| Title |
Pseudo Dynamic Test Study on Seismic Performance Evaluation of RC Columns Retrofitted by PolyUrea |
| Authors |
조철민(Cho, Chul Min) ; 이두성(Lee, Doo Sung) ; 김태균(Kim, Tae Kyun) ; 김장호(Kim, Jang-Ho Jay) |
| DOI |
https://doi.org/10.12652/Ksce.2017.37.2.0289 |
| Keywords |
내진;보수;보강;폴리우레아;일축압축실험;유사동적실험 Seismic;Strength;Retrofitting;PolyUrea;Uniaxial Compression Test;Pseudo Dynamic Test |
| Abstract |
As earthquakes have frequently happened all over the world, huge losses of human life and property have occurred. Therefore, retrofitting and strengthen technologies of non-seismically designed structures in Korea are urgent. Also, there has been a growing interest about seismic retrofitting, where researches on the topic have been actively pursued in Korea. The study results showed that ductility inducing retrofitting method is more superior stiffness inducing method. In Japan, Super Reinforcement with Flexibility (SRF) was introduced. Therefore, in this study, seismic performance evaluation was performed through pseudo dynamic test and uniaxial compression test for RC column retrofitted by PolyUrea for ductility inducing retrofitting material. Uniaxial compression test results showed that strength of all specimens retrofitted by PolyUrea was higher than that of RC specimens. Also, all specimens retrofitted by PolyUrea also showed ductile fracture behavior. In pseudo dynamic test, by appling real earthquake record, the seismic behavior of RC column reinforced by PolyUrea was evaluated through relative displacement, reinforcement strain, displacement ductility, and dissipation energy. The results showed that PolyUrea helped to enhance seismic performance of RC columns. |