Test Study on Bending Deformation Performance and its Size Effect Characteristics of RC Cantilever Beams

Abstract:

Studies on size effect around deformation performance of RC members are carried out relatively fewer at present. This article evaluated bending deformation capacity and size effect characteristics of RC cantilever beams by means of test method. And decomposed various deformation components with size effect factors considered, including bending, shear and bar-slip deformation and so on. The article focus on discussing bending deformation components at different loading stage and putting forward corresponding distribution functions. Calculation and experimental results show that bending deformation characteristics have significant differences on specimen dimensions, especially in nonlinear loading stage after longitudinal reinforcement yielding. Large size members have a significant concrete crushing process. ductility reserves show a growing trend with specimens size increasing. Bending deformation ability depends on average stiffness along overall beam before longitudinal reinforcement yielding. After plastic hinge forming, its bending performance will be decided by average stiffness within hinge region equivalent length.

• Periodical: Applied Mechanics and Materials (Volumes 501-504)
• Pages: 675-680
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.501-504.675
• Online since: January 2014
• Authors: Hong Yu Zhou*, Hua Ma, Chun Xiao Zhao, Yi Bo Chen
• Keywords: Experimental Study, Flexural Performance, Reinforced Concrete (RC) Beam, Size Effect

References

[1] H.Y. Zhou, Z.B. Li and X.L. Du etc. Journal of Basic Science and Engineering. 2012, 20(6): 1051-1062(in Chinese).

[2] Y. Che, Z.X. Chen and P.Y. Song etc. Journal of Civil, Architectural & Environmental Engineering. 2013, 35: 22-26(in Chinese).

[3] Alca N, Alexander S D and Macgregor J G. ACI Structural Journal. 1997, 94(1): 59-67.

[4] X.L. Du, J. Yuan and H.Y. Zhou etc. Journal of Earthquake Engineering and Engineering Vibration. 2011, 31(5): 30-38(in Chinese).

[5] H.Y. Zhou, Z.B. Li and E.W. Guo etc. Advanced Materials Research, 2012, 446/449: 3160-3164.

[6] Code for design of concrete structures (GB 50010-2002), National Standards of P.R. C(in Chinese).

[7] Z.H. Guo and X.D. Shi. Reinforced concrete theory and analysis. Beijing: Tsing Hua University Press, 2005: 214-233(in Chinese).

[8] Z.H. Wang and Y.Y. Cheng. Concrete and brick masonry structure. Guangzhou: South China University of Technology Press, 2006: 97-227(in Chinese).