Evaluation of seismic performance of as?built and retrofitted reinforced concrete frame structures with LAP splice deficiencies

Several studies have looked at the development of hinge models to simulate hysteretic response flexure- and shear-critical reinforced concrete (RC) beam-column components from damage initiation onset gravity collapse. However, few been conducted develop similar for older type bond-critical components. First, using existing experimental data, this paper describes calibration simple efficient inelastic as-built retrofitted splice-deficient columns. Subsequently, demonstrate applicability models, seismic performance fibre-reinforced polymer (FRP) -retrofitted two- four-story nonductile RC frame buildings with columns are assessed nonlinear dynamic analysis procedures. The results show that may a lower collapse potential than columns, implying in certain cases longer splice length actually worsen performance. According analyses, local retrofitting can significantly improve buildings. Contrary presented study, significant U.S. evaluation methodology buildings, FEMA P-2018, indicates as Modifications proposed P-2018 provisions. modelling approach recommended incorporation into ASCE/SEI 41, engineering practice future research.