Accession Number : ADA302886

Title :   Parametric Evaluation of Construction and Analysis Procedures Using Nonlinear, Incremental Structural Analysis.

Descriptive Note : Final rept.,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS INFORMATION TECHNOLOG Y LAB

Personal Author(s) : Fehl, Barry D. ; Truman, Kevin Z. ; Warmka, Gary

PDF Url : ADA302886

Report Date : JUN 1995

Pagination or Media Count : 211

Abstract : A series of parametric studies were conducted as part of the development of Engineering Technical Letter 1110-2-365, Nonlinear, Incremental Structural Analysis of Massive Concrete Structures, 31 August 1994. Parameters studied were construction start dates, intervals of lift placements, analysis procedure, and the ambient and heat of hydration effects. The studies were performed on a miter gate monolith from the Melvin Price Lock and Dam Project located on the Mississippi River. The analyses of construction start dates compared construction starts in the winter, spring, summer, and fall to determine the most critical starting time. The study showed that spring and fall starts may produce the critical case and that insulation in the winter is absolutely critical. The analysis procedures studied were plane stress, plane strain, and generalized plane straln, and the results showed little with respect to determining which procedure should be used. Further studies comparing to three-dimensional analyses are necessary. Intervals of lift placements were varied between 5, 10, and 15 days. These lift placements showed that for long slabs, a longer interval rnay be the most critical case, but this may not hold true for wall sections. Results of comparing the ambient and heat of hydration effects show that the ambient is the main driver for thermal induced stresses but that the heat of hydration can have a significant effect on the resulting stresses. (MM)

Descriptors :   *DAMS, *LOCKS(WATERWAYS), HEAT TRANSFER, PARAMETRIC ANALYSIS, AGING(MATERIALS), STRESS ANALYSIS, FINITE ELEMENT ANALYSIS, STRUCTURAL ANALYSIS, CRACKING(FRACTURING), CONCRETE, STRAIN(MECHANICS), SOILS, CONSTRUCTION, THERMAL EXPANSION, THERMAL CONDUCTIVITY, NONLINEAR ANALYSIS, MISSISSIPPI RIVER, THERMAL STRESSES, SOIL STRUCTURE INTERACTIONS, HYDRATION.

Subject Categories : Civil Engineering
      Construction Equipment, Materials & Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE