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Report of an Unexpected Vortex-Induced Vibration in an Actual Suspension Bridge

 Report of an Unexpected Vortex-Induced Vibration in an Actual Suspension Bridge
Auteur(s): , ,
Présenté pendant IABSE Conference: Structural Engineering: Providing Solutions to Global Challenges, Geneva, Switzerland, September 2015, publié dans , pp. 832-835
DOI: 10.2749/222137815818357953
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An unexpected vibration was observed on the Yi Sun-sin Bridge on October 26th, 2014. Since the bridge was subjected to a single mode vibration in limited amplitude for one and half hours, it was re...
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Détails bibliographiques

Auteur(s): (Seoul National University, Seoul, Republic of Korea)
(Seoul National University, Seoul, Republic of Korea)
(Seoul National University, Seoul, Republic of Korea)
Médium: papier de conférence
Langue(s): anglais
Conférence: IABSE Conference: Structural Engineering: Providing Solutions to Global Challenges, Geneva, Switzerland, September 2015
Publié dans:
Page(s): 832-835 Nombre total de pages (du PDF): 4
Page(s): 832-835
Nombre total de pages (du PDF): 4
Année: 2015
DOI: 10.2749/222137815818357953
Abstrait:

An unexpected vibration was observed on the Yi Sun-sin Bridge on October 26th, 2014. Since the bridge was subjected to a single mode vibration in limited amplitude for one and half hours, it was regarded as a vortex-induced vibration (VIV). Since the bridge was aerodynamically well designed for the VIV as well as flutter instability, the cause of the vibration was investigated via a series of two-dimensional wind tunnel tests. The one-side lanes were closed to traffics and the epoxy- coated wearing surface was being replaced at the time of the VIV. Since the primary source was estimated as the temporal screens applied on the bridge railings for maintaining curing temperature of the replaced wearing surface, wind tunnel tests were carried out for the section model of the deck section with and without the screens. This paper presents the screen effects on VIV of the investigated bridge and the illustration of the observed vibration based on in-depth investigation with a series of two-dimensional wind tunnel.

Mots-clé:
essai en soufflerie pont suspendu

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