KR101538946B1 - Resilient material for preventing floor subsidence and structure for shutting out of floor impact sound having the same - Google Patents

Abstract

The present invention relates to a cushioning material for preventing floor settlement and a floor impact sound insulating structure comprising the same. The flooring-preventing cushioning material of the present invention comprises: a reinforcing layer having a predetermined width and disposed along a top edge of a bottom slab; And a buffer layer provided on the upper surface of the bottom slab so as to fill the inner side of the reinforcing layer, wherein the reinforcing layer and the buffer layer have different rigidities, and the stiffening layer has stiffness greater than that of the buffer layer.

Floor settlement, cushioning material, floor slab, rigidity, reinforced layer

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a sound absorbing material for preventing floor settlement and a floor impact sound insulating structure having the same,

The present invention relates to a cushioning material for preventing floor settlement and a floor impact sound insulating structure having the same, and more particularly, to a cushioning material for preventing floor settlement and effectively preventing a floor impact sound while suppressing settlement and a floor impact sound insulating structure will be.

In general, the floor impact sound insulation structure is used to absorb the impact energy of the impact sound applied to the floor, thereby reducing impact noise transmitted to the neighboring generation or lower layer.

1, the floor impact sound insulation structure 10 includes a cushioning material 14 provided on the upper surface of the floor slab 12, a wall insulating material 13 provided between the cushioning material 14 and the wall 11, , And a closed mortar layer (15) stacked on the cushioning material (14) and provided with a heating pipe (16).

The floor impact sound insulation structure 10 uses a soft material 14 having a low rigidity (dynamic elastic modulus) so as to shield radiated sound generated by the vibration of the bottom plate caused by the dynamic load. The cushioning material 14 is commonly used. The cushioning material 14 has a dynamic modulus of dynamic elasticity of 40 MN / m 3 or less and a loss coefficient of 0.1 or more and 10 or less. Here, the loss factor means the degree to which the object absorbs energy when a load is given. If the loss factor is large, the energy (vibration) is quickly absorbed to reduce the vibration, and if the loss factor is small, Let the vibration slow down.

However, since the cushioning material 14 has a low dynamic modulus of elasticity of 40 MN / m 3 or less, a heavy finishing mortar layer 15 stacked on the cushioning material 14 (100 kg / m 2 (Having cushioning material and flooring mortar layers laminated on the floor slab) due to the load of the floor impact sound, and the floor impact sound blocking performance is deteriorated due to the natural settlement of the floor impact sound. Particularly, as shown in Fig. 2, the edge portion of the bottom slab 12 is vulnerable to settlement as a portion subjected to concentrated load, and the edge portion of the cushioning material 14 sinks to cause a wobbling or a bad walking feeling of the bottom plate do. In addition to the weight of the closed mortar layer 15, there is also a problem that settlement of the bottom plate occurs due to a concentrated load generated by a heavy object among residents' household goods.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to prevent floor sag due to concentrated load generated by a heavy load mortar layer or a heavy object, And an object of the present invention is to provide a cushioning material and a floor impact sound insulating structure having the same.

According to an aspect of the present invention, there is provided a cushioning material for preventing floor settlement, comprising: a reinforcing layer having a predetermined width and disposed along a top edge of a bottom slab; And a buffer layer provided on the upper surface of the bottom slab so as to fill the inner side of the reinforcing layer, wherein the reinforcing layer and the buffer layer have different rigidities, and the stiffening layer has stiffness greater than that of the buffer layer.

On the other hand, it is preferable that the stiffness of the reinforcing layer is such that the dynamic modulus of elasticity is not less than 50 MN / m 3 and not more than 100 MN / m 3, and the loss coefficient is not less than 0.01 and not more than 10.

The buffer layer preferably has a dynamic modulus of elasticity of 40 MN / m 3 or less and a loss coefficient of 0.1 or more and 10 or less.

Preferably, the reinforcing layer comprises a polystyrene foam (foam).

Preferably, the buffer layer comprises a polyester-based mat.

The present invention provides a floor impact sound insulation structure including the above-described floor settlement preventing cushioning material.

The cushioning material for preventing floor settlement according to the present invention and the floor impact sound insulating structure provided with the cushioning material have the following effects.

First, the load of the finished mortar layer and the deflection of the bottom plate due to the concentrated load of the heavy article can be prevented.

Second, it prevents the bottom plate from sagging, so it is not affected by floor impact sound interception.

Third, the reinforcement layer with high dynamic modulus of elasticity and the buffer layer with low dynamic modulus of elasticity to prevent floor sagging can simultaneously prevent settlement and impact noise.

Fourth, the joining structure is simple and convenient to construct.

