08-10-2014, 04:33 PM
Studied using cyclic displacement loading. The connection details are designed using three different force models, namely (a) Truss Analogy Model, (b) Modified Three steel exterior-joint beam-column sub-assemblages with strong column weak beam are Truss Analogy Model, and © Improved Truss Analogy Model. The first and the third are adopted from literature, and the second is suggested in this study. This study also presents a simple beam-to-column connection design method with beam flange as well as cover plate welded to the column flange. The experimental study concludes that connection designs with single outer rib plate are always vulnerable to premature failure. On the other hand, connections with rib plates on both sides of the beam flange responded well. Two of the subassemblages are repaired with a pair of vertical rib plates on each side of the two beam flanges. In all the five cases, an average plastic rotation of about 0.02 radians only was developed in the beam as against 0.03 radians expected for connections suitable for high seismic areas. Hence, these conn