標題: Axial strength and ductility of square composite columns with two interlocking spirals
作者: Shih, Tsu-Han
Chen, Cheng-Chih
Weng, Cheng-Chiang
Yin, Samuel Yen-Liang
Wang, Jui-Chen
土木工程學系
Department of Civil Engineering
關鍵字: Composite column;Spiral;Axial compression;Strength;Ductility
公開日期: 1-十一月-2013
摘要: The axial compressive capacity and load-displacement behaviour of composite columns confined by two interlocking spirals were experimentally and analytically investigated. The innovative spiral cage used for a square column was fabricated by interlocking a circular spiral and a star-shaped spiral to enhance the confinement effect for the core concrete. Eight full-scale square composite columns were tested under monotonically increased axial compression. Experimental results demonstrated that, with significant savings of the transverse reinforcement, the composite columns confined by two interlocking spirals achieved excellent axial compressive strength and ductility capacity. Moreover, an analytical model was developed to take into account the concrete confinement due to the structural steel in addition to the transverse reinforcement and distributions of the longitudinal bars. The analytical results accurately predicted the axial compressive capacity and load-displacement behaviour of the specimens. Consequently, the application of the two interlocking spirals in a square composite column appears to be very affirmative. (C) 2013 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.jcsr.2013.07.021
http://hdl.handle.net/11536/23277
ISSN: 0143-974X
DOI: 10.1016/j.jcsr.2013.07.021
期刊: JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
Volume: 90
Issue: 
起始頁: 184
結束頁: 192
顯示於類別:期刊論文


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