SEISMIC EVALUATION OF AVAILABLE RETROFITTING METHODS FOR NON-DUCTILE RC FRAMES USING ANNS

reinforced concrete frames buit with out seismic provisions do not satisfy the minimum requirements of the capacity design pholosophy. These frames possess a number of structural deficiencies including inadequate shear capacity poorly reinforced joints deficient lap splice lengths and insufficient buckling and confinement reinforcement. these frames are characterized by inadequate ductility which is one of the key performance indicators in seismic design of RC structures. as a consequence of poor reinforcement detailing lack of transverse reinforcement in the joint region as well as absence of any capacity design principles brittle failure mechanisms are expected.

Keywords:

seismic evaluation , retrofit , reinforced concrete , artificial neural networks