Distortional buckling behavior of cold-formed steel built-up closed section columns

Li, Yanchun; Zhou, Tianhua; Zhang, Lei; Ding, Jiahao; Zhang, Xing-Chun

doi:10.1016/j.tws.2021.108069

Cited by 26 publications

(4 citation statements)

References 21 publications

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“…The built-up CFS column is normally provided of the mechanical behavior, especially the ultimate load value with twice or more than twice of the individual section under axial compression [4]. Roy and Lim [7] have reported the built-up face-to-face channel column which is classified as a hollow section with twice the strength of the individual section, and have promoted that the stability of the section is suitable to use in frames.…”

Section: Built-up Cold-formed Steel Columnmentioning

confidence: 99%

“…Nie et al [5] reported that local buckling and local-flexural buckling happened for the CFS closed section, and the built-up closed section with two channel sections could avoid the distortional buckling when subjected to compressive load. Li et al [4] reported that the study on the mechanical behavior of the built-up CFS, especially the effect of the distortional buckling, is still limited, and no research has been discussed due to the complexity of the cross-section.…”

Section: Built-up Cold-formed Steel Columnmentioning

confidence: 99%

“…The build-up section is formed by using a variety of fasteners or connectors, for instance, bolt and nut, full welding, spot welding, self-tapping screw, self-drilling screw, rivet, and innovation fastener. Li et al [4] have stated that the compression capacity in the axial condition of the built-up column section is allowed twice and more than twice of the basic section in producing the closed or symmetrical section. Nie et al [5] mentioned that there are a lot of researchers who studied screw spacing and thickness effect on the strength of built-up back-to-back CFS columns that are broadly utilized in engineering activity due to quick assembly and installation.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Behavior of Built-Up Cold-Formed Steel Stub Columns Infilled with Washed Bottom Ash Concrete

Sani

Muftah

Mohsan

et al. 2022

Adv. technol. innov.

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The main objective of the study is to determine the behavior of built-up cold-formed steel (CFS) stub columns infilled with washed bottom ash (WBA) concrete and also their failure mode. Five proportions of WBA as sand replacement in concrete and five specimens of built-up CFS stub columns infilled with WBA are produced in this study. There are four parts of the testing conducted: material properties of CFS, material properties of WBA concrete, mechanical properties of the connection, and mechanical behavior of built-up CFS stub columns. The result shows that the specimen with 25% WBA is reported to have the highest value of compressive strength in the material properties of WBA concrete and the mechanical behavior of built-up CFS stub column. The percentage difference of the ultimate load of the built-up CFS column filled with normal concrete and filled with WBA concrete is noted to have a range of 3% to 25%.

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Section: Built-up Cold-formed Steel Columnmentioning

confidence: 99%

Section: Built-up Cold-formed Steel Columnmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Behavior of Built-Up Cold-Formed Steel Stub Columns Infilled with Washed Bottom Ash Concrete

Sani

Muftah

Mohsan

et al. 2022

Adv. technol. innov.

View full text Add to dashboard Cite

show abstract

“…The method of connecting multiple single components to improve the carrying capacity of the single-member is already a common practice in cold-formed steel structures and aluminum alloy structures [3,4]. A similar approach is also used on hot-rolled steel components.…”

Section: Introductionmentioning

confidence: 99%

Global Buckling Investigation of the Flanged Cruciform H-shapes Columns (FCHCs)

Wang²,

Dai

et al. 2021

Applied Sciences

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In China, increasing the application ratio of hot-rolled H-shapes has become a severe problem that the government, academia, and engineering circles must vigorously address. Research on reasonable hot-rolled H-shapes built-up columns is one of the primary methods. After reviewing the various combination columns in the existing research, the paper proposes the new flanged cruciform H-shapes columns (FCHCs) made of three hot-rolled H-shapes. Using comprehensive imperfections given by the design standard, GB50017-2017, the paper analyzes the global buckling of FCHCs subjected to the axial compression load. The global buckling factor obtained is compared with the current national design code. Comparative analysis of seventy-two specimens of Q345 and Q460 steel found that the global buckling mode of FCHCs was flexural bending buckling around the axis of symmetry, and global torsional buckling and local buckling did not occur. Furthermore, the corresponding column curves in current design codes overestimate the dimensionless buckling strength of the novel FCHCs. Therefore, designers need to drop a class to select the global buckling factor within a specific range. Finally, new column global buckling curves are proposed based on a non-linear fitting of the numerical results according to the current national design codes.

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Structural Behaviour of Cold-Formed Steel Built-Up Closed Cross-section Columns - Assessing the Influence of Parameters and Design Methods

Selvaraj

Madhavan

2023

Engineering Structures

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Distortional buckling behavior of cold-formed steel built-up closed section columns

Cited by 26 publications

References 21 publications

Behavior of Built-Up Cold-Formed Steel Stub Columns Infilled with Washed Bottom Ash Concrete

Behavior of Built-Up Cold-Formed Steel Stub Columns Infilled with Washed Bottom Ash Concrete

Global Buckling Investigation of the Flanged Cruciform H-shapes Columns (FCHCs)

Structural Behaviour of Cold-Formed Steel Built-Up Closed Cross-section Columns - Assessing the Influence of Parameters and Design Methods

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