EP1621699A1 - Vibration-proofing and heat-insulating means for a floating floor and floor structure with said means - Google Patents

Abstract

The vibration damping and thermal insulation element (1) for a floating floor comprises a foamed, compressed and then partially expanded polystyrene layer (2) provided with elastic bodies (4) of polyurethane foam fitted without a clearance into bores (3) in the layer. An independent claim is also included for a floor structure with the proposed vibration damping and thermal insulation element for buildings.

Description

The invention relates to a vibration damping and heat insulating means for a floating floor and a Bodenaubau using this means, specifically, to a vibration damping and heat insulating means for a floating floor, which has a favorable vibration damping effect and a favorable Wärmeisolierfähigkeit, and a floor structure using this agent.

(State of the art)

As an underground damping structure for the building near the tracks of a railway, such. As a subway, a subterranean damping structure is known, in which between the substrate 100 and a building 101, a concrete slab 102 and a consisting of a foamed to 30- to 40-fold volume polystyrene foam damper 103 are layered, as shown in Fig. 3, whereby the transmission of Schmiegungen from the substrate 101 is reduced to the building 101. However, this subterranean Dämpfungsaufbaü has the disadvantage that the damper 103 has a high dynamic spring constant, so that no sufficient effect to reduce structure-borne noise can be achieved.

To improve the soundproofing of the floor of the building, a floating floor structure is widely used in which on a concrete slab 110, a damper 111 and a plate of inorganic fiber such as glass wool, rockwool or the like are arranged as upstanding means 112, and on this plate concrete is arranged as a floating bottom layer 113, as shown in Fig. 4. However, if moisture is contained in the glass wool and the rock wool, the soundproofing is deteriorated. Before concreting on the job site, it is necessary to provide a watertight layer 114. Therefore, there is a problem that the number of operations increases, resulting in a longer construction time.

As a damper for solving the above problems, there has been proposed a damper which is formed by compressing a plate-shaped foam polystyrene which has been foamed and molded to 100 times to 170 times by volume so as to have a thickness of 5 to 20%, whereupon the pressurization is removed, whereby its thickness is restored to 30 to 90% (the original one). In this damper, the dynamic spring constant is 1 × 10 ⁶ to 40 × 10 ⁶ N / m ³ when the load is 200 to 2,000 kg / m ² , so that the dynamic spring constant of this damper is small. When this damper is used as a damper for the underground damping structure, the structure-borne sound transmission can be effectively prevented. The foam polystyrene is waterproof. If this is used as a damper or insulating 112 for a floating floor, so it is not necessary to provide a waterproof layer 114, so that a direct Concreting is possible, whereby the number of operations is reduced and also the construction time can be abbreviated (see, for example, Patent Literature 1)

• Patentliteratur 1: Jap. Pat.-Offenlegungsschrift Nr. 2001-193209
• Patentliteratur 2:
  Jap. Pat.-Offenlegungsschrift Nr. 2001-200629

For increasing the creepability when the load is large, a method is known in which in a floating floor structure which is formed such that on a bottom plate, a damper is arranged on which a bottom part is arranged, so that the load of the bottom part is supported on the damper by the bottom plate, wherein the damper consists of a foam body of a plurality of independent air bubbles, that between the bottom plate and the bottom part, a water-resistant, elastic body, which has a smaller creep than the foam body, are the elastic bodies are designed such that they support a load from the bottom part, by means of which the foam body is compressed and thus deformed (cf., for example, Patent Literature 2).

• Patent Literature 1: Jap. Pat. Laid-Open Publication No. 2001-193209
• Patent Literature 2:
  Jap. Pat. Laid-Open Publication No. 2001-200629

(Disclosure of the invention) (Problems to be Solved by the Invention)

However, in the damper of Patent Literature 1, there is a problem that the amount of creep deformation is large when the damper is used at a position where a high load of 2,000 kg / m ² or more is applied.

