Research on Local Corrosion Effects on Mechanical Properties of Concrete-Filled Circular Steel Tubes Under Eccentric Compression

ZHANG Yuchen; GUO Xianzhao; ZHANG Chenming; ZHANG Lei; CHEN Guangrui; ZHANG Sumei

doi:10.13204/j.gyjzG21111011

Volume 53 Issue 9

Sep. 2023

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ZHANG Yuchen, GUO Xianzhao, ZHANG Chenming, ZHANG Lei, CHEN Guangrui, ZHANG Sumei. Research on Local Corrosion Effects on Mechanical Properties of Concrete-Filled Circular Steel Tubes Under Eccentric Compression[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(9): 69-77. doi: 10.13204/j.gyjzG21111011

Citation:

ZHANG Yuchen, GUO Xianzhao, ZHANG Chenming, ZHANG Lei, CHEN Guangrui, ZHANG Sumei. Research on Local Corrosion Effects on Mechanical Properties of Concrete-Filled Circular Steel Tubes Under Eccentric Compression[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(9): 69-77. doi: 10.13204/j.gyjzG21111011

Citation:

ZHANG Yuchen, GUO Xianzhao, ZHANG Chenming, ZHANG Lei, CHEN Guangrui, ZHANG Sumei. Research on Local Corrosion Effects on Mechanical Properties of Concrete-Filled Circular Steel Tubes Under Eccentric Compression[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(9): 69-77. doi: 10.13204/j.gyjzG21111011

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Research on Local Corrosion Effects on Mechanical Properties of Concrete-Filled Circular Steel Tubes Under Eccentric Compression

doi: 10.13204/j.gyjzG21111011

1. School of Civil and Environmental Engineering, Harbin Institute of Technology(Shenzhen), Shenzhen 518055, China;
2. China Railway Design Group Co., Ltd., Tianjin 300142, China

Received Date: 2021-11-10
Available Online: 2023-11-08

Abstract

Abstract

18 specimens of concrete-filled circular steel tubular long columns were tested for corrosion and subsequently subjected to eccentric compression. The specimens with different corrosion degrees were obtained by accelerated corrosion of electricity. After the corrosion, eccentric compression tests were carried out to explore the effects of local corrosion on the mechanical properties of the circular concrete-filled steel tubes. Three theoretical analysis models of locally corroded circular concrete-filled steel tubes under eccentric compression were established by ABAQUS finite element program, including uniform corrosion, macro uneven corrosion and micro uneven corrosion, which provided references for the locally-corroded concrete-filled circular steel tubular models. The results showed that the locally-corroded concrete-filled circular steel tubes suffered cross-section crush failure. The ultimate bearing capacity decreased with the increase of corrosion rate, circumferential corrosion rate, eccentricity and slenderness ratio. Compared with the uncorroded specimens, when the geometric parameters were the same as the corrosion area, and the corrosion rate increased to 20.00%, the ultimate bearing capacity decreased by 11.70%. When establishing a finite element model of locally-corroded concrete-filled circular steel tube, it was recommended to select different corrosion models according to the surfaces of the corroded steel tubes.
- local corrosion,
- concrete-filled steel tubes,
- eccentric compression,
- ultimate bearing capacity,
- finite element analysis

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References(26)

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