Girders for reinforcing concrete and method for connecting them to pillars in order to provide continuity from bay to bay

Abstract

A girder for reinforcing structural members made of reinforced concrete is provided. The girder includes at least one truss and is provided with at least one lateral protrusion in reference to its ends. A method for connecting two girders being substantially arranged along the same direction, to a reinforced concrete pillar is also described, wherein at least one short reinforcing member is arranged aside the girders in reference to the pillar.

1 .- 15 . (canceled) 
   
   
       16 . A girder ( 1 ) for reinforcing structural members made of reinforced concrete, comprising a flat component ( 3 ) or a concave profile ( 6 ) to which a truss ( 2 ) is connected, the truss ( 2 ) comprising an upper longitudinal bar ( 2   c ) and a plurality of connecting bars ( 2   b ) connecting the longitudinal bar ( 2   c ) to the flat component ( 3 ) or concave profile ( 6 ), wherein proximate to each end thereof, the girder ( 1 ) is provided with one or more lateral protrusions ( 4 ,  5 ) transversely arranged with respect thereto. 
   
   
       17 . The girder ( 1 ) according to  claim 16 , wherein each of the lateral protrusions ( 4 ,  5 ) is formed of at least one bar transversely fixed to the girder ( 1 ). 
   
   
       18 . The girder ( 1 ) according to  claim 17 , wherein said bar is fixed under the upper longitudinal bar ( 2   c ) of the truss ( 2 ). 
   
   
       19 . The girder ( 1 ) according to  claim 17 , wherein the truss ( 2 ) is fixed on the flat component ( 3 ) and said bar is fixed underneath the flat component ( 3 ). 
   
   
       20 . The girder ( 1 ) according to  claim 16 , wherein the truss ( 2 ) is fixed on the flat component ( 3 ) and the lateral protrusions ( 4 ,  5 ) are in the form of flat horizontal fins laterally fixed at the ends ( 3   c ) of the flat component ( 3 ) and coplanar thereto. 
   
   
       21 . The girder ( 1 ) according to  claim 16 , wherein the truss ( 2 ) is longer than the flat component ( 3 ) or concave profile ( 6 ) and protrudes beyond the ends ( 3   c;    6   c ) thereof. 
   
   
       22 . The girder ( 1 ) according to  claim 21 , wherein the projecting ends of the truss ( 2 ) are provided with at least one horizontal profile ( 2   a ) arranged transversely to the girder ( 1 ). 
   
   
       23 . The girder ( 1 ) according to  claim 16 , wherein the truss ( 2 ) comprises at least one lower longitudinal bar ( 2   d ) contacting the flat component ( 3 ) or concave profile ( 6 ). 
   
   
       24 . The girder ( 1 ) according to  claim 22 , wherein the truss ( 2 ) comprises at least one lower longitudinal bar ( 2   d ) contacting the flat component ( 3 ) or concave profile ( 6 ). 
   
   
       25 . The girder ( 1 ) according to  claim 24 , wherein the at least one horizontal profile ( 2   a ) is fixed at the ends of the lower longitudinal bars ( 2   d ). 
   
   
       26 . The girder ( 1 ) according to  claim 24 , wherein the truss ( 2 ) comprises at least one lower longitudinal bar ( 2   d ) contacting the concave profile ( 6 ) and at least one intermediate longitudinal bar ( 2   e ) arranged between the upper longitudinal bar ( 2   c ) and the lower longitudinal bar ( 2   d ) and substantially parallel thereto, the at least one horizontal profile ( 2   a ) being fixed at the ends of the intermediate longitudinal bar ( 2   e ). 
   
   
       27 . A method for connecting two girders ( 1 ,  1 ′) and one pillar ( 7 ) for reinforcing structural elements made of reinforced concrete, said method comprising the steps of:
 providing two girders ( 1 ,  1 ′) each comprising a flat component ( 3 ) or a concave profile ( 6 ) to which a truss ( 2 ) is connected, the truss ( 2 ) comprising an upper longitudinal bar ( 2   c ) and a plurality of connecting bars ( 2   b ) connecting the longitudinal bar ( 2   c ) to the flat component ( 3 ) or concave profile ( 6 ), wherein proximate to each end thereof, the girder ( 1 ) is provided with one or more lateral protrusions ( 4 ,  5 ) transversely arranged with respect thereto;   placing one end of each of the two girders ( 1 ,  1 ′) onto the upper end of the pillar ( 7 ) from which reinforcing members ( 8 ) protrude;   arranging one or more connecting members ( 9 ,  10 ) in correspondence to the pillar ( 7 ) externally to the reinforcing members ( 8 ) of the pillar ( 7 ) and the girders ( 1 ,  1 ′), aside and substantially parallel to the girders ( 1 ,  1 ′); and   carrying out a cast of concrete, wherein the connecting members ( 9 ,  10 ) are supported by the lateral protrusions ( 4 ,  5 ,  4 ′,  5 ′) of the girders ( 1 ,  1 ′).   
   
   
       28 . The method according to  claim 27 , wherein the connecting members ( 9 ,  10 ) are hung to the lateral protrusions ( 4 ,  5 ,  4 ′,  5 ′) of the girders ( 1 ,  1 ′). 
   
   
       29 . The method according to  claim 28 , wherein the connecting members ( 9 ,  10 ) have such a height that, once they are hung to the lateral protrusions ( 4 ,  5 ,  4 ′,  5 ′) of the girders ( 1 ,  1 ′), they allow placement of a secondary girder ( 11 ), having lower longitudinal bars, onto the pillar ( 7 ) transversely thereto by inserting said lower longitudinal bars under the connecting members ( 9 ,  10 ). 
   
   
       30 . The method according to  claim 27 , wherein the connecting members ( 9 ,  10 ) are comprised of a truss provided with a centre portion having a wide opening for allowing insertion and placement of a secondary girder onto the pillar ( 7 ) transversely thereto. 
   
   
       31 . The method according to  claim 28 , wherein the connecting members ( 9 ,  10 ) are comprised of a truss provided with a centre portion having a wide opening for allowing insertion and placement of a secondary girder onto the pillar ( 7 ) transversely thereto. 
   
   
       32 . The method according to  claim 29 , wherein the connecting members ( 9 ,  10 ) are comprised of a truss provided with a centre portion having a wide opening for allowing insertion and placement of a secondary girder onto the pillar ( 7 ) transversely thereto. 
   
   
       33 . The method according to  claim 27 , wherein the connecting members ( 9 ,  10 ) are provided with a shaped concave profile ( 12 ) suitable for being arranged in contact with the concave profiles ( 6 ,  6 ′) of the girders ( 1 ,  1 ′) and the pillar ( 7 ) in order to contain the cast of concrete without the help of a formwork. 
   
   
       34 . The method according to  claim 28 , wherein the connecting members ( 9 ,  10 ) are provided with a shaped concave profile ( 12 ) suitable for being arranged in contact with the concave profiles ( 6 ,  6 ′) of the girders ( 1 ,  1 ′) and the pillar ( 7 ) in order to contain the cast of concrete without the help of a formwork. 
   
   
       35 . The method according to  claim 29 , wherein the connecting members ( 9 ,  10 ) are provided with a shaped concave profile ( 12 ) suitable for being arranged in contact with the concave profiles ( 6 ,  6 ′) of the girders ( 1 ,  1 ′) and the pillar ( 7 ) in order to contain the cast of concrete without the help of a formwork.