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Effects of span-to-depth ratios on moment connection damage evolution under catenary action

Journal Article


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Abstract


  • This paper proposes an improved method for determining the gravity resistance of a moment resisting beam-column assembly following an interior column loss. The proposed method accounts for the connection's damage evolution and for the catenary mechanism developed by the assembly as it deflects downward. Through a full-scale laboratory test and finite element simulations, the complete responses of moment resisting beam-column assemblies including the connection's damage evolution are investigated under different beam span-to-depth ratios. The welded unreinforced flange-bolted web (WUF-BW) connection method is used for its robustness in developing the catenary action. It is found that, under the same span-to-depth ratio, beam-column assemblies exhibit similar normalized load-rotation relationships, even with different beam depths. The assembly with a larger span-to-depth ratio is able to develop the gravity resistance earlier, and provides a higher ultimate resistance by developing a more effective catenary mechanism. On the other hand, the assembly with a smaller span-to-depth ratio exhibits a more ductile response. A simplified curve model of the gravity resistance development of a moment beam-column assembly with damage evolution has been proposed for a convenient assessment of the progressive collapse resistance following a central column loss.

Authors


  •   Li, Ling (external author)
  •   Wang, Wei (external author)
  •   Teh, Lip H.
  •   Chen, Yiyi (external author)

Publication Date


  • 2017

Citation


  • Li, L., Wang, W., Teh, L. H. & Chen, Y. (2017). Effects of span-to-depth ratios on moment connection damage evolution under catenary action. Journal of Constructional Steel Research, 139 18-29.

Scopus Eid


  • 2-s2.0-85029690571

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1685&context=eispapers1

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/684

Number Of Pages


  • 11

Start Page


  • 18

End Page


  • 29

Volume


  • 139

Place Of Publication


  • United Kingdom

Abstract


  • This paper proposes an improved method for determining the gravity resistance of a moment resisting beam-column assembly following an interior column loss. The proposed method accounts for the connection's damage evolution and for the catenary mechanism developed by the assembly as it deflects downward. Through a full-scale laboratory test and finite element simulations, the complete responses of moment resisting beam-column assemblies including the connection's damage evolution are investigated under different beam span-to-depth ratios. The welded unreinforced flange-bolted web (WUF-BW) connection method is used for its robustness in developing the catenary action. It is found that, under the same span-to-depth ratio, beam-column assemblies exhibit similar normalized load-rotation relationships, even with different beam depths. The assembly with a larger span-to-depth ratio is able to develop the gravity resistance earlier, and provides a higher ultimate resistance by developing a more effective catenary mechanism. On the other hand, the assembly with a smaller span-to-depth ratio exhibits a more ductile response. A simplified curve model of the gravity resistance development of a moment beam-column assembly with damage evolution has been proposed for a convenient assessment of the progressive collapse resistance following a central column loss.

Authors


  •   Li, Ling (external author)
  •   Wang, Wei (external author)
  •   Teh, Lip H.
  •   Chen, Yiyi (external author)

Publication Date


  • 2017

Citation


  • Li, L., Wang, W., Teh, L. H. & Chen, Y. (2017). Effects of span-to-depth ratios on moment connection damage evolution under catenary action. Journal of Constructional Steel Research, 139 18-29.

Scopus Eid


  • 2-s2.0-85029690571

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1685&context=eispapers1

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/684

Number Of Pages


  • 11

Start Page


  • 18

End Page


  • 29

Volume


  • 139

Place Of Publication


  • United Kingdom