Title:
Shear Strength of Prestressed and Nonprestressed Concrete Beams
Author(s):
Yi-An Li, Thomas T.C. Hsu, and Shyh-Jiann Hwang
Publication:
Concrete International
Volume:
39
Issue:
9
Appears on pages(s):
53-57
Keywords:
failure, web, flexural, design
DOI:
10.14359/51701015
Date:
9/1/2017
Abstract:
ACI 318-14 requirements for determining the shear strength of concrete beams are separated into two distinctly different methods—one for prestressed concrete (PC) and one for nonprestressed reinforced concrete (RC). To simplify the shear strength calculations, a shear prediction equation incorporating a factor known as the “arch action factor” is proposed. This factor provides a means to unify flexural shear failure and web shear failure, and it has been shown to be applicable to both PC and RC.
Related References:
1. ACI Committee 318, “Building Code Requirements for Structural Concrete (ACI 318-14) and Commentary (ACI 318R-14),” American Concrete Institute, Farmington Hills, MI, 2014, 519 pp.
2. Laskar, A.; Hsu, T.T.C.; and Mo, Y.L., “Shear Strengths of Prestressed Concrete Beams Part 1: Experiments and Shear Design Equations,” ACI Structural Journal, V. 107, No. 3, May-June 2010, pp. 330-339.
3. Hsu, T.T.C.; Laskar, A.; and Mo, Y.L., “Shear Strengths of Prestressed Concrete Beams Part 2: Comparisons with ACI and AASHTO Provisions,” ACI Structural Journal, V. 107, No. 3, May-June 2010, pp. 340-345.
4. Kuo, W.W.; Hsu, T.T.C.; and Hwang, S.J., “Shear Strength of Reinforced Concrete Beams,” ACI Structural Journal, V. 111, No. 4, July-Aug. 2014, pp. 809-818.
5. Tureyen, A.K., and Frosch, R.J., “Concrete Shear Strength: Another Perspective,” ACI Structural Journal, V. 100, No. 5, May-June 2003, pp. 609-615.
6. Joint ACI-ASCE Committee 446, “Fracture Mechanics of Concrete: Concepts, Models and Determination of Material Properties (ACI 446.1R-91) (Reapproved 1999),” American Concrete Institute, Farmington Hills, MI, 1991, 146 pp.