基于粘滞阻尼器的元江大桥减震设计方案
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摘要
为了提高大跨度桥梁的抗震性能水平,基于粘滞阻尼器的结构减震控制技术成为专家学者研究的重点和工程设计人员首先考虑的抗震设防措施。现有成果主要集中在大跨度公路斜拉桥的研究和应用,在山区的非规则高墩钢桁连续梁桥研究的较少。以云南省元江大桥为例,采用Midas/civil建立弹性分析的有限元模型,对元江大桥进行了动力特性分析。采用快速非线性时程分析方法对粘滞阻尼器参数进行了优化分析,并且总结了粘滞阻尼器参数对高墩连续梁桥的减震作用规律。最后,通过有控和无控结构的地震动响应对比分析,评价了安装阻尼器后的结构主控部位的减震效果。结果表明:减震控制提高了结构的安全性。
In order to improve the seismic performance of long-span bridges,the structural damping control technology based on the viscous dampers has become both the focus researched by experts and scholars and the seismic fortification measures considered firstly by the engineering designers. The existing references mainly focus on the research and application of long-span cable-stayed bridges,and there are fewer researches on irregular high pier steel truss continuous girder bridges in the mountains. In this paper,taking the Yuanjiang bridge in Yunnan Province as an example,the finite element model forelastic analysis was established by Midas/civil,and the dynamic characteristics of the bridge were analyzed. The parameters of the viscous dampers wereoptimized by the fast nonlinear time history analysis method,and the damping effect of the viscous damper parameters on the high pier continuous girder bridge was summarized. Finally,was compared and analyzed,the damping effect of the main control part of the structure after installing the damper wasevaluated by comparing and analyzing the seismic response ofcontrolled and uncontrolled structures. The results shows that the dampingcontrol improves the safety of the structure.
In order to improve the seismic performance of long-span bridges,the structural damping control technology based on the viscous dampers has become both the focus researched by experts and scholars and the seismic fortification measures considered firstly by the engineering designers. The existing references mainly focus on the research and application of long-span cable-stayed bridges,and there are fewer researches on irregular high pier steel truss continuous girder bridges in the mountains. In this paper,taking the Yuanjiang bridge in Yunnan Province as an example,the finite element model forelastic analysis was established by Midas/civil,and the dynamic characteristics of the bridge were analyzed. The parameters of the viscous dampers wereoptimized by the fast nonlinear time history analysis method,and the damping effect of the viscous damper parameters on the high pier continuous girder bridge was summarized. Finally,was compared and analyzed,the damping effect of the main control part of the structure after installing the damper wasevaluated by comparing and analyzing the seismic response ofcontrolled and uncontrolled structures. The results shows that the dampingcontrol improves the safety of the structure.
引文
[1]范立础.桥梁抗震[M].上海:同济大学出版社,1997:8-13.FAN Lichu. Bridge Seismic[M]. Shanghai:Tongji University Press,1997:8-13.(in Chinese)
[2]叶爱君,范立础.附加阻尼器对超大跨度斜拉桥的减震效果[J].同济大学学报(自然科学版),2006,34(7):859-863.YE Aijun,FAN Lichu. Damping effect of additional damper on super-long span cable-stayed bridge[J]. Journal of Tongji University(Natural Science Edition),2006,34(7):859-863.(in Chinese)
[3]瞿伟廉,刘嘉.天兴洲主梁纵向地震反应的被动控制[J].武汉理工大学学报,2007,29(1):128-131.QU Weilian,LIU Jia. Passive control of longitudinal seismic response of tianxingzhou main girder[J]. Journal of Wuhan University of Technology,2007,29(1):128-131.(in Chinese)
[4]张永亮,陈兴冲,吴海燕.基于粘滞液体阻尼器的铁路钢桁梁桥减震研究[J].世界地震工程,2009,25(4):97-102.ZHANG Yongliang,CHEN Xingchong,WU Haiyan. Study on seismic reduction of railway steel truss bridge based on viscous fluid damper[J].World Earthquake Engineering,2009,25(4):97-102.(in Chinese)
[5]刘俊,王合希.阻尼器在长联多跨刚构连续梁桥中的应用研究[J].工程抗震与加固改造,2012,34(5):90-96.LIU Jun,WANG Hexi. Application of dampers in long-span multi-span rigid frame continuous beam bridge[J]. Engineering Seismic and Reinforcement,2012,34(5):90-96.(in Chinese)