Although the amount of creep deformation can be reduced by the floor structure of Patent Literature 2. However, in this bottom structure, there is a problem that the elastic bodies shown in the embodiment are made of a natural rubber or a spring made of stainless steel, so that the elastic bodies form a thermal bridge, resulting in a lowering of the heat insulating ability.

An object of the present invention is to provide a vibration damping and heat insulating means for a floating floor structure having high vibration damping, creep resistance and heat insulating ability for floating floor construction, and a floor structure using this means in consideration of the above facts or problems.

(Means for solving the task)

The object is achieved by a vibration damping and heat insulating means for a floating floor, characterized in that the means with a damper which is formed by foaming a polystyrene foam body to 100- to 170-fold volume, and that molded body is compressed in the thickness direction, after which the pressurization is removed, whereby the thickness of 40 to 80% before compression is restored, so that the damper has a thermal conductivity of 0.05 W / m · K or less, a thickness of 10 to 150 mm and a dynamic spring constant of 1 x 10 ⁶ to 15 x 10 ⁶ N / m ³ , and with elastic bodies consisting of a polyurethane elastomer foam body, the a 1.2- to 5-fold elongation ratio, a thermal conductivity of 0.15 W / m · K or less and a dynamic spring constant of 1 x 10 ⁷ to 30 x 10 ⁷ N / m ³ , and in each case in such a thickness direction to the damper by these through holes formed are inserted without gaps, that they have a total opening area of 0.1 to 10% relative to the entire surface of the vibration damping and Wärmeisoliermittel provided.

In the vibration damping and heat insulating means for a floating floor, a damper composed of a polystyrene foam body which is foamed to 100 to 170 times by volume is used as the damper, and the molded body is compressed in the thickness direction, whereupon Pressurizing is restored, whereby the thickness is restored to 40 to 80% before compression, so that the polystyrene foam body has a thermal conductivity of 0.05 W / m · K or less, a thickness of 10 to 150 mm and a dynamic spring constant of 1 x 10 ⁶ to 15 x 10 ⁶ N / m ³ , so that structure-borne noise can be effectively damped.

In the vibration damping and heat insulating means for a floating floor, in elastic bores formed in the damper, elastic bodies made of a polyurethane elastomer foam body having a 1.2 to 5 times elongation ratio, a thermal conductivity of 0.15 W / m · K or less, and a dynamic spring constant of 1 x 10 ⁷ to 30 x 10 ⁷ N / m ³ , are used without a gap, so that the load from the bottom part by deformation of the compressed damper and the compressed elastic body, the creep deformation is smaller than that of the damper, can be accommodated, so that the amount of creep deformation of the vibration damping and Wärmeisoliermittels can be significantly reduced.

The elastic bodies made of the polyurethane elastomer foam body have a lower thermal conductivity than the elastic bodies made of natural rubber or stainless steel spring, so that the elastic bodies are prevented from forming a thermal bridge, thereby preventing a sufficient heat insulation can be achieved.

The damper-forming polystyrene foam body and the elastic body-forming polyurethane elastomer foam body are waterproof. If the vibration damping and heat insulating means for the floating floor is used as a damper or insulator means for the floating floor, it is not necessary to provide a waterproof layer, so that on a top of the vibration damping and heat insulating means concreting is possible, whereby the number of Operations for the floating floor is reduced and also the construction time can be shortened.

In a floor structure for which the vibration damping and heat insulating means according to the invention is used is on top of a floor panel for the roof or for the spaces of a building in which the Vibration damping and heat insulating has been laid, and is piled on the vibration damping and heat insulating a finished layer.

