BEHAVIOUR OF CYCLICALLY LOADED SHEAR WALLS

Behaviour of reinforced concrete shear walls under cyclic loading is investigated. Results of a parametric study using a nonlinear finite element analysis program, performed on the NUPEC large-scale flanged shear wall, are presented underscoring the mechanisms influencing both the observed and calculated responses. Details of an ongoing experimental program on the behaviour of 3-D shear walls subjected to reversed cyclic loading are provided. The preliminary constitutive models used in the analysis programs, for reinforced concrete subjected to arbitrary loading conditions including cyclic loading, are reviewed. The analytical results of shear walls are compared to the experimentally observed behaviour, demonstrating reasonably accurate simulations of behaviour. The results of a series of panel tests are used to identify the aspects of concrete modeling that are in need of further study and refinement