Steel Reinforced Polymers Enhance Strength and Ductility of Beam-Column Joints under Seismic Loads
Publication: Structures Congress 2008: Crossing Borders
Abstract
The results of an experimental investigation into the application of steel-reinforced polymer (SRP) composites for strengthening shear-deficient exterior beam-column joints in reinforced concrete frames subjected to seismic loads are presented. Four frac12;-scale beam-column joint specimens were tested under a quasi-static cyclic load applied at the beam tip to simulate high levels of inelastic deformations similar to those experienced during a severe earthquake. The first specimen was tested without strengthening and used as control specimen for comparison purposes. The remaining three specimens were strengthened before testing using SRP sheets bonded externally to the joint region in three different arrangements. The SRP sheets selected for this investigation consist of unidirectional twisted high strength steel cords impregnated with polymeric resin. The strengthening technique proved to be efficient in upgrading the capacity and enhancing the ductility and energy dissipation ability of shear-deficient beam-column joints.
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Information
Published In
Structures Congress 2008: Crossing Borders
Pages: 1 - 10
Copyright
© 2008 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Beam columns
- Columns
- Concrete
- Continuum mechanics
- Dynamic loads
- Dynamics (solid mechanics)
- Engineering materials (by type)
- Engineering mechanics
- Frames
- Joints
- Materials engineering
- Polymer
- Reinforced concrete
- Seismic loads
- Solid mechanics
- Steel frames
- Structural behavior
- Structural dynamics
- Structural engineering
- Structural members
- Structural strength
- Structural systems
- Synthetic materials
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