Abstract: Experimental research on seismic performance under low reversed cyclic loading was carried out through eight pier specimens with application of steel fiber reinforced concrete (SFRC), in which three main parameters, including fiber volume content, the length of SFRC region and stirrup ratio were analyzed. Seismic performance of SFRC pier specimens, such as failure pattern, hysteretic characteristics, skeleton curves, ductility, energy dissipation, were studied. The results show that the SFRC pier with fiber volume content of 1.0% has advantage, in bearing capacity, hysteretic energy dissipation and ductility, over piers with other fiber volume contents; the pier specimen can keep sufficient seismic capacity when some stirrups are replaced by steel fiber; with appropriately local application of SFRC in the potential plastic hinge region instead of the entire pier body, the pier is able to sustain almost the same behavior, such as the ultimate bearing capacity, stiffness, ductility and energy dissipation capacity. A simplified formula is proposed for calculating reasonable length of the SFRC region, and the calculation accuracy of the formula is verified by the test results.
张于晔;魏红一;袁万城. 钢纤维混凝土局部增强桥墩抗震性能试验研究[J]. , 2012, 31(21): 102-107.
ZHANG Yu-ye;WEI Hong-yi;YUAN Wan-cheng. Experimental study on seismic behavior of bridge piers with local application of steel fiber reinforced concrete. , 2012, 31(21): 102-107.