Influence of traveling wave effect on seismic mitigation control for long-span cable-stayed bridge

QI Xing-jun; LI Xiao-jun; WANG Jing-wei

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QI Xing-jun, LI Xiao-jun, WANG Jing-wei. Influence of traveling wave effect on seismic mitigation control for long-span cable-stayed bridge[J]. Journal of Traffic and Transportation Engineering, 2008, 8(6): 70-76.

Citation:

QI Xing-jun, LI Xiao-jun, WANG Jing-wei. Influence of traveling wave effect on seismic mitigation control for long-span cable-stayed bridge[J]. Journal of Traffic and Transportation Engineering, 2008, 8(6): 70-76.

Citation:

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Influence of traveling wave effect on seismic mitigation control for long-span cable-stayed bridge

1.
School of Civil Engineering, Shandong Jianzhu University, Jinan 250101, Shandong, China
2.
Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, Heilongjiang, China

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Author Bio:
QI Xing-jun(1974-), male, associate professor, PhD, + 86-531-86367072, qxj123@163.com
Received Date: 2008-07-21
Publish Date: 2008-12-25

Abstract

Abstract

In order to study the influence of traveling wave effect on the seismic response of vibration mitigation control for cable-stayed bridge, a calculation method of seismic mitigation control for long-span bridge was presented under multiple ground motion inputs, and the vibration-suppressed effeetivenesses of semi-active control and passive control for a long-span floating cable-stayed bridge with dampers set on towers and piers were calculated and analyzed by its 3D finite element model. Calculation result indicates that semi-active control method can gently control the seismic response of bridge, passive control method can sharply control the response, so passive control method should be used carefully. Traveling wave effect makes little bad influence on the tower of cable-stayed bridge for uncontrol, semi-active control and passive control with the maximal augment of 10~ for internal force, but it can make serious bad influence on the beam with maximal augment of about 8 times for internal force. The bad influences of traveling wave effect on the vibration-suppressed effectivenesses of semi-active control and passive control are little with no obvious bad control effectivenesses.
- bridge engineering,
- cable-stayed bridge,
- traveling wave effect,
- vibration-suppressed effectiveness,
- semi-active control,
- passive control

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References(10)

References

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