کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6725552 | 503614 | 2013 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of temperature on mechanical properties of pre-damaged steel reinforcing bars
ترجمه فارسی عنوان
اثر دما بر خواص مکانیکی میله های تقویت شده فولاد قبل از آسیب دیده
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کلمات کلیدی
سطح قبل از آسیب، درجه حرارت بالا، آتش سوزی پس از زلزله، خواص مکانیکی باقی مانده، سناریوی آتش سوزی پس از زلزله،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
The effect of simulated earthquake-induced damage on the residual mechanical properties of steel bars exposed to elevated temperatures are reported towards understanding the behaviour of such bars in a fire-following-earthquake scenario. Earthquake damage was simulated by inducing two levels of tensile strains in the rebars corresponding to the desired levels of pre-damage. Subsequently, the pre-damaged rebars were tested for residual strength in tension after exposure to a single cycle of heating and cooling for different target temperatures ranging from room temperature to 800 °C. The other variables in the investigation were: yield strength, rebar diameter and the rebar manufacturing process (cold-worked or thermo-mechanically treated). It was observed across all the rebars of this study that the selected pre-damage levels had practically no influence on residual mechanical properties and the effect of heating the rebars was significant only for temperatures greater than or equal to 400 °C. The findings of this investigation have implications for prediction of residual capacity of reinforced concrete structures exposed to fire-following-earthquake scenarios.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 46, September 2013, Pages 19-27
Journal: Construction and Building Materials - Volume 46, September 2013, Pages 19-27
نویسندگان
Virendra Kumar, Umesh Kumar Sharma, Bhupinder Singh, Pradeep Bhargava,