| In the design of steel frame structure ,the engineers generally design the beam-column connection as so-called "rigid joint" to resist the structure's lateral and reduce the lateral displacement efficiently.But after the Northridge Earthquake ,these connections were found to be fractured in more than 200 moment-resisting steel frame buildings in the Los Angeles region. So the behavior of beam-column connections has received considerable attention and many investigators have studied many alternative connections.Therefore, the paper is dedicated to study a semi-rigid joint—top and seat angle with double web angles connection . The research of this connection under monotonic and cyclic loading is simulated using MSC.PATRAN/MARC software.The damage mechanism under the moment loading is studied and the hysteresis curve is obtained.At last,the hysteresis model is defined to academic numerical foundation. |
