RU66246U1 - PROFILE BUILDING - Google Patents

Abstract

A construction profile made of sheet material in the form of an incomplete equilateral trapezoid containing a small base and side walls, the lower edges of which are bent outward in a plane corresponding to the large base of the trapezoid, characterized in that the bent edges of the side walls end with an edge bent in the direction of the small base, moreover, the height of the bent edge is selected in the range from three to five face values of the thickness of the sheet material, and the angle between the plane of the bent edge and the side wall of the trapezoid is the angle between the side walls of the trapezoid and is selected within 30 ÷ 40 °. 1 P. f., 1 ill.

Description

The claimed technical solution as a utility model relates to the field of construction, in particular to the construction of elements used for the construction of construction objects made of sheet material in the form of a complex profile.

Various constructions of building elements are known, differing both in the material from which they are made and in the profile providing the greatest strength with minimal material consumption. The cheapest and most widespread are building elements made of sheet material by rolling and stamping. By imparting a pre-calculated shape to such a building element, the required bending and torsion strengths can be achieved without using expensive starting materials. In addition, building elements, as a rule, must be interfaced with the same or different elements, for example, by engagement with edges or bolting.

In the patent for the invention of the Russian Federation No. 2182632 [1], a shield formwork profile is described made of metal sheet material having a rectangular shape in cross section and provided with grooves for interfacing with other elements of this series. Such a profile, in addition to reducing metal consumption, facilitates the assembly and disassembly of the formwork. However, this design is not widespread due to the fact that its scope is very limited.

In the patents of the Russian Federation №№2136404 [2], 2136405 [3] and 2136407 [4] described, respectively, multi-beam, I-beam and corner construction profiles, designed to save metal when they

manufacture, while maintaining, however, the bearing capacity under conditions of longitudinal compression, torsion and bending. These advanced profiles, which have found application as supporting (supporting) structures, are not suitable, however, for use as roofing material or for the formation and cladding of walls or partitions.

Closest to the claimed utility model is the solution proposed in the RF patent for utility model No. 34886 [5], which describes the material for building elements based on steel galvanized or aluminized corrugated sheet profile in the form of conjugated rounded corrugations with flat sections located between the corrugations, in this case, a relationship was established between the design sheet thickness, the length of the flat sections and the height of the corrugations. The main disadvantage of the prototype [5] is the relatively low torsion resistance due to the length of the flat sections of the proposed building element.

The problem to which the claimed technical solution is directed is to develop such a construction profile that would combine increased strength and mating with other adjacent elements while maintaining a low cost.

The problem is solved by developing a building profile made of sheet material and having in cross section the shape of an incomplete isosceles trapezoid containing a small base and side walls, the lower edges of which are bent outward in a plane corresponding to the large base of the trapezoid, while the bent edges of the side walls end edge, bent in the direction of the small base, and the height of the bent edge is selected in the range from three to five nominal thicknesses of the sheet material, and the angle m between the plane of the bent edge and the side

the trapezoid wall is equal to the angle between the side walls of the trapezoid and is selected within 30 ÷ 40 °.

This form of the building element has, as shown by experiments, increased torsion resistance compared to the prototype [5] due to the rational combination of stiffeners and flat surfaces having a given ratio between width and thickness.

The experiments conducted suggest that in order to achieve maximum torsion resistance the claimed building profile must have linear dimensions at which the height of the trapezoidal profile is from 1.0 to 1.6 times the length of the large base of the trapezoid and the length of the lower bent edges of the side walls of the trapezoid is from 0, 5 to 0.8 the length of the large base of the trapezoid on one side of the trapezoid and from 0.8 to 0.95 the length of the large base of the trapezoid on the other side of the trapezoid.

For rigid connection of two or more adjacent building profiles in the bent edges of the side walls, holes are made that allow bolting. The design of the claimed building profile is clearly visible in the drawing below (see Figure 1).

Figure 1 shows a cross section of the claimed building profile, where h ₁ is the height of the trapezoid, h ₂ is the height of the edge, l ₁ is the width of the small (upper) base of the trapezoid, l ₂ is the width of the larger (lower) base of the trapezoid, l ₃ and l ₄ - the width of the bent edges of the side walls, l ₅ - the thickness of the sheet material from which the claimed building profile is made, β - the angle of deviation from the vertical of the sides of the trapezoid and the edges, 1 and 2 - holes for bolting the adjacent building profiles.

Experimental batches of the claimed profile were made of various sheet material, in particular, alloyed and unalloyed steels, glass and carbon fiber.

The experimentally obtained geometric and strength characteristics of the inventive profile made of unalloyed steel are shown in Table 1.

Table 1 Sheet thickness l ₅ mm Area F, cm ² U1 U2 Moment of inertia of the section Jx, cm ⁴ The moment of resistance of the section Wх1, cm ³ The moment of resistance of the section Wx2, cm ³ 1.6 10.78 9.2 8.77 521.14 56.5 59.4 2.0 13.47 651.46 70.6 74.3 2.5 16.84 814.38 88.2 92.9 2.8 18.86 912.16 98.8 104.0 3.0 20.20 977.35 105.9 111.4 3.5 23.57 1140.36 123.6 130.0 3.8 25.59 1238.20 134.2 141.2 4.0 26.94 1303.43 141.2 148.6 4.5 30.31 1466.57 158.9 167.2 5.0 33.67 1629.77 176.6 185.8

Claims (6)

1. A construction profile made of sheet material in the form of an incomplete equilateral trapezoid containing a small base and side walls, the lower edges of which are bent outward in a plane corresponding to the large base of the trapezoid, characterized in that the bent edges of the side walls end with an edge bent in the direction of the small base, and the height of the bent edge is selected in the range from three to five face values of the thickness of the sheet material, and the angle between the plane of the bent edge and the side wall of the trapezoid is n corner between the side walls of the trapezoid and is selected in the range of 30 ÷ 40 °. 2. The profile according to claim 1, characterized in that the length of the lower bent edges of the side walls of the trapezoid is from 0.5 to 0.8 of the length of the large base of the trapezoid on one side of the trapezoid and from 0.8 to 0.95 of the length of the large base of the trapezoid with the other side of the trapezoid. 3. The profile according to claim 1, characterized in that the height of the trapezoidal profile is from 1.0 to 1.6 the length of the large base of the trapezoid. 4. The profile according to claim 1, characterized in that the shelves are made holes that allow interconnected mating profiles to be connected by bolted connections. 5. The profile according to claim 1, characterized in that it is made of metal. 6. The profile according to claim 1, characterized in that it is made of composite material.