STUDY ON BEHAVIOR OF REINFORCED CONCRETE SLABS SUBJECTED TO IMPACT OF ACCIDENTALLY FALLING DURING CONSTRUCTION (PART 2) : A METHOD FOR EVALUATING DEBRIS SCATTERING IN DECK-PLATE BASED PREVENTION

Abstract

This study proposes a simple prediction method to judge whether deck plates detachment and debris scattering occur in reinforced concrete slabs subjected to accidental falling-object impact during construction. The method targets a previously proposed anchorage system with a folded deck-plate edge embedded in concrete. Finite-element analysis of scaled impact tests showed that concrete and reinforcing bars dominated energy absorption, whereas the deck plate contributed only about 5%. A penetration-depth equation was derived from energy balance, and detachment was judged from the geometric relationship between penetration depth and deck-plate withdrawal. The method accurately predicted detachment without further experiments or numerical analysis.