Bending Capacity of T Beam with Prestressed Concrete-Filled Steel Tube

Abstract:

The prestressed composite T beam with concrete-filled steel tube is made through welding with half I-beam to connect the concrete-filled circular steel tube. The prestressed reinforcement was equipped on the T-beam. The load-bearing capacity and rigidity of the composite beam was enhanced by using prestressed force. In consideration of applying prestress, the corresponding parts stress and strain from the beginning of applying prestress to the phase of elimination of the pressure is calculated through the process of applying prestress; establish the equation of elastic flexural capacity with different location of neutral axis according to the theoretical analyses. Also use the superposition method to build the equation of the deflection. The computational results show that applying prestress reduces the deformation of the composite structure and the mechanic performance has improved which provide important theoretical basis with practical application in engineering.

• Periodical: Applied Mechanics and Materials (Volumes 368-370)
• Pages: 1048-1051
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.368-370.1048
• Online since: August 2013
• Authors: Wen Yu Hou, Lian Guang Wang, Peng Liu
• Keywords: Composite Beam of Concrete-Filled Steel Tube, Pre-Stress, Strain, Stress, T-Beam

References

[1] Lian-guang Wang. Pestressed Composite Structure of Steel and Concrete. Beijing Science Press, (2009) in press. (In Chinese).

[2] Li Liu, Lian-guang Wang. Carrying capacity of the high strength concrete vertically tensioned prestressed composite beams[C]. Proceedings of 8th International Conference for ASCCS, Harbin China, August 2006, 642-648, ISSN: 1007-9963.

[3] Lin-hai Han. The United Theory and Practice of Concrete-filled Steel Tubular Structure. Beijing: Science Press, (2007).

[4] Shan-tong Zhong. The United Theory of Concrete-filled Steel Tubular Structure[M]. Beijing: Tsinghua University Press, (2006).

[5] Mandal S, Fam A. Modeling of prestressed concrete-filled circular composite tubes subjected to bending and axial loads[J]. Journal of Structural Engineering, 2006, 132(3).

DOI: 10.1061/(asce)0733-9445(2006)132:3(449)

[6] Chen-guang Li, Guang Chen, Hang Liu, Jian-hua Duan, Fang-wei Huang. The Technology and Engineering Application of Unbonded Prestressed Structure. Beijing: China Building Industry Press, (2008).

[7] Xue-yu Xiong. The Design of Unbonded Prestressed Structure. Beijing: China Building Industry Press, (2008).