DOI QR코드

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Behavior of reinforced concrete corbels

  • Lu, Wen-Yao (Department of Interior Design, China University of Technology) ;
  • Lin, Ing-Jaung (Department of Construction Engineering, National Taiwan University of Science and Technology)
  • 투고 : 2009.02.23
  • 심사 : 2009.09.03
  • 발행 : 2009.10.20

초록

Test results of thirteen reinforced concrete corbels with shear span-to-depth ratio greater than unity are reported. The main variables studied were compressive strength of concrete, shear span-to-depth ratio and parameter of vertical stirrups. The test results indicate that the shear strengths of corbels increase with an increase in compressive strength of concrete and parameter of vertical stirrups. The shear strengths of corbels also increase with a decrease in shear span-to-depth ratio. The smaller the shear span-to-depth ratio of corbel, the larger the stiffness and the shear strength of corbel are. The higher the concrete strength of corbel, the higher the stiffness and the shear strength of corbel are. The larger the parameter of vertical stirrups, the larger the stiffness and the shear strength of corbel are. The softened strut-and-tie model for determining the shear strengths of reinforced concrete corbels is modified appropriately in this paper. The shear strengths predicted by the proposed model and the approach of ACI Code are compared with available test results. The comparison shows that the proposed model can predict more accurately the shear strengths of reinforced concrete corbels than the approach of ACI Code.

키워드

참고문헌

  1. Alfred Strauss, Andrea Mordini and Konrad Bergmeister (2006), 'Nonlinear finite element analysis of reinforced concrete corbels at both deterministic and probabilistic levels', Comput. Concr., 3(2), 123-144 https://doi.org/10.12989/cac.2006.3.2_3.123
  2. American Concrete Institute (2008), 'Building code requirements for structural concrete (ACI 318-08) and Commentary (ACI 318R-08)', Farmington Hills, MI
  3. Breen, J.E. (1991), 'Why structural concrete? p.15-26 in: IABSE Colloquium Structural Concrete', Stuttgart, IABSE Rep
  4. Fattuhi, N.I. (1994), 'Reinforced corbels made with plain and fibrous concrete', ACI Struct. J., 91(5), 530-536
  5. Fattuhi, N.I. and Hughes, B.P. (1989), 'Ductility of reinforced concrete corbels containing either steel fibers or stirrups', ACI Struct. J., 86(6), 644-651
  6. Foster, S.J., Powell, R.E. and Selim, H.S. (1996), 'Performance of high-strength concrete corbels', ACI Struct. J., 93(5), 555-563
  7. Her, G.J. (1990), 'A study of reinforced high-strength concrete corbels', Master's Thesis, Department of Construction Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan (in Chinese)
  8. Hwang, S.J. and Lee, H.J. (2002), 'Strength prediction for discontinuity regions failing in diagonal compressions by softened strut-and-tie model', J. Struct. Eng., ASCE, 128(12), 1519-1526 https://doi.org/10.1061/(ASCE)0733-9445(2002)128:12(1519)
  9. Hwang, S.J., Lu, W.Y. and Lee, H.J. (2000), 'Shear strength prediction for reinforced concrete corbels', ACI Struct. J., 97(4), 543-552
  10. Kriz, L.B. and Raths, C.H. (1965), 'Connections in precast concrete structures - strength of corbels', PCI J., 10(1), 16-61 https://doi.org/10.15554/pcij.02011965.16.61
  11. Mattock, A.H., Chen, K.C. and Soongswang, K. (1976), 'The behavior of reinforced concrete corbels', PCI J., 21(2), 52-77 https://doi.org/10.15554/pcij.03011976.52.77
  12. Morsch, E. (1909), Concrete-steel Construction. New York: McGraw-Hill
  13. Ritter, W. (1899), Die bauweise hennebique, Schweizerische Bauzeitung, 33(7), 59-61
  14. Russo, G., Venir, R., Pauletta M. and Somma, G. (2005), 'Reinforced concrete corbels-shear strength model and design formula', ACI Structu. J., 102(3), 429-437
  15. Schlaich, J., Schafer, K. Konstruieren im Stahlbetonbau (Detailing of reinforced concrete). Betonkalender 90, 2001. Teil II, 311-492. Ernst & Sohn Verlag, Berlin
  16. Yong, Y.K. and Balaguru, P. (1994), 'Behavior of reinforced high-strength--concrete corbels', J. Struct. Eng., ASCE, 120(4), 1182-1201 https://doi.org/10.1061/(ASCE)0733-9445(1994)120:4(1182)

피인용 문헌

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  4. Strength assessment of RC deep beams and corbels vol.77, pp.2, 2021, https://doi.org/10.12989/sem.2021.77.2.273
  5. Shear Friction and Strut-and-Tie Modeling Verification for Pier Caps vol.26, pp.9, 2009, https://doi.org/10.1061/(asce)be.1943-5592.0001758