Istrazivanja i projektovanja za privreduJournal of Applied Engineering Science


DOI: 10.5937/jaes0-35895 
This is an open access article distributed under the CC BY 4.0
Creative Commons License

Volume 20 article 1010 pages: 1040-1052

Ibrahim AL-Zubaidi
Department of Civil Engineering, The University of Jordan, Amman, Jordan

Mu’tasim Abdel-Jaber
Department of Civil Engineering, Al-Ahliyya Amman University, Amman, Jordan

Yasser M. Hunaiti
Department of Civil Engineering, The University of Jordan, Amman, Jordan

Rola El-Nimri*
Department of Civil Engineering, The University of Jordan, Amman, Jordan

This study aims to investigate experimentally and numerically the behavior of light-gauge steel tubes filled with normal and lightweight concrete under axial loading. A total of thirty-five specimens, including thirty-two composite columns, two bare steel columns, and one normal-weight plain concrete column, were considered. The main variables in the tests were the concrete infill type (normal-weight and lightweight), the column’s length (1, 1.25, 1.5, 1.75-m), the steel tube thickness (2 and 2.4-mm), and the cross-section (100×100 and 150×150-mm). In addition, theoretical capacities were computed according to Eurocode 4, and a finite element analysis was conducted using ABAQUS software. The results showed that the behavior of lightweight filled steel tubes was similar to the normal weight filled tubes during the test; however, their capacities were lower compared to the normal weight filled tubes by a range of (1%-20%). Yet, lightweight filled steel tubes can achieve high axial loads. In addition, the axial capacity of all composite columns decreased with the increase of the column’s height and increased with the increase of both the cross-section and the steel thickness. Current code specifications of EC4 and the numerical results obtained from ABAQUS overestimated the capacities of the composite concrete-filled tubes by 3% and 14%, respectively; however, the EC4 was found to present close estimations to the experimental results.

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The authors would like to thank Deanship of Academic Research at The University of Jordan for their financial support to perform this research.

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