Seismic Retrofit of Old Bridges With Seismic Isolation


Abstract eng:
A standard highway bridge has usually multi simple spans supported over piers by elastomeric bearings in Turkey. The bearings usually do not provide a positive connection but in contact with girder and pier by only gravitational forces. In this study, a model test bridge of about ½ scale have been shaken under low to moderate earth quakes to determine the change in response of the bridge with different seismic isolation configurations. Three configurations of bearings are elastomeric bearings, lead core bearings and ball rubber bearings. The bridges supported with lead rubber or ball rubber bearings’ deck displacements are dampened out in a short period of time compared to the tests of bridges with elastomeric bearings as expected. The seismic retrofit goals can be defined for the old bridges based on the target structural response in terms of displacements and forces.

Contributors:
Conference Title:
Conference Title:
16th World Conference on Earthquake Engineering
Conference Venue:
Santiago (CL)
Conference Dates:
2017-01-09 / 2017-01-13
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.



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 Record created 2017-01-18, last modified 2017-01-18


Original version of the author's contribution as presented on USB, paper 3788.:
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