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Cyclic loading test of T-shaped mid-rise shear wall
THE STRUCTURAL DESIGN OF TALL AND SPECIAL BUILDINGS
Struct. Design Tall Spec. Build. 22, 759–769 (2013)
Published online 7 September 2011 in Wiley Online Library (). DOI: 10.1002/tal.723Cyclic loading test of T-shaped mid-rise shear wallZhang Pin-Le*,? and Li Qing-ning
Department of Civil Engineering, Kunming University of Science and Technology, Kunming, ChinaSUMMARY
Shear wall systems are the most commonly used lateral load resisting systems in high-rise buildings. Six 1:2
scale mid-rise T-shaped reinforced concrete shear wall specimens with aspect ratio of 1.75, 2.15 and 2.80
were respectively tested under reversed cyclic loading. The seismic behavior and displacement ductility
were investigated. The effects of aspect ratio, axial load level and transverse steel ratio on the seismic
behavior and displacement ductility were also analyzed. Test results were discussed and compared with
T-shaped steel–concrete composite shear wall. Results mainly showed that the T-shaped shear wall speci-
mens mainly presented bending–shear failure mode and were all destroyed because of the concrete crushing
at the web (negative direction) and the longitudinal reinforcement of the web reaching the limited deforma-
tion (positive direction), showing that the web was the weakest part of T-shape shear wall. The ductility of
the specimens was decreased, and the ultimate load-bearing capacity was increased by increasing the axial
load. To specimens with smaller aspect ratio and higher axial load ratio, the special transverse steel ratio
of the web should be increased to improve the crushing strain of the confined concrete of the web in
order to satisfy the ductility of the walls. The seismic performance was obviously improved in the
T-shaped steel–concrete shear wall compared with that of the T-shaped reinforced concrete shear wall.
Copyright ? 2011 John Wiley Sons, Ltd.
Received 11 October 2010; Revised 28 July 2011; Accepted 1 August 2011
KEY WORDS: mid-rise shear wall; steel shear wal
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