Curvature ductility of reinforced and prestressed concrete columns

Thesis/Dissertation · Sat Dec 31 23:00:00 EST 1983

OSTI ID:5669169

Suprenant, B A

Engineers are concerned with the survival of reinforced and prestressed concrete columns during earthquakes. The prediction of column survival can be deduced from moment-curvature curves of the column section. An analytical approach is incorporated into a computer model. The computer program is based on assumed stress-strain relations for confined and unconfined concrete, nonprestressed and prestressing steel. The results of studies on reinforced and prestressed concrete columns indicate that reinforced concrete columns may be designed to resist earthquakes, while prestressed concrete columns may not. The initial reduction in moment capacity, after concrete cover spalling, of a prestressed concrete column could be as much as 50%. Analyses indicate that the bond between concrete and prestressing strand after concrete cover spalling is not critical.

• OSTI ID: 5669169
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603 -- Materials-- Properties
42 ENGINEERING
420500* -- Engineering-- Materials Testing
ANALYTICAL SOLUTION
BUILDING MATERIALS
CONCRETES
DUCTILITY
EARTHQUAKES
MATERIALS
MECHANICAL PROPERTIES
MECHANICAL STRUCTURES
PRESTRESSED CONCRETE
REINFORCED CONCRETE
REINFORCED MATERIALS
SEISMIC EFFECTS
SEISMIC EVENTS
SHAPE
TENSILE PROPERTIES