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|Title:||Finite element modeling of cooling coil effects in mass concrete systems|
|Authors:||Washington University (Saint Louis, Mo.)|
Computer-Aided Structural Engineering Project (U.S.)
Strigel, Roberta M.
Nonlinear incremental structural analysis
Finite element modeling
Finite element model
|Publisher:||Information Technology Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||ERDC/ITL TR 01-3.|
Abstract: Over the past decade, the U.S. Army Corps of Engineers has developed and implemented the use of NISA (nonlinear, incremental structural analysis) procedures to predict the effect of thermal loads due to the heat of hydration of cement in massive concrete structures during construction. To date, the commercial program ABAQUS has been used to perform a majority of the NISA s due to its versatility. Recently, a need to develop a modeling procedure for NISA s that can account for cooling coils placed within massive concrete structures has arisen. Often the heat generation within these structures cannot be controlled by changing the concrete constituents, reducing lift heights/widths, or modifying the construction procedures. Cooling coils placed within the concrete are needed to act as a radiator, constantly carrying heat from the source, the central region of the concrete, in order to reduce the thermal gradient within the material. A realistic method of modeling the effects of cooling coils in massive concrete structures is presented for both two-dimensional and three-dimensional analyses. The ability to capture the thermal changes in the concrete and cooling coils as they occur over time is the primary objective of the modeling technique. Previous to the modeling technique presented here, there was no acceptable procedure for modeling cooling coils and their effects within massive concrete structures using ABAQUS.
|Rights:||Approved for public release; distribution is unlimited.|
|Appears in Collections:||Technical Report|