Concrete slab construction having a joining element made of concrete for joining concrete slabs together, and method for producing a concrete slab construction

Abstract

The present invention relates to a concrete slab construction (14) comprising at least one concrete slab (2, 2′) and at least one joining element (1) made of concrete for joining concrete slabs (2, 2′) and for fastening in or on a concrete slab (2, 2′). The joining element (1) has a joining body with an upper section and a lower section, and a cross-section of the joining body has at least one notch or bulge between the upper section and the lower section on one side, and in particular also on the other side. The concrete slab (2, 2′) has, along its lateral circumference and/or in a recess (15) between the top side and bottom side, at least one similarly shaped bulge (20, 20′) or notch corresponding to the joining element (1). In a gap between the recess (15) in the concrete slab (2, 2′) or between the two concrete slabs (2, 2′) and the joining element (1) there is a filling material. In addition, a method for producing a concrete slab construction with the help of a joining element, a method for producing a joining element, a method for producing a concrete slab for the concrete slab construction, and a use of the joining element and the concrete slab construction are proposed.

1 . A concrete slab construction ( 14 ) comprising:
 at least one concrete slab ( 2 ); and   at least one joining element ( 1 ) made of concrete for joining concrete slabs ( 2 ,  2 ′) and/or for fastening to a concrete slab ( 2 ),   wherein the joining element ( 1 ) has a joining body ( 3 ) with an upper section ( 4 ) and a lower section ( 5 ), and a cross-section of the joining body ( 3 ) between the upper section ( 4 ) and the lower section ( 5 ) on one side ( 6 ) and on the opposite side ( 7 ) each has at least one notch ( 8 ,  8 ′) or bulge ( 9 ,  9 ′), wherein the notch ( 8 ,  8 ′) or bulge ( 9 ,  9 ′) has two tapering or wedge-shaped flanks ( 11 ,  11 ′), wherein the two flanks ( 11 ,  11 ′) form an obtuse or acute angle (φ) and wherein there is at least one bulge ( 20 ) or notch ( 21 ) along a lateral circumference of the concrete slab ( 2 ) between an top side ( 16 ) and a bottom side ( 17 ) of the concrete slab ( 2 ), wherein the bulge ( 20 ) or notch ( 21 ) has two tapering or wedge-shaped flanks ( 22 ), and the joining element ( 1 ) is arranged on the lateral circumference of the concrete slab ( 2 ), wherein the notch ( 8 ,  8 ′) or bulge ( 9 ,  9 ′) on one side of the joining element ( 1 ) and the bulge ( 20 ) or notch ( 21 ) of the concrete slab ( 2 ) are opposite each other, and wherein there is a filling material ( 25 ) in a gap ( 24 ) between the concrete slab ( 2 ) and the joining element ( 1 ), wherein the filling material ( 25 ) is, for example, mortar or an adhesive.   
     
     
         2 . A concrete slab construction ( 14 ) comprising:
 at least one concrete slab ( 2 ), and   at least one joining element ( 1 ) made of concrete, for joining concrete slabs ( 2 ,  2 ′) and/or for fastening in a concrete slab ( 2 ),   wherein the joining element ( 1 ) has a joining element ( 3 ) with an upper section ( 4 ) and a lower section ( 5 ), and a cross-section of the joining body ( 3 ) between the upper section ( 4 ) and the lower section ( 5 ) on one side ( 6 ), and also on another side ( 7 ), has at least one notch ( 8 ,  8 ′) or bulge ( 9 ,  9 ′), wherein the notch ( 8 ,  8 ′) or bulge ( 9 ,  9 ′) in particular has two wedge-shaped flanks ( 11 ,  11 ′) tapering to a tip ( 10 ), wherein the two flanks ( 11 ,  11 ′) form an obtuse or acute angle (q) and wherein the concrete slab ( 2 ) has at least one recess ( 15 ), a cross-section of the recess ( 15 ) between an top side ( 16 ) and a bottom side ( 17 ) of the concrete slab ( 2 ) on one side ( 18 ), and also on another side ( 19 ), has at least one bulge ( 20 ,  20 ′) or notch ( 21 ,  21 ′), wherein the bulge ( 20 ,  20 ′) or notch ( 21 ,  21 ′) has two wedge-shaped flanks ( 23 ,  23 ′), and wherein the joining element ( 1 ) is arranged in the recess ( 15 ), with the respective notch ( 8 ,  8 ′) or bulge ( 9 ,  9 ′) of the joining element ( 1 ) opposing the respective bulge ( 20 ,  20 ′) or notch ( 21 ,  21 ′) of the recess ( 15 ), and wherein there is a filler or filling material ( 25 ) in a gap ( 24 ) between the recess ( 15 ) and the joining element ( 1 ), wherein, the filler or filling material ( 25 ) is for example at least one fitting piece, such as a wedge, or mortar, sand or an adhesive.   
     
