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Transverse thermal stresses in concrete box cross-sections due to climatic exposure

Larsson, Oskar LU and Thelandersson, Sven LU (2012) In Structural Concrete 13(4). p.227-235
Abstract
Spatial and temporal temperature variations in a concrete structure due to variations in the surrounding climate will produce movements which, if restrained, may induce stresses in the structure. To get a better understanding of transverse thermal stresses due to climatic effects in concrete box cross-sections, the FE simulations in this study have been performed using extensive climatic input data directly or by using simplified methods to simulate the temperature and resulting stress fields in a section of the hollow concrete arch of the New Svinesund Bridge. Studies of other cross-sections with varying depth, width and wall thicknesses have also been performed to investigate the geometrical influence. The results reveal an... (More)
Spatial and temporal temperature variations in a concrete structure due to variations in the surrounding climate will produce movements which, if restrained, may induce stresses in the structure. To get a better understanding of transverse thermal stresses due to climatic effects in concrete box cross-sections, the FE simulations in this study have been performed using extensive climatic input data directly or by using simplified methods to simulate the temperature and resulting stress fields in a section of the hollow concrete arch of the New Svinesund Bridge. Studies of other cross-sections with varying depth, width and wall thicknesses have also been performed to investigate the geometrical influence. The results reveal an overestimation of the maximum thermal tensile stress when using a linear temperature differential approach compared with the direct use of climate data that includes the non-linear part of the temperature distribution. The effect of depth, width and orientation is negligible compared with variations in thickness between slabs and walls. For box sections with slabs/walls having different thicknesses, the transverse thermal stresses will be significantly larger in the thinner members, irrespective of the actual orientation and position of the member. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
KSTRConcrete, box cross-section, thermal stress, finite element method, thermal factors, climate data
in
Structural Concrete
volume
13
issue
4
pages
227 - 235
publisher
Thomas Telford
external identifiers
  • wos:000312134100004
  • scopus:84864334531
ISSN
1751-7648
DOI
10.1002/suco.201200010
language
English
LU publication?
yes
id
0ddaad06-12bf-442d-9308-108f57ecfeb1 (old id 3304617)
date added to LUP
2013-01-04 11:19:31
date last changed
2017-05-28 03:04:11
@article{0ddaad06-12bf-442d-9308-108f57ecfeb1,
  abstract     = {Spatial and temporal temperature variations in a concrete structure due to variations in the surrounding climate will produce movements which, if restrained, may induce stresses in the structure. To get a better understanding of transverse thermal stresses due to climatic effects in concrete box cross-sections, the FE simulations in this study have been performed using extensive climatic input data directly or by using simplified methods to simulate the temperature and resulting stress fields in a section of the hollow concrete arch of the New Svinesund Bridge. Studies of other cross-sections with varying depth, width and wall thicknesses have also been performed to investigate the geometrical influence. The results reveal an overestimation of the maximum thermal tensile stress when using a linear temperature differential approach compared with the direct use of climate data that includes the non-linear part of the temperature distribution. The effect of depth, width and orientation is negligible compared with variations in thickness between slabs and walls. For box sections with slabs/walls having different thicknesses, the transverse thermal stresses will be significantly larger in the thinner members, irrespective of the actual orientation and position of the member.},
  author       = {Larsson, Oskar and Thelandersson, Sven},
  issn         = {1751-7648},
  keyword      = {KSTRConcrete,box cross-section,thermal stress,finite element method,thermal factors,climate data},
  language     = {eng},
  number       = {4},
  pages        = {227--235},
  publisher    = {Thomas Telford},
  series       = {Structural Concrete},
  title        = {Transverse thermal stresses in concrete box cross-sections due to climatic exposure},
  url          = {http://dx.doi.org/10.1002/suco.201200010},
  volume       = {13},
  year         = {2012},
}