Accession Number : AD0821248

Title :   TIME-DEPENDENT BEHAVIOR OF REINFORCED CONCRETE STRUCTURES.

Descriptive Note : Interim technical rept.,

Corporate Author : CALIFORNIA UNIV BERKELEY STRUCTURAL ENGINEERING LAB

Personal Author(s) : Selna, L. G.

Report Date : AUG 1967

Pagination or Media Count : 175

Abstract : A mathematical model is developed for the study of time-dependent behavior of reinforced concrete frame structures. The model is formulated to account for creep, cracking, and drying shrinkage in the concrete. The output from the model includes forces, stresses, strains, and displacements in the structure. The model is formulated on the basis of idealizations in time and geometry. The idealization of incrementing the time is an expedient for integration of the hereditary strain-stress law for concrete. A linear law in functional form provides an accurate description of concrete strain-stress behavior within design stress ranges. The geometric idealizations are made so that the stiffness of the structures may be found. The structural members are divided into length increments and each length increment is divided into depth increments so that the bending and axial stiffness of a reinforced concrete member may be evaluated. (Author)

Descriptors :   (*REINFORCED CONCRETE, MATHEMATICAL MODELS), CRACKS, CRACK PROPAGATION, CREEP, SHRINKAGE, DRYING, STRESSES, STRAIN(MECHANICS), LOAD DISTRIBUTION, PRISMATIC BODIES, BEAMS(STRUCTURAL), STRUCTURES, EXPERIMENTAL DATA.

Subject Categories : Laminates and Composite Materials
      Numerical Mathematics

Distribution Statement : APPROVED FOR PUBLIC RELEASE