全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
工程力学  2012 

撞击荷载作用下高速铁路桥梁的动力响应及列车运行安全分析

DOI: 10.6052/j.issn.1000-4750.2011.05.0299

Keywords: 高速铁路,桥梁,撞击荷载,动力响应,车辆,运行安全

Full-Text   Cite this paper   Add to My Lib

Abstract:

建立了“列车-桥梁-撞击荷载”系统动力分析模型,通过在松花江大桥进行的现场试验,得到了流冰撞击力时程,施加到桥墩上作为系统的激励。编制了分析程序,以高速铁路5×32m预应力混凝土简支单线箱梁桥为算例,通过计算机模拟,对流冰撞击作用下桥梁结构的动力响应及桥上高速列车的运行安全问题进行了研究。分析了在有流冰、无流冰撞击作用两种情况下,桥梁结构关键部位的位移和加速度响应,以及桥上高速运行列车的车辆脱轨系数和轮重减载率等行车安全指标。计算结果表明:流冰撞击作用对桥梁结构以及高速列车的动力特性具有较大的影响,撞击作用使桥梁和车辆的动力响应大幅度增大。当流冰撞击荷载峰值达到4000kN时,车辆减载率已经超过了0.6的限值。撞击荷载作为一项特殊的作用力,在高速铁路桥梁的动力设计中应予以重视。

References

[1]  Lu Qinnian, Duan Zhongdong, Ou Jinping, et al. Calculating method of river ice loads on piers (II) [J]. Journal of Natural Disasters, 2002, 11(4): 112―118. (in Chinese)
[2]  Roads and Transportation Association of Canada. Ice effects on bridge [R]. Technical Report, RTAC, Vancouver, 1996.
[3]  宣言, 张煅. 因船只撞击桥墩引起铁路桥梁上列车的脱轨[J]. 国外桥梁, 2001, 19(4): 60―64.
[4]  Xuan Yan, Zhang Duan. Derailment of train induced by vessel collission on railway bridge pier [J]. Bridges Abroad, 2001, 19(4): 60―64. (in Chinese)
[5]  Hui Rongyan, Huang Guoxing, Yi Bingruo. Creep of concrete [M]. Beijing: China Railway Publishing House, 1988: 1―5. (in Chinese)
[6]  CCES 02-2004, 自密实混凝土设计与施工指南[S]. 北京: 中国建筑工业出版社, 2005.
[7]  Fryba L. Dynamic behaviour of bridges due to high speed trains [C]. Bridges for High Speed Railways, Porto, 2004: 137―158.
[8]  CCES 02-2004, Guide to design and construction of self-compacting concrete [S]. Beijing: China Architecture & Building Press, 2005. (in Chinese)
[9]  GB/T50082-2009, 普通混凝土长期性能和耐久性能试验方法标准[S]. 北京: 中国建筑工业出版社, 2009.
[10]  Biondi B, Muscolino G, Sofi A. A substructure approach for the dynamic analysis of train-track-bridge system [J]. Computers & Structures, 2005, 83: 2271―2281.
[11]  GB/T50082-2009, Standard for test methods of long-term performance and durability of ordinary concrete [S]. Beijing: China Architecture & Building Press, 2009. (in Chinese)
[12]  Carol I, Assocate Members, ASCE F, Bazant Z P. Viscoelasticity with aging caused by solidification of nonaging constituent [J]. Journal of Engineering Mechanics, 1992, 119(11): 2252―2269.
[13]  Bazant Z P, ASCE F. Microprestress-solidification theory for concrete creep, II: algorithm and verification [J]. Journal of Engineering Mechanics, 1997, 123(11): 1195―1201.
[14]  Bazant Z P. Thermodynamics of interacting continua with surfaces and creep analysis of concrete structures [J]. Nuclear Engineering and Design, 1972(20): 477―505.
[15]  Zhang Nan, Xia He. Vehicle-bridge vibration analysis under high-speed trains [J]. Journal of Sound & Vibration, 2008, 268: 103―113.
[16]  夏禾, 张楠. 车辆与结构动力相互作用[M]. 第2版. 北京: 科学出版社, 2005: 1―20.
[17]  Xia He, Zhang Nan. Dynamic interaction of vehicles and structures [M]. 2nd ed. Beijing: Science Press, 2005: 1―20. (in Chinese)
[18]  Xia He, Zhang Nan, Guo Weiwei. Application of train- bridge-interaction analysis to bridge design of high-speed railways in China [C]. Proceedings of ISEV2009. Beijing: Science Press, 2009: 965―975.
[19]  Xia Chaoyi, Lei Junqing. Dynamic analysis of bridge piers under collision of floating-ices [C]. Proceedings of ISEV2009. Beijing: Science Press, 2009: 919―925.
[20]  汪振铠, 王常海. 嫩江-松花江-黑龙江春季流冰特点及其对桥梁墩台的影响[C]. 第三届全国冰工程会议论文集. 大连: 大连理工大学, 1997: 305―313.
[21]  Wang Zhenkai, Wang Changhai. Characteristics of flowing ice in the rivers of Nenjiang, Songhuajiang and Heilongjiang in spring, with analysis to its influence on bridge piers and abutments [C]. Proceedings of the 3rd national Symposium on Ice. Dalian: Dalian University of Technology, 1997: 305―313. (in Chinese)
[22]  Yu Tianlai, Lei Junqing, Li Chengyu, et al. Compressive strength of floating ice and calculation of ice force on bridge piers [C]. Proceedings of 14th Conference on Cold Regions Engineering, Duluth, Minnesota, 2009: 609―617.
[23]  Manen S E. Ship collision due to the presence of bridges [R]. Technical Report, PIANC General Secretariat, Brussels, 2001.
[24]  Yu Tianlai, Yuan Zhenguo, Huang Meilan. Experiment research on mechanical behavior of river ice [C]. Proceedings of the 19th International Symposium on Ice. Vancouver, Canada, 2008: 519―530.
[25]  陆钦年, 段忠东, 欧进萍, 等. 河冰对桥墩作用的冰荷载计算方法(II)[J]. 自然灾害学报, 2002, 11(4): 112―118.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133