Post-Fire Exposure on the Residual Mechanical and Structural Behavior of Hot-Rolled YST-240 Steel Tubes.
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| Title: | Post-Fire Exposure on the Residual Mechanical and Structural Behavior of Hot-Rolled YST-240 Steel Tubes. |
|---|---|
| Authors: | Pandey, Anjali Kumari Pravin Kumar1 (AUTHOR) anjali.pandey.civil@gmail.com, Patton, M. Longshithung1 (AUTHOR) nagaland22@gmail.com, Adak, Dibyendu1 (AUTHOR) dibu.ce@gmail.com |
| Source: | Fire Technology. Jan2026, Vol. 62 Issue 1, p1-26. 26p. |
| Subjects: | Fire exposure, Steel tubes, Deterioration of materials, Structural steel, Mechanical behavior of materials, Steel |
| Abstract: | Determining the feasibility of reusing fire-exposed hollow steel sections poses challenges for designers and structural engineers due to a lack of reliable data, as existing guidelines focus on the behavior of steel tubes at elevated temperatures during a fire but lack sufficient research on their post-fire mechanical properties. The paper details an investigation of the post-fire mechanical behavior of YST-240 (mild steel) Square Hollow Steel Tubes (HST), a material widely used in construction. A systematic experimental program was conducted in this regard on the HST stub column and tensile coupon (extracted from HST stub columns) specimens having a thickness of 3 mm. All the HST stub column and tensile coupon specimens were exposed to a range of temperatures (ambient to 1000 °C) with exposure conditions ranging from mild, moderate, and severe (i.e., 30 min, 60 min, and 90 min, respectively). The research introduces novel temperature-dependent equations to quantify the percentage degradation in both material strength and the load-bearing capacity of HST stub columns following fire exposure. Further, predictive equations are proposed for evaluating the residual mechanical properties of YST-240 steel at various temperatures and compared with the existing equations given in IS 800:2007 and AISC360-16. The findings provide critical insights into the fire-induced deterioration of structural steel, offering enhanced predictive capabilities for post-fire structural assessments and design modifications. [ABSTRACT FROM AUTHOR] |
| Copyright of Fire Technology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 190837695 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Post-Fire Exposure on the Residual Mechanical and Structural Behavior of Hot-Rolled YST-240 Steel Tubes. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Pandey%2C+Anjali+Kumari+Pravin+Kumar%22">Pandey, Anjali Kumari Pravin Kumar</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> anjali.pandey.civil@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Patton%2C+M%2E+Longshithung%22">Patton, M. Longshithung</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> nagaland22@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Adak%2C+Dibyendu%22">Adak, Dibyendu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> dibu.ce@gmail.com</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Fire+Technology%22">Fire Technology</searchLink>. Jan2026, Vol. 62 Issue 1, p1-26. 26p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Fire+exposure%22">Fire exposure</searchLink><br /><searchLink fieldCode="DE" term="%22Steel+tubes%22">Steel tubes</searchLink><br /><searchLink fieldCode="DE" term="%22Deterioration+of+materials%22">Deterioration of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Structural+steel%22">Structural steel</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Steel%22">Steel</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Determining the feasibility of reusing fire-exposed hollow steel sections poses challenges for designers and structural engineers due to a lack of reliable data, as existing guidelines focus on the behavior of steel tubes at elevated temperatures during a fire but lack sufficient research on their post-fire mechanical properties. The paper details an investigation of the post-fire mechanical behavior of YST-240 (mild steel) Square Hollow Steel Tubes (HST), a material widely used in construction. A systematic experimental program was conducted in this regard on the HST stub column and tensile coupon (extracted from HST stub columns) specimens having a thickness of 3 mm. All the HST stub column and tensile coupon specimens were exposed to a range of temperatures (ambient to 1000 °C) with exposure conditions ranging from mild, moderate, and severe (i.e., 30 min, 60 min, and 90 min, respectively). The research introduces novel temperature-dependent equations to quantify the percentage degradation in both material strength and the load-bearing capacity of HST stub columns following fire exposure. Further, predictive equations are proposed for evaluating the residual mechanical properties of YST-240 steel at various temperatures and compared with the existing equations given in IS 800:2007 and AISC360-16. The findings provide critical insights into the fire-induced deterioration of structural steel, offering enhanced predictive capabilities for post-fire structural assessments and design modifications. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Fire Technology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s10694-025-01850-7 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 26 StartPage: 1 Subjects: – SubjectFull: Fire exposure Type: general – SubjectFull: Steel tubes Type: general – SubjectFull: Deterioration of materials Type: general – SubjectFull: Structural steel Type: general – SubjectFull: Mechanical behavior of materials Type: general – SubjectFull: Steel Type: general Titles: – TitleFull: Post-Fire Exposure on the Residual Mechanical and Structural Behavior of Hot-Rolled YST-240 Steel Tubes. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Pandey, Anjali Kumari Pravin Kumar – PersonEntity: Name: NameFull: Patton, M. Longshithung – PersonEntity: Name: NameFull: Adak, Dibyendu IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: Jan2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 00152684 Numbering: – Type: volume Value: 62 – Type: issue Value: 1 Titles: – TitleFull: Fire Technology Type: main |
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