Numerical simulation on the whole dynamic process of a typhoon field passing through a long span bridge

PDF(1416 KB)

Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (14) : 260-266.

WU Jun1， LIU Huanju2， HUANG Pingming1， HAN Wanshui1， LIU Xiaodong1

Author information +

History +

Abstract

The whole dynamic process of a typhoon field passing through a bridge was simulated in the aspects of speed and direction.Based on the Batts model,typhoon attenuation model and regularity of wind profile, the time-varying mean speed of the typhoon was simulated.The harmonic synthesis method was improved in terms of evolutionary spectrum to simulate the fluctuating speed, and a dynamic simulation method for typhoon speed was constructed.According to the geometric relationship between bridge nodes and the attenuated typhoon field, the time-varying wind directions at bridge nodes were determined, and a dynamic simulation method for wind direction was built.Taking a typical cable-stayed bridge as an example, the applicability of the whole process simulation method for the typhoon field around the long-span bridge was studied.The results show that the established simulation method can take into account the non-stationary property, intensity attenuation and direction variation of the typhoon, and can be applied to the simulation of typhoon field around the long span bridge; during the period when the typhoon passes through the bridge, the wind direction at each node experiences remarkable change which can even reach 180 degree.The wind direction at each node is different and time-varying; and the wind direction experienced by the bridge undergoes a continuous change from the one side of the main beam to a circulation that makes the main beam rotate and finally to the other side.

Key words

typhoon / numerical simulation / whole dynamic process simulation / time-varying wind direction

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

WU Jun1， LIU Huanju2， HUANG Pingming1， HAN Wanshui1， LIU Xiaodong1. Numerical simulation on the whole dynamic process of a typhoon field passing through a long span bridge[J]. Journal of Vibration and Shock, 2019, 38(14): 260-266

References

[1] HAN W S, MA L, CAI C S, et al. Nonlinear dynamic performance of long-span cable-stayed bridge under traffic and wind[J]. Wind and Structures, 2015,20(2): 249-274.
[2] CAI C S, CHEN S R. Framework of vehicle-bridge-wind dynamic analysis[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2004(92):579-607.
[3] HAN Y, CAI C S, ZHANG J R, et al. Effects of aerodynamic parameters on the dynamic response of road vehicles and bridges under cross winds[J]. Journal of Wind Engineer- ing and Industrial Aerodynamics, 2014(134):78-95.
[4] LI X L, XIAO Y Q, KAREEM A, et al. Modeling typhoon wind power spectra near sea surface based on measurements in the south China sea[J]. Journal of Wind Engineering and Industrial Aerodynamics,2012,(104- 106):565-576
[5] 李春祥,刘晨哲,申建红,等. 土木工程下击暴流风速数值模拟的研究[J].振动与冲击,2010,29(12):49-54.
LI Chunxiang, LIU Chenzhe, SHEN Jianhong, et al. Numerical simulations of downburst wind speeds in civil engineering[J]. Journal of Vibration and Shock, 2010,29 (12):49-54.
[6] 张文福,谢丹,刘迎春,等. 下击暴流空间相关性风场模拟[J].振动与冲击,2013,32(10):12-16.
ZHANG Wenfu, XIE Dan, LIU Yingchun, et al. Simulation of downburst wind field with spatial correlation[J]. Journal of Vibration and Shock, 2013, 32(10): 12-16.
[7] 李锦华,吴春鹏,陈水生. 下击暴流非平稳脉动风速数值模拟[J].振动与冲击,2014,33(14):54-60.
LI Jinhua, WU Chunpeng, CHEN Shuisheng. Simulation of non-stationary fluctuating wind velocity in downburst[J]. Journal of Vibration and Shock, 2014,33 (14):54-60.
[8] HUANG G Q, ZHENG H T, XU Y L, et al. Spectrum models for nonstationary extreme winds[J]. Journal of Structural Engineering, 2015.
[9] ZHANG W. Bridge fatigue damage assessment under vehicle and non-stationary hurricane wind[C]. The 12th Americas Conference on Wind Engineering, Washington, USA, 2013.
[10] 彭翔,段忠东,李茜. 三种台风风场模性的对比研究[C].第十二届全国结构风工程会议论文集,179-184.
PENG Xiang, DUAN Zhongdong, LI Qian. A comparative study of three typhoon wind patterns[C]. Proceedings of the Twelfth National Conference on structural wind engineering, 179-184.
[11] 伍荣生. 现代天气学原理[M].北京：高等教育出版社,1999.
[12] BATTS M E, SIMIU E, RUSSELL L R. Hurricane wind speeds in the United States[J]. Journal of the Structural Division ,1980,106(10):2001-2016.
[13] 刘学敏.强风作用下低矮房屋抗风能力分析[D].大连：大连理工大学,2016.
LIU Xuemin. The resistance analysis of low-rise buildings in strong wind[D]. Dalian: Dalian University of Technology,2016.
[14] 李利孝,肖仪清,宋丽莉,等. 基于风观测塔和风廓线雷达实测的强台风黑格比风剖面研究[J].工程力学,2012,29(9): 284-293.
LI Lixiao, XIAO Yiqing, SONG Lili, et al. Study on wind profile of typhoon Hagupit using wind observed tower and wind profile radar measurements [J].Engineer- ing Mechenics, 2012,29(9): 284-293.
[15] 李永乐. 风-车-桥系统非线性空间耦合振动研究[D].成都：西南交通大学，2003.
LI Yongle. Nonlinear three-dimensional coupling vibration of wind-vehicle-bridge system[D].Chengdu: Southwest Jiaotong University,2003.
[16] CAO S Y, TAMURA Y K, KIKUCHI N S, et al. Wind characteristic of a strong typhoon[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2009(97): 11-21.