Prefabricated construction element for buildings

Abstract

The invention relates to a prefabricated construction element for buildings in prefabricated construction, comprising a core element ( 10 ) and at least one reinforcement element ( 12 ). In order to absorb high tensile and transverse forces without the danger of developing cracks, the reinforcement element is configured as a flat material element ( 12 ) from fiber-reinforced plastic that is fixated on a lateral face ( 20 ) of the core element ( 10 ) in a form-fit and/or a material fit.

1 . Prefabricated structural element for buildings, preferably in prefabricated construction, with a core element ( 10 ) and at least one reinforcing piece ( 12 ) to carry tensile forces, distinguished by the fact that the reinforcing piece is formed as a flat stock piece ( 12 ) made from fiber-reinforced plastic that is fixed to a long face ( 20 ) of the core element ( 10 ) form-fittingly and/or by using a joining substance.  
     
     
         2 . Structural element as in  claim 1 , distinguished by the fact that flat stock piece ( 12 ) has a plastic binder matrix and a fiber fabric or crossply embedded therein.  
     
     
         3 . Structural element as in  claim 1  or  claim 2 , distinguished by the fact that flat stock piece ( 10 ) [sic, should be  12 ] is adhesively affixed over an extensive area, preferably with an epoxy resin adhesive, to a long face ( 20 ) of core element ( 10 ).  
         1  Translator's Note: The German reads “auf eine die Breitseitenfläche ( 20 )” which is not grammatically correct. The intention is unclear. Possibly it should read either “auf eine Breitseitenflätche ( 20 )” (“to a long face ( 20 )” or “auf eine der Breitseitenflächen ( 20 ) (“to one of the long faces ( 20 )”). The similar text on p. 2 of the Description gives “auf mindestes eine der Breitseitenflächen” (“to at least one of the long faces”).  
     
     
         4 . Structural element as in any one of claims  1  through  3 , distinguished by the fact that flat stock material ( 12 ) has a plurality of projecting knob-like anchoring members ( 14 ) on one side, by means of which it is engaged throughout core element ( 10 ), through openings in long face ( 20 ), and is anchored therein form-fittingly.  
     
     
         5 . Structural element as in any one of claims  1  through  4 , distinguished by the fact that core element ( 10 ) consists of concrete, lightweight concrete, cellular concrete, or gypsum.  
     
     
         6 . Structural element as in  claim 4  or  claim 5 , distinguished by the fact that anchoring members ( 14 ) are embedded in the core element, and in particular are cast integral therewith.  
     
     
         7 . Structural element as in any one of claims  1  through  6 , distinguished by the fact that both long faces ( 20 ) of slab core element ( 10 ) have a flat stock piece ( 12 ) made from fiber-reinforced plastic thereon.  
     
     
         8 . Structural element as in any one of claims  1  through  7 , distinguished by the fact that the binder matrix of the flat stock consists of a thermosetting plastic from the group of epoxy resin, polyester resin, vinyl resin.  
     
     
         9 . Structural element as in any one of claims  1  through  7 , distinguished by the fact that the binder matrix of flat stock piece ( 12 ) consists of a thermoplastic from the group of polyamide, polymethylmethacrylate, polyphenylene sulfide, polypropylene, polyethylene terephthalate, polybutylene terephthalate, polyetherimide, styrene polymer, polyetheretherketone.  
     
     
         10 . Structural element as in any one of claims  1  through  9 , distinguished by the fact that the fibers of the flat stock piece are selected from the group of carbon fibers, glass fibers, aramid fibers, polyethylene fibers, basalt fibers, natural fibers.  
     
     
         11 . Structural element as in any one of claims  1  through  10 , distinguished by several reinforcing pieces ( 16 ) transversely interspersed in the core element, the widened ends ( 18 ) of which fit flush against the long faces ( 20 ) of core element ( 10 ) and are bonded to the at least one flat stock piece ( 12 ) using a joining substance, preferably adhesively.  
     
     
         12 . Structural element as in  claim 11 , distinguished by the fact that reinforcing piece ( 16 ) has a double-T shape.  
     
     
         13 . Structural element as in  claim 10  or  claim 11 , distinguished by the fact that reinforcing pieces ( 16 ) are made of metal, in particular aluminum or steel, or a fiber-reinforced polymer material.  
     
     
         14 . Reinforcing piece for prefabricated structural elements for buildings, distinguished by a flat stock piece ( 12 ) on which projecting knob-like anchoring members ( 14 ) are formed on one side.  
     
     
         15 . Reinforcing piece as in  claim 14 , distinguished by the fact that flat stock piece ( 12 ) is formed as a sheet, film, or grid element.  
     
     
         16 . Method for manufacture of reinforcement pieces for prefabricated structural elements for buildings, distinguished by the fact that a fiber fabric or crossply is soaked with a binder, heated up to temperature in a continuous manner, and then cooled down again and at the same time pressed to form flat stock piece ( 12 ), and that during the manufacturing process knob-like anchoring members ( 14 ) are formed on one side and are preferably pressed out from the flat stock piece.  
     
     
         17 . Use of prefabricated structural elements as in any one of  claims 1  to  13  as wall elements, ceiling elements, or supports for prefabricated buildings.