Eccentric compression behavior of spiral stirrup confined steel lattice reinforced columns

被引：0
|
作者：
Zhou C. [1 ,2 ]
Chen Z. [1 ,3 ]
机构：
[1] College of Civil Engineering and Architecture, Guangxi University, Nanning
[2] School of Civil and Environmental Engineering, Ningbo University, Ningbo
[3] Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University, Nanning
来源：
Chen, Zongping (zpchen@gxu.edu.cn) | 1600年 / Science Press卷 / 42期
关键词：
Eccentric compression test; Flexural stiffness; Load-carrying capacity; Spiral stirrup; Steel lattice reinforced concrete column;
D O I：
10.14006/j.jzjgxb.2018.0587
中图分类号：
学科分类号：
摘要：
To investigate the eccentric compression performance of spiral stirrup confined steel lattice reinforced concrete (SSCSLRC) columns, 22 specimens, including 19 SSCSLRC columns and three steel lattice reinforced concrete columns, were designed and tested under eccentric loading. The failure process and mechanism of specimens were revealed. The load-lateral deflection curves, load-strain curves, strain distribution of cross-section, and stiffness degradation curves were obtained. The load-carrying capacity and flexural stiffness were studied using parameter analysis of spiral stirrup spacing, eccentricity, the ratio of diameter and steel edge, ratio of height and cross-section length, steel batten spacing, steel ratio, and reinforcement ratio. The results show that compared to steel lattice reinforced concrete columns, the crashing of concrete of SSCSLRC column is smaller, and the descending branch of the load-lateral deflection curves is smoother. In the cross-section, the transverse strain of steel is linear, and the transverse strain of spiral stirrup is inhomogeneous. The load-carrying capacity and flexural stiffness of SSCSLRC columns increase by 4%-25% and 13%-39%, respectively, compared with those of steel lattice reinforced concrete columns. The load-carrying capacity and flexural stiffness all increase as the spiral spacing, steel batten spacing, eccentricity, ratio of height and cross-section length decrease and decrease as the ratio of diameter and steel edge decreases. The rate of stiffness degradation increases with the increase of spiral spacing, steel batten spacing, and the ratio of diameter and steel edge. © 2021, Editorial Office of Journal of Building Structures. All right reserved.
引用
收藏
页码：145 / 154
页数：9
相关论文
共 16 条
  • [1] XUE Jianyang, Steel-concrete composite structures, pp. 225-226, (2007)
  • [2] ZHANG Wenfu, JI Jing, LU Huawei, Et al., Behavior of angle reinforced concrete stub column under axial compression, Journal of Building Structures, 33, 4, pp. 121-127, (2012)
  • [3] ZHANG Wenfu, DU Juan, DONG Qinghui, Et al., Experimental and theoretical research on mechanical behavior of angle reinforced high-strength concrete short columns subjected to eccentric compression, Journal of Building Structures, 34, pp. 252-258, (2013)
  • [4] JIANG Shaofei, LIU Zhiyang, Application of artificial neural network to the design parameters prediction for steel-encased concrete frame columns and its adaptability, China Civil Engineering Journal, 30, 1, pp. 73-77, (1997)
  • [5] KIM C S, PARK H G, CHUNG K S, Et al., Eccentric axial load capacity of high-strength steel-concrete composite columns of various sectional shapes, Journal of Structural Engineering, 140, 4, (2014)
  • [6] BADALAMENTI V, CAMPIONE G, MANGIAVILLANO M L., Simplified model for compressive behavior of concrete columns strengthened by steel angles and strips, Journal of Engineering Mechanics, 136, 2, pp. 230-238, (2010)
  • [7] ZHAO Hongtie, Steel and concrete composite structures, pp. 193-203, (2001)
  • [8] NAGAPRASAD P, SAHOO D R, RAI D C., Seismic strengthening of RC columns using external steel cage, Earthquake Engineering & Structural Dynamics, 38, 14, pp. 1563-1586, (2009)
  • [9] SAHOO D R, RAI D C., A novel technique of seismic strengthening of nonductile RC frame using steel caging and aluminum shear yielding damper, Earthquake Spectra, 25, 2, pp. 415-437, (2009)
  • [10] PRIESTLEY M J N, SEIBLE F, XIAO Y, Et al., Steel jacket retrofitting of reinforced concrete bridge columns for enhanced shear strength: part 1: theoretical considerations and test design, ACI Structural Journal, 91, 4, pp. 394-405, (1994)
12