An Experimental Evaluation on Flexural Performance of Light-Weight Void Composite Floor using GFRP

GFRP를 이용한 경량합성바닥의 휨성능에 대한 실험적 평가

  • 류재호 (고려대학교 건축사회환경공학부) ;
  • 박세호 (고려대학교 건축사회환경공학부) ;
  • 주영규 (고려대학교 건축사회환경공학부) ;
  • 김상대 (고려대학교 건축사회환경공학부)
  • Received : 2010.10.15
  • Accepted : 2011.02.17
  • Published : 2011.02.28

Abstract

To obtain a lower story height with a long span and better fire resistance, a new composite floor system using GFRP (glass-fiber-reinforced plastics) was proposed. This floor system consists of asymmetric steel with a web opening, a hollow core ball, concrete, and GFRP. To evaluate the flexural performance of the new composite floor system, an experiment was conducted. The test parameters were the presence of GFRP, the void ratio in relation to the hollow core balls, and the web opening. The test results showed that the resistance and stiffness of the specimen with GFRP were 10% higher than those of the reference specimen, and that fully composite action was accomplished up to the yielding point. After the attainment of the yield strength, the ductility of the specimen was reduced due to the stress concentration around the web openings. The slip between the concrete and steel beam, however, was small. Thus, in the design of the proposed new floor systems, it is desirable that the calculated resistance be reduced by 15%, for safety.

Acknowledgement

Supported by : 한국연구재단

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