Abstract
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.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1047-1064 |
| Number of pages | 18 |
| Journal | Journal of Earthquake Engineering |
| Volume | 13 |
| Issue number | 7 |
| DOIs | |
| State | Published - Sep 2009 |
Bibliographical note
Funding Information:This work was supported in part by Precast/Prestressed Concrete Institute (PCI) through a Daniel P. Jenny Fellowship and by the Department of Civil Engineering at the University of Minnesota through a Sommerfeld Fellowship. The authors wish to thank Professor Yahya Kurama from the University of Notre Dame for providing the modified DRAIN-2DX code and his advice on its use.
Keywords
- Permanent Drift
- Post-Tensioning
- Precast Concrete
- Seismic Loading
- Self-Centering
- Shear Walls
- Unbonded Tendons