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The paper is concerned with the design of plane, perforated shear walls, loaded in their plane by forces transverse to the axis of the wall. Attention is given to the reduction in wall flexural stiffness due to perforation, and to the stress distribution in the wall. The design data, presented in the form of charts, are based on analysis by the stiffness method in which the perforated wall is represented by wide columns connected by beams.
The paper describes an experimental and theoretical study of the behaviour of folded plate structures, in which particular attention is given to examining the influence of
end diaphragm restraint upon the structural action. The end diaphragms used in the experimental investigations were mounted on special bearings which ensured that the diaphragms imposed no ‘overall’ longitudinal force or longitudinal bending moment upon the folded plate structure. The diaphragms therefore provided a minimum of overall restraint whilst ensuring that the ends of component plate remained in the plane of the diaphragm. Nevertheless this degree of restraint is considerably more than that assumed in the elasticity method of analysis and it is shown this method will generally underestimate the overall rigidity of a folded plate structure. The paper also establishes that the finite element method can accurately predict the behaviour of folded plate structures.
K.C. Rockey and H.R. Evans
The paper describes experiments conducted on the use of the high-strength friction-grip bolt to provide the shear connection between the concrete slab and steel beam in
composite construction. The first part deals with static push-out tests to determine the strength of such connectors. The second describes tests on beams, some with precast and others with cast in situ slabs using them. The results show that the high-strength friction-grip bolt can be used as an efficient connector in composite construction.
W.T. Marshall, H.M. Nelson and H.K. Banerjee