ElnashaiEtAl2004_Emp

Description

USA and Greece Empirical approach. Observed damage of bridges after the Northridge and Kobe Earthquakes $Paragraph$Analytical approach. Hazard: 7 recorded accelerograms. Exposure: The prototype bridge is straight 60 metres long and 16 metres wide and is constructed in northern Greece. The superstructure is supported by the abutments and by two rows of piers. The superstructure is a hollow prestressed concrete deck, while the piers comprise three reinforced concrete circular columns directly connected to the deck, which is connected to the abutments by elastic bearings. $Paragraph$In the analytical approach, the uncertainties associated with the displacement capacity of the bridge are accounted for by assuming variable material properties. $Paragraph$No subdivision of the bridges into different structural forms is attempted, due to the lack of a viable sample per structural form. The vulnerability functions are meant to be average values for populations of bridges. However it is obvious that vulnerability curves depend on the seismic code and the structural types of the bridges used. $Paragraph$The bridge vulnerability curves were obtained assuming that a certain limit state is reached when one of the two piers attains that limit state, which is a conservative assumption. Fragility parameters: Medians=[0.315, 0.516, 0.554, 0.617, 0.732], Standard deviations=[0.194, 0.249, 0.239, 0.255, 0.239] Syner-G taxonomy: MM1= MM2= TD1= TD2= DC= DSS= PDC= TC1= NP= TS1= TS2= HP= Sp= SC=None TCa= BC= LS= Taxonomy link: https://publications.jrc.ec.europa.eu/repository/bitstream/JRC80560/lbna25883enn.pdf

Reference

SYNER-G Report: https://cordis.europa.eu/docs/results/244061/final1-syner-g-final-report.pdf. | Elnashai A.S., Borzi B., Vlachos S., Deformation-based vulnerability functions for RC bridges, Structural Engineering, 17(2), 215-244, 2004.

License

This work is shared in an open access format according to the European Commission's guidelines for the FP7-ENV-2009-1 projects. See also https://cordis.europa.eu/project/id/244061/results