大跨系杆拱桥上道岔纵向耦合及列车走行性分析
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摘要
针对大跨系杆拱桥上铺设无缝道岔的工程需求,根据岔-桥相互作用原理和列车-道岔-桥梁耦合动力学原理,分别建立了纵向耦合与垂横向耦合振动仿真分析模型.以某新建客专205 m连续梁桥为例,结合3种桥型共9种布置方案,对其岔桥耦合特性和列车走行性进行综合分析研究,结果表明:温度跨度对此类桥上无缝道岔纵向受力变形影响较大,不同桥跨形式的伸缩附加力规律相同,大小不同,其中尼尔森刚架拱方案伸缩附加力、道岔尖轨尖端和心轨尖端相对基本轨的位移、钢轨断缝的最值最小,大跨连续梁拱桥最大;就大跨系杆拱桥上无缝道岔而言,转辙机处基本轨与桥梁相对位移是影响桥垮选型的重要因素;尼尔森拱桥因主跨跨度较大导致桥梁动位移相对较大,存在轮重减载率瞬时超限的问题,而小跨连续梁拱桥梁动位移仅1.33 mm,列车走行安全性和舒适性表现良好,车体横向振动加速度最大仅0.035g.
To meet the engineering requirements of laying welded turnouts on tied arch bridges,the longitudinal and lateral-vertical coupling vibration models were built based on the interaction principles of turnout-bridge and coupling dynamics of vehicle-turnout-bridge. Taking an example of a 205 m continuous beam bridge on a new passenger dedicated line,three bridge types and nine kinds of layouts in total were involved to analyze the coupling characteristics of the turnout-bridge system and vehicle running performance. The turnout-bridge longitudinal interaction shows that the temperature span has a great influence on the longitudinal deformation of the welded turnouts. And the disciplines of rail additional expansion and contraction forces of different bridge types are the same,but the force values are different. For the Neilson rigid-frame arch bridge plans,the rail additional expansion andcontraction forces, relative displacements between the tip of switch rail and stock rail, relative displacements between the tip of nose rail and stock rail,and rail break are all minimum. However,for the large-span continuous beam-arch bridges,the corresponding values are maximum. As to laying welded turnouts on tied arch bridges,the relative displacement between the stock rail at switch machine and bridge is an important factor in selecting the optimal plan. The vehicle running performance analysis shows that the vertical dynamic displacement of Neilson rigid-frame arch bridge is relatively large,and the rate of wheel load reduction exceeds the limit in an instant. In contrast,for the small-span continuous beam bridge,the dynamic displacement is only 1. 33 mm,vehicles have a good running performance in safety and comfort,and the maximum lateral acceleration of the car body is only 0. 035 g.
To meet the engineering requirements of laying welded turnouts on tied arch bridges,the longitudinal and lateral-vertical coupling vibration models were built based on the interaction principles of turnout-bridge and coupling dynamics of vehicle-turnout-bridge. Taking an example of a 205 m continuous beam bridge on a new passenger dedicated line,three bridge types and nine kinds of layouts in total were involved to analyze the coupling characteristics of the turnout-bridge system and vehicle running performance. The turnout-bridge longitudinal interaction shows that the temperature span has a great influence on the longitudinal deformation of the welded turnouts. And the disciplines of rail additional expansion and contraction forces of different bridge types are the same,but the force values are different. For the Neilson rigid-frame arch bridge plans,the rail additional expansion andcontraction forces, relative displacements between the tip of switch rail and stock rail, relative displacements between the tip of nose rail and stock rail,and rail break are all minimum. However,for the large-span continuous beam-arch bridges,the corresponding values are maximum. As to laying welded turnouts on tied arch bridges,the relative displacement between the stock rail at switch machine and bridge is an important factor in selecting the optimal plan. The vehicle running performance analysis shows that the vertical dynamic displacement of Neilson rigid-frame arch bridge is relatively large,and the rate of wheel load reduction exceeds the limit in an instant. In contrast,for the small-span continuous beam bridge,the dynamic displacement is only 1. 33 mm,vehicles have a good running performance in safety and comfort,and the maximum lateral acceleration of the car body is only 0. 035 g.
引文
[1]GAO L,QU C,QIAO S L,et al.Analysis on the influencing factors of mechanical characteristics of jointless turnout group in ballasted track of high-speed railway[J].Science China Technological Sciences,2013,56(2):499-508.
