Seismic fragility assessment of integral precast multi-span bridges in areas of moderate seismicity

Simon, József and Vigh, László Gergely (2016) Seismic fragility assessment of integral precast multi-span bridges in areas of moderate seismicity. Bulletin of Earthquake Engineering. pp. 1-26. ISSN 1570-761X

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In lack of seismic provisions in the pre-Eurocode ages, most of the existing Hungarian bridges were not designed for seismic actions, therefore their seismic performance is questionable. The most commonly used structural type in highway construction is the integral precast multi-girder bridge. These bridges are typically constructed as continuous multi-support systems with monolithic joints at each support, thus their behavior may be significantly different from those applying simply supported beams and conventional bearings. A parametric fragility analysis of a wide range of different layouts is carried out using detailed and advanced non-linear numerical models. The results indicate that the abutment joints are highly vulnerable and piers are also critical for longer bridges. The study implies that without seismic design, integral precast multi-girder bridges are highly susceptible to pier shear failure, the probability of collapse is relatively high. The results also provide a solid basis for retrofit planning as well as for development of design concepts of newly built structures in moderate seismic zones.

Item Type: Article
Uncontrolled Keywords: Parametric seismic analysis, Seismic performance, Integral bridges, Multiple stripes analysis, Fragility analysis, Seismic reliability analysis, Moderate seismicity
Subjects: T Technology / alkalmazott, műszaki tudományok > TA Engineering (General). Civil engineering (General) / általános mérnöki tudományok
T Technology / alkalmazott, műszaki tudományok > TG Bridge engineering / hídépítés
Depositing User: Dr. László Gergely Vigh
Date Deposited: 26 Sep 2016 12:05
Last Modified: 26 Sep 2016 12:05

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