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http://dx.doi.org/10.5762/KAIS.2019.20.3.602

Vertical Temperature Difference of Steel Box Girder Bridge Considering Asphalt Thickness of Concrete Deck  

Lee, Seong-Haeng (Department of Civil Engineering, Pusan National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.20, no.3, 2019 , pp. 602-608 More about this Journal
Abstract
The purpose of this study was to calculate the temperature difference of the sectional elevation according to the asphalt thickness of the steel box girder bridge deck and provide data on the design basis accordingly. Asphalt thicknesses produced four steel box girder model specimens of 0mm, 50mm, 100m and 150mm. In each model, 17 to 23 temperature sensors were attached to upper concrete and steel box girders. Six temperature gauges were selected to compare the temperature difference with Euro codes. The maximum and lowest temperature were calculated at the reference atmospheric temperature of each model, and the temperature difference (slope) was calculated based on this calculation. Four models of temperature difference are presented at each model. The 0mm to 100mm temperature difference models showed a -0.9 to -1.5 degree lower temperature difference compared to the temperature difference of Euro codes at the top of the slab. Overall, the measured temperature difference was found to be between 5.45% and 8.33% compared to the Euro code. The standard error coefficient, which was calculated by multiplying the average temperature with the standard error, was calculated from a range of 2.50 to 2.51 times the average at the top and bottom. It is estimated that the proposed temperature difference model can be used as a basic data when calculating temperature difference criteria for bridges in Korea.
Keywords
Temperature Difference; Asphalt Thickness of Concrete Deck; Steel Box Girder Specimen; Temperature Measurement; Temperature Gradient Model; Euro Code;
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Times Cited By KSCI : 3  (Citation Analysis)
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