[2]杨荣山,刘学毅,王平.桥上无缝道岔纵向力计算理论与试验研究[J].铁道学报,2010,32(4):134-140.YANG Rongshan,LIU Xueyi,WANG Ping.Research on longitudinal force computation theory and ex-periment of welded turnout on bridge[J].The China Railway Society,2010,32(4):134-140.
[3]任娟娟,王平,刘学毅.客运专线桥上纵连式无砟道岔伸缩力与位移影响因素分析[J].铁道学报,2011,33(2):79-85.REN Juanjuan,WANG Ping,LIU Xueyi.Influencing factors of temperature force and displacement of longitudinally coupled ballastless welded turnout on bridges of dedicated passenger lines[J].The China Railway Society,2011,33(2):79-85.
[4]王平,刘学毅.无缝道岔受力与变形的影响因素分析[J].中国铁道科学,2003,24(2):61-69.WANG Ping,LIU Xueyi.Analysis of the influences of some parameters on the longitudinal force and rail displacement of CWR turnout[J].China Railway Science,2003,24(2):61-69.
[5]王平,杨荣山,刘学毅.无缝道岔铺设于长大连续梁桥上时的受力与变形分析[J].交通运输工程与信息学报,2004,2(3):16-21.WANG Ping,YANG Rongshan,LIU Xueyi.Analysis on the influence of seamless turnout on large con-tinuous bridge[J].Transportation Engineering and Information,2004,2(3):16-21.
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[7]朱敏,王玉玨,杨咏漪,等.铁路系杆拱桥设计研究[J].铁道工程学报,2009(10):33-36.ZHU Min,WANG Yujue,YANG Yongyi,et al.Research on the design of railway tied arch bridge[J].Railway Engineering Society,2009(10):33-36.
[8]乔建东,吴慧山,杨伟.混凝土系杆拱桥优化设计[J].西南交通大学学报,2015,50(2):300-305.QIAO Jiandong,WU Huishan,YANG Wei.Optimal design of concrete tied arch bridge[J].Journal of Southwest Jiaotong University,2015,50(2):300-305.
[9]赵会涛.大跨度拱桥的结构选型[D].成都:西南交通大学,2009.
[10]徐井芒,刘丹,王平.大跨度尼尔森体系钢箱提篮拱桥桥上无缝线路计算分析[J].铁道建筑,2011(11):122-124.XU Jingmang,LIU Dan,WANG Ping.CWR calculation and analysis of long-span x-arch bridge of steel box girder Nielsen system[J].Railway Engineering,2011(11):122-124.
[11]刘文兵.大跨度提篮拱桥上无缝线路设计关键技术研究[J].铁道工程学报,2009(6):67-70.LIU Wenbing.Research on the key technologies for design of continuous welded rails(CWR)on largespan basket handle arch bridge[J].Railway Engineering Society,2009(6):67-70.
[12]尹邦武,杨峰,郭向荣,等.温度变形对大跨度钢箱系杆拱桥车桥动力响应的影响[J].铁道科学与工程学报,2013,10(6):21-27.YIN Bangwu,YANG Feng,GUO Xiangrong,et al.Influence of temperature deformation on vehicle-bridge dynamic response of long-span steel box-girder tiedarch bridge[J].Railway Science and Engineering,2013,10(6):21-27.
[13]CHEN Rong,WANG Ping,WEI Xiankui.Trackbridge longitudinal interaction of continuous welded rails on arch bridge[J].Mathematical Problems in Engineering,2013(3):237-245.
[14]RUGE P,BIRK C.Longitudinal forces in continuously welded rails on bridgedecks due to nonlinear track bridge interaction[J].Computers&Structures,2007,85(7):458-475.
[15]CALCADA R,DELGADO R,GABALDON F,et al.Track-bridge interaction on high-speed railways[M].London:Taylor&Francis Group,2009:149-164.
[16]陈嵘.高速铁路车辆-道岔-桥梁耦合振动理论及应用研究[D].成都:西南交通大学,2009.
