Core-Insulated Pre-Fabricated Wall Piece With Connector Pins

Abstract

The invention relates to a pre-fabricated wall piece ( 1 ) for the construction of buildings, comprising an inner wall ( 4 ) and an outer wall ( 3 ) made from concrete, connected to each other by means of reinforcements ( 2 ) and with a cavity ( 5 ) between both walls ( 3, 4 ) for subsequent filling with concrete. The inner side ( 6 ) of the outside wall ( 3 ) facing the inner wall ( 4 ) further comprises a thermal insulation layer ( 8 ) for reduction of the heat transfer between the walls ( 3, 4 ). The pre-fabricated wall piece is characterized in that the reinforcement ( 2 ) connecting the outer wall ( 3 ) and the inner wall ( 4 ) comprises U-shaped connector pins made from steel, retained by the web thereof in the outer wall ( 3 ), and a lattice-beam reinforcement ( 9 ) that projects into the cavity ( 5 ) from the inner side ( 7 ) of the inner wall ( 4 ) facing the outer wall ( 3 ). Said pre-fabricated wall piece ( 1 ) has the advantage that it has fewer heat bridges for a reduced heat transfer between the inner wall and the outer wall ( 4, 3 ) and that it is simple and economical to produce.

1 . A pre-fabricated wall piece for the construction of buildings, comprising an inner wall and an outer wall made from concrete, connected to each other by means of reinforcements and with a cavity between both walls for subsequent filling with concrete, where the inner side of the outside wall facing the inner wall further comprises a thermal insulation layer, wherein the reinforcement connecting the outer wall and the inner wall comprises U-shaped connector pins made from steel, retained by the web thereof in the outer wall, and a lattice-beam reinforcement that projects into the cavity from the inner side of the inner wall facing the outer wall. 
   
   
       2 . A pre-fabricated wall piece according to  claim 1 , wherein the lattice-beam reinforcement extends in the cavity all the way to the thermal insulation layer. 
   
   
       3 . A pre-fabricated wall piece according to  claim 1 , wherein at the upper end of the outer wall, an uppermost row of connector pins is provided as connecting reinforcement whose free ends project into the space of a joint ( 20 ) with a ceiling element and that can be connected with the ceiling element. 
   
   
       4 . A pre-fabricated wall piece according to  claim 1 , wherein the outer wall of the pre-fabricated wall piece is supported on a foundation. 
   
   
       5 . A pre-fabricated wall piece according to  claim 1 , wherein the connector pins are made of non-rusting material like stainless steel (V2A, V4A) or hot-galvanized steel. 
   
   
       6 . A pre-fabricated wall piece according to  claim 1 , wherein the lattice-beam reinforcement is made of steel without corrosion protection.