Shaking Table Test on Seismic Response of Isolated Bridge

Abstract

In order to investigate isolation effectiveness on seismic performance of the continuous rigid frame bridge, shaking table test with nine sub-tables on 1/10 scaled reinforced concrete rigid frame bridge specimen was performed. The experimental results demonstrate that isolation devices provide flexibility to transform natural period of the scaled model, and additional it can improve the ability of energy dissipation when lead is used. The initial first frequency is 8.17Hz for plate-type rubber bearing and 9.12Hz for leading rubber bearing. The plate rubber bearing and lead-rubber bearing are quite sensitive to seismic wave frequency. The use of various isolation devices affects response of the bridge model. The results show that the more difference in the isolation devices, the more difference in response. Moreover, isolation effect of lead-rubber bearing show obviously more advantage than the one of plate-type rubber bearing, especially in controlling responses of the bridge during major earthquakes.

Real-time hybrid simulations vs shaking table tests: Case study of a fibre-reinforced bearings isolated building under seismic loading

“…This was previously demonstrated (e.g. ), and the dynamic response of full‐scale complex isolated bridges was predicted with acceptable accuracy by means of simple scale model testing. The procedure described in previous studies is the same as the one considered here because the first assessment of the dynamic behaviour of a FRBs isolated building is given by means of small scale RTHSs and STTs.…”