Browse > Article
http://dx.doi.org/10.4334/JKCI.2004.16.6.795

Effects of Shear Span-to-depth Ratio and Tensile Longitudinal Reinforcement Ratio on Minimum Shear Reinforcement Ratio of RC Beams  

Lee Jung-Yoon (Dept. of Architectural Engineering Sungkyunkwan University)
Kim Wook-Yeon (Sangwon Engineering)
Kim Sang-Woo (Dept. of Architectural Engineering Sungkyunkwan University)
Lee Bum-Sik (Korea National Housing Corp.)
Publication Information
Journal of the Korea Concrete Institute / v.16, no.6, 2004 , pp. 795-803 More about this Journal
Abstract
To prevent the shear failure that occurs abruptly with no sufficient warning, the minimum amount of shear reinforcement should be provided to reinforced concrete(RC) beams. The minimum amount of shear reinforcement of RC beams is influenced by not only compressive strength of concrete but also shear span-to-depth ratio and ratio of tensile longitudinal reinforcement. In this paper, 14 RC beams were tested in order to observe the influences of shear span-to-depth ratio, ratio of tensile longitudinal reinforcement, and compressive strength of concrete. The test results indicated that the rate of shear strength to the diagonal cracking strength of RC beams with the same amount of shear reinforcement increased as the ratio of tensile longitudinal reinforcement increased, while it decreased as the shear span-to-depth ratio increased. The observed test results were compared with the calculated results by the current ACI 318-02 Building Code and the proposed equation.
Keywords
minimum shear reinforcement ratio; reinforced concrete beams; tensile longitudinal reinforcement ratio; shear span-to-depth ratio;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Yoon, Y. S., Cook, W. D., and Mitchell, D., 'Minimum Shear Reinforcement in Nominal, Medium, and High-Strength Concrete Beams,' ACI Structural Journal, Vol.93, No.5, 1996, pp.576-584
2 Ozcebe, G., Ersoy, U., and Tankut, T., 'Evaluation of Minimum Shear Reinforcements for High Strength Concrete,' ACI Structural Journal, Vol.96, No.3, 1999, pp.361 -368
3 Johnson, M. K. and Ramirez, J. A, 'Minimum Shear Reinforcement in Beams with High Strength Concrete,' ACI Structural Journal, Vol.86, No.4, 1989, pp.376-382
4 Architectural Institute of Japan, 'Standard for Structural Calculation cf Reiniforced Concrete Structures,' Architectural Institute of Japan, Japan, 1991, 654pp
5 CEB-FIP, 'CEB-FIP Model Code 1990,' Comite Euro-International du Beton, 1991, 437pp
6 Zsutty, T. C., 'Shear Strength Prediction for Separate Categoris of Simple Beam Tests,' ACI Structural Journal, Vol.63, No.2, 1971, pp.138-143
7 Belarbi, A and Hsu, T.T.C., 'Constitutive Laws of Concrete in Tension and Reinforcing Bars Stiffened by Concrete,' ACI Structural Journal, Vo1.91, No.4, 1994, pp.465-474
8 CSA Committee A23.3, 'Design of Concrete Structures for Buildings,' CAV3-A23.3-M94, Canadian Standards Association, Canada, 1994, 199pp
9 Roller, J. J. and Russell, H. G., 'Shear Strength of High-Strength Concrete Beams with Web Reinforcement,' ACI Structural Journal, Vol.87, No.2, 1990, pp.191 -198
10 ACI Committee 318, 'Building Code Requirements for Reinforced Concrete and Commentary (ACI 318-89 /ACI318R-89),' American Concrete Institute, Detroit, 1989
11 ACI Committee 318, 'Building Code Requirements for Reinforced Concrete and Commentary (ACI 318-83 /ACI 318R-83),' American Concrete Institute, Detroit, 1983
12 이정윤, 윤성현, '철근콘크리트 부재의 최소전단철근비의 평가', 콘크리트학회논문집, 16권 1호 2004, pp.43-53
13 Hsu, T.T.C., 'Unified Theory of Reiniforced Concrete,' CRC Press, 1993, 313pp
14 한국콘크리트학회, '콘크리트구조설계기준', 한국콘크리트학회, 1999
15 ACI Committee 318, 'Building Code Requirements for Reiniforced Concrete and Commentary (ACI 318-02/ACI 318R-02),' American Concrete Institute, Detroit, 2002