Response control of cable-stayed arch bridge using modified hanger system

Vertical or inclined cables which are placed in bridges as a hanger system affect the dynamic performance of bridges. Inclined hangers can be used instead of vertical hangers to improve the stability of the bridge aerodynamically. However, inclined hangers are susceptible to fatigue more than vertic...

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Bibliographic Details
Published in:Journal of vibration and control 2020-12, Vol.26 (23-24), p.2316-2328
Main Authors: Farahmand-Tabar, Salar, Barghian, Majid
Format: Article
Language:English
Subjects:
Aerodynamic stability
Arch bridges
Cable-stayed bridges
Cables
Fatigue
Hangers
Stiffness
Tensile stress
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Summary:Vertical or inclined cables which are placed in bridges as a hanger system affect the dynamic performance of bridges. Inclined hangers can be used instead of vertical hangers to improve the stability of the bridge aerodynamically. However, inclined hangers are susceptible to fatigue more than vertical ones. Considerable signs of distress or slackness might be shown by some inclined hangers because of their location on the bridge. In this study, a cable-stayed arch bridge with vertical and inclined hangers has been compared to investigate the effect of hangers on the dynamic performance of the bridge. To reduce the internal cable forces and the probability of fatigue or force fluctuation in hangers, additional horizontal cables are applied on inclined hangers that transfer the tensile load from overstressed hangers to adjacent ones with lower forces. By modification, the results demonstrate the higher stiffness and human comfort level for the bridge that improve the dynamic behavior and control the responses of the bridge.
ISSN:1077-5463
1741-2986
DOI:10.1177/1077546320921635