DESIGN CRITERIA FOR MINIMUM WEIGHT OF SIMPLY SUPPORTED PLATE GIRDERS IN FLEXURE
Main Article Content
Abstract
This studies concerned with the optimum weight design of steel plate girders which have been used in long spans and heavy loads constructions. AISC-1989 Specification was used for design calculations, A computer program was prepared to achieve the optimum design. Flexure ard derlection were considered. The correlation between the clear depth (h) and the weight per unit length of the girder were established for different loads, spans, steel grades, minimum theoretical web thickness, and minimum practical web thickness. It was found that the optimum weight s obtained when the flange width is nearly equal to the clear distance (h) between the flanges. Also it was found that small difference in opumum weight is obtained when using the minimum theoretical web thickness and the minimum practical web thickness. It is also found that the steel grace variation results in minor effects on the optimum weight.
Article Details
Section
How to Cite
References
Basler K. and Thurlimann B., (1963), Strength of plate girders in bending, Trans. ASCE, vol. 121, Part II. P. 655.
Box M.T., Davies D. and Swan, W.H. (1969), Non-linear optimization techniques, ICI Ltd..
Bunday B.D., (1984), Basic optimization methods, Edward Arnold (Publishers) Ltd..
Hooke R. and Jeeves T.A., (1961), Diket Search solution of numerical and statistical problems, J. Assn. Comp. Mach, 8, 212-229.
Johnston B.G., Lin F.J. and Galambus T.V., (1986), Basic steel design, Prentice-Hall, Inc..
Manual of Steel Construction, (1989), 8th. Ed., American Institute of Steel Construction, New York
Mc Guire W., (1968), Steel structures, Prentice-Hall, INC...
Walsh G.R., (1975), Methods of optimization, John Wiley.