کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6778989 513545 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Composite action of hexagonal concrete-filled steel tubular stub columns under axial loading
ترجمه فارسی عنوان
عمل کامپوزیتی ستونهای فولادی شش ضلعی تحت بار محوری
کلمات کلیدی
شش ضلعی، ستون های خالی لوله های بتنی پر از لوله، ظرفیت تحمل نهایی، نسبت فشار، اثر گنجاندن،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
Four groups of axial compression tests on hexagonal CFT stub columns have been carried out aiming to investigate the effects of the concrete strength and steel ratio on the behaviour of hexagonal CFT stub columns. Studies on parametric analysis and composite action between core concrete and steel tube have been carried out using FE modelling which had been benchmarked using the test data. Based on the essential data obtained in this paper, the ratio of axial stress-yield strength of steel tube was determined at the ultimate state. The stress contour of core concrete was simplified to an unconfined area without constraint and a confined area with uniform constraint imposed by hexagonal steel tube. Eventually, a practical design equation of the ultimate bearing capacity of hexagonal CFT stub columns was proposed based on the superposition principle. An excellent agreement between the proposed equation and the experimental results was observed, with an average ratio of predicted to measured capacity of 1.08 and a standard deviation of 0.05.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin-Walled Structures - Volume 107, October 2016, Pages 502-513
نویسندگان
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