|
Title |
Prediction of Compressive Strength of Circular CFT Confined with Braided GFRP Tube
|
|
Authors |
권순철(Sun-Chul Gwon) ; 김선희(Sun-Hee Kim) ; 최원창(Won-Chang Choi) |
|
DOI |
https://doi.org/10.4334/JKCI.2020.32.2.117 |
|
Keywords |
콘크리트; 구속된 충전강관; 구속효과; 유리섬유복합체; 압축강도 concrete; CCFT; confinement; GFRP; compressive strength |
|
Abstract |
Concrete confined with both steel pipe and fiber reinforced plastic tube termed as confined concrete filled steel tube. Confining effect from steel pipe and fiber reinforced plastic tube can increase compressive strength of confined concrete filled tube and is the main element for compression design. However, design code that clearly consider the combined confining effect of steel and FRP have not been established to date. This study propose the prediction equation for compressive strength of confined concrete filled tube. This paper presents the experimental results of the axial compression tests of concrete cylinders confined with both steel tube and glass fiber reinforced plastic tube. The main parameter of the compression test is the thickness of glass fiber reinforced plastic tubes (0, 2, 4, 6 mm). The test result shows that compressive strength increases with the thickness of glass fiber reinforced plastic tube. The prediction equation for compressive strength of confined concrete filled tube were proposed by analyzing the test results. In addition, the analytical results obtained using the proposed model and previously proposed model from other studies were compared with test results.
|