کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
816163 906433 2015 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Punching strengthening of two-way slabs using external steel plates
ترجمه فارسی عنوان
تقویت پانچ اسلب دو طرفه با استفاده از صفحات فولادی خارجی
کلمات کلیدی
برش پانچ، صفحات بتن آرمه، تقویت، ورق های فولادی، ستون های برشی لنگر
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
چکیده انگلیسی

An experimental and analytical study on the punching strengthening of reinforced concrete two-way slabs using external steel plates is presented. Five reinforced concrete square slabs of 100 mm thickness were tested over simply supported four sides of 1000 mm span under central square patch load of 100 mm size up to failure. One control slab was tested without strengthening; however, four tested slabs were strengthened using four configurations of square steel plates provided with steel anchor shear studs. Such configurations considered two different plate thickness, two plate side dimensions and different arrangement and diameter of shear studs. The strengthened four slabs showed improved stiffness and punching shear capacity. The magnitude of improvement depended on the plate dimensions and the studs diameter and arrangement. An analytical approach was proposed for predicting the punching shear strength increase due to using the strengthening steel plate. The proposed approach was applied to the tested specimens with the use of the punching shear strength equations adopted by several codes of practice and proved to be in good agreement with the test results. Generally, this research presented a practical strengthening concept that can be used to increase the punching shear capacity of two-way slabs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Alexandria Engineering Journal - Volume 54, Issue 4, December 2015, Pages 1207–1218
نویسندگان
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