کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
269181 504461 2006 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Residual area method for heat transfer analysis of concrete-encased I-sections in fire
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
Residual area method for heat transfer analysis of concrete-encased I-sections in fire
چکیده انگلیسی

A design concept called the residual area method is proposed to calculate the equivalent thickness of concrete for temperature analysis of concrete-encased I-sections in fire. The design of the equivalent concrete thickness is based on a regression analysis which is verified by experimental results. The significance of the coefficients of the regression analysis is assessed through statistical means (R2R2 values and F-tests), and shown to be reasonably satisfactory. The steel temperature response of concrete-encased I-sections subjected to fire is characterized by three temperature variables. The proposed method makes use of the EC 3 provisions to formulate the temperature response of each representative point along the steel profile using a 1D heat transfer model. Apart from standard fire conditions, the proposed method is applied to concrete-encased I-sections exposed to hydrocarbon, external and parametric fire curves. The results demonstrate that the residual area method is intrinsic to the geometric configurations (cross sections) of concrete-encased I-sections, but independent of heating conditions. The proposed method has been further verified by three series of specimens, and the predictions are compared against the results obtained from finite element analysis.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 28, Issue 3, February 2006, Pages 411–422
نویسندگان
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