高速铁路车桥耦合系统自振特性分析
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摘要
为了研究典型高速铁路简支箱梁桥-车辆耦合系统的自振特性,采用有限元方法,基于Midas-Civil软件建立了高速铁路简支梁车桥耦合有限元模型,分别考虑单桥模型、车桥耦合模型以及不同墩高等工况,计算得到了各工况模型的自振频率及振型变化。研究表明,高铁列车荷载和墩高的变化对车桥耦合系统自振特性均会产生较大的影响,车桥系统地震响应分析中应综合考虑不同影响因素的作用。
In order to study natural vibration characteristics of high-speed railway simply-supported box girder bridges and vehicle coupling systems,the high-speed railway simply supported bridge and train coupling model has been established by Midas-Civil based on the finite element method. The natural vibration frequency and vibration mode has been calculated considering single bridge model and vehicle-bridge coupling model with different pier height,the basic frequency range of the coupling system has been also given. Studies have shown that,changes of train load and pier height cause great effect to the coupling system,and different influencing factors should be considered in the seismic analysis of the coupling system.
In order to study natural vibration characteristics of high-speed railway simply-supported box girder bridges and vehicle coupling systems,the high-speed railway simply supported bridge and train coupling model has been established by Midas-Civil based on the finite element method. The natural vibration frequency and vibration mode has been calculated considering single bridge model and vehicle-bridge coupling model with different pier height,the basic frequency range of the coupling system has been also given. Studies have shown that,changes of train load and pier height cause great effect to the coupling system,and different influencing factors should be considered in the seismic analysis of the coupling system.
引文
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[4]陈令坤,等.高速铁路简支梁桥地震反应特性研究[J].振动与冲击,2011,30(12):216-222.CHEN Lingkun,et al.Search of high speed railway simply supported girder bridge seismic response characteristics[J].Journal of Vibration and Shock,2011,30(12):216-222.(in Chinese)
[5]GB50111铁路工程抗震设计规范[S].2006.GB50111 The Railway Engineering Anti-Earthquake Design Specification[S].2006.
[6]范立础.高架桥梁抗震设计[M].北京:人民交通出版社,2001.FAN Lichu.Elevated bridge seismic design[M].Beijing:People's Traffic Press,2001.(in Chinese)
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[8]王晓伟,叶爱君.大跨度斜拉桥地震反应分析谱分析中计算振型数研究[J].结构工程师,2011,27(4):84-90.WANG Xiaowei,YE Aijun.Large span cable-stayed bridge seismic response spectrum analysis in the calculation of vibration mode study[J].Journal of Structural Engineers,2011,27(4):84-90.(in Chinese)
[2]李国斌.世界高速铁路概况及京沪高速铁路的建设准备[J].铁道通信信号,1999(3):1-5.LI Guobin.The world of high speed railway survey and the construction of the Beijing-Shanghai high speed railway[J].Railway Signaling﹠Communication,1999(3):1-5.(in Chinese)
[3]韩艳,等.地震作用下高速铁路桥梁的动力响应及行车安全性研究[J].中国铁道科学2006,27(3):136-138.HAN Yan,et al.The action of the dynamic response under earthquake of a high-speed railway bridge and road safety study[J].China railway science 2006,27(3):136-138.(in Chinese)
[4]陈令坤,等.高速铁路简支梁桥地震反应特性研究[J].振动与冲击,2011,30(12):216-222.CHEN Lingkun,et al.Search of high speed railway simply supported girder bridge seismic response characteristics[J].Journal of Vibration and Shock,2011,30(12):216-222.(in Chinese)
[5]GB50111铁路工程抗震设计规范[S].2006.GB50111 The Railway Engineering Anti-Earthquake Design Specification[S].2006.
[6]范立础.高架桥梁抗震设计[M].北京:人民交通出版社,2001.FAN Lichu.Elevated bridge seismic design[M].Beijing:People's Traffic Press,2001.(in Chinese)
[7]翟婉明.车辆-轨道耦合动力学(第三版)[M].北京:科学出版社,1997.ZHAI Wanming.Vehicle-track coupling dynamics[M].3rd ed.Beijing:Science Press,1997.(in Chiese)
[8]王晓伟,叶爱君.大跨度斜拉桥地震反应分析谱分析中计算振型数研究[J].结构工程师,2011,27(4):84-90.WANG Xiaowei,YE Aijun.Large span cable-stayed bridge seismic response spectrum analysis in the calculation of vibration mode study[J].Journal of Structural Engineers,2011,27(4):84-90.(in Chinese)
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