Measurements and simulation of temperature in a portal frame bridge
(2019) 40th IABSE Symposium in Nantes 2018: Tomorrow's Megastructures p.9-24- Abstract
Since thermal loads can cause cracking, they are important to consider in bridge design. In order to evaluate and develop thermal load cases based on real simulations, models for simulating temperatures can be used. In this paper, a model for thermal simulation is used to simulate temperature in a portal frame bridge outside Lund, Sweden. The results are compared with temperature measurements in 13 locations in the same bridge, which were made during a 12-month period. The results show that although many important material parameters were unknown, the model could recreate both daily and seasonal temperature variations, although it tended to render temperatures about 1°C lower than the measurements, at least during summer. The model can... (More)
Since thermal loads can cause cracking, they are important to consider in bridge design. In order to evaluate and develop thermal load cases based on real simulations, models for simulating temperatures can be used. In this paper, a model for thermal simulation is used to simulate temperature in a portal frame bridge outside Lund, Sweden. The results are compared with temperature measurements in 13 locations in the same bridge, which were made during a 12-month period. The results show that although many important material parameters were unknown, the model could recreate both daily and seasonal temperature variations, although it tended to render temperatures about 1°C lower than the measurements, at least during summer. The model can be used in future work in determining thermal load values for the specific bridge type, assuming the model uncertainty is considered by e.g. adding 1°C to calculated load values.
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- author
- Gottsäter, Erik LU ; Ivanov, Oskar Larsson LU ; Molnár, Miklós LU and Plos, Mario
- organization
- publishing date
- 2019
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Concrete, Measurement, Portal frame bridge, Simulation, Temperature
- host publication
- IABSE Symposium, Nantes 2018 : Tomorrow's Megastructures - Tomorrow's Megastructures
- pages
- 9 - 24
- publisher
- International Association for Bridge and Structural Engineering
- conference name
- 40th IABSE Symposium in Nantes 2018: Tomorrow's Megastructures
- conference location
- Nantes, France
- conference dates
- 2018-09-19 - 2018-09-21
- external identifiers
-
- scopus:85059389206
- ISBN
- 9783857481611
- project
- Modeling and evaluation of restraint forces in concrete bridges
- language
- English
- LU publication?
- yes
- id
- 44060c65-1841-43c7-9094-a5e9c174440f
- date added to LUP
- 2019-01-11 09:25:16
- date last changed
- 2022-01-31 08:26:38
@inproceedings{44060c65-1841-43c7-9094-a5e9c174440f, abstract = {{<p>Since thermal loads can cause cracking, they are important to consider in bridge design. In order to evaluate and develop thermal load cases based on real simulations, models for simulating temperatures can be used. In this paper, a model for thermal simulation is used to simulate temperature in a portal frame bridge outside Lund, Sweden. The results are compared with temperature measurements in 13 locations in the same bridge, which were made during a 12-month period. The results show that although many important material parameters were unknown, the model could recreate both daily and seasonal temperature variations, although it tended to render temperatures about 1°C lower than the measurements, at least during summer. The model can be used in future work in determining thermal load values for the specific bridge type, assuming the model uncertainty is considered by e.g. adding 1°C to calculated load values.</p>}}, author = {{Gottsäter, Erik and Ivanov, Oskar Larsson and Molnár, Miklós and Plos, Mario}}, booktitle = {{IABSE Symposium, Nantes 2018 : Tomorrow's Megastructures}}, isbn = {{9783857481611}}, keywords = {{Concrete; Measurement; Portal frame bridge; Simulation; Temperature}}, language = {{eng}}, pages = {{9--24}}, publisher = {{International Association for Bridge and Structural Engineering}}, title = {{Measurements and simulation of temperature in a portal frame bridge}}, year = {{2019}}, }