Connecting Device

Abstract

A connecting device ( 1 ) for the shear-force connection of concrete components ( 20 ), in particular prefabricated concrete components, comprises: an elongate protective box ( 2 ) for fitting in an end face ( 20′ ) of the components ( 20 ), which comprises a bottom ( 5 ) and at least two side walls ( 6 ) extending in a longitudinal direction of the bottom; at least one flexible reinforcing loop element ( 3 ) which can be accommodated in the protective box ( 2 ) and can be moved out of the latter; characterized in that the bottom ( 5 ) has a bottom profiling with groups of bottom projections ( 7 ) and bottom depressions ( 7′ ) alternating in the longitudinal direction, wherein each group has at least one bottom projection ( 7 ) or at least one bottom depression ( 7′ ).

1 . A connecting device for a shear-force-transmitting connection of concrete parts, comprising:
 an elongated storage box to be inserted in an end face of a concrete part, the storage box having a bottom and at least two side walls extending in a longitudinal direction of the bottom,   at least one flexible reinforcing loop element that can be accommodated in the storage box and moved out of the storage box,   wherein the bottom has a bottom profiling with groups of bottom projections and bottom depressions originating from the bottom and alternating in the longitudinal direction, each group having at least one bottom projection or at least one bottom depression.   
   
   
       2 . The connecting device according to  claim 1 , wherein the bottom projections and bottom depressions each have a maximum height, a total height of the bottom projections and bottom depressions of adjacent groups defining a total depth of interlock that is in a range between approximately 3 mm and approximately 9 mm. 
   
   
       3 . The connecting device according to  claim 1 , wherein the bottom projections and the bottom depressions have substantially a same height. 
   
   
       4 . The connecting device according to  claim 1 , wherein each side walls has a wall profiling with groups of wall projections and wall depressions alternating in the longitudinal direction, each group having at least one wall projection or at least one wall depression. 
   
   
       5 . The connecting device according to  claim 4 , wherein the wall projections and wall depressions each have a maximum height, the total height of the wall projections and wall depressions of adjacent groups defining a total depth of interlock that is in a range between approximately 2 mm and approximately 6 mm. 
   
   
       6 . The connecting device according to  claim 4 , wherein the wall projections and wall depressions are substantially a same height. 
   
   
       7 . The connecting device according to  claim 1 , wherein the bottom profiling and/or wall profiling follows an undulated or serrated path. 
   
   
       8 . The connecting device according to  claim 1 , wherein the bottom projections and/or bottom depressions are configured in a trapezoidal manner and comprise flanks that are aligned substantially perpendicular to the bottom. 
   
   
       9 . The connecting device according to  claim 1 , wherein the wall projections and wall depressions have a lower anchoring resistance in concrete in a direction perpendicular to the bottom than in a different direction. 
   
   
       10 . The connecting device according to  claim 9 , wherein the wall projections and wall depressions have an elongated form that extends substantially perpendicular to the bottom and preferably tapers in the direction extending away from the bottom. 
   
   
       11 . The connecting device according to  claim 1 , wherein the bottom projections and bottom depressions and wall projections and wall depressions of adjacent groups are separated by a narrow intermediate surface. 
   
   
       12 . The connecting device according to  claim 1 , wherein the storage box is constructed and arranged whereby two opposite storage boxes when each is inserted in a corresponding concrete part form a small casting joint, with the casting joint accommodating the respective flexible reinforcing loop element in a folded-out state, including a tolerance zone. 
   
   
       13 . The connecting device according to  claim 1 , wherein the bottom projections and bottom depressions and wall projections and wall depressions of adjacent groups directly follow one another.