Experimental Investigation on the Response of Elliptical CFT Columns Subjected to Lateral Impact Loading
Auteur(s): |
Yingtao Wang
Shaohua Hu |
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Médium: | article de revue |
Langue(s): | anglais |
Publié dans: | Buildings, 27 octobre 2022, n. 11, v. 12 |
Page(s): | 1847 |
DOI: | 10.3390/buildings12111847 |
Abstrait: |
This study reports an experimental investigation on the impact behavior of elliptical concrete-filled steel tubular (CFT) columns subjected to lateral loading. A total of five CFT columns, including one circular cross-section and four elliptical cross-sections, were tested using a horizontal-impact-testing system. The influences of the impact velocity, the impact times, and the cross-section geometry on the dynamic response of the elliptical CFT columns were analyzed. The experimental results have shown that the specimens withstood the global displacements without the buckling of the steel tubes. The strain rates of the steel tubes in this paper were small. The impact velocity had significant influences on the impact load-time histories and energy absorption. Meanwhile, the impact times had little influence on the impact force and displacement at the same impact velocity. Circular CFT columns have the highest ductility and impact-energy-absorption capacity. Based on the finite element analysis software ABAQUS, the finite element models of the elliptical CFT columns under impact loads were established. The simulation results were in good agreement with the experimental results. Finally, the mechanical mechanism of the elliptical CFT columns under lateral impact was analyzed by the finite element model. |
Copyright: | © 2022 by the authors; licensee MDPI, Basel, Switzerland. |
License: | Cette oeuvre a été publiée sous la license Creative Commons Attribution 4.0 (CC-BY 4.0). Il est autorisé de partager et adapter l'oeuvre tant que l'auteur est crédité et la license est indiquée (avec le lien ci-dessus). Vous devez aussi indiquer si des changements on été fait vis-à-vis de l'original. |
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10699783 - Publié(e) le:
10.12.2022 - Modifié(e) le:
15.02.2023