| Title: | Transverse compressive behavior of plain and polypropylene fiber-reinforced concrete infilled steel tubes as hybrid steel-concrete nodes for discrete reticulated shell structures |
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| Authors: | ID Unuk, Žiga (Author) |
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| Files: |  1-s2.0-S0141029624017115-main.pdf (13,83 MB)
MD5: 50BDE805F118A1A2A95C29CD9F01D65D
 https://www.sciencedirect.com/science/article/pii/S0141029624017115?via%3Dihub
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
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| Abstract: | This study investigates using concrete infilled steel tubes as hybrid nodes for discrete reticulated shell structures under compressive loading transverse to the tube axis. Three configurations were tested: empty, plain concrete infilled and polypropylene fiber-reinforced concrete infilled steel tubes. Displacement-controlled loading was applied through welded steel plates. Simplified beam theory models and nonlinear finite element analysis were used to evaluate the structural behavior. The concrete infilled steel tube specimens had higher stiffness and load-bearing capacity than the empty ones. The structural behavior of the concrete infilled specimens could be split into pre- and post-split-tensile cracking phases. No significant difference was found between the plain and fiber-reinforced concrete specimens under loads up to 1500 kN, which was the load limit of the testing machine. An additional fiber-reinforced concrete specimen, tested on a higher capacity machine, had a load-bearing capacity of 2400 kN and exhibited ductile failure. |
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| Keywords: | concrete infilled steel tube, fiber-reinforced concrete, compressive loading, discrete reticulated shell structure node, simplified calculation, nonlinear finite element analysis |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 05.06.2024 |
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| Article acceptance date: | 14.10.2024 |
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| Publication date: | 22.10.2024 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2025 |
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| Number of pages: | 20 str. |
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| Numbering: | Vol. 322, pt. B, št. članka 119149 |
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| PID: | 20.500.12556/DKUM-92072  |
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| UDC: | 624.012.45:519.6 |
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| ISSN on article: | 1873-7323 |
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| COBISS.SI-ID: | 214332675 |
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| DOI: | 10.1016/j.engstruct.2024.119149 |
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| Copyright: | © 2024 The Author(s) |
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| Publication date in DKUM: | 19.01.2026 |
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| Views: | 137 |
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| Downloads: | 2 |
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| Metadata: |    |
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| Categories: | Misc.
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