09 فروردین 1403
سميه ملايي

سمیه ملایی

مرتبه علمی: استادیار
نشانی: آذربایجان شرقی / بناب / بزرگراه ولایت / دانشگاه بناب
تحصیلات: دکترای تخصصی / مهندسی عمران
تلفن: 04137745000
دانشکده: دانشکده فنی و مهندسی
گروه: گروه مهندسی عمران

مشخصات پژوهش

عنوان
Preparing Pressure-Impulse Diagrams for Reinforced Concrete Columns with Constant Axial Load using Single Degree of Freedom Approach
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Blast loading; Equivalent single degree of freedom; Pressure-impulse diagram; RC columns
پژوهشگران رمضان علی ایزدی فرد (نفر اول)، سمیه ملایی (نفر دوم)، محمد اسماعیل نیا عمران (نفر سوم)

چکیده

In this paper, moment-curvature behavior of reinforced concrete column with constant axial load is determined using finite element method and then it is introduced to a single degree of freedom (SDOF) model based on EulerBernoulli theory. Using this SDOF model, dynamic response of the RC column under the blast loading is estimated. The introduced SDOF includes secondary moments (P-δ) effects, nonlinear behavior of the material and effects of strain rate on concrete and steel materials through the time calculation of the model. Results obtained from SDOF model for transverse displacement of RC column under blast loading is compared to analysis by finite element software OPENSEES. Then, introduced SDOF method is used for drawing Pressure-Impulse (P-I) diagram of the column with considering the presence of axial compressive load. According to the results, introduced SDOF model has simple and quick computations and accuracy of predictions is acceptable.