列车制动下铁路斜拉桥梁轨动力相互作用研究
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摘要
运用ANSYS软件建立某大跨度铁路斜拉桥梁轨相互作用有限元模型,进行列车制动力作用下的梁轨动力响应分析,研究梁轨相对位移及钢轨制动附加力的动力放大效应以及制动力作用位置、制动距离、斜拉桥结构体系等参数对梁轨动力响应的影响。结果表明:列车制动过程中,钢轨制动附加力峰值产生于斜拉桥梁端;斜拉桥结构在列车制动作用下的动力放大效应并不明显;制动力作用位置、斜拉桥结构体系对梁轨动力响应峰值有较大的影响,而制动距离对动力响应计算结果的影响不大。
The finite element model for the beam-track interaction of a long-span railway cable-stayed bridge was established by using ANSYS software.The dynamic response of beam and track under train braking force was analyzed.The dynamic magnification effects of beam-track relative displacement and additional rail braking force were studied,and the influence of such parameters as braking force position,braking distance and the structural system of cable-stayed bridge on beam-track dynamic response was analyzed.Results show that,in the process of train braking,the peak value of the additional force of rail braking occurs at the beam-ends of cable-stayed bridge.The dynamic magnification effect of cable-stayed bridge under train braking is not obvious.The braking force position and the structural system of cablestayed bridge have great influence on the peak value of beam-track dynamic response,while the braking distance has little effect on the calculation results of dynamic response.
The finite element model for the beam-track interaction of a long-span railway cable-stayed bridge was established by using ANSYS software.The dynamic response of beam and track under train braking force was analyzed.The dynamic magnification effects of beam-track relative displacement and additional rail braking force were studied,and the influence of such parameters as braking force position,braking distance and the structural system of cable-stayed bridge on beam-track dynamic response was analyzed.Results show that,in the process of train braking,the peak value of the additional force of rail braking occurs at the beam-ends of cable-stayed bridge.The dynamic magnification effect of cable-stayed bridge under train braking is not obvious.The braking force position and the structural system of cablestayed bridge have great influence on the peak value of beam-track dynamic response,while the braking distance has little effect on the calculation results of dynamic response.
引文
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[18]阴存欣.铁路桥梁在列车纵向制动作用下的动力反应分析[J].中国铁道科学,2000,21(2):8-18.(YIN Cunxin.Dynamic Analysis of Railway Bridge Response to Longitudinal Braking Force[J].China Railway Science,2000,21(2):8-18.in Chinese)
[19]黄问盈,杨宁清,黄民.我国铁道列车紧急制动距离限值标准的探讨[J].中国铁道科学,2003,24(5):84-90.(HUANG Wenying,YANG Ningqing,HUANG Min.Standard of Railway Train Emergency Braking Distance Limit in China[J].China Railway Science,2003,24(5):84-90.in Chinese)
[2]卜一之,张进.高速铁路桥梁有效制动力初探[J].四川建筑,1996,5(16):21-23.(BU Yizhi,ZHANG Jin.Discussion on Effective Braking Force of High Speed Railway Bridge[J].Sichuan Architecture,1996,5(16):21-23.in Chinese)
[3]曹雪琴,朱金龙.城市轨道交通桥梁纵向制动力传递分析[J].中国铁道科学,2004,25(4):74-80.(CAO Xueqin,ZHU Jinlong.Analysis of the Distribution of Longitudinal Brake Force on Urban Mass Transit Bridge[J].China Railway Science,2004,25(4):74-80.in Chinese)
[4]曲村,高亮,侯博文.城市轨道交通长大桥梁上无缝线路钢轨制动力研究[J].城市轨道交通研究,2012,15(10):66-70.(QU Cun,GAO Liang,HOU Bowen.Study on the Rail Braking Force of Continuous Welded Rail on Long-Span Bridge in Urban Rail Transit[J].Urban Mass Transit,2012,15(10):66-70.in Chinese)
[5]瞿伟廉,李海峰,刘嘉.列车制动力仿真的程序实现技术[J].武汉理工大学学报,2007,29(7):82-84.(QU Weilian,LI Haifeng,LIU Jia.Technology to Implement the Simulation Program of Braking Force[J].Journal of Wuhan University of Technology,2007,29(7):82-84.in Chinese)
[6]秦顺全.武汉天兴洲公铁两用长江大桥关键技术研究[J].工程力学,2008,25(增2):99-105.(QIN Shunquan.Key Technology of Tianxingzhou Yangtze River Bridge[J].Engineering Mechanics,2008,25(Supplement 2):99-105.in Chinese)
[7] FRYBA L.Quasi-Static Distribution of Braking and Starting Forces in Rails and Bridge[J].Rail International,1974,5(11):698-716.
