Research on seismic behavior of BFRP-confined reinforced concrete circular and square columns
To investigate the seismic behavior of reinforced concrete(RC)circular and square columns confined with basalt fiber reinforced polymer(BFRP),three confined and control columns were tested under low cyclic lateral loading,respectively.The influence of parameters such as axial compression ratio and cross section shape on the seismic behavior was investigated.The results show that the col-umns present flexural failure mode after confinement.The load carrying capacity,ductility and energy dissipation capacity of columns are improved.With the increase of axial compression ratio,the load carrying capacity of confined columns rises and the ductility and energy dissipation capacity drop.With the same cross section area and longitudinal reinforcement ratio,the peak load and elastic stiff-ness of the confined square columns are larger than those of the confined circular columns,but the de-formation and energy dissipation capacity of the former are slightly smaller than those of the latter.Finally,the seismic bearing capacities of BFRP-confined RC circular and square columns are calculated with relatively high accuracy,respectively.
万方数据
维普
