| Title |
Evaluation on Flexural Behavior and Proposals of Stiffness Model for Synthetic Resin Formworks |
| Authors |
남경용(Nam, Kyung-Yong) ; 이혜진(Lee, Hye-Jin) ; 양근혁(Yang, Keun-Hyeok) ; 문주현(Mun, Ju-Hyun) |
| DOI |
https://doi.org/10.5659/JAIK.2020.36.8.153 |
| Keywords |
Synthetic Resin Formwork; Euro Form; Flexural Behavior; Stiffness |
| 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 ( ) 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 model, design chart is developed for determining the thickness of formwork
with different sizes and material properties. |