RU217962U1 - Spatial block coverage - Google Patents

Abstract

The utility model relates to construction, namely to covering 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 large-span structures of spatial coatings by increasing the bearing capacity and due to the possibility of regulating the prestress in the entire structure. To achieve the technical result, a spatial block of the coating is proposed, including the upper (1) and lower (2) belts of a convex curvilinear outline, bent in the longitudinal direction and connected to each other at the ends, and between the belts there are intermediate transverse racks rigidly connected to them (3). At the same time, the lower chord (1) is made of bar reinforcement in the form of a metal structure, equipped with a central long-length reinforcing bar (4) and branched bar reinforcement of a smaller diameter (5), combined with a central long-length bar by welded joints. Intermediate transverse posts (3) are made of triangular lattice type from upper horizontal (9), middle vertical (10) and two lateral inclined elements (11) in the form of steel corners, rigidly fastened together by means of welded joints. What is new is that the upper chord (1) is formed from profiled sheets with longitudinal corrugations. Moreover, at the ends of the upper belt, transverse support elements are installed in the form of a channel (6), covering the profiled sheet and rigidly connected to it by welding. Between the shelves of the supporting channel (6) in its vertical part, holes are made evenly along the length, through which the ends of the branched rod reinforcement (5) of the lower chord are passed, made with thread and equipped with nuts (7) with an oblique washer (8), resting with a beveled edge on channel surface (6), which are designed to connect the upper and lower chords and to regulate the prestress in the entire structure. Between the intermediate transverse posts (3) there are diagonal elements (13) fixed to them by welding in the form of steel corners. 2 w.p. f-ly, 6 ill.

Description

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

Known spatial plate coating, including the upper and lower zones of a convex curvilinear outline, made of profiled sheet with a longitudinal arrangement of corrugations, in the supporting ends of the plate corrugations of the upper zone are placed in the corrugations of the lower zone and are connected to each other, and between the belts there are intermediate elements made of profiled thin-sheet strips attached by shelves to the shelves of the corrugations of the 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 in connection with the implementation of the belts and intermediate elements of the profiled sheet; secondly, a complex and time-consuming manufacturing technology due to the large range of structural elements; thirdly, the limited scope, due to the predominant use in spans of small and medium size, due to the insufficient bearing capacity for a large-span slab.

As a prototype, a spatial slab of a rarefied structure was adopted, including the upper and lower belts of a convex curvilinear outline, curved in the longitudinal direction, formed from long elements, equipped with tips with holes at the ends and connected at the supporting ends with a rod passed through the holes in the tips, and between intermediate transverse racks are rigidly fixed with belts. At the same time, the upper chord is made of strip wooden elements of rectangular section, equipped with tips, and the lower chord is made of bar reinforcement in the form of a metal structure, equipped with a central long-length reinforcing bar and branched bar reinforcement of a smaller diameter, connected by branched ends with tips in the form of a sleeve and combined with central long rod with welded joints. Intermediate transverse posts are made of lattice type of triangular shape from the upper horizontal, middle vertical and two side inclined elements in the form of steel corners, rigidly fastened together by means of welded joints (RF patent No. 213869 U1, priority date 04.05.2022, publication date 04.10.2022, authors: Grigoriev S.V. and others, RU, prototype).

The disadvantage of the prototype is the limited scope due to the lack of bearing capacity for large spans and the inability to control the prestress of the structure.

The technical problem solved by the utility model is the creation of a structure of a spatial pavement block with a variable span length and the ability to control the prestress in the entire structure.

To solve the technical problem, a spatial block of the coating is proposed, including the 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 in the form of a metal structure, equipped with a central long-length reinforcing bar and branched bar reinforcement of a smaller diameter, combined with a central long-length bar by welded joints, and intermediate transverse posts are made of a triangular lattice type from an upper horizontal, an average vertical and two side inclined elements in the form of steel corners, rigidly fastened together by means of welded joints. What is new is that the upper chord is formed from profiled sheets with a longitudinal arrangement of corrugations, and at the ends of the upper chord there are transverse support elements in the form of a channel, covering the profiled sheet and rigidly connected to it by welding, between the shelves of the supporting channel in its vertical part evenly along holes are made through which the ends of the specified branched rod reinforcement of the lower chord are passed, made with thread and equipped with nuts with an oblique washer resting with a beveled edge on the surface of the channel, which are designed to connect the upper and lower chords and to regulate the prestress in the entire structure, and between the intermediate transverse posts there are diagonal elements fixed to them by welding in the form of steel corners.

