Ultimate Load Capacity of Prestressed Concrete Columns

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Title: Ultimate Load Capacity of Prestressed Concrete Columns

Author(s): Paul Zia and F. L. Moreadith

Publication: Journal Proceedings

Volume: 63

Issue: 7

Appears on pages(s): 767-788

Keywords: column, design, prestressed concrete, prestressed column, rectangular beam, ultimate strength.

Date: 7/1/1966

Abstract:
Presents the results of an analytical study on the load carrying capactiy of rectangular prestressed concrete columns with hinged ends. The effects of concrete strength, steel percentage, slenderness ratio and eccentricity on the strength of columns are investigated. Comparison is made between the strength of prestressed concrete columns and that of reinforced concrete columns. The resluts indicate that the advantage of prestressing lies with the slender columns subject to loads with large eccentricity. On the basis of the results obtained, simple design procedures are proposed. The procedures are similar to the current design method for reinforced concrete columns in that the strength of short columns is modified by capacity reduction factors to account for the effects of slenderness ratio and eccentricity.