Journal
JOURNAL OF EARTHQUAKE ENGINEERING
Volume 13, Issue 7, Pages 1047-1064Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/13632460902859136
Keywords
Permanent Drift; Post-Tensioning; Precast Concrete; Seismic Loading; Self-Centering; Shear Walls; Unbonded Tendons
Funding
- Precast/Prestressed Concrete Institute (PCI)
- University of Minnesota
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Self-centering ability of unbonded post-tensioned precast concrete shear walls has been attributed to the presence of post-tensioning force. However, the experimental results presented in this paper indicate that the post-tensioning force may completely die out during cyclic loading while the walls are able to retain their superior self-centering characteristic. Moreover, the analytical study presented in this article indicates that with proper configuration of end-anchorages for post-tensioned tendons, self-centering of post-tensioned walls can be achieved even when the post-tensioning force vanishes. This study also investigates the effects of tendon layout, tendon end-anchorage configuration, and external vertical load on the self-centering ability of unbonded precast concrete shear walls subjected to earthquake loading.
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