Design of RC Framed Building Considering MCRs Recommended in Various International Codes

Abstract

Under seismic loading the structural systems that should be designed to ensure proper energy dissipation capacity are Reinforced concrete moment resisting frames (RCMRF). “Strong-column - weak-beam” design is currently in practice, demands to have collapse mechanism in the structure. RC column-beam connections display ductile behavior, when the response of a structure is controlled by the flexural strength of beams. The failure mode where the beams forms hinges is considered as most recommended mode for guaranteeing good global energy -dissipation without much degradation of capacity at the connections. In spite of the fact that numerous universal codes prescribe the moment capacity ratio at beam column joint to be more than one, still there are many errors among these codes and Indian standard is quiet on this viewpoint. The objective of this project work is to compare the design and resulting performances of framed building for various MCRs recommended in international codes and its effect on design (BOQ). In the present work using SAP 2000, pushover analysis is done for increasing moment capacity ratio at column beam joints and the effect on design (BOQ) and the resulting performances of the building are studied.