厦深铁路榕江特大桥主桥车-桥耦合振动分析
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摘要
厦深铁路榕江特大桥主桥为(110+2×220+110)m下承式大跨度刚性桁梁柔性拱组合体系桥。为了解其在设计时速下车-桥系统的动力性能,基于ANSYS软件建立全桥有限元模型,分析其自振特性,采用SIMPACK和ANSYS联合数值仿真分析方法,计算CRH2动车组列车运行时桥梁和列车组的动力响应,并与现场实测值和规范限值进行对比,评价该桥在列车设计时速下车-桥系统的安全性和舒适性。结果表明:双线行车可有效减小桥梁跨中的横向振动,但对列车响应的影响很小;车速250km/h时桥梁各动力响应值均大于车速220km/h时的值,且均满足规范限值;在各工况下,列车组的车辆脱轨系数、轮重减载率、轮轴横向力和车体加速度均小于标准限值,舒适性指标均为优或良,列车运行安全性和舒适性满足规范要求。
The main bridge of the Rongjiang River Bridge on Xiamen-Shenzhen Railway is a long span through hybrid system bridge of rigid steel truss girder and flexible arches with span arrangement(110+2×220+110)m.To understand the dynamic performance of the train-bridge system of the bridge at the designed train speeds,the software ANSYS was used to set up the finite element model for the whole bridge of the bridge and the natural vibration characteristics of the bridge were analyzed.The combined numerical simulation analysis method of the SIMPACK and ANSYS was also used to calculate the dynamic responses of the trains and bridge under the traveling of the CRH2 EMU trains,the calculation values were compared to the field measurement values and the values as provided in the codes and the safety and riding comfort of the train-bridge system of the bridge under the designed train speeds were evaluated.The results show that the traveling of the trains on the double tracks can effectively reduce the lateral vibration at the midspans of the bridge,however,the influences of the traveling of the trains on the train responses are little.At the train speed of 250km/h,the response values of the bridge are all greater than the values of the bridge at the train speed of 220km/h and can satisfy the relevant requirements in the codes.Under the different load cases,the values of the derailment coefficients,wheel load reduction rates,wheel axis lateral forces and body acceleration of the trains are all less than the standard limit values,the indices of the riding comfort are excellent or good and the train traveling safety and the riding comfort can satisfy the requirements in the codes.
The main bridge of the Rongjiang River Bridge on Xiamen-Shenzhen Railway is a long span through hybrid system bridge of rigid steel truss girder and flexible arches with span arrangement(110+2×220+110)m.To understand the dynamic performance of the train-bridge system of the bridge at the designed train speeds,the software ANSYS was used to set up the finite element model for the whole bridge of the bridge and the natural vibration characteristics of the bridge were analyzed.The combined numerical simulation analysis method of the SIMPACK and ANSYS was also used to calculate the dynamic responses of the trains and bridge under the traveling of the CRH2 EMU trains,the calculation values were compared to the field measurement values and the values as provided in the codes and the safety and riding comfort of the train-bridge system of the bridge under the designed train speeds were evaluated.The results show that the traveling of the trains on the double tracks can effectively reduce the lateral vibration at the midspans of the bridge,however,the influences of the traveling of the trains on the train responses are little.At the train speed of 250km/h,the response values of the bridge are all greater than the values of the bridge at the train speed of 220km/h and can satisfy the relevant requirements in the codes.Under the different load cases,the values of the derailment coefficients,wheel load reduction rates,wheel axis lateral forces and body acceleration of the trains are all less than the standard limit values,the indices of the riding comfort are excellent or good and the train traveling safety and the riding comfort can satisfy the requirements in the codes.
引文
[1]张杰.厦深铁路榕江桥主桥设计及优化[J].铁道建筑,2011(2):29-32.(ZHANG Jie.Design and Optimization of Main Bridge of Rongjiang River Bridge on Xiamen-Shenzhen Railway[J].Railway Engineering,2011(2):29-32.in Chinese)
[2]蔡禄荣,李家茂,王钰,等.榕江特大桥悬拼架设临时加强措施设计[J].桥梁建设,2012,42(1):90-95.(CAI Lu-rong,LI Jia-mao,WANG Yu,et al.Design of Temporary Stiffening Measures for Cantilever Assembling and Erection of Rongjiang River Bridge[J].Bridge Construction,2012,42(1):90-95.in Chinese)
[3]王钰.厦深铁路榕江特大桥列车运行稳定性试验研究[J].铁道科学与工程学报,2014,11(5):41-45.(WANG Yu.Test Research on Stability of Running Trains on Rongjiang River Bridge on Xiamen-Shenzhen Railway[J].Journal of Railway Science and Engineering,2014,11(5):41-45.in Chinese)