(Advantage of the invention)

In the vibration damping and heat insulating means of the invention for the floating floor, the structure-borne sound can be effectively damped by the damper, and the amount of creep deformation of the vibration damping and heat insulating means can be significantly reduced by the elastic bodies. The polyurethane elastomer foam body forming the elastic bodies has a thermal conductivity of 0.15W / m · K or less, so that the thermal conductivity of the elastic body forming polyurethane elastomeric foam body compared with that of the elastic body made of a natural rubber or a spring are made of stainless steel, is considerably low, whereby the fact that the polyurethane elastomer foam body forms a thermal bridge, occurring reduction of thermal insulation can be prevented. The damper forming polystyrene foam body and the elastic body forming polyurethane elastomer foam body are waterproof, so that it is not necessary to provide a waterproof layer, whereby on the top of the vibration damping and heat insulating agent, a Benonierung is possible, so the number of Operations for the floating floor is reduced and also the construction time can be shortened.

In the floor structure for which the vibration damping and heat insulating means for the floating floor, the vibration damping and heat insulating is laid between a bottom plate and a finished layer, so that the bottom structure has a favorable heat insulation and can isolate the vibrations against the bottom plate, even if on the finished layer machines or equipment, by the vibrations are generated are arranged.

(Preferred Embodiments of the Invention)

In the following an embodiment of the invention will be explained in more detail with reference to figures.

In Fig. 1, a vibration damping and heat insulating means 1 for a floating floor is shown. The vibration damping and heat insulating means 1 consists of a plate-shaped damper 2, which consists of a polystyrene foam body, and elastic bodies 4, which consist of a polyurethane elastomer foam body and are inserted into through holes 3 of the damper 2.

It is necessary that the damper 2 has not only a vibration isolating and a vibration damping characteristic but also a heat insulating capability. The damper 2 consists of a polystyrene foam body, which has a thermal conductivity of 0.05 W / m · K or less and a dynamic spring constant of 1 x 10 ⁶ to 15 x 10 ⁶ N / m ³ . The properties of such polystyrene foam body is prepared by a polystyrene foam body, for example, to 100- to 170-fold volume is foamed and molded, put on a press machine and that the molded body is compressed in the thickness direction for 2 to 60 minutes at a pressure of 10 to 100 N / cm ² so that its thickness becomes 5 to 20% of the original, whereupon the Pressing the molded body is removed, whereby the thickness of the molded body is restored from 40 to 80% before compression. When the mass load per unit area of the damper is 2100 to 3000 kg / m ² , with the dynamic spring constant of the damper 2 being 1 x 10 ⁶ to 15 x 10 ⁶ N / m ³ , the vibration isolating frequency band can be shifted to a low frequency range, and the vibration range to be damped can also be increased.

It is possible to set the damper 2 arbitrarily to a surface shape and area dimension. In the present embodiment, the damper 2 is formed in a rectangular shape with a side of 950 mm. When the damper 2 has a thickness of less than 10 mm, the vibration damping capability is lowered, and a good heat insulating capability is not expected either. Although the damper has a thickness of 150 mm or more, although the vibration damping and the heat insulating ability are increased, but the load capacity is lowered, so that the damper 2 is set to a value in the range between 10 mm and 150 mm.

By the damper 2 a plurality of extending in the thickness direction through holes 3 are enforced, which are arranged at a suitable distance from each other. The through holes 3 are determined such that they have a Total opening area of 0.1 to 10% over the entire surface of the vibration damping and heat insulating 1 have. In each through hole 3, an elastic body 4 is inserted. The through holes 3 s can be set to any number. However, it is desirable in the state where the plurality of vibration damping and heat insulating means 1 are laid, to arrange the through holes 3 with a certain distance from each other. The hole shape of the holes is adjustable to any shape. As shown in Fig. 1, it is possible to form the through holes in a rectangular hole shape. It is also possible to make these in a round shape or in other shapes. When the total opening area of the through holes 3 is less than 0.1% with respect to the entire surface of the vibration damping and heat insulating means 1, it is necessary to set the strength of the polyurethane elastomer foam body against compression to a high level in order to increase the load capacity. If this strength is too high, the transmission of structure-borne noise can not be suppressed, so that the vibration damping capability of the vibration damping and Wärmeisoliermittels is not sufficient. When the total opening area of the through-holes 3 exceeds 10%, the heat-insulating ability under the influence of the polyurethane elastomer foam body whose heat conductivity is higher than that of the polystyrene foam body deteriorates, so that it is desirable to have the entire opening area of the through-holes 3 0.1 to 10% relative to the entire surface of the vibration damping and heat insulating 1 set.

