Influencing factors of Impact Coefficient for Long-span Railway Cable-stayed Bridge

PDF(2737 KB)

Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (19) : 138-143.

LI Yong-le1，BAO Yu-long1，DONG Shi-fu1,2，ZENG Yong-ping3，XIANG Huo-yue1

Author information +

History +

Abstract

In order to investigate the effect of some factors including train formation on impact coefficient of long-span railway cable-stayed bridge, according to the vehicle-induced vibration characteristics of long-span railway cable-stayed bridge, the method of vehicle-bridge coupling vibration is adopt to explore the impact effects to local elements of bridge under different train’s operational conditions. Based on the self-developed software BANSYS, the dynamic responses of the long-span railway cable-stayed bridge are calculated, and the effect of train formation, track irregularities, advancing directions and types of trains on the impact characteristics of each part of cable-stayed bridge are discussed. The results show that the same or similar train formation should be adopted when conducting vehicle-bridge dynamic calculation or field dynamic experiments; there are obvious differences among the impact coefficients at the same position when the driving direction of train is opposite.

Key words

long-span railway cable-stayed bridge / vehicle-bridge coupling vibration / impact coefficient / influencing factor / train formation

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

LI Yong-le1，BAO Yu-long1，DONG Shi-fu1,2，ZENG Yong-ping3，XIANG Huo-yue1. Influencing factors of Impact Coefficient for Long-span Railway Cable-stayed Bridge[J]. Journal of Vibration and Shock, 2015, 34(19): 138-143

References

[1] 项海帆，吴定俊. 我国铁路桥梁的现状和展望[J]. 2001, (2):1-5.
     XIANG Hai-fang, WU Ding-jin. The present situation and prospect of railway bridge in china[J]. Railway construction technology, 2001, (2):1-5.
[2] 许慰平，程庆国. 大跨度铁路桥梁车桥耦合振动研究[J]. 中国铁道科学，1989, 10(2): 14-26.
XU Wei-ping, CHENG Qin-guo. Study on space dynamic interaction between train and long-span railway bridge[J]. China Railway Science, 1989, 10(2):
14-16.
[3] 王永平，陈彦江，傅金科. 单车荷载下简支梁桥的动力特性和响应的试验研究[J]. 土木工程学报，1995, 28(5): 39-47.
WANG Yon-ping, CHEN Yan-jiang, FU Jin-ke. Experimental and theoretical analysis of dynamic characteristics and response of highway bridge under single moving vehicle[J]. China Civil Engineering Journal, 1995, 28(5): 39-47.
[4] 周勇军，赵煜，贺全海，等. 刚构-连续组合桥梁冲击系数多因素灵敏度分析[J]. 振动与冲击，2012, 31(3): 97-101.
ZHOU Yong-jun, ZHAO Yu, HE Quan-hai, et al. Muti-parameters sensitivity analysis of impact factors for rigid-continious conbined bridge[J]. Journal of vibration and shock, 2012, 31(3): 97-101.
[5]   Li K H. Lotrechte Schwingungen der Hangebrucken Ingenieur-Archiv Ⅷ,1942.
[6] Chu K. H，Garg V. K. Railway-bridge impact: simplified train and bridge model[J]. Structural Division, ASCE. 1979, 105(ST9).
[7] 曹雪芹. 车速提高至140km/h对既有桥跨结构的影响分析[J]. 铁道学报，1991, 13(3): 97-104.
CAO Xue-qin. Dynamic response of the bridge structure under high-speed train loads[J]. Joural of the China Railway Society, 1991, 13(3): 97-104.
[8] 李永乐，强士中，廖海黎. 风-车-桥系统空间耦合振动研究[J]. 土木工程学报，2005,38(7):61-64.
LI Yong-le, LIAO Hai-li, QIANG Shi-zhong. 3-D coupled vibration of wind-vehicle-bridge system [J]. China Civil Engineering Journal, 2005, 38(7): 61-64.
[9] 李永乐，赵凯，蔡宪棠. 桥梁基础刚度有限元模拟的正交三梁模型[J]. 桥梁建设，2010, (6): 17-20.
LI Yong-le, ZHAO Kai , CAI Xian-tang. Three-Orthogonal- Beam Model for Finite Element Simulation of Bridge Foundation Stiffness[J]. Bridge Construction, 2010, (6): 17-20.
[10] 董世赋. 基于车桥耦合振动的铁路桥梁冲击系数研究 [D]. 西南交通大学硕士论文. 成都: 2013.
DONG shi-fu. Impact Coefficient of Railway Bridge Based on Vehicle-bridge Coupling Virbration Analysis [D]. Master Thesis of Southwest Jiaotong University. Chengdu: 2013.
[11] F.T.K. Au， J.J.Wang，Y.K.Cheng. Imapct study of cable-stayed bridges under railway traffic using various models. Journal of sound and vibration, 2001, 240: 447-465.
[12] 向俊，马长水，曾庆元. 列车编组对桥梁振动响应影响的试验研究[J].实验力学，2002,17(4):504-510.
     XIANG Jun, MA Chang-shui, ZENG Qing-yuan. Research on the effect of train formation on bridge vibration responses[J]. Journal of experimental mechanics, 2002, 17(4): 504-510.
[13] 郭薇薇，夏禾，李慧乐，等. 铁路新型钢—混凝土组合桁架桥在列车作用下的动力响应分析[J]. 振动与冲击，2012, 31(4):128-133.
GUO Wei-wei, XIA He, LI Hui-le, et al. Dynamic analysis of a new type of railway steel-concrete composite trussed bridge under running trains excitation[J]. Journal of vibration and shock, 2012, 31(4): 128-133.
[14] 王海城，施尚伟.桥梁冲击系数影响因素分析及偏差成因[J]. 重庆交通大学学报（自然科学版），2007,26(5):25-28.
     WANG Hai-cheng, SHI Shang-wei. Analysis of bridge impact coefficient influence factor and the deviation formation[J]. Journal of chongqing jiaotong university(natural science), 2007, 26(5): 25-28.