Behaviour of hybrid FRP composite I-girder with concrete deck

Manalo, Allan and Mutsuyoshi, Hiroshi and Aravinthan, Thiru and Matsui, Takahiro (2009) Behaviour of hybrid FRP composite I-girder with concrete deck. In: 9th International Symposium of the Fiber Reinforced Polymer Reinforcement for Reinforced Concrete Structures (FRPRCS-9): Current Challenges and Future Trends, 13-15 Jul 2009, Sydney, Australia.

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The behavior of hybrid Fiber Reinforced Polymer (FRP) I-girder with compositely acting concrete deck is discussed in this paper. The innovative feature of this hybrid composite girder optimizes the combined use of carbon fiber reinforced polymer (CFRP) and glass fiber reinforced polymer (GFRP) in flanges to maximize structural performance while reducing the overall cost by using only GFRP in the web section. Preliminary investigations revealed that the hybrid FRP girder failed due to local buckling, separation of laminates and crushing near the loading point in the compression flange with the compressive and tensile strain smaller than the expected maximum strains. In view of improving its structural performance, concrete deck was provided on top of hybrid FRP composite girder to give stability on the thin compression flange because of its high compressive strength. Two types of shear connections were trialed to provide composite action between the hybrid FRP girder and concrete deck. Results of the experiment showed that a good composite action was achieved between hybrid FRP girder and concrete deck using steel u-bolts combined with epoxy for shear connection. The composite action leads to a higher tensile strain in the hybrid FRP girder and resulted to efficient utilization of the FRP materials. The results of the Fibre Model Analysis using the effective mechanical properties of the hybrid FRP showed a good agreement with the experimental data.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to paper due to publisher's copyright restrictions. The full paper for the proceedings of the FRPRCS-9 is in CD form.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 31 Oct 2010 04:49
Last Modified: 23 Nov 2014 23:04
Uncontrolled Keywords: hybrid FRP composite; carbon fibre; glass fibre; concrete deck; composite; connection
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090502 Construction Engineering
09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
Socio-Economic Objective: B Economic Development > 87 Construction > 8703 Construction Materials Performance and Processes > 870301 Cement and Concrete Materials

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