Mechanical Behavior Analysis of Concrete Short Columns Pushed out from Over-Thick Steel Tube

Abstract:

An axial symmetry elasticity model of the concrete short column which is pushed out from over-thick steel tube is set up, and the equations of displacement method are derived. The experiment of push-out test of the short column was carried out. On the base of the test, the adhesive thin-layer between the concrete and the over-thick steel tube is introduced. The experimental results show that the shearing stress in the adhesive thin-layer is uniform along the height, which is coincide with the results obtained by the axial symmetry elasticity model of the concrete short column set up in this paper. Therefore, the adhesive shearing stress between steel tube and concrete can be precisely measured by the push-out test of the concrete short column and the relation of shearing stress-shearing strain of the adhesive thin-layer can be determined.

• Periodical: Applied Mechanics and Materials (Volumes 580-583)
• Pages: 2912-2915
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.580-583.2912
• Online since: July 2014
• Authors: Jie Min Liu*, Jia Liang Yang, Shuang Liu
• Keywords: Adhesive Shearing Stress, Adhesive Thin-Layer of Steel Tube/Concrete, Mechanical Model, Over-Thick Steel Tube

References

[1] L. Han: Structures of concrete-filled steel tube: theories and practice, Beijing: Science Press, (2004).

[2] Kang Xiliang, Zhao Hongtie, Xie Jianyang: Journal of Xian University of Architecture and Technology(2006), Vol. 38(3), p.321(in Chinese).

[3] Kang Xiliang, Zhao Hongtie, Xue Jianyang: Eng. Mech. (2007), Vol. 24(1), p.101.

[4] G. Monti, E. Spacone: Struc. Eng. (2000), Vol. 126(6), p.654.

[5] E. Spacone, S. Limkatanyu: Structural Journal(2000), Vol. 97(6), p.831.

[6] G. Chen, G. Baker: Journal of Structural Engineering(2003), Vol. 129(11), p.1515.