It is advantageous that the dynamic Federkanstante the elastic body 4 is set to 1 x 10 ⁷ to 30 x 10 ⁷ N / m ³ per unit area in order to achieve a favorable load capacity and vibration damping. In order to prevent the thermal insulation inability, the polyurethane elastomer foam body forming the elastic bodies 4 is foamed to 1.2 to 5 times by volume, so that the thermal conductivity of the polyurethane elastomer foam body 3 is set to 0.15 W / m · K or lower. The height of the elastic body 4 is set to a height equal to the thickness of the damper 2, so that the elastic bodies 4 are respectively mounted in the through-holes 3 in such a gapless manner that the elastic bodies 4 do not project outwardly from the through-holes 3.

Now, a floating floor structure 10 for which the vibration damping and heat insulating means 1 is used will be explained. As shown in Fig. 2, the floating floor structure is formed such that on the top of a bottom plate 11, a waterproof layer 12 is arranged as needed, that over substantially the entire surface of the top of the waterproof layer 12, a vibration damping and heat insulating 1 is laid, that at the periphery of the waterproof layer 12, a damper 2 is arranged as needed, and that on the entire top of the vibration damping and Wärmeisoliermittels 1, a finish layer 13 is arranged.

As the base plate 11 can be a Ortbetonteil, a concrete block, an ALC panel (ALC panel) and a factory-made concrete component will be used. If the floor construction for a place in the water can penetrate, such as roofs, kitchens od. Like. Is used, the known measures, such as asphalt moisture insulation, modified Asphaltfeuchtigkeitsisolierung (burner method), sheet waterproofing (the like)., Can be used for the waterproof layer 12.

For the finished layer 13 in situ concrete is mostly used. However, the finished layer 13 is not limited to in-situ concrete.

In the following, the invention will be explained in more detail by means of exemplary embodiments and comparative examples.

(Embodiment 1)

In the vibration damping and heat insulating means 1 for a floating floor shown in Fig. 1, a damper 2 is formed by foaming polystyrene 100 times by volume and molding in a size of 900 mm width x 1 800 mm length x 400 mm height is that the molded body is compressed so that its height is 20 mm (5%), whereupon the pressure impact is removed, whereby a height of up to 160 mm (40%) is restored, and that the molded body then in a Size of 900 mm wide x 900 mm length x 25 mm height is cut, whereupon in the center of the molded body as a damper 4, a through hole 3 is formed with a square of 90 mm. The elastic body 4 is a polyurethane elastomer foam body (manufactured by Getzner Materials, Austria, SYLONDYN NF) with 840 kg / m ³ density and 90 mm width x 90 mm length x 25 mm height used.

(Embodiment 2)

In the vibration damping and heat insulating means 1 for a floating floor shown in Fig. 1, a damper 2 is formed by foaming polystyrene to 170 times volume and having a size of 900 mm width mm x 1 800 mm length x 400 mm height is formed so that the molded body is compressed so that the height is 20 mm (5%), whereupon the pressurization is removed, whereby its height is restored to up to 160 mm (40%), and that the molded body then in a size of 900 mm width x 900 mm length x 25 mm height is cut, whereupon in the center of the molded body, a through hole 3 is formed with a square of 90 mm. As damper 4, a polyurethane elastomer foam body (manufactured by Getzner materials, Austria, Syromer P) with 500 kg / m ³ density and 90 mm wide x 90 mm in length x 25 mm height is used.

