Prestressed Concrete Design by Linear Programming

by David Morris, (M.ASCE), Assoc. Prof. of Civ. Engrg.; Univ. of Virginia, Charlottesville, Va.,


Serial Information: Journal of the Structural Division, 1978, Vol. 104, Issue 3, Pg. 439-442


Document Type: Journal Paper

Discussion: Aswad Alex (See full record)
Discussion: Maquoi Rene (See full record)
Closure: (See full record)

Abstract: The adequacy of a concrete trial section and the determination of the minimum necessary prestressing steel area for a prestressed concrete requires the satisfaction of multiple design criteria. These equations can be linearized through the use of a reciprocal prestressing force factor in the working stress equation and piecewise linearization of the ultimate strength and maximum reinforcement conditions. These data can be postulated in matrix form for input to a standard linear programming optimization computer code, and the optimal prestressing area can be determined. An example shows the application to a routine design.

Subject Headings: Prestressing | Linear functions | Computer programming | Prestressed concrete | Standards and codes | Steel | Ultimate strength

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