الفهرس | Only 14 pages are availabe for public view |
Abstract Cantilevers having shear span to depth ratio less than or equal to one are termed as brackets, corbels, or short cantilevers. Since there is a growing interest ill building construction to use precast concrete elements, short cantilevers became very popular. Short cantilevers may transmit axial loads, moments , shear and torsion, (either singly or in combination) , resulting from dead and live loads, earthquake and wind loads, handling and erection stresses , shrinkage and creep of concrete and certain other loads resulting from construction and erection procedures. Little information is available in the literature on the behavior or reinforced concrete corbels under the effect of eccentric loading. In this research an experimental, and theoretical investigation was performed to study the general deformation behavior of doubly symmetrically loaded reinforced concrete corbels. Four parameters were varied in the study namely,compressive concrete strength , breadth of corbels, height at corbel end, and presence of vertical stirrups. A theoretical model using finite element method is presented for predicting the general deformational behavior , cracking and failure loads. Comparison was made between experimental test results and those obtained theoretically. Finally the results of experimental ,and theoretical studies were combined with available information to formulate some recommendations on how to design reinforced concrete corbels. Key words : Reinforced concrete , Concrete strength, Short cantilevers, Corbels, Stirrups |