     
         3 . A concrete slab construction ( 14 ) comprising:
 at least two concrete slabs ( 2 ,  2 ′), and   at least one joining element ( 1 ) made of concrete for joining concrete slabs ( 2 ,  2 ′) and/or for fastening to a concrete slab ( 2 ),   wherein the joining element ( 1 ) has a joining body ( 3 ) with an upper section ( 4 ) and a lower section ( 5 ), and a cross-section of the joining body ( 3 ) between the upper section ( 4 ) and the lower section ( 5 ) on one side ( 6 ) and on the opposite side ( 7 ) each has at least one notch ( 8 ,  8 ′) or bulge ( 9 ,  9 ′), wherein the notch ( 8 ,  8 ′) or bulge ( 9 ,  9 ′) has two wedge-shaped flanks ( 11 ,  11 ′) tapering to a tip ( 10 ), wherein the two flanks ( 11 ,  11 ′) form an obtuse or acute angle (φ) and wherein there is at least one bulge ( 20 ,  20 ′) or notch ( 21 ,  21 ′) along a lateral circumference of the concrete slabs ( 2 ,  2 ′) between a top side ( 16 ) and a bottom side ( 17 ) of the concrete slabs ( 2 ,  2 ′), wherein the bulge ( 20 ,  20 ′) or notch ( 21 ,  21 ′) has two wedge-shaped flanks ( 23 ,  23 ′), and wherein the joining element ( 1 ) is arranged between the two concrete slabs ( 2 ,  2 ′) in a recess ( 15 ), wherein the respective notch ( 8 ,  8 ′) or bulge ( 9 ,  9 ′) of the joining element ( 1 ) oppose the respective bulge ( 20 ,  20 ′) or notch ( 21 ,  21 ′) of the concrete slabs ( 2 ,  2 ′), and wherein there is a filler or filling material ( 25 ) in a gap ( 24 ) between the concrete slabs ( 2 ,  2 ′) and the joining element ( 1 ), wherein the filler or filling material ( 25 ) is for example, at least one fitting piece, such as a wedge, or mortar or sand or an adhesive.   
     
     
         4 . The concrete slab construction ( 14 ) according to  claim 2 , wherein the recess ( 15 ) is at least as wide as the width (B) of the joining element ( 1 ) or joining body ( 3 ). 
     
     
         5 . The concrete slab construction ( 14 ) according to  claim 2 , wherein the recess ( 15 ) runs continuously through the concrete slab ( 2 ,  2 ′) or the recess ( 15 ) only partially runs into the concrete slab ( 2 ,  2 ′). 
     
     
         6 . The concrete slab construction ( 14 ) according to  claim 1 , wherein the two flanks ( 11 ,  11 ′) of the notch ( 8 ,  8 ′) or bulge ( 9 ,  9 ′) of the joining element ( 1 ) and the two flanks ( 23 ,  23 ′) of the bulge ( 20 ,  20 ′) or notch ( 21 ,  21 ′) in or on the concrete slab ( 2 ,  2 ′) are opposite each other, and wherein one flank ( 23 ,  23 ′) of the bulge ( 20 ,  20 ′) or notch ( 21 ,  21 ′) in or on the concrete slab ( 2 ,  2 ′) originates from one upper side of the concrete slab ( 2 ,  2 ′) and the other flank ( 23 ′,  23 ) originates from a lower side of the concrete slab ( 2 ,  2 ′), wherein these two flanks ( 21 ,  21 ′) of the bulge ( 20 ,  20 ′) or notch ( 21 ,  21 ′) form an obtuse or acute angle (φ′). 
     
     
         7 . The concrete slab construction ( 14 ) according to  claim 1 , wherein the joining element ( 1 ) is an integral part of a concrete slab ( 2 ,  2 ′) formed at a lateral circumference of the concrete slab ( 2 ,  2 ′) in one piece with the concrete slab ( 2 ,  2 ′). 
     
     
         8 . The concrete slab construction ( 14 ) according to  claim 1 , wherein at least one notch ( 8 ,  8 ′) or bulge ( 9 ,  9 ′) is at least partially located within the top side ( 16 ) and the bottom side ( 17 ), of the concrete slab(s) ( 2 ,  2 ′). 
     
     
         9 . The concrete slab construction ( 14 ) according to  claim 1 , wherein a cross-section of the joining element ( 3 ) between a top side ( 4 ) and a bottom side ( 5 ) is hourglass-shaped. 
     
     
         10 . The concrete slab construction ( 14 ) according to  claim 1 , wherein the notch ( 8 ) or bulge ( 9 ) of the joining element ( 1 ) on one side ( 6 ) and the notch ( 8 ′) or bulge ( 9 ′) on the opposite side ( 7 ) of the joining element ( 1 ) are uniform. 
     
