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Shear Behavior of Post-tensioning PSC Beams with High Strength Shear Reinforcement
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 Title & Authors
Shear Behavior of Post-tensioning PSC Beams with High Strength Shear Reinforcement
Jun, Byung-Koo; Lee, Jea-Man; Lim, Hye-Sun; Lee, Jung-Yoon;
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The KCI-12 and ACI 318-14 design codes limit the maximum yield strength of shear reinforcement to prevent concrete compressive crushing before the yielding of shear reinforcement. The maximum yield strength of shear reinforcement is limited to 420 MPa in the ACI 318-14 design code, while limited to 500 MPa in the KCI-12 design code. A total of eight post-tensioning prestressed concrete beams with high strength shear reinforcement were tested to observe the shear behavior of PSC beams and the applicability of the high strength reinforcement was thus assessed. In the all PSC beam specimens that used stirrups greater than maximum yield strength of shear reinforcement required by the ACI 318-14 design code, the shear reinforcement reached their yield strains. The observed shear strength of tested eight PSC beams was greater than the calculated ones by the KCI-12 design codes. In addition, the diagonal crack width of all specimens at the service load was smaller than the crack width required by the ACI 224 committee. The experimental and analytical results indicate that the limitation on the yield strength of shear reinforcement in the ACI 318-14 design code is somewhat under-estimated and needs to be increased for high strength concrete. Also the application of high strength materials to PSC is available with respect to strength and serviceability.
shear reinforcement;high strength;prestressed concrete beams;diagonal crack width;shear design;
 Cited by
Ministry of Land, Transport and Maritime Affairs, "Concrete Design Code", Korea Concrete Institute, 2012, p.170.

ACI Committee 318, "Building Code Requirements for Structural Concrete(ACI 318-14) and Commentary(ACI 318R-14)", American Concrete Institute, Farmington Hills, MI, 2014, p.434.

Comete European de Normalisation(CEN), "Eurocode 2 : Design of Concrete Structures. Part 1-General Rules and Rules for Buildings", prEN 1992-1, 2002, p.211.

CSA Committee A23.3-04, Design of Concrete Structures for Buildings CAV3-A23.3-04, Canadian Standards Association, Canada, 2004, p.232.

Bazant, Z. P., and Cao, Z., "Size Effect of Shear Failure in Prestressed Concrete Beams", ACI Journal, Proceedings, Vol.83, No.2, 1986, pp.260-268.

Wolf, T. S., and Frosch, R. J., "Shear Design of Prestressed Concrete : A Unified Approach", Journal of Structural Engineering, ASCE, Vol.133, No.11, 2007, pp.1512-1519. crossref(new window)

Elzanaty, A. H., Nilson, A. H., and Slate, F. O., "Shear capacity of prestressed concrete girders using high-strength concrete", ACI Journal, Vol.83, No.3, 1986, pp.359-368.

Nakamura, E., "Shear Database for Prestressed Concrete Members", Master of Science in Engineering Thesis, The University of Texas at Austin, 2011, p.86.

Lee, J. Y., and Hwang, H. B., "Maximum Shear Reinforcement of Reinforced Concrete Beams", ACI Structural Journal, Vol.107, No.5, 2010, pp.580-588.

Lee, J. Y., and Choi, I. J., "Shear Behavior of Reinforced Concrete Beams with High-Strength Stirrups", ACI Structural Journal, Vol.108, No.5, 2011, pp.621-629.

Regan, P. E., and Baker, A. L. L., "Shear Failure of Reinforced Concrete Beams", ACI Journal, Vol.68, No.10, 1971, pp. 763-773.

Sozen, M. A., and Zwoyer, E. M., "Investigation of Prestressed Concrete for Highway Bridge, Part 1-Strength in Shear of Beams without Web Reinforcement", Engineering Experiment Station Bulletin, No. 452, University of Illinois, Urbana, 1959, p.69.

ACI Committee 224, "Control of Cracking in Concrete Structures (ACI 224R-01)", American Concrete Institute, Detroit, 2001, p.46.