سلوك جسر من الكونكريت المسلح بمساند بسيطة مع حافة مفتوحة وبدون تصليح

Abstract

This study is an attempt to find out how the reinforced concrete beams with edge opening behave under the effect of shear forces. Eight simply supported reinforced concrete beams were tested under two point loads to measure the deflections, up to specific limit that is below collapse. After that the samples were repaired by steel plates of thickness of 0.5mm with dimensions (120×30mm).These plates were sticked on the concrete beams using epoxy. The repaired beam was retested, measuring deflection versus loads up the appearance of the first crack. Three of these beam samples were strengthened by steel plates sticked to the faces of their opening. The dimensions of those plates were (150×100×0.5mm). All results were compared with the results obtained from ANSYS 7.0 program. It was found that the results were acceptable and could be adopted to give a good view about the behavior of such samples.