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Chain reaction failure analysis for tied arch bridge considering cable corrosion

 Chain reaction failure analysis for tied arch bridge considering cable corrosion
Author(s): , , , ,
Presented at IABSE Symposium: Construction’s Role for a World in Emergency, Manchester, United Kingdom, 10-14 April 2024, published in , pp. 1243-1250
DOI: 10.2749/manchester.2024.1243
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Cable corrosion has been becoming significant issues for the bridge structures having with cable or hanger materials, such as suspension bridges, cable-stayed bridges, tied arch bridges and so on. ...
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Bibliographic Details

Author(s): (Akita university, Akita, Japan)
(Akita university, Akita, Japan)
(Akita university, Akita, Japan)
(Yokogawa Bridge Corp. Tokyo, Japan)
(Tokai University, Kanagawa, Japan)
Medium: conference paper
Language(s): English
Conference: IABSE Symposium: Construction’s Role for a World in Emergency, Manchester, United Kingdom, 10-14 April 2024
Published in:
Page(s): 1243-1250 Total no. of pages: 8
Page(s): 1243-1250
Total no. of pages: 8
DOI: 10.2749/manchester.2024.1243
Abstract:

Cable corrosion has been becoming significant issues for the bridge structures having with cable or hanger materials, such as suspension bridges, cable-stayed bridges, tied arch bridges and so on. Many of these bridges, which were built in 1980s and 90s, are possibly surviving under the cable corrosion. Existing tied arch bridge was collapsed in Taiwan in 2019. It is reported that cable corrosion is the one of the main reasons to trigger the entire bridge collapsed. In this study, the numerical bridge model inspired by the Taiwan arch bridge was designed for analyzing the dynamic analysis of chain reaction failure considering with the cable corrosion. The corrosion of cable is represented by the decreasing of yield stress and breakage strain, and the first ruptured cable which is represented by the decreasing tensile force instantly. According to this analysis, if the cables are corroded significantly, the chain reaction failure would be occurred.

Keywords:
cable-stayed bridge FEM dynamic analysis cable corrosion chain reaction analysis

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