A method of making a virgin joint between at least two separate structural hollow sections in a truss or jacket structure made of the at least two structural hollow sections may include the steps of applying a fiber reinforced polymer wrap around the at least two structural hollow sections in a transitional area, covering and thus bonding together the at least two structural hollow sections, and forming the virgin joint between the at least two structural hollow sections and the fiber reinforced polymer wrap. Welding of the virgin joint between the at least two structural hollow sections is avoided.

The present invention relates to a prefabricated construction system and method, for erecting constructions by means of the assembly of prefabricated structural elements obtained by cutting flat materials, forming structural nodes by means of coupling at least a first coupling configuration formed by first slots made in a plurality of parallel boards forming a first structural element with at least a second coupling configuration formed by second slots made in a plurality of parallel boards forming a second structural element, providing a structural core in the form of an array having interstitial openings going through it which allow the coupling of third and fourth coupling configurations of third and fourth structural elements.

A space frame is provided having a first set of nodes located along a first surface and a second set of nodes located along a second surface, and a unitary cell. The second surface non-intersecting the first surface. The unitary cell comprises at least four continuous web elements and extending in three dimensions. The unitary cell spans at least two nodes of the first set of nodes and at least two nodes of the second set of nodes.

A double-shelled load-bearing structure module of any geometric shape, is formed from top and bottom secondary shell elements. A double-shelled load-bearing structure in the form of a primary shell structure is joined with the module, made of individual assembled load-bearing structure modules of this kind having statically necessary filling rods. The secondary shell elements have, in each corner, a connection pocket, which is open at the top or bottom or is open at the top and bottom, of appropriate size for connecting a plurality of load-bearing structure modules. The connection pocket, at least on the outside, on the outer vertical surfaces of the secondary shell elements, is delimited by preferably metal profiles or metal sheet. Connection tabs can also be disposed in each corner instead of connection pockets. The connection tabs are formed from angular surfaces, preferably metal sheet, protruding towards the intermediate space between the secondary shell elements.

A precast building material contains a substrate, a peripheral frame, a metal reinforcement unit, and a concrete layer. The substrate is in a parallelogram shape. The peripheral frame is mounted around the substrate so that an accommodation chamber is defined between the peripheral frame and the substrate. The peripheral frame includes multiple first connection rails having at least one first slot, multiple second connection rails having at least one second slot, multiple first engagement portions, and multiple second engagement portions. The respective first connection rail has multiple first locking orifices, and the respective second connection rail has multiple second locking orifices. The metal reinforcement unit is fixed in the accommodation chamber and includes multiple rebars. The concrete layer paving the accommodation chamber, and the concrete layer is connected with the peripheral frame and the metal reinforcement unit and is removable from the substrate.

A space frame is provided having a first set of nodes located along a first surface and a second set of nodes located along a second surface, and a unitary cell. The second surface non-intersecting the first surface. The unitary cell comprises at least four continuous web elements and extending in three dimensions. The unitary cell spans at least two nodes of the first set of nodes and at least two nodes of the second set of nodes.

A joint attachment system for a reconfigurable truss includes a first joint attachment having a first pivot axis and a second joint attachment having a second pivot axis. The first joint attachment and second joint attachment form a concentric spherical joint linkage when attached to a first body member and a second body member, respectively. The first pivot axis of the first joint attachment intersects the second pivot axis of the second joint attachment at a single point X which defines a center of the concentric spherical joint linkage. The concentric spherical joint linkage is configured to allow the addition of one or more joint attachments and body members to the truss node. In addition, the concentric spherical joint linkage is configured to allow the removal of one or more joint attachments and body members from the truss node.

A double-shelled load-bearing structure module of any geometric shape, is formed from top and bottom secondary shell elements. A double-shelled load-bearing structure in the form of a primary shell structure is joined with the module, made of individual assembled load-bearing structure modules of this kind having statically necessary filling rods. The secondary shell elements have, in each corner, a connection pocket, which is open at the top or bottom or is open at the top and bottom, of appropriate size for connecting a plurality of load-bearing structure modules. The connection pocket, at least on the outside, on the outer vertical surfaces of the secondary shell elements, is delimited by preferably metal profiles or metal sheet. Connection tabs can also be disposed in each corner instead of connection pockets. The connection tabs are formed from angular surfaces, preferably metal sheet, protruding towards the intermediate space between the secondary shell elements.

A method of making a virgin joint between at least two separate structural hollow sections in a truss or jacket structure made of the at least two structural hollow sections may include the steps of applying a fiber reinforced polymer wrap around the at least two structural hollow sections in a transitional area, covering and thus bonding together the at least two structural hollow sections, and forming the virgin joint between the at least two structural hollow sections and the fiber reinforced polymer wrap. Welding of the virgin joint between the at least two structural hollow sections is avoided.

A construction system for structural frameworks of buildings is described, comprising a first and a second structural elements mutually connected by connecting elements, the first and second structural elements being vertically assembled to make a pillar of the framework, a third and a fourth structural elements mutually connected by connecting elements to make a beam of the framework, the third and fourth structural elements being assembled transversally to the first and second structural elements, the third and/or fourth structural elements being associated as joint to the first and/or to the second structural element, the third and fourth structural elements being further connected to the first and the second structural elements by connecting elements, to make the framework, the first, second, third and fourth structural elements being composed of a panel having height and width greater than the thickness.