UA18593U - Wooden beam - Google Patents

Abstract

A wooden beam relates to building, in particular to building structures where one uses reinforced one-piece or glued wooden beams.

Description

Description of the invention

A useful model refers to construction, in particular to building structures in which 2 reinforced solid or glued wooden beams are used.

A wooden glued beam is known, which contains a glued package of boards, a layer of rubber, a protective layer in the form of a board, as well as metal fittings located under one of the faces of the strip having teeth. The teeth and the rubber layer are attached to the beam, and between the rubber layer and the protective layer there is a strip on which the board is fixed | see Russian patent

Mo2022109, publ. 30.10.1994).

But the known beam, firstly, is a complex structure, secondly, the presence of teeth leads to a weakening of the beam due to the fact that the most stressed wood fibers are cut, and thirdly, the known structure is intended for use under conditions of cyclic loads.

The closest to the useful model that is claimed is the construction of a wooden beam, in the body of which grooves are made along the beam. Reinforcement made in the form of metal rods is fixed in the indicated grooves. 12 The rods are fixed by monolithing with an epoxy composition | see Shuko V.Yu. Reinforcement of wooden structures in construction. Vla di mir. VTU 2002. p.165).

The design of this beam is chosen as a prototype.

The prototype and the claimed useful model have a common feature - a fixed armature.

But, with the help of metal rods fixed in the grooves, it is not possible to reinforce long-dimensional integral wooden beams. At the same time, individual rods do not correspond to the nature of the wood. As a result, the design according to the prototype does not have sufficiently high operational characteristics.

In addition, reinforcement with individual rods does not correspond to the nature of layer-by-layer gluing of wood, and therefore it is impossible to obtain solid modified wood in the process of gluing reinforcement and wood.

The basis of a useful model is the task of creating a structure in which, by making reinforcement from a different material and fixing the reinforcement in another place, to ensure an increase in strength and rigidity in the structure.

The task is solved in the design of a wooden beam containing fixed reinforcement by the fact that the reinforcement is made in the form of a mesh made of high-modulus material and fixed on the most stressed surface.

The novelty of the proposed useful model is that: Ше - the armature is made in the form of a grid made of high-modulus material; Ge") - a mesh made of high-modulus material is fixed on the most stressed surface.

In the declared utility model, an elastic metal mesh with a thickness of 1-2 mm or made of carbon fiber with a polycarbonate mesh, for example, from Zika Sagro Oig, or any other known high-modulus material, can be used as reinforcement. 3o In contrast to the prototype, the armature is fixed not in the grooves of the beam, but on the most stressed surface. B -- depending on the building structure in which a wooden beam is used, a metal grid made of high-modulus material can be fixed on: - the lower surface of a solid beam; " - the lower and upper surfaces of a solid beam; C - the lower surface of the glued beam; c - lower and upper surfaces of the glued beam.

From" A grid made of high-modulus material is fixed on the surface of a wooden beam and filled with a thick adhesive composition. This form of fixation leads to the fact that a layer of modified wood is formed under the reinforcement, which has increased strength and rigidity.

In this way, increased operational properties are provided both by the reinforcement itself and by the properties of the modified layer.

Ge | The drawing shows the construction of a wooden beam, which is declared, where:

Fig. 1 - a view of a solid beam with reinforcement fixed on the lower surface; and Fig. 2 - a view of a solid beam with reinforcement fixed on the lower and upper surfaces; (Te) 20 Fig. 3 - a view of a glued beam with reinforcement fixed on the lower surface;

Fig. 4 - a view of a glued beam with reinforcement fixed on the lower and upper surfaces. c" The claimed design is a wooden beam 1, which is made whole or glued from boards 2. On the most stressed surface of the beam 1 (lower, Fig. 1, C or lower and upper, Fig. 2, 4) reinforcement 3 is fixed.

Armature Z is made in the form of a grid of high-modulus material, for example, metal, or fiberglass, 29 or carbon fiber. Armature C is attached to the surface of wooden beam 1 using glue. c The beam structure is assembled in the following way.

Reinforcement with nails, staples, etc. is attached to the surface of a solid or glued wooden beam 1 (fastening elements are not shown in the drawing). After that, the armature C is glued with any thick glue, for example, epoxy glue. Due to the fact that reinforcement C is made in the form of a grid, a certain amount of glue 60 falls under reinforcement 3, and the rest - through holes in the wood. After thickening, a layer is formed that performs two functions: it holds reinforcement C and modifies the wood of the surface of beam 1.

The declared wooden beam has the following advantages in comparison with the prototype: a) high manufacturability - additional operations are excluded; b) provides an opportunity to develop a modified layer in the transverse direction at any angle; because c) the bearing capacity is increased by 70-8095 in comparison with the beam according to the prototype.

Claims (1)

The formula of the invention 5. . at. . A wooden beam containing fixed reinforcement, which is distinguished by the fact that the reinforcement is made in the form of a grid of high-modulus material and is fixed on the most stressed surface. - so (22) IS) s h- - s ;» - (ee) 1 o 50 syu» s 60 b5