Title:
Behavior of Repaired Cyclically Loaded Shearwalls
Author(s):
Frank J. Vecchio, Omar A. Haro de la Pena, Filippo Bucci, and Daniel Palermo
Publication:
Structural Journal
Volume:
99
Issue:
3
Appears on pages(s):
327-334
Keywords:
concrete; repair; shearwalls; test.
DOI:
10.14359/11916
Date:
5/1/2002
Abstract:
Two large-scale, wide-flanged shear walls were subjected to reversed cyclic displacements, resulting in the web elements sustaining heavy damage. The walls were repaired by removing and replacing the damaged concrete, and then were reloaded. Test results indicate that there can be a near full restoration of the walls’ strength, stiffness, and energy dissipation characteristics. However, it is shown that the repair scheme, strength of the repair concrete, and residual damage in the unrepaired zones can have a significant influence on subsequent behavior, particularly in altering the mode of failure. It is also shown that properly accounting for previous loading, residual damage, and repair sequence is critical to obtaining accurate predicted responses from analytical procedures. The data from this test series, augmenting other data available in the literature, will be useful in calibrating improved analytical methods as they are developed.