کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4920493 1429091 2017 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling thermo-mechanical behavior of concrete-filled steel tube columns with solid steel core subjected to fire
ترجمه فارسی عنوان
مدل سازی رفتار حرارتی مکانیکی ستون های لوله فولادی پر شده با بتن با هسته فولادی جامد تحت آتش است
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
Concrete-filled steel tube columns with solid steel core are increasingly used in high-rise building practice due to their high load-bearing capacity and exceptional structural fire behavior. Simulating the structural fire behavior of these innovative composite columns by means of advanced numerical models is a promising tool to achieve an enhanced understanding of the basic thermo-mechanical behavior observed in costly full-scale fire tests, and eventually, to partially replace them. Moreover, the data necessary for the development of a simplified fire design method can be compiled from a parametric study with such models. This paper presents an advanced nonlinear Finite-Element-Method model that incorporates complex experimental calibration data and therefore can robustly simulate various full-scale fire tests of this type of composite columns. Furthermore, tracking in the model the load share redistribution processes between the different components, confirms the innovative design concept of the structural fire behavior of this type of composite column. Finally, a simplified model version that qualifies for partial replacement of full-scale fire tests or use in both a parametric study and advanced structural design is presented and conditionally validated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 136, 1 April 2017, Pages 180-193
نویسندگان
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