KR20060135146A - Floor structure for insulating multi-level impact sound, and fixture apparatus thereof - Google Patents

Abstract

A floor structure for reducing inter-story impact sound, and a fixture for an inter-story buffering member for the same are provided to basically solve a problem of a heavy impact sound hard to be relieved in a conventional floating floor. A floor structure for reducing inter-story impact sound, in a well-known floating floor structured for reducing a floor impact sound from an upper part by placing an inter-story buffering member(3) on a concrete slab structure(2), comprises a dedicated vertical connecting member(1). The vertical connecting member interconnects an upper concrete structure(100) and a lower concrete structure(200), which are separately cast with the inter-story buffering member disposed therebetween. A fixture for a buffering member for the floor structure comprises a buffering member pressing plate and a fill-in head part. The buffering member pressing plate has a flat board form to be mounted in contact with an upper surface of the inter-story buffering member. The fill-in head part is protruded over the buffering member pressing plate, to be put in the concrete cast in the upper part of the inter-story buffering member.

Description

Floor Structure for Insulating Multi-Level Impact Sound, and Fixture Apparatus Thereof}

1 is a diagram showing a cross-sectional structure of a conventional general floating floor structure.

2 is a diagram showing the device configuration used in the experiment for examining the weight impact sound attenuation performance of the existing floor structure.

3 is a diagram showing the results of the experiment in the form of a graph.

Figure 4 is a cross-sectional view showing the configuration of the floor structure for reducing the inter-layer impact sound of the present invention.

Figure 5 is a perspective view showing a preferred embodiment of the vertical connecting body used in the floor structure of the present invention.

FIG. 6 is a cross-sectional view taken along line AA ′ of FIG. 5.

7 is a view illustrating a conventional general interlayer cushioning fixture and a floor structure using the same.

 Explanation of symbols on the main parts of the drawings

1: up and down connector, the interlayer cushioning material fixture of the present invention

10: buffer material pressing plate 15: fixed needle

20: buried head 25: flange

2: slab structure 3: interlayer buffer

4: bubble concrete 5: finishing mortar

100: upper concrete structure 200: lower concrete structure

H: fixed hardware

The present invention relates to a floor structure for reducing the floor noise and vibration of the building floor slab, and an interlayer cushioning fixture for effectively implementing the same, and more particularly, in the conventional floor structure for preventing floor noise. As an interlayer floor structure of a building that can fundamentally solve the problem of weight impact sound, which is difficult or rather aggravated, and an interlayer buffer fixing device for realizing the same, it is basically fixed and firmly fixed between the layer buffers. The present invention relates to an interlayer cushioning material fixing device capable of connecting the upper and lower concrete structures so as to be integrated to obtain a reduction effect on weight impact sound.

Recently, with the rapid industrial development and economic growth, the demand for buildings is increasing and land prices are continuously increasing. As a result, office buildings, etc., which are constructed in urban areas with high land prices, tend to become high-rise as a way to use land efficiently. In order to solve this problem, multi-family housing such as apartments and multi-family homes is widely used. However, in the case of these multi-story buildings, the upper floor and the lower floor ceilings share the same floor slab between the upper and lower generations, and accordingly, various noises generated in the upper floor are transmitted to the lower floor through the interlayer slab, thereby making the living of others. There is a problem that interferes with the work.

Therefore, various studies have been conducted in the past to solve the noise and impact sound problems as described above, and the method most commonly applied as the floor structure for reducing the impact noise between the slab structures and the upper plastering mortar layer is present. Typical so-called floating floors have been provided in which an interlayer cushioning layer is provided, whereby interlayer noise can be blocked. Figure 1 shows a general cross-sectional structure of the conventional floating floor structure as described above, as shown in Figure 1, which is installed on the slab structure (S) with a cushioning material having a good sound insulation and shock absorbing to install an interlayer buffer layer (F) Lightweight foamed concrete (C) and ondol plastering mortar (M) was cast thereon to prevent the impact energy applied from the upper part to be directly transmitted to the slab structure. In addition, as the interlayer cushioning material to be constructed in such a floating floor structure, various materials such as rubber-based mats, urethane foams, glass wool, etc., including synthetic resin materials such as EPS, EPE, EPP, and EVA are used. It is constructed about 10-30 mm.

