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Experimental Study on FRP-Strengthened Steel Tubular Members under Lateral Impact

Journal Article


Abstract


  • Hollow structural members are highly vulnerable structural components subjected to transverse impact loads. These tubular

    members have been used widely in both onshore and offshore structures where lateral impact forces can be expected from moving ve-

    hicles/vessels or terrorist attacks. Thus, strengthening of steel hollow tubular members is required to safely carry both service static and impose

    d

    dynamic impact loads. This paper presents the results from a series of tests on bare and fiber-reinforced polymer (FRP) strengthened circular

    hollow-section (CHS) steel members subjected to transverse impact loading at midspan. A total of 14 (2 bare and 12 strengthened) medium-scale

    specimens were tested to investigate the effect of FRP wrapping on the global and local deformation capacities of strengthened members under

    drop-hammer impact. Both carbon-fiber-reinforced polymer (CFRP) and glass-fiber-reinforced polymer (GFRP) sheets were used as strength-

    ening materials. The results indicate that the FRP strengthening of the tubes enhances their impact-resistance capacity by reducing lateral

    displacements up to 29% compared to bare steel CHS specimens. The influence of FRP type, CFRP orientation, CFRP thickness, and effective

    bond length on the structural response and failure behavior of wrapped members were investigated. The results showed that the application of

    FRP in the longitudinal direction was effective to control the global deformations whereas the hoop layers were effective in reducing local inward

    deformations of CHS members.

UOW Authors


  •   Alam, Md Iftekharul (external author)
  •   Fawzia, Sabrina (external author)
  •   Zhao, Xiao-Ling (external author)
  •   Alex M. Remennikov

Publication Date


  • 2017

Citation


  • Alam, M., Fawzia, S., Zhao, X. & Remennikov, A. M. (2017). Experimental Study on FRP-Strengthened Steel Tubular Members under Lateral Impact. Journal of Composites for Construction, 21 (5), 04017022-1-04017022-14.

Scopus Eid


  • 2-s2.0-85020270366

Start Page


  • 04017022-1

End Page


  • 04017022-14

Volume


  • 21

Issue


  • 5

Place Of Publication


  • United States

Abstract


  • Hollow structural members are highly vulnerable structural components subjected to transverse impact loads. These tubular

    members have been used widely in both onshore and offshore structures where lateral impact forces can be expected from moving ve-

    hicles/vessels or terrorist attacks. Thus, strengthening of steel hollow tubular members is required to safely carry both service static and impose

    d

    dynamic impact loads. This paper presents the results from a series of tests on bare and fiber-reinforced polymer (FRP) strengthened circular

    hollow-section (CHS) steel members subjected to transverse impact loading at midspan. A total of 14 (2 bare and 12 strengthened) medium-scale

    specimens were tested to investigate the effect of FRP wrapping on the global and local deformation capacities of strengthened members under

    drop-hammer impact. Both carbon-fiber-reinforced polymer (CFRP) and glass-fiber-reinforced polymer (GFRP) sheets were used as strength-

    ening materials. The results indicate that the FRP strengthening of the tubes enhances their impact-resistance capacity by reducing lateral

    displacements up to 29% compared to bare steel CHS specimens. The influence of FRP type, CFRP orientation, CFRP thickness, and effective

    bond length on the structural response and failure behavior of wrapped members were investigated. The results showed that the application of

    FRP in the longitudinal direction was effective to control the global deformations whereas the hoop layers were effective in reducing local inward

    deformations of CHS members.

UOW Authors


  •   Alam, Md Iftekharul (external author)
  •   Fawzia, Sabrina (external author)
  •   Zhao, Xiao-Ling (external author)
  •   Alex M. Remennikov

Publication Date


  • 2017

Citation


  • Alam, M., Fawzia, S., Zhao, X. & Remennikov, A. M. (2017). Experimental Study on FRP-Strengthened Steel Tubular Members under Lateral Impact. Journal of Composites for Construction, 21 (5), 04017022-1-04017022-14.

Scopus Eid


  • 2-s2.0-85020270366

Start Page


  • 04017022-1

End Page


  • 04017022-14

Volume


  • 21

Issue


  • 5

Place Of Publication


  • United States