Influence of slenderness on axial compressive bearing capacity of spirals reinforced concrete column

被引：0
|
作者：
Liu X. [1 ,2 ]
Xie S. [1 ,3 ]
Yu Z. [1 ,2 ]
Yang Y. [1 ]
Qi M. [1 ]
机构：
[1] School of Civil Engineering, Central South University, Changsha
[2] National Engineering Laboratory of High Speed Railway Construction, Changsha
[3] Central-South Architectural Design Institute Co., Ltd, Wuhan
来源：
| 1600年 / Science Press卷 / 41期
关键词：
Bearing capacity; Nonlinear finite element analysis; Slenderness; Spiral reinforced concrete column; Stability coefficient;
D O I：
10.14006/j.jzjgxb.2017.0765
中图分类号：
学科分类号：
摘要：
The calculation formula for the axial compressive strength of spiral reinforced concrete columns specified in GB 50010-2010 'Code for design of concrete structures' does not quantify the influence of slenderness on the compressive strength of the column. The codified equation is not consistent with that for normal reinforced concrete columns in the related specifications of technical standards at home and abroad. To quantitatively analyze the influence of slenderness on the axial compressive behavior of spiral reinforced concrete columns, refined elasto-plastic finite element models were established for spiral reinforced concrete columns based on ANSYS software, and FE analysis were carried out based on the validated FE model to obtain the failure process of the spiral reinforced columns with different diameter and length diameter ratio under axial compression. The results demonstrate that the axial compressive strength of the spiral reinforced column decreases with the increase in the core's length diameter ratio. The axial compressive bearing capacity of the spiral reinforced column is decreased by less than 4% when the core's length diameter ratio increases from 2 to 5, and the corresponding bearing capacity decreases by more than 25% when the reaches 15. A calculation formula giving the axial compressive bearing capacity of spiral reinforced column were proposed, and the corresponding stability coefficients were suggested based on a regression analysis of the simulated results. © 2020, Editorial Office of Journal of Building Structures. All right reserved.
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页码：183 / 190
页数：7
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