RU221837U1 - Spatial coverage block - Google Patents

Abstract

The utility model relates to construction, namely to the covering of buildings and structures with large spans, and can be used in industrial and agricultural construction. The technical result achieved by the utility model is to expand the arsenal of long-span spatial covering structures due to the possibility of discharging water from the roof. To solve the technical problem, a spatial block of the covering is proposed, including upper (1) and lower (2) belts of a convex curved outline, curved in the longitudinal direction and interconnected at the ends, and between the belts there are intermediate transverse posts (3) rigidly connected to them, in this case, the upper chord (1) is made of profiled sheets with a longitudinal arrangement of corrugations, the lower chord (2) is made of rod reinforcement in the form of a metal structure, equipped with a central long reinforcing rod (4) and branched rod reinforcement of a smaller diameter (5), combined with a central long rod (4) with welded joints, and the intermediate transverse posts (3) are made of a triangular lattice type from the upper horizontal (9), middle vertical (10) and two lateral inclined elements (11) in the form of steel corners, rigidly fastened together through welded joints. What is new is that at the ends of the upper chord (1) there are transverse support elements installed, which consist of a plate (6) and a bent corner (7) welded to it, combined with profiled sheets of the upper chord (1) using combined spot welding, in in which, under the convex corrugations of the profiled sheet, holes are made through which the ends of the said branched rod reinforcement (5) of the lower chord (2) are passed, which is bent and fixed by electric arc welding to itself, forming loops that are intended to connect the upper (1) and lower chords (2), and between the intermediate transverse posts (3) there are diagonal elements (12) attached to them by welding in the form of steel corners. 6 ill.

Description

The utility model relates to construction, namely to the covering of buildings and structures with large spans, and can be used in industrial and agricultural construction.

There is a known spatial coating slab, including upper and lower chords of a convex curved outline, made of a profiled sheet with a longitudinal arrangement of corrugations; at the supporting ends of the plate, the corrugations of the upper chord are placed in the corrugations of the lower chord and are interconnected, and between the belts there are intermediate elements made of profiled thin-sheet strips attached by flanges to flanges of corrugated belts (USSR author's certificate No. 1479584 A1, priority date 06/03/1987, publication date 05/15/1989, authors: Grigoriev V.P. and Grigoriev S.V., RU).

The disadvantages of the known analogue are: firstly, high material consumption due to the manufacture of belts and intermediate elements from corrugated sheets; secondly, complex and labor-intensive manufacturing technology due to the large range of structural elements; thirdly, a limited scope of application, due to the predominant use in small and medium spans, due to the insufficient load-bearing capacity for a long-span slab.

As a prototype, a spatial covering block is adopted, including upper and lower chords of a convex curvilinear outline, bent in the longitudinal direction, and at the ends of the upper chord there are transverse support elements installed in the form of a channel covering the upper chord and rigidly connected to it by welding, between the shelves of the support channel in its vertical part, holes are made evenly along the length through which the ends of the specified branched rod reinforcement of the lower chord are passed, made with threads and equipped with nuts with an oblique washer resting with a beveled edge on the surface of the channel, which are intended for connecting the upper and lower chords and for regulating the preliminary stress throughout the structure. In this case, the upper chord is formed from profiled sheets with a longitudinal arrangement of corrugations, the lower chord is made of rod reinforcement in the form of a metal structure, equipped with a central long reinforcing rod and branched rod reinforcement of a smaller diameter, combined with the central long rod by welded joints, and the intermediate transverse posts are made of lattice type of triangular shape consisting of an upper horizontal, a middle vertical and two lateral inclined elements in the form of steel corners, rigidly fastened together by welded joints. The intermediate transverse posts are made of a triangular lattice type, consisting of an upper horizontal, a middle vertical and two lateral inclined elements in the form of steel corners, rigidly fastened to each other by welded joints (RF patent No. 217962 U1, priority date 02/21/2023, publication date 04/26/2023, authors: Grigoriev S.V. Deordiev S.V., RU, prototype).

The disadvantage of the prototype is its limited scope due to insufficient load-bearing capacity for large spans and the inability to regulate the prestressing of the structure.

The technical problem solved by the utility model is the creation of a structure for a spatial roofing block with the ability to discharge water from the roof.

To solve the technical problem, a spatial block of the coating is proposed, including upper and lower chords of a convex curvilinear outline, curved in the longitudinal direction and interconnected at the ends, and between the chords there are intermediate transverse racks rigidly connected to them, while the lower chord is made of rod reinforcement in in the form of a metal structure equipped with a central long reinforcing rod and branched rod reinforcement of a smaller diameter, combined with the central long rod by welded joints, and the intermediate transverse posts are made of a triangular lattice type from the upper horizontal, middle vertical and two lateral inclined elements in the form of steel corners, rigidly fastened together by welded joints. What is new is that at the ends of the upper chord, transverse support elements are installed, which consist of a plate and a bent corner welded to it, combined with profiled sheets of the upper chord using combined spot welding, in which holes are made under the convex corrugations of the profiled sheet through which the ends of the said branched rod reinforcement of the lower chord, which is bent and fixed by electric arc welding to itself, forming loops that are intended to connect the upper and lower chords, and between the intermediate transverse posts there are diagonal elements attached to them by welding in the form of steel corners.

