SU1656089A1 - Bearing unit of wood beam - Google Patents

Abstract

The invention relates to construction and is intended for supporting structures for coatings of buildings and structures. The purpose of the invention is to increase the carrying capacity and durability. The assembly of the timber beam 1 includes a support plate 2 and rods 3 glued into the wood. The support plate is installed perpendicular to the plane of the support and the facade of the beam. There is a gap 4 between the upper edge of the plate and the lower plane of the beam. The glued rods 3 are U-shaped, set at an angle to the axis of the support and fixed to the supporting plate 2. The supporting plate can be made bent in the form of a half-cylinder and convex upward or downward. in the latter case, filling the cavity of the plate with a mortar-cement solution. An increase in the bearing capacity of the bearing assembly is achieved due to the shapes of the glued rods and the cylindrical support plate, and the increase in durability due to the gap between the support plate and the beam. 4 il. W fc

Description

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The invention relates to construction and is intended for supporting structures for coatings of buildings and structures.

The purpose of the invention is to increase the carrying capacity and durability.

1 shows a flat plate support assembly; figure 2 - section aa in figure 1; on fig.Z - knot bearing with a convex plate; figure 4 - node support with a concave plate.

The assembly of the timber beam 1 includes a support plate 2 and rods 3 glued into the wood. The support plate is installed perpendicular to the plane of the support and the facade of the beam. Between the upper edge of the plate 2 and the lower plane of the beam 1 there is a gap 4. The glued rods 3 are U-shaped, set at an angle to the axis of the support and fixed to the support plate 2. The support plate 2 can be made bent in the shape of a half-cylinder and protruded upwards or down with the filling in the latter case of the cavity of the plate polymer cement solution.

The assembly of the support assembly is carried out as follows.

In the body of the beam, with the help of a conductor, the holes are drilled with an inclination relative to the longitudinal axis of the beam and filled with glue mastic. Then, the ends of the U-shaped rods are inserted into them and pressed against the stop. After that, the lumen between the horizontal sections of the U-shaped rods and the base plate are welded. In this case, a gap is left between the upper edge of the plate and the bottom edge of the beam. When using curved plates, the rods are welded to them along the edges, either to the outer curved surface or along the edges.

The leg of the timber beam works as follows.

The support reaction is perceived by the lower edge of the support plate and transmitted through the glued rods to the solid wood of the beam. In the case of an action of force directed along the beam, additional forces appear in the glued rods. And from the side of effort

the rod is pulled out and pressed into the wood from the opposite side.

In the case of using a support plate bent along a cylindrical surface with its upward convexity, the support reaction causes the plate to work on stretching, which makes it possible to significantly reduce its thickness. When the base plate is orientated downwards, its thickness decreases due to reinforcement with a cheaper polymer mortar or concrete. The U-shaped shape of the rods allows to increase the flexural rigidity of the support plate, so that

as their horizontal portions are attached to the plates in welding and thus are included in the overall operation of the support plate, this also allows to reduce its thickness. As a result, an overall saving of metal at the reference node is achieved.

The presence of a gap between the bottom edge of the beam and the upper edge of the support plate provides good ventilation of wood in the area of the supporting part, which increases the durability of the beam and increases the operational reliability of the structure as a whole.

Claims (3)

1. Base of wooden beam, including support plate and rods glued into wood, characterized in that, in order to increase bearing capacity and durability, the support plate is installed perpendicular to the plane of the support and the facade of the beam with the formation of a gap between the upper edge of the plate and the bottom plane of the beam, and the rods are U-shaped, mounted at an angle to the axis of the support and fixed to the base plate. 2. A knob according to claim 1, characterized in that, in order to increase stability, the plate is made curved in the shape of a semi-cylinder and is oriented convex up. 3. The assembly according to claim 1, characterized in that, in order to increase stability and rigidity, the plate is curved in the shape of a semi-cylinder, oriented downwardly and the cavity of the plate is filled with polymer cement.