Title:
Study of Dowel Action in Reinforced Concrete Beam by Factorial Design of Experiment
Author(s):
Sushree Sangeeta Panda and Appa Rao Gangolu
Publication:
Structural Journal
Volume:
114
Issue:
6
Appears on pages(s):
1495-1505
Keywords:
ANOVA; dowel force; factorial design; longitudinal reinforcement; regression analysis
DOI:
10.14359/51700831
Date:
11/1/2017
Abstract:
The accurate prediction of the shear behavior of reinforced concrete (RC) beams faces the challenge of complex shear-transfer mechanism. Shear resistance by dowel action of reinforcing bars has not been explicitly resolved due to limited replicates and variation in experimental prediction. Therefore, the present experiment proposes 2k factorial design, augmented with central composite design predicting the significance of percentage flexural reinforcement, reinforcement diameter, compressive strength of concrete, and bottom clear cover on dowel action in RC beams. The Fisher test is used, establishing the significance of main factors and interaction effects. The nature of the variation of ultimate dowel force in terms of influencing factors has been accounted for, developing an empirical polynomial equation. It is shown that cover has a direct impact and other factors, along with cover, play interaction effect on dowel force.
Related References:
1. Watstein, D., and Mathey, R. G., “Strains in Beams Having Diagonal Cracks,” ACI Journal Proceedings, V. 30, No. 6, June 1958, pp. 717-728.
2. Acharya, D. N., and Kemp, K. O., “Significance of Dowel Forces on the Shear Failure of Rectangular Reinforced Concrete Beams without Web Reinforcement,” ACI Journal Proceedings, V. 62, No. 10, Oct. 1965, pp. 1265-1279.
3. Guralnick, S. A., “Strength of Reinforced Concrete Beams,” Transactions of the American Society of Civil Engineers, V. 125, 1960, pp. 603-643.
4. Bresler, B., and Pister, K. S., “Strength of Concrete under Combined Stresses,” ACI Journal Proceedings, V. 55, No. 3, Mar. 1958, pp. 321-345.
5. Walther, R., “The Shear Strength of Prestressed Concrete Beams,” Proceedings of the Third Congress, Federation Internationale de la Precontrainte, Paper 9, Session I, London, UK, 1958, pp. 80-100.
6. Jones, L. L., “A Theoretical Solution for the Ultimate Strength for Rectangular Reinforced Concrete Beams without Stirrups,” Bulletin d’Information No. 42, Comite Europeen du Beton, Paris, France, 1964, pp. 49-73.
7. Ferguson, P. M., “Some Implications of Recent Diagonal Tension Tests,” ACI Journal Proceedings, V. 53, No. 2, Feb. 1956, pp. 157-172.
8. Krefeld, W. J., and Thurston, C. W., “Contribution of Longitudinal Steel to Shear Resistance of Reinforced Concrete Beams,” ACI Journal Proceedings, V. 63, No. 3, Mar. 1966, pp. 325-344.
9. Taylor, H. P. J., “Investigation of the Dowel Shear Forces Carried by the Tensile Steel in Reinforced Concrete Beams,” Cement and Concrete Association, London, UK, 1969, pp. 1-24.
10. Baumann, T., and Rüsch, H., “Versuche zum Studium der Verdübelungswirkung der Biegezugbewehrung eines Stahlbetonbalkens,” Deutscher Ausschuss fur Stahlbeton, Heft 210, Berlin, Germany, 1970, pp. 45-83.
11. Gergely, P., “Splitting Cracks Along the Main Reinforcement in Concrete Members,” Department of Structural Engineering, Report, Cornell University, Ithaca, NY, Apr. 1969.
12. Houde, J., “Study of Force-Displacement Relationships for the Finite Element Analysis of Reinforced Concrete,” Structural Concrete Series No. 73-2, McGill University, Montreal, QC, Canada, 1973.
13. Hofbeck, J. A.; Ibrahim, I. A.; and Mattock, A. H., “Shear Transfer in Reinforced Concrete,” ACI Journal Proceedings, V. 66, No. 2, Feb. 1969, pp. 119-128.
14. Dulacska, H., “Dowel Action of Reinforcement Crossing Cracks in Concrete,” ACI Journal Proceedings, V. 69, No. 12, Dec. 1972, pp. 754-757.
