Affiliation:
1. East China University of Technology
2. Wenzhou University
Abstract
Abstract
This paper focuses on the axial compression performance of 15 concrete filled double skin tubes CFDST columns by the different CFRP reinforcement schemes. The design of this test used an outer square steel tube with a square steel tube inside and concrete poured at the sandwich and the inner steel tube kept in hollow. Firstly, the damage mechanisms of the specimens were observed and analysed. Secondly, the mechanical properties of the specimens were further analysed from the data of load displacement, peak load and ultimate displacement. The data analysis was mainly used to compare the different axial compressive properties of CFDST columns wrapped with CFRP sheet and those without CFRP sheet. Finally, by referring to the previous model on CFRP-CFST, a modification was made and a computational model of a CFRP-confined CFDST column was developed, which was found to be in good agreement with the experimental results by comparison.
Publisher
Research Square Platform LLC
Reference31 articles.
1. Stress paths of confined concrete in axially loaded circular concrete-filled steel tube stub columns;Lin S;Engineering Structures,2018
2. Axial capacity of rectangular concrete-filled steel tube columns–DOE approach;Chitawadagi MV;Construction and Building Materials,2010
3. Ultimate strength of rectangular concrete-filled steel tubular (CFT) stub columns under axial compression;Huang YS;Steel and Composite Structures, An International Journal,2008
4. Performance and calculations of concrete filled steel tubes (CFST) under axial tension;Han LH;Journal of Constructional Steel Research,2011
5. Ding, F. X., Liu, J., Liu, X. M., Yu, Z. W., & Li, D. W. Mechanical behavior of circular and square concrete filled steel tube stub columns under local compression.Thin-Walled Structures, 94, 155–166 (2015).