الفهرس 
PREVIOUS STUDIES ON THE ARCHED BEAMOnly 14 pages are availabe for public view
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Abstract
The behavior of perforated concrete arched beams with web openings is an
important issue owing to the developed discontinuity regions due to the abrupt
change in the beams` cross-section.These openings interrupt the loading trajectories and may defect the structural performance of the beam due to the presence of weak points around the openings. The main purpose of this study is to investigate the effect of providing web openings on the structural
behavior of reinforced concrete arched beams. The experimental investigation
included nine self-compacted perforated arched beams with web openings as
well as one straight solid control beam and one arched solid control beam. All
arched beams were tested under the effect of concentrated quasi-static loads. The test factors comprised the perforation size, shape, and reinforcing
arrangement. Besides, a numerical study of the perforated arched beams was conducted using the ABAQUS program. It was found that arched beams had a greater ultimate capacity than straight beams; However, depending on the size and shape of the perforations, the strength gain caused by the arching
effect was greatly reduced. Also, the experimental results, including the modes of failure, were compared to those obtained from the numerical study. The
mode of failure, ultimate capacity, and the mid-span deflection obtained from
both numerical and experimental results were in good agreement. A parametric study was carried out using the finite element method to study the effect of the rises on the arched beams and the effect of change in reinforced diameters around the openings. Based on the numerical analysis, the most preferable rise of the arched beam was extracted.