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Web crippling of thin-walled members is often observed at loading or reaction points where concentrated forces exist. This paper reports an investigation on using CFRP (carbon fiber reinforced polymer) strengthening technique to improve the web crippling capacity of aluminium RHS (rectangular hollow section). Several types of strengthening technique were adopted in this project. They include applying...
The technique of strengthening steel structures with carbon fibre reinforced polymer (CFRP) has attracted growing attention in research field as well as in practice. A newly developed CFRP laminate with a modulus of 460GPa makes it possible to increase the elastic behaviour of strengthened steel structures. A series of tension tests were carried out with double-strap joints using different types of...
Steel/CFRP double-strap joints adhesive-bonded by epoxy were tested in tension under different temperatures ranging between 20°C and 60°C. Effective bond length was experimentally determined at 20°C first. Specimens, varied with the effective, half and twice the effective bond length and with one or three carbon fibre layers, were examined under the specified temperature range. It was found that the...
Cracked cross-beam connections made of thin-walled rectangular hollow sections (RHS) are repaired with carbon fibre reinforced polymer (CFRP) composites and constant amplitude fatigue experiments are conducted on the repaired specimens. In the previous pilot test on a T-connection of square hollow sections (SHS), early debonding happened in the corner region due to peeling effect. In this study, circumferential...
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