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Punching shear behavior of flat slabs strengthened with fiber reinforced polymer laminates
The present work reports the test results of seven full-scale reinforced concrete slab-column edge connections strengthened against punching shear using different methods. In this study, three slabs contained openings in the vicinity of the column, and the other four were without openings. The dimensions of the slabs were 1.540 x1.020 x120 mm with square columns (250 x 250 mm). The openings in the specimens were square (150 x 150mm) with the sides parallel to the sides of the column. The slabs were reinforced with an average reinforcement ratio of 0.75 %. Except for the two reference slabs, two different strengthening techniques were considered. Technique I applies externally bonded fiber reinforced polymer (FRP) flexible sheets on the slab around the column in two schemes with one or two layers of FRP sheets glued to the tension face or both tension and compression faces of the slab. Both glass and carbon FRP sheets were considered. Technique II applies externally bonded FRP sheets using either the first or second scheme combined with installing steel bolts through holes across the slab thickness around the column. Based on the test results, it is concluded that the presence of FRP sheets and steel bolts substantially increased the punching capacity of the connections. Code design expressions were conservative in predicting the experimental results.
Punching shear behavior of flat slabs strengthened with fiber reinforced polymer laminates
The present work reports the test results of seven full-scale reinforced concrete slab-column edge connections strengthened against punching shear using different methods. In this study, three slabs contained openings in the vicinity of the column, and the other four were without openings. The dimensions of the slabs were 1.540 x1.020 x120 mm with square columns (250 x 250 mm). The openings in the specimens were square (150 x 150mm) with the sides parallel to the sides of the column. The slabs were reinforced with an average reinforcement ratio of 0.75 %. Except for the two reference slabs, two different strengthening techniques were considered. Technique I applies externally bonded fiber reinforced polymer (FRP) flexible sheets on the slab around the column in two schemes with one or two layers of FRP sheets glued to the tension face or both tension and compression faces of the slab. Both glass and carbon FRP sheets were considered. Technique II applies externally bonded FRP sheets using either the first or second scheme combined with installing steel bolts through holes across the slab thickness around the column. Based on the test results, it is concluded that the presence of FRP sheets and steel bolts substantially increased the punching capacity of the connections. Code design expressions were conservative in predicting the experimental results.
Punching shear behavior of flat slabs strengthened with fiber reinforced polymer laminates
Stanz-Scher-Verhalten von mit faserverstärkten Kunststofflaminaten verstärkten, flachen Platten
El-Salakawy, Ehab (author) / Soudki, Khaled (author) / Polak, Maria Anna (author)
Journal of Composites for Construction ; 8 ; 384-392
2004
9 Seiten, 18 Bilder, 3 Tabellen, 18 Quellen
Article (Journal)
English
Stoßbeanspruchung , Scherbeanspruchung , Platte (Bauteil) , Verstärkung (Festigkeit) , Laminat , Verankerung (mechanische Befestigung) , Klebverbindung , Bolzenverbindung , glasfaserverstärkter Kunststoff , carbonfaserverstärkter Kunststoff , Verbindung von Werkstoffen , Pfeiler , Stahlbeton , Stanzen , Scherspannung , Kante , Plattenbauweise , Lochschere
Punching Shear Behavior of Flat Slabs Strengthened with Fiber Reinforced Polymer Laminates
| Online Contents | 2004
Punching Shear Behavior of Flat Slabs Strengthened with Fiber Reinforced Polymer Laminates
| British Library Online Contents | 2004
Punching Shear Behavior of Flat Slabs Reinforced with Glass Fiber-Reinforced Polymer Bars
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