Abstract :
Bridges are considered as life line structures. During an earthquake, dynamic forces induce inertial force into the structure which results in damage to lateral load resisting members, which are typically piers in bridges. Hollow bridge columns are required when longer spans are constructed or taller piers are needed or both. The hollow piers are subjected to high seismic demand, hence it is essential to evaluate their seismic performance. In this research the energy dissipation capacity of CFRP retrofitted RC circular hollow bridge column under seismic demand has been calculated. A representative prototype dimensions were established from the available bridge drawings and a scale down hollow column model was prepared using similitude analysis. The model column was subjected to unknown damage. The damaged model was then retrofitted by using CFRP wrap. The time period of the model column was calculated and the retrofitted column was subjected to quasi-static cyclic testing.
Keyword :
CFRP, Energy dissipation, Hollow bridge column, Seismic demand, Quasi-static cyclic testing