Thermal-mechanical responses of steel portal frame under varying fire scenes with diverse protective measures.

Saved in:

Bibliographic Details
Title:	Thermal-mechanical responses of steel portal frame under varying fire scenes with diverse protective measures.
Authors:	Zhang, GuangPing¹ zhangguangping8570@163.com, Zhang, ZhaoBo² 120220908361@lzu.edu.cn, Ma, HongYuan¹ 1940704685@qq.com, Liu, HaiYang³ 2901986623@qq.com, Dong, ChangHong¹ 1940704685@qq.com
Source:	Archives of Civil Engineering (Polish Academy of Sciences). 2026, Vol. 72 Issue 2, p467-483. 17p.
Subjects:	Temperature distribution, Structural frames, Thermal analysis, Simulation methods & models, Thermal stresses, Fire exposure, Fire prevention
Abstract:	This study investigates the thermal-mechanical responses of steel portal frame without fire pro-tection and with different fire protection strategies across three fire scenes. Temperature fields and heating curves were derived for the steel portal frame in three fire scenes using FDS simulations. Abaqus was employed to perform thermal-mechanical coupling simulations on the steel portal frame under eight conditions, both unprotected and protected with two types of fire protection. A comprehensive comparison and analysis of the simulation results yielded the following key conclusions: in all three fire scenes, the absence of fire protection and the implementation of two different fire protection measures lead to distinct failure modes in the steel portal frame, yet the lateral displacement response patterns remain consistent. Although fire protection strategies can delay the onset of displacement responses in the steel portal frame during fires, their effectiveness in reducing these responses is limited. Furthermore, fire-resistant boards alter the heat transfer path within the steel portal frame, increasing the temperature differential across the component sections and subsequently amplifying bending deformation. The findings provide valuable in-sights that enhance fire safety design for steel portal frame under diverse conditions. [ABSTRACT FROM AUTHOR]
	Copyright of Archives of Civil Engineering (Polish Academy of Sciences) is the property of Polish Academy of Sciences 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

Description
Abstract:	This study investigates the thermal-mechanical responses of steel portal frame without fire pro-tection and with different fire protection strategies across three fire scenes. Temperature fields and heating curves were derived for the steel portal frame in three fire scenes using FDS simulations. Abaqus was employed to perform thermal-mechanical coupling simulations on the steel portal frame under eight conditions, both unprotected and protected with two types of fire protection. A comprehensive comparison and analysis of the simulation results yielded the following key conclusions: in all three fire scenes, the absence of fire protection and the implementation of two different fire protection measures lead to distinct failure modes in the steel portal frame, yet the lateral displacement response patterns remain consistent. Although fire protection strategies can delay the onset of displacement responses in the steel portal frame during fires, their effectiveness in reducing these responses is limited. Furthermore, fire-resistant boards alter the heat transfer path within the steel portal frame, increasing the temperature differential across the component sections and subsequently amplifying bending deformation. The findings provide valuable in-sights that enhance fire safety design for steel portal frame under diverse conditions. [ABSTRACT FROM AUTHOR]
ISSN:	12302945
DOI:	10.24425/ace.2026.158621