Structural Engineering and Mechanics

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Experimental investigation on the shear capacity of RC dapped end beams and design recommendations

  • Wang, Quanfeng (College of Civil Engineering, Huaqiao University) ;
  • Guo, Zixiong (College of Civil Engineering, Huaqiao University) ;
  • Hoogenboom, Pierre C.J. (Department of Civil Engineering, Delft University of Technology)
  • Received : 2004.01.19
  • Accepted : 2005.06.24
  • Published : 2005.09.30
⟨ Previous Next ⟩

Abstract

In this paper, the shear resistance behaviour of reinforced concrete (RC) dapped end beams is investigated by 24 tests until failure load. The main parameters considered are the dapped end height, the type and effective range to provided the stirrups and the bent form of the longitudinal reinforcement. The failure behaviour of dapped end beams is presented and some conclusions are given. Inclined stirrups and longitudinal bent reinforcement have more influence on the shear capacity than vertical stirrups. Additionally, the shear mechanism of dapped end beams is analysed. Relatively simple semi-empirical equations for shear strength have been derived based on the results of 22 dapped end beams. The predicted results are in close agreement with the experimental ones. Finally, some design suggestions for the ultimate shear strength of dapped end beams are presented.

Keywords

References

  1. American Concrete Institute (ACI) (1999), 'Building code requirements for structural concrete and commentary', ACI 318-99, Detroit
  2. Blaauwenclraad, J. and Hoogenboom, P.C.J. (2000), 'Design tool for structural concrete D-regions', Proc. ofthe Int. Symp. on Modern Concrete Composites & Infrastructures (MCCI'2000), Northern Jiaotong University , Beijing, China, 1, 3-10
  3. European Committee for Standardization (CEN) (1992), 'Design of concrete structures, Part 1: General rules and rules for buildings', Eurocode 2, Brussels
  4. Leonhardt, F. (1984), Grunlagen zur Bemessung im Stahlbetonbau (Teil 1, Dritte Auflage), Springer-Verlag, UK
  5. Mottaock, A.H. and Chan, T.C. (1979), 'Design and behavior of dapped end beams', Prestressed Concrete Institute Journal, 24(6), 28-45
  6. Mottaock, A.H. (1986), 'Behavior and design of dapped end members', Proceedings, Seminar of Precast Concrete Construction in Seismic Zones, Tokyo, 81-100
  7. Schlaich, J., Schafer, K. and Jnnewein, M. (1987), 'Toward a consistent design of structural concrete', Prestressed Concrete Institute Journal, 32(3), 74-150
  8. Thomas, T.C. (1998), 'Unified approach to shear analysis and design', J. Cement and Concrete Composites, 20, 419-435 https://doi.org/10.1016/S0958-9465(98)00028-6
  9. Wang, Quanfeng, et al. (1996), 'Study on detailing at the ends of notched concrete beams', Proc. on Studies and Applications of Joint Connections of Concrete Structures and of Structural Earthquake Resistant Detailing, 115-121, Qingdao, China (in Chinese)
  10. Zararis, P.D. and Papadakis, G.C. (2001), 'Diagonal shear failure and size effect in RC beams without web reinforcement', J. Struct. Eng., ASCE, 127(7), 733-742 https://doi.org/10.1061/(ASCE)0733-9445(2001)127:7(733)

Cited by

  1. Shear Failure of RC Dapped-End Beams vol.2015, 2015, https://doi.org/10.1155/2015/309135
  2. Impact of the reinforcement layout on the load capacity of reinforced concrete half-joints vol.127, 2016, https://doi.org/10.1016/j.engstruct.2016.08.061
  3. Shear strength of reinforced concrete dapped-end beams using mechanism analysis vol.63, pp.2, 2011, https://doi.org/10.1680/macr.9.00006
  4. Effect of polymer-strengthened webs on notched concrete beams vol.170, pp.6, 2017, https://doi.org/10.1680/jstbu.14.00079
  5. Strut-and-tie models for deteriorated reinforced concrete half-joints vol.161, 2018, https://doi.org/10.1016/j.engstruct.2018.01.013
  6. Discussion: Shear strength of reinforced concrete dapped-end beams using mechanism analysis vol.65, pp.12, 2013, https://doi.org/10.1680/macr.12.00214
  7. Prediction of Failure Loads of RC Dapped-End Beams vol.567, pp.1662-7482, 2014, https://doi.org/10.4028/www.scientific.net/AMM.567.463
  8. Structural Performance of RC and R-ECC Dapped-End Beams Based on the Role of Hanger or Diagonal Reinforcements Combined by ECC vol.13, pp.1, 2005, https://doi.org/10.1186/s40069-019-0356-x
  9. A stress field approach for the shear capacity of RC beams with stirrups vol.73, pp.5, 2005, https://doi.org/10.12989/sem.2020.73.5.515
  10. Effect of opening on strength characteristics of reinforced concrete dapped ends beams vol.870, pp.None, 2005, https://doi.org/10.1088/1757-899x/870/1/012078
  11. Numerical investigation of reinforced-concrete beams with half-joints vol.173, pp.10, 2005, https://doi.org/10.1680/jstbu.17.00197
  12. Response of Reinforced Concrete Dapped-End Beams Exhibiting Bond Deterioration Subjected to Static and Cyclic Loading vol.19, pp.5, 2005, https://doi.org/10.3151/jact.19.536
  13. Failure Analysis of Dapped-End Cracking in Posttensioned Bridge Girder vol.26, pp.11, 2005, https://doi.org/10.1061/(asce)be.1943-5592.0001786
  14. Behavior of Pocket-Type High-Strength RC Beams without or with Dapped Ends vol.26, pp.4, 2005, https://doi.org/10.1061/(asce)sc.1943-5576.0000624