LYS semi-supported plate as a ductile end-diaphragm in steel girder bridges

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Sigma Mühendislik ve Fen Bilimleri Dergisi
Volume:42 Issue:1
LYS semi-supported plate as a ductile end-diaphragm in steel girder bridges

LYS semi-supported plate as a ductile end-diaphragm in steel girder bridges

Authors : Morteza Jamshidi

Pages : 70-81

View : 35 | Download : 43

Publication Date : 2024-02-27

Article Type : Research Paper

Abstract :Ductile end diaphragms have been suggested as an appropriate device in the past to improve the seismic response of steel girder bridges. This paper investigates the efficiency of the seis-mic design strategy that utilized a slab-connected steel plate as a ductile diaphragm in the superstructure. Protecting the main girder from typically reported damage and mitigating the transferred lateral load to the non-ductile substructures are the main objectives of this study. The results show that a slab-connected thin steel plate with low yielding stress (LYS) can miti-gate the force demand on the non-ductile substructures and act as a structural fuse. It can also reduce the transverse displacement of the superstructure and, consequently, prevent the end of the main girder from buckling and/or yielding.
Keywords : Steel Bridge, Steel Plate, End Diaphragm, Seismic Design, Low Yield Steel

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