Prefabricated building structure
A prefabricated building structure, comprising: —a first and a second pillar ( 21, 22 ) reciprocally stacked and having a preponderant longitudinal extension direction ( 20 ); an upper end ( 211 ) of the first pillar ( 21 ) being located at a lower end ( 221 ) of the second pillar ( 22 ); —a beam ( 3 ) extending substantially horizontally and having a first end ( 31 ) located at said upper end ( 211 ) and said lower end ( 221 ); —reciprocal fixing means ( 9 ) for reciprocally fixing the first pillar ( 21 ), the second pillar ( 22 ) and the beam ( 3 ); said reciprocal fixing means ( 9 ) being able to be at least partly incorporated in the first pillar ( 21 ), in the second pillar ( 22 ), in the beam ( 3 ). The reciprocal fixing means ( 9 ) comprises projecting means ( 91 ) and corresponding housing means ( 92 ) in which the projecting means ( 91 ) fits defining a joint. The projecting means ( 91 ) and the housing means ( 92 ) define male-female connections both between the first pillar ( 21 ) and the beam ( 3 ) and between the second pillar ( 22 ) and the beam ( 3 ).
1. A prefabricated building structure, comprising:
a first and a second pillar ( 21 , 22 ) stacked and having a preponderant longitudinal extension direction ( 20 );
an upper end ( 211 ) of the first pillar ( 21 ) being located at a lower end ( 221 ) of the second pillar ( 22 );
a beam ( 3 ) extending substantially horizontally and having a first end ( 31 ) located at said upper end ( 211 ) and said lower end ( 221 );
fixing means ( 9 ) for fixing the first pillar ( 21 ), the second pillar ( 22 ) and the beam ( 3 ); said fixing means ( 9 ) being able to be at least partly incorporated in the first pillar ( 21 ), in the second pillar ( 22 ), in the beam ( 3 );
the fixing means ( 9 ) comprising projecting means ( 91 ) and corresponding housing means ( 92 ) in which the projecting means ( 91 ) fits defining a joint;
said projecting means ( 91 ) and said housing means ( 92 ) defining male-female connections both between the first pillar ( 21 ) and the beam ( 3 ) and between the second pillar ( 22 ) and the beam ( 3 ); characterised in that:
the structure comprises enveloping means ( 8 ); the enveloping means ( 8 ) comprising a fibre-resin band which compresses the first pillar ( 21 ) along the preponderant longitudinal extension direction ( 20 ) generating an axial compression force oriented along the preponderant longitudinal extension direction; the enveloping means ( 8 ) exerting a post compression by winding;
the first pillar ( 21 ), the second pillar ( 22 ) and the horizontal beam ( 3 ) are dry-connected without welds on site; and further casts are absent among the first pillar ( 21 ), the second pillar ( 22 ) and the horizontal beam ( 3 ).
2. The structure according to claim 1 , characterised in that the projecting means ( 91 ) comprises:
a first protrusion ( 213 ) located at said upper end ( 211 ) and associated to the first pillar ( 21 );
a second protrusion ( 223 ) located at said lower end ( 221 ) and associated to the second pillar ( 22 );
the first and the second protrusion ( 213 , 223 ) projecting transversally with respect to said preponderant longitudinal extension direction ( 20 );
the housing means ( 92 ) comprising at the first end ( 31 ) of the beam ( 3 ) a slot ( 30 );
the first and the second protrusion ( 213 , 223 ) at least partially fitting in the slot ( 30 ) at the first end ( 31 ).
3. The structure according to claim 2 , characterised in that said first pillar ( 21 ) comprises:
a first element ( 215 ) comprising said first protrusion ( 213 );
a first support ( 214 ) to which the first element ( 215 ) is removably connected; said second pillar ( 22 ) comprises:
i) a second element ( 225 ) comprising said second protrusion ( 223 );
ii) a second support ( 224 ) to which the second element ( 225 ) is removably connected.
4. The structure according to claim 3 , characterised in that the first element ( 215 ) is a head plate of the first support ( 214 ) and the second element ( 225 ) is a head plate of the second support ( 224 ).
5. The structure according to claim 4 , characterised in that the enveloping means ( 8 ) pass between the plate of the first element ( 215 ) and the first support ( 214 ).
6. The structure according to claim 3 , characterised in that the first element ( 215 ) is an angle profile comprising:
a first arm ( 216 ) which connects to the first support ( 214 ) along a lateral flank ( 219 ) of the first support ( 214 );
a second arm ( 217 ) which projects away from the first support ( 214 ) and in which said first protrusion ( 213 ) is made;
the second element ( 225 ) being an angle profile comprising:
i) a first portion ( 226 ) which connects laterally to the second support ( 224 );
ii) a second portion ( 227 ) which projects away from the second support ( 224 ) and in which said second protrusion ( 223 ) is made.
7. The structure according to claim 2 , characterised in that said slot ( 30 ) has a preponderant longitudinal direction and extending in width orthogonally to said preponderant extension direction; the first and the second protrusion ( 213 , 223 ) being superposed one on the other and being joined in the width of the slot ( 30 ).
8. The structure according to claim 1 , characterised in that said beam ( 3 ) comprises a plurality of holes ( 34 ); said structure comprising threaded joining means ( 5 ) which crosses said holes ( 34 ) and which inserts in threaded counter-shapings made in the first and the second pillar ( 21 , 22 ); said threaded joining means ( 5 ) being stressed by pure traction.
9. The structure according to claim 1 , characterised in that it comprises a concrete vertical wall ( 6 ) which lies in the plane identified by the first pillar ( 21 ) and by the beam ( 3 ) and which occludes the space interposed between the first pillar ( 21 ) and the beam ( 3 ).