According to the utility model, the upper chord is formed from profiled sheets secured at transverse joints on intermediate transverse posts along the span using fasteners.

According to the utility model, hot-rolled rod reinforcement of class A240C is used in the metal structure of the lower chord.

Figure 1 schematically shows the spatial block of the coating, general view;

Fig.2 - the same, bottom view;

figure 3 - the same, general 3D view;

in fig. Figure 4 shows section A-A in Figure 1;

in fig. Figure 5 shows node I in Figure 1;

in fig. 6 shows a section B-B in FIG. 4.

The inventive spatial block of the coating, having a lens-shaped longitudinal section, contains upper 1 and lower 2 belts of a convex curvilinear outline, bent in the longitudinal direction and connected to each other at the ends. Between the belts 1, 2, evenly along the span, there are intermediate transverse posts 3 of a lattice type, connected to the upper 1 and lower 2 belts (Fig. 1). The upper belt 1 is made of profiled sheets with longitudinal corrugations (https://krasnoyarsk.spk.ru/catalog/krovlya/profnastil/ns35/0-6/profnastil-ots-ns35-0-6-1000-1060/, date viewed 02/11/2023). The lower chord 2 is made in the form of a metal structure made of rod reinforcement, in particular, hot-rolled reinforcement of class A240C (https://shop.optorg.ru/catalog/?cat_id=1188, accessed 02/11/2023) (Fig. 2).

The metal structure of the lower chord 2 contains a dominant central long reinforcing rod 4 and a branched reinforcement rod 5 of smaller diameter at its ends, combined with the central long rod 4 by welded joints. At the same time, at the ends of the upper chord 1, transverse support elements are installed and secured, which consist of a plate 6 and a bent corner 7 welded to it, combined with profiled sheets of the upper chord 1 using combined spot welding (Fig. 5). In the support plate 6, under the convex corrugations of the profiled sheet, corresponding to the distribution and number of branches, there are holes through which the ends of the branched rod reinforcement 5 of the lower chord 2 are passed, which is bent and fixed by electric arc welding to itself, forming loops that are intended to connect the upper and lower belts. In the given example, the branched rod reinforcement 5 consists of five rods (Fig. 2)

To regulate the prestressing of the structure, it is possible to install a lanyard 8 in the lower belt 2 (Fig. 1, 2).

The intermediate transverse pillars 3 are made of a triangular lattice type and consist of an upper horizontal 9, a middle vertical 10 and two lateral inclined elements 11 made of steel corners, fastened together by welded joints (Fig. 4). Moreover, in the combined lower part of the fastened corners there is a hole for passing through it and fixing it using a welded connection of the transverse post 3 with a long reinforcing rod 4 of the lower chord 2.

The upper belt 1 of the spatial block of the covering, intended for large spans, is formed from profiled sheets, fixed at the transverse joints on the upper horizontal steel corners 9 of the intermediate transverse posts 3 using self-tapping screws 12 (Fig. 4).

To ensure spatial rigidity, between the intermediate transverse posts 3 there are braced elements 13 attached to them by welding in the form of steel corners (Fig. 1, 3).

The installation of the spatial coating block is carried out using bench technology.

Thus, the technical result achieved by the utility model is to expand the arsenal of long-span spatial covering structures with the ability to discharge water.

Claims (1)

A spatial block of a covering, including upper and lower chords of a convex curvilinear outline, bent in the longitudinal direction and connected to each other at the ends, and between the chords there are intermediate transverse posts rigidly connected to them, while the lower chord is made of rod reinforcement in the form of a metal structure equipped with a central long reinforcing rod and branched rod reinforcement of a smaller diameter, combined with the central long rod by welded joints, and the intermediate transverse posts are made of a lattice type of triangular shape from the upper horizontal, middle vertical and two lateral inclined elements in the form of steel corners, rigidly fastened together by means of welded connections, and the upper chord is formed from profiled sheets with a longitudinal arrangement of corrugations, and between the intermediate transverse posts there are diagonal elements attached to them by welding in the form of steel corners, characterized in that at the ends of the upper chord there are transverse support elements installed, which consist of a plate and a bent corner welded to it, combined with the profiled sheets of the upper chord using combined spot welding, in which, under the convex corrugations of the profiled sheet, holes are made through which the ends of the specified branched rod reinforcement of the lower belt are passed, which is bent and fixed by electric arc welding to itself, forming loops that are designed to connect the upper and lower belts.