In this research, a few references was found the study on the preflex panel attached to the slab, so that action by the free Flex panel to consider only the uplift force applied to the bridge slab reinforcement width, reinforcement length, reinforced by a variable before / after ability to work deflection and cross-sectional force of slab bridge was considered .MIDAS program to interpret slab bridge use of a universal interpretation.
As this research for enhanced slab bridge by preflex panel, the results of research were the following:
1. Preflex panel method has a reinforcement effect for the shear stress compared with another method.
2. Deflection and cross-sectional force was the difference in some reinforcement, but the maximum efficiency was similarly enhanced efficiency with increasing reinforcement width, reinforcement length and reinforcement rate.
3. Construction error did not occur, the reinforcement effect of the deflection and the cross-sectional force was shown as almost linear graph is easy to predict.
4. Even tensile bar was used by PS wire of preflex panel in a some parts of construction, the PS wire of preflex was only considered by uplift force because a few researches was processed.