斜拉桥拱形钢塔的MTMD风振控制研究
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摘要
以杭州之江大桥为例,研究斜拉桥拱形钢塔动力特性及多重调谐质量阻尼器MTMD风振控制方法。运用ANSYS软件,分析拱形钢塔施工及成塔状态的动力特性,确定钢塔MTMD风振控制振型及频率。采用改进谐波合成法模拟随机性良好的脉动风场,以拱形钢塔顶部位移及加速度风振响应减振率为优化目标,对MTMD系统的参数进行优化分析,设计可控制拱形钢塔面内与面外振动的调谐质量阻尼器TMD结构及其参数。研究结果表明:MTMD系统的控制效率与其参数有很大关系,MTMD系统存在最优参数组合,对于拱形钢塔施工未合拢阶段(风振最不利状态),MTMD系统应选择质量比为0.01,TMD个数为12,阻尼比为0.05,带宽为0.1的参数组合。MTMD系统中各参数对结构位移和加速度减振效果的影响较为一致,一般加速度的减振率大于位移减振率。
Based on Zhijiang Bridge in Hangzhou,the dynamic characteristics and Multiple T uned Mass Dampers(MTMD) control method of wind-induced vibration for the arch steel tower of cable-stayed bridge were studied.Using software ANSYS, the dynamic characteristics of arch steel tower under construction and service status were analyzed.The control objectives of the vibration modes and frequenc y of the arch steel tower were suggested.Perfect stochastic fluctuating wind fi eld processes were generated by improved WAWS.With the wind vibration response reduction ratios of the displacement and acceleration at the top of arch steel t ower as optimization objectives,the parameters of MTMD system were optimized an d the Tuned Mass Damper(TMD) devices and parameters which could control the pla ne vibration and out-of-plane vibration for arch steel tower were designed.Th e results show that the control efficiency of MTMD system has much to do wit h its parameters,and MTMD system has optimum parameter combinations.Wh en the arch steel tower is under construction,especially at non-closure stage, (the most disadvantageous state of wind vibration),the parameter combinations for MTMD system are suggested: the mass ratio is 0.01,the number of TMD is 12, the damping ratio is 0.05 and the bandwidth is 0.1.The parameters in MTMD sy stem have a consistent vibration reduction effect on structural displacement and acceleration.In general,the vibration reduction ratio of acceleration is grea ter than that of displacement.
Based on Zhijiang Bridge in Hangzhou,the dynamic characteristics and Multiple T uned Mass Dampers(MTMD) control method of wind-induced vibration for the arch steel tower of cable-stayed bridge were studied.Using software ANSYS, the dynamic characteristics of arch steel tower under construction and service status were analyzed.The control objectives of the vibration modes and frequenc y of the arch steel tower were suggested.Perfect stochastic fluctuating wind fi eld processes were generated by improved WAWS.With the wind vibration response reduction ratios of the displacement and acceleration at the top of arch steel t ower as optimization objectives,the parameters of MTMD system were optimized an d the Tuned Mass Damper(TMD) devices and parameters which could control the pla ne vibration and out-of-plane vibration for arch steel tower were designed.Th e results show that the control efficiency of MTMD system has much to do wit h its parameters,and MTMD system has optimum parameter combinations.Wh en the arch steel tower is under construction,especially at non-closure stage, (the most disadvantageous state of wind vibration),the parameter combinations for MTMD system are suggested: the mass ratio is 0.01,the number of TMD is 12, the damping ratio is 0.05 and the bandwidth is 0.1.The parameters in MTMD sy stem have a consistent vibration reduction effect on structural displacement and acceleration.In general,the vibration reduction ratio of acceleration is grea ter than that of displacement.
