JP2024065328A - Waterproof and soundproof structure - Google Patents

Abstract

[Problem] The object of the present invention is to solve the problems of the prior art, that is, to provide a waterproof and soundproofing structure in which the portion through which the pipes pass is less complicated than the prior art and which has both waterproofing and soundproofing properties. [Solution] The waterproof and soundproofing structure of the present invention is a structure installed in a room where water is used, which suppresses sound transmitted to the floor below, and comprises a vibration-proof slab, a waterproof slab, and a vibration-proof side wall. The vibration-proof slab is placed on top of the floor slab of the water utilization room, and the waterproof slab is placed above the vibration-proof slab with a distance so that a space is formed. The vibration-proof slab is composed of a planar floor vibration-proof material and holding concrete, and the waterproof slab is composed of a foundation slab, an upper waterproof material, and holding concrete. [Selected drawing] Figure 1

Description

Application for application of Article 30, Paragraph 2 of the Patent Act filed. ・Completion and delivery of Hotel Resol Trinity Naha (November 30, 2021). ・Sales of the DVD of the academic lecture summary at the 2022 Annual Meeting of the Architectural Institute of Japan (Hokkaido) began (July 20, 2022). ・Presentation on Environmental Engineering at the 2022 Annual Meeting of the Architectural Institute of Japan (Hokkaido) (September 7, 2022).

This invention relates to sound insulation technology for rooms that use water, such as bathrooms and equipment washing rooms, and more specifically, to a waterproof sound insulation structure in which the waterproof layer and vibration-proof layer are separated into an upper slab and a lower slab.

When choosing a hotel, inn or other lodging facility, guests may pay attention not only to the price and food, but also to the facilities that are unique to that facility. Bathrooms in particular are becoming increasingly important when choosing lodging facilities, and there is a tendency to prefer so-called panoramic baths located on relatively high floors. For this reason, the number of lodging facilities with panoramic baths has been increasing in recent years.

In bathrooms such as panoramic baths, waterproofing is naturally done on the floor and walls. Also, there are cases where guest rooms are located on the floor below the panoramic bath, in which case noise control is also necessary in addition to waterproofing. Usually, hot water supply pipes and drainage pipes are laid through the floor of the bathroom, so in such cases it is unavoidable that the waterproofing measures, noise control measures, hot water supply pipes, drainage pipes, etc. will end up being a complex and intricate structure. Therefore, various technologies have been proposed to simplify such complex structures as much as possible.

For example, Patent Document 1 proposes a technology in which a unit bath is basically supported by a floating floor, but a missing portion of the floating floor is formed near the piping, and then the knitted bath is supported by multiple support legs. Patent Document 2 proposes a technology in which a recess is formed in a concrete slab, a space-retaining member is placed on the top surface of the recess, and a plate-shaped member is placed on the space-retaining member to form a space, and the piping is housed within that space.

JP 2009-24373 A JP 2021-88819 A

The technologies disclosed in Patent Documents 1 and 2 are both structures that combine waterproofing with soundproofing (soundproofing) performance, but because they are intended for relatively small bathrooms such as unit baths, the high level of soundproofing required for, for example, music halls cannot be expected.

Where a high level of quietness is required, such as in music halls, karaoke booths, or homes near airports where measures must be taken, a floating soundproofing structure may be used. This floating soundproofing structure is made up of vibration-proofing material and a floating soundproofing layer supported by this material, and has the advantage of attenuating sound and vibrations and blocking transmitted sound.

If there are guest rooms below, such as an observation bath, a considerable degree of sound insulation is required, so it is possible to adopt the floating sound insulation structure described above. Also, in order to secure space for the placement of hot water pipes, drainage pipes, etc., it is possible to use a double slab structure for the floor as shown in Figure 13. Figure 13 is a cross-sectional view (cross-sectional view cut along a vertical plane) that shows a schematic diagram of a structure that has waterproofing and sound insulation performance, with a double slab floor that uses a floating sound insulation structure. This diagram shows an observation bath from which the view can be seen from the window, and is equipped with a bathtub, washing area, and machine room.

