Flexural Behavior of Prestressed Concrete Composite Tee-beamsU.S. National Bureau of Standards, 1970 - 12 pages 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. Results showed that composite split-beams behaved similarly to the monolithically constructed beams on the basis of flexural response and ultimate load. |
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Page 2
... bar , threaded on both ends , was used as the prestressing tendon in the post - tensioned beams . In each case , the tendon was straight and located at a constant depth in the cross section throughout the length of the beam . Figure 2 ...
... bar , threaded on both ends , was used as the prestressing tendon in the post - tensioned beams . In each case , the tendon was straight and located at a constant depth in the cross section throughout the length of the beam . Figure 2 ...
Page 3
... was placed between standard chuck type strand grips and the anchoring column at the end opposite to the jacking end to reflect the prestressing force in the strands . Stirrups were fabricated from mild steel No. 3 reinforcing bars. 3.
... was placed between standard chuck type strand grips and the anchoring column at the end opposite to the jacking end to reflect the prestressing force in the strands . Stirrups were fabricated from mild steel No. 3 reinforcing bars. 3.
Page 4
... bars having a yield strength of 50,000 psi . They were U - shaped in the stem of the beam and placed throughout the ... bars were used . Tensile tests of these bars indicated a stress - strain relationship that is essentially linear up ...
... bars having a yield strength of 50,000 psi . They were U - shaped in the stem of the beam and placed throughout the ... bars were used . Tensile tests of these bars indicated a stress - strain relationship that is essentially linear up ...
Page 5
... / f'c ; tension reinforcement index 1.0 2.0 3.0 MIDSPAN DEFLECTION , INCH FIGURE 6. Load - deflection relationship for post - tensioned beams with unbounded solid bar tendons . Concrete TABLE 1. Properties of beams and test results Beam 5.
... / f'c ; tension reinforcement index 1.0 2.0 3.0 MIDSPAN DEFLECTION , INCH FIGURE 6. Load - deflection relationship for post - tensioned beams with unbounded solid bar tendons . Concrete TABLE 1. Properties of beams and test results Beam 5.
Page 6
... bars were used , the area reported is the effective area in the threaded sections near the ends of the beam . = 24 , Computed depth of stress block at ultimate load using measured force in tendon , ( T / 0.85 bf ' ) . force to act at ...
... bars were used , the area reported is the effective area in the threaded sections near the ends of the beam . = 24 , Computed depth of stress block at ultimate load using measured force in tendon , ( T / 0.85 bf ' ) . force to act at ...
Common terms and phrases
25 cents 680 Tension APPLIED LOAD Applied Technology automatic data processing beams of conventional beams with bonded Behavior of Prestressed bottom fiber Building Science Series Bureau of Standards Cement and Concrete composite construction composite split-beams Composite stirrups 12"c/c compression zone compressive element compressive strength compressive stress Concrete Composite Tee-Beams Concrete Properties concrete strengths construction joint conventional composite beam crack patterns cross section curves DEPARTMENT OF COMMERCE dynamometer flange Flexural Behavior in-kips index Asfsyd Institute for Applied Interrelations Between Cement load response Load-deflection relationship measured ultimate moments monolithic beam National Bureau neutral axis overall performance Pfsu Portland Cement post-tensioned beams post-tensioned unbonded prestress parameters prestressed beams Prestressed Concrete Composite prestressing force prestressing steel prestressing tendon pretensioned beams ratio reinforced concrete strength of concrete stress block stress conditions stress-strain Stress-strain curves TENDON LOCATION tensile element Tensile tests tensioned beams U.S. DEPARTMENT U.S. Government Printing ultimate load ultimate strength yield strength