高速列车车轮型面磨耗对轨道、桥梁振动特性影响分析
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摘要
以国产某型号动车组、CRTSⅢ无砟轨道和32 m标准箱型简支梁为对象,基于列车-轨道-桥梁耦合动力学和固定界面模态综合法理论,利用多体动力学软件UM与ANSYS、HYPERMESH联合仿真的方法,建立三维车线桥耦合动力学精细模型,采用轮轨非椭圆多点接触算法。在数值算例中,以列车通过3跨简支梁桥为计算背景,分析不同里程、速度下的车轮型面对轨道、桥梁结构振动特性的影响;结果表明:车轮型面磨耗对轨道、桥梁结构的振动特性:横向受到的影响大于垂向。横向振动响应指标随着车轮型面磨耗增加,逐渐增大;同时会造成轨道、桥梁振动主频发生偏移,幅值异常,对结构的中高频阶影响更大。建议轨道、桥梁结构设计过程中,考虑轮轨型面发生变化后的影响,减小轮轨型面变化对轨道、桥梁结构造成的影响。
Taking a certain type of domestic EMU, CRTS III ballast-less track and a 32 m long simply supported girder bridge as the study object, based on the theory of train-track-bridge coupled dynamics and the fixed-interface modal synthesis method, using the joint simulation method with the multi-body dynamic software UM and the software ANSYS and HYPERMESH, a 3 D train-track-bridge coupled dynamic sophisticated model was established to perform numerical simulation adopting the non-elliptic multi-point wheel/rail contact algorithm. In numerical example, taking a high-speed train passing through a 3-span simply supported girder bridge as the computation background, effects of wheel wear on vibration characteristics of track and bridge structure under different mileages and speeds were analyzed. The results showed that effects of wheel wear on transverse vibration characteristics of track and bridge structure are larger than those on vertical ones; transverse vibration response index increases with increase in wheel wear; transverse vibration response causes the main vibration frequencies of track and bridge to drift and their vibration amplitude to be abnormal; wheel wear affects structure's middle and high order vibration frequencies more significantly, so the effects of wheel/rail profile changes should be considered in designs of track and bridge structure to reduce these effects.
Taking a certain type of domestic EMU, CRTS III ballast-less track and a 32 m long simply supported girder bridge as the study object, based on the theory of train-track-bridge coupled dynamics and the fixed-interface modal synthesis method, using the joint simulation method with the multi-body dynamic software UM and the software ANSYS and HYPERMESH, a 3 D train-track-bridge coupled dynamic sophisticated model was established to perform numerical simulation adopting the non-elliptic multi-point wheel/rail contact algorithm. In numerical example, taking a high-speed train passing through a 3-span simply supported girder bridge as the computation background, effects of wheel wear on vibration characteristics of track and bridge structure under different mileages and speeds were analyzed. The results showed that effects of wheel wear on transverse vibration characteristics of track and bridge structure are larger than those on vertical ones; transverse vibration response index increases with increase in wheel wear; transverse vibration response causes the main vibration frequencies of track and bridge to drift and their vibration amplitude to be abnormal; wheel wear affects structure's middle and high order vibration frequencies more significantly, so the effects of wheel/rail profile changes should be considered in designs of track and bridge structure to reduce these effects.
引文
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[15] TAO G,WEN Z,ZHAO X,et al.Effects of wheel-rail contact modelling on wheel wear simulation[J].Wear,2016,366/367:146-156.
[16] 朱志辉,程玉莹,龚威,等.列车动力荷载作用下大跨度斜拉桥局部振动响应研究[J].振动与冲击,2017,36(22):6-13.ZHU Zhihui,CHEN Yuying,GONG Wei,et al.Research on local vibration of long-span cable-stayed bridges induced by train load[J].Journal of Vibration and Shock,2017,36(22):6-13.
[2] 翟婉明,夏禾.列车-轨道-桥梁动力相互作用理论与工程应用[M].北京:科学出版社,2011.
[3] ZHAI Wanming,XIA He,CAI Chengbiao,et al.High-speed train-track-bridge dynamic interactions—Part I:theoretical model and numerical simulation[J].International Journal of Rail Transportation,2013,1(1/2):3-24.
