Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Structural Strength of Beam-to-CFT Connections with Vertical Diaphragm

수직다이아프램을 사용한 충전형 각형강관기둥 접합부의 내력평가

  • 김경태 (기술연구소, (주)창민우구조컨설탄트) ;
  • 이헌우 (기술연구소, (주)창민우구조컨설탄트) ;
  • 김영기 ((주)이지파트너) ;
  • 김태진 ((주)창민우구조컨설탄트) ;
  • 김종호 ((주)창민우구조컨설탄트)
  • Received : 2017.04.04
  • Accepted : 2017.05.23
  • Published : 2017.06.27
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Abstract

This paper investigates structural characteristics of internal vertical diaphragm and its influence on the connection strength between concrete filled tubular(CFT) column and beam. CFT columns are hybrids that combine two materials in one member. They have the benefits of steel for high tensile strength and ductility and of concrete for high compressive strength and stiffness. Analytical method of the flexural strength of vertical diaphragm to account moment transfer between panel zones is presented using yield line theory. Connection design is verified by a set of monotonic tests and numerical analysis with different diaphragm thicknesses. Plastic zones of CFT flange was found and matched closely to FEM results. Both analytical and experimental results showed good agreement that vertical diaphragm effectively alleviates the stress and transfer the force.

본 연구에서는 각형 강관 내부에 수직 다이아프램이 적용된 CFT 기둥 접합부의 구조적 특성에 대해 알아보았다. 각형 CFT 기둥의 거동을 파악하기 위해 실대형 3개 실험체를 제작하여 실험을 수행하였다. 유한요소해석을 통해 다이아프램의 거동을 확인하였으며 접합부 내력식을 제안하였다.

Keywords

References

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