Temperature Response of Double-Layer Steel Truss Bridge Girders
Double-layer steel truss continuous girders are prone to significant temperature stress, deviation, torsion, and warping, thus causing adverse temperature structural responses, and also affecting the safety and durability of bridge structures. This paper presents an investigation on time-dependent c...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/11/2889 |
| _version_ | 1797459872882622464 |
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| author | Shichao Wang Gang Zhang Jie Li Yubo Wang Bohao Chen |
| author_facet | Shichao Wang Gang Zhang Jie Li Yubo Wang Bohao Chen |
| author_sort | Shichao Wang |
| collection | DOAJ |
| description | Double-layer steel truss continuous girders are prone to significant temperature stress, deviation, torsion, and warping, thus causing adverse temperature structural responses, and also affecting the safety and durability of bridge structures. This paper presents an investigation on time-dependent characteristics in the temperature field and temperature response of double-layer steel truss continuous bridge girders, fully considering the shielding effect subjected to different solar radiation angles during the high-temperature season. The time-dependent thermal boundary conditions and support conditions provided for the steel truss bridge structure were determined. Subsequently, a thermal analysis model for the entire structure of double-layer steel truss continuous girders was established to attain the temperature distribution law. The research results show that significant differences occur in the position and temperature difference of temperature gradients exhibited in the vertical, horizontal, and longitudinal directions in the double-layer steel truss bridge structure. The temperature distribution pattern within the chord section is mainly influenced by the environmental temperature and solar radiation intensity, along with the heat exchange between different panels. Thereafter, a validated temperature gradient formula for the component section has been proposed. The time-dependent laws in structural displacement, stress, and rotation angle under daily temperature cycling conditions have been revealed, thereby providing a theoretical basis for the life cycle construction and safety maintenance of double-layer steel truss structure bridges. |
| first_indexed | 2024-03-09T16:58:07Z |
| format | Article |
| id | doaj.art-e5d10732975145149a797514a2b8736f |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-09T16:58:07Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-e5d10732975145149a797514a2b8736f2023-11-24T14:33:50ZengMDPI AGBuildings2075-53092023-11-011311288910.3390/buildings13112889Temperature Response of Double-Layer Steel Truss Bridge GirdersShichao Wang0Gang Zhang1Jie Li2Yubo Wang3Bohao Chen4School of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaDouble-layer steel truss continuous girders are prone to significant temperature stress, deviation, torsion, and warping, thus causing adverse temperature structural responses, and also affecting the safety and durability of bridge structures. This paper presents an investigation on time-dependent characteristics in the temperature field and temperature response of double-layer steel truss continuous bridge girders, fully considering the shielding effect subjected to different solar radiation angles during the high-temperature season. The time-dependent thermal boundary conditions and support conditions provided for the steel truss bridge structure were determined. Subsequently, a thermal analysis model for the entire structure of double-layer steel truss continuous girders was established to attain the temperature distribution law. The research results show that significant differences occur in the position and temperature difference of temperature gradients exhibited in the vertical, horizontal, and longitudinal directions in the double-layer steel truss bridge structure. The temperature distribution pattern within the chord section is mainly influenced by the environmental temperature and solar radiation intensity, along with the heat exchange between different panels. Thereafter, a validated temperature gradient formula for the component section has been proposed. The time-dependent laws in structural displacement, stress, and rotation angle under daily temperature cycling conditions have been revealed, thereby providing a theoretical basis for the life cycle construction and safety maintenance of double-layer steel truss structure bridges.https://www.mdpi.com/2075-5309/13/11/2889double-layer steel trussshielding effecttemperature fieldstructural response |
| spellingShingle | Shichao Wang Gang Zhang Jie Li Yubo Wang Bohao Chen Temperature Response of Double-Layer Steel Truss Bridge Girders Buildings double-layer steel truss shielding effect temperature field structural response |
| title | Temperature Response of Double-Layer Steel Truss Bridge Girders |
| title_full | Temperature Response of Double-Layer Steel Truss Bridge Girders |
| title_fullStr | Temperature Response of Double-Layer Steel Truss Bridge Girders |
| title_full_unstemmed | Temperature Response of Double-Layer Steel Truss Bridge Girders |
| title_short | Temperature Response of Double-Layer Steel Truss Bridge Girders |
| title_sort | temperature response of double layer steel truss bridge girders |
| topic | double-layer steel truss shielding effect temperature field structural response |
| url | https://www.mdpi.com/2075-5309/13/11/2889 |
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