| Title |
Progressive Collapse Resisting Capacity of Diagrid Structural System |
| Authors |
Kim Jin-Koo ; Lee Young-Ho |
| Keywords |
Diagrid Structural System ; Tubular System ; Progressive Collapse ; Nonlinear Analysis |
| Abstract |
In this study the progressive collapse potential of diagrid structure system buildings was evaluated by nonlinear static and dynamic analyses. 36- and 54-story diagrid structures with and without corner columns were designed as analysis models and progressive collapse analyses were carried out by removing first-story columns. The analysis results were compared with those of the same-sized tubular structures. According to the analysis results progressive collapse tends to occur when vertical members corresponding to more than 10% of all member cross-sectional areas are removed from a side of the diagrid and tubular structures. When the diagonals located around a corner are removed, the number is reduced to 8%. It was observed that the corner columns in the diagrid system help prevent the failed members from propagating all around the perimeter. |