[17]朱志辉,朱玉龙,余志武,等.96 m钢箱系杆拱桥动力响应及行车安全性分析[J].中国铁道科学,2013,34(6):21-29.ZHU Zhihui,ZHU Yulong,YU Zhiwu et al.Analysis on the dynamic response and running safety of 96 m steel box tied arch bridge[J].China Railway Science,2013,34(6):21-29.
[18]LACARBONARA W,COLONE V.Dynamic response of arch bridges traversed by high-speed trains[J].Journal of Sound and Vibration,2007,304(1):72-90.
[19]雷虎军,李小珍.拟静力分量对列车-轨道-桥梁系统地震响应的影响[J].西南交通大学学报,2015,50(1):124-130,136.LEI Hujun,LI Xiaozhen.Effects of structural quasistatic components on seismic responses of train-trackbridge system[J].Journal of Southwest Jiaotong University,2015,50(1):124-130,136.
[20]侯博文,高亮,刘启宾.重载车辆-道岔耦合动力特性及岔区加强研究[J].西南交通大学学报,2015,50(4):604-609.HOU Bowen,GAO Liang,LIU Qibin.Vehicle-turnout coupled dynamics and improvement measures for heavy haul lines[J].Journal of Southwest Jiaotong University,2015,50(4):604-609.
[21]闫斌.高速铁路中小跨度桥梁与轨道相互作用研究[D].长沙:中南大学,2013.
[22]陈鹏,高亮,冯雅薇,等.连续梁桥上无缝线路纵向附加力的变化规律[J].北京交通大学学报,2007,31(1):85-88.CHEN Peng,GAO Liang,FENG Yawei,et al.Variety rules of additional longitudinal force of continuously welded rails on bridge with continuous beam[J].Journal of Beijing Jiaotong University,2007,31(1):85-88.
[23]乔神路.高速铁路桥上无砟道岔系统空间精细化设计理论及试验研究[D].北京:北京交通大学,2014.
[24]代先星,王平,刘婷林,等.桥上无缝线路钢轨断缝值影响因素研究[J].铁道标准设计,2013(11):11-15.DAI Xianxing,WANG Ping,LIU Tinglin,et al.Study on thefactors affecting the rail broken gap of continuous welded rail on bridge[J].Railway Standard Design,2013(11):11-15.
[2]杨荣山,刘学毅,王平.桥上无缝道岔纵向力计算理论与试验研究[J].铁道学报,2010,32(4):134-140.YANG Rongshan,LIU Xueyi,WANG Ping.Research on longitudinal force computation theory and ex-periment of welded turnout on bridge[J].The China Railway Society,2010,32(4):134-140.
[3]任娟娟,王平,刘学毅.客运专线桥上纵连式无砟道岔伸缩力与位移影响因素分析[J].铁道学报,2011,33(2):79-85.REN Juanjuan,WANG Ping,LIU Xueyi.Influencing factors of temperature force and displacement of longitudinally coupled ballastless welded turnout on bridges of dedicated passenger lines[J].The China Railway Society,2011,33(2):79-85.
[4]王平,刘学毅.无缝道岔受力与变形的影响因素分析[J].中国铁道科学,2003,24(2):61-69.WANG Ping,LIU Xueyi.Analysis of the influences of some parameters on the longitudinal force and rail displacement of CWR turnout[J].China Railway Science,2003,24(2):61-69.
[5]王平,杨荣山,刘学毅.无缝道岔铺设于长大连续梁桥上时的受力与变形分析[J].交通运输工程与信息学报,2004,2(3):16-21.WANG Ping,YANG Rongshan,LIU Xueyi.Analysis on the influence of seamless turnout on large con-tinuous bridge[J].Transportation Engineering and Information,2004,2(3):16-21.
[6]中华人民共和国铁道部.TB10015—2013铁路无缝线路设计规范[S].北京:中国铁道出版社,2013.
[7]朱敏,王玉玨,杨咏漪,等.铁路系杆拱桥设计研究[J].铁道工程学报,2009(10):33-36.ZHU Min,WANG Yujue,YANG Yongyi,et al.Research on the design of railway tied arch bridge[J].Railway Engineering Society,2009(10):33-36.
[8]乔建东,吴慧山,杨伟.混凝土系杆拱桥优化设计[J].西南交通大学学报,2015,50(2):300-305.QIAO Jiandong,WU Huishan,YANG Wei.Optimal design of concrete tied arch bridge[J].Journal of Southwest Jiaotong University,2015,50(2):300-305.