[6]张永亮,陈兴冲.客运专线大跨斜拉桥减震方案优化分析[J].应用基础与工程科学学报,2014,22(1):160-169.ZHANG Yongliang,CHEN Xingchong. Optimization analysis of cushioning scheme for long-span cable-stayed bridge of passenger dedicated railway[J]. Journal of Applied Basic and Engineering Sciences,2014,22(1):160-169.(in Chinese)
[7]奚灵智,李小刚,韦华.粘滞阻尼器在全漂浮体系斜拉桥抗震设计中的功效分析[J].中外公路,2012,2(30):103-110.XI Lingzhi,LI Xiaogang,WEI Hua. Efficacy analysis of viscous dampers in seismic design of full-floating cable-stayed bridge[J]. Chinese and Foreign Roads,2012,2(30):103-110.(in Chinese)
[8]巫生平,张超,房贞政.斜拉桥粘滞阻尼器设计方案及参数回归分析[J].桥梁建设,2014,5(44):21-26.WU Shengping,ZHANG Chao,FANG Zhenzheng. Design scheme and parameter regression analysis of viscous damper for cable-stayed Bridge[J].Bridge Construction,2014,5(44):21-26.(in Chinese)
[9]韩万水,王浩,李爱群.斜拉桥纵向设置粘滞阻尼器参数分析[J].地震工程与工程振动报,2015,25(6):146-151.HAN Wanshui,WANG Hao,LI Aiqun. Parameter analysis of viscous dampers in longitudinal direction of cable-stayed bridge[J]. Earthquake Engineering and Engineering Vibration Report,2015,25(6):146-151.(in Chinese)
[10]娄锋.大跨度斜拉桥阻尼器参数分析[J].世界地震工程,2015,1(31):129-133.LOU Feng. Parametric analysis of large span cable-stayed bridge[J]. World Earthquake Engineering,2015,1(31):129-133.(in Chinese)
[11]邵旭东,程祥云,李立峰.桥梁设计与计算[M].北京:人民交通出版社,2012:342-345.SHAO Xudong,CHENG Xiangyun,LI Lifeng. Bridge Design and Calculation[M]. Beijing:China Communications Press,2012:342-345.(in Chinese)
[12]陈永祁.桥梁工程液体粘滞阻尼器设计与施工[M].北京:中国铁道出版社,2012:35-41.CHEN Yongqi. Design and Construction of Liquid Viscous Dampers for Bridge Engineering[M]. Beijing:China Railway Press,2012:35-41.(in Chinese)
[2]叶爱君,范立础.附加阻尼器对超大跨度斜拉桥的减震效果[J].同济大学学报(自然科学版),2006,34(7):859-863.YE Aijun,FAN Lichu. Damping effect of additional damper on super-long span cable-stayed bridge[J]. Journal of Tongji University(Natural Science Edition),2006,34(7):859-863.(in Chinese)
[3]瞿伟廉,刘嘉.天兴洲主梁纵向地震反应的被动控制[J].武汉理工大学学报,2007,29(1):128-131.QU Weilian,LIU Jia. Passive control of longitudinal seismic response of tianxingzhou main girder[J]. Journal of Wuhan University of Technology,2007,29(1):128-131.(in Chinese)
[4]张永亮,陈兴冲,吴海燕.基于粘滞液体阻尼器的铁路钢桁梁桥减震研究[J].世界地震工程,2009,25(4):97-102.ZHANG Yongliang,CHEN Xingchong,WU Haiyan. Study on seismic reduction of railway steel truss bridge based on viscous fluid damper[J].World Earthquake Engineering,2009,25(4):97-102.(in Chinese)
[5]刘俊,王合希.阻尼器在长联多跨刚构连续梁桥中的应用研究[J].工程抗震与加固改造,2012,34(5):90-96.LIU Jun,WANG Hexi. Application of dampers in long-span multi-span rigid frame continuous beam bridge[J]. Engineering Seismic and Reinforcement,2012,34(5):90-96.(in Chinese)
[6]张永亮,陈兴冲.客运专线大跨斜拉桥减震方案优化分析[J].应用基础与工程科学学报,2014,22(1):160-169.ZHANG Yongliang,CHEN Xingchong. Optimization analysis of cushioning scheme for long-span cable-stayed bridge of passenger dedicated railway[J]. Journal of Applied Basic and Engineering Sciences,2014,22(1):160-169.(in Chinese)
[7]奚灵智,李小刚,韦华.粘滞阻尼器在全漂浮体系斜拉桥抗震设计中的功效分析[J].中外公路,2012,2(30):103-110.XI Lingzhi,LI Xiaogang,WEI Hua. Efficacy analysis of viscous dampers in seismic design of full-floating cable-stayed bridge[J]. Chinese and Foreign Roads,2012,2(30):103-110.(in Chinese)
[8]巫生平,张超,房贞政.斜拉桥粘滞阻尼器设计方案及参数回归分析[J].桥梁建设,2014,5(44):21-26.WU Shengping,ZHANG Chao,FANG Zhenzheng. Design scheme and parameter regression analysis of viscous damper for cable-stayed Bridge[J].Bridge Construction,2014,5(44):21-26.(in Chinese)
[9]韩万水,王浩,李爱群.斜拉桥纵向设置粘滞阻尼器参数分析[J].地震工程与工程振动报,2015,25(6):146-151.HAN Wanshui,WANG Hao,LI Aiqun. Parameter analysis of viscous dampers in longitudinal direction of cable-stayed bridge[J]. Earthquake Engineering and Engineering Vibration Report,2015,25(6):146-151.(in Chinese)
[10]娄锋.大跨度斜拉桥阻尼器参数分析[J].世界地震工程,2015,1(31):129-133.LOU Feng. Parametric analysis of large span cable-stayed bridge[J]. World Earthquake Engineering,2015,1(31):129-133.(in Chinese)
[11]邵旭东,程祥云,李立峰.桥梁设计与计算[M].北京:人民交通出版社,2012:342-345.SHAO Xudong,CHENG Xiangyun,LI Lifeng. Bridge Design and Calculation[M]. Beijing:China Communications Press,2012:342-345.(in Chinese)
[12]陈永祁.桥梁工程液体粘滞阻尼器设计与施工[M].北京:中国铁道出版社,2012:35-41.CHEN Yongqi. Design and Construction of Liquid Viscous Dampers for Bridge Engineering[M]. Beijing:China Railway Press,2012:35-41.(in Chinese)