Flexural Behavior of Prestressed Split-Beam Composite Concrete Sections

Bryson, J O; Skoda, Leopold F; Watstein, D

doi:10.15554/pcij.06011965.77.91

Cited by 2 publications

(4 citation statements)

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“…(1) post-tensioned, unbonded; (2) The performances of the beams are compared in terms of load-deflection characteristics, ultimate strengths, and crack patterns. The moment index Asfsyd shows a direct correlation with both the loaddeflection relationship and ultimate strength.…”

Section: Test Results and Analysismentioning

confidence: 99%

“…The channel for the reinforcing tendons in each post-tensioned beam was formed by placing a length of thin-wall steel tubing, 1-in O.D., with 1/16-in wall thickness, in the form in the position specified for the tendon. The use of this tubing in prestressed beams in an earlier study [2] had no apparent effect on the performance of the beams. The tubing was center to center at the ends of the beam.…”

Section: Beamsmentioning

confidence: 85%

“…The work reported here is an extension of an earlier study [2] with split-beams of rectangular cross section.…”

mentioning

confidence: 87%

“…The location of the tendon in the split-beam was 8.7 in below the center of gravity of its composite Tee section and the prestress force was 27,000 lb. The essential difference here is that the location of the tendon and the prestress for the monolithic beam is determined from the properties of the full Tee section while, due to the nature of the construction of the split-beam [2], the location of the tendon and the prestress is determined by the prop- Figure 4 shows the idealized stress conditions for both types of beams for two stages of loading. The stress conditions (a) show that for the monolithic beam the stress block tapers from the maximum value at the bottom fiber to zero at the top fiber of the beam.…”

Section: Beamsmentioning

confidence: 99%

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Flexural behavior of prestressed concrete composite tee-beams

Bryson¹,

Carpenter²

1970

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Prestressed Tee-beams constructed by the split-beam method were tested to failure in flexure to study the behavior and ultimate strength of these beams and to compare their flexural characteristics with those of prestressed beams of conventional construction. The compressive portion of the cross section of the split-beam is cast after the web of the beam has been formed and prestressed. The variables in the study included the percentage of prestressing steel, strength of concrete in the compressive element of the composite split-beams, manner of prestressing and web reinforcement. Results showed that the composite split-beams behaved similarly to the monolithically constructed beams on the basis of flexural response and ultimate load. The strength of the concrete for the compressive element can be reduced within limits from that required for the prestressed element without sacrificing ultimate load capacity. The required percentage of reinforcing steel is less for the split-beam compared with conventional beams.

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Section: Test Results and Analysismentioning

confidence: 99%

Section: Beamsmentioning

confidence: 85%

“…The work reported here is an extension of an earlier study [2] with split-beams of rectangular cross section.…”

mentioning

confidence: 87%

Section: Beamsmentioning

confidence: 99%

See 2 more Smart Citations