However, the floor structure as described above basically cushions the impact from the top by its elastic deformation due to the material properties of the interlayer buffer material, and the floating floor structure is KS F 2810 or Japanese Industrial Standard (JIS 1419). Although it shows some effect on the light impact sound defined by), etc., it is confirmed that not only does it show a significant reduction effect but also a weighting property in solving the heavy impact sound that causes problems in real life. In other words, it can be seen that this energy is almost transferred to the slab structure as the materials such as ondol plaster, foam concrete, and interlayer buffers, which are existing floor structures, do not efficiently attenuate the energy due to the weight impact. will be.

In order to investigate the weight impact sound attenuation performance of the existing floor structure, the present inventors designed an experimental apparatus as shown in FIG. 2 and tested the performance of the existing floating floor structure. In the above experiments, the reduction performance for the weight impact sound was tested on EVA products, which are representative interlayer buffers, and KS No. 2 styrofoam, which are mandatory to use by the insulation standard. Specifically, interlaminar buffers are installed in the upper part of the concrete plate manufactured in the dimensions of 3,000 × 1,000 × 150, each with a thickness of 20 mm, and foamed concrete and plaster mortar are poured to a predetermined thickness to prepare a test body, and then the standard weight impact The vibration acceleration value was measured by excitation as a sound source, and the result was compared with the results of experiments using only concrete slab without using cushioning material.

Figure 3 shows the results of the above experiments in the form of a graph, as can be seen from the case, when tested by applying the interlayer buffer, both buffers used in the test, unlike the general expectation In comparison with the concrete slab test, the impact noise reduction effect was not found to be much larger. In addition, the results in the band below 250Hz, which is particularly problematic in weight impact sound, showed little difference in the degree of impact sound reduction or increased in some bands as compared with the case without applying the interlayer buffer.

As such, the result of the increase in the weight impact sound due to the installation of the interlayer buffer may be confirmed in the test data presented below. Table 1 and Table 2 below show the results of the actual test at the construction site for various types of shock absorber products used in Korea. It is confirmed that it is increasing.

In addition, Table 3 below shows the test results for the weight impact sound conducted by POSCO E & C Disaster Prevention Test Institute.In this case, it is better to place foam concrete by the thickness instead of installing the cushioning material in terms of reducing the weight impact sound. I could confirm it.

As shown in the above experimental results, in the case of the existing floating floor structure, in which the interlayer cushioning material is laid on the top of the slab structure to reduce the noise and impact, it is effective in reducing the weight impact sound compared to the slab structure without the interlayer buffering material. It can be seen that there is no or rather adverse action. This is in contrast to the general perception that floor impact sound will be reduced by the interlayer buffer material. According to this, the floating floor structure, which is currently applied in general, is very vulnerable to heavy impact sound, and the need for improvement is urgently needed. As a result of the effort to find the solution, the inventors have been able to find the cause of the increase in the weight shock sound due to the installation of the cushioning material and to present the present invention as described below.

The present invention was devised to overcome the weakness of the weight impact sound in the existing floating floor structure, specifically, the present invention by connecting the upper and lower concrete structures that were separated and laid by the interlayer buffer in the existing floating floor structure It is a technical problem to be solved to provide an improved floor structure which can effectively reduce the occurrence of heavy impact sound by making it act integrally.

