International Journal of Geological and Geotechnical Engineering
Analytical study of CFST Columns at different Temperatures under Monotonic loading using Abaqus Software (CC & LWC infill)
Abstract
This paper presents, Behaviour of Conventional & Lightweight Concrete-Filled Steel Tube under monotonic loading at different temperatures is investigated using finite element method (Abaqus version 6.13.0.). The parameters chosen for the study are the geometry of the specimen – circular section, different L/D ratios, different grades of conventional & lightweight concrete infill and different temperatures (30°C, 60°C, 90°C, and 120°C). The study includes an analytical investigation into a total of 84 specimens that includes 12 hollow and 72 specimens filled with lightweight & conventional concrete of grades M20, M25, and M30. The specimens including three L/D ratio and having a common thickness, which is subjected to different elevated temperatures (30°C, 60°C, 90°C & 120°C) were obtained by conducting nonlinear analysis using ABAQUS software and compared with Euro code. The analytical results show that with an increase in temperature the load carrying capacity of CFST column decreases. The ultimate load carrying capacity is higher for conventional than lightweight concrete-filled tubes..References (10)
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