Buckling Analysis and Section Optimum for Square Thin-Wall CFST Columns Sealed by Self-Tapping Screws
Joint Authors
Zhang, He
Wu, Kai
Xu, Chao
Ren, Lijian
Chen, Feng
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-01-15
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
Two columns of thin-walled concrete-filled steel tubes (CFSTs), in which tube seams are connected by self-tapping screws, are axial compression tested and FEM simulated; the influence of local buckling on the column compression bearing capacity is discussed.
Failure modes of square thin-wall CFST columns are, first, steel tube plate buckling and then the collapse of steel and concrete in some corner edge areas.
Interaction between concrete and steel makes the column continue to withstand higher forces after buckling appears.
A large deflection analysis for tube elastic buckling reflects that equivalent uniform stress of the steel plate in the buckling area can reach yield stress and that steel can supply enough designing stress.
Aiming at failure modes of square thin-walled CFST columns, a B-type section is proposed as an improvement scheme.
Comparing the analysis results, the B-type section can address both the problems of corner collapse and steel plate buckling.
This new type section can better make full use of the stress of the concrete material and the steel material; this type section can also increase the compression bearing capacity of the column.
American Psychological Association (APA)
Zhang, He& Wu, Kai& Xu, Chao& Ren, Lijian& Chen, Feng. 2019. Buckling Analysis and Section Optimum for Square Thin-Wall CFST Columns Sealed by Self-Tapping Screws. Advances in Civil Engineering،Vol. 2019, no. 2019, pp.1-14.
https://search.emarefa.net/detail/BIM-1115847
Modern Language Association (MLA)
Zhang, He…[et al.]. Buckling Analysis and Section Optimum for Square Thin-Wall CFST Columns Sealed by Self-Tapping Screws. Advances in Civil Engineering No. 2019 (2019), pp.1-14.
https://search.emarefa.net/detail/BIM-1115847
American Medical Association (AMA)
Zhang, He& Wu, Kai& Xu, Chao& Ren, Lijian& Chen, Feng. Buckling Analysis and Section Optimum for Square Thin-Wall CFST Columns Sealed by Self-Tapping Screws. Advances in Civil Engineering. 2019. Vol. 2019, no. 2019, pp.1-14.
https://search.emarefa.net/detail/BIM-1115847
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1115847