Application of various schemes for damping estimation of the suspension Bridge for the cause investigation of a vortex-induced vibration

Sunjoong Kim, Ho Kyung Kim, You Chan Hwang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A vortex-induced vibration (VIV) was observed on the Yi Sun-sin Bridge. The primary source of VIV was estimated as the temporal screens applied on the bridge railings for maintaining curing temperature of the replaced wearing surface. The interesting aspect is that the bridge deck was oscillated as 4th vertical mode so that lower damping ratio of 4th vertical mode can be a factor of the development of unexpected VIV. This paper presents the extracted modal damping ratio through various system identification schemes based on the field monitored data. The damping ratio of 4th vertical mode is around 0.4% for each scheme while 1st and 2nd vertical modes indicate about 1∼2% of modal damping ratio.

Original languageEnglish
Title of host publicationIABSE Conference, Geneva 2015
Subtitle of host publicationStructural Engineering: Providing Solutions to Global Challenges - Report
PublisherInternational Association for Bridge and Structural Engineering (IABSE)
Pages1334-1337
Number of pages4
ISBN (Electronic)9783857481406
StatePublished - 2015
EventIABSE Conference, Geneva 2015: Structural Engineering: Providing Solutions to Global Challenges - Geneva, Switzerland
Duration: 23 Sep 201525 Sep 2015

Publication series

NameIABSE Conference, Geneva 2015: Structural Engineering: Providing Solutions to Global Challenges - Report

Conference

ConferenceIABSE Conference, Geneva 2015: Structural Engineering: Providing Solutions to Global Challenges
Country/TerritorySwitzerland
CityGeneva
Period23/09/1525/09/15

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