Query：
学者姓名：卫璇
Refining：
Year
Type
Indexed by
Source
Complex
Co-
Language
Clean All
Abstract ：
To investigate the fire performance of steel frame structures in a real-world fire scenario, a 5-story steel frame building with reinforced concrete floors was chosen as the subject. A thermal-mechanical coupling model of the steel frame structure was established by ABAQUS utilizing beam and shell elements. The fire scenario was modeled using FDS, and the temperature profile during the entire fire event was generated through the fire dynamics simulation. Using finite element simulation, the study examined the failure modes, deformation-time curves of column members, internal force-time curves for beams and columns, as well as the critical temperatures of the steel frame structures under various fire conditions. Additionally, a parameter analysis was conducted to explore the effects of the beam-column stiffness ratio, beam-column bending moment ratio, and fireproof coating thickness on the fire response of the steel frame buildings. The results indicated that the maximum temperature derived from the FDS simulation exceeded that of the ISO-834 standard temperature curve. Therefore, relying exclusively on the ISO-834 standard curve in performance-based fire design could result in unsafe conditions. Except for the top floor, the collapse process of rooms at the same location on different floors exhibited similarities in case of fire. The membrane effect of the floor slab was found to increase the critical temperature of the steel frame structure by approximately 20 %, thereby improving the structure's resistance to collapse. Finally, the collapse paths of the steel frame buildings during a fire were proposed based on the process of internal force redistribution.
Keyword ：
Collapse mechanism Collapse mechanism Critical temperature Critical temperature Finite element simulation Finite element simulation Fire scenario Fire scenario Steel frame structure Steel frame structure
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wei, Xuan , Liu, Jiepeng , Xu, Lei . The collapse mechanism and paths of steel frame structures under designed fire scenarios [J]. | STRUCTURES , 2025 , 76 . |
| MLA | Wei, Xuan 等. "The collapse mechanism and paths of steel frame structures under designed fire scenarios" . | STRUCTURES 76 (2025) . |
| APA | Wei, Xuan , Liu, Jiepeng , Xu, Lei . The collapse mechanism and paths of steel frame structures under designed fire scenarios . | STRUCTURES , 2025 , 76 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
