Evaluation of ground motion intensity measures for the fragility curves of ordinary highway bridges in Turkey

Date

2010-12-01

Author

Avsar, O.
Yakut, Ahmet

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Four different ground motion (GM) intensity measures (IMs) have been considered to find out their correlation with the seismic damage of the ordinary highway bridges in Turkey. The investigated GM IMs are the peak ground acceleration (PGA), peak ground velocity (PGV), PGA/PGV and acceleration spectrum intensity (ASI). A number of analytical bridge models were generated to represent the typical features of the ordinary highway bridges in Turkey. After the development of 3D analytical models, nonlinear response history analyses of these bridges were performed under a suit of GMs considering biaxial seismic excitation. Superstructure displacement and column curvature in both principal axes were considered to be the engineering demand parameters for quantifying the bridge seismic damage. Engineering demand parameters were compared with the corresponding ground motion intensity parameters and correlation between them were investigated through coefficient of determination to realize the most appropriate IMs to be utilized in the development of analytical fragility curves. The results revealed that IMs of ASI and PGV have a better correlation with the seismic damage of highway bridges in comparison with PGA and PGA/PGV.

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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84867178263&origin=inward
https://hdl.handle.net/11511/107293

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Department of Civil Engineering, Conference / Seminar