[1] Ding Jianming, Chen Juanting, Wang Baoqian, Xu Xiuli, et al. Vertical human-induced vibration of pedestrian bridge [J]. Journal of Southeast University (English Edition), 2010, 26 (4): 582-585. [doi:10.3969/j.issn.1003-7985.2010.04.017]

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Vertical human-induced vibration of pedestrian bridge()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

26

Issue:

2010 4

Page:

582-585

Research Field:

Traffic and Transportation Engineering

Publishing date:

2010-12-30

Info

Title:

Vertical human-induced vibration of pedestrian bridge

Author(s):

Ding Jianming¹;  Chen Juanting²;  Wang Baoqian²;  Xu Xiuli³

¹School of Transportation, Southeast University, Nanjing 210096, China
²Institute of Architectural Design and Research, Southeast University, Nanjing 210096, China
³College of Civil Engineering, Nanjing University of Technology, Nanjing 210009, China

Keywords:

human-induced vibration;  spring-mass model;  double degrees-of-freedom(DOFs)parallel model

PACS:

U442

DOI:

10.3969/j.issn.1003-7985.2010.04.017

Abstract:

The double degrees-of-freedom(DOFs)parallel model is adopted to analyze static vertical human-induced vibration with the finite element analysis(FEA)method. In the first-order symmetric vibration mode, the periods of the spring-mass model gradually decrease with the increase in K₁ and K₂, but they are always greater than the period of the add-on mass model. Meanwhile, the periods of the spring-mass model decrease with the decrease in m₁ and m₂, but they are always greater than the period of the hollow bridge model. Since the human’s two degrees-of-freedom vibrate in the same direction as that of the bridge mid-span, the existence of human’s rigidity leads to the reduction in the rigidity of the spring-mass model. In the second-order symmetric vibration mode, the changes of rigidity K₂ and mass m₂ result in the disappearance or occurrence of some vibration modes. It can be concluded that compared with the spring-mass model, the results of the add-on mass model lean to lack of safety to the structure; besides, the DOF with a smaller ratio of mass to rigidity plays the chief role in the vibration of the structure.

References:

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Memo

Memo:

Biography: Ding Jianming(1963—), male, doctor, professor, dingjm@seu.edu.cn.
Citation: Ding Jianming, Chen Juanting, Wang Baoqian, et al.Vertical human-induced vibration of pedestrian bridge[J].Journal of Southeast University(English Edition), 2010, 26(4):582-585.

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