(Embodiment 3)

In the vibration damping and heat insulating means 1 for a floating floor shown in Fig. 1, a damper 2 is formed by foaming polystyrene to 170 times volume and having a size of 900 mm width mm x 1 800 mm length x 400 mm height is formed so that the molded body is compressed so that the height is 80 mm (5%), whereupon the pressurization is removed, whereby its height is restored to up to 320 mm (80%), and that the molded body then in a size of 900 mm width x 900 mm length x 25 mm in height, whereupon in the center of the molded body, a through hole 3 is formed with a square of 180 mm. As damper 4, a polyurethane elastomer foam body (manufactured by Getzner materials, Austria, Syromer V) with 650 kg / m ³ density and 90 mm width x 90 mm length x 25 mm height is used.

Comparative Example 1

In the vibration damping and heat insulating means 1 for a floating floor shown in Fig. 1, instead of the polyurethane elastomer foam body, a vibration-proof rubber (durometer hardness of 45 according to JIS K6253) is made of natural rubber of 90 mm width × 90 mm length × 25 mm height as the elastic body 4 used. Besides the rubber, Comparative Example 1 has the same construction as Embodiment 1.

(Comparative Example 2)

In the vibration damping and heat insulating means 1 for a floating floor shown in Fig. 1, instead of the polyurethane elastomer foam body, a vibration-proof rubber (durometer hardness of 45 according to JIS K6253) is made of natural rubber of 90 mm width × 90 mm length × 25 mm height as the elastic body 4 used. Besides the rubber, Comparative Example 2 has the same construction as Embodiment 2.

(Comparative Example 3)

In the vibration damping and heat insulating means 1 for a floating floor shown in Fig. 1, instead of the polyurethane elastomer foam body a vibration-proof rubber (durometer hardness of 45 according to JIS K6253) of natural rubber with 90 mm width x 90 mm length x 25 mm height used as the elastic body 4. Besides the rubber, Comparative Example 3 has the same construction as Embodiment 3.

The thermal conductivity of the elastic body 4 and the damper 2 is determined by a measuring method according to A1412-2 (Method of Measuring the Thermal Resistance Value and the Thermal Conductance of a Thermal Insulator - II: Heat Flow Measuring Method). The heat-insulating ability of the vibration-damping and heat-insulating means 1 is measured by the measuring method of JIS A1420 (method of measuring the thermal insulating ability of devices) and converted to a thermal conductivity. With respect to the measuring temperature, the average temperature is set to 25 ° C and the temperature difference to 20 ° C. The results are shown in Table 1. Table 1: Thermal conductivity of elastic bodies (W / mK) Thermal conductivity of the damper (W / mK) Thermal conductivity of the entire vibration damping and thermal insulation body (W / mK) Embodiment 1 00:11 0032 0032 Embodiment 2 00:08 0041 0041 Embodiment 3 00:10 0044 0044 Comparative Example 1 00:29 0032 0036 Comparative Example 2 00:29 0041 0052 Comparative Example 3 00:29 0044 0059

The dynamic spring constant is determined from a natural frequency obtained by the sinusoidal exciter method of JIS A6321. The load of 250 kg / m ² is applied to the damper 2 via a loading plate. The load of 1t / m ² is applied to the elastic bodies via a loading plate. The results are shown in Table 2.

The vibration damping capability is determined from a magnitude of the natural frequency of a vibration damping and heat insulating means 1 determined by the sine wave exciting method according to JIS A6321, on which a reinforced concrete plate having a thickness of 150 mm (and a basis weight of 360 kg / m ² ), assessed. The results are recorded in Table 2.

