| Title |
Proposal of Stress-Strain Relations Considering Confined Effects for Various Composite Columns |
| Keywords |
CFT Column;CET Column;Confined effect;stress-strain relation;load-displacement relation;콘크리트 충전형 합성기둥;콘크리트 피복형 합성기둥;구속효과;응력-변형률 관계;하중-변위 관계 |
| Abstract |
Concrete filled steel tube and concrete encased steel tube columns are expected to have confined effects of concrete by steel and reinforced effects of local buckling by concrete. On the basis of confined state concrete models of previous researches, stress-strain and load-displacement relations of RC, CFT and CET columns are analyzed by steel ratio. After comparing analysis results with experimental results, Modified stress-strain relations are derived through evaluation the influence upon confined effects of concrete in each cases. Also, the modified stress-strain models are carried out to be compared with specified strength of various countries. |