Title:
A Unified Approach to Shear Design
Author(s):
Robert J. Frosch, Qiang Yu, Gianluca Cusatis, and Zdeněk P. Bažant
Publication:
Concrete International
Volume:
39
Issue:
9
Appears on pages(s):
47-52
Keywords:
concrete, reinforcement, member, section
DOI:
10.14359/51701014
Date:
9/1/2017
Abstract:
Shear design expressions in ACI 318-14 have limitations related primarily to beams with low percentages of flexural reinforcement, beams with high-strength concrete, and member size. Also, different design approaches are required for nonprestressed and prestressed members. This article shows that it is possible to eliminate these limitations, unify design methods, and provide for improved safety of concrete structures.
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. ACI Committee 318, “Building Code Requirements for Reinforced Concrete (ACI 318-63),” American Concrete Institute, Farmington Hills, MI, 1963, 144 pp.
3. ACI Committee 318, “Commentary on Building Code Requirements for Reinforced Concrete (ACI 318-63),” SP-10, American Concrete Institute, Farmington Hills, MI, 1965, 91 pp.
4. Tureyen, A.K., and Frosch, R.J., “Concrete Shear Strength: Another Perspective,” ACI Structural Journal, V. 100, No. 5, Sept.-Oct. 2003, pp. 609-615.
5. Tureyen, A.K.; Wolf, T.S.; and Frosch, R.J., “Strength in Shear of Reinforced Concrete T-Beams without Transverse Reinforcement,” ACI Structural Journal, V. 103, No. 5, Sept.-Oct. 2006, pp. 656-663.
6. Wolf, T.S., and Frosch, R.J., “Shear Design of Prestressed Concrete: A Unified Approach,” Journal of Structural Engineering, ASCE, V. 133, No. 11, Nov. 2007, pp. 1512-1519.
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8. ACI Committee 440, “Guide for the Design and Construction of Structural Concrete Reinforced with Fiber-Reinforced Polymer (FRP) Bars (ACI 440.1R-15),” American Concrete Institute, Farmington Hills, MI, 2015, 83 pp.
9. Bažant, Z.P.; Yu, Q.; Gerstle, W.; Hanson, J.; and Ju, J.W., “Justification of ACI 446 Proposal for Updating ACI Code Provisions for Shear Design of Reinforced Concrete Beams,” ACI Structural Journal, V. 104, No. 5, Sept.-Oct. 2007, pp. 601-610.
10. Yu, Q.; Le, J.; Hubler, M.H.; Wendner, R.; Cusatis, G.; Bažant, Z.P., “Comparison of Main Models for Size Effect on Shear Strength of Reinforced and Prestressed Concrete Beams,” Structural Concrete, V. 17, No. 5, Dec. 2016, pp. 778-789.
11. Ospina, C.O., “Alternative Model for Concentric Punching Capacity,” Concrete International, V. 27, No. 9, Sept. 2005, pp. 53-57.