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The Effects of BFRP Application on Seismic Capacity of Prefabricated Bridge Columns

Prefabricated segmental bridge columns are increasingly used in bridge engineering these years. The basalt fiber reinforced polymer (BFRP) material is usually applied to wrap the vulnerable portion of bridge columns for the purpose of improving their mechanical properties. This paper investigates the effects of BFRP on the seismic capacity of prefabricated segmental columns. Finite element models of three prefabricated bridge columns, with different heights of BFRP jacket and without BFRP, were developed. The hysteresis behavior of the columns under cyclic loading was comparatively analyzed. The results show that the BFRP jacket has an increase effect on the lateral stiffness and load-carrying capacity of the segmental bridge columns under cyclic loading. The seismic capacity of prefabricated segmental column with the bottom segment wrapped with BFRP is similar to the column with two segments wrapped with BFRP.