[1]吴定俊,陈锐,李奇.多荷载作用下上海长江大桥列车走行性[J].长安大学学报(自然科学版),2019,39(03):65-73.
 WU Ding jun,CHEN Rui,LI Qi.Ride quality of trains moving on Shanghai Yangtze River Bridge considering effect of multiple loads[J].Journal of Chang’an University (Natural Science Edition),2019,39(03):65-73.
点击复制

多荷载作用下上海长江大桥列车走行性()
分享到:

长安大学学报(自然科学版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
第39卷
期数:
2019年03期
页码:
65-73
栏目:
桥梁与隧道工程
出版日期:
2019-05-15

文章信息/Info

Title:
Ride quality of trains moving on Shanghai Yangtze River Bridge considering effect of multiple loads
作者:
吴定俊陈锐李奇
(同济大学 桥梁工程系,上海 200092)
Author(s):
WU Dingjun CHEN Rui LI Qi
(Department of Bridge Engineering, Tongji University, Shanghai 200092, China)
关键词:
桥梁工程风车桥系统耦合振动走行性斜拉桥模态叠加法随机车流
Keywords:
bridge engineering windvehiclebridge system coupled vibration ride quality cablestayed bridge mode superposition method random traffic flow
文献标志码:
A
摘要:
为研究上海长江大桥在风、汽车荷载、温度、道路不平顺多因素影响下的列车走行性,将其视作温度变形、公路与轨道不平顺作用下的风车桥耦合动力系统。建立桥梁、列车车辆、不同类型汽车的有限元模型,采用模态叠加法进行车桥动力计算。计算中运用随机交通流模型模拟公路交通流,采用文献中针对该桥风洞试验测定的主梁及车辆的气动参数,并将年温差引起的桥梁变形叠加到轨道和路面随机不平顺中。采用自编车桥耦合计算软件VBC进行风车桥耦合动力分析。分别考虑了有无风荷载作用下温度荷载、汽车车流类型和列车运行方式的影响,并对多荷载作用组合下的极限状况进行讨论,分别考虑了列车空员、定员和满员3种不同载重的影响。最后,根据不同车速和风速组合下的计算结果,确定轮对横向力为列车走行性的控制指标,并提出了列车安全、舒适运行的管理原则。研究结果表明:年温差和汽车车流对列车动力响应的影响并不明显,列车响应随车速、风速的增大而增大;列车相对于风向的运行方式对列车走行性也有很大影响;在较高风速下,单线列车迎风侧行驶为列车的最不利运行方式;当风速小于20 m/s时,最高运营车速可达〖JP2〗到90 km/h;当风速大于20 m/s且不超过25 m/s时,运营车速应小于70 km/h;当风速超过25 m/s〖JP〗时,应当封闭轨道交通。
Abstract:
In order to investigate the ride quality of trains moving on the Shanghai Yangtze River Bridge subjected to multiple environmental loads, the wind, road irregularity, temperature, highway and railway loads were taken into account in the windvehiclebridge coupled system. Finite element models of the bridge, railway vehicles, and the different types of highway vehicles were developed and their modal results were then extracted for the vehiclebridge dynamic interaction analysis using the mode superposition method. A random traffic flow model was applied to simulate the highway traffic flow, the test aerodynamic parameters of the train and bridge reported in other literature were used. The deformation of the bridge induced by annual temperature variation was added to the random irregularities of the rail and road. The selfcomplied vehiclebridge coupling software VBC was used to calculate the responses of the windvehiclebridge dynamic interaction system. The effect of temperature load, highway vehicle types, train operation mode, with wind load or not, and train operation modes with respect to the wind direction were considered. The effects of extreme load combinations were investigated by considering the situations of trains with empty, capacity, and full passenger loads. Based on calculations at different train speeds and wind speeds, it was found that the lateral forces of the wheelsets control the ride quality of train. The guidelines for the safe and comfortable operation of the train were proposed. The results show that the annual temperature variation load and highway traffic flows have negligible effect on the ride quality of the trains. The dynamic responses of the trains increase with an increase in the train and wind speeds. The mode of operation relative to the direction of wind of the trains also has a significant effect on the ride quality of the trains. At high wind speeds, a single train traversing on the windward side is the most unfavorable operation mode, when the wind speed is less than 20 m/s, the maximum allowable operation speed can reach 90 km/h. When the wind speed is more than 20 m/s, the operation speed should be less than 70 km/h. And when the wind speed exceeds 25 m/s, the rail traffic should be closed. 5 tabs, 19 figs, 35 refs.

相似文献/References:

[1]李宇,朱晞,杨庆山,等.高墩大跨桥梁结构的脆弱性分析[J].长安大学学报(自然科学版),2012,32(01):0.
[2]高亮,刘健新,张丹,等.桁架桥主梁三分力系数试验[J].长安大学学报(自然科学版),2012,32(01):0.
[3]刘旭政,王丰平,黄平明,等.斜拉桥各构件校验系数的常值范围[J].长安大学学报(自然科学版),2012,32(01):0.
[4]尚维波,张春宁.高墩刚构桥系梁抗震分析[J].长安大学学报(自然科学版),2012,32(01):0.
[5]邬晓光,李冀弘,宋伟伟.基于改进响应面法的在役PC桥梁承载力可靠性[J].长安大学学报(自然科学版),2012,32(03):53.
 WU Xiao-guang,LI Ji-hong,SONG Wei-wei.Reliability of existing PC bridge based on improved response surface method[J].Journal of Chang’an University (Natural Science Edition),2012,32(03):53.
[6]石雄伟,袁卓亚,马毓泉,等.钢板-混凝土组合加固预应力混凝土箱梁[J].长安大学学报(自然科学版),2012,32(03):58.
 SHI Xiong-wei,YUAN Zhuo-ya,MA Yu-quan,et al.Prestressed concrete box girder strengthened with comsposition of steel plate and concrete[J].Journal of Chang’an University (Natural Science Edition),2012,32(03):58.
[7]李传习,陶 伟,董创文.斜交墩截面刚度与弯曲正应力[J].长安大学学报(自然科学版),2012,32(03):63.
 LI Chuan-xi,TAO Wei,DONG Chuang-wen.Sectional stiffness and bending normal stress of oblique pier[J].Journal of Chang’an University (Natural Science Edition),2012,32(03):63.
[8]邓继华,邵旭东.带铰平面梁元几何非线性有限元分析[J].长安大学学报(自然科学版),2012,32(03):68.
 DENG Ji-hua,SHAO Xu-dong.Geometric nonlinear finite element analysis of plane beam element with hinge[J].Journal of Chang’an University (Natural Science Edition),2012,32(03):68.
[9]蒲广宁,赵 煜,宋一凡.减梁增肋法加固空心板桥的力学性能[J].长安大学学报(自然科学版),2012,32(06):38.
 PU Guang-ning,ZHAO Yu,SONG Yi-fan.Mechanical properties of strengthening hollow slab bridge based on beam-reduction and rib-addition method[J].Journal of Chang’an University (Natural Science Edition),2012,32(03):38.
[10]党 栋,贺拴海,周勇军,等.基于车辆统计数据的汽车荷载标准值取值与评估[J].长安大学学报(自然科学版),2012,32(06):44.
 DANG Dong,HE Shuan-hai,ZHOU Yong-jun,et al.Choosing and assessment for the standard of vehicle load based on vehicle statistical data[J].Journal of Chang’an University (Natural Science Edition),2012,32(03):44.

更新日期/Last Update: 2019-05-23