Prediction formulas of buckling and critical temperatures of restrained box-section steel columns in fire.
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| Title: | Prediction formulas of buckling and critical temperatures of restrained box-section steel columns in fire. |
|---|---|
| Authors: | Jiang, Binhui1 (AUTHOR), Peng, Fuxiong1 (AUTHOR), Chen, Zhengrong1 (AUTHOR), Wang, Liping1 (AUTHOR) wlp2016@csu.edu.cn |
| Source: | Advances in Structural Engineering. Jul2026, Vol. 29 Issue 9, p1821-1836. 16p. |
| Subjects: | Iron & steel columns, Mathematical models, Fire resistant materials, Temperature, Sensitivity analysis, Deformations (Mechanics) |
| Abstract: | As important parameters reflecting the fire resistance of restrained steel columns, buckling and critical temperatures have been extensively studied. However, the existing simplified design methods for buckling or critical temperature are based on column models with either pin-ended or with large rotational restraints, their applications on steel columns with limited rotational restraint stiffness ratios, i.e., rotational restraint stiffness ratios smaller than the critical rotational restraint stiffness ratio, is questionable. In this paper, parametric analyses were performed on a validated numerical column model with rotational restraint stiffness ratio spanning from 0.0001 to 10.0. Additionally, the influences of slenderness ratio, load ratio, and axial restraint stiffness ratio were also considered. Results reveal significant errors when using the existing simplified design methods to predict the buckling and critical temperatures of steel columns with limited rotational restraint stiffness ratios. Based on the parametric analyses results, new prediction formulas for buckling and critical temperatures of box-section steel columns were proposed. Results of the proposed formulas are in close alignment with those of the parametric analyses across the full range of considered parameters. Moreover, the effectiveness of the proposed formulas was further validated by test results in literatures. [ABSTRACT FROM AUTHOR] |
| Copyright of Advances in Structural Engineering is the property of Sage Publications Inc. 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 |
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| Header | DbId: egs DbLabel: Engineering Source An: 194609522 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Prediction formulas of buckling and critical temperatures of restrained box-section steel columns in fire. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Jiang%2C+Binhui%22">Jiang, Binhui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Peng%2C+Fuxiong%22">Peng, Fuxiong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Zhengrong%22">Chen, Zhengrong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Liping%22">Wang, Liping</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wlp2016@csu.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Advances+in+Structural+Engineering%22">Advances in Structural Engineering</searchLink>. Jul2026, Vol. 29 Issue 9, p1821-1836. 16p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Iron+%26+steel+columns%22">Iron & steel columns</searchLink><br /><searchLink fieldCode="DE" term="%22Mathematical+models%22">Mathematical models</searchLink><br /><searchLink fieldCode="DE" term="%22Fire+resistant+materials%22">Fire resistant materials</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature%22">Temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Sensitivity+analysis%22">Sensitivity analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Deformations+%28Mechanics%29%22">Deformations (Mechanics)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: As important parameters reflecting the fire resistance of restrained steel columns, buckling and critical temperatures have been extensively studied. However, the existing simplified design methods for buckling or critical temperature are based on column models with either pin-ended or with large rotational restraints, their applications on steel columns with limited rotational restraint stiffness ratios, i.e., rotational restraint stiffness ratios smaller than the critical rotational restraint stiffness ratio, is questionable. In this paper, parametric analyses were performed on a validated numerical column model with rotational restraint stiffness ratio spanning from 0.0001 to 10.0. Additionally, the influences of slenderness ratio, load ratio, and axial restraint stiffness ratio were also considered. Results reveal significant errors when using the existing simplified design methods to predict the buckling and critical temperatures of steel columns with limited rotational restraint stiffness ratios. Based on the parametric analyses results, new prediction formulas for buckling and critical temperatures of box-section steel columns were proposed. Results of the proposed formulas are in close alignment with those of the parametric analyses across the full range of considered parameters. Moreover, the effectiveness of the proposed formulas was further validated by test results in literatures. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Advances in Structural Engineering is the property of Sage Publications Inc. 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.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=194609522 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1177/13694332251391478 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 1821 Subjects: – SubjectFull: Iron & steel columns Type: general – SubjectFull: Mathematical models Type: general – SubjectFull: Fire resistant materials Type: general – SubjectFull: Temperature Type: general – SubjectFull: Sensitivity analysis Type: general – SubjectFull: Deformations (Mechanics) Type: general Titles: – TitleFull: Prediction formulas of buckling and critical temperatures of restrained box-section steel columns in fire. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Jiang, Binhui – PersonEntity: Name: NameFull: Peng, Fuxiong – PersonEntity: Name: NameFull: Chen, Zhengrong – PersonEntity: Name: NameFull: Wang, Liping IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 13694332 Numbering: – Type: volume Value: 29 – Type: issue Value: 9 Titles: – TitleFull: Advances in Structural Engineering Type: main |
| ResultId | 1 |
