A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Validation of Stresses Caused by Thermal Gradients in Segmental Concrete Construction
Segmental bridges experience not only uniform temperature changes, but also nonlinear distributions of temperature (thermal gradient) through the depth of the superstructure. Nonlinear temperature distributions lead to internal self-equilibrating thermal stresses that cannot be relieved through adjustment of support conditions. The report presents the results of a series of tests and analytical work aimed at quantifying the self-equilibrating thermal stresses caused by American Association of State Highway and Transportation Officials (AASHTO) design nonlinear positive (deck warmer than web) and negative (deck cooler than web) thermal gradients in segmental concrete bridges. It covers component testing of prestressed concrete specimens and a final test to cracking on the beam used for the research reported. The component testing consisted of prestressed concrete specimens constructed to replicate the top 8 in. of a segment concrete bridge deck where the self-equilibrating stresses from the negative thermal gradient causes net tension.
Validation of Stresses Caused by Thermal Gradients in Segmental Concrete Construction
Segmental bridges experience not only uniform temperature changes, but also nonlinear distributions of temperature (thermal gradient) through the depth of the superstructure. Nonlinear temperature distributions lead to internal self-equilibrating thermal stresses that cannot be relieved through adjustment of support conditions. The report presents the results of a series of tests and analytical work aimed at quantifying the self-equilibrating thermal stresses caused by American Association of State Highway and Transportation Officials (AASHTO) design nonlinear positive (deck warmer than web) and negative (deck cooler than web) thermal gradients in segmental concrete bridges. It covers component testing of prestressed concrete specimens and a final test to cracking on the beam used for the research reported. The component testing consisted of prestressed concrete specimens constructed to replicate the top 8 in. of a segment concrete bridge deck where the self-equilibrating stresses from the negative thermal gradient causes net tension.
Validation of Stresses Caused by Thermal Gradients in Segmental Concrete Construction
F. Mahama (author) / D. C. Walter (author) / N. Currier (author) / H. R. Hamilton (author) / G. R. Consolazio (author)
2009
269 pages
Report
No indication
English
Measurements of Thermal Gradients and their Effects on Segmental Concrete Bridge
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