In addition, the present invention as an interlayer buffer fixing device that can effectively implement the floor structure provided by the present invention as described above, by constantly modifying the structure of the interlayer buffer fixing fixture that was previously used only as a means for fixing the interlayer buffer between the interlayer Another technical problem is to provide a new interlayer buffer fastener having both the fixing means for the interlayer buffer and the effect of reducing the weight impact sound by acting as a connecting body for integrating the foam concrete and the slab structure placed above and below the shock absorber. .

In order to achieve the technical problem as described above, the floor structure for reducing the impact sound between the floors provided by the present invention is to spread the floor cushioning material on the concrete slab structure of the building so as to reduce the floor impact sound from the top. In the above, the upper concrete structure and the lower concrete structure can be integrated with each other by installing separate upper and lower connecting bodies interconnected between the interlayer cushioning material and the lower concrete structure at predetermined positions on the floor plane. Its basic technical features are made possible.

At this time, in the configuration of the present invention, the upper and lower connections may be configured such that the upper side is embedded in the upper concrete structure, the lower side is fixed to the lower concrete structure by a fixing hardware, which is also a preferred configuration One of the features of the invention. Furthermore, the present invention is a more preferable configuration for the floor structure of the present invention as described above, the upper and lower connecting bodies for connecting the upper and lower concrete structures integrally at the lower end of the cushioning material pressing plate provided at the same time horizontally Is installed to contact the upper surface of the interlayer cushioning material and the cushioning material press plate provides a floor structure configured by using a vertical connecting body which is fixed by a fixed steel embedded in the lower concrete structure through the interlayer cushioning material up and down.

In addition, in order to achieve the above technical problem of the present invention, the present invention provides a new type of interlayer buffer fastener, which includes: a cushioning material press plate having a flat plate shape so as to be in contact with an upper surface of the interlayer buffer material; The interlayer buffer member is configured to include a buried head portion protruded to the upper portion of the cushioning material pressing plate to be embedded in the interior of the concrete placed on the interlayer cushioning material is characterized in that the basic configuration.

 At this time, the buried head portion in the interlayer shock-absorbing fixture of the present invention may be made in the form that the inside is empty and the top is open. In addition, the buried head portion may be formed in the form of a light-receiving narrower than the width of the upper portion of the upper portion, it is more preferably configured to form a protruding flange to the outside of the buried head portion.

The floor structure of the present invention having the above configuration, by the existing floating floor structure that was intended to absorb the impact using the interlayer cushioning material to find out the cause that was ineffective or rather increased for the impact sound weight to solve the problem It is provided as a means, the main technical features that the present invention is distinguished from the prior art is the upper concrete structure (mainly, foam concrete + finishing mortar) and the lower concrete structure (slab) which was placed up and down separately on the basis of the conventional interlayer cushioning material By installing a vertical connecting body connecting the structure), the upper and lower concrete structures to be able to act integrally. Accordingly, in the case of the floor structure according to the present invention, the weight impact energy applied from the upper portion can be more effectively dissipated by vibrating the upper and lower concrete structures separately placed by the interlayer cushioning material during the weight impact, thereby causing the weight impact sound An effect that can be effectively reduced can be obtained.

In connection with this feature of the present invention, the inventors have shown through the various test data presented above that the floor impact structure to which the conventional interlayer buffer is applied does not reduce or rather increase the weight impact sound than the general structure without using the interlayer buffer. It has been found that there is a difference from the general notion that the impact sound will be reduced by the installation of the present invention. As a result, the present inventors have tried to find the reason and can explain the cause as follows.

In other words, the general floor structure, which does not use the floating floor structure in the past, is the slab structure, foam concrete, and ondol plaster mortar is integrated and behaves as one mass as a whole, so the energy due to the weight impact is the three parts (slab + bubble Con '). c + plaster mortar) causes the combined mass to behave simultaneously to create vibrations.

