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http://dx.doi.org/10.4334/JKCI.2011.23.1.013

Indeterminate Strut-Tie Model and Load Distribution Ratio of Continuous RC Deep Beams (II) Validity Evaluation  

Chae, Hyun-Soo (School of Architecture & Civil Engineering, Kyungpook National University)
Kim, Byung-Hun (Infrastructure Dept., HyunDai Engineering Co. Ltd.)
Yun, Young-Mook (School of Architecture & Civil Engineering, Kyungpook National University)
Publication Information
Journal of the Korea Concrete Institute / v.23, no.1, 2011 , pp. 13-22 More about this Journal
Abstract
In this study, ultimate strengths of 51 continuous reinforced concrete deep beams were evaluated by the ACI 318M-08's strut-tie model approach implemented with the presented indeterminate strut-tie model and load distribution ratio of the companion paper. The ultimate strengths of the continuous deep beams were also estimated by the shear equations derived based on experimental results, conventional design codes based on experimental and theoretical shear strength models, and current strut-tie model design codes. The validity of the presented strut-tie model and load distribution ratio was examined through the comparison of the strength analysis results classified according to the primary design variables of shear span-to-effective depth ratio, flexural reinforcement ratio, and concrete compressive strength. The present study results of ultimate strengths obtained using the indeterminate strut-tie model and load distribution ratio of the continuous deep beams agree fairly well with those obtained using other approaches. In addition, the present approach reflected the effect of the primary design variables on the ultimate strengths of the continuous deep beams consistently and accurately. Therefore, the present study will help structural designers to conduct rational and practical strut-tie model designs of continuous deep beams.
Keywords
continuous reinforced concrete deep beam; indeterminate strut-tie model; reaction distribution ratio; load distribution ratio; ultimate strength;
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1 Yang, K. H., Chung, H. S., and Ashour, A. F., “Influence of Shear Reinforcement on Reinforced Concrete Continuous Deep Beam,” ACI Structural Journal, Vol. 104, No. 4, 2007, pp. 420-429.
2 Yang, K. H., Chung, H. S., and Ashour, A. F., “Influence of Section Depth on the Structural Behaviour of Reinforced Continuous Deep Beams,” Magazine of Concrete Research, Vol. 59, No. 8, 2007, pp. 575-586.   DOI   ScienceOn
3 Vecchio, F. J. and Collins, M. P., “The Modified Compression Field Theory for Reinforced Concrete Elements Subjected to Shear,” ACI Journal, Vol. 83, No. 2, 1986, pp. 219-231.
4 Rogowsky, D. M., MacGregor, J. G., and Ong, S. Y., “Tests of Reinforced Concrete Deep Beams,” ACI Structural Journal, Vol. 83, No. 4, 1986, pp. 614-623.
5 Ashour, A. F., “Tests of Reinforced Concrete Continuous Deep Beams,” ACI Structural Journal, Vol. 94, No. 1, 1997, pp. 3-12.
6 Subedi, N. K., “Reinforced Concrete Two-span Continuous Deep Beams,” Proc. Instn Civ. Engrs. Structs., Vol. 128, 1998, pp. 12-25.   DOI   ScienceOn
7 신용호, “춤이 깊은 연속보의 전단내력에 관한 실험적 연구,” 석사학위논문, 부경대학교 건축공학과, 2001, 80 pp.
8 Eurocode 2, Design of Concrete Strutcures, Part I: General Rules and Rules for Buildings(DD ENV 1992-1-1), Commission of the European Communities, UK, 1992, 176 pp.
9 American Concrete Institute, Building Code Requirements for Structural Concrete (ACI 318M-08) and Commentary, Farmington Hills, Michigan, USA, 2008, 473 pp.
10 American Concrete Institute, Building Code Requirements for Structural Concrete (ACI 318-99) and Commentary (ACI 318R-99), Farmington Hills, Michigan, USA, 1999, 391 pp.
11 Zsutty, T. C., “Shear Strenght Prediction for Separate Categories of Simple Beam Tests,” ACI Journal, Vol. 68, No. 2, 1971, pp. 138-143.
12 Comite Euro-International du Beton, CEB-FIP Model Code 1990, Thomas Telford Services Ltd., 1993, 437 pp.
13 American Association of State Highway and Transportation Officials, AASHTO LRFD Bridge Design Specifications, 4th Edition, Washington, DC, USA, 2007, pp. 5-1-5-264.
14 The International Federation for Structural Concrete (fib), Structural Concrete; Textbook on Behavior, Design and Performance Updated Knowledge of the CEB/FIP Model Code 1999 Volume 3, The International Federation for Structural Concrete (fib), Lausanne, Switzerland, 1999, 292 pp.