Finite Element Analysis of Shear Strength of Reinforced Concrete Beams after Fire

Abstract:

Article Preview

Shear strength and stiffness of fire-damaged reinforced concrete (RC) beams were researched. The nonlinear finite element method (FEM) was developed to simulate shear strength of fire-damaged RC beams. Considering mechanical properties deterioration of concrete and steel reinforcing bar, the parameters of fire-damaged RC beams, including fire exposure time, shear span to depth ratios, concrete strength, diameters of stirrups and spacing of stirrups, were analyzed. Based on numerical analysis, the change of shear strength and stiffness of fire-damaged RC beams were identified. The results showed that shear strength and stiffness of fire-damaged RC beams changed under different parameters. With increase of fire exposure time or increase of shear span to depth ratio or decrease of concrete strength, shear strength and stiffness of fire-damaged RC beams descended obviously. With decrease of diameters of stirrups or increase of spacing of stirrups, shear strength of fire-damaged RC beams descended gradually, but stiffness of fire-damaged RC beams had little change.

Info:

Periodical:

Advanced Materials Research (Volumes 671-674)

Edited by:

Yong Huang, Tai Bao and Hong Wang

Pages:

474-478

Citation:

K. Xiang et al., "Finite Element Analysis of Shear Strength of Reinforced Concrete Beams after Fire", Advanced Materials Research, Vols. 671-674, pp. 474-478, 2013

Online since:

March 2013

Export:

Price:

$38.00

[1] A. M. Sanad, J. M. Rotter, A. S. Usmani, M. A. O'Connor: Fire Safety Journal. Vol. 35 (2000), p.165.

[2] A. Y. Elghazouli, B. A. Izzuddin, A. J. Richardson: Fire Safety Journal. Vol. 35 (2000), p.279.

[3] V. K. R. Kodur, M. Dwaikat: Cement and Concrete Composites. Vol. 30 (2008), p.431.

[4] M. B. Dwaikat, V. K. R. Kodur: Fire Safety Journal. Vol. 43 (2008), p.291.

[5] V. K. R. Kodur, M. Dwaikat, N. Raut: Engineering Structures. Vol. 31 (2009), p.2368.

[6] B. Wu, J. Z. Lu: Fire Safety Journal. Vol. 44 (2009), p.522.

[7] T. T. Lie: Journal of Structural Engineering. Vol. 120 (1994), p.1489.

[8] W. X. Duan: Industrial Construction in Chinese. Vol. 15 (1985), p.51.

[9] K. Xiang, G. H. Wang, Z. D. Lu, and B. Zhao: Fire Science and Technology (in Chinese). Vol. 29 (2010), p.4.

[10] M. B. Min, Y. H. Li, B. L. Gao, L. N. Huang, W. G. Bai, and Y. Q. Li: Diagnosis and Treatment of Buildings after Fire (in Chinese) (Jiangsu Science and Technology Publications, China 1994).