Technology,2013,35(7):99-103.(in Chinese)陈波,王鑫,刘浩,等.基于实测响应的斜拉人行桥人致振动舒适度研究[J].武汉理工大学学报,2013,35(7):99-103.
[6]Yuan Xubin,Sun Liming.Research on pedestrian-induced vibration of footbridge[D].Shanghai:Tongji University,2006.(in Chinese)袁旭斌,孙利民.人行桥人致振动特性研究[D].上海:同济大学,2006.
[7]Chen Zhengqing,Liu Guangdong.Pedestrian-induced vibration theory and dynamic design of footbridges[J].Engineering Mechanics,2009,A02:148-159.(in Chinese)陈政清,刘光栋.人行桥的人致振动理论与动力设计[J].工程力学,2009,A02:148-159.
[8]Sun Limin,Yan Xingfei.Human walking induced footbridge vibration and its serviceability design[J].Journal of Tongji University Natural Science,2004,32(8):996-999.(in Chinese)孙利民,闫兴非.人行桥人行激励振动及设计方法[J].同济大学学报自然科学版,2004,32(8):996-999.
[9]Li Quan.Human-induced stochastic vibration and optimal control for long-span footbridges and floors[D].Beijing:Tsinghua University,2010.(in Chinese)李泉.人致激励下大跨人行桥及楼盖随机振动及优化控制[D].北京:清华大学,2010.
[10]Chen Gang,Chen Yuquan,Zhou Jie.Vibration analysis and design on vibration reduction of long-span corridor due to pedestrian excitation[J].Journal of Yantai University Natural Science and Engineering Edition,2013,26(2):151-155.(in Chinese)陈刚,陈玉泉,周杰.大跨度天桥人致振动分析与减振设计[J].烟台大学学报自然科学与工程版,2013,26(2):151-155.
[11]Li Dong,Fa Yongsheng,Sun Cuihua,et al.Analysis on pedest rian-induced vibration and comfort evaluation of an footbridge[J].Building Structure,2008,38(6):50-53.(in Chinese)李东,法永生,孙翠华,等.某人行桥人致振动分析及其舒适度评价[J].建筑结构,2008,38(6):50-53.
[12]Yang Lulei,Zhu Xunyan.Analysis on improving walking comfort for large-span corridor structure[J].Journal of Guilin University of Technology,2012,32(3):425-429.(in Chinese)杨律磊,朱寻炎.某大跨度混凝土天桥舒适度分析[J].桂林理工大学学报,2012,32(3):425-429.
[13]Chen Jieliang.Reasearch on vibration comfort of footbridge induced by pedestrian excitation[D].Hangzhou:Zhejiang University,2007.(in Chinese)陈阶亮.行人激励下人行天桥的振动舒适性研究[D].杭州:浙江大学,2007.
[14]Fan Jiansheng,Chen Yu,Nie Jianguo.Optimum design of tuned mass damper for footbridge[J].Engineering Mechanics,2012,29(9):133-140.(in Chinese)樊健生,陈宇,聂建国.人行桥的TMD减振优化设计研究[J].工程力学,2012,29(9):133-140.
[15]Xu Xin.The study of pedestrian suspension bridge's comfort evaluation and control method[D].Hangzhou:Zhejiang University,2010.(in Chinese)徐欣.人行悬索桥舒适度评价及控制方法研究[D].杭州:浙江大学,2010.
[16]Liu Yin.Comfort evaluation for footbridge vibration[D].Wuhan:Wuhan University of Technology,2010.(in Chinese)刘寅.人行天桥振动舒适度评价研究[D].武汉:武汉理工大学,2010.
[17]Xiao Xueshuang.Research on human-induced vibration comfort and vibration comfort control for steel pedestrian bridge[D].Changsha:Changsha University of Science and Technology,2009.(in Chinese)肖学双.钢结构人行桥人致振动舒适度及其控制研究[D].长沙:长沙理工大学,2009.
[18]Jin Feifei.Vibration comfort level design for lightweight FRP footbridges[D].Beijing:Tsinghua University,2012.(in Chinese)金飞飞.轻质FRP人行桥振动舒适度设计方法研究[D].北京:清华大学,2012.
[19]CJJ69—1995 Technical specification of urban pedestrian overcrossing and underpass[S].(in Chinese)CJJ69—1995城市人行天桥与人行地道技术规范[S].
[20]Chen Jun,Xu Youlin,Li Jie.Hilbert-Huang transform for damping ratio identification of structures with closely spaced modes of vibration[J].Earthquake Engineering and Engineering Vibration,2003,23(4):34-42.(in Chinese)陈隽,徐幼麟,李杰.Hilbert-Huang变换在密频结构阻尼识别中的应用[J].地震工程与工程振动,2003,23(4):34-42.
[21]Ellis B R,Ji T,Littler J D.The response of grandstands to dynamic crowd loads[J].ICE-Structures and Buildings,2000,140(4):355-365.
[22]BSI5400 Steel,concrete and composite bridges[S].
[23]Gulvanessian H,Calgaro J A,Holicky M.Designer's guide to EN1990:basis of structural design[M].Glasgow(Scotland):Thomas Telford,2002.
[24]ISO2631—1 Mechanical vibration serviceability of footbridges under human-induced excitation:a literature review[S].
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