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Research on Damage Assessment of Concrete-Filled Steel Tubular Column Subjected to Near-Field Blast Loading
Joint Authors
Sun, Shanshan
Song, Meimei
Zhao, Junhai
Qu, Zhan
Cui, Ying
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-19, 19 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-11-23
Country of Publication
Egypt
No. of Pages
19
Main Subjects
Abstract EN
Concrete-filled steel tubular (CFST) columns are widely used in engineering structures, and they have many different cross section types.
Among these, normal solid sections and concrete-filled double-skin steel tubular sections are often used.
Although many studies have been conducted on CFST columns with these two section types, no studies have been conducted on their damage assessment under blast loading.
In this study, experimental analysis and a numerical simulation method were integrated to evaluate the responses and assess the damage of two concrete-filled steel tubular (CFST) columns with different cross sections subjected to near-field blast loading.
The results showed that for a scaled distance of 0.14 m/kg1/3, plastic bending deformation occurred on the surfaces of the two CFST columns facing the explosive.
The antiexplosion performance of the normal solid-section (NSS) CFST column was better than that of the concrete-filled double-skin steel tubular (CFDST) column.
The explosion centre was set at the same height as the middle of column, and the distributions of the peak pressure values of the two columns were similar: the peak pressures at the middle points of the columns were the greatest, and the peak pressures at the bottom were higher than those at the top.
With the analysis of the duration of the positive pressure, the damage at the middle was the most severe when subjected to blast loading.
Using pressure-impulse damage theory and the validated numerical simulations, two pressure-impulse damage evaluation curves for NSS and CFDST columns were established separately by analysing the experimental and simulation data.
Finally, based on the two pressure-impulse damage evaluation curves, the two pressure-impulse damage criteria for these two different fixed-end CFST columns were defined based on the deflection of the surfaces facing the explosives.
Furthermore, the mathematical formulae for the two different column types were established to generate pressure-impulse diagrams.
With the established formulae, the damage of the CFST columns with these two cross section types can be evaluated.
Damage to other similar CFST columns with different cross section types due to near-field blast loading can also be evaluated by this method.
American Psychological Association (APA)
Cui, Ying& Song, Meimei& Qu, Zhan& Sun, Shanshan& Zhao, Junhai. 2020. Research on Damage Assessment of Concrete-Filled Steel Tubular Column Subjected to Near-Field Blast Loading. Shock and Vibration،Vol. 2020, no. 2020, pp.1-19.
https://search.emarefa.net/detail/BIM-1213144
Modern Language Association (MLA)
Cui, Ying…[et al.]. Research on Damage Assessment of Concrete-Filled Steel Tubular Column Subjected to Near-Field Blast Loading. Shock and Vibration No. 2020 (2020), pp.1-19.
https://search.emarefa.net/detail/BIM-1213144
American Medical Association (AMA)
Cui, Ying& Song, Meimei& Qu, Zhan& Sun, Shanshan& Zhao, Junhai. Research on Damage Assessment of Concrete-Filled Steel Tubular Column Subjected to Near-Field Blast Loading. Shock and Vibration. 2020. Vol. 2020, no. 2020, pp.1-19.
https://search.emarefa.net/detail/BIM-1213144
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1213144