According to the utility model, the upper chord is formed from profiled sheets fixed at transverse joints on intermediate transverse posts along the span with the help of fasteners.

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

In FIG. 1 schematically shows a spatial block of the coating, general view; in fig. 2 - the same, bottom view; in fig. 3 - the same, 3D general view; in fig. 4 shows section A-A in FIG. 1; in fig. 5 shows node I in FIG. 1; in fig. 6 shows a section B-B in Fig. 4.

The inventive spatial block of the coating, having a lenticular shape of the longitudinal section, contains the upper 1 and lower 2 belts of a convex curvilinear outline, curved in the longitudinal direction and interconnected at the ends. Between the belts 1, 2, intermediate transverse racks 3 of the lattice type are located evenly along the span, connected to the upper 1 and lower 2 belts (Fig. 1). 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 on 09.10.2022). The lower belt 2 is made in the form of a metal structure made of bar reinforcement, in particular, hot-rolled reinforcement of class A240C (https://shop.optorg.ru/catalog/?cat_id=1188. viewed on 09.10.2022) (Fig. 2).

The metal structure of the lower belt 2 contains a dominant central long-length reinforcing bar 4 and branched at its ends, bar reinforcement 5 of smaller diameter, combined with a central long-length bar 4 by welded joints. The ends of the branched rod reinforcement 5 of the lower belt 2 are threaded for their connection with the ends of the upper belt 1. At the same time, at the ends of the upper belt 1, transverse support elements are installed and fixed in the form of channels 6, combined with profiled sheets of the upper belt 1 using spot welding (Fig. 3; Fig. 5). Between the shelves of the supporting channel 6 in its vertical middle part, evenly along the length and with an inclination to the surface, corresponding to the distribution and number of branches, holes are made through which the threaded ends of the branched rod reinforcement 5 of the lower belt 2 are passed, equipped with nuts 7 with an oblique washer 8 supported bevelled edge on the surface of the channel 6, designed to connect the ends of the upper and lower chords and to control the prestress in the entire structure. In the above example, the branched bar reinforcement 5 consists of five rods (Fig. 2, 3)

Intermediate transverse racks 3 are made of a triangular lattice type and consist of an upper horizontal 9, an average vertical 10 and two side inclined elements 11 made of steel corners, fastened together by means of welded joints (Fig. 4). Moreover, in the combined lower part of the fastened corners, a hole is made to pass through it and fix it with the help of a welded joint of the transverse rack 3 with a long reinforcing bar 4 of the lower belt 2.

The upper belt 1 of the spatial block of the coating, intended for large spans, is formed from profiled sheets fixed in 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 racks 3 are fixed to them by welding diagonal elements 13 in the form of steel corners (Fig. 1, 3).

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

Thus, the technical result achieved by the utility model is to expand the arsenal of large-span structures of spatial coatings by increasing the bearing capacity and due to the possibility of controlling the prestress in the entire structure.

Claims (3)

1. The spatial block of the cover, including the upper and lower belts of a convex curvilinear outline, bent in the longitudinal direction and connected to each other at the ends, and between the belts there are intermediate transverse racks rigidly connected to them, while the lower belt is made of rod reinforcement in the form of a metal structure , equipped with a central long-length reinforcing bar and branched bar reinforcement of a smaller diameter, combined with a central long-length bar by welded joints, and the intermediate transverse posts are made of a lattice type of a triangular shape from an upper horizontal, an average vertical and two side inclined elements in the form of steel corners rigidly fastened together by means of welded joints, characterized in that the upper chord is formed from profiled sheets with a longitudinal arrangement of corrugations, and at the ends of the upper chord there are transverse support elements in the form of a channel that surrounds the profiled sheet and is rigidly connected to it by welding, between the shelves of the supporting channel in its vertical holes are made evenly along the length of the part, through which the ends of the specified branched rod reinforcement of the lower chord are passed, made with thread and equipped with nuts with an oblique washer resting with a beveled edge on the surface of the channel, which are designed to connect the upper and lower chords and to regulate the prestress in the entire structures, and between the intermediate transverse struts there are diagonal elements fixed to them by welding in the form of steel corners. 2. Spatial coating block according to claim 1, characterized in that the upper chord is formed from profiled sheets fixed at transverse joints on intermediate transverse posts along the length of the span with the help of fasteners. 3. Spatial coating block according to claim 1, characterized in that hot-rolled bar reinforcement of class A240C is used in the metal structure of the lower chord.

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