Accession Number : AD0837612

Title :   INVESTIGATION OF THE INELASTIC BEHAVIOR OF REINFORCED CONCRETE RING SECTIONS.

Descriptive Note : Technical rept. Jul 67-May 68,

Corporate Author : MECHANICS RESEARCH INC EL SEGUNDO CA*

Personal Author(s) : Abildskov, Dale P. ; Geminder, Robert

Report Date : JUL 1968

Pagination or Media Count : 131

Abstract : Eight reinforced concrete ring specimens constructed of intermediate grade reinforcing steel and average strength concrete were uniformly loaded by 36 hydraulic rams placed around the rings at 10 degree increments. All rings were tested to failure. The failure modes were compression in the concrete and radial tension. The specimens that failed in compression all withstood higher loads than predicted by theoretical techniques developed in AFWL-TR-65-145. Stirrups are not required for shear; however, they are required when the average radial tensile stress exceeds 50 psi. Friction effects in the hydraulic rams and pressurization system were found to be significant, causing the loading distribution to be nearer to a uniform distribution than desired. This was one of the reasons why some of the test specimens failed at higher loads than their respective theoretical values. (Author)

Descriptors :   (*REINFORCED CONCRETE, MECHANICAL PROPERTIES), LOADS(FORCES), STIFFENED CYLINDERS, COMPOSITE MATERIALS, FAILURE(MECHANICS), ELASTIC PROPERTIES, CRACK PROPAGATION, COMPRESSIVE PROPERTIES, TENSILE PROPERTIES, RINGS, STRESSES, STRAIN(MECHANICS).

Subject Categories : Laminates and Composite Materials
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE