Approximations in alternate load path capacity of welded unreinforced flange-bolted web connections

Farshad Hashemi Rezvani; Hamid R. Ronagh

doi:10.1061/9780784481325.002

Approximations in alternate load path capacity of welded unreinforced flange-bolted web connections

Farshad Hashemi Rezvani, Hamid R. Ronagh

Western Sydney University

Research output: Chapter in Book / Conference Paper › Conference Paper › peer-review

Abstract

In the event of sudden column removal, beam-to-column connections play a significant role in transferring the load carried by the damaged parts to the intact ones. This role involves experiencing a magnified bending moment and axial load which ultimately produces catenary action in the beam. This mechanism can eventually replace the flexural action in carrying the gravitational loading. Therefore, the beam and the connection must be able to develop and maintain a sufficiently large axial tension which explains the important role that connections play in mitigating progressive collapse. However, the strength and ductility of the out-of-plane members and connections affect the total load carrying capacity of structures employing moment connections. In this study, using component-based modelling, the effect of modelling these structural elements in the final result is investigated. Analysis results of a generic structure revealed that ignoring the out-of-plane members and connection can lead to overestimate the load carrying capacity of the affected span by 72%.

Original language	English
Title of host publication	Structures Congress 2018: Buildings and Disaster Management, Selected Papers from the Structures Congress 2018, April 19-21, 2018, Fort Worth, Texas
Publisher	American Society of Civil Engineers
Pages	11-20
Number of pages	10
DOIs	https://doi.org/10.1061/9780784481325.002
Publication status	Published - 2018
Event	Structures Congress - Duration: 19 Apr 2018 → …

Conference

Conference	Structures Congress
Period	19/04/18 → …

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10.1061/9780784481325.002

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Rezvani, F. H., & Ronagh, H. R. (2018). Approximations in alternate load path capacity of welded unreinforced flange-bolted web connections. In Structures Congress 2018: Buildings and Disaster Management, Selected Papers from the Structures Congress 2018, April 19-21, 2018, Fort Worth, Texas (pp. 11-20). American Society of Civil Engineers. https://doi.org/10.1061/9780784481325.002

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title = "Approximations in alternate load path capacity of welded unreinforced flange-bolted web connections",

abstract = "In the event of sudden column removal, beam-to-column connections play a significant role in transferring the load carried by the damaged parts to the intact ones. This role involves experiencing a magnified bending moment and axial load which ultimately produces catenary action in the beam. This mechanism can eventually replace the flexural action in carrying the gravitational loading. Therefore, the beam and the connection must be able to develop and maintain a sufficiently large axial tension which explains the important role that connections play in mitigating progressive collapse. However, the strength and ductility of the out-of-plane members and connections affect the total load carrying capacity of structures employing moment connections. In this study, using component-based modelling, the effect of modelling these structural elements in the final result is investigated. Analysis results of a generic structure revealed that ignoring the out-of-plane members and connection can lead to overestimate the load carrying capacity of the affected span by 72%.",

author = "Rezvani, {Farshad Hashemi} and Ronagh, {Hamid R.}",

year = "2018",

doi = "10.1061/9780784481325.002",

language = "English",

pages = "11--20",

booktitle = "Structures Congress 2018: Buildings and Disaster Management, Selected Papers from the Structures Congress 2018, April 19-21, 2018, Fort Worth, Texas",

publisher = "American Society of Civil Engineers",

note = "Structures Congress ; Conference date: 19-04-2018",

}

Rezvani, FH & Ronagh, HR 2018, Approximations in alternate load path capacity of welded unreinforced flange-bolted web connections. in Structures Congress 2018: Buildings and Disaster Management, Selected Papers from the Structures Congress 2018, April 19-21, 2018, Fort Worth, Texas. American Society of Civil Engineers, pp. 11-20, Structures Congress, 19/04/18. https://doi.org/10.1061/9780784481325.002

Approximations in alternate load path capacity of welded unreinforced flange-bolted web connections. / Rezvani, Farshad Hashemi; Ronagh, Hamid R.
Structures Congress 2018: Buildings and Disaster Management, Selected Papers from the Structures Congress 2018, April 19-21, 2018, Fort Worth, Texas. American Society of Civil Engineers, 2018. p. 11-20.

Research output: Chapter in Book / Conference Paper › Conference Paper › peer-review

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N2 - In the event of sudden column removal, beam-to-column connections play a significant role in transferring the load carried by the damaged parts to the intact ones. This role involves experiencing a magnified bending moment and axial load which ultimately produces catenary action in the beam. This mechanism can eventually replace the flexural action in carrying the gravitational loading. Therefore, the beam and the connection must be able to develop and maintain a sufficiently large axial tension which explains the important role that connections play in mitigating progressive collapse. However, the strength and ductility of the out-of-plane members and connections affect the total load carrying capacity of structures employing moment connections. In this study, using component-based modelling, the effect of modelling these structural elements in the final result is investigated. Analysis results of a generic structure revealed that ignoring the out-of-plane members and connection can lead to overestimate the load carrying capacity of the affected span by 72%.

AB - In the event of sudden column removal, beam-to-column connections play a significant role in transferring the load carried by the damaged parts to the intact ones. This role involves experiencing a magnified bending moment and axial load which ultimately produces catenary action in the beam. This mechanism can eventually replace the flexural action in carrying the gravitational loading. Therefore, the beam and the connection must be able to develop and maintain a sufficiently large axial tension which explains the important role that connections play in mitigating progressive collapse. However, the strength and ductility of the out-of-plane members and connections affect the total load carrying capacity of structures employing moment connections. In this study, using component-based modelling, the effect of modelling these structural elements in the final result is investigated. Analysis results of a generic structure revealed that ignoring the out-of-plane members and connection can lead to overestimate the load carrying capacity of the affected span by 72%.

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ER -

Approximations in alternate load path capacity of welded unreinforced flange-bolted web connections

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