Effects of shear stirrup details on ultimate capacity and tensile-membrane behavior of reinforced concrete slabs. Final report

Technical Report · Thu Aug 01 00:00:00 EDT 1985

OSTI ID:6113871

Woodson, S C

At the time this study was initiated, civil defense planning in the United States called for the evacuation of nonessential personnel to safe host areas when a nuclear attack is probable, requiring the construction of blasts shelters to protect the keyworkers remaining in the risk areas. The placement of shear stirrups in the one-way reinforced concrete roof slabs of the shelters will contribute significantly to project costs. Ten one-way reinforced concrete slabs were statically and uniformly loaded with water pressure, primarily to investigate the effect of stirrups and stirrup details on the load-response behavior of the slabs. The slabs had clear spans of 24.0 inches, span to effective depth ratios of 12.4, tensile reinforcement of 0.75%, and concrete strengths of approximately 5,000 psi. The test series significantly increased the data base for uniformly loaded one-way slabs. Support rotations between 13.1 and 20.6 degrees were observed. A more ductile behavior was observed in slabs with construction details, implying better concrete confinement due to more confining steel (i.e., closely spaced stirrups, double-leg stirrups, and closely spaced principal reinforcing bars). The parameters investigated did not appear to have a significant effect on ultimate load capacity.

• Research Organization: Army Engineer Waterways Experiment Station, Vicksburg, MS (USA). Structures Lab.
• OSTI ID: 6113871
• Report Number(s): AD-A-161222/5/XAB; WES/MLP/SL-85-4
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
CIVIL DEFENSE
SHELTERS
REINFORCED CONCRETE
TENSILE PROPERTIES
BEHAVIOR
CONSTRUCTION
DUCTILITY
EVACUATION
MEMBRANES
RODS
ROOFS
ROTATION
SLABS
WATER
BUILDING MATERIALS
CONCRETES
HYDROGEN COMPOUNDS
MATERIALS
MECHANICAL PROPERTIES
MOTION
NATIONAL DEFENSE
OXYGEN COMPOUNDS
REINFORCED MATERIALS
450202* - Explosions & Explosives- Nuclear- Weaponry- (-1989)
990500 - Civilian Defense- (-1987)