The Initial Assessment of Fire Safety of a Plane Steel Frame According to System Reliability Analysis
The purpose of this research was to indicate the importance of an efficient design of steel frame structures, taking into account the fire design situation. In the case of steel frame structures, the typical mechanisms of failure (sway, beam, and mixed) are well known. Using this knowledge, combined...
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MDPI AG
2025-07-01
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| Series: | Applied Sciences |
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| author | Katarzyna Kubicka |
| author_facet | Katarzyna Kubicka |
| author_sort | Katarzyna Kubicka |
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| description | The purpose of this research was to indicate the importance of an efficient design of steel frame structures, taking into account the fire design situation. In the case of steel frame structures, the typical mechanisms of failure (sway, beam, and mixed) are well known. Using this knowledge, combined with a reliability assessment of single nodes, may let designers reduce both the amount of material used for a structure and the total cost of the structure. In this article, one-story, single-nave frames with different loads were analyzed. Two types of loads were analyzed: symmetrical and unsymmetrical. Both cases resulted in different failure paths. The static analysis of the structure in the following minutes of the fire duration was carried out in the Robot Structural Analysis programme. The temperature load was computed according to the Eurocode recommendation with the assumption that the temperature of fire gases is described by the standard fire curve. Afterward, the system reliability analysis for the selected failure paths was conducted. Additionally, the displacement analysis was performed in the following minutes of the fire. The biggest challenge in the proposed method is that there are many potential failure paths, and checking all of them is very time-consuming, even when using advanced computers. Therefore, only selected collapse modes were analyzed. |
| format | Article |
| id | doaj-art-97b51d16c47b4aeea7d9d1ee4eac308e |
| institution | Matheson Library |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj-art-97b51d16c47b4aeea7d9d1ee4eac308e2025-07-25T13:12:48ZengMDPI AGApplied Sciences2076-34172025-07-011514794710.3390/app15147947The Initial Assessment of Fire Safety of a Plane Steel Frame According to System Reliability AnalysisKatarzyna Kubicka0Faculty of Architecture and Civil Engineering, Kielce University of Technology, 1000-Lecia Państwa Polskiego 7, 25-314 Kielce, PolandThe purpose of this research was to indicate the importance of an efficient design of steel frame structures, taking into account the fire design situation. In the case of steel frame structures, the typical mechanisms of failure (sway, beam, and mixed) are well known. Using this knowledge, combined with a reliability assessment of single nodes, may let designers reduce both the amount of material used for a structure and the total cost of the structure. In this article, one-story, single-nave frames with different loads were analyzed. Two types of loads were analyzed: symmetrical and unsymmetrical. Both cases resulted in different failure paths. The static analysis of the structure in the following minutes of the fire duration was carried out in the Robot Structural Analysis programme. The temperature load was computed according to the Eurocode recommendation with the assumption that the temperature of fire gases is described by the standard fire curve. Afterward, the system reliability analysis for the selected failure paths was conducted. Additionally, the displacement analysis was performed in the following minutes of the fire. The biggest challenge in the proposed method is that there are many potential failure paths, and checking all of them is very time-consuming, even when using advanced computers. Therefore, only selected collapse modes were analyzed.https://www.mdpi.com/2076-3417/15/14/7947frame steel structurereliability analysisbeam and sway mechanismsreliability indexfire safetysymmetrical and unsymmetrical loads |
| spellingShingle | Katarzyna Kubicka The Initial Assessment of Fire Safety of a Plane Steel Frame According to System Reliability Analysis Applied Sciences frame steel structure reliability analysis beam and sway mechanisms reliability index fire safety symmetrical and unsymmetrical loads |
| title | The Initial Assessment of Fire Safety of a Plane Steel Frame According to System Reliability Analysis |
| title_full | The Initial Assessment of Fire Safety of a Plane Steel Frame According to System Reliability Analysis |
| title_fullStr | The Initial Assessment of Fire Safety of a Plane Steel Frame According to System Reliability Analysis |
| title_full_unstemmed | The Initial Assessment of Fire Safety of a Plane Steel Frame According to System Reliability Analysis |
| title_short | The Initial Assessment of Fire Safety of a Plane Steel Frame According to System Reliability Analysis |
| title_sort | initial assessment of fire safety of a plane steel frame according to system reliability analysis |
| topic | frame steel structure reliability analysis beam and sway mechanisms reliability index fire safety symmetrical and unsymmetrical loads |
| url | https://www.mdpi.com/2076-3417/15/14/7947 |
| work_keys_str_mv | AT katarzynakubicka theinitialassessmentoffiresafetyofaplanesteelframeaccordingtosystemreliabilityanalysis AT katarzynakubicka initialassessmentoffiresafetyofaplanesteelframeaccordingtosystemreliabilityanalysis |