Performance of Large Seismic Steel Moment Connections Under Cyclic Loads

Cyclic behavior of recently completed 18 tests in full-size beam-to-column steel moment connections is described. Main emphasis is placed on moment connections of beams to column flanges having plastic moduli of the flanges alone less than 70 percent of the respective plastic moduli of the total beam section. Also considered, cyclic behavior of improved beam-to-column web moment connections as well as some unconventional beam-to-column flange moment connections.