Experimental study on fire temperature field of extra-long highway tunnel under the effect of auxiliary channel design parameters
Accounting for the auxiliary channel's design parameters, 96 model tests on tunnel fires were conducted. The primary investigation centred on the influence of inclined shaft angle, the diameter and height of the vertical shaft on the temperature fields within extra-long highway tunnels during f...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25000723 |
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| author | Yinjun Tan Jie Li Huayun Li Zhisheng Li |
| author_facet | Yinjun Tan Jie Li Huayun Li Zhisheng Li |
| author_sort | Yinjun Tan |
| collection | DOAJ |
| description | Accounting for the auxiliary channel's design parameters, 96 model tests on tunnel fires were conducted. The primary investigation centred on the influence of inclined shaft angle, the diameter and height of the vertical shaft on the temperature fields within extra-long highway tunnels during fires. It was observed that the HRR of a square-shaped fire source correlates linearly with the burner's surface area. The design parameters of the inclined and vertical shafts predominantly affect the temperature distribution in the vicinity of the tunnel's intersection. As the inclined shaft's angle is increased from 3° to 12°, and the vertical shaft's diameter and height are increased from 0.4 m to 0.7 m and from 4 m to 10 m, respectively, the maximum temperature variation percentages are 23.7 %, 27.3 %, and 25 %, respectively. When the angle and length of the inclined shaft are kept within 12° and 100m, changes in the shaft's angle have little impact on the temperature of the vault in front of the intersection. An increase in the vertical shaft's height from 4m to 10m results in a 14 % maximum temperature difference in the intersection's front area. |
| format | Article |
| id | doaj-art-ba86b429ec174e54b49b53ed3829bd53 |
| institution | Kabale University |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-ba86b429ec174e54b49b53ed3829bd532025-02-02T05:27:32ZengElsevierCase Studies in Thermal Engineering2214-157X2025-03-0167105812Experimental study on fire temperature field of extra-long highway tunnel under the effect of auxiliary channel design parametersYinjun Tan0Jie Li1Huayun Li2Zhisheng Li3School of Architecture and Civil Engineering, Xihua University, Chengdu, 610039, ChinaSchool of Emergency Management, Xihua University, Chengdu, 610039, ChinaSchool of Architecture and Civil Engineering, Xihua University, Chengdu, 610039, ChinaSchool of Mining and Geomatics Engineering, Hebei University of Engineering, Handan, 056038, China; Corresponding author.Accounting for the auxiliary channel's design parameters, 96 model tests on tunnel fires were conducted. The primary investigation centred on the influence of inclined shaft angle, the diameter and height of the vertical shaft on the temperature fields within extra-long highway tunnels during fires. It was observed that the HRR of a square-shaped fire source correlates linearly with the burner's surface area. The design parameters of the inclined and vertical shafts predominantly affect the temperature distribution in the vicinity of the tunnel's intersection. As the inclined shaft's angle is increased from 3° to 12°, and the vertical shaft's diameter and height are increased from 0.4 m to 0.7 m and from 4 m to 10 m, respectively, the maximum temperature variation percentages are 23.7 %, 27.3 %, and 25 %, respectively. When the angle and length of the inclined shaft are kept within 12° and 100m, changes in the shaft's angle have little impact on the temperature of the vault in front of the intersection. An increase in the vertical shaft's height from 4m to 10m results in a 14 % maximum temperature difference in the intersection's front area.http://www.sciencedirect.com/science/article/pii/S2214157X25000723Extra-long highway tunnel fireLongitudinal ventilationAuxiliary channelDesign parametersVault temperatureModel test |
| spellingShingle | Yinjun Tan Jie Li Huayun Li Zhisheng Li Experimental study on fire temperature field of extra-long highway tunnel under the effect of auxiliary channel design parameters Case Studies in Thermal Engineering Extra-long highway tunnel fire Longitudinal ventilation Auxiliary channel Design parameters Vault temperature Model test |
| title | Experimental study on fire temperature field of extra-long highway tunnel under the effect of auxiliary channel design parameters |
| title_full | Experimental study on fire temperature field of extra-long highway tunnel under the effect of auxiliary channel design parameters |
| title_fullStr | Experimental study on fire temperature field of extra-long highway tunnel under the effect of auxiliary channel design parameters |
| title_full_unstemmed | Experimental study on fire temperature field of extra-long highway tunnel under the effect of auxiliary channel design parameters |
| title_short | Experimental study on fire temperature field of extra-long highway tunnel under the effect of auxiliary channel design parameters |
| title_sort | experimental study on fire temperature field of extra long highway tunnel under the effect of auxiliary channel design parameters |
| topic | Extra-long highway tunnel fire Longitudinal ventilation Auxiliary channel Design parameters Vault temperature Model test |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25000723 |
| work_keys_str_mv | AT yinjuntan experimentalstudyonfiretemperaturefieldofextralonghighwaytunnelundertheeffectofauxiliarychanneldesignparameters AT jieli experimentalstudyonfiretemperaturefieldofextralonghighwaytunnelundertheeffectofauxiliarychanneldesignparameters AT huayunli experimentalstudyonfiretemperaturefieldofextralonghighwaytunnelundertheeffectofauxiliarychanneldesignparameters AT zhishengli experimentalstudyonfiretemperaturefieldofextralonghighwaytunnelundertheeffectofauxiliarychanneldesignparameters |