The Ultimate Bearing Capacity Analysis of RC Beams Strengthened by Externally Bonded and Anchored I-Section Steel

Abstract:

At first, mechanical behaviour and failure pattern are analyzed in the condition of full bond (with no relative deformation) with I-section and RC beam, and influence of unloading degree in this text, the theory formula of bearing capacity correspondence to failure pattern is erected, the appropriate simple calculate in engineering employ are submitted. In the condition of large the initial reinforcement ratio and the advice is given that strengthening by externally bonded and anchored I-section steel is avoided. Besides, in the condition of considering of bold-slid, the formula of interface stress is erected. Base on the relative slipping effect, the theory formula of additional moment that is derivable from slid action, and the influence of the thickness of glue, unloading degree the ratio of I-section steel to additional moment is discussed.

• Periodical: Applied Mechanics and Materials (Volumes 477-478)
• Pages: 710-713
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.477-478.710
• Online since: December 2013
• Authors: Lu Zuo*, Bo Long Ye, Wan Xiu Yu
• Keywords: Externally Bonded and Anchored, I-Section Steel, Slip Effect, Ultimate Bearing Capacity

References

[1] NIE Jian-guo, YU Zhi-wu: The research and application of steel - concrete composite beams in our country. Civil Engineering Journal, 1999, 32(2): 3~8.

[4] .

[2] ZHAO Tong, XIE Jian, DAI Zi-qiang: The experimental Research of CFRP reinforced concrete beam's fexural bearing capacity, architecture structure, 2002, 20(7): 21-25.

[3] WU Zhi-jian: The capacity of normal section reinforced concrete columns strengthened by bonded steel capacity of normal section[s]. shanghai: master thesis of Tongji University, (1997).

[4] HUANG Ping, HE Yi-bing, XIAO A-lin: Capacity reliability analysis of steel concrete joint shear[J]. Steel Structure. 2007(10).

[5] GUO Zhen-hai, SHI Xu-dong. Principle and analysis of reinforced concrete[M]. Beijing: Tsinghua University Press, (2003).

[6] ZHUO Shang-mu, JI Zhi-cang, ZHUO Chang-zhi：Analysis and reinforced concrete structure reinforcement accident. Beijing, China Building Industry Press, (1997).