Comparative Analysis of RC Irregular Buildings Designed According toDifferent Seismic Design Codes

摘要

The present paper presents a comparison of seismic provisions of three seismic design codes, the Philippinecode, Eurocode 8 and the American code, to the most common ordinary residential frames of standard occupancy. Regularand irregular reinforced concrete frames were analyzed and compared for four storey building types. The responsespectrum and the seismic parameters of NSCP 2010 were considered for the horizontal load action with different loadcombinations. Response spectrum analysis and equivalent lateral force analysis were performed using SAP2000 softwarepackage. Five representative columns for each RC frame structure were analyzed. Based on the results of column axialload - bending moment interaction diagrams, EC8 was found to be conservative when compared to NSCP 2010 and 2009IBC. The conclusion is that for the design and analysis of ordinary RC residential buildings with certain irregularity, EC8provisions were considered to be safer.