引文
[1]黄士柏,郝俊峰.徐海军.拱形塔悬索斜拉组合结构桥梁的设计与施工[J].桥梁建设,2010(1):45-48.(HUANG Shibai,HAO Junfeng,XU Haijun.Design and Construction of a Hybrid Suspension and Cable-StayedBridge with Arch Pylon[J].Bridge Construction,2010(1):45-48.in Chinese)
[2]文永奎,孙利民.大跨度斜拉桥钢塔制振方案与参数分析[J].同济大学学报:自然科学版.2006,34(3):296-301.(WEN Yongkui,SUN Limin.Parametric Study on Vibration Control Scheme for Steel Tower of Large Span Cable-Stayed Bridge[J].Journal of Tongji University:Natural Science,2006,34(3):296-301.in Chinese)
[3]曹永睿.斜拉桥地震响应分析与桥塔MTMD风振控制研究[D].北京:北京交通大学,2006.(CAO Yongrui.The Study on Seismic Response of Cable Stayed Bridge and MTMD Wind Response Control of theBridge Tower[D].Beijing:Beijing Jiaotong University,2006.in Chinese)
[4]徐刚,王靖夫,任文敏,等.施工中大桥桥塔的TMD减振研究[J].工程力学,2003,20(6):106-110.(XU Gang,WANG Jingfu,REN Wenmin,et al.Reduction of Vibration during Construction of Bridge Towers byTMD[J].Engineering Mechanics,2003,20(6):106-110.in Chinese)
[5]贺媛,宋锦忠,杨詠昕.桥塔自立状态下抗风性能的比较研究[J].结构工程师,2007,23(6):49-55.(HE Yuan,SONG Jinzhong,YANG Yongxin.Comparative Study on Wind Resistance of Self-Supporting Pylons[J].Structural Engineers,2007,23(6):49-55.in Chinese)
[6]王中文,朱宏平,廖海黎,等.钢桥塔裸塔状态涡激振动的TLD减振方法研究[J].华中科技大学学报:城市科学版,2009,26(2):9-11.(WANG Zhongwen,ZHU Hongping,LIAO Haili,et al.Vortex-Induced Vibration Reduction of Steel Free-Stang-ding Tower Using Tuned Liquid Damper[J].Journal of HUST:Urban Science Edition,2009,26(2):9-11.inChinese)
[7]王中文,朱宏平,方秦汉,等.杭州湾跨海大桥北航道桥斜拉索减振研究[J].中国铁道科学,2010,31(2):45-49.(WANG Zhongwen,ZHU Hongping,FANG Qinhan,et al.Study on the Vibration Reduction of the Stayed-Cable onthe Northern Waterway Bridge of Hangzhou Bay Bridge[J].China Railway Science,2010,31(2):45-49.in Chi-nese)
[8]陈衡治,徐爱敏,叶昌勇,等.杭州湾大桥北航道桥结构优化研究[J].中国铁道科学,2004,25(3):76-79.(CHEN Hengzhi,XU Aimin,YE Changyong,et al.Study on Northern Channel Bridge Structure Optimization ofHangzhou Bay Bridge[J].China Railway Science,2004,25(3):76-79.in Chinese)
[9]马麟,刘健新,韩万水.基于改进谐波合成法的杭州湾跨海大桥风场模拟研究[J].郑州大学学报:工学版,2008,29(1):56-60.(MA Lin,LIU Jianxin,HAN Wanshui.Wind Field Simulation of the Hangzhou Bay Bridge Based on the ImprovedWAWS[J].Journal of Zhengzhou University:Engineering Science,2008,29(1):56-60.in Chinese)
[10]DEODATIS G.Simulation of Ergodic Multivariate Stochastic Processes[J].Journal of Engineering Mechanics.TheAmerican Society of Civil Engineers,1996,122(8):778-787.
[11]TORIUM IR,KATSUCHIH,FURUYAN.A Study on Spatial Correlation of Natural Wind[J].Journal of WindEngineering and Industrial Aerodynamics,2000,87:203-216.
