한국지진공학회:학술대회논문집 (Proceedings of the Earthquake Engineering Society of Korea Conference)
- 한국지진공학회 2005년도 학술발표회 논문집
- /
- Pages.361-371
- /
- 2005
콘크리트 구속 조건의 강도 증진 영향 연구
Increasing effect of concrete strength by confined conditions
- 발행 : 2005.03.18
초록
The confined concrete subjected multi-axial stresses have been known as the fact it increases strength of concrete significantly compared with unconfined concrete. Many researchers have studied in confining effects of concrete, and now are studying in many fields. Although many researches about confined concrete using FRP have been studied recently, it is difficult to apply concrete confined by FRP in real structures because FRP is a brittle material. To investigate the influence of concrete strength and ductility increased by confining stiffness in steel, this study was tested and compared with 51 specimens confined by different shapes and thicknesses of steel tube. This test verified the increasement of strength and ductility in confined concrete. Also, analyzing the experimental data by regression method, this study provides stress-strain model about CSS and R4S considering effect of confinement stiffness on the stress-strain relations of concrete.
키워드