[8] KISHAN H,TRAILL-Nash R W.A Modal Method for Calculation of Highway Bridge Response with Vehicle Braking[J].Civil Engineering Transactions,1977,19(1):44-50.
[9] KRYLOV V V.Generation of Ground Vibrations by Accelerating and Braking Road Vehicles[J].Acustica,1996,82(4):642-649.
[10] TOTH J,RUGE P.Spectral Assessment of Mesh Adaptations for the Analysis of the Dynamical Longitudinal Behavior of Rai1way Bridges[J].Archive of Applied Mechanics,2001,71(6/7):453-462.
[11] TOAN Xuan Nguyen,DUC Van Tran.A Finite Element Model of Vehicle-Cable Stayed Bridge Interaction Considering Braking and Acceleration[C]//The 2014 World Congress on Advances in Civil,Environmental,and Materials Research.Busan Korea:Techno Press,2014.
[12]李宏年.铁路桥梁轨面制动力的动态研究[J].铁道学报,1994,16(3):112-117.(LI Hongnian.Dynamic Study of Braking Force of Railway Bridge[J].Journal of the China Railway Society,1994,16(3):112-117.in Chinese)
[13]李宏年,朱晞,于新杰.PC简支梁铁路桥制动力有效系数的研究[J].土木工程学报,2000,33(3):22-26.(LI Hongnian,ZHU Xi,YU Xinjie.Research on Effective Coefficient of Braking Force of Simply Supported PCBeam Railway Bridges[J].China Civil Engineering Journal,2000,33(3):22-26.in Chinese)
[14]雷俊卿,李宏年,冯东.铁路桥梁列车制动力的试验研究与计算分析[J].工程力学,2006,23(3):134-140.(LEI Junqing,LI Hongnian,FENG Dong.Experimental Study and Computational Analysis on Braking Force between Running Train and Railway Bridge[J].Engineering Mechanics,2006,23(3):134-140.in Chinese)
[15]阴存欣.铁路桥梁纵向附加力的静动力非线性分析与仿真研究[D].北京:铁道部科学研究院,2001.(YIN Cunxin.Study on Nonlinear Static and Dynamic Analysis of Additional Longitudinal Forces in Railway Bridges[D].Beijing:China Academy of Railway Sciences,2001.in Chinese)
[16] International Union of Railways.Code 774-3 Track/Bridge Interaction Recommendations for Calculations[S].Paris:International Union of Railways,2001.
[17]徐庆元.高速铁路桥上无缝线路纵向附加力三维有限元静力与动力分析研究[D].长沙:中南大学,2005.(XU Qingyuan.3DFinite Element Static and Dynamic Analysis of Longitudinal Additional Forces of CWR on High Speed Railway Bridges[D].Changsha:Central South University,2005.in Chinese)
[18]阴存欣.铁路桥梁在列车纵向制动作用下的动力反应分析[J].中国铁道科学,2000,21(2):8-18.(YIN Cunxin.Dynamic Analysis of Railway Bridge Response to Longitudinal Braking Force[J].China Railway Science,2000,21(2):8-18.in Chinese)
[19]黄问盈,杨宁清,黄民.我国铁道列车紧急制动距离限值标准的探讨[J].中国铁道科学,2003,24(5):84-90.(HUANG Wenying,YANG Ningqing,HUANG Min.Standard of Railway Train Emergency Braking Distance Limit in China[J].China Railway Science,2003,24(5):84-90.in Chinese)