[9]赵会涛.大跨度拱桥的结构选型[D].成都:西南交通大学,2009.
[10]徐井芒,刘丹,王平.大跨度尼尔森体系钢箱提篮拱桥桥上无缝线路计算分析[J].铁道建筑,2011(11):122-124.XU Jingmang,LIU Dan,WANG Ping.CWR calculation and analysis of long-span x-arch bridge of steel box girder Nielsen system[J].Railway Engineering,2011(11):122-124.
[11]刘文兵.大跨度提篮拱桥上无缝线路设计关键技术研究[J].铁道工程学报,2009(6):67-70.LIU Wenbing.Research on the key technologies for design of continuous welded rails(CWR)on largespan basket handle arch bridge[J].Railway Engineering Society,2009(6):67-70.
[12]尹邦武,杨峰,郭向荣,等.温度变形对大跨度钢箱系杆拱桥车桥动力响应的影响[J].铁道科学与工程学报,2013,10(6):21-27.YIN Bangwu,YANG Feng,GUO Xiangrong,et al.Influence of temperature deformation on vehicle-bridge dynamic response of long-span steel box-girder tiedarch bridge[J].Railway Science and Engineering,2013,10(6):21-27.
[13]CHEN Rong,WANG Ping,WEI Xiankui.Trackbridge longitudinal interaction of continuous welded rails on arch bridge[J].Mathematical Problems in Engineering,2013(3):237-245.
[14]RUGE P,BIRK C.Longitudinal forces in continuously welded rails on bridgedecks due to nonlinear track bridge interaction[J].Computers&Structures,2007,85(7):458-475.
[15]CALCADA R,DELGADO R,GABALDON F,et al.Track-bridge interaction on high-speed railways[M].London:Taylor&Francis Group,2009:149-164.
[16]陈嵘.高速铁路车辆-道岔-桥梁耦合振动理论及应用研究[D].成都:西南交通大学,2009.
[17]朱志辉,朱玉龙,余志武,等.96 m钢箱系杆拱桥动力响应及行车安全性分析[J].中国铁道科学,2013,34(6):21-29.ZHU Zhihui,ZHU Yulong,YU Zhiwu et al.Analysis on the dynamic response and running safety of 96 m steel box tied arch bridge[J].China Railway Science,2013,34(6):21-29.
[18]LACARBONARA W,COLONE V.Dynamic response of arch bridges traversed by high-speed trains[J].Journal of Sound and Vibration,2007,304(1):72-90.
[19]雷虎军,李小珍.拟静力分量对列车-轨道-桥梁系统地震响应的影响[J].西南交通大学学报,2015,50(1):124-130,136.LEI Hujun,LI Xiaozhen.Effects of structural quasistatic components on seismic responses of train-trackbridge system[J].Journal of Southwest Jiaotong University,2015,50(1):124-130,136.
[20]侯博文,高亮,刘启宾.重载车辆-道岔耦合动力特性及岔区加强研究[J].西南交通大学学报,2015,50(4):604-609.HOU Bowen,GAO Liang,LIU Qibin.Vehicle-turnout coupled dynamics and improvement measures for heavy haul lines[J].Journal of Southwest Jiaotong University,2015,50(4):604-609.
[21]闫斌.高速铁路中小跨度桥梁与轨道相互作用研究[D].长沙:中南大学,2013.
[22]陈鹏,高亮,冯雅薇,等.连续梁桥上无缝线路纵向附加力的变化规律[J].北京交通大学学报,2007,31(1):85-88.CHEN Peng,GAO Liang,FENG Yawei,et al.Variety rules of additional longitudinal force of continuously welded rails on bridge with continuous beam[J].Journal of Beijing Jiaotong University,2007,31(1):85-88.
[23]乔神路.高速铁路桥上无砟道岔系统空间精细化设计理论及试验研究[D].北京:北京交通大学,2014.
[24]代先星,王平,刘婷林,等.桥上无缝线路钢轨断缝值影响因素研究[J].铁道标准设计,2013(11):11-15.DAI Xianxing,WANG Ping,LIU Tinglin,et al.Study on thefactors affecting the rail broken gap of continuous welded rail on bridge[J].Railway Standard Design,2013(11):11-15.