Reinforcement element for absorbing forces of concrete slabs in the area of support elements

Abstract

A reinforcement element for absorbing forces of the concrete slabs to be supported in the area of support elements is formed from a longitudinally stable, flexible length element, its first end area being guided through a first flexural reinforcement layer of the concrete slab. The first area adjoining the first end area extends towards a second flexural reinforcement layer of the concrete slab at an acute angle α. The second area adjoining the first area is guided through the second flexural reinforcement layer and extends in the area of the support element along the surface of the second flexural reinforcement layer facing away from the support element. The second end area of the reinforcement element is guided through the second flexural reinforcement layer toward the first flexural reinforcement layer. This reinforcement element can be inserted into the concrete slab in many different ways according to the type of load.

1 . A reinforcement element for absorbing forces of concrete slabs in the area of support elements, in particular supports and bearing walls, such slab being equipped with a first flexural reinforcement layer, located adjacent to the support element, and a second flexural reinforcement layer, facing away from the support element, wherein each flexural reinforcement layer is formed essentially by longitudinally and laterally extending reinforcing bars, a number of reinforcement elements being inserted between such flexural reinforcement layers, wherein each reinforcement element is formed out of a longitudinally stable, flexible length element, wherein its first end area is guided through the first flexural reinforcement layer, the first area of such stable, flexible length element that is adjoining the first end area proceeding at an acute angle α towards the second flexural reinforcement layer, the second area that is adjoining the first area being guided through the second flexural reinforcement layer and proceeding, in the area of the support element, along the surface of the second flexural reinforcement layer, which is facing away from the support element, and the second end area of such stable, flexible length element being guided through the second flexural reinforcement layer towards the first flexural reinforcement layer. 
     
     
         2 . A reinforcement element in accordance with  claim 1 , wherein the longitudinally stable, flexible length element has the form of a band, its width being a multiple of its thickness, and which can be brought to the desired length. 
     
     
         3 . A reinforcement element in accordance with  claim 1 , wherein several longitudinally and laterally extending reinforcement elements, essentially all parallel to the corresponding longitudinally and laterally extending reinforcing bars of the first flexural reinforcement layer and the second flexural reinforcement layer, are inserted into the concrete slab. 
     
     
         4 . A reinforcement element in accordance with  claim 1 , wherein the reinforcement elements are inserted into the concrete slab in multiple layers. 
     
     
         5 . A reinforcement element in accordance with  claim 4 , wherein the first end areas and the second end areas and/or the first areas of the reinforcement elements that are inserted into the concrete slab in multiple layers are arranged in a manner in which they extend towards or away from each other. 
     
     
         6 . A reinforcement element in accordance with  claim 1 , wherein the angle α is in the range of 20° to 50°. 
     
     
         7 . A reinforcement element in accordance with  claim 1 , wherein the longitudinally stable, flexible length element is formed out of carbon fibre reinforced plastic. 
     
     
         8 . A reinforcement element in accordance with  claim 1 , wherein the second end area is guided into the first flexural reinforcement layer according to the first end area for width support elements of the concrete slab to be supported. 
     
     
         9 . A reinforcement element in accordance with  claim 8 , wherein the end areas are each guided around at least one reinforcing bar of the first flexural reinforcement layer, such reinforcing bar extending laterally to the reinforcement element, and the second area is guided across the corresponding, laterally extending reinforcing bars of the second flexural reinforcement layer. 
     
     
         10 . A reinforcement element in accordance with  claim 1 , wherein the second end area is guided to the first flexural reinforcement layer for edge supports of the concrete slab to be supported. 
     
     
         11 . A reinforcement element in accordance with  claim 1 , wherein at least one of the end areas is looped across multiple laterally extending reinforcing bars of the first flexural reinforcement layer. 
     
     
         12 . A reinforcement element in accordance with  claim 1 , wherein the end areas of the reinforcement elements are equipped with anchoring means. 
     
     
         13 . A reinforcement element in accordance with  claim 1 , wherein saddle elements are fitted on the laterally extending reinforcing bars around which the reinforcement elements are diverted. 
     
     
         14 . A reinforcement element in accordance with  claim 1 , wherein the reinforcement element can be inserted in existing slabs in the area of support elements, whereby drill holes can be applied to the slab to be reinforced, though which the respective reinforcement element can be inserted, and the drill holes can be filled and the end areas can be held with anchoring elements. 
     
     
         15 . A reinforcement element in accordance with  claim 14 , wherein in the area of the redirections of the reinforcement element, saddle elements are inserted into the drill holes, the reinforcement elements are supported on such saddle elements.