| Issue |
E3S Web of Conf.
Volume 490, 2024
5th International Symposium on Architecture Research Frontiers and Ecological Environment (ARFEE 2023)
|
|
|---|---|---|
| Article Number | 01013 | |
| Number of page(s) | 12 | |
| Section | Material Performance Simulation and Low-Carbon Building Design | |
| DOI | https://doi.org/10.1051/e3sconf/202449001013 | |
| Published online | 14 February 2024 | |
Axial compressive behavior of CFRP reinforced concrete filled steel tube short columns with a circumferential gap
1 China MCC5 Group Corp., Ltd, ChengDu 610036, Si Chuan Province, China
2 School of Civil Engineering, Jiaying University, Meizhou 514015, Guangdong Province, China
* Binglun Chen, Email: 1043872577@qq.com. Zhishuo Yang, Email: chengbinglun@163.com.
Carbon fiber reinforced polymer (Carbon Reinforced Polymer Plastic) can effectively use its own tensile properties to provide stronger restraint for concrete, and can delay the buckling of steel pipes after yielding, and has been widely used in engineering repair and reinforcement. For the CFST composite structure with annular void defects, whether the reinforcement of CFRP can make up for a series of problems caused by void defects is still a fog. In order to explore the axial compression performance of CFRP (carbon fiber cloth) reinforced concrete-filled steel tubular short columns with circumferential void defects, 12 CFRP-reinforced CFRP short columns with circumferential void defects were proposed to be reinforced with a void ratio of 1.1-2.2%. The axial compression performance test was carried out to analyze the influence of parameters such as void ratio and the number of reinforcement layers on the axial compression performance, and a corresponding finite element model was established to assist in analyzing its working mechanism. The test results show that with the increase of the void ratio, the ultimate bearing capacity and the corresponding displacement of the components show a downward trend, and the deformation capacity is also greatly weakened. The ductility of the empty specimen is significantly improved, and the ductility of the specimen is also strengthened. With the increase of the number of reinforcement layers, the buckling deformation restraint effect of CFRP on the steel pipe becomes more and more significant, and it also provides better hoop restraint for the core concrete. To a certain extent, CFRP can reduce the effect of annular voiding defects.
© The Authors, published by EDP Sciences, 2024
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