Flexural performance of cold-formed square tube splice joints connected by self-tapping screws
Experimental studies and numerical simulations are performed to investigate flexural performance of cold-formed square tube (CFST) splice joints connected by self-tapping screws. Seven specimens were fabricated from the external steel plate and inner sleeve using self-tapping screws and underwent va...
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| Published in | Structures (Oxford) Vol. 63; p. 106404 |
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| Main Authors | , , , , , |
| Format | Journal Article |
| Language | English |
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Elsevier Ltd
01.05.2024
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| Abstract | Experimental studies and numerical simulations are performed to investigate flexural performance of cold-formed square tube (CFST) splice joints connected by self-tapping screws. Seven specimens were fabricated from the external steel plate and inner sleeve using self-tapping screws and underwent variations in screw quantity. Refined finite element models were developed and calibrated using a dataset of test results from cold-formed square tube splice joints. Subsequently, an extensive parametric study was undertaken to expand the CFST splice joints data pool, covering the CFST strength, thickness, screw diameter, spacing, as well as the number of rows and columns screws. Finally, a dependable design method for the flexural bearing capacity of CFST splice joints was derived from the experimental and finite element analysis results. The conclusions are as follows: (1) The flexural performance of inner sleeve specimens surpasses that of external steel plate specimens significantly. (2) Variations in steel strength and thickness minimally impacted the flexural bearing capacity of the specimens. Alterations in screw diameter, longitudinal spacing, rows and columns notably influenced the flexural performance of the specimens. (3) A comparison revealed that the proposed design method exhibited higher accuracy and safety in calculating the flexural bearing capacity of CFST splice joints. |
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| AbstractList | Experimental studies and numerical simulations are performed to investigate flexural performance of cold-formed square tube (CFST) splice joints connected by self-tapping screws. Seven specimens were fabricated from the external steel plate and inner sleeve using self-tapping screws and underwent variations in screw quantity. Refined finite element models were developed and calibrated using a dataset of test results from cold-formed square tube splice joints. Subsequently, an extensive parametric study was undertaken to expand the CFST splice joints data pool, covering the CFST strength, thickness, screw diameter, spacing, as well as the number of rows and columns screws. Finally, a dependable design method for the flexural bearing capacity of CFST splice joints was derived from the experimental and finite element analysis results. The conclusions are as follows: (1) The flexural performance of inner sleeve specimens surpasses that of external steel plate specimens significantly. (2) Variations in steel strength and thickness minimally impacted the flexural bearing capacity of the specimens. Alterations in screw diameter, longitudinal spacing, rows and columns notably influenced the flexural performance of the specimens. (3) A comparison revealed that the proposed design method exhibited higher accuracy and safety in calculating the flexural bearing capacity of CFST splice joints. |
| ArticleNumber | 106404 |
| Author | He, Dongliang Sang, Liurui Zhou, Tianhua Liao, Tianwei Wang, Shuaibing Zhao, Wenjie |
| Author_xml | – sequence: 1 givenname: Shuaibing surname: Wang fullname: Wang, Shuaibing organization: School of Civil Engineering, Chang'an University, Xi'an 710061, China – sequence: 2 givenname: Tianhua surname: Zhou fullname: Zhou, Tianhua email: zhouth@chd.edu.cn organization: School of Civil Engineering, Chang'an University, Xi'an 710061, China – sequence: 3 givenname: Dongliang surname: He fullname: He, Dongliang organization: School of Civil Engineering, Chang'an University, Xi'an 710061, China – sequence: 4 givenname: Wenjie surname: Zhao fullname: Zhao, Wenjie organization: School of Civil Engineering, Chang'an University, Xi'an 710061, China – sequence: 5 givenname: Tianwei surname: Liao fullname: Liao, Tianwei organization: School of Civil Engineering, Chang'an University, Xi'an 710061, China – sequence: 6 givenname: Liurui surname: Sang fullname: Sang, Liurui organization: School of Sciences, Chang'an University, Xi'an 710061, China |
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| Cites_doi | 10.1016/j.engfailanal.2018.05.011 10.1016/j.tws.2022.110292 10.1016/j.tws.2022.108909 10.1016/j.conbuildmat.2019.07.163 10.1016/j.tws.2018.08.012 10.1016/j.engstruct.2019.109911 10.1016/j.engstruct.2023.115593 10.1016/j.engstruct.2023.116146 10.1016/j.engstruct.2016.07.027 10.1016/j.engstruct.2018.09.082 10.1016/j.tws.2017.11.045 10.1016/j.tws.2019.106263 10.1016/j.istruc.2020.08.061 10.1016/j.tws.2021.108600 10.1016/j.jcsr.2023.108431 |
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| Keywords | Numerical analysis Splice joint Calculation method Cold-formed square tube Flexural performance Experimental investigation |
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| SubjectTerms | Calculation method Cold-formed square tube Experimental investigation Flexural performance Numerical analysis Splice joint |
| Title | Flexural performance of cold-formed square tube splice joints connected by self-tapping screws |
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