| Title |
Sub-assemblage Structure Model for Progressive Collapse Resistance Performance Analysis |
| Authors |
나영수(Na, Young-Soo) ; 노삼영(Noh, Sam-Young) ; 이업(Li, Ye) |
| DOI |
https://doi.org/10.5659/JAIK.2021.37.9.155 |
| Keywords |
Progressive collapse; Alternated Path Method; Intermediate Moment Resisting Frame; Sub-assemblage Structure Model; Substitute Column |
| Abstract |
For the analysis of the progressive collapse resistance performance of a structure, it is recommended to use a 3-D structure model that
considers the 3-D effect of the slab, the continuity of the adjacent spans, and the redistribution of stress through the alternated path of the
upper stories. Although a structure is modeled with reduced modeling concepts, the large size of the target structure still requires a lot of
time on modeling and analysis. In this study, the sub-assemblage structure modeling concept was presented. The area of the sub-assemblage
structure was determined by the analysis of the number of affected spans using the stress variation in the members before and after the
sudden column removal in the entire structure model. The modeling concept was suggested in three levels according to the degree of the
modelled detail of members located in the outer area of the sub-assemblage structure. They are evaluated by comparing the load-displacement
relationship, girder stresses and plastic hinging locations with those resulted by the simulation of entire structure model. |