충전성을 개선한 각형CFT구조의 기둥-보 접합부 구조적 거동Structural Behavior of Beam-to-Column Connections of Rectangular CFT Structures Improving Concrete Filling
- Authors
- 박제영; 이명재
- Issue Date
- 2012
- Publisher
- 대한건축학회
- Keywords
- 각형CFT; 기둥-보 접합부; 다이아프램; 충전성; 유한요소해석; Rectangular CFT; Beam-to-column Connection; Diaphragm; Concrete Filling; FEM
- Citation
- 대한건축학회논문집 구조계, v.28, no.11, pp 107 - 115
- Pages
- 9
- Journal Title
- 대한건축학회논문집 구조계
- Volume
- 28
- Number
- 11
- Start Page
- 107
- End Page
- 115
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/25832
- ISSN
- 1226-9107
- Abstract
- Concrete-Filled Tube is a concrete-filled steel tube structure. Steel tube confines the concrete to increase the compressive strength, and the concrete contains the buckling of the tube. CFT structures require a diaphragm to prevent buckling of steel at connections. An outer diaphragm has better concrete filling than a through diaphragm due to a large bore, but being larger than the through diagram, it has poorer constructability and cooperation with building equipment. In this study, a rectangular CFT structure that uses different types of diaphragms in its upper and lower connections to improve the concrete filling was tested and analyzed via the FEM program. The building structure had a floor slab that was unified with the upper diaphragm, so the outer diaphragm was placed at the upper bound. Moreover, the through diaphragmwas placed at the lower connection to avoid obstruction frombuilding equipment. The CFT structure with the improved concrete filling showed the same structural behavior as the CFT structure with the use of the same type of diaphragms at the upper and lower connections.
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