With respect to the pressure-resistant creep ability, the load of 2,000 kg / m ^{2 is} applied to the vibration damping and heat insulating means 1 according to Embodiment 1 and Comparative Example ¹ via a 900 mm x 900 mm load plate. The change of the four corners of the pallet is measured by a dial gauge. The measured value after one day should be assumed to be 0 mm. The average value of the measured values in seven days is to be regarded as creep deformation quantity. The results are recorded in Table 2. Table 2 dynamic spring constant of elastic bodies (x10 ⁶ N / m ³ ) dynamic spring constant of the damper (x10 ⁶ N / m ³ ) Natural frequency of vibration damping and heat insulation (Hz) Creep deformation amount (mm) Embodiment 1 270 3.8 21.5 0.7 Embodiment 2 81 4.0 18.5 - Embodiment 3 118 5.6 21.8 - Comparative Example 1 540 3.8 21.6 1.5 Comparative Example 2 550 4.0 24.0 - Comparative Example 3 550 5.6 25.5 -

As shown in Table 1, the thermal conductivity of the vibration damping and heat insulating means 1 according to Embodiments 1 to 3 is significantly lower than that Therefore, it can be seen from Table 1 that, by the measure, the elastic bodies 4 are made of a polyurethane elastomer foam body (manufactured by Getzner Werkstoffe, Austria, Syromer V) instead of the vibration damping and heat insulating agent of Comparative Examples 1 to 3 of vibration-proof rubber (durometer hardness of 45 according to JIS K6253) made of natural rubber, the thermal insulation performance can be increased abruptly.

As shown in Table 2, the natural frequency of the vibration-damping and heat-insulating means 1 according to Embodiments 1 to 3 is slightly lower than that of the vibration-damping and heat-insulating means of Comparative Examples 1 to 3. It is therefore apparent from Table 2 that the elastic bodies According to Embodiments 1 to 3 of the step of making the elastic body of a vibration-proof rubber (durometer hardness of 45 according to JIS K6253) of natural rubber, according to Comparative Examples 1 to 3, the same or better vibration damping effect can be obtained. Also, the amount of creep deformation according to Embodiment 1 is reduced to about half compared with Comparative Example 1. It can therefore be seen from Table 2 that the pressure-resistant creep performance is also improved.

(Brief explanation of the drawings)

• Fig. 1 shows an oblique view of the vibration damping and Wärmeisoliermittels in an embodiment according to the invention.
• Fig. 2 shows a section through the bottom structure in one Embodiment according to the invention.
• Fig. 3 shows a section through the underground attenuation structure according to the prior art.
• Fig. 4 shows a section through the bottom structure according to the prior art

(List of reference numerals)

1:

Vibration damping and thermal insulation means

2:

damper

3:

drillings

4:

elastic body

10:

floor structure

11:

baseplate

12:

waterproof layer

13:

finished layer

100:

underground

101:

building

102:

concrete slab

103:

Vibration damping and thermal insulation means

110:

concrete slab

111:

damper

112:

insulation

113:

soil layer

114:

waterproof layer

Claims (2)

Vibration damping and heat dispersing means for a floating floor,
characterized,
that means
with a damper formed by foaming a polystyrene foam body to 100 to 170 times volume, and compressing the molded body in the thickness direction, whereupon the pressurization is removed, whereby the thickness of 40% up to 80% before compression is restored, so that the damper has a thermal conductivity of 0.05 W / m · K or less, a thickness of 10 to 150 mm and a dynamic spring constant of 1 x 10 ⁶ to 15 x 10 ⁶ N / m ³ .
and with elastic bodies consisting of a polyurethane elastomer foam body having a 1.2- to 5-fold elongation ratio, a thermal conductivity of 0.15 W / m · K or less and a dynamic spring constant of 1 × 10 ⁷ to 30 × 10 ⁷ N / m ³ , and in each case are inserted without gaps in such in the thickness direction to the damper through this continuously formed through holes, that they have a total opening area of 0.1 to 10% relative to the entire surface of the vibration damping and Wärmeisoliermittels,
is provided. Floor construction for a building, being on the top a floor slab for the roof or for the rooms of a building, the vibration damping and heat insulating means according to claim 1 is laid, and on the vibration damping and heat insulating a finished layer is stacked.

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