RU2029843C1 - Device to reinforce beam and girder floor in a building - Google Patents

Abstract

FIELD: repair and reconstruction of buildings. SUBSTANCE: device has flexible tie-rods fixed on walls of a building to enable tension adjustment, and tie fixtures. Tie-rods are placed at two levels, one of them is placed over beams, and the other is placed under beams. The tie-rods are directed to beam axes at 45 - 135° angle. Tie fixtures connect adjacent tie-rods at different levels and are placed in space between beams of the floor at equal distances to adjacent beams. The tie-rods of different levels may be located at equal or varied angles to beam axes in the plane. EFFECT: reliable reinforcement of beams. 3 cl, 4 dwg

Description

 The invention relates to construction, in particular to structures used to strengthen beam ceilings in the repair and reconstruction of buildings.

 Known devices for reinforcing beam ceilings, allowing by changing their design scheme to redistribute the load on the beams. These devices include runs installed in one or two directions, as well as struts, tie-rods or support columns [1].

 The disadvantages of these devices are their high material consumption and the complexity of their installation. At the same time, individual beams are not combined into a common system that allows the beams to work together and partially redistribute concentrated loads among themselves.

 It is also known a device for reinforcing beam ceilings, containing nurse-mounted clamps made of sheet steel and additional elements made of asbestos-cement channel, installed on a spacer between the beams. The device includes beams in joint work and allows to reduce the "fluctuation" of the overlap [2].

 The disadvantages of this device are its low efficiency and complexity associated with the need to manufacture and install a large number of special clamps and channels.

 Closest to the proposed device in technical essence is a device for reinforcing beam overlap, including flexible braces located along the axes of the beams and fixed on supports with the ability to adjust tension, as well as coupling devices for tightening the ends of adjacent braces [3]. This device has a simple design and can significantly increase the bearing capacity of each beam.

 The disadvantage of this device is that it effectively enhances multi-span beams, but does not provide the joint operation of adjacent floor beams.

 The objective of the invention is the creation of a design that allows you to effectively strengthen the beam ceilings during the repair and reconstruction of buildings with low metal consumption, ease of installation and reliability.

 The technical result that can be obtained by implementing the inventive device is the creation of such a load-bearing overlapping system in which all the beams work together, and thanks to flexible tightenings, concentrated loads are redistributed between the individual beams, as well as between the beams and walls. In addition, the overall rigidity of the building is significantly increased by creating a single prestressed floor structure.

To achieve the technical result, in a device for reinforcing beam ceilings, including flexible puffs mounted on supports with the possibility of adjusting the tension, and coupling devices for tightening adjacent puffs, the puffs are located in plan at an angle of 45-135 ^о С to the axes of the beams, mounted on the walls buildings and are located in two levels, one of which is located above the beams, and the other under the beams. Coupling devices connect puffs of different levels and are located in the inter-beam space at equal distances from neighboring beams.

 Puffs of different levels can be placed at the same angles or at different angles in terms of the axes of the beams.

All the essential features of the claimed invention are directly related to the achievement of the technical result. In particular, the location of the puffs in plan at an angle of 45-135 ^о С to the axes of the beams allows connecting one or more overlapping beams with each other by puffs. Placing puffs in two levels and connecting puffs of different levels together make it possible to create an effective truss structure that redistributes concentrated loads between individual beams and partially transfers them to the walls. The location of the clamping devices in the inter-beam space at equal distances from adjacent beams provides optimal conditions for the static work of flexible reinforcement and its greatest efficiency. Placing puffs of different levels at the same or different angles in terms of the axes of the beams makes it possible to rationally arrange the puffs taking into account the construction of the walls of the building, and also to distribute the thrust forces transmitted to the longitudinal and transverse walls.

In FIG. 1 - Wooden buildings with a device for amplification, wherein the tightening of both levels are at an angle ^of 90 to the axes of the beams, top view; in FIG. 2 - a design variant in which the puffs of both levels are located at the same angles (45-135 ^about ) in plan to the axes of the beams; figure 3 - embodiment, in which the puffs of different levels are located at different angles in plan to the axes of the beams; figure 4 is a section aa in figure 1.

A device for reinforcing beam ceilings (figure 1) contains flexible puffs 1, mounted on the walls 2 and connected by clamping devices 3. The puffs 1 (figure 4) are located in two levels, one of which is located under the beams 4, and the other above the beams 4. Coupling devices 3 tighten the adjacent tightenings 1 of the upper and lower levels. The clamping devices 3 are made adjustable, for example, in the form of clamps with a pair of screw-nut, with the help of which the tension of the puffs is created and their joint work with the beams 4 on the perception of local loads is ensured. The clamping devices 3 are located in the inter-beam space at equal distances from the adjacent beams 4. The tightening 1 of the upper and lower levels can be located at the same angles in plan to the axes of the beams, for example 90 ^about (figure 1) or 45-90 ^about (figure 2 ) In the embodiment (2) 1 puff fixed not only on the transverse walls 2, but also on the longitudinal walls 5. Tightening 1 upper and lower levels may be positioned at different angles in the plan (e.g., ^about 45, respectively, and ¹³⁵⁾ relatively the axes of the beams 4 (Fig. 3). In this case, the puffs 1 are also fixed on the walls 2 and 5.

 The installation of the device to strengthen the beam floor is as follows.

 After complete or partial disassembly of the floor structure and removal of the inter-beam filling, holes are made in the transverse walls 2 or in the transverse walls 2 and longitudinal walls 5 to pass and fasten the flexible puffs 1, which are placed in two levels relative to the beams 4: under the beams (lower level puffs) and above the beams (puffs of the upper level). After fixing the puffs 1 on the walls 2 and 5, clamping devices 3 are installed, for example, clamps with gaskets and nuts, covering adjacent puffs 1 of two levels. The clamps are located between the beams 4 at equal distances from adjacent beams. By adjusting the clamping devices 3, the flexible puffs 1 are tensioned, forming together with the beams 4 a single prestressed floor structure in which local concentrated loads are perceived not by a separate beam, but by the entire floor, which significantly reduces its deformability ("fluctuation"), and also increases the overall rigidity of the building due to the creation of horizontal hard drives.

Claims (3)

1. DEVICE FOR STRENGTHENING THE BUILDING ROOF COVERING OF THE BUILDING, including flexible puffs fixed on supports with the possibility of adjusting the tension, and coupling devices for tightening adjacent puffs, characterized in that the puffs are located in plan at an angle of 45 - 135 ^o to the axes of the beams, mounted on the walls buildings and are located in two levels, one of which is located above the beams and the other under the beams, while the clamping devices are connected to puffs of different levels and are located in the inter-beam space at equal distances from the neighbor their beams.  2. The device according to claim 1, characterized in that the puffs of different levels are located at the same angles in terms of the axes of the beams.  3. The device according to claim 1, characterized in that the puffs of different levels are located at different angles in plan relative to the axes of the beams.

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