However, in the floating floor structure provided with the interlayer buffer material, the lower slab structure and the foamed concrete / mortar layer on the upper layer are separated from each other without being integrated with each other, so that the upper structure of the buffer material (foamed concrete + mortar) and the lower slab are separated. The structures must vibrate individually to dissipate impact energy. However, in the floating floor structure, the foamed concrete / mortar is simply placed on the upper of the cushioning material, so that it is not substantially restrained by the building structure, and thus only vibrates and hardly dissipates the floor impact. Accordingly, the weight impact energy is almost reduced without attenuation. It is transferred to the floor slab (of course, the impact energy is absorbed somewhat by the self-deformation of the interlayer buffer, but it is weak if sufficient thickness is not obtained). Therefore, in the conventional floating floor structure as described above, when the mass of the same amount of energy should be limited to only the lower slab structure, the vibration of the slab becomes larger, and thus the weight impact sound is increased as compared with the case where no interlayer buffer is installed. Will occur.

Therefore, in the present invention, the foam concrete / mortar layer of the upper and the slab structure of the lower by the installation of the interlayer buffer material as described above, paying attention to the adverse effect on the dissipation surface of the impact energy, the upper and lower concrete The structure is configured to effectively dissipate the weight impact sound by vibrating integrally by connecting the structure with a vertical connecting member which is a separate member.

Hereinafter, the present invention will be described in more detail with examples in which the inventive concept as described above is preferably implemented. However, this is intended to enable those skilled in the art to more clearly understand and easily practice the present invention, not to limit the scope of protection of the present invention in advance.

Figure 4 is a cross-sectional view showing the configuration of the floor structure for reducing the inter-layer impact sound of the present invention, Figure 5 is a perspective view showing a preferred embodiment of the vertical connecting body used in the floor structure of the present invention, Figure 6 It is sectional drawing along the A-A 'line | wire of 5. Referring to FIG. 4, the floor structure for reducing the impact sound between the floors of the present invention is to spread the floor shock absorber 3 on the concrete slab structure 2 of the building as a whole. The structure is a basic configuration, but separate the upper and lower connecting body (1) to interconnect the upper concrete structure 100 and the lower concrete structure 200, which is placed up and down separately with the interlayer cushioning material (2) therebetween. It can be seen that by installing the upper concrete structure 100 and the lower concrete structure 200 to be integrated with each other. At this time, the upper and lower connecting body 1 is installed by installing a plurality of predetermined positions on the floor plane, the installation interval may vary depending on the specific site situation, but it is appropriate to install at about 1m intervals.

Figure 4 (a) shows a state in which the present invention is applied to the most common structure of the existing floating floor structure, in the case of laying the interlayer buffer (3) on the slab structure (2) in the case of a lightweight bubble thereon After the concrete (4) and the ondol plaster mortar (5) is poured to the floor structure, Figure 4 (b) is another construction example after pouring the foam concrete (4) on the slab structure (2), The structure in which the interlayer buffer 3 and the plaster mortar layer 5 are formed thereon is shown. In the present invention, the slab structure 2 as the lower concrete structure 100 and the foamed concrete 4 and the plaster mortar 5 as the upper concrete structure 200 are separated by the interlayer buffer 3 in the present floating structure. The upper and lower connectors 1, which are separate members, are installed to interconnect each other (see FIG. 4 (a)), wherein the upper and lower connectors 1 are fixed to the lower concrete structure 100 at the lower part thereof. The upper part is fixed to the upper concrete structure 200 to allow the upper and lower concrete structures 100 and 200 to be integrally behaved.

Here, the upper and lower connecting bodies 1 are required to be made of a material having sufficient rigidity to satisfy the function as a connecting body to connect the upper and lower concrete 100, 200 to integral behavior, such as As the material, steel, synthetic resin, or the like may be preferably used. In addition, various methods may be applied to the fixing of the vertical connecting body, but preferably, the upper side of the vertical connecting body 1 is embedded in the upper concrete structure 200, as shown in FIG. The side can be fixed to the lower concrete structure 100 using a fixing hardware (H), such as a tacker or anchor bolt.

