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| dc.contributor.author | BITANIA, SEWNET TEGEGNE | |
| dc.date.accessioned | 2022-03-01T07:30:52Z | |
| dc.date.available | 2022-03-01T07:30:52Z | |
| dc.date.issued | 2021-10-01 | |
| dc.identifier.uri | http://ir.bdu.edu.et/handle/123456789/13090 | |
| dc.description.abstract | Hollow core fiber reinforced polymer concrete steel composite column is structural element which have a concrete shell encased between fiber reinforced polymer tube on the outer surface and steel tube in the inside surface. The column offers high strength to weight ratio and good structural performance than solid reinforced column and superior environmental resistance than steel tube encased hollow core columns. This study had considered those variables that have effect on the behavior of the column but are not studied in the past. It numerically investigates the structural behavior of the column under combined axial and lateral loading. The column has circular cross-section with the outer fiber tube truncated at the top of the footing while the inner steel tube is embedded in the footing. Experimental result reported in the literature was used for validating the finite element model analyzed using ANSYS nonlinear finite element software program. The column was modeled as a cantilever column. Then, parametric studies on influential variables such as the effect of embedding the FRP tube in the footing, the effect of changing the configuration of the two tubes i.e. steel vs. FRP tubes, the effect of tapering the thickness of the two tubes throughout the height o f the column and the effect of steel tube yield strength was conducted to get insight in to the structural performance of the column. Finite element analysis results indicated application of both external and/or internal surfaces with steel tubes and/or fiber reinforced polymer affected structural performance of the column. The hollow core column having concrete shell encased between two steel tubes showed 108% and 12% higher in initial stiffness and moment capacity than hollow core column having concrete shell encased with fiber reinforced polymer from outside and steel tube from inside. Decreasing the average thickness of both steel and FRP tubes by 25% above the column-footing connection showed same moment capacity with the column having uniform thickness. Additionally, increasing yield strength of the steel tube from 310MPa to 586MPa raised the moment capacity of the column by 24.4%. Keywords: Hollow core column, composite column, Finite element analysis, steel encasing, FRP tube | en_US |
| dc.language.iso | en_US | en_US |
| dc.subject | CIVIL AND WATER RESOURCE ENGINEERING | en_US |
| dc.title | NUMERICAL STUDY ON HOLLOW CORE FIBER REINFORCED POLYMER-CONCRETE-STEEL COMPOSITE COLUMN | en_US |
| dc.type | Thesis | en_US |
