کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
259343 503632 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fatigue behavior of reinforced concrete beams strengthened with prestressed fiber reinforced polymer
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Fatigue behavior of reinforced concrete beams strengthened with prestressed fiber reinforced polymer
چکیده انگلیسی

A series of experiments were conducted to investigate the fatigue damage behavior of reinforced concrete (RC) beams strengthened with prestressed fiber reinforced polymer (FRP) under three-point bending. Based on the experimental results, the fatigue failure mechanism of the strengthened beams and the propagation process of the fatigue interface cracks were presented, and an empirical formula was developed to predict the fatigue lives of such members. Moreover, a theoretical method was proposed to quantify the dynamic flexural stiffness of the strengthened beams. Based on the flexural stiffness, a fatigue accumulative damage model was established to describe the fatigue fracture process of the strengthened beams. The results show that the theoretical model is in good agreement with the experimental data.


► We proposed a theoretical method to quantify the dynamic flexural stiffness of the strengthened beams.
► We established an effective fatigue accumulative damage model.
► The propagation of interface cracks experiences rapid, stable and unstable growth phase.
► We developed a simple empirical formula to predict the fatigue lives of strengthened beams.
► The fatigue strength of the beams is 215 MPa.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 27, Issue 1, February 2012, Pages 149–157
نویسندگان
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