Behaviour and Safety of Building Structures in Fire

A special issue of Buildings (ISSN 2075-5309). This special issue belongs to the section "Building Structures".

Deadline for manuscript submissions: 10 March 2025 | Viewed by 3873

Special Issue Editors


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Guest Editor
School of Civil Engineering, Central South University, Changsha 410083, China
Interests: fire resistance of structures; progressive collapse of structures; high-performance metallic materials and structures

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Guest Editor
Department of Civil and Structural Engineering, The University of Sheffield, Sheffield S10 2TN, UK
Interests: sustainable concrete in fire; fire resistance of greener building systems; robustness and disproportionate progressive collapse of high-rise building structures in fire

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Guest Editor
School of Transportation, Southeast University, Nanjing 214135, China
Interests: fire dynamics simulation; fire resistance evaluation of bridge structures; application of deep learning algorithms; intelligent disaster prevention of infrastructures

Special Issue Information

Dear Colleagues,

Fire is a great threat to building structures; it can cause serious damages and even the collapse of entire buildings. The behaviour and safety of building structures in fire involve the development of building fires, fire detection and extinction, temperature-dependent material properties, the behaviour of structural elements, and global behaviour and collapse resistance of building frames. In addition, different structural systems behave differently in fire. 

This Special Issue welcomes original research articles and review papers related to the behaviour and safety of building structures (e.g. steel structures, composite structures, concrete structures and timber structures) in fire. Topics of interest include (but are not limited to) the following:

  • Building fires;
  • Temperature-dependent material properties;
  • Behaviour of structural elements in fire;
  • Global behaviour and collapse resistance of building frames;
  • Post-fire behaviour and rehabilitation of building structures;
  • Emerging technologies related to the fire safety and structural fire engineering of buildings.

Dr. Binhui Jiang
Dr. Shan-Shan Huang
Dr. Xi-Qiang Wu
Guest Editors

Manuscript Submission Information

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Keywords

  • building fire
  • building structure
  • structural element
  • building material
  • fire and post-fire behaviour
  • post-fire rehabilitation
  • artificial intelligence
  • sensor network

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Published Papers (4 papers)

