Study on the Effect of Bridge Deck Spacing on Characteristics of Smoke Temperature Field in a Bridge Fire
The numerical simulation method is used to simulate the distribution characteristics of the smoke temperature field of a double-deck bridge smoke temperature field during tanker fire under natural ventilation. The influence of the distance between double decks on the truss and ceiling temperature fi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Fire |
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| Online Access: | https://www.mdpi.com/2571-6255/5/4/114 |
| _version_ | 1797432244816576512 |
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| author | Weiguang An Lei Shi Hailei Wang Taike Zhang |
| author_facet | Weiguang An Lei Shi Hailei Wang Taike Zhang |
| author_sort | Weiguang An |
| collection | DOAJ |
| description | The numerical simulation method is used to simulate the distribution characteristics of the smoke temperature field of a double-deck bridge smoke temperature field during tanker fire under natural ventilation. The influence of the distance between double decks on the truss and ceiling temperature field change in the double-deck bridge is investigated. The results show that the range of high-temperature area gradually decreases with the increase in bridge deck spacing. The maximum excess temperature function of the tunnel ceiling is also applicable to the bridge, but the coefficient is smaller than that of the tunnel experimental formula. An equation is proposed to predict the maximum excess temperature of the truss under different bridge deck spacings. As the bridge deck spacing increases, the maximum excess temperature decreases. The excess temperature of the truss increases along the truss, and the maximum excess temperature appears at the top of the truss. Based on the energy equation, an equation for the excess temperature of the truss is established. As the vertical height increases, the excess temperature of the truss above the fire source exponentially increases. The research results will contribute to the fire hazard evaluation and safety design of bridges. |
| first_indexed | 2024-03-09T09:57:36Z |
| format | Article |
| id | doaj.art-9ba88e09554f443986ebbb4e581ebfc7 |
| institution | Directory Open Access Journal |
| issn | 2571-6255 |
| language | English |
| last_indexed | 2024-03-09T09:57:36Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fire |
| spelling | doaj.art-9ba88e09554f443986ebbb4e581ebfc72023-12-01T23:41:14ZengMDPI AGFire2571-62552022-08-015411410.3390/fire5040114Study on the Effect of Bridge Deck Spacing on Characteristics of Smoke Temperature Field in a Bridge FireWeiguang An0Lei Shi1Hailei Wang2Taike Zhang3Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou 221116, ChinaJiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou 221116, ChinaGuang Dong Bay Area Traffic Construction Investment Co., Ltd., Guangzhou 510699, ChinaGuang Dong Bay Area Traffic Construction Investment Co., Ltd., Guangzhou 510699, ChinaThe numerical simulation method is used to simulate the distribution characteristics of the smoke temperature field of a double-deck bridge smoke temperature field during tanker fire under natural ventilation. The influence of the distance between double decks on the truss and ceiling temperature field change in the double-deck bridge is investigated. The results show that the range of high-temperature area gradually decreases with the increase in bridge deck spacing. The maximum excess temperature function of the tunnel ceiling is also applicable to the bridge, but the coefficient is smaller than that of the tunnel experimental formula. An equation is proposed to predict the maximum excess temperature of the truss under different bridge deck spacings. As the bridge deck spacing increases, the maximum excess temperature decreases. The excess temperature of the truss increases along the truss, and the maximum excess temperature appears at the top of the truss. Based on the energy equation, an equation for the excess temperature of the truss is established. As the vertical height increases, the excess temperature of the truss above the fire source exponentially increases. The research results will contribute to the fire hazard evaluation and safety design of bridges.https://www.mdpi.com/2571-6255/5/4/114double-deck bridgetanker fireFDS numerical simulationmaximum excess temperaturetemperature distribution |
| spellingShingle | Weiguang An Lei Shi Hailei Wang Taike Zhang Study on the Effect of Bridge Deck Spacing on Characteristics of Smoke Temperature Field in a Bridge Fire Fire double-deck bridge tanker fire FDS numerical simulation maximum excess temperature temperature distribution |
| title | Study on the Effect of Bridge Deck Spacing on Characteristics of Smoke Temperature Field in a Bridge Fire |
| title_full | Study on the Effect of Bridge Deck Spacing on Characteristics of Smoke Temperature Field in a Bridge Fire |
| title_fullStr | Study on the Effect of Bridge Deck Spacing on Characteristics of Smoke Temperature Field in a Bridge Fire |
| title_full_unstemmed | Study on the Effect of Bridge Deck Spacing on Characteristics of Smoke Temperature Field in a Bridge Fire |
| title_short | Study on the Effect of Bridge Deck Spacing on Characteristics of Smoke Temperature Field in a Bridge Fire |
| title_sort | study on the effect of bridge deck spacing on characteristics of smoke temperature field in a bridge fire |
| topic | double-deck bridge tanker fire FDS numerical simulation maximum excess temperature temperature distribution |
| url | https://www.mdpi.com/2571-6255/5/4/114 |
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