Analysis of Bond and Anchorage Performances of Helical and Twisted Reinforcement Material

Abstract:

The performance of helical-effect of the helical and twisted material is elaborated in this paper. Through analyzing the parameter of the helical and twisted material, a mechanism model based on the bond of anchorage is built. Furthermore the fundamental derivation formula is done and the sensitivity is analyzed. Based on systematic study of bond anchorage performance of helical and twisted reinforcement material, the mechanical of the helical-effect was theoretically analyzed and quantitatively studied. The relationship between pullout and bond slip was studied by mechanical analysis and mathematical modeling stage by stage, the formula was established and derived. As a result, theoretical understanding of the helical-effect was deepened, providing the theoretical basis for optimization of material properties, geometry parameters and developing new materials.

• Periodical: Key Engineering Materials (Volume 539)
• Pages: 158-165
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.539.158
• Online since: January 2013
• Authors: Jun Lin Zhang, Chun Li Wang
• Keywords: Helical Material, Mathematical Model Analysis, Micro-Mechanism Model, Twisted Material

References

[1] J.L. Zhang and Y. Yang: Journal of Wuhan University of Technology. Vol. 34(2012), p.91.

[2] J.L. Zhang: Rolled and twisted bars and concrete design and construction (Tongji University Press, Shanghai, China, 2000), p.277－282.

[3] J.L. Zhang: Journal of Building Materials. Vol. 9(2006), p.172.

[4] J.L. Zhang and Y.X. Wu: Journal of Building Materials. Vol. 8(2007), p.345.

[5] R. Gustavson: Materials and Structures. Vol. 37 (2004), p.96．

[6] A.E. Naaman: Journal of Advanced Concrete Technology. Vol. 1(2003), p.241．

[7] W.P. Guan, X.L Liu and Y.L. Xu: Zhengzhou University of Technology. Vol. 18 (1997), p.9.

[8] J.L. Zhang: Concrete and Cement Products. Vol. [6](1993), p.51.

[9] Y.S. Huang: Descriptive Geometry and civil construction drawing (South China University of Technology Press, Guangzhou, China, 2003), p.86－88.

[10] C. Sujivorakul, A.E．Naaman: High Performance Finer Reinforced cement composites. Vol. 1(2003), p.35．

[11] G.J. Nammur and A.E. Naaman: ACI Materials Journal. Vol. 86(1989), p.45．

[12] A.E. Naaman, G.G. Namur, J.M. ALwan and H.S. Najm: Journal of structural engineering. Vol. 117(1991), p.2769．

[13] B. Zhou: Master Degree Thesis (Tongji University, Shanghai, China, 2004)

[14] Y.X. Wu: Master Degree Thesis (Tongji University, Shanghai, China, 2007)