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dc.contributor.advisor Krahl, Nat W.
dc.creatorReagan, Ronald Steven
dc.date.accessioned 2016-04-21T12:02:02Z
dc.date.available 2016-04-21T12:02:02Z
dc.date.issued 1966
dc.identifier.citation Reagan, Ronald Steven. "An analytical study of the behavior of prestressed composite beams." (1966) Master’s Thesis, Rice University. https://hdl.handle.net/1911/89283.
dc.identifier.urihttps://hdl.handle.net/1911/89283
dc.description.abstract This thesis presents an analytical study of the behavior of prestressed composite beams. The particular configuration of prestressed composite beam considered is a simply-supported steel beam, prestressed by a high-strength steel tendon with a constant eccentricity, and attached to a concrete slab by shear connectors designed to insure complete interaction. A numerical method for analyzing the statically indeterminate beam was developed and used as a basis for a computer program which found the strains and deflections at a discrete number of equally spaced points along the length of the beam for increasing values of load up to the failure load. These strains and deflections satisfied the stress-strain relations for the materials, the static equilibrium of the beam, and the compatibility of deformation of the tendon. Hognestad's stress-strain relation was assumed for the concrete slab, an elasto-plastic stress-strain relation was assumed for the steel beam, and an actual stress-strain curve was used for the tendon. The numerical procedure combines the method of tangents for solving simultaneous nonlinear equations with a method of successive approximations. A simplification of this program was devised to analyze conventional composite beams. Detailed studies were made of some prestressed composite beams suitable for highway bridges and some suitable for buildings. The effect on behavior of variation of prestress force and tendon size were investigated and compared with the effect of variation of cover plate size for conventional composite beams. These studies show that prestressing a composite beam is an effective means of increasing the load capacity of the beam at all of the following stages of behavior: load causing allowable steel stress, load causing yielding of steel beam, and ultimate load. Prestressing does not significantly increase the load causing the allowable concrete stress nor does it significantly reduce live load deflection. The behavior of a prestressed composite beam is shown to be not very sensitive to variation of slab thickness. The validity of the method of analysis was verified by the comparison of analytical and experimental results for several prestressed and conventional composite beams which were tested in the laboratory by other investigators.
dc.format.extent 104 pp
dc.language.iso eng
dc.title An analytical study of the behavior of prestressed composite beams
dc.identifier.digital RICE0321
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Civil and Environmental Engineering
thesis.degree.discipline Engineering
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Science
dc.format.digitalOrigin reformatted digital
dc.identifier.callno Thesis C.E. 1966 REAGAN


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