Behavior of Reactive Powder Concrete Slab with Smeared Reinforcement under Impact Load

摘要

This research focuses on studing the main points that concern on the behavior of reactive powder concrete (RPC) slab reinforced by smeared steel fibers subjected to impact load. The rectangular pulse force is used to represent an impact load. The material properties of the reactive powder concrete with the smeared reinforcement are simulated in the range of elastic behavior. The numerical modeling of the RPC slab structure with smeared steel fibers reinforcement is implemented by using ANSYS-LS-DYNA-software. The mode shapes and frequencies values of the RPC slab model are extracted by modal analysis. Impact load analysis of the RPC slab model with smeared steel fibers reinforcement is carried out for different cases. The effect of different amounts of smeared reinforcement and different locations of impact load are investigated. The results show that the first mode shape is governing impact load problems. Also, the effect of smeared reinforcement is so small within elastic range. In addition, it is observed there is a simple ratio between amount of smeared reinforcement and maximum displacement in force vibration.