RU176508U1 - STEEL CONCRETE STAND - Google Patents

Abstract

The utility model relates to the field of construction, namely, to composite racks and can be used in structural elements that work mainly on compression. The result is achieved by the fact that the steel-concrete stand is made of profiles forming a composite cross-section with an inner ring, the cavities and the tubular part of which are filled with concrete. For the formation of a cross-section with the inner ring, bent C-shaped profiles with perforated and stamped wall studs, bent in the middle of the wall are paired along the joint plane with stamped studs entering mutually formed holes from stamping of adjacent profiles. Mating bent profiles along the walls can also be welded. To improve the joint work of the concrete shell and the steel profile, studs are stamped in the walls of the profiles, which increase the adhesion of concrete to the steel profile. To improve the work of concrete in compression, and the resulting tubular part of the cross section in tension, the slots from the stamped studs are oriented along the ring. The proposed steel concrete rack in comparison with the known solutions has increased bearing capacity, stability and provides a reduction in material consumption and simplification of manufacture.

Description

The utility model relates to the field of construction, namely to racks of a composite section and can be used in structural elements that work mainly on compression.

A steel-concrete stand is known, including a steel pipe, the cavities of which are filled with concrete [see a / s of the USSR No. 104647, class E04C 3/36, 1955].

The disadvantage of this steel-concrete strut is the reduced adhesion of concrete to the steel profile, which is ensured only by friction and, as a consequence, the reduced bearing capacity of the composite strut.

Known steel concrete stand, including steel rolling profiles and a concrete core, in which steel rolling profiles are connected to profiled sheets and limit the concrete core around the perimeter (see RF patent No. 2122083, E04C 2/28, 1998).

The disadvantage of steel-concrete racks is: profiled sheets are arranged corrugated across the element, which increases the deformability of the cage in the longitudinal direction, and as a result, the overall reduced bearing capacity of the rack.

The closest is a steel concrete stand containing a steel cross-sectional profile and a concrete core (see RF patent No. 117475, Е04С 3/30293, publ. 27.06.2012, bull. No. 18).

The disadvantages of the support rack are the material consumption of the steel part, the complexity and busyness, because rolling brands with a steel core must first be fixed on a template, then connected to electric welding, as well as reduced bearing capacity due to the lack of effect of pipe concrete.

The utility model is aimed at reducing material consumption and laboriousness, at increasing the overall bearing capacity of a steel concrete rack of steel cold-formed C-shaped profiles forming a cross-section with an inner ring.

The result is achieved in that in a steel-concrete stand including steel bent profiles of C-shaped section with walls with stamped studs having concrete according to the utility model, bent C-shaped profiles bent along the height of the wall along a circular arc are paired with each other along the joint planes due to bends of stamped studs mutually entering into formed holes from stamping. Joint work of C-shaped profiles can also be achieved by connecting them along the longitudinal edges of the contact planes by welding. The pairing of the bent profiles thus forms a cross-section with the inner ring.

In FIG. 1 depicts a steel-concrete strut consisting of profiles forming a composite cross-section with an inner ring and with monolithic concrete; in FIG. 2 a section A-A of FIG. one; in FIG. 3 is a perspective view of a pairing fragment of C-shaped profiles with perforation and stamped pins; in FIG. 4 section BB of FIG. 1, in FIG. 5 a section BB of FIG. 1, in FIG. 6 node "G" connecting the walls of the C-shaped bent profiles (Fig. 3).

Steel-concrete stand includes bent steel bent profiles 1 (Fig. 3, 4, 5) and concrete monolithic 2 (Fig. 1, 2 and 5). To ensure the joint work of C-shaped profiles 1, studs 4 are stamped in its walls (Fig. 3), which are inserted into the formed holes from the stamping of paired adjacent profiles 1 and bent tightly to the walls of the adjacent profile (Figs. 3a, 6). C-shaped profiles 1 can be connected along the longitudinal edges of the contact planes by welding 7 (Fig. 3b). To improve the joint work of the concrete shell 2 and the steel profile 1, studs 5 are stamped in the walls of the profile 1 (Fig. 3), which increases the adhesion of the concrete shell 2 to the steel profile 1 (Fig. 4, 5). The resulting slots 6 from the stamped studs 5 are oriented along the ring of walls, thereby improving the work of the resulting pipe in tension, concrete in compression.

In the factory, first perform hole punching, slots and stamping of the studs 4 and 5, then the C-shaped profiles 1 are bent along the middle of the wall height along a circular arc, paired with each other along the junction planes, inserting the studs 3 into the formed holes from the stamping and bending tightly tightening the walls.

After the preparatory procedures, the tubular part and the side cavities (Fig. 1, 2) of the cross-section of the strut are monolithic.

This embodiment of the rack allows to reduce the busyness and the complexity of its manufacture and increases the stability and overall bearing capacity due to the appearance in the section of the pipe-concrete part of the steel-concrete rack. The steel concrete stand has, along with increased bearing capacity, also reliability, reduced material consumption.

Claims (4)

1. Steel-concrete stand, including steel bent profiles forming a cross-section and concrete monolithic, characterized in that the walls of the C-shaped profiles are bent along an arc of a circle and joined together to form an inner ring. 2. Steel-concrete stand according to claim 1, characterized in that in the walls of the profile profiles bent along the arc, the studs are stamped outward with the formation of slits in the ring, moreover, the ends of the studs are bent. 3. Steel-concrete stand according to claim 1, characterized in that the bent C-shaped profiles are paired with each other along the junction planes due to the bends of the stamped studs mutually entering the holes from the stamping. 4. Steel-concrete stand according to claim 1, characterized in that the bent C-shaped profiles along the junction planes are paired with each other for welding inside the ring and outside the cross-section.

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