Parametric Study on RC Frames for Strong Column-Weak Beam Behavior

Reinforced concrete moment resisting frames (RCMRF) are structural systems should have a potent design to assure proper energy dissipation capacity when subjected to seismic loading. In this design philosophy, generally used capacity design approach demands “strong-column / weak-beam� design to have good ductility and a preferable collapse mechanism in the structure. When only the flexural strength of lengthwise beams controls the overall response of a structure, RC beam-column link display ductile behaviour (with the joint panel region essentially remaining elastic). The failure mode having beams form hinges is considered the most favourable mode for ensuring good global energy-dissipation without much degradation of capacity at the connection. Though many international codes and even revised Indian code recommends the moment capacity ratio at beam column joint to be more than one, still there are many discrepancies among these codes.