کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
267919 504420 2010 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Seismic strengthening of rectangular reinforced concrete columns using fiber reinforced polymers
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
Seismic strengthening of rectangular reinforced concrete columns using fiber reinforced polymers
چکیده انگلیسی

In recent years, fiber-reinforced polymers have been widely utilized to improve the seismic performance of deficient RC columns. In this study, the flexural behavior of CFRP strengthened rectangular RC columns with plain bars and insufficient confining steel was investigated. Five specimens, representing a typical deficient building column with poor transverse reinforcement detailing and low concrete strength, were tested under cyclic displacement excursions and constant axial load. The beneficial effect of CFRP anchor dowels and the FRP confinement ratio on the ultimate drift ratio of the specimens was assessed. It was found that an increase in the confinement ratio enabled the column to sustain higher ultimate drift capacities for the strengthened columns. Furthermore, an appropriate configuration of CFRP anchor dowels resulted in a better seismic behavior compared to the CFRP retrofitted column without any dowels. Subsequently, a simplified drift based design equation was proposed for FRP retrofit design of deficient rectangular columns.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 32, Issue 4, April 2010, Pages 964–973
نویسندگان
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