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Mechanical Behavior of Circular Steel Tubular Beam-Columns Corroded Uniformly in Atmospheric Environment
- Source :
- Applied Sciences, Vol 10, Iss 6, p 1998 (2020), Applied Sciences, Volume 10, Issue 6
- Publication Year :
- 2020
- Publisher :
- MDPI AG, 2020.
-
Abstract
- Circular steel tube members with the absence of anticorrosive protection or coating failure are prone to uniform corrosion, which threatens the reliability and safety of members in the atmospheric environment. To fully study the mechanical behavior of uniformly corroded circular steel tubes, compression test and theoretical analysis were conducted, and two methods considering section reduction and material degradation, respectively, were adopted for the calculation of ultimate load carrying capacities of specimens. The results indicate that uniform corrosion did not change the failure modes of specimens, and all of them belonged to global buckling failure. The load carrying capacities and stiffness of specimens decreased with the increase of corrosion ratio, and the degree of reduction was greater than that of material degradation, showing a linear relationship with the corrosion rate. Under the same corrosion ratio, the specimens with larger eccentricity represented more obvious load carrying capacity and stiffness degradation. The load carrying capacities predicted by both methods were in good agreement with the test results and had a certain safety margin. The conservative degree of calculation results from three specifications followed a descending order of ANSI/AISC 360-16, GB 50017-2017, and EN 1993-1-1. Under the same corrosion ratio, the load carrying capacity variation of specimens between one-sided corrosion and two-sided corrosion was less than 3%.
- Subjects :
- Ultimate load
Materials science
media_common.quotation_subject
experimental research
0211 other engineering and technologies
02 engineering and technology
engineering.material
lcsh:Technology
Corrosion
lcsh:Chemistry
Coating
load carrying capacity prediction
021105 building & construction
medicine
General Materials Science
Eccentricity (behavior)
Composite material
lcsh:QH301-705.5
Instrumentation
media_common
Fluid Flow and Transfer Processes
lcsh:T
Process Chemistry and Technology
General Engineering
atmospheric environment
Stiffness
021001 nanoscience & nanotechnology
Load carrying
lcsh:QC1-999
Computer Science Applications
uniform corrosion
lcsh:Biology (General)
lcsh:QD1-999
Buckling
lcsh:TA1-2040
engineering
circular steel tube
medicine.symptom
lcsh:Engineering (General). Civil engineering (General)
0210 nano-technology
lcsh:Physics
Beam (structure)
Subjects
Details
- ISSN :
- 20763417
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- Applied Sciences
- Accession number :
- edsair.doi.dedup.....4e5f82a884c9700e2675fd44f0f6c82e