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双层公路钢桁梁桥车桥耦合振动

, PP. 20-28

Keywords: 桥梁工程,双层公路钢桁梁桥,分离法,冲击效应,车桥耦合振动,数值模拟,冲击系数

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Abstract:

为研究车桥耦合振动对双层公路钢桁桥冲击效应的影响,基于分离法,以车轮与桥面接触点为界,将车桥耦合振动系统分为车辆与桥梁2个子系统,分别采用虚功原理与有限元法建立各自的运动方程,并通过车轮与桥面接触处的位移协调条件及车桥相互作用力的平衡关系相联系,采用迭代法求解系统响应。以某双层公路简支钢桁梁桥为研究对象,应用ANSYS软件建立三维梁格有限元模型,分析了车速、桥梁阻尼、桥面平整度及不同加载模式对车桥耦合振动的影响。研究结果表明车速与双层钢桁梁桥冲击系数之间没有规律性的函数关系;桥梁阻尼增大,能使钢桁桥杆件内力、位移冲击系数适当降低;桥面平整度是车桥耦合振动的一个重要激励,桥面状况越差则车辆振动越强烈,对桥梁的整体和局部产生的冲击作用越大;单双层加载模式的不同对桥梁整体的动力响应改变不大,但是对局部动力响应的影响比较明显,应在桥梁设计时考虑局部冲击效应的影响。

References

[1]  刘永健,刘 剑,刘君平,等.刚性悬索加劲钢桁梁桥施工阶段全桥模型试验研究[J].土木工程学报,2010,43(2):72-78. LIU Yong-jian, LIU Jian, LIU Jun-ping, et al. Integral model test of steel truss bridge stiffened with rigid cables in construction stage[J]. China Civil Engineering Journal, 2010, 43(2): 72-78.(in Chinese)
[2]  方秦汉,高宗余,李加武.中国铁路钢桥的发展历程及展望[J].建筑科学与工程学报,2008,25(4):1-5. FANG Qin-han, GAO Zong-yu, LI Jia-wu. Development course and prospect of steel railway bridges in China[J]. Journal of Architecture and Civil Engineering, 2008, 25(4): 1-5.(in Chinese)
[3]  米 静.车桥耦合振动对双层钢桁桥的冲击作用研究[D].西安:长安大学,2011. MI Jing. Study on the dynamic response of double-deck steel truss bridge under moving vehicles[D]. Xi'an: Chang'an University, 2011.(in Chinese)
[4]  李小珍,张黎明,张 洁.公路桥梁与车辆耦合振动研究现状与发展趋势[J].工程力学,2008,25(3):230-240. LI Xiao-zhen, ZHANG Li-ming, ZHANG Jie. State-of-the-art review and trend of studies on coupling vibration for vehicle and highway bridge system[J]. Engineering Mechanics, 2008, 25(3): 230-240.(in Chinese)
[5]  KAWATANI M, KOMATSU S. Nonstationary random response of highway bridges under a series of moving vehicles[J]. Structural Engineering/Earthquake Engineering, 1988, 5(2): 285-292.
[6]  WANG T L, HUANG D Z. Cable-stayed bridge vibration due to road surface roughness[J]. Journal of Structural Engin-eering, 1992, 118(5): 1354-1374.
[7]  CHATTERJEE P K, DATTA T K, SURANA C S. Vibration of continuous bridges under moving vehicles[J]. Journal of Sound and Vibration, 1994, 169(5): 619-632.
[8]  ZHENG D Y, CHEUNG Y K, AU F T K, et al. Vibration of multi-span non-uniform beams under moving loads by using modified beam vibration functions[J]. Journal of Sound and Vibration, 1998, 212(3): 455-467.
[9]  沈火明,肖新标.求解车桥耦合振动问题的一种数值方法[J].西南交通大学学报,2003,38(6):658-662. SHEN Huo-ming, XIAO Xin-biao. Numerical method for vehicle-bridge coupled vibrations[J]. Journal of Southwest Jiaotong University, 2003, 38(6): 658-662.(in Chinese)
[10]  王 达,刘 扬,黄平明.随机车流作用下双曲拱桥车-桥耦合振动研究[J].中国公路学报,2009,22(6):67-73. WANG Da, LIU Yang, HUANG Ping-ming. Research on vehicle-bridge coupled vibration for two-way curved arch bridge under random traffic flow[J]. China Journal of Highway and Transport, 2009, 22(6): 67-73.(in Chinese)
[11]  米 静,刘永健,刘 剑.车-桥耦合振动冲击效应对简支板的影响[J].中国科技论文在线,2010,5(7):516-521. MI Jing, LIU Yong-jian, LIU Jian. Impact influence of vehicle-bridge coupled vibration on simply-supported slab[J]. Science-paper Online, 2010, 5(7): 516-521.(in Chinese)
[12]  GB/T 7031―1986,车辆振动输入 路面平度表示方法[S]. GB/T 7031―1986, vehicle vibration-describing method for road surface irregularity[S].(in Chinese)
[13]  施 颖,宋一凡,孙 慧,等.基于ANSYS的公路复杂桥梁车桥耦合动力分析方法[J].天津大学学报,2010,43(6):537-543. SHI Ying, SONG Yi-fan, SUN Hui, et al. Dynamic analysis method of vehicle-bridge coupling for complicated bridges based on ANSYS[J]. Journal of Tianjin University, 2010, 43(6): 537-543.(in Chinese)
[14]  李德建,彭 彦.既有简支铰接空心板梁桥结构状况动力评估[J].建筑科学与工程学报,2009,26(4):24-29. LI De-jian, PENG Yan. Dynamic assessment about existing simply-supported hinge joint celluar slab bridges[J]. Journal of Architecture and Civil Engineering, 2009, 26(4): 24-29.(in Chinese)
[15]  JTG D60―2004,公路桥涵设计通用规范[S]. JTG D60―2004, general code for design of highway bridges and culverts[S].(in Chinese)

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