Mechanics Behavior of Concrete-Filled Square Steel Tube Columns

Abstract:

This study presents a simplified analytical method for predicting the ultimate strength of compressed concrete filled square steel tube columns based on the triple shear unified yield criterion. Based on the triple shear unified yield criterion theory solutions of thick tube, the calculation formulas of axial bearing capacity of the concrete-filled square steel tube columns were deduced with considerations of the restriction effects of steel tube and the effects of the intermediate principal stressed. The results show that the intermediate principal stress effect parameter b has influences on the ultimate bearing capacity. The formulas in the paper have significance in exerting material potential and save material.

• Periodical: Applied Mechanics and Materials (Volumes 256-259)
• Pages: 662-665
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.256-259.662
• Online since: December 2012
• Authors: Xiao Yan Luo, Wei Ping Liu
• Keywords: Concrete-Filled Square Steel Tube Column, Mechanic Behavior, Triple Shear Unified Yield Criterion

References

[1] Linhai Han, Zhong Tao: China Civil Engneering Journal. Vol. 34(2001), pp.17-25.

[2] S. Kenji, N. Hiroyuki, M. Shosuke, et al: Journal of Structural Engineering, Vol. 130(2004), pp.180-188.

[3] Kyungsoo Chung, Suhee Park, Sungmo Choi: Journal of Constructional Steel Research, Vol. 64 (2008), p.1505–1515.

[4] P.P. Michelis: J. Eng. Mech ASCE, Vol. 111 (1985), pp.1049-1066.

[5] Dongjun Xu, Naiguang Geng: Acta Mechanica Solida Sinica, Vol. 6 (1985), pp.72-80.

[6] Maohong Yu: Twin shear theory and its application, Beijing, (1998).

[7] Xiaorong Hu, Taiqing Lin: The Chinese Journal of Nonferrous Metals. Vol. 17(2007) , pp.207-215.