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Mechanical performance of ocean concrete-filled circular CFRP-steel tube columns under axial compression
Abstract The axial compressive mechanical properties of ocean concrete-filled circular CFRP-steel tube columns were investigated in this paper. Eighteen specimens were designed for testing with the position and number of CFRP as the variation parameters. The results show that the final failure mode of the specimens was significantly correlated with the position of the CFRP. The ultimate bearing capacity of the specimens was positively correlated with the number of layers of CFRP. And the ultimate bearing capacity of the specimens containing inner CFRP was higher with the same number of layers. The initial elastic rigidity of the specimen is less correlated with CFRP. The ductility of the specimens based on energy dissipation showed a significant overall decreasing trend with the increase of the number of layers of CFRP. In addition, 139 axial compression data samples of concrete-filled circular CFRP-steel tube columns were collected to verify the axial compression ultimate bearing capacity calculation equation proposed in this paper, and the results indicated that the calculated values can well reflect the measured data. Finally, the finite element model for this test specimen was established and expanded parametric analysis was performed, and the results were in good agreement with the calculation equations.
Highlights Experimental and numerical studies were conducted on the axial behavior of ocean concrete-filled CFRP-steel tube columns. The difference of enhancement benefit and action mechanism between Inner CFRP and outer CFRP was discussed. The working mechanism of ocean concrete-filled circular CFRP-steel tube columns was summarized. The formulas for calculating axial capacity of ocean concrete-filled circular CFRP-steel tube columns were established.
Mechanical performance of ocean concrete-filled circular CFRP-steel tube columns under axial compression
Abstract The axial compressive mechanical properties of ocean concrete-filled circular CFRP-steel tube columns were investigated in this paper. Eighteen specimens were designed for testing with the position and number of CFRP as the variation parameters. The results show that the final failure mode of the specimens was significantly correlated with the position of the CFRP. The ultimate bearing capacity of the specimens was positively correlated with the number of layers of CFRP. And the ultimate bearing capacity of the specimens containing inner CFRP was higher with the same number of layers. The initial elastic rigidity of the specimen is less correlated with CFRP. The ductility of the specimens based on energy dissipation showed a significant overall decreasing trend with the increase of the number of layers of CFRP. In addition, 139 axial compression data samples of concrete-filled circular CFRP-steel tube columns were collected to verify the axial compression ultimate bearing capacity calculation equation proposed in this paper, and the results indicated that the calculated values can well reflect the measured data. Finally, the finite element model for this test specimen was established and expanded parametric analysis was performed, and the results were in good agreement with the calculation equations.
Highlights Experimental and numerical studies were conducted on the axial behavior of ocean concrete-filled CFRP-steel tube columns. The difference of enhancement benefit and action mechanism between Inner CFRP and outer CFRP was discussed. The working mechanism of ocean concrete-filled circular CFRP-steel tube columns was summarized. The formulas for calculating axial capacity of ocean concrete-filled circular CFRP-steel tube columns were established.
Mechanical performance of ocean concrete-filled circular CFRP-steel tube columns under axial compression
Chen, Zongping (author) / Pang, Yunsheng (author) / Xu, Ruitian (author) / Zhou, Ji (author) / Xu, Weisheng (author)
2022-08-21
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2010
Stability of concrete filled CFRP-steel tube under axial compression
| British Library Conference Proceedings | 2009