Fire resistance performance of L-section fireproof board and thin concrete encased skeleton steel column

IF 5.6 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures Pub Date : 2025-01-11 DOI:10.1016/j.engstruct.2025.119629

Xue-Chun Liu , Xu-Ze Feng , Xuesen Chen , Wei Zhou , Bin Xu , Zheng Yin

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引用次数: 0

Abstract

To investigate the fire resistance of L-section fireproof board and thin concrete encased steel (L-FBTCES) column, four columns were tested under constant axial compression and ISO-834 standard fire, varying the load ratio and concrete encasement thickness. The failure modes, thermal response, deformation response, and fire resistance time were obtained. The thermal response curve of the steel exhibited three stages, and the maximum temperature of the steel was below 600°C during the test. The fire resistance time for all specimens exceeded 120 minutes. The resistance time decreased with the increase of the load ratio and slightly increased with the increase of the concrete encasement. The thermo-mechanical coupling models were established, and the numerical parametrical analysis was conducted. Based on the existing specifications for composite columns and considering the adjusted load ratio and fireproof board thickness, a modified calculation method for L-FBTCES columns was proposed and validated by the numerical analysis results.

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来源期刊

Engineering Structures 工程技术-工程：土木

CiteScore

10.20

自引率

14.50%

发文量

1385

审稿时长

67 days

期刊介绍： Engineering Structures provides a forum for a broad blend of scientific and technical papers to reflect the evolving needs of the structural engineering and structural mechanics communities. Particularly welcome are contributions dealing with applications of structural engineering and mechanics principles in all areas of technology. The journal aspires to a broad and integrated coverage of the effects of dynamic loadings and of the modelling techniques whereby the structural response to these loadings may be computed. The scope of Engineering Structures encompasses, but is not restricted to, the following areas: infrastructure engineering; earthquake engineering; structure-fluid-soil interaction; wind engineering; fire engineering; blast engineering; structural reliability/stability; life assessment/integrity; structural health monitoring; multi-hazard engineering; structural dynamics; optimization; expert systems; experimental modelling; performance-based design; multiscale analysis; value engineering. Topics of interest include: tall buildings; innovative structures; environmentally responsive structures; bridges; stadiums; commercial and public buildings; transmission towers; television and telecommunication masts; foldable structures; cooling towers; plates and shells; suspension structures; protective structures; smart structures; nuclear reactors; dams; pressure vessels; pipelines; tunnels. Engineering Structures also publishes review articles, short communications and discussions, book reviews, and a diary on international events related to any aspect of structural engineering.