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Mechanical behavior of locally corroded circular steel tube under compression
- Source :
- Structures. 33:776-791
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Localized corrosion often occurs on steel members due to paint peeling led from insufficient durability of the coating material or human collision, which may significantly reduce the load carrying capacity and safety performance of the structures. The effects of the parameters such as localized corrosion penetration, circumferential corrosion ratio, longitudinal corrosion ratio, slenderness ratio and eccentricity of mechanical behaviors of locally corroded circular steel tubes under compression were studied experimentally and numerically. Based on the test results and the finite element analysis, a calculation method was proposed for predicting load carrying capacity of the corroded specimen under compression. It is found that localized corrosion did not change the failure modes of test specimens, and all of them failed in the limit point buckling mode. The factors affecting the degradation of load carrying capacity and stiffness of localized corrosion specimens from high to low were corrosion time, circumferential corrosion ratio and longitudinal corrosion ratio. The most unfavorable localized corrosion modes of load carrying capacity and stiffness were H3L3-270 and H3L1-270, respectively. The load carrying capacity degradation of members increases with the increase of the localized corrosion ratio, circumferential corrosion ratio and longitudinal corrosion ratio, while decreases with the increase of the eccentricity. The formula proposed can be used to predict the load carrying capacity of locally corroded circular steel tube members under compression.
- Subjects :
- Materials science
0211 other engineering and technologies
Stiffness
020101 civil engineering
02 engineering and technology
Building and Construction
Penetration (firestop)
engineering.material
Compression (physics)
Durability
Finite element method
0201 civil engineering
Corrosion
Coating
Buckling
021105 building & construction
Architecture
medicine
engineering
medicine.symptom
Composite material
Safety, Risk, Reliability and Quality
Civil and Structural Engineering
Subjects
Details
- ISSN :
- 23520124
- Volume :
- 33
- Database :
- OpenAIRE
- Journal :
- Structures
- Accession number :
- edsair.doi...........2869aa8d5eddc7da9d361e2b4e1820cc