| Title |
Loading Rate Effect on the Lateral Response of H-Shape Steel Column |
| Authors |
박민석(Park, Minseok) ; 김철영(Kim, Chul-Young) ; 한종욱(Han, Jongwook) ; 채윤병(Chae, Yunbyeong) |
| DOI |
https://doi.org/10.12652/Ksce.2021.41.6.0637 |
| Keywords |
가력 속도; 강재 기둥; 단조 가력 실험; 반복 가력 실험; 연성 가력 보 Loading rate; Steel column; Monotonic loading test; Cyclic loading test; Flexible loading beam |
| Abstract |
Dynamic response of structures can be evaluated experimentally by conducting cyclic loading tests. It has been known that steel materials are rate-dependent and the lateral response of a structure is significantly affected by the presence of axial force. However, the rate-dependency of steel column structures subjected to both axial and lateral loads has not been sufficiently studied yet due to the difficulty of controlling the axial force in a real-time manner during test. This study introduces an advanced way to apply the axial load
in real-time to a column specimen using the adaptive time series (ATS) compensator and the flexible loading beam (FLB), where the H-shape steel columns made of SS275 are used for monotonic and cyclic loading tests with various loading rates with axial loads. The lateral strength and post-yield response of the steel columns are compared for each of monotonic and cyclic loading tests. The
estimating equation of yield stress of various strain rate has proposed and finite element analysis were performed for comparison. |