The floor portion in Figure 13 is formed by an upper slab SU and a lower slab SL, with a space provided between the upper slab SU and the lower slab SL, which is used to house the hot water pipe PS and the drain pipe PD. In addition, a soundproof layer LP is placed on the upper level of the upper slab SU, and a waterproof layer LV is placed on the lower level. This soundproof layer LP is a floating soundproof structure made of planar vibration-proof material and holding concrete, as shown in Figure 13(b).

The structure shown in Figure 13 allows the hot water pipe PS and the drain pipe PD to be housed, and by making the sound insulation layer LP a floating sound insulation structure, noise such as the sound of a shower head or a bathtub falling can be suppressed. However, because the sound insulation layer LP and the waterproof layer LV are placed on the upper slab SU, the hot water pipe PS and the drain pipe PD penetrate the sound insulation layer LP and the waterproof layer LV at the same position. The arrangement of these penetrations is extremely complicated, and its construction is extremely troublesome and requires a considerable amount of time and effort. Furthermore, while it is desirable to seal the waterproof layer LV so that water does not pass through, it is desirable to separate the sound insulation layer LP from the building structure, resulting in a structure that is, so to speak, contradictory.

Generally, a load-receiving material made of synthetic resin (e.g., rubber) is installed under a vertical wall, and conventionally, a rectangular load-receiving material (so-called square rubber) has been used as shown in FIG. 14. FIG. 14 shows a conventional load-receiving material RS, where (a) is a plan view from above showing a situation in which many load-receiving materials RS are arranged, and (b) is a plan view from above showing a panel-shaped vibration-proof material PV into which the load-receiving materials RS are fitted. As shown in FIG. 14(a), many load-receiving materials RS made of square rubber need to be installed in a line under the vertical wall, which requires considerable work and time. In addition, in order to manufacture the vibration-proof material PV shown in FIG. 14(b), it is necessary to first cut out the panel-shaped vibration-proof material PV, fit the square rubber load-receiving material RS into the cutout, and then apply masking tape around the load-receiving material RS, which also requires considerable work and time.

The objective of the present invention is to solve the problems of the conventional technology, that is, to provide a waterproof and soundproofing structure that has both waterproof and soundproofing properties and has a structure where the pipes pass through is less complicated than conventional structures.

The present invention is a two-layer slab structure consisting of an anti-vibration slab and a waterproof slab, with a sound-proofing layer on the anti-vibration slab and a waterproof layer on the waterproof slab, and is based on an entirely new idea.

The waterproof soundproofing structure of the present invention is installed in a room where water is used (hereinafter referred to as the "water use room") and is a structure that suppresses sound transmitted to the floor below the water use room, and is equipped with a vibration-proof slab, a waterproof slab, and vibration-proof side walls. The vibration-proof slab is placed on the floor slab of the water use room, and the waterproof slab is placed above the vibration-proof slab with a distance so that a space is formed. The vibration-proof side walls rise from the upper surface of the vibration-proof slab and support the vibration-proof slab. The vibration-proof slab is composed of a planar floor vibration-proof material and a holding concrete laid on the upper side of the floor vibration-proof material, and the waterproof slab is composed of a foundation slab, an upper waterproof material laid on the upper surface of the foundation slab, and a holding concrete laid on the upper side of the upper waterproof material.

The waterproof soundproofing structure of the present invention may also be one in which the vibration-proof slab includes a vertical load-receiving material. This vertical load-receiving material is laid on the downward projection surface of the vibration-proof side wall and is made of an elastic material with vibration-proofing properties. The vertical load-receiving material is preferably in the form of a strip and laid as a continuous piece below the vibration-proof side wall.

The waterproof soundproofing structure of the present invention can also have a vibration-proof side wall that includes a horizontal load-receiving material. This horizontal load-receiving material is laid on the wall surface facing the vertical wall of the water-use room, on the side projection surface of the waterproof slab, and is made of an elastic material with vibration-proofing properties.

