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U-플랜지 트러스 복합보의 휨 내력에 대한 실험 연구 KCI 등재

Experimental Study on the Flexural Capacity of the U-Flanged Truss Hybrid Beam

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한국공간구조학회지 (JOURNAL OF THE KOREAN ASSOCIATION FOR AND SPATIAL STRUCTURES)
한국공간구조학회 (Korean Association for Spatial Structures)
초록

U-flanged truss beam is composed of u-shaped upper steel flange, lower steel plate of 8mm or more thickness, and connecting lattice bars welded on the upper and lower sides. The hybrid beam with U-flanged steel truss is made in the construction site through pouring the concrete, and designated as U-flanged truss hybrid beam. In this study the structural experiments on the 4 hybrid beams with the proposed basic shapes were performed, and the flexural capacities from the tests were compared with those from the theoretical approach. The failure modes of each specimen were quite similar. The peak load was reached with the ductile behavior after yielding, and the failure occurred through the concrete crushing. The considerable increasement of deformation was observed up to the concrete crushing. The composite action of concrete and steel member was considered to be reliable from the behavior of specimens. The flexural strength of hybrid beam has been evaluated exactly using the calculation method applied in the boubly reinforced concrete beam. The placement of additional rebars in the bottom instead of upper side is proposed for the efficient design of U-flanged truss hybrid beam.

목차
Abstract
 1. 서론
 2. 실험 계획
  2.1 실험체 계획
  2.2 가력 방법 및 측정 방법
 3. 실험 결과 및 분석
  3.1 금속 재료 인장 강도 시험
  3.2 콘크리트 압축 강도 시험
  3.3 파괴 양상
  3.4 힘-변위 관계
  3.5 기존 설계식을 이용한 휨 강도 평가
 4. 결론
 References
저자
  • 오명호(국립목포대학교 건축공학과) | Oh Myoung Ho (Dept. of Architectural Engineering, Mokpo National Univ.)
  • 김영호(엔테이지) | Kim Young Ho (NTAGE)
  • 김명한(국립목포대학교 건축공학과) | Kim Myeong Han (Dept. of Architectural Engineering, Mokpo National Univ.) 교신저자