Fifth, since the width of the reinforcing layer to prevent the bottom settlement is designed to be variously designed according to the width and weight of the residence, it can be assembled with the buffer layer. Therefore, it is possible to design and construct selectively by reflecting the characteristics of the residence to be constructed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

FIG. 3 is a perspective view showing a floor impact sound insulation structure according to a preferred embodiment of the present invention, and FIG. 4 is a sectional view taken along line IV-IV 'of FIG.

The floor impact sound insulation structure 200 includes a floor slab 12 integrally formed with a wall 11 having a vertical surface and a bottom floor slab damping material 100 stacked on the floor slab 12 A wall insulating material 13 provided between the wall 11 and the floor cushioning preventing cushioning material 100 and a closed mortar layer 15 provided on the top of the cushioning material 100.

Since the floor slab 12, the wall insulating material 13, and the closed mortar layer 15 are conventionally used in a conventional floor impact sound insulating structure, a detailed description thereof will be omitted.

The cushioning material 100 is laminated on the floor slab 12 and is installed to effectively prevent the floor impact sound while preventing floor settlement.

The buffer material 100 includes a buffer layer 120 provided on the upper surface of the bottom slab 12 and a reinforcing layer 110 provided on the outer surface of the buffer layer 120. Here, the reinforcing layer 110 and the buffer layer 120 are formed to have different stiffnesses, and the stiffness of the stiffening layer 110 is preferably greater than the stiffness of the buffer layer 120.

The reinforcing layer 110 has a predetermined width and is installed along the upper edge of the bottom slab 12. That is, the reinforcing layer 110 has a rectangular donut shape with a space formed therein.

The reinforcing layer 110 preferably has a loss coefficient of 0.01 or more and 10 or less, and a stiffness is preferably a dynamic elastic modulus of 50 MN / m 3 or more and 100 MN / m 3 or less. If the dynamic modulus of elasticity exceeds 100 MN / m < 3 >, the rigidity is excessively high and the elasticity falls, so that the shock can not be absorbed. And can not withstand the concentrated load of the heavy article.

The thickness of the reinforcing layer 110 is preferably 10 mm or more and 50 mm or less. If the thickness is less than 10 mm, it is not preferable because it is too thin to absorb the impact, and if the thickness exceeds 50 mm, the workability and the like are inefficient and the layer height becomes larger than the impact energy absorbing effect.

Preferably, the stiffening layer 110 comprises a polystyrene foam (foam).

The buffer layer 120 preferably has a loss coefficient of 0.1 or more and 10 or less and a dynamic modulus of dynamic elasticity of 40 MN / m 3 or less.

The buffer layer 120 preferably has a thickness of 10 mm or more and 50 mm or less. If the thickness is less than 10 mm, it is not preferable because it is too thin to absorb the impact, and if the thickness exceeds 50 mm, the workability and the like are inefficient and the layer height becomes larger than the impact energy absorbing effect.

Preferably, the buffer layer 120 comprises a polyester-based mat.

The reinforcing layer 110 and the buffer layer 120 are formed to have the same thickness and are provided on the upper surface of the bottom slab 12 and a finishing mortar layer 15 is formed on the upper surface of the reinforcing layer 110 and the buffer layer 120 Respectively.

As a result, the reinforcing layer 110 having a large dynamic modulus of elasticity is disposed at the edge of the floor slab where concentrated load is generated, and the buffer layer 120 having the small dynamic modulus of elasticity is placed inside the reinforcing layer 110 And the floor impact sound can be blocked at the same time.

In the meantime, reference numeral 16 is a heating pipe installed inside the closed mortar layer.

In order to investigate the effect of preventing floor settlement of the floor impact sound insulation structure 200 having the above structure, a piano was installed on the floor impact sound insulation structure 200 having a predetermined area to measure the floor settlement. The result of the analysis is that the position of the end where the piano is placed is 4.5 mm. As a result, the position of the end where the piano is placed is measured to be 4.0 mm. In other words, it is verified that the analytical reliability is recognized as the analysis result and the experimental result are measured to be similar values.

5, the performance of the floor impact sound insulation structure 200 provided with the cushioning material 100 for preventing floor settlement according to the present invention will be described through comparison between the embodiment and the comparative example.

