Grooved stiffened beam

Abstract

We introduce a new grooved stiffened beam that efficiently withstands dead loads, whose mechanical characteristics are higher than those of present structural beams, that can be used both for building roof trusses as well as for huge architectonical vaults. Summarizing the different parts that form this beam, we can state that it is formed by a core, skids or sides placed both on the top and on the bottom, and edges at the ends of the piece; these skids consist of a flat surface divided into three parts or sections: the first flat surface section, joined to one of the ends of the core by means of a ply at a ninety degree angle in relation to the core, and on the other end with a ply to the flat surface intermediate section, displaced from the central axis of the skids that conforms the stiffened section, and which is followed by a third flat surface section similar to the first, at the same plane as the first section, ending with a second ply to the lower skid at a ninety degree angle in relation to the skids; and because this flat surface core is divided into three sections: the first flat surface section is joined at its top end to the top skid at a ninety degree angle and it is followed by a flat surface intermediate section, displaced from the axis of the core which constitutes the stiffened section, joined by means of plies, it is followed by a third section similar to the first flat surface section at the same plane with the first section, ending with a second ply that joins it to the lower skid at a ninety degree angle in relation to the core. Thus, the scope of the invention lies within the universe of structural beams used to build trusses.

1 . Grooved stiffened beam comprising: 
 a machined C shaped beam, formed of a core, skids or sides placed both at a top and at a bottom and formed of edges at ends thereof, wherein said skids have a flat surface divided into three parts or sections a first flat surface section, joined to one end of the core by a ply at a ninety degree angle in relation to the core and to another end of the core with a ply to a flat surface intermediate section, displaced from a central axis of said skids conformable to a stiffened section joined by a second ply to a third flat surface section, at a same plane as the first section, ending with a second ply to the one of the edges at a ninety degree angle in relation to the skids wherein a flat surface core is divided into three sections, a first flat surface section joined at a top end thereof to a top skid at a ninety degree angle followed by a flat surface intermediate section, displaced from an axis of the core forming a stiffened section, joined by plies, and followed by a third section similar to the first flat surface section at the same plane with the first section, ending with a second ply joined to the lower skid at a ninety degree angle in relation to the core:    
   
   
       2 . Grooved stiffened beam, according to  claim 1 , wherein axes of the first and the third sections of the core in relation to the intermediate section, are displaced from the axes due to the plies, so that such section is parallel to the axis of the first and of the third section, and wherein the axes of the first and the third section of the skids, in relation to the intermediate section, are displaced by plies so that the last section is parallel in relation to the axes of the first and third sections.  
   
   
       3 . Grooved stiffened beam, according to  claim 1 , wherein edges of the machined piece double resistance thereof when beams are placed opposite to each other.