Investigation on Extreme Temperature Gradient Action of Composite Girder Bridges Considering Regional Difference
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Bibliographic Details
| Author(s): |
Jiang Liu
(School of Highway, Chang’an University, Xi’an, Shaanxi, China; Shaanxi Union Research Center of University and Enterprise for Bridge Intelligent Construction Technology, Xi’an, Shaanxi, China)
Yongjian Liu (School of Highway, Chang’an University, Xi’an, Shaanxi, China; Shaanxi Union Research Center of University and Enterprise for Bridge Intelligent Construction Technology, Xi’an, Shaanxi, China) Zhiyuan Ma (School of Highway, Chang’an University, Xi’an, Shaanxi, China) Yi Lyu (School of Highway, Chang’an University, Xi’an, Shaanxi, China) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022 | ||||
| Published in: | IABSE Congress Nanjing 2022 | ||||
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| Page(s): | 1950-1958 | ||||
| Total no. of pages: | 9 | ||||
| DOI: | 10.2749/nanjing.2022.1950 | ||||
| Abstract: |
To reach an accurate calculation of the effect of composite girder bridges under extreme temperature gradient action, long-term temperature measurements and finite element simulations were performed on a composite girder segment in Huangnan Prefecture, Qinghai Province for more than one year. By setting the maximum thermal self-stress and secondary stress as indexes and considering different sunshine conditions between interior and exterior girders webs of composite girder bridges, 3 temperature gradient patterns were established for multi- girder bridges. Based on the long-term historical meteorological data collected from 839 weather stations in China, a “layer-by-layer drawing method” was put forward to the isoline map of extreme temperature gradient values. Compared with the current specification, the temperature action values provided are more suitable for the Limit State Design Method. |
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| Keywords: |
bridge engineering extreme temperature action steel-concrete composite girder bridge regional difference isoline map
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| Copyright: | © 2022 International Association for Bridge and Structural Engineering (IABSE) | ||||
| License: | This creative work is copyrighted material and may not be used without explicit approval by the author and/or copyright owner. |
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