- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | SUN Yang, XU Zhenyang, SONG Dewei, WANG Chongxiao, YANG Pan. Experimental Study on Bond Characteristics Between Concrete-Filled Steel Tube and Steel Bar Under Cyclic Loading[J]. Journal of Southwest Jiaotong University, 2023, 58(3): 638-644, 695. doi: 10.3969/j.issn.0258-2724.20210733
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In order to explore the bonding and anchoring performance of the reinforced concrete-filled steel tube (R-CFST) under cyclic loading, monotonic loading and cyclic loading tests were carried out on R-CFST specimens. The monotonic loading test is used to compare and analyze the response relationship between the bonding force and slip. Based on the monotonic loading test results, the bond behavior was experimentally investigated for several R-CFST specimens under uniaxial cyclic loading. The factors considered include the stirrup arrangement, the bond length, the rebar diameter, and the number of loading cycles. The effects of these factors on the bond behavior were explored. The bonding force degradation mechanism and failure modes of different specimens were analyzed. The results show that the stirrups increase the ability of the specimens to withstand cyclic loading; the bonding force and ductility of the R-CFST specimens increase with the increase of the bond length and the diameter of the steel bars; and the cohesive force and ductility decrease with the increase of the loading times of the cyclic load in the early stage. When the reinforced steel tube concrete bond fails, the entire bond zone is relatively smooth, and the deformation rib imprint is not obvious.
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