[4]鄢怀斌,周云,李慧明.厦深铁路榕江特大桥主桥连续钢桁梁柔性拱施工关键技术[J].世界桥梁,2014,42(4):6-9.(YAN Huai-bin,ZHOU Yun,LI Hui-ming.Key Construction Techniques for Continuous Steel Truss Girder and Flexible Arches of Main Bridge of Rongjiang River Bridge on Xiamen-Shenzhen Railway[J].World Bridges,2014,42(4):6-9.in Chinese)
[5]杨云,沈青川.厦深铁路榕江特大桥连续钢桁梁柔性拱组合桥成桥静、动载试验及结构性能研究[J].铁道科学与工程学报,2014,11(4):19-25.(YANG Yun,SHEN Qing-chuan.Static and Dynamic Loading Tests and Structural Behavior Analysis for Completed Rongjiang River Bridge with Continuous Steel Truss and Flexible Arches on Xiamen-Shenzhen Railway[J].Journal of Railway Science and Engineering,2014,11(4):19-25.in Chinese)
[6]朱伟,戚铁,贾亮.基于SIMPACK的钢桁梁斜拉桥车-桥系统动力性能分析[J].铁道标准设计,2014,58(7):89-94.(ZHU Wei,QI Tie,JIA Liang.Dynamic Performance Analysis of Vehicle-Bridge System for a Cable-Stayed Bridge with Steel Truss Girder Based on SIMPACK[J].Railway Standard Design,2014,58(7):89-94.in Chinese)
[7]胥红敏,孙加林,高芒芒,等.横风风速和车速对CRH2型动车组运行安全性指标影响规律的研究[J].中国铁道科学,2014,35(2):65-71.(XU Hong-min,SUN Jia-lin,GAO Mang-mang,et al.Study on the Influence Laws of Crosswind Speeds and Train Speeds on the Operation Safety Indexes of CRH2EMU Trains[J].China Railway Science,2014,35(2):65-71.in Chinese)
[8]周昱.基于SIMPACK和ANSYS的铁路车桥耦合振动仿真分析(硕士学位论文)[D].成都:西南交通大学,2013.(ZHOU Yu.Simulation Analysis of Vehicle-Bridge Coupling Vibration of Railway Bridge Based on SIM-PACK and ANSYS(Master Dissertation)[D].Chengdu:Southwest Jiaotong University,2013.in Chinese)
[9]中国铁道科学研究院.厦深铁路漳深段广铁集团管段动态监测报告[R].北京:2013.(China Academy of Railway Sciences.Report of Dynamic Monitoring of Section Administrated by Guangzhou Railway(Group)Corporation on ZhangzhouShenzhen Section of Xiamen-Shenzhen Railway[R].Beijing:2013.in Chinese)
[10]铁运函[2004]120号,铁路桥梁检定规范[S].(TYH[2004]No.120,Code for Rating Existing Railway Bridge[S].)
[11]TB 10621-2014,高速铁路设计规范[S].(TB 10621-2014,Code for Design of High Speed Railway[S].)
[2]蔡禄荣,李家茂,王钰,等.榕江特大桥悬拼架设临时加强措施设计[J].桥梁建设,2012,42(1):90-95.(CAI Lu-rong,LI Jia-mao,WANG Yu,et al.Design of Temporary Stiffening Measures for Cantilever Assembling and Erection of Rongjiang River Bridge[J].Bridge Construction,2012,42(1):90-95.in Chinese)
[3]王钰.厦深铁路榕江特大桥列车运行稳定性试验研究[J].铁道科学与工程学报,2014,11(5):41-45.(WANG Yu.Test Research on Stability of Running Trains on Rongjiang River Bridge on Xiamen-Shenzhen Railway[J].Journal of Railway Science and Engineering,2014,11(5):41-45.in Chinese)
[4]鄢怀斌,周云,李慧明.厦深铁路榕江特大桥主桥连续钢桁梁柔性拱施工关键技术[J].世界桥梁,2014,42(4):6-9.(YAN Huai-bin,ZHOU Yun,LI Hui-ming.Key Construction Techniques for Continuous Steel Truss Girder and Flexible Arches of Main Bridge of Rongjiang River Bridge on Xiamen-Shenzhen Railway[J].World Bridges,2014,42(4):6-9.in Chinese)
[5]杨云,沈青川.厦深铁路榕江特大桥连续钢桁梁柔性拱组合桥成桥静、动载试验及结构性能研究[J].铁道科学与工程学报,2014,11(4):19-25.(YANG Yun,SHEN Qing-chuan.Static and Dynamic Loading Tests and Structural Behavior Analysis for Completed Rongjiang River Bridge with Continuous Steel Truss and Flexible Arches on Xiamen-Shenzhen Railway[J].Journal of Railway Science and Engineering,2014,11(4):19-25.in Chinese)
[6]朱伟,戚铁,贾亮.基于SIMPACK的钢桁梁斜拉桥车-桥系统动力性能分析[J].铁道标准设计,2014,58(7):89-94.(ZHU Wei,QI Tie,JIA Liang.Dynamic Performance Analysis of Vehicle-Bridge System for a Cable-Stayed Bridge with Steel Truss Girder Based on SIMPACK[J].Railway Standard Design,2014,58(7):89-94.in Chinese)
[7]胥红敏,孙加林,高芒芒,等.横风风速和车速对CRH2型动车组运行安全性指标影响规律的研究[J].中国铁道科学,2014,35(2):65-71.(XU Hong-min,SUN Jia-lin,GAO Mang-mang,et al.Study on the Influence Laws of Crosswind Speeds and Train Speeds on the Operation Safety Indexes of CRH2EMU Trains[J].China Railway Science,2014,35(2):65-71.in Chinese)
[8]周昱.基于SIMPACK和ANSYS的铁路车桥耦合振动仿真分析(硕士学位论文)[D].成都:西南交通大学,2013.(ZHOU Yu.Simulation Analysis of Vehicle-Bridge Coupling Vibration of Railway Bridge Based on SIM-PACK and ANSYS(Master Dissertation)[D].Chengdu:Southwest Jiaotong University,2013.in Chinese)
[9]中国铁道科学研究院.厦深铁路漳深段广铁集团管段动态监测报告[R].北京:2013.(China Academy of Railway Sciences.Report of Dynamic Monitoring of Section Administrated by Guangzhou Railway(Group)Corporation on ZhangzhouShenzhen Section of Xiamen-Shenzhen Railway[R].Beijing:2013.in Chinese)
[10]铁运函[2004]120号,铁路桥梁检定规范[S].(TYH[2004]No.120,Code for Rating Existing Railway Bridge[S].)
[11]TB 10621-2014,高速铁路设计规范[S].(TB 10621-2014,Code for Design of High Speed Railway[S].)