[12]张海廷,马汝建,赵东.海洋平台减振装置设计及振动控制仿真研究[J].船海工程,2010,39(5):226-229.(ZHANG Haiting,MA Rujian,ZHAO Dong.Design and Simulation Analysis of Anti-Vibration Devices for OffshorePlatforms[J].Ship&Ocean Engineering,2010,39(5):226-229.in Chinese)
[2]文永奎,孙利民.大跨度斜拉桥钢塔制振方案与参数分析[J].同济大学学报:自然科学版.2006,34(3):296-301.(WEN Yongkui,SUN Limin.Parametric Study on Vibration Control Scheme for Steel Tower of Large Span Cable-Stayed Bridge[J].Journal of Tongji University:Natural Science,2006,34(3):296-301.in Chinese)
[3]曹永睿.斜拉桥地震响应分析与桥塔MTMD风振控制研究[D].北京:北京交通大学,2006.(CAO Yongrui.The Study on Seismic Response of Cable Stayed Bridge and MTMD Wind Response Control of theBridge Tower[D].Beijing:Beijing Jiaotong University,2006.in Chinese)
[4]徐刚,王靖夫,任文敏,等.施工中大桥桥塔的TMD减振研究[J].工程力学,2003,20(6):106-110.(XU Gang,WANG Jingfu,REN Wenmin,et al.Reduction of Vibration during Construction of Bridge Towers byTMD[J].Engineering Mechanics,2003,20(6):106-110.in Chinese)
[5]贺媛,宋锦忠,杨詠昕.桥塔自立状态下抗风性能的比较研究[J].结构工程师,2007,23(6):49-55.(HE Yuan,SONG Jinzhong,YANG Yongxin.Comparative Study on Wind Resistance of Self-Supporting Pylons[J].Structural Engineers,2007,23(6):49-55.in Chinese)
[6]王中文,朱宏平,廖海黎,等.钢桥塔裸塔状态涡激振动的TLD减振方法研究[J].华中科技大学学报:城市科学版,2009,26(2):9-11.(WANG Zhongwen,ZHU Hongping,LIAO Haili,et al.Vortex-Induced Vibration Reduction of Steel Free-Stang-ding Tower Using Tuned Liquid Damper[J].Journal of HUST:Urban Science Edition,2009,26(2):9-11.inChinese)
[7]王中文,朱宏平,方秦汉,等.杭州湾跨海大桥北航道桥斜拉索减振研究[J].中国铁道科学,2010,31(2):45-49.(WANG Zhongwen,ZHU Hongping,FANG Qinhan,et al.Study on the Vibration Reduction of the Stayed-Cable onthe Northern Waterway Bridge of Hangzhou Bay Bridge[J].China Railway Science,2010,31(2):45-49.in Chi-nese)
[8]陈衡治,徐爱敏,叶昌勇,等.杭州湾大桥北航道桥结构优化研究[J].中国铁道科学,2004,25(3):76-79.(CHEN Hengzhi,XU Aimin,YE Changyong,et al.Study on Northern Channel Bridge Structure Optimization ofHangzhou Bay Bridge[J].China Railway Science,2004,25(3):76-79.in Chinese)
[9]马麟,刘健新,韩万水.基于改进谐波合成法的杭州湾跨海大桥风场模拟研究[J].郑州大学学报:工学版,2008,29(1):56-60.(MA Lin,LIU Jianxin,HAN Wanshui.Wind Field Simulation of the Hangzhou Bay Bridge Based on the ImprovedWAWS[J].Journal of Zhengzhou University:Engineering Science,2008,29(1):56-60.in Chinese)
[10]DEODATIS G.Simulation of Ergodic Multivariate Stochastic Processes[J].Journal of Engineering Mechanics.TheAmerican Society of Civil Engineers,1996,122(8):778-787.
[11]TORIUM IR,KATSUCHIH,FURUYAN.A Study on Spatial Correlation of Natural Wind[J].Journal of WindEngineering and Industrial Aerodynamics,2000,87:203-216.
[12]张海廷,马汝建,赵东.海洋平台减振装置设计及振动控制仿真研究[J].船海工程,2010,39(5):226-229.(ZHANG Haiting,MA Rujian,ZHAO Dong.Design and Simulation Analysis of Anti-Vibration Devices for OffshorePlatforms[J].Ship&Ocean Engineering,2010,39(5):226-229.in Chinese)
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