| Title |
Improved Nonlinear Column Model for Performance-Based Seismic Evaluation of Low-Rise RC Piloti Residential Buildings |
| Authors |
모상영(Mo, Sang-Yeong) ; 김성현(Kim, Sung-Hyun) ; 강수민(Kang, Su-Min) |
| DOI |
https://doi.org/10.5659/JAIK.2026.42.9.329 |
| Keywords |
Pilotis; Seismic Performance Evaluation; Concentrated Plastic Hinge Model; Compression Zone Failure Mechanism |
| Abstract |
This study proposes an improved nonlinear analysis model for columns to support reliable seismic performance evaluation of existing low-rise
RC pilotis structures, which are highly vulnerable to earthquakes. Although current performance-based seismic design guidelines provide
comprehensive evaluation procedures, their practical application to existing low-rise buildings is limited by complex modeling requirements. To
address this issue, a compression zone failure mechanism model originally developed for beams was extended to columns by incorporating
column-specific characteristics. The proposed model was validated by comparing plastic rotation angles with existing models using
experimental data from previous studies. In addition, nonlinear static analyses were performed on a prototype low-rise pilotis building based
on damage observed during the Pohang earthquake. The results showed that the proposed model effectively captured the influence of key
parameters, including axial load and reinforcement ratio, on column behavior. Overall, the proposed model offers a unified and practical
approach for seismic evaluation while maintaining reliability comparable to existing methods. |