2006, Volume 8, Issue 12
Strategic Study of CAE >> 2006, Volume 8, Issue 12
Axial Compressive Behavior of Precast SRC Columns With Multi-Spirals
1. Ruentex Group, Taipei, Taiwan 10492, China
2. Chiao Tung University, Department of Civil Engineering, Hsinchu, Taiwan 30050, China
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Abstract
Presented herein is an experimental study on the axial compressive behavior of rectangular SRC (steel reinforced concrete) columns confined with a new type of multi-spiral cages. The multi-spiral is a device of five interconnected spiral cages, named “5-Spirals” or “Yin´s Spirals” in this study, with a large spiral at the center and four small ones at the comers. The innovation of applying the 5-spirals to rectangular SRC columns is to take its superiority in concrete confinement and its efficiency in automatic production for the precast construction industry. The major parameters of this study included the cost effectiveness of the multi-spirals, and the strength and ductility of the spirally confined SRC columns. As compared to the reinforced concrete column tied with traditional rectilinear hoops, the test results showed that, with significant cost savings of confinement steel, the SRC columns confined with 5-spirals demonstrated excellent performances in both strength and ductility.
Keywords
precast construction ; steel reinforced concrete ; rectangular SRC column ; multi-spirals ; 5-Spirals ; strength
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