<Examples>

A bottom slab 12 having a width of 4.5 m and a width of 5.1 m is used for installing the cushioning material 100 in the bottom slab 12 having a density of 2000 kg / m 3, a rigidity of 2.4E10 N / A reinforcing layer 110 having a predetermined width is provided along the upper surface edge of the reinforcing layer 110 and a buffer layer 120 is provided inside the reinforcing layer 110. The reinforcing layer 110 has a thickness of 20 mm, a dynamic modulus of dynamic elasticity of 50 MN / m 3, and a loss factor of 0.15. The full thickness layer 120 has a thickness of 20 mm, a rigidity has a dynamic modulus of elasticity of 20 MN / m 3, and a loss factor of 3. At this time, a finishing mortar layer 15 having a density of 2300 kg / m3, a rigidity of 1.0E10N / m2 and a thickness of 40 mm was provided on the upper surface of the reinforcing layer 110 and the buffer layer 120, The piano (P), which was loaded with 133.3 kg in each of the legs (1), was installed at a position spaced 1 m in the longitudinal direction from the inner end of the reinforcing layer (120).

<Comparative Example>

A floor slab 12 having a width of 4.5 m and a height of 5.1 m is provided on the floor slab 12 having a density of 2000 kg / m 3, a rigidity of 2.4E10 N / On the upper surface, a buffer material 14 having a thickness of 20 mm, a dynamic modulus of elasticity of 20 MN / m 3 and a loss coefficient of 3 was provided. At this time, on the upper surface of the cushioning material 14, a finishing mortar layer 15 having a density of 2300 kg / m3, a rigidity of 1.0E10 N / m2 and a thickness of 40 mm was provided, ) The piano (P), which was loaded with 133.3 kg in three, was installed at a position 1 m apart in the transverse direction from the end of the floor slab, and then the floor settlement was measured.

division Floor sag Example 1mm Comparative Example 2mm

As shown in Table 1 and FIG. 6, the sound insulation structure 200 having the cushioning material 100 of different stiffness according to the present invention has a bottom deflection distance of 1 mm, and the sound insulation structure 200 having the conventional cushioning material 14 It can be seen that the floor deflection distance is 2 mm. That is, it can be seen that the floor deflection amount is recovered by 50% as compared with the case where the edge of the floor slab 12 in which the conventional concentrated load is generated is not reinforced.

As a result, the floor impact sound insulation structure 200 has a reinforcing layer 110 having a high dynamic modulus of elasticity to prevent floor sagging at the edge of the floor slab 12 where a concentrated load is generated, By providing the buffer layer 120 having a low dynamic modulus of elasticity, it is possible to simultaneously prevent sinking of the bottom plate and block the floor impact sound. The reinforcing layer 110 and the buffer layer 120 have the same thickness and are laminated on the bottom slab 12, so that the joining structure is simple and the construction can be made convenient.

The width of the reinforcing layer 110 provided on the upper edge of the bottom slab 12 is designed to be variously designed according to the width and weight of the residence and can be assembled with the buffer layer 120. Therefore, It should be understood that optional design and construction are possible.

It should be noted that the buffer layer 120 of the buffer material 100 has a single layer structure but the present invention is not limited thereto and if the buffer layer 120 is provided to prevent the buffer layer 120 from sinking, The buffer layer 120 may have a multi-layer structure.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.

1 is a cross-sectional view schematically showing a conventional floor impact sound insulation structure;

2 is a view showing a problem of sinking a cushioning material of a conventional floor impact sound insulation structure.

3 is a perspective view showing a floor impact sound insulating structure according to a preferred embodiment of the present invention.

4 is a sectional view taken along the line IV-IV 'of FIG. 3;

5 is a view for explaining a settlement state of a bottom plate provided with a cushioning material for preventing floor settlement according to a preferred embodiment of the present invention.

6 is a view showing an experimental result according to Fig.

Description of the Related Art

100: Cushioning preventing material for floor settlement

110: reinforced layer

120: buffer layer

200: floor impact sound insulation structure

Claims (7)

A reinforcing layer having a predetermined width and disposed along a top edge of the bottom slab; And And a buffer layer provided on an upper surface of the bottom slab so as to fill the inner side of the reinforcing layer, Wherein the reinforcing layer and the buffer layer are made to have different rigidities and the stiffness of the reinforcing layer is greater than the stiffness of the buffer layer. The method according to claim 1, Wherein the reinforcing layer and the buffer layer have the same thickness. The method according to claim 1, Wherein the stiffness of the reinforcing layer has a dynamic modulus of elasticity of 50 MN / m 3 or more and 100 MN / m 3 or less and a loss coefficient of 0.01 or more and 10 or less. The method according to claim 1, Wherein the buffer layer has a dynamic modulus of dynamic elasticity of 40 MN / m 3 or less and a loss coefficient of 0.1 or more and 10 or less. 5. The method according to any one of claims 1 to 4, Wherein the reinforcing layer is made of a polystyrene foam (foam). 5. The method according to any one of claims 1 to 4, Wherein the buffer layer is made of a polyester-based mat. A floor impact sound insulation structure as claimed in any one of claims 1 to 4.

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