Title:
Post-Tensioned Shotcrete Shearwalls
Author(s):
Leo Panian, Marc Steyer, and Steven Tipping
Publication:
Concrete International
Volume:
29
Issue:
10
Appears on pages(s):
39-45
Keywords:
lateral force resisting system; post-tensioning; rehabilitation; seismic; shearwall; shotcrete
DOI:
Date:
10/1/2007
Abstract:
By combining the advantages of conventional reinforced concrete construction with unbonded post-tensioning, a hybrid is created that provides the opportunity to significantly and cost-effectively improve the seismic performance of structural wall systems. The implementation of this hybrid wall system is illustrated using a recently completed seismic retrofit of an existing six-story non-ductile concrete building in Berkeley, CA. Various restrictions during the retrofit led to the use of shotcrete to construct the walls, micropile foundations, and carbon fiber collector elements.