SU1689539A1 - Joint of struts and chords in lattice structure - Google Patents

Description

The invention relates to the field of construction and can be applied in lattice structures, for example in farms, columns with belts of paired pipes, mainly thin-walled. The aim of the invention is to reduce the metal and the complexity of manufacturing. In the nodal connection of the belt 1 of paired pipes are connected to the side faces of diagonals 2 and 3, made of open profiles, such as channels, one of the channels is butt-end joined to the wall of the other and welded to it along the inner perimeter, and the side faces of the diagonal bars are the channel shelves . A connecting element is installed to the diagonal walls, on the line of their intersection, for example, in the form of a plate 6. 3 Cp f-ly, 5 ill.

6 A-A

3

cn

WITH

1689539 A

FIG. 3

3

1689539

four

The invention relates to the field of construction and can be applied in lattice metal structures, for example in trusses, columns with belts made of paired pipes, mainly thin-walled, spiral-seam.

The aim of the invention is to reduce the metal and the complexity of manufacturing.

FIG. 1 shows a lattice structure, a general view; in fig. 2 — node I in FIG. one; in fig. 3 shows section A-A in FIG. 2; in fig. 4 shows a section BB in FIG. 2; in fig. 5 is a sectional view BB in FIG. four.

The knot joint has paired thin-walled, for example, spiral-seam pipes of belt 1, braces 2 and 3 of open profiles with flat edges, for example, channels, seam 4, welding along the inner perimeter of the channel of one of the braces to the wall of the other, seam 5, welding pipes of the belt to the side the faces of the braces of the connecting element in the form of a plate 6 attached to the walls of the brace along the line of their intersection, the seam 7 attaching the plates to the walls of the channels along the line of their intersection, the seam 8 welding the side edges of the plate to the belt pipes.

The operation of the nodal connection is as follows.

The efforts in the knot from brace 2 through the seams 4 and welding its end to the wall of brace 3 are transferred to its shelves, in which the efforts are decomposed into two components: one in the direction of the axes of the pipes of belt 1, perceived by two seams 5 located on either side of the pipes touching side faces (shelves) of braces, and the second in the direction of brace 3 and perceived within the node of its shelves. When installing the plate 6, the forces from the wall of the brace 2 are transferred to the seam 7, and from it, decomposing, are transmitted to the plate and the wall of the brace 3. From the plate 6 to the pipes of the belt 1, the forces are transmitted through the seams 8. If necessary, fixing in the assembly of other structural elements , for example ties, runs, plate 6 is made in the form of a shelf

corner, the second shelf is perpendicular to the axes of the pipes and outward from the lattice structure.

The advantage is the simplicity and low complexity of the junction, which makes it possible to widely use in construction, especially in agricultural objects, thin-walled spiral-seam pipes made of strip steel, 70-100 mm wide, 1-2 mm thick, which can be manufactured in field conditions. The use of thin-walled pipes allows to reduce the metal consumption by up to 10-15%. An additional reduction in metal consumption is achieved by the absence of chamfers in the node connection and the combination of the functions of the fastening parts in the form of corners to the node of other structures, for example, runs, ties, with an additional reinforcing plate adjacent to the walls of the channels along their intersection line.

Claims (4)

Claim 1. Nodal connection of braces and belts of lattice construction, including twin pipe belts and braces missed between them, interconnected with each other and with belts, characterized in that, in order to reduce metal consumption and labor intensity of production, each of the bracings is made of an open profile and connected to the wall of the other is along the inner perimeter, and each pipe of the belt is connected to the lateral faces of the diagonal bars along the line of tangency. 2. Connection pop. 1, that is, in order to increase the carrying capacity, it is provided with a connecting element rigidly attached to braces and paired belts. 3. Connection according to claim 2, characterized in that the connecting element is made in the form of a plate. 4. The connection according to claim 2. about the tl and h and th eu es that the connecting element is made in the form of a corner, 1689539 1689539 Bb FIG. five