In addition, the specific shape and installation state of the up and down connector (1) can also be easily modified by those skilled in the art without particular limitation within the range to satisfy the basic function as described above, in the present invention Figures 3 and 4 As shown in FIG. 1, a form having a function of not only functioning as a vertical connector but also a function of an interlayer buffer member fastener is shown as a preferred embodiment of the vertical connector 1.

Figure 5 is a perspective view showing a preferred embodiment of the vertical coupling in the present invention, as shown in Figure 5 the interlayer cushioning fixture provided in the present invention, basically, can be installed in contact with the upper surface of the interlayer buffer. A cushioning material pressing plate 10 having a flat plate shape so as to be provided; It is configured to include; a buried head portion 20 formed to protrude to the upper portion of the cushioning material pressing plate 10 so as to be embedded in the concrete poured over the interlayer buffer.

That is, in the case of the embodiment shown in Figure 5, it is basically an interlayer shock absorber fixture used to fix the interlayer cushioning material installed on the concrete slab structure of the building, in the present invention by constantly deforming such an interlayer buffer fastener Beyond the original function of the fixing of the interlayer cushioning material is implemented to have a function as a vertical connector for reducing the interlayer noise of the present invention as described above.

For the description of such an interlayer buffer fastener of the present invention, referring to the conventional general interlayer buffer fasteners, as shown in Figure 7, the conventional interlayer buffer fastener (P) is generally in the form of a round disc A plurality of pointed fixing needles P2 protrude from the lower portion of the cushioning material pressing plate P1, and in fixing the interlayer buffer S2 using the conventional cushioning material fixture P, the slab S1 is placed on the slab S1. After pressing the conventional cushioning material fixture (P) on the laid interlayer buffer (S2) was a tacker (tacker; H) from the top to be firmly fixed to the slab (S1) structure.

On the other hand, the present invention, as shown in Figures 5 and 6, after being installed by further integrally forming the buried head portion 20 on the upper portion of the buffer material pressing plate 10 in the conventional general interlayer buffer fixture as described above The buried head portion 20 is characterized in that the present invention is distinguished from the prior art in that it is configured to be embedded in the upper concrete structure. In addition, in installing the interlayer cushioning material fastener 1 of the present invention as described above, as shown in FIG. 4, the fastener 1 of the present invention is disposed on the upper part of the interlayer cushioning material 3, and fixed with the lower concrete structure 100. Fixing by using the hardware (H), and installed on top of it to be embedded therein by placing a lightweight foam concrete (4), finishing mortar (5) and the like as the upper concrete structure (200). At this time, the fixing hardware used to fix the interlayer cushioning fixture (1) of the present invention can be selected and used in the form of securing a sufficient fixing force among the various types of fasteners commonly used in the construction field For example, such as a tacker shown in FIG. 4A or an anchor bolt shown in FIG. 4B may be preferably used.

As described above, in the case of the floor structure made using the interlayer cushioning material fixture 1 proposed in the present invention, the concrete structures placed above and below the interlayer cushioning material 3 are integrally connected and behave together so that the weight is lower than the existing flooring structure. Since the impact energy can be effectively dissipated, the slab vibration and the weight impact sound can be reduced. In particular, when using the interlayer cushioning fixture (1) of the present invention, the interlayer cushioning fixture (1) of the present invention performs a role as a vertical coupling in the above-described floor structure of the present invention in the existing construction method Compared with no additional process, it is possible to easily implement the floor structure for reducing the floor impact provided by the present invention without increasing the workload and construction period.

