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The influence of varying temperature on measures of bridge health monitoring

  • It is widely recognized that the dynamics of large civil structures, such as bridges or offshore structures, is significantly affected by temperature and other environmental influences. The most significant effect on the structural stiffness is due to temperature variations and especially due to the thermal gradients within the structures cross section. For civil engineering structures, changes in the dynamic response produced by varying environmental conditions can be equivalent or greater than the ones produced by damage. Therefore, handling the environmental effects has become a major research field for global Structural Health Monitoring. A number of methods and techniques have been developed for addressing this issue for different civil engineering application examples. An additional question is if temperature changes of stiffness correlate with a change in safety level of the structures bearing capacity which has to be discussed case dependent In our contribution we showIt is widely recognized that the dynamics of large civil structures, such as bridges or offshore structures, is significantly affected by temperature and other environmental influences. The most significant effect on the structural stiffness is due to temperature variations and especially due to the thermal gradients within the structures cross section. For civil engineering structures, changes in the dynamic response produced by varying environmental conditions can be equivalent or greater than the ones produced by damage. Therefore, handling the environmental effects has become a major research field for global Structural Health Monitoring. A number of methods and techniques have been developed for addressing this issue for different civil engineering application examples. An additional question is if temperature changes of stiffness correlate with a change in safety level of the structures bearing capacity which has to be discussed case dependent In our contribution we show the result of an extensive literature review on the matter of varying temperature, describing the characteristic effects on the structure as well as the various approaches to that issue, including the experiences our work group has gained in the last 20 years of SHM on civil engineering structure.zeige mehrzeige weniger

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Metadaten
Autoren/innen:Matthias Baeßler
Koautoren/innen:Samir Said, Falk Hille
Dokumenttyp:Vortrag
Veröffentlichungsform:Präsentation
Sprache:Englisch
Jahr der Erstveröffentlichung:2016
Organisationseinheit der BAM:7 Bauwerkssicherheit
7 Bauwerkssicherheit / 7.2 Ingenieurbau
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurbau
Freie Schlagwörter:Monitoring; SHM; Temperature
Themenfelder/Aktivitätsfelder der BAM:Infrastruktur
Veranstaltung:Civil Structural Health Monitoring Workshop (CSHM-6)
Veranstaltungsort:Queen's University Belfast, UK
Beginndatum der Veranstaltung:26.05.2016
Enddatum der Veranstaltung:27.05.2016
Verfügbarkeit des Volltexts:Volltext-PDF im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:13.03.2017
Referierte Publikation:Nein