Partially Prestressed Composite Beams under Sustained and Cyclic Loads
Publication: Journal of Structural Engineering
Volume 114, Issue 2
Abstract
A general time‐step analysis procedure for prestressed and partially prestressed concrete composite beams is presented. The analytical model considers the effects of creep (time and cyclic dependent), shrinkage of concrete, and relaxation of prestressing steel. The model developed satisfies equilibrium of forces and compatibility of strains with time and leads to the prediction of stresses and strains in the constituent materials at any time t and number of cycles For the initial time or the first cycle, the model is shown to reduce to existing models applicable to the analysis of partially prestressed beams under short‐term static loading. Solutions for uncracked composite sections as well as cracked and uncracked noncomposite sections are derived as special cases. A computerized parametric evaluation is briefly described and numerical examples are developed to illustrate the application of the method.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 114 • Issue 2 • February 1988
Pages: 269 - 291
Copyright
Copyright © 1988 ASCE.
History
Published online: Feb 1, 1988
Published in print: Feb 1988
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