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Research

20 pages, 9100 KiB  
Article
Numerical Modeling of Uniaxial Corroded Reinforced Concrete Columns Exposed to Fire
by Guangzhong Ba, Weijian Wu, Hongchao Dai, Yu Jiao and Jie Zhang
Buildings 2024, 14(9), 2737; https://doi.org/10.3390/buildings14092737 - 31 Aug 2024
Viewed by 467
Abstract
Corroded concrete structures remain at risk of fire damage throughout their lifespan. This study explores the fire resistance of reinforced concrete columns, considering the simultaneous impact of corrosion and high temperatures. Thermal–structural models of the corroded concrete columns are developed using SAFIR software [...] Read more.
Corroded concrete structures remain at risk of fire damage throughout their lifespan. This study explores the fire resistance of reinforced concrete columns, considering the simultaneous impact of corrosion and high temperatures. Thermal–structural models of the corroded concrete columns are developed using SAFIR software (2022). The numerical results are compared with published test data on temperature distributions and axial displacement–time curves. Then, parametric analyses are conducted to investigate the influence of various factors, such as corrosion degree, concrete compressive strength, cover thickness, and fire exposure models, on the fire performance of the concrete columns. The findings reveal that corrosion significantly undermines fire resistance: notably, columns with severe corrosion exhibited a 47% reduction in fire resistance. Conversely, increased concrete strength can bolster the fire resistance of intact columns, particularly when the concrete cover is minimal. Enhancing the cover thickness proves to be an effective strategy to mitigate the thermal degradation of steel reinforcements, thereby extending the columns’ fire resistance by as much as 23%. The study introduces coefficients to quantify the effects of corrosion, fire exposure, material strength, and cover thickness, culminating in a practical formula to calculate the fire endurance of corroded reinforced concrete columns. This formula could complement existing fire safety regulations. Full article
(This article belongs to the Special Issue Behaviour and Safety of Building Structures in Fire)
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26 pages, 5358 KiB  
Article
Probabilistic Analysis of Strength in Retrofitted X-Joints under Tensile Loading and Fire Conditions
by Hossein Nassiraei
Buildings 2024, 14(7), 2105; https://doi.org/10.3390/buildings14072105 - 9 Jul 2024
Cited by 3 | Viewed by 564
Abstract
In the present study, a total of 360 FE analyses were carried out on tubular X-joints strengthened with collar plates under brace tension under laboratory testing conditions (20 °C) and various fire conditions. The generated FE models were validated based on 31 tests. [...] Read more.
In the present study, a total of 360 FE analyses were carried out on tubular X-joints strengthened with collar plates under brace tension under laboratory testing conditions (20 °C) and various fire conditions. The generated FE models were validated based on 31 tests. The FE analyses produced a comprehensive dataset that encapsulated resistance metrics, with detailed simulations of welds, contacts, and the incorporation of non-linear geometrical and material attributes. Twelve theoretical probability density functions (PDFs) were matched to the constructed histograms, with the maximum likelihood (ML) technique utilized to assess the parameters of these fitted PDFs. The theoretical PDFs, rigorously evaluated against the Anderson–Darling, Kolmogorov–Smirnov, and Chi-squared tests, identified the Generalized Petrov distribution as the optimal model for capturing the resistance behaviors of X-joints under tensile load and varying fire conditions. The findings have led to the proposition of five detailed theoretical PDFs and cumulative distribution functions (CDFs), introducing a novel perspective for assessing and reinforcing the structural resilience of strengthened CHS X-joints in engineering practices. Full article
(This article belongs to the Special Issue Behaviour and Safety of Building Structures in Fire)
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16 pages, 6440 KiB  
Article
Research on the Scale Fire Test and Fire Resistance of the One-Way Slab of a Metro
by Peiyun Qiu, Jintao Duan, Zhan Yang, Jianyong Liu and Weitian Lu
Buildings 2024, 14(6), 1695; https://doi.org/10.3390/buildings14061695 - 6 Jun 2024
Viewed by 492
Abstract
To address the difficulty in conducting fire tests to verify the fire-resistance limit of large one-way slabs with heavy loads in a metro, a scale fire test method is proposed based on the bearing capacity calculation of the one-way slab under fire. The [...] Read more.
To address the difficulty in conducting fire tests to verify the fire-resistance limit of large one-way slabs with heavy loads in a metro, a scale fire test method is proposed based on the bearing capacity calculation of the one-way slab under fire. The scale fire test method adapted the hypothesis that the deflection of the one-way slab under fire is close to a half-sine function and the plane section hypothesis. The validity of this hypothesis is verified through fire tests and finite element simulations. The scale fire test method achieves a similar temperature field and mechanical behavior between the scaled model and full-scale model of the one-way slab. The results of the fire tests showed that the temperature field and mechanical behavior of the scaled model were consistent with those of the full-scale model, with an error in fire resistance of 4.7%. The calculation results and fire test results are essentially consistent, with an error of 6.5%, and according to the calculation of the one-way slab fire-resistance limit, the key factor affecting the fire resistance of the one-way slab under fire is the temperature of the bottom rebars. Using the scale fire test method, the size effect of the one-way slab under fire still exists, and larger slabs have a greater deformation capacity. Full article
(This article belongs to the Special Issue Behaviour and Safety of Building Structures in Fire)
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15 pages, 5108 KiB  
Article
Influences of Species and Density on the Horizontal Flame Spread Behavior of Densified Wood
by Yang Zhou, Wenxi Qiu, Penghui Zhou, Zhengyang Wang, Xiaonan Zhang, Xiangyu Mao and Rongwei Bu
Buildings 2024, 14(3), 620; https://doi.org/10.3390/buildings14030620 - 27 Feb 2024
Cited by 1 | Viewed by 907
Abstract
Densified wood possesses outstanding mechanical properties and serves as a desired construction material for modern timber buildings. However, the limited research on its flame behavior hinders its broader applications. The authors of this paper experimentally and analytically investigated the influence of wood species [...] Read more.
Densified wood possesses outstanding mechanical properties and serves as a desired construction material for modern timber buildings. However, the limited research on its flame behavior hinders its broader applications. The authors of this paper experimentally and analytically investigated the influence of wood species and density on horizontal flame spread behavior. Densified oak and densified fir were tested. The flame spread rate decreased with wood density in both densified wood types. Their values were close at the same density. The mass loss rate (m˙) of the densified wood decreased with the increase in wood density. The densified oak had higher m˙ due to its lower lignin content. Dimensionless correlations between the m˙ and density were obtained which agree with the experiments. The flame heights (Lf) of the densified wood also decreased with the increase in wood density. The densified oak had higher Lf due to its higher m˙. As the densified wood density increased, the radiation (and conduction) was reduced (and enhanced), but the convection remained constant. The densified oak had lower convection, lower conduction, and higher radiation than the densified fir at the same density. Gas-phase heat transfer was dominant in the flame spread of the densified wood, but conduction was also significant as its contribution can be as high as 70% of gaseous heat transfer. Full article
(This article belongs to the Special Issue Behaviour and Safety of Building Structures in Fire)
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