| Title |
Performance Evaluation of Externally Prestressed Low-Rise RC Structures Against Collapse |
| Authors |
Shin Woo-Seung ; Kim Jin-Koo |
| Keywords |
Post-tension ; RC Structures ; Progressive Collapse ; Seismic Performance |
| Abstract |
These days the safety against progressive collapse is considered as important as safety against earthquakes in some structures. This study investigates the seismic and progressive collapse performance of 3- and 6-story RC framed structures reinforced by post-tensioned strands. The effects of both parallel and X-type installation schemes for strands were compared. According to nonlinear static and dynamic analysis results, the nonseismic-designed model structures were vulnerable to progressive collapse caused by sudden loss of a first story column. Especially the model structures designed with prestressed tendons were more vulnerable to progressive collapse because of smaller member sizes. However the RC structures reinforced by external strands along floor girders showed stable behavior against progressive collapse. The seismic performance was also slightly enhanced as a result of the reinforcement. |