SU916690A1 - Connection assembly of tubular rods of three-dimensional structure - Google Patents

Description

The invention relates to the construction, in particular to the structural structures of coatings and floors of buildings and structures.

Known is the nodal connection of the rods of the spatial construction of the s'stema ’’ Space Dec ’’, formed by rod pyramids consisting of belts and diagonal bands and belt rods connecting the tops of the pyramids. The connection includes a node at the top of the pyramid with tubular couplings and threaded tips of tubular belt rods screwed into the couplings [1].

This nodal connection is characterized by the high complexity of the nodal element design, the increased labor intensity of manufacturing and the overhead of the metal associated with the weakening of the sections of the rods with threads.

The closest to the proposed is a nodal connection of the tubular cores of a spatial structure, having pyramids made of belts and diagonals, and rods connecting the vertices of the pyramids, including the nodal element, to the end of which are attached the ends of the comb 2

pyramids, and sheet gussets, "to which are attached the ends of the rods connecting the tops of the pyramids and the crest element, which unites the node and the sheet gussets (2).

The axes of the belt rods of different directions are centered, which leads to the appearance of additional

10 bending moments in the rods and to the weighting of the entire spatial structure; the scope of the connection is limited to the bearing capacity of the fastener (coupling bolt) and extends to the sla’5. Boned small spans.

The purpose of the invention is to increase the strength of the nodal connection, and simplify manufacturing.

This goal is achieved by the fact that a nodal connection of tubular rods of a spatial structure having pyramids made of belts and braces, and rods connecting the tops of the pyramids, including a node, to the end of which are attached the ends of the pyramid braces and sheet ends to which the rods ends are attached. ,

30 connecting vertices of pyramids ^ and cre3

916690

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The pintle element combining the node element and the sheet gussets, the connection is provided with a restrictive washer with slots, corner flanges and stops, with the corner flanges attached to the ends of the rods, and the sheet gussets to the node element perpendicular to it, at. In this case, the edge of each corner flange is installed on one side between the stops and sheet gussets, and on the other, between the cuts of the restrictor washer and sheet gussets.

FIG. 1 shows a fragment of a lattice spatial structure, 15 is a general view in axonometry; 2, the plan of the node connection of the top of the pyramid with the rods connecting the top of the pyramid? see 3 - facade of the nodal connection; in fig. 4 - times ^ d cut A-A in FIG. 3; in fig. 5 is a section BB in FIG. 3; in fig. 6 - node connection, in a perspective view.

The braces 1 of the pyramid are attached to the node 2. Supports 3 are made on the back of the node. On the same side, the tubular core 4 and the sheet ends 5 are attached to the node.

On the ends of rods 6 that connect the vertices of the pyramids are arranged angular flanges ³⁰ stems 7. The edges of the flanges from the node element mounted between the abutments and leaf luminaire, and on the opposite side - the side walls of the projections 8, 35 between the slots in the preamble washer 9 connected with knot element bolt 10 with washer 11 and nut 12.

When loading a spatial structure, the vertical components of the strut forces in the level of the top of the pyramid are mutually balanced within the nodal connection. The total horizontal component of the efforts in the bracings adjacent to the node is balanced by the resultant force in the rods connecting this node with the adjacent ones. The compression force in the rod connecting the tops of the pyramids is transmitted through the flange to the nodal connection by contact. The tensile force is transmitted to the assembly through the protruding edges of the corner flanges, the stops on the node and the side walls of the slots on the restrictive washer.

Due to the contact transfer of forces, the carrying capacity of the node connections is dependent solely on the strength properties of the material, and not on the strength of the fastener; the fastener only prevents the rods from falling out. The assembly of the spatial structure with the described nodal connections is simple and technologically advanced. It is performed without preliminary marking, alignment and adjustment and is reduced to the layout of the pyramids, the interconnection of their belts, the installation of rods connecting the tops of the pyramids, and the formulation of restrictive washers with their fastening to the nodal elements. The proposed invention will significantly facilitate and accelerate the installation of spatial structures.

Claims (1)

Claim Nodal connection of tubular rods of spatial construction, having pyramids made of belts and diagonals, and rods connecting the tops of the pyramids, including the node, to the end of which the ends of the pyramid braces are attached, and sheet gussets to which the ends of the rods connecting the tops of the pyramids are attached, and fastening an element that combines a knot element and sheet gussets, characterized in that, in order to increase the strength and simplify production, it is provided with a restrictive washer with slots, angled flan s and stops, and the angled flanges attached to the ends of the rods, and leafy luminaire - to the node element "perpendicular thereto, wherein the edge of each of the angle flange on the one hand is installed between the abutments and leaf fasonkamia the other - between the slits bounding washer and leaf luminaire.