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|Nonlinear, incremental structural analysis of Zintel Canyon Dam : Appendices A and B
|United States. Army. Corps of Engineers. Walla Walla District.
Hollenbeck, Robert E.
Tatro, Stephen Brent.
|Adiabatic temperature rise
Finite element method
Joints, mass concrete
Roller compacted concrete
Tensile strain capacity
Zintel Canyon Dam
|Structures Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Abstract: This paper presents the time-history thermal analysis of Zintel Canyon Dam, a structure of approximately 70,000 cubic yards of roller compacted concrete (RCC). This study was initiated to demonstrate the implementation of the superseded ETL 1110-2-324, “Special Design Provisions for Massive Concrete Structures,” as applied to RCC structures. The results of the study were published in ETL 1110-2-536, dated December 31, 1994, which should be used as guidance when conducting analyses of mass RCC structures. Since construction of the dam has been completed, actual data for ambient conditions, placing conditions, and available material properties were used in the analysis. Time-dependent material properties were incorporated into the analysis using specially developed user subroutines for ABAQUS, a general purpose finite element code. The analysis showed that several locations in the structure exhibit high stress levels capable of generating thermal cracks. Initiation of cracks in the RCC, parallel to the axis of the structure, was evident in the results; however, stress levels were not of a magnitude to propagate these cracks to the point of concern. In addition, stress results indicated that transverse cracking of the structure may occur at up to three locations. The performance predicted by the analysis was very similar to the thermal performance predicted by earlier manual computations.
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