punching shear reinforcement system
sourceHangzhou Jiaxiang
publisherJay
time2014/04/04
- punching shear reinforcement system cosist of double-ended studsThe Punching and Shear Reinforcement is used in reinforced concrete floor slabs that are cast directly onto columns or walls without supporting beams.
Punching shear is a phenomenon in flat slabs caused by concentrated support reactions inducing a cone shaped perforation starting from the top surface of the slab. Although generally preceded by flexural failure, punching shear is a brittle failure mode and the risk of progressive collapse requires a higher safety class in structural design. The Punching and Shear Reinforcement is used in reinforced concrete floor slabs that are cast directly onto columns or walls without supporting beams.
They are available as 2-stud and 3-stud elements which can be combined into larger assemblies with the appropriate arrangement. The symmetrical arrangement anchor guarantees the correct installation. The patented clip bar ensures that the heads of the studs are covered by concrete.
The punching shear reinforcement system consists of double headed anchors (B500 ribbed or smooth) with swaged heads. A mounting bar that is secured by tack welds on the anchor heads, connects the individual anchors to the rail. it can have up to 10 anchors, which are preferably used from the top for laying the surface reinforcement. By arranging the individual elements in rows, large areas can be quickly reinforced.
- Stud diameters 10 to 25 mm
- Complete elements are manufactured to measure with 4 till 10 double headed studs
- Individual distances of the studs possible for the adjustment to the reinforcement grid
- Officially approved (DIBt Berlin) for all structures with shear loads
- Spacers available for concrete cover thicknesses from 15 to 45 mm
