Bridge Fire Risk Assessment on the Highway in South Korea

Jeoung, Chan; Kim, Woo Seok; Gil, Heung Bae; Lee, Il Keun; Yun, Sung Hwan

doi:10.4028/www.scientific.net/amr.1025-1026.854

Cited by 3 publications

(9 citation statements)

References 4 publications

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“…e re intensities were selected as 10 MW, 20 MW, 30 MW, 50 MW, 100 MW, and 130 MW, and the bridge materials were classi ed into steel and concrete bridges. A total of 144 FDS analyses were performed based on the bridge materials, the re intensity, and the vertical clearance of bridges ranging from a minimum of 4 m to a maximum of 15 m. Based on the FDS analysis results, it was considered that a bridge with a vertical clearance of 15 m would not be a ected by a re [9,13]. e FDS analysis time was determined according to the re ending time depicted in the standard re curve for the FDS model shown in Table 6 and Figure 6, and the properties of the standard re curve are shown in Table 10.…”

Section: Fds Analysis Resultsmentioning

confidence: 99%

“…In consideration of the environmental and design parameters, the degree of the bridge fire severity was confirmed. Since the fire heat has a tendency to rise, a fire under the bridge causes damage to both the superstructure and the substructure supporting the bridge [6,9,13]. It is therefore assumed that the fire is centered at midspan because the largest vertical deflection magnitudes occurred when the fire location was centered at midspan, both longitudinally and transversely [9].…”

Section: Fds Analysismentioning

confidence: 99%

“…In order to determine the mobilization time criteria for fire suppression, the firefighting practice of each country and the "mobilization time criteria for fire suppression" in the United Kingdom were confirmed and are presented as references [9,13].…”

Section: Mobilization Time Criteria For Fire Suppressionmentioning

confidence: 99%

“…e X axis and the Y axis show the vertical clearance (4∼15 m) and re intensity (10∼130 MW), respectively, while the Z axis shows the mobilization time criteria for re suppression in Table 7 (less than 5 minutes, 5-8 minutes, 8-10 minutes, 10-20 minutes, and more than 20 minutes). Also, to establish e ective response plans from the risk grade models, an existing response plan for the bridge re [9,13,34] was classi ed into mitigation and preparedness response plans.…”

Section: Risk Grade Model Associated With Design and Environmental Pamentioning

confidence: 99%

“…While quantitative risk assessment is important to minimize the gravity of a fire, in Korea, research on fire prevention in civil structures has primarily focused on tunnel fires and has been scarce in comparison with that in building structures. In South Korea, the risk assessment of fire accidents on highways has been carried out using the risk assessment method by C. Cremona (2012) [13] to classify the permissible risk groups and the mitigating risk groups in order to select bridges that require fire protection design [14].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Semiquantitative Fire Risk Grade Model and Response Plans on a National Highway Bridge

Ann

Choi

Lee

et al. 2019

Advances in Civil Engineering

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For the last ten years, the number of cases of large-scale fires which occur on bridges, tunnels, and underpasses has increased. Such fires cause primary and secondary damage, including loss of human life, traffic congestion, and extensive financial damage. Therefore, a risk grade model and effective response plan need to be established for such cases in order to minimize the social and economic costs of bridge fires. In this study, the hazard factors contributing to bridge fires were selected to apply a risk grade model. A total of 144 bridge fire simulations were performed to calculate a surface temperature based on time by using Fire Dynamics Simulation (FDS). A risk grade in accordance with the degree of surface damage state caused by temperature of bridges was presented, and the mobilization time criteria for fire suppression were proposed. The surface temperatures based on time can be classified according to the vertical clearance and mobilization time criteria for fire suppression. Through the classified maximum surface temperatures based on time for bridges, the risk grade can be estimated according to the degree of surface damage state caused by temperature. In order to evaluate the applicability of the established risk grade model to the actual bridge, the arrival time taken from the bridge to the fire station was calculated through a Geographic Information System (GIS) network analysis, and the grades for actual bridge cases were assessed. The purpose of this bridge fire risk grade model is to establish a disaster prevention strategy based on risk grades and to minimize the subsequent social damage by determining a priori the disaster scale.

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Section: Fds Analysis Resultsmentioning

confidence: 99%

Section: Fds Analysismentioning

confidence: 99%

Section: Mobilization Time Criteria For Fire Suppressionmentioning

confidence: 99%

Section: Risk Grade Model Associated With Design and Environmental Pamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Semiquantitative Fire Risk Grade Model and Response Plans on a National Highway Bridge

Ann

Choi

Lee

et al. 2019

Advances in Civil Engineering

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Residual Strength of Steel Structures After Fire Events Considering Material Damages

Tang

Wei

et al. 2019

Arab J Sci Eng

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Bridge Fire Vulnerability Hierarchy Assessment Based on the Weighted Topsis Method

Guo

Zhou

et al. 2022

Sustainability

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With the increasing traffic volume and gradually higher percentage of hazardous goods transport vehicles, bridge fire accidents are more frequent and the resulting losses are striking. Therefore, the assessment of fire risk in bridges has important implications. In this paper, we identify and establish a bridge fire vulnerability indicator system based on vulnerability theory from three aspects: the susceptibility to fire, its resistance to reversal, and its exposure during a fire. On the basis of grading fire vulnerability and making a description of the status of each grade, the corresponding index values of each grade were established by the method of assigning values to the qualitative indexes, and then the empowering TOPSIS method was applied to calculate the relative closeness of each indicator to the ideal status, so as to establish a bridge fire vulnerability grade evaluation model. Finally, using a bridge as an example, it was verified that the assessment method was reasonably feasible by calculating the relative proximity of the bridge to the ideal condition, resulting in a fire vulnerability grade of I for the bridge, which corresponded to its fire history.

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Bridge Fire Risk Assessment on the Highway in South Korea

Cited by 3 publications

References 4 publications

Semiquantitative Fire Risk Grade Model and Response Plans on a National Highway Bridge

Semiquantitative Fire Risk Grade Model and Response Plans on a National Highway Bridge

Residual Strength of Steel Structures After Fire Events Considering Material Damages

Bridge Fire Vulnerability Hierarchy Assessment Based on the Weighted Topsis Method

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