Title:
Seismic Behavior and Ductility of Squat Reinforced Concrete Shear Walls with Nonseismic Detailing
Author(s):
J. S. Kuang and Y. B. Ho
Publication:
Structural Journal
Volume:
105
Issue:
2
Appears on pages(s):
225-231
Keywords:
ductility; reinforced concrete; seismic behavior; squat shear walls.
DOI:
10.14359/19738
Date:
3/1/2008
Abstract:
Large-scale nonseismically detailed, squat reinforced concrete shear walls with aspect ratios of 1.0 and 1.5, as practiced in low to moderate probability of seismic occurrence regions, are tested under reversed cyclic loading. The seismic behavior and displacement ductility of the shear walls are investigated. Emphasis of the study is placed on the inherent displacement ductility of the walls with nonseismic standard and improved reinforcement details. Experimental results show that the inherent displacement ductility factor of 2.5 to 3 is commonly achieved with the current nonseismic design practice and that of 4.5 to 5 with minor modifications in the reinforcement detailing techniques. It has been shown that an ordinary squat shear wall with nonseismic design and detailing may not possess sufficient ductility to respond adequately to an unexpected moderate earthquake. The proposed reinforcement details, which include minor modifications to the detailing techniques of currently practiced nonseismic designs, can effectively lead to a reasonable improvement of ductile response behavior of the squat shear walls.