2008 Volume 64 Issue 4 Pages 778-788
The purposes of this research were to confirm the seismic isolation effects of bearings in a PC road bridge of two continuous spans employing high-damping rubber bearings (seismic isolation bearings), based on 27 seismic waves observed in the entire bridgesystem, and to verify the validity of the seismic isolation bearing design method employed for this bridge.
The results indicated that the seismic isolation of the beams could be confirmed from the acceleration and relative displacement waveforms contained in seismic observations, and that the equivalent stiffness of the bearings, as calculated from seismic observation values, is consistent with the values employed at the design stage, and with the values obtained in vibration experiments using vibration generators. Therefore, this research was able to verify the validity of the design method employed for the seismic isolation bearings of this bridge.
Proceedings of the JSCE Earthquake Engineering Symposium
Environmental systems research
