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Simulation of Thermal Load Distribution in Portal Frame Bridges

Gottsäter, Erik LU ; Larsson, Oskar LU ; Plos, Mario; Molnár, Miklós LU and Crocetti, Roberto LU (2016) 19th IABSE Congress Stockholm 2016 In IABSE Congress Stockholm, 2016: Challenges in Design and Construction of an Innovative and Sustainable Built Environment2016 p.9-16
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.... (More)
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. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
IABSE Congress Stockholm, 2016: Challenges in Design and Construction of an Innovative and Sustainable Built Environment2016
pages
9 - 16
publisher
IABSE, International Association for Bridge and Structural Engineering
conference name
19th IABSE Congress Stockholm 2016
external identifiers
  • scopus:85019003657
ISBN
978-385748144-4
language
English
LU publication?
yes
id
666d1474-5b24-4fad-b5c6-f580995327b5
date added to LUP
2017-04-21 15:30:24
date last changed
2017-11-14 09:52:58
@inproceedings{666d1474-5b24-4fad-b5c6-f580995327b5,
  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.},
  author       = {Gottsäter, Erik and Larsson, Oskar and Plos, Mario and Molnár, Miklós and Crocetti, Roberto},
  booktitle    = {IABSE Congress Stockholm, 2016: Challenges in Design and Construction of an Innovative and Sustainable Built Environment2016},
  isbn         = {978-385748144-4},
  language     = {eng},
  month        = {09},
  pages        = {9--16},
  publisher    = {IABSE, International Association for Bridge and Structural Engineering},
  title        = {Simulation of Thermal Load Distribution in Portal Frame Bridges},
  year         = {2016},
}