[4] 崔圣爱,刘品,曹艺缤,等.多线铁路车桥耦合振动仿真研究[J].西南交通大学学报,2017,52(5):835-843.CUI Sheng’ai,LIU Pin,CAO Yibin,et al.Simulation study on mutiline vehicle-bridge coupled vibration[J].Journal of Southwest Jiaotong University,2017,52(5):835-843.
[5] MATSUOKA K,COLLINA A,SOGABE M,et al.Dynamic simulation and critical assessment of a composite bridge in high-speed railway[J].Procedia Engineering,2017,199:3027-3032.
[6] 徐昕宇,李永乐,陈科宇,等.多线铁路桥双车交会的风-车-桥耦合振动研究[J].桥梁建设,2017,47(1):41-46.XU Xinyu,LI Yongle,CHEN Keyu,at al.Study of wind-train-bridge coupling vibration of multi-track railway bridge under meeting of two trains[J].Bridge Construction,2017,47(1):41-46.
[7] ZHAI Wanming,LIU Pengfei,LIN Jianhui,et al.Experimental investigation on vibration behaviour of a CRH train at speed of 350 km/h[J].Neuroscience,2015,3(1):1-16.
[8] 朱志辉,王力东,龚威,等.多种垂向轮轨关系的对比及改进的车-线-桥系统迭代模型的建立[J].中南大学学报(自然科学版),2017(6):1585-1593.ZHU Zhihui,WANG Lidong,GONG Wei,et al.Comparative analysis of several types of vertical wheel/rail relationship and construction of an improved iteration model for train-track-bridge system[J].Journal of Central South University (Science and Technology),2017(6):1585-1593.
[9] 林玉森,李小珍,强士中.车桥耦合振动中2种轮轨接触模型的比较分析[J].中国铁道科学,2007,28(6):70-74.LIN Yusen,LI Xiaozhen,QIANG Shizhong.Contrast analysis of two wheel/rail contact models in the coupling vibration of vehicle-bridge system[J].China Railway Science,2007,28(6):70-74.
[10] 崔圣爱,祝兵,黄志堂.不同轮轨接触模型在车桥耦合振动中的比较[J].应用力学学报,2010,27(1):63-67.CUI Sheng’ai,ZHU Bing,HUANG Zhitang.Comparative analysis of different wheel/rail contact models in vehicle and bridge coupled vibration[J].Chinese Journal of Applied Mechanics,2010,27(1):63-67.
[11] 吴宇鹏,刘林芽,李纪阳.不同轮轨型面匹配对车桥耦合系统振动的影响[J].铁道建筑,2015(12):22-25.WU Yupeng,LIU Linya,LI Jiyang.Influence of different wheel-rail profile match on vehicle-bridge system coupled vibration[J].Railway Engineering,2015(12):22-25.
[12] 李小珍,雷虎军,朱艳.车-轨-桥动力系统中Rayleigh阻尼参数分析[J].振动与冲击,2013,32(21):52-57.LI Xiaozhen,LEI Hujun,ZHU Yan.Analysis of Rayleigh damping parameters in a dynamic system of vehicle-track-bridge[J].Journal of Vibration and Shock,2013,32(21):52-57.
[13] ROY CRAIG J.Coupling of substructures for dynamic analyses-an overview[C]// Structures,Structural Dynamics,and Materials Conference and Exhibit.Atlanta,2013.
[14] SICHANI M S,ENBLOM R,BERG M.Comparison of non-elliptic contact models:towards fast and accurate modelling of wheel-rail contact[J].Wear,2014,314(1/2):111-117.
[15] TAO G,WEN Z,ZHAO X,et al.Effects of wheel-rail contact modelling on wheel wear simulation[J].Wear,2016,366/367:146-156.
[16] 朱志辉,程玉莹,龚威,等.列车动力荷载作用下大跨度斜拉桥局部振动响应研究[J].振动与冲击,2017,36(22):6-13.ZHU Zhihui,CHEN Yuying,GONG Wei,et al.Research on local vibration of long-span cable-stayed bridges induced by train load[J].Journal of Vibration and Shock,2017,36(22):6-13.