Experimental research on semi-rigid beam-to-column connections in steel frames for seismic conditions

This paper gives M-theta(r) hysteretic curves and studies seismic behavior. It analyzes several joints characteristics of dissipation of energy through pseudo-static experiments on seven full-scale specimens under cyclic load. The joints are top and seat angle semirigid connections, top and seat angle with double web angle semi-rigid connections and extended-end-plate semi-rigid connections in steel frames. Strain condition of the part in beam-to-column joints and deformation condition of panel zone of joints have been recorded in the experiment.