Title: Interlocking Spiral Confinement for Rectangular Columns

Author(s): Samuel Yen-Liang Yin, Tzu-Liang Wu, Tony C. Liu, Shamim A. Sheikh, and Raymond Wang

Publication: Concrete International

Volume: 33

Issue: 12

Appears on pages(s): 38-45

Keywords: concrete, reinforcement, axial compression, lateral cyclic loading, design

DOI:

Date: 12/1/2011

Abstract:
Recently, an innovative interlocking multi-spiral confinement design for rectangular concrete columns was developed. This development involved testing and evaluation of a large number of full-scale reinforced concrete columns in axial compression and lateral cyclic loadings. Test results presented in this article verify that columns with interlocking multi-spiral confinement design exhibit higher compressive strength and ductility when compared to columns with conventional rectilinear hoop design. The multi-spiral confinement design was also found to be the most efficient layout in terms of automatic assembly.