| Title |
Design of Steel Moment Frames Considering Progressive Collapse |
| Authors |
Kim Jin-Koo ; Park Jun-Hei |
| Keywords |
Special Steel Moment Frames ; Abnormal Loads ; Progressive Collapse ; Nonlinear Analysis ; Energy Based Design |
| Abstract |
In this study the progressive collapse potential of three- and nine-story special steel moment frames designed in accordance with current design code was evaluated, and the effect of increasing the size of beams was observed. It was observed that, as expected, the progressive collapse potential decreased as the size of beams increased. Then the size of beams required to satisfy the failure criteria for progressive collapse was obtained using the equilibrium of the external work done by gravity load due to loss of a column and the internal work done by plastic rotation of beams. According to the nonlinear dynamic analysis results, the model structures designed only for normal load turned out to have strong potential for progressive collapse whereas the structures designed by energy concept for progressive collapse satisfied the failure criterion recommended by the GSA guideline. |