Destruction of concrete beams with metal and composite reinforcement under impulse action

This work presents results of integrated experimental and numerical study of destruction of reinforced concrete beam made of concrete and fiber concrete under short-term dynamic loading. Experimental studies were carried out using pile driver. Short-term dynamic loading acting on a beam was applied by falling weight, 450 kg, from the height 700 mm. The value of dynamic load in experiments was defined by means of force gauge, linear displacement transducers were used to define linear displacements. Numerical simulation was held three-dimensionally within phenomenological approach of continuum mechanics, the reinforcing elements were clearly defined. Finite element method was modified to solve dynamic tasks. Impact of load on a beam in calculations was replaced by impulse. The dependence of impulse on time was defined from the experiment. The influence of reinforcement on deformation and beam destruction was studied. Correlation of experimental and numerical data was performed.