کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6480632 1428759 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Two models for evaluating the bond behavior in pre- and post-yield phases of reinforced concrete
ترجمه فارسی عنوان
دو مدل برای ارزیابی رفتار پیوند در مراحل قبل و بعد از تولید بتن مسلح
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی


- The mean bond stress model, associated with steel strain level, is developed to simply predict bond characteristics in pre- and post-yield phases.
- The bond-strain model is presented to describe the bond behavior in terms of reinforcement strain.
- The mean bond stresses representing bond behavior in several characteristic phases of reinforced concrete members are suggested.

The performance and behavior of reinforced concrete structures at serviceability limit state and at ultimate limit state highly rely on the bond interaction between reinforcement and surrounding concrete; therefore a proper evaluation regarding the bond behavior under corresponding state is particularly critical. However, it is not easy to implement the common bond models, characterized by nonlinearity and affiliated with the variable of slip, into practical design and analysis. In this paper, the mean bond stress model associated with steel strain (stress) level and the bond-strain model representing the relationship between bond stress and reinforcement strain are developed to simplify and improve the normal analysis on bond behavior in pre- and post-yield phases. Compared with the results of some well-known experimental campaigns, the proposed models indicate a good agreement with the bond behavior at pre- and post-yield stages. Finally, a thorough discussion about the values of mean bond stresses is carried out; the suggested values considering bond characteristics in several phases of reinforced concrete members are presented by a series of analytical parametric studies on test results in the literature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 147, 30 August 2017, Pages 847-857
نویسندگان
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