Simulation of Thermal Load Distribution in Portal Frame Bridges
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Bibliographic Details
| Author(s): |
Erik Gottsäter
(Lund University, Lund, Sweden)
Oskar Larsson (Lund University, Lund, Sweden) Miklós Molnár (Lund University, Lund, Sweden) Roberto Crocetti (Lund University, Lund, Sweden) Mario Plos (Chalmers University, Gothenburg, Sweden) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016 | ||||
| Published in: | IABSE Congress Stockholm, 2016 | ||||
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| Page(s): | 9-16 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2016 | ||||
| DOI: | 10.2749/stockholm.2016.0009 | ||||
| Abstract: |
Uneven exposure to e.g. solar radiation can cause temperature differences between various structural parts of a bridge, which leads to tensile stresses if the parts cannot move freely. In this study, thermal simulations and stress calculations on a model of a portal frame bridge are performed with the aim of evaluating the temperature difference between the bridge parts. It is shown that the temperature difference between parts which is proposed by Eurocode 1 is overestimated, thus the resulting stress distribution being unrealistic. Using the design method proposed by Eurocode 1 is therefore likely to exaggerate the required reinforcement in crack width limit design, which in turn would lead to unnecessary costs and environmental impacts. Further studies are needed in order to determine proper thermal load values and temperature distributions. |
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| Keywords: |
Eurocode portal frame bridge thermal load restraint stresses thermal simulations
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