Author: Preece, B W;Kwiecinski, M;Zienkiewicz, O C
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Preece, B W;Kwiecinski, M;Zienkiewicz, O C
The objective of this study is to analyse an annular slab fixed at the outer edge and supported by equally spaced columns on the inner edge. The thin plate theory is used in this analysis. The results are presented in the forms of a table and charts which show that deflexion and stress resultants decrease as the ratio of the inner radius to the outer radius increases. The number of columns, with the range of four to sixteen, has not much effect on maximum radial bending moment, but the maximum magnitudes of the other stress resultants and deflexion decrease as the column number increases. Reducing the column width increases the shearing forces and the transverse bending moment. However, the deflexion and the radial bending moment are insensitive to the variation of the column width.
The lateral buckling of beams is a complicated phenomenon, the maximum elastic bending stress necessary to cause buckling being dependent upon the geometrical and material properties of the beam, the type and position of the loading and also the support conditions. This paper presents a design procedure which enables all of these factors to be allowed for in an accurate, yet simple and direct manner, for 41 different cases of loading and support. The proposed method is both more accurate and more versatile than existing methods used in design codes. D.A. Nethercot and K.C. Rockey
At the invitation of the Council, Mr. Edmund Happold (F) prepared a paper 'The Household Cavalry Barracks, Knightsbridge' for presentation at the Public Works Congress in November 1970 in the session sponsored by the Institution. The text of the paper and of the discussion among the small audience that followed its presentation appears in the Conference Proceedings which is shortly to be published. Edmund Happold