Road decking panel having concrete crack protection and manufacture convenience

摘要

The present invention provides a simple and easy-to-fabricate laminating board using upper and lower reinforcing frames with a symmetrical structure to prevent cracking of the concrete layer by combining concrete with orthogonal reinforcing bars and bending lines bent upward and downward. A preferred embodiment of the present invention is a laminated board comprising a pair of end plates arranged in a face-to-face relation, a pair of side plates joined to one end of a pair of end plates, A pair of upper and lower reinforcing frame members arranged to face each other and face each other; An upper and a lower longitudinal steel bar which are bent at both ends and joined to a pair of end plates, respectively, and arranged in a plurality of widthwise directions of the flat plate; A lower bending rope having a plurality of lower bending roots which are bent upward and downward at a predetermined interval along the longitudinal direction of the base plate and are joined to the pair of end plates at both ends thereof so as to be parallel to the lower root reinforcement; A second cross reinforcement rods arranged in a direction perpendicular to the lower stepless reinforcement rods and disposed in contact with the uppermost and lowermost ridges of the lower bending roots alternately; And a concrete layer filled with concrete between the pair of upper and lower reinforcing frame members to fill up the upper and lower longitudinal steel bars, the upper and lower bent steel bars and the first and second cross reinforcement bars.