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Dynamic characteristics of Seohae cable-stayed bridge based on results from long-term structural health monitoring

 Dynamic characteristics of Seohae cable-stayed bridge based on results from long-term structural health monitoring
Autor(en): , , ,
Beitrag für IABSE Symposium: Improving Infrastructure Worldwide, Weimar, Germany, 19-21 September 2007, veröffentlicht in , S. 212-215
DOI: 10.2749/222137807796120274
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This paper presents the long-term dynamic characteristics of a cable-stayed bridge where installed the SHM (Structural Health Monitoring) system. Modal parameters such as natural frequencies and mo...
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Autor(en):



Medium: Tagungsbeitrag
Sprache(n): Englisch
Tagung: IABSE Symposium: Improving Infrastructure Worldwide, Weimar, Germany, 19-21 September 2007
Veröffentlicht in:
Seite(n): 212-215 Anzahl der Seiten (im PDF): 8
Seite(n): 212-215
Anzahl der Seiten (im PDF): 8
Jahr: 2007
DOI: 10.2749/222137807796120274
Abstrakt:

This paper presents the long-term dynamic characteristics of a cable-stayed bridge where installed the SHM (Structural Health Monitoring) system. Modal parameters such as natural frequencies and mode shapes were identified from the modal analysis using the three-dimensional finite element model. The modal parameters of the developed baseline model have a good correlation with those identified from field ambient vibrations. By the analysis of correlations between the measured natural frequencies and temperatures, it was found the natural frequency was in linearly inverse proportion to the temperature. Mode shapes were extracted from the TDD (Time Domain Decomposition) technique for ambient vibration measurements. Finally, these results demonstrate that the TDD technique can apply to identify modal parameters of large-scaled bridges.

Stichwörter:
Schrägseilbrücke Temperatureinfluss

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