Assessment of an old reinforced concrete open-spandrel arch railway bridge

Kadir Ozakgul*, Mehmet Fatih Yilmaz, Barlas Ozden Caglayan

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2 Atıf (Scopus)

Özet

This paper presents assessment of a 94 years old reinforced concrete (RC) open-spandrel arch bridge with a total length of 285 m having seven major spans of 35 m, a height of 34 m and a vertical slope of 15 ‰. As the bridge was currently subjected to heavy trains having higher axle loads than it was originally designed, assessment of its actual structural condition was necessary. To determine actual in-situ behavior of the bridge, dynamic tests including a series of acceleration measurements along the bridge spans were performed. Then, 3D finite element model of the bridge was generated by using a structural analysis software based on its original constructional drawings. The initial FE model was updated using Response Surface Method (RSM) technique based on the results obtained from measurement data. The updated FE model was used for structural assessment and evaluation of the bridge under UIC-71 live loading. Rating factor and reliability index for each bridge member based on Load and Resistance Factor Rating (LRFR) approach were obtained. Results of the rating and reliability analysis showed that the most critical member of the bridge was the deck, thus strengthening and retrofitting of these deck members might be needed for live loads greater than those induced by UIC-71 train.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)284-294
Sayfa sayısı11
DergiStructures
Hacim44
DOI'lar
Yayın durumuYayınlandı - Eki 2022

Bibliyografik not

Publisher Copyright:
© 2022 Institution of Structural Engineers

Finansman

The presented research was supported by the Scientific and Technological Research Council of Turkey (TUBITAK), Project No. 114M332. Authors greatly appreciate for this support and opportunity.The support provided by the Turkish Railways Administration (TCDD) during this research project is also gratefully acknowledged. The opinions and results presented in this paper are those of the authors and do not reflect the views of the supporting agencies.

FinansörlerFinansör numarası
Turkish Railways Administration
Texas Council for Developmental Disabilities
Türkiye Bilimsel ve Teknolojik Araştırma Kurumu114M332

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