Probabilistic seismic risk assessment of simply supported steel railway bridges

Mehmet F. Yilmaz*, Barlas O. Caglayan, Kadir Ozakgul

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7 Atıf (Scopus)

Özet

Fragility analysis is an effective tool that is frequently used for seismic risk assessment of bridges. There are three different approaches to derive a fragility curve: experimental, empirical and analytical. Both experimental and empirical methods to derive fragility curve are based on past earthquake reports and expert opinions which are not suitable for all bridges. Therefore, analytical fragility analysis becomes important. Nonlinear time history analysis is commonly used which is the most reliable method for determining probabilistic demand models. In this study, to determine the probabilistic demand models of bridges, time history analyses were performed considering both material and geometrical nonlinearities. Serviceability limit states for three different service velocities were considered as a performance goal. Also, support displacements, component yielding and collapse limits were taken into account. Both serviceability and component fragility were derived by using maximum likely hood methods. Finally, the seismic performance and critical members of the bridge were probabilistically determined and clearly presented.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)91-99
Sayfa sayısı9
DergiEarthquake and Structures
Hacim17
Basın numarası1
DOI'lar
Yayın durumuYayınlandı - Tem 2019

Bibliyografik not

Publisher Copyright:
© 2019 Techno-Press, Ltd. All Rights Reserved.

Finansman

This research presented in this paper was supported by TCDD and TUBİTAK 114M332 project. Any opinions expressed in this paper are those of authors and do not reflect the opinions of the supporting agencies. This research presented in this paper was supported by TCDD and TUBiTAK 114M332 project. Any opinions expressed in this paper are those of authors and do not reflect the opinions of the supporting agencies.

FinansörlerFinansör numarası
TUBİTAK114M332
Texas Council for Developmental DisabilitiesTUBiTAK 114M332

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