Analysis of longitudinal seismic vibration for simply-supported beam bridge

ZHOU Yong-jun; PENG Xiao-bin; ZHAO Yu; SONG Yi-fan; HE Shuan-hai

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ZHOU Yong-jun, PENG Xiao-bin, ZHAO Yu, SONG Yi-fan, HE Shuan-hai. Analysis of longitudinal seismic vibration for simply-supported beam bridge[J]. Journal of Traffic and Transportation Engineering, 2007, 7(6): 86-89.

Citation:

ZHOU Yong-jun, PENG Xiao-bin, ZHAO Yu, SONG Yi-fan, HE Shuan-hai. Analysis of longitudinal seismic vibration for simply-supported beam bridge[J]. Journal of Traffic and Transportation Engineering, 2007, 7(6): 86-89.

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Analysis of longitudinal seismic vibration for simply-supported beam bridge

1.
Key Laboratory for Bridge and Tunnel of Shaanxi Province, Chang'an University, Xi'an 710064, Shaanxi, China
2.
Communications Planning and Design Institute of Hubei Province, Wuhan 430051, Hubei, China

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Author Bio:
Zhou Yong-jun(1978-), male, EngD, lecturer, + 86-29-82334872, zyj@gl.chd.edu.cn
Received Date: 2007-06-09
Publish Date: 2007-12-25

Abstract

Abstract

In order to compute the seismic loads of multi-span simply-supported beam bridge, according to the deformation behavior of piers sited on elastic foundations, pier's deflection function was taken as the fundamental vibration mode, it was derived under unit force acting on pier's top, the effect of foundation deformation was taken into account, the longitudinal seismic vibration equation of the bridge was deduced by Lagrange function, and the approximate formulas of its fundamental frequency and participation factors were put forward.Simulated result shows that the first and second calculated vibration frequencies are 7.43 and 11.19 Hz respectively, and their corresponding test values are 7.00 and 10.55 Hz respectively, their errors aren't more than 5.8%, which demonstrates that the mode is appropriate for assessing the longitudinal seismic performance of the bridge.
- bridge engineering,
- simply-supported beam bridge,
- seismic load,
- Lagrange function,
- foundation deformation,
- fundamental frequency

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References(11)

References

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