Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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Evaluation on Flexural Behavior and Proposals of Stiffness Model for Synthetic Resin Formworks

합성수지 거푸집의 휨 성능평가 및 강성모델 제시

  • 남경용 (유탑엔지니어링건축사사무소) ;
  • 이혜진 (경기대 건축공학과 일반대학원) ;
  • 양근혁 (경기대 건축공학과) ;
  • 문주현 (경기대 건축공학과)
  • Received : 2020.05.12
  • Accepted : 2020.08.18
  • Published : 2020.08.30
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Abstract

The objective of this study is to examine the flexural behavior of the developed synthetic resin formwork and propose a simple model for their stiffness (K) for straightforwardly determining a thickness of form to achieve the minimum requirements specified in KS F 5651. The deflection of the synthetic resin formworks was commonly greater than that of the euro form, indicating a lower flexural stiffness for the former than the latter. As a result, all synthetic resin formwork tested did not meet the deflection requirement of KS F 5651. The stiffness model was derived from strain compatibility, force equilibrium, and curvature distributions along the form length on the basis of the elasticity theorem, considering the tie-holes given in the form. The proposed model predicts accurately the slope of the load-displacement curve obtained from the foams under flexure. Using the proposed K model, design chart is developed for determining the thickness of formwork with different sizes and material properties.

Keywords

References

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