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- Title
圆形CFRP-钢复合管海水海砂珊瑚混凝土柱 轴压性能试验研究.
- Authors
王高飞; 魏洋; 缪坤廷; 董峰辉; 郑开启
- Abstract
In order to better directly apply the undisturbed seawater sea-sand coral concrete to marine engineering, this paper performed a monotonous study on 12 carbon fiber reinforced plastics (CFRP)-steel composite tube filled circular seawater sea-sand coral concrete columns and 2 pure steel tube confined seawater sea-sand coral concrete columns. In the axial compression test, the main research parameters are the diameter-thickness ratio of the steel tube and the number of CFRP layers. The test has obtained the axial stress-strain relationship curve of the specimen. The results show that the specimen is in the form of shear failure with obvious shear slip line at the end of the column under axial pressure. The constraint effect of CFRP has no obvious effect on the initial section stiffness of the specimen, but has a significant effect on the stiffness of the specimen in the linear strengthening stage; With the increase of the number of CFRP layers, the ultimate stress and strain of the specimens are significantly increased; With the decrease of the diameter-thickness ratio of the steel tube, the mechanical properties of the specimens increase correspondingly; Combined with the test data, the existing FRP steel composite pipe confined concrete strength calculation model is evaluated
- Subjects
CARBON fiber-reinforced plastics; CONCRETE columns; STEEL tubes; MARINE engineering; MARINE engineers; STRESS-strain curves
- Publication
Acta Materiae Compositae Sinica, 2022, Vol 39, Issue 8, p3991
- ISSN
1000-3851
- Publication type
Article
- DOI
10.13801/j.cnki.fhclxb.20210909.012