CFRP strengthening of steel i-beam against local web buckling: A numerical analysis

CFRP strengthening of steel i-beam against local web buckling: A numerical analysis

Department

Construction Engineering Department

Abstract

The use of Carbon Fibre Reinforced Polymers (CFRP) in strengthening of steel structural elements is growing every year. CFRP laminates offer an economic strengthening alternative for steel I-beams. The common method of using CFRP laminates in strengthening steel beams is by bonding the laminates (usually high modules type) to the lower flange of the beam to increase its flexural strength. However, for thin walled "slender" I-section steel beams, the risk of local buckling failure is also a major concern. Recently, it was found that bonding CFRP laminates to steel slender I-section web can enhance the local buckling of the steel section. Here, a numerical investigation is performed to investigate the effect of bonding CFRP laminates to the webs of I-section steel beams on the beam's flexural strength. The main advantage of this technique is delaying the onset of local buck-ling of the beam's web thus allowing the slender I-section to reach its yield flexural capacity. The study reveals that bonding the CFRP laminates to the web of I-sections significantly increases the critical load and may allow the beam to reach its yield capacity. © 2013 Taylor & Francis Group.

Publication Date

12-9-2013

Document Type

Book Chapter

Book Title

Research and Applications in Structural Engineering, Mechanics and Computation - Proceedings of the 5th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2013

Editors

Alphose Zingoni

ISBN

SCOPUS_ID:84889077073

Publisher

CRC Press

City

Alphose Zingoni

First Page

2421

Last Page

2425

CFRP strengthening of steel i-beam against local web buckling: A numerical analysis
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