In this paper, to solve the problem that the seismic damage of reinforced concrete bridges’ RC piers under strong earthquake is often encountered at home and abroad. On the basis of the results of existing piers/columns seismic strengthening in the domestic and foreign, a new-type RC piers/columns seismic strengthening measures-Precast SFC shell segments wrap the plastic hinge region of RC piers/columns, which is developed. Then, the RC piers in the actual bridge was selected as a prototype, The validity of this RC piers/columns seismic strengthening measures is studied by comparative experimental study of the RC piers and the strengthened RC piers in the pseudo static tests, the experimental results showed the RC/columns pier seismic strengthening measures can enhance the bearing capacity and energy dissipation capacity of RC piers without changing their plastic hinge position. In additional, the nonlinear seismic time history response of the experimental RC piers reinforcement was analyzed and compared under the typical ground motion in different site conditions, which further verified the effectiveness of the new-type seismic strengthening measures.
Key words
RC piers/columns /
Precast SFC shell segment /
Seismic strengthening /
pseudo-static test /
strengthening efficiency
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