Seismic Behavior of Concrete Columns Confined with Steel and Fiber-Reinforced Polymers
Seismic Behavior of Concrete Columns Confined with Steel and Fiber-Reinforced PolymersResults from an experimental program are presented in which 12356 mm diameter and 1473 mm long columns were tested underconstant axial load and reversed cyclic lateral load that simulatedforces from an earthquake. Each specimen consisted of a columncast integrally with a 510 x 760 x 810 mm stub that represented abeam-column joint area or a footing. The test specimens weredivided into three groups. The first group consisted of four columnsthat were conventionally reinforced with longitudinal and spiralsteel reinforcement. The second group contained six reinforcedconcrete columns that were strengthened with carbon fiber-reinforcedpolymers (CFRP) or glass fiber-reinforced polymers(GFRP)before testing. The…
Hybrid FRP–concrete–steel tubular columns: Concept and behavior
Hybrid FRP–concrete–steel tubular columns: Concept and behaviorAbstractHybrid FRP–concrete–steel double-skin tubular columns are a new form of hybrid columns recently proposed by the first author. Thecolumn consists of an outer tube made of fiber reinforced polymer (FRP) and an inner tube made of steel, with the space between filledwith concrete. In this new hybrid column, the three constituent materials are optimally combined to achieve several advantages not availablewith existing columns. In this paper, the rationale for the new column form together with its expected advantages is first explained.A series of axial compression tests on stub columns are then presented to demonstrate some of the expected advantages. These test resultsconfirm that the…
Reinforced Concrete Beams, Columns and Frames
Charles Casandjian, Noel Challamel, Christophe Lanos, Jostein Hellesland(auth.)…
