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Estimation of Extreme Climatic Thermal Actions in Concrete Structures

 Estimation of Extreme Climatic Thermal Actions in Concrete Structures
Author(s):
Presented at IABSE Symposium: Large Structures and Infrastructures for Environmentally Constrained and Urbanised Areas, Venice, Italy, 22-24 September 2010, published in , pp. 252-253
DOI: 10.2749/222137810796024448
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The temperature distribution in concrete structures varies due to annual and daily climate variations. Solar radiation, air temperature, wind speed and long-wave radiation affect the temperature in...
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Bibliographic Details

Author(s):
Medium: conference paper
Language(s): English
Conference: IABSE Symposium: Large Structures and Infrastructures for Environmentally Constrained and Urbanised Areas, Venice, Italy, 22-24 September 2010
Published in:
Page(s): 252-253 Total no. of pages: 8
Page(s): 252-253
Total no. of pages: 8
Year: 2010
DOI: 10.2749/222137810796024448
Abstract:

The temperature distribution in concrete structures varies due to annual and daily climate variations. Solar radiation, air temperature, wind speed and long-wave radiation affect the temperature in the structure and may cause longitudinal and transversal movements. If these movements are restrained, stresses and strains can be induced which may contribute to cracking. To be able to predict the

long-term effects and extreme thermal actions a finite element model has been developed. The model is used with global meteorological data to predict annual maxima of temperature gradients. The results show that the values in the Eurocode concerning the investigated region are underestimated for positive linear gradients. Values with a return period of 5 years are above the design values from Eurocode with a 50 year return period. The type of paving used has a significant effect on the results

Keywords:
concrete solar radiation climate FE-model thermal actions