Journal
JOURNAL OF BUILDING ENGINEERING
Volume 34, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jobe.2020.101937
Keywords
Carbon fiber reinforced polymer (CFRP); Steel-CFRP hybrid Reinforcement; Concrete frame; Seismic performances; Residual deformation
Funding
- National Key Research and Development Program of China
- Jiangsu Planned Projects for Postdoctoral Research Funds [1601148B]
Ask authors/readers for more resources
The novel section design aims to enhance the seismic performance and durability of concrete frame structures. By reasonably allocating steel and CFRP reinforcement, the concrete frame with ideal mechanical properties can be achieved.
A novel section with Steel-carbon fiber reinforced polymer (CFRP) hybrid reinforcement is introduced. CFRP longitudinal reinforcements are placed in the outer layer of the section, while steel reinforcements are arranged in the inner layer. The new type section is utilized to reduce the residual deformation of anti-seismic structures and improve the durability of structures. Cyclic loading tests are conducted on the four concrete frame structure with an axial compression ratio of 0.31. Seismic performances of concrete frames with steel reinforcements, steel-CFRP hybrid reinforcements and CFRP reinforcements are compared and studied. The major objectives of study are focus on the performance of CFRP reinforcements under the axial compression ratio of 0.31 and the ductility, energy dissipation, strength degradation, unloading stiffness, residual deformation of the frame structure with different reinforcement modes. Test results showed that as compared with the steel reinforced concrete frame, Steel-CFRP hybrid reinforced concrete frame exhibited excellent post-earthquake repairabilities, comparable hysteretic energy dissipation abilities and reasonable strength degradation. Furthermore, when the axial compression ratio is 0.31, the ultimate tensile strength of CFRP reinforcements calculated in accordance with the bearing capacity is 27.2%-32% of the static ultimate tensile strength. The concrete frame with ideal mechanical properties can be obtained by reasonable allocation of steel and CFRP reinforcement.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available