Limit Analysis of Bearing Capacity of CFRP Confined High Strength Concrete Filled Steel Tube Stub Columns Under Axial Compression

被引：0
|
作者：
Li S. [1 ]
Jiao C. [1 ]
He S. [1 ]
Liang J. [1 ]
Li H. [1 ]
机构：
[1] School of Civil Engineering, Guangzhou Univ., Guangzhou
来源：
Gongcheng Kexue Yu Jishu/Advanced Engineering Sciences | 2022年 / 54卷 / 02期
关键词：
CFRP confined steel tube-HSC; Lateral pressure effect coefficient; Ultimate bearing capacity; Ultimate equilibrium method;
D O I：
10.15961/j.jsuese.202001108
中图分类号：
学科分类号：
摘要：
To study the ultimate bearing capacity of carbon fiber reinforced polymer (CFRP) confined high-strength concrete filled steel tube stub columns under axial compression,the failure process and working mechanism of CFRP confined high-strength concrete filled steel tube (CFRP confined steel tube-HSC) stub columns under axial compression was discussed. The main differences and relationship between CFRP confined steel tube- HSC and CFRP confined concrete filled steel tube (CFRP confined steel tube-C) stub columns members were analyzed, which laid the foundation for the ultimate analysis of the bearing capacity of CFRP confined steel tube- HSC stub columns. Based on the limit equilibrium method, the stress analyses of HSC, steel tube and CFRP were carried out. The theoretical calculation formula of CFRP confined steel tube-HSC stub column was derived. The theoretical formula was verified by comparing the calculated results with the measured ones. Finally, the variations of the theoretical calculation results with the number of CFRP layers and the thickness of steel tube wall were analyzed. The results showed that compared with CFRP confined steel tube-C, CFRP confined steel tube-HSC had a poor constraint effect. For the bearing capacity improvement of CFRP confined steel tube-HSC stub column, the thick wall steel tube had a great advantage. Copyright ©2022 Advanced Engineering Sciences. All rights reserved.
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页码：162 / 169
页数：7
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