Assembly of prefabricated elements to form a prefabricated building with at least two floors and related building and installation process

Abstract

The assembly of prefabricated elements to form a prefabricated building with two stories includes: a prefabricated hollow structure (W) formed by portions of the walk floors of the ground floor and of the floor above (M, N) permanently connected to one another by portions of transverse walls (I) of the ground floor, and a prefabricated portal structure (V) formed by a central portion (O) of the roof floor of the upper story connected permanently to two portions of transverse walls (L) of the same story, the portal structure (V) being designed to be fixed on top of the structure (W).

1 . An assembly of prefabricated elements to form a prefabricated building with at least two stories and associated with one another in a compact grouping designed for transportation to an installation site of the building, the assembly comprising:
 a hollow prefabricated structure formed by a central portion of a walk floor of a ground story and a central portion of a floor above permanently connected to one another by means of portions of transverse walls of the ground story, the hollow prefabricated structure being adapted to extemporaneously contain walls and floors of the building or portions thereof to form said compact grouping of prefabricated constructional elements;   for each story above the ground story, a prefabricated portal structure formed by a central portion of the floor that roofs said story connected permanently to two portions of transverse walls of the same story, said portal structures being designed to be inserted with respective central portions of the floor) resting on top of one another and above said hollow prefabricated structure to form said compact grouping and then, during installation, to be fixed to one another and to the hollow structure by means of respective portions of transverse walls;   guide means for guiding, during assembly on site, the portal structures in a lifting movement on top of the hollow prefabricated structure, lateral portions of the walk floor and roofing floor being hinged to said central portions of respective floors according to longitudinal axes, to facilitate installation thereof, said walk floor of the ground story being formed by a first lower central portion and two first lower lateral portions, said first lower central portion being substantially rectangular, forming the walk floor of the hollow prefabricated structure, said two first lower lateral portions being opposed and hinged along external sides of said lower central portion according to longitudinal axes in a manner to be able to rotate from a vertical position in said grouping to a horizontal installation position, said walk floor of the second story being formed by a second central portion and two second lateral walk floor portions, said second central portion being above said first central portion, said second central portion being substantially rectangular, forming the upper floor or ceiling of the hollow prefabricated structure, said two second lateral walk floor portions being opposed and hinged along external sides of said second central portion according to longitudinal axes in a manner to be able to rotate from a vertical position in said grouping to a horizontal installation position, said roofing floor of the second story being formed by a third central roofing portion and two third lateral portions, said third central roofing portion being substantially rectangular, forming the floor of said portal structure, said two third lateral portions being opposed and hinged along external sides of said third central portion according to longitudinal axes in a manner to be able to rotate from a vertical position in said grouping to a horizontal installation position.   
     
     
         2 - 9 . (canceled) 
     
     
         10 . An assembly according to  claim 1 , wherein the arrangement of said lateral portions of floor in said grouping comprises, from an inside outward, said first portions, said second portions and said third lateral portions, the inside of said hollow structure being delimited in said grouping by said first lateral portions of walk floor arranged in the vertical position. 
     
     
         11 . An assembly according to  claim 1 , wherein in said grouping, the third central portion of the roofing floor is substantially resting on and/or supported by the second central portion of floor of the hollow prefabricated structure below. 
     
     
         12 - 18 . (canceled) 
     
     
         19 . An assembly according to  claim 1 , further comprising one or more columns to be fixed vertically in a permanent manner to an outer periphery of at least said portions of floor of the second story in corner areas. 
     
     
         20 - 22 . (canceled) 
     
     
         23 . An assembly according to  claim 1 , wherein prefabricated elements comprise respective lengths of piping of systems of the building for distribution and/or collection of fluids, and to convey electricity lines, and during assembly on site corresponding adjacent lengths of piping of walls and floors or portions thereof are joined to one another by means of appropriate connections. 
     
     
         24 . A grouping for transportation to the installation site of the assembly of prefabricated structural elements according to  claim 1 . 
     
     
         25 . An assembly process of walls and floors of a building with two stories starting from a grouping of components of an assembly according to  claim 1 , the assembly process on site comprising:
 placing in a suitable position the grouping of floors and walls with a base formed by the first central portion of the walk floor of the ground story resting on a suitable support;   lifting said portal structure on top of said hollow structure and fixing the portal structure to the hollow structure;   rotating the lateral portions of the floor slab of the first floor from a vertical position to a horizontal position and supporting said lateral portions in said horizontal position;   rotating the lateral portions of the walk floor of the ground story from a vertical position to a horizontal position.   
     
     
         26 . (canceled) 
     
     
         27 . A process according to  claim 25 , wherein rotation of the lateral portions of the roof floor of the second story takes place after lifting of the portal structure. 
     
     
         28 . (canceled) 
     
     
         29 . A process according to  claim 25 , wherein rotation of the lateral portions of a roof floor of the second story from a vertical position to a horizontal position takes place after rotation of the lateral portions of the walk floor of the second story from a vertical position to a horizontal position. 
     
     
         30 - 36 . (canceled) 
     
     
         37 . A process according to  claim 25 , wherein the lateral portions of the floors of the second story and of a roof thereof are supported at a free periphery, at least in corner areas, by permanent support columns. 
     
     
         38 - 45 . (canceled) 
     
     
         46 . A prefabricated building with at least two stories, wherein the prefabricated building is formed by means of an assembly of prefabricated elements as claimed in  claim 1 . 
     
     
         47 . A prefabricated building with at least two stories, wherein the prefabricated building is installed on site according to a process as claimed in  claim 25 . 
     
     
         48 . An assembly according to  claim 19 , wherein a structural casing of the assembly, is formed by a reticular structure, a frame of a primary structure being formed by sections or beams which form nine flat frames with rectangular shape which, after reaching a final position, form the walk floors of the ground story, of the second story and roof floors, said flat frames being formed by secondary frameworks. 
     
     
         49 . An assembly according  claim 1 , wherein said grouping has an arrangement of portions of walls and portions of the floors substantially symmetrical with respect to a longitudinal vertical plane passing along a longitudinal centerline of said hollow prefabricated structure.