Failure Mechanism of Empty and Concrete-Filled CFRP Box Beams
Publication: Journal of Composites for Construction
Volume 14, Issue 3
Abstract
This paper highlights the failure mechanism of beams composed of carbon fiber-reinforced polymer (CFRP) box with and without infill concrete, and subjected to four point bending and axial load. In an experimental study performed with 20 small scale beams from five types of CFRP laminates, the beams failed near a loading plate. This study employs finite-element analysis to investigate the failure mechanism. Concrete is modeled as an isotropic material capable of cracking in tension and crushing in compression. CFRP is modeled as an orthotropic material with linear constitutive relation, and Tsai-Wu failure criterion is employed for CFRP. The analysis reproduces the observed beam failure. Local bending of top flange governs the failure of empty beams. CFRP failure near loading plate governs the failure of filled beams. Failure of CFRP occurs with more than 60% contribution by longitudinal compressive stress and the rest by in-plane shear stress. The contribution of the longitudinal compression increases with an increase in axial load. Moreover, the beams with more fibers in the transverse direction fail by longitudinal compression.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This work is part of a collaborated study project between the University of Tokyo, and joint researchers—Shimizu Corporation and Toray Industries, Incorporated. The writers acknowledge Shimizu Corporation, Japan and Toray Industries, Incorporated, Japan for granting permission to use experimental data and for their support in undertaking this study. The opinions expressed here are those of the writers and not necessarily those of Shimizu Corporation and Toray Industries, Incorporated.
References
American Concrete Institute (ACI). (1999). “Building code requirements for structural concrete (318-95) and commentary (318R-95).” ACI 318-95, Detroit.
Fardis, M. N., and Khalili, H. H. (1981). “Concrete encased in fiberglass-reinforced plastic.” ACI J., 78(6), 440–446.
Gautam, B. P. (2007). “Finite-element analysis on deformation, damage and failure mechanisms of concrete-filled CFRP box beam under transverse and axial loads.” MS thesis, Univ. of Tokyo.
Gautam, B. P., and Matsumoto, T. (2009). “Shear deformation and interface behaviour of concrete-filled CFRP box beams.” Compos. Struct., 89(1), 20–27.
Hayes, M. D., and Lesko, J. J. (2007). “Failure analysis of a hybrid composite structural beam.” Composites, Part A, 38(3), 691–698.
Hyer, M. W. (1998). Stress analysis of fiber-reinforced composite materials, McGraw-Hill, N.Y.
Mallick, P. K. (1993). Fiber reinforced composites: Materials, manufacturing and design, 2nd Ed., Marcel Dekker, N.Y.
Matsumoto, T., et al. (2007). “Shear behavior of concrete-filled CFRP box beam.” Proc., 62nd JSCE Annual Meeting (CD ROM), JSCE, Tokyo, 491–492.
Mirmiran, A., and Shahawy, M. (1995). “A novel FRP-concrete composite construction for the infrastructure.” Proc., Structural Congress XIII, ASCE, Boston, 1663–1666.
Mirmiran, A., Shahawy, M., and Samaan, M. (1999). “Strength and ductility of hybrid FRP-concrete beam-columns.” J. Struct. Eng., 125(10), 1085–1093.
MSC.Software. (2001). MSC.Marc volume A: Theory and user information, version 2001, MSC.Software Corporation, Santa Ana, Calif.
Samaan, M., Mirmiran, A., and Shahawy, M. (1998). “Model of concrete confined by fiber composites.” J. Struct. Eng., 124(9), 1025–1031.
Toray. (2007). “Functional and composite properties.” ⟨http://www.torayca.com/techref/index.html⟩ (Jan. 15, 2007).
Tsai, S. W., and Wu, E. M. (1971). “A general theory of strength for anisotropic materials.” J. Compos. Mater., 5(1), 58–80.
Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 14 • Issue 3 • June 2010
Pages: 336 - 345
Copyright
© 2010 ASCE.
History
Received: Nov 30, 2008
Accepted: Nov 3, 2009
Published online: Nov 6, 2009
Published in print: Jun 2010
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.