Numerical Simulation Analysis of Concrete-Filled Circular CFRP–Steel Middle Long Columns
Source abstract
Abstract
Based on the research on concrete-filled circular steel tubular columns, the influence of carbon-fiber-reinforced polymers (CFRPs) on the ultimate bearing capacity of concrete-filled steel tubes (CFSTs) was further explored in this paper. Ten different concrete-filled circular CFRP–steel middle long columns were made for an axial compression test, and the influence of the CFRP layers, the concrete strength grades, the steel tube wall thickness, and the slenderness ratio on the ultimate bearing capacity was discussed. Combined with theoretical analysis, the calculation method of ultimate bearing capacity of it was found. The load midspan deflection diagram was obtained by numerical simulation with finite element analysis software ANSYS2021R1, and the test results were compared. The results demonstrate that CFRP layers significantly enhance the ultimate bearing capacity of circular steel tube–CFRP confined concrete columns, with one to three layers increasing the capacity by 42.5%, 69.4%, and 88.4%, respectively, under identical conditions. In comparison, the concrete strength, the steel tube thickness, and the slenderness ratio showed lesser effects (<20% improvement), providing critical support for engineering applications of CFRP-confined circular steel tubular columns. Moreover, the error of ANSYS calculation results is small, which is in line with the test. This is of great significance to verify the correctness of the test of concrete-filled circular CFRP–steel middle long columns.
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Research context
OpenAlex topics: Structural Behavior of Reinforced Concrete · Structural Load-Bearing Analysis · Structural Engineering and Vibration Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China
Key Laboratory of Health Intelligent Perception and Ecological Restoration of River and Lake, Ministry of Education, Hubei University of Technology, Wuhan 430068, China
China Railway Major Bridge Engineering Group Co., Ltd., Wuhan 430050, China
School of Engineering Technology, Hubei University of Technology, Wuhan 430068, China
Funding
National Natural Science Foundation of China · Knowledge Innovation Program of Wuhan-Shuguang Project · State Key Laboratory of Bridge Structure Health and Safety · Project of Outstanding Young and Middle-aged Scientific and Technological Innovation Team in Hubei Universities and Colleges · Doctoral Start-up Fund of Hubei University of Technology
References (33)
Show source-provided references
1. Zhao, Y.-H., Gu, W., and Wang, Q.-L. (2004, January 21). Experimental study on the compressive strength of concrete filled CFRP-steel columns. Proceedings of the 6th China-Japan-US Joint Conference on Composite Materials (CJAJCC-6), Chongqing, China.
2. Zhao, Y.-H., and Gu, W. (2007). Study on Mechanical of Concrete Filled CFRP-Steel Tube Column, Dalian Maritime University.
3. Research on bearing capacity of long concrete-filled CFRP-steel tubular columns with axial compression
4. Axially loaded concrete-filled steel tubes10.1061/(ASCE)0733-9445(1998)124:10(1125) ↗
5. Structural behavior of concrete filled steel tubes
6. Experimental and numerical investigations of stainless-steel tubular columns strengthened by CFRP composites
7. Eccentric compressive behavior of steel fiber-reinforced RC columns strengthened with CFRP wraps: Experimental investigation and analytical modeling10.1016/j.engstruct.2020.111389 ↗
8. Structural behaviors of deficient steel CHS short columns strengthened using CFRP10.1016/j.jcsr.2017.07.021 ↗
9. Analytical Studies of Concrete-Filled Circular Steel Tubes under Axial Compression10.1061/(ASCE)ST.1943-541X.0000156 ↗
10. Analytical Model of Circular CFRP Confined Concrete-Filled Steel Tubular Columns under Axial Compression10.1061/(ASCE)CC.1943-5614.0000056 ↗
11. Liu, L., and Lu, Y.-Y. (2009). Research on the Basic Mechanical Property of Concrete-Filled FRP and Steel Tube Composite Columns, Wuhan University.
12. Jiang, Z.-X., and Zhao, Y.-H. (2017). Study on Axial Bearing Capacity of Confined Concrete Filled CFRP Steel Tube, Dalian Maritime University.
13. Compressive performances of the concrete filled circular CFRP-steel tube (C-CFRP-CFST)
14. Confined concrete-filled tubular columns10.1061/(ASCE)0733-9445(2005)131:3(488) ↗
15. (2017). Standard for Design of Steel Structures (Standard No. GB 500017-2017).
16. (2011). Specification for Mix Proportion Design of Ordinary Concrete. (Standard No. JGJ 55-2011).
17. Cai, S.-H. (1989). Structure Calculation and Application of Concrete-Filled Steel Tube, China Construction Industry Press.
18. Ma, Z.-Q. (2013). Performance Investigation of FRP-Concrete-Steel Double-Skin Square Columns Under Eccentric Compressive Loading, Zhengzhou University.
19. Experimental and computational study of concrete filled steel tubular columns under axial loads10.1016/j.jcsr.2006.04.004 ↗
20. (2002). Metallic Materials-Tensile Testing at Ambient Temperature (Standard No. GB/T 228-2002).
21. (2014). Test Method for Tensile Properties of Orientation Fiber Reinforced Polymer Matrix Composite Materials (Standard No. GB/T 3354-2014).
22. Simplified strength calculation of the concentrically compressed concrete filled CFRP-steel tubular stub columns
23. Landscape academy-the design concept of Xiushui Middle School
24. Bearing capacity of middle long concrete-filled circular steel tubular columns under axial compression
25. Li, S.-L. (2008). Theoretical Analysis and Numerical Simulation of Flexural Behavior of Bridge Strengthened with Prestressed CFRP, Wuhan University of Technology.
26. Mechanical behavior of round-ended steel tube under eccentric load
27. Research on the mechanical behavior of concrete-filled round-ended weathering steel tubular stub columns under axially compressive loading
28. Application of ANSYS in Compression Analysis of High-Strength Concrete Columns Confined by CFRP
29. Axial Compression Performance of RCFST Middle Long Columns
30. Finite element analysis of axial compression performance of long columns in circular steel tube concrete
31. Ren, Z. (2003). ANSYS Practical Analysis Course, Peking University Press.
32. Behaviors of CFST members under compression externally reinforced by CFRP composites10.3846/13923730.2012.743925 ↗
33. A review of the research on the axial compressive properties of concrete-filled steel tube (CFST) short columns