Reliability Studies on Concrete Filled FRP Tube Columns Using Different Design Code Models

Abstract:

The paper presents an in-deep reliability study on concrete filled FRP tube columns using four well-known design codes which include the ACI 4402R-08, the CNR-DT200, UK code (TR55) , and the Chinese code. Monte Carlo method is utilized to calculate the reliability index of the column. The simulation results reveal that the reliability index depends heavily on the design code and the ACI 4402R-08 design code is found to be the most reliable one for the design of concrete filled FRP tube columns. The variation of the unconfined concrete strength has remarkable influences on the reliability of the column while the variation of the FRP tensile strength can hardly affect the reliability. Consequently, it is concluded that the partial safety factor for concrete or the FRP proposed in existing design codes may be suitably enhanced in order to make up the reliability loss due to the increment of the variation of concrete.

• Periodical: Applied Mechanics and Materials (Volumes 405-408)
• Pages: 735-739
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.405-408.735
• Online since: September 2013
• Authors: Ying Wu Zhou*, Li Li Sui, Feng Xing
• Keywords: Confined Concrete, Design Code, FRP Tube Columns, Rehabilitation, Reliability

References

[1] American Concrete Institute (ACI) Committee 440. Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures. Rep., Technical Committee Document 440. 2R-02, Detroit. (2002).

DOI: 10.14359/51700867

[2] CNR-DT200. Guide for the design and construction of externally bonded FRP systems for strengthening existing structures (Materials, RC and PC Structures, masonry structures), CNR, National Research Council, Rome, Italy (2004).

DOI: 10.1061/40753(171)159

[3] Concrete Society Technical Report No. 55. Design guidance for strengthening concrete structures using fibre composite materials, The Concrete Society, Second edition (2004).

[4] National Standards of Peoples Republic of China (GB50608-2010). Code for Infrastructure Application of FRP Composites. China (2009).

[5] American Concrete Institute (ACI) Committee 318. Building code requirements for structural concrete. American Concrete Institute, Farmington Hills, Mich., (2005).

[6] L. Lam, and J.G. Teng. Construction and Building Materials, Vol. 17, No. 6-7, (2003), pp.471-489.

[7] Y.W. Zhou, L.L. Sui, F. Xing and L.Y. Wu. Applied Mechanics and Materials. Vols. 275-277 (2013), pp.1364-1369.

[8] Y.W. Zhou, F. Xing, and L.L. Sui. Applied Mechanics and Materials. Vols. 275-277 (2013), pp.1233-1238.