15. Rasmussen, B. H., “Strength of Transversely Loaded Bolts and Dowels Cast into Concrete,” Laboratoriet for Bygningastatik, Den. Tecn. Hoskole, Meddelelse, V. 34, No. 2, 1962.
16. Bennett, E. W., and Banerjee, S., “Strength of Beam Column Connections with Dowel Reinforcement,” The Structural Engineer, V. 5I+J, No. 1+, 1976, pp. 133-139.
17. Jimenez, R.; White, R. N.; and Gergely, P., “Bond and Dowel Capacities of Reinforced Concrete,” ACI Journal Proceedings, V. 76, No. 1, Jan. 1979, pp. 73-92.
18. Soroushian, P.; Obaseki, K.; Rojas, M. C.; and Sim, J., “Analysis of Dowel Bars Acting against Concrete Core,” ACI Journal Proceedings, V. 83, No. 4, July-Aug. 1986, pp. 642-649.
19. He, X. G., and Kwan, A. K. H., “Modeling Dowel Action of Reinforcement Bars for Finite Element Analysis of Concrete Structures,” Computers & Structures, V. 79, No. 6, 2001, pp. 595-604. doi: 10.1016/S0045-7949(00)00158-9
20. El-Ariss, B., “Behaviour of Beams with Dowel Action,” Science Direct, Engineering Structures, V. 29, No. 6, 2007, pp. 899-903. doi: 10.1016/j.engstruct.2006.07.008
21. Houde, J. and Mirza, M. S., “A Finite Element Analysis of Shear Strength of Reinforced Concrete Beams,” Shear in Reinforced Concrete, SP-42, V. 1, American Concrete Institute, Farmington Hills, MI, 1974, pp. 103-128.
22. Sonnenberg, A. M. C., and Al-Mahaidi, R., “Investigation of Dowel Shear in RC Beams Using Photogrammetry,” Magazine of Concrete Research, V. 59, No. 9, 2007, pp. 621-626. doi: 10.1680/macr.2007.59.9.621
23. Sarkar, S.; Adwan, O.; and Bose, B., “Shear Stress Contributions and Failure Mechanisms of High Strength Reinforced Concrete Beams,” Materials and Structures, V. 32, No. 2, 1999, pp. 112-116. doi: 10.1007/BF02479437
24. Walraven, J. C., “Mechanics of Shear Transfer in Cracks in Concrete—A Survey of Literature,” Stevin Laboratory, Delft University of Technology, Delft, the Netherlands, 1978.
25. Vintzeleou, E. N., and Tassios, T. P., “Mathematical Models for Dowel Action under Monotonic and Cyclic Conditions,” Magazine of Concrete Research, V. 38, No. 134, 1986, pp. 13-22. doi: 10.1680/macr.1986.38.134.13
26. Paulay, T.; Park, R.; and Phillips, M. H., “Horizontal Construction Joints in Cast-in-Place Reinforced Concrete,” Shear in Reinforced Concrete, SP-42, V. 2, American Concrete Institute, Farmington Hills, MI, 1971, pp. 599-6l6.
27. Jelic, I.; Pavlovic, M. N.; and Kotsovos, M. D., “A Study of Dowel Action in Reinforced Concrete Beams,” Magazine of Concrete Research, V. 51, No. 2, 1999, pp. 131-141. doi: 10.1680/macr.1999.51.2.131
28. Jimenez, R.; White, R. N.; and Gergely, P., “Shear Transfer across Cracks in Reinforced Concrete,” Department of Structural Engineering, Cornell University, Ithaca, NY, 1978.
29. Singh, B., and Chintakindi, C., “An Appraisal of Dowel Action in Reinforced Concrete Beams,” Proceedings of the Institution of Civil Engineers, Structures and Buildings, V. 166, Issue SB 5, 2012, pp. 257-267.
30. Montgomery, D. C., Design and Analysis of Experiment, fifth edition, John Wiley & Sons, Inc., New York, 2001.
31. Taylor, H. P. J., “Further Tests to Determine Shear Stresses in Reinforced Concrete Beams,” Technical Report TR 42.438, Cement and Concrete Associations, London, UK, 1970.