Using Nonlinear-Elastic Stiffness at Small Displacement to Identify Damage in a Full-Scale Reinforced Concrete Building
Publication: Journal of Performance of Constructed Facilities
Volume 38, Issue 3
Abstract
In this paper, sensitivity of small-amplitude stiffness of a full-scale, three-story reinforced concrete flat-plate structure is investigated to assess development of damage during cyclic lateral load with up to 3.0% lateral drift ratio. The small-amplitude displacement tests were made at a maximum 0.03% drift ratio between the cycles of lateral loads causing mean roof drifts of 1.5% and 3.0% drift ratios. Results of the small-amplitude experimental program suggest that the building behaves as a nonlinear-elastic system at small displacement (i.e., drift ratio below 0.03%), and the small-amplitude stiffness compared at identical displacements can indicate damage from previous large-displacement cycles. It is shown that there is a robust and consistent relationship between stiffness and varying natural frequency measured at small displacements. As demonstrated, small-amplitude vibration properties may be an effective indicator of damage as long as a nonlinear-elastic model is used instead of a traditional linear model.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
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Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 38 • Issue 3 • June 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Feb 22, 2023
Accepted: Jan 5, 2024
Published online: Mar 26, 2024
Published in print: Jun 1, 2024
Discussion open until: Aug 26, 2024
ASCE Technical Topics:
- Concrete
- Continuum mechanics
- Damage (material)
- Design (by type)
- Displacement (mechanics)
- Drift (structural)
- Dynamic loads
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering materials (by type)
- Engineering mechanics
- Lateral loads
- Materials characterization
- Materials engineering
- Reinforced concrete
- Solid mechanics
- Stiffening
- Structural behavior
- Structural design
- Structural dynamics
- Structural engineering
- Structural mechanics
- Structure reinforcement
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