Modelling the Influence of Composite Stiffness on Energy Dissipation in Reinforced Composite Concrete Floors / Modelowanie Wp?ywu Sztywnosci Zespolenia Na Rozpraszanie Energii W Warstwie Kontaktowej Zelbetowych Stropów Zespolonych

摘要

A continuous contact layer exists between the top and bottom layer of concrete composite reinforced floors. The contact layer is characterised by linear elasticity and frictional properties. In this paper a model of single degree of freedom of composite floor is determined. The model assumes that the restoring forces and the non-conservative internal friction forces dissipating energy are produced within the contact layer. A hysteresis loop is created in the process of static loading and unloading of the model, with the energy absorption coefficient being defined on this basis. The value of the coefficient is rising along with the growing stiffness of the composite.