     
         11 . The concrete slab construction ( 14 ) according to  claim 1 , wherein the notch ( 8 ,  8 ′) or bulge ( 9 ,  9 ′) of the joining element ( 1 ) has an upper flank ( 11 ) and a lower flank ( 11 ′). 
     
     
         12 . The concrete slab construction ( 14 ) according to  claim 1 , wherein a height (H) of the joining element ( 3 ) between the upper section ( 4 ) and the lower section ( 5 ) or between the top side ( 4 ) and the bottom side ( 5 ) is in a range from 2 cm to 10 cm, and/or wherein a width (B) of the joining element ( 3 ) between one side ( 6 ) and the opposite side ( 7 ) is in a range from 2 cm to 10 cm. 
     
     
         13 . The concrete slab construction ( 14 ) according to  claim 1 , wherein a length (L) of the joining element ( 1 ) lies in a range from 5 cm to 20 m. 
     
     
         14 . The concrete slab construction ( 14 ) according to  claim 1 , wherein the joining element ( 3 ) has an extension ( 12 ,  12 ′) at the upper section ( 4 ) or at the top side ( 4 ) and/or at the lower section ( 5 ) or at the bottom side ( 5 ), wherein the extension ( 12 ,  12 ′) is formed as a coupling element for coupling with another component. 
     
     
         15 . The concrete slab construction ( 14 ) according to  claim 14 , wherein a further joining body ( 3 ′) is arranged at the extension ( 12 ,  12 ′), and the further joining body ( 3 ′) and the extension ( 12 ,  12 ′) are formed together in one piece. 
     
     
         16 . The concrete slab construction ( 14 ) according to  claim 1 , wherein the joining element ( 3 ) between the upper section ( 4 ) or the top side ( 4 ) and the lower section ( 5 ) or the bottom side ( 5 ) on at least one side ( 6 ) has at least one further notch ( 8 ″,  8 ″) or at least one further bulge ( 9 ″,  9 ′″). 
     
     
         17 . The concrete slab construction ( 14 ) according to  claim 1 , wherein the joining element ( 1 ) has a reinforcement ( 13 ), wherein the reinforcement ( 13 ) is essentially perpendicular to the top side ( 4 ) and bottom side ( 5 ). 
     
     
         18 . The concrete slab construction ( 14 ) according to  claim 2 , wherein a connecting element ( 27 ) is arranged at or in the top side ( 16 ) and/or the bottom side ( 17 ) of the concrete slab(s) ( 2 ,  2 ′) wherein the connecting element ( 27 ) is connected to the concrete slab ( 2 ) or the two concrete slabs ( 2 ,  2 ′), and wherein the connecting element ( 27 ) is particularly suitable for absorbing tensile forces. 
     
     
         19 . The concrete slab construction ( 14 ) according to  claim 2 , wherein several joining elements ( 1 ) are arranged along a straight line at intervals in the concrete slab ( 2 ) or between the concrete slabs ( 2 ,  2 ′). 
     
     
         20 . The concrete slab construction ( 14 ) according to  claim 2 , wherein several joining elements ( 1 ) are arranged along a serpentine line or a zigzag line at intervals in the concrete slab ( 2 ) or between the concrete slabs ( 2 ,  2 ′), wherein the serpentine line is composed in particular of curved sections and the zigzag line is composed in particular of straight sections. 
     
     
         21 . The concrete slab construction ( 14 ) according to  claim 19 , wherein joining bodies ( 3 ) both with and without extension ( 12 ,  12 ′) are arranged in the concrete slab ( 2 ) or between the concrete slabs ( 2 ,  2 ′). 
     
     
         22 . The concrete slab construction ( 14 ) according to  claim 15 , wherein the joining element ( 1 ) is located between two spaced apart stacked concrete slabs ( 2 ,  2 ′), wherein the two concrete slabs ( 2 ,  2 ′) are connected to each other or supported on each other by means of the joining element ( 1 ). 
     
     
         23 . The concrete slab construction ( 14 ) according to  claim 22 , wherein the two stacked concrete slabs ( 2 ,  2 ′) are staggered against each other. 
     
     
         24 . The concrete slab construction ( 14 ) according to  claim 22 , wherein some of the recesses ( 15 ) do not run completely continuously through the concrete slab ( 2 ) or through the concrete slabs ( 2 ,  2 ′), and that some of the recesses ( 15 ) run completely continuously through the concrete slab ( 2 ) or the concrete slabs ( 2 ,  2 ′), wherein there is at least one non-continuous recess ( 15 ) between two continuous recesses ( 15 ). 
     
     
         25 . The concrete slab construction ( 14 ) according to  claim 2 , wherein the concrete slab construction ( 14 ) is a concrete slab element or a concrete slab comprising several concrete slab elements or a bridge element or a concrete bridge comprising several bridge elements. 
     
     
         26 - 44 . (canceled)