Modeling and Fragility Analysis of Non-Ductile Reinforced Concrete Buildings in Low-to-Moderate Seismic Zones
Publication: Structures Congress 2012
Abstract
Reinforced concrete buildings in low-to-moderate seismic zones are often designed only for gravity loads in accordance with the non-seismic detailing provisions. Deficient detailing of columns and beam-column joints can lead to unpredictable brittle failures even under moderate earthquakes. Therefore, a reliable estimate of structural response is required for the seismic evaluation of these structures. For this purpose, analytical models for both interior and exterior slab-beam-column subassemblages and for a 1/3 scale model frame were implemented into the nonlinear finite element platform OpenSees. Comparison between the analytical results and experimental data available in the literature is carried out using nonlinear pushover analyses and nonlinear time history analysis for the subassemblages and the model frame, respectively. Furthermore, the seismic fragility assessment of reinforced concrete buildings is performed on a set of non-ductile frames using nonlinear time history analyses. The fragility curves, which are developed for various damage states for the maximum interstory drift ratio are characterized in terms of peak ground acceleration and spectral acceleration using a suite of ground motions representative of the seismic hazard in the region.
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© 2012 American Society of Civil Engineers.
History
Published online: Jul 11, 2012
ASCE Technical Topics:
- Building design
- Concrete
- Concrete structures
- Continuum mechanics
- Design (by type)
- Ductility
- Dynamic loads
- Dynamics (solid mechanics)
- Earthquake engineering
- Engineering fundamentals
- Engineering materials (by type)
- Engineering mechanics
- Geotechnical engineering
- Material mechanics
- Material properties
- Materials engineering
- Mechanical properties
- Nonlinear analysis
- Reinforced concrete
- Seismic effects
- Seismic loads
- Seismic tests
- Solid mechanics
- Structural analysis
- Structural dynamics
- Structural engineering
- Structures (by type)
- Tests (by type)
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