On the other hand, according to the interlayer cushioning fixture 1 shown in Figs. 5 and 6, it can be seen that the buried head portion 20 is formed in the form of a hollow inside and an open top in the shape. According to such a configuration, the interlayer cushioning material fastener of the present invention can maintain a more stable installation state by filling the buried foam concrete or the finishing mortar from the upper portion into the buried head portion 20. In addition, more preferably, the shape of the buried head portion 20 may have a shape of an ordinary light narrowing (上 廣 下 狹) by making the upper width larger than that of the lower width as shown in the figure. By doing so, concrete (or mortar) can be easily introduced into the buried head portion 20, so that there is an advantage that the filling can be performed tightly without empty space.

Furthermore, the upper side of the buried head portion 20 may further form a flange 25 protruding outward, by forming the flange 25, the interlayer buffer fixing device 1 of the present invention is formed in the upper portion. The effect of increasing the restraint on the concrete structure 200 can be obtained. In addition, the flange 25 may also serve as a marker for indicating the height at which the lightweight foam concrete 4 to be placed on the interlayer buffer 3 is disposed, thereby installing a separate height indicator. It can also be expected that the construction can be performed at the exact pouring height without the need.

Although the present invention has been described in detail with reference to the described embodiments, those skilled in the art to which the present invention pertains will be capable of various substitutions, additions and modifications without departing from the technical spirit described above. It is to be understood that such modified embodiments also fall within the protection scope of the present invention as defined by the appended claims below.

According to the floor structure of the present invention described in detail above, the impact energy can be more efficiently dissipated by interconnecting the bubble concrete and the concrete slab, which are separated and laid by the interlayer buffer in the existing floating floor structure, to be integrated with each other. It is possible to effectively reduce the occurrence of the weight impact sound.

In addition, according to another feature of the present invention, by constantly modifying the structure of the interlayer buffer fasteners that were previously used only as a means for fixing the interlayer buffer, the connection for integrating the foam concrete and the slab structure placed above and below the interlayer buffer material By functioning as a sieve, it is possible to obtain the effect of reducing the floor impact sound only by fixing the interlayer cushioning material without any additional process.

Claims (8)

In a well-known floating floor structure in which an interlayer cushioning material is laid on a concrete slab structure of a building to reduce the floor impact sound from the top, Floor structure for reducing the impact sound between the floor, characterized in that by installing a separate up and down connecting body connecting the upper concrete structure and the lower concrete structure to be disposed between the interlayer cushioning material at predetermined positions on the floor plane. The floor structure of claim 1, wherein the upper and lower connecting bodies are buried in the upper concrete structure, and the lower side is fixed to the lower concrete structure by a fixing iron. According to claim 2, wherein the lower end of the upper and lower connections is provided with a cushioning material pressing plate horizontally, the cushioning material pressing plate is installed to contact the upper surface of the interlayer cushioning material, the cushioning material pressing plate penetrates the interlayer cushioning material up and down to lower concrete Floor structure for reducing the inter-layer impact sound, characterized in that fixed by a fixed hardware embedded in the structure. In the interlayer shock absorber fixture used to fix the interlayer buffer material installed on the concrete slab structure of the building, A cushioning material pressing plate having a flat plate shape so as to be installed in contact with an upper surface of the interlayer cushioning material; A buried head portion protruding to an upper portion of the cushioning material pressing plate so as to be embedded in the concrete poured on the interlayer buffer material; Interlayer shock absorber fixture for reducing the interlayer impact sound comprising a. The method of claim 4, wherein the buried head portion of the interlayer shock absorber fixture for reducing the impact sound of the interlayer, characterized in that the interior is made of an open shape. The method of claim 4 or 5, wherein the buried head portion interlayer shock absorber fixture for reducing the impact sound between layers, characterized in that the upper width is formed in the form of a light beam narrower than the lower width. The method of claim 4 or 5, wherein the buried head portion is an interlayer shock absorber fixture for reducing the impact sound of the interlayer, characterized in that is further formed with a flange protruding outward. The method of claim 4 or 5, wherein the lower portion of the buffer member pressing plate interlayer cushioning material fasteners for reducing the impact sound of the interlayer, characterized in that the pointed needle is formed protruding.

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