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|Title:||Case histories of mass concrete thermal studies|
|Authors:||United States. Army. Corps of Engineers. Walla Walla District.|
United States. Army. Corps of Engineers. Sacramento District.
Tatro, Stephen Brent.
Bombich, Anthony A.
Hess, John R.
|Keywords:||Adiabatic temperature rise|
American River Dam
Cache Creek Detention Basin Weir
Finite element method
Lock and Dam No. 2, 3, 4
Roller compacted concrete
Tensile strain capacity
|Publisher:||Structures Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||ERDC/SL TR ; 00-8.|
Abstract: This report presents examples of mass concrete thermal studies for several U.S. Army Corps of Engineers projects. The examples are preceded by a brief explanation of the components of each study and other relevant information. The example thermal studies were generally performed as outlined in ETL 1110-2-542, Thermal Studies of Mass Concrete Structures. This ETL is no longer in print, but the major elements of the document are now contained in EM 1110-2-2000, Standard Practice for Concrete for Civil Works Structures. This report serves as a companion document to the EM. More detailed explanation of the general provisions for performing mass concrete thermal studies are contained in the EM 1110-2-2000. The performance of thermal analyses can be grouped by level of complexity. This report provides explanations and examples of Levels 1 and 2 thermal studies. The most complex, Level 3, is not illustrated in this report. The procedure for a Level 1 analysis is presented along with an example of the thermal study for Cache Creek Detention Basin. The procedure for a Level 2 analysis is also presented. The preliminary thermal analysis for the American River Dam provides an example of a one-dimensional Level 2 thermal analysis, including an example using simple finite element (FE), one-dimensional strip models. The thermal analysis for Locks and Dams 2, 3, and 4 on the Monongahela River provides an example of a Level 2 analysis using more complex two-dimensional FE methodology. Appendix A presents the current practice for determination of concrete tensile strain capacity for use in cracking analysis. The analyses illustrated by the examples in this report are recommended to evaluate thermal behavior of mass concrete structures. The analyses are useful in establishing the type and degree of control measures necessary to control thermal cracking.
|Rights:||Approved for public release; distribution is unlimited.|
|Appears in Collections:||Technical Report|