Load Carrying Capacity Analysis of Multi-Spiral Reinforced Concrete Column
The behavior of confined concrete is highly dependent on the confinement type of transverse reinforcement, spiral hoops are generally believed to have better confined effect in concrete than rectangular hoops. It is verified through experiments and the oretical calculations that multi-spiral confined concrete columns have better mechanical properties than single spiral columns, the multi-spiral significantly increase the column’s strength, plasticity, ductility and anti-seismic capability. Based on the three-direction stress law of confined concrete, the load carrying capacity of the rectangular cross section concrete column with multi-spiral is analysed in this paper, and the calculated equation of the load carrying capacity is proposed, which provide a theory and calculation basis for multi-spiral confined concrete column design and research.
Jinglong Bu, Zhengyi Jiang and Sihai Jiao
J. Wu et al., "Load Carrying Capacity Analysis of Multi-Spiral Reinforced Concrete Column", Advanced Materials Research, Vols. 150-151, pp. 441-446, 2011