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On the Ductility of High-Strength Concrete Beams

  • 발행 : 2008.12.30

초록

Ductility is important in the design of reinforced concrete structures. In seismic design of reinforced concrete members, it is necessary to allow for relatively large ductility so that the seismic energy is absorbed to avoid shear failure or significant degradation of strength even after yielding of reinforcing steels in the concrete member occurs. Therefore, prediction of the ductility should be as accurate as possible. The principal aim of this paper is to present the basic data for the ductility evaluation of reinforced high-strength concrete beams. Accordingly, 23 flexural tests were conducted on full-scale structural concrete beam specimens having concrete compressive strength of 40, 60, and 70MPa. The test results were then reviewed in terms of flexural capacity and ductility. The effect of concrete compressive strength, web reinforcement ratio, tension steel ratio, and shear span to beam depth ratio on ductility were investigated experimentally.

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참고문헌

  1. Leslie, K. E., Rajagopalan, K. S., and Eveard, N. J., "Flexural Behavior of High-Strength Concrete Beams," ACI Journal, Vol. 73, No. 8, 1976, pp. 517-521
  2. Ibrahim, H. H. H. and MacGregor, J. G., "Modification of the ACI Rectangular Stress Block for High-Strength Concrete," ACI Structural Journal, Vol. 94, No. 1, 1997, pp. 40-48
  3. Jang, I. Y. and Park, H. G., "Development of Stress-Strain Model and Stress Distribution Model for Ultra-Strength Concrete," Journal of Korea Concrete Institute, Vol. 9, No. 5, October 1997
  4. Pastor, J. A., Nilson, A. H., and Slate, F. O., "Behavior of High-Strength Concrete Beams," Research Report 84-3, Department of Structural Engineering, Cornell University, Ithaca, New York, February, 1984, 311 pp

피인용 문헌

  1. Evaluation on Moment-Curvature Relations and Curvature Ductility Factor of Reinforced Concrete Beams with High Strength Materials vol.25, pp.3, 2013, https://doi.org/10.4334/JKCI.2013.25.3.283
  2. Predictions of Curvature Ductility Factor of Reinforced Concrete Beam Sections Used High Strength Concrete and Steel vol.33, pp.2, 2013, https://doi.org/10.12652/Ksce.2013.33.2.483
  3. The effect of traditional reinforcement - prestressed reinforcement ratio on the behaviour of concrete beams vol.45, pp.4, 2014, https://doi.org/10.1002/mawe.201400223
  4. Structural performance of reinforced concrete exterior beam–column joint subjected to combined shear and torsion vol.19, pp.2, 2016, https://doi.org/10.1177/1369433215624590
  5. Improving the Failure Mode of Over-Reinforced Concrete Beams Using Strain-Hardening Cementitious Composites vol.30, pp.5, 2016, https://doi.org/10.1061/(ASCE)CF.1943-5509.0000857
  6. Curvature ductility of high strength concrete beams according to Eurocode 2 vol.58, pp.1, 2016, https://doi.org/10.12989/sem.2016.58.1.001
  7. Experimental Research on the Ductility of High Performance Concrete Beams vol.166-169, pp.1662-7482, 2012, https://doi.org/10.4028/www.scientific.net/AMM.166-169.1316
  8. Reinforced Concrete Finite Element Analysis Incorporating Material Nonlinearity and Failure Criteria Aspects vol.284-287, pp.1662-7482, 2013, https://doi.org/10.4028/www.scientific.net/AMM.284-287.1230
  9. Flexural behavior of ultra-high-performance fiber reinforced concrete beams with low and high reinforcement ratios pp.14644177, 2018, https://doi.org/10.1002/suco.201700089