SU771279A1 - Heat and sound insulating floor manel - Google Patents

Description

(54) THERMAL INSULATION INSULATION COVERING PANEL

I

The invention relates to the field of construction and can be used in floors to which increased requirements for heat and sound insulation are imposed.

A known heat and sound insulation panel consisting of reinforced concrete base plates and the floor and an insulating layer of rigid insulation between them 1. Support base plates and floors are interconnected by flexible discrete connections in the form of steel pins passed through the insulation and embedded in concrete . The pins are protected from corrosion, for example, by ethanol-enamel. There is no hard contact between the plates.

The disadvantage of such a panel is its low sound insulation, especially in the low frequency range.

The closest technical solution to the invention is an overlap panel comprising a base support plate with ribs, a floor slab, a core system consisting of flat frames connecting the base plate and floor reinforcement, and a heat and sound insulation layer placed between them.

The disadvantages of the famous panel are low sound insulation and low carrying capacity.

The purpose of the invention is to increase the carrying capacity and sound insulation of the panel.

The goal is achieved by the fact that in the heat and sound insulation panel of the ceiling, which includes a base support plate with ribs, a floor slab, a core system consisting of flat frames connecting the base plate reinforcement and the floor plate, between them a heat insulating layer, the frames interconnected in a structure consisting of consecutive regular pyramids with a square base placed in the edges of the base plate. In addition, the rigidity of the core system is less than the rigidity of the floor slab.

The overall rigidity of the structure is increased by the joint operation of the base plates 2 (j and the floor, rigidly interconnected by a structure, the rods of which perceive transverse shear forces and provide an increase in the bearing capacity of the structure.

Placing the structure nodes in the edges of the base plate leads to an increase in the shoulder of the inner pair, which perceives a bending moment. At the same time, the minimum overlap panel thickness is achieved, that is, the lower nodes of the core system are located outside the lower plane of the base plate, and the upper ones are monolithic in the floor slab.

An increase in the overall stiffness of the overlap panel leads to the placement of the cutoff frequency of the wave coincidence in the region of lower frequencies (beyond the lower limit of the normalized frequency range). According to the known relationship between the boundary frequency and the stiffness parameters of the panel

frp -gs V.

where lp is the limiting frequency of the wave coincidence; c is the speed of sound;

m is the surface density of the panel; B - bending stiffness; an increase in stiffness reduces the wave coincidence region by two to three times, where sound insulation is minimal, by 1 -1.5 octaves Down, i.e., into the frequency range below 100 Hz. This leads to increased sound insulation in the low-frequency region. The required insulation in the medium and high frequencies is provided by a layer of insulating material and a mass of base and floor plates.

FIG. 1 shows the proposed slab, general view; in fig. 2 - the same, cross section; in fig. 3 - fragments of the core system, the plan.

The overlap panel includes a base support plate 1, for example, of reinforced concrete, a floor slab 2, an intermediate insulating layer 3, for example, of polystyrene of type PSB, placed between the slabs. The plates 1 and 2 are interconnected by a core system consisting of flat frames 4 interconnected by a grid 5 placed in the fins 6 of the base plate 1. The ribs with monolithic nodes 7 are located outside the lower plane 8 of the base plate 1 in a mutually perpendicular direction. The frames 4 form a structure consisting of successively arranged regular pyramids with a square base embedded in the edges 6 of plate 1. Nodes 7 of the spatial core system are interconnected in plate 2

rebar 9, and in plate 1 - rebar 5.

Under the action of increased static and dynamic loads on the floor plate 1, shear forces are perceived by a core system of flat frames 4, which ensures the joint operation of all panel elements, including the base plate 1 and the floor plate 2. Due to the fact that the nodes of the core system are monolithic in the fins 6, located below the plane 8 of the base plate, the shoulder of a pair of internal forces is increased. The strength and stiffness of the whole structure increases, which makes it possible to use it under the action of increased loads.

An increase in the overall rigidity of the panel leads to an increase in its sound insulation in the low-frequency region, where, usually due to wave coincidence, the sound insulation of the floors is insufficient.

The use of the invention allows 0 to reduce the weight of panels by 20% compared with the known panels with equal sound insulation, reduce the consumption of concrete and steel by 30-40%, reduce the cost of panels by 10-20%.

Claims (2)

1. A heat and sound insulation slab, comprising a base support plate 0 with ribs, a floor slab, a core system consisting of flat frames connecting the base plate reinforcement and the floor slab, and a thermal insulation layer placed between them, that, in order to increase the carrying capacity of sound insulation, the frames are interconnected into a structure consisting of successively arranged regular pyramids with a square base placed in the edges of the base plate. 2. The panel according to claim 1, characterized in that the rigidity of the core system is less than the rigidity of the floor slab. Sources of information taken into account in the examination 1. USSR Author's Certificate 5 No. 150218, cl. E 04 C 1/40, 1951. 2. USSR author's certificate number 80517, cl. E 04 C 3/20, 1947.