EXPERIMENTAL STUDY ON SHEAR STRENGTH OF HOLLOW CYLINDRICAL SPUN CAST CONCRETE ELEMENTS; LOCAL BEHAVIOUR

A parametric experimental study was carried out to analyse the local load carrying capacity and behaviour of hollow cylindrical RC specimens. This topic is part of a research program of shear- bending behaviour of hollow cylindrical members. Local load carrying capacity is important in the case of partially loaded members. The parameters of loading setup and specimens under research were: the loaded area, distance between support elements, angle of loading/support elements, wall thickness, length of specimen, transversal and longitudinal reinforcement. Local failure modes of specimens were analysed through crack patterns and load- displacement diagrams. A mechanical model was created for calculation of the local behaviour of members. The model is able to calculate the resistance of hollow cylindrical members against partial loads. Analysis of the effect of local resistance utilization on shear- bending behaviour is possible using the proposed model.