The waterproof soundproofing structure of the present invention can also be one in which the vibration-proof slab includes a horizontal load-bearing material. In this case, the horizontal load-bearing material is laid on the end face of the vibration-proof slab that faces the vertical wall of the water-use room.

The waterproof soundproofing structure of the present invention may also be one in which the vibration-isolating side walls include a planar wall vibration-isolating material. In this case, the wall vibration-isolating material is laid in the portion in which the horizontal load-receiving material is not arranged. The waterproof soundproofing structure of the present invention may also be one in which the vibration-isolating side walls include a waterproof layer.

The waterproof soundproofing structure of the present invention can also be one in which the vibration-proof slab includes a waterproof layer. This waterproof layer is composed of a lower waterproof material and a holding concrete laid on top of the lower waterproof material.

The waterproof soundproof structure of the present invention has the following effects.
(1) The structure of the portion through which the pipe passes and the outer wall portion is simpler than that of the conventional structure. As a result, the construction of the corresponding portion can be easily performed.
(2) The waterproof slab is sealed to prevent water from passing through, and the soundproof slab is cut off from the floor slab of the water use room, achieving both high waterproofing and high soundproofing performance.
(3) By using a belt-shaped load-bearing material, the load-bearing material can be installed more easily than in the conventional method shown in FIG.

FIG. 1 is a cross-sectional view showing a typical example of an observation bathroom that uses the waterproof soundproofing structure of the present invention. 4A is a cross-sectional view showing a schematic of an anti-vibration slab, a waterproof slab, and anti-vibration side walls at both ends, and FIG. 4B is a cross-sectional view showing a schematic of an anti-vibration slab, a waterproof slab, and anti-vibration side walls at both ends and in the middle. (a) is a cross-sectional view showing a schematic of a vibration-isolating slab in which a floor vibration-isolating material is laid on the upper surface of the floor slab, and (b) is a cross-sectional view showing a schematic of a vibration-isolating slab in which a waterproof layer is placed between the floor slab and the floor vibration-isolating material. FIG. 2 is a cross-sectional view showing a schematic diagram of a vibration-isolating slab including a vertical load-receiving member. 1 is a cross-sectional view showing a schematic diagram of a resin panel placed on the upper surface of a vertical load-receiving member having grooves and irregularities on both sides. The upper part of the bathroom is equipped with a band-shaped direct load support material, and the lower part is equipped with vibration-proof side walls. This is a plan view of the bathroom from above. Schematic cross-sectional view of a waterproof slab. A partial cross-sectional view showing a schematic of a vibration-isolating side wall to which the end of a waterproof slab is connected. FIG. 2 is a partial cross-sectional view showing a schematic view of a vibration-proof slab including a horizontal load-receiving member. A frequency response diagram showing the results of measuring a sound source placed in the observation bath before the bathtub was filled with water. A frequency response diagram showing the results of measurements taken on the floor below when a bathtub was dropped onto a PC panel. A frequency response diagram showing the results of measurements taken on the floor below when a shower head was dropped onto a PC panel. 1A is a cross-sectional view showing a structure that employs a floating soundproofing structure and has a floor portion made up of double slabs, and FIG. 1B is a partial cross-sectional view showing a schematic view of the floor portion of the wash area. 1A is a plan view showing a situation in which a large number of conventional load-receiving materials are arranged, and FIG. 1B is a plan view showing a panel-shaped vibration-proof material into which the load-receiving materials are embedded.

An example of the waterproof soundproofing structure of the present invention will be described with reference to the drawings. The waterproof soundproofing structure of the present invention can be used in facilities that store water, such as large public baths with a view, bathrooms in apartment buildings, or pools, as well as in various rooms that handle water, such as kitchens and rooms for cleaning products or machines (i.e., "water-use rooms"). It is particularly effective when used in water-use rooms that have spaces where people stay (such as guest rooms) on the floor below. For convenience, the waterproof soundproofing structure of the present invention will be described here using an example of a water-use room being a bathroom with a view in a hotel or inn.

Figure 1 is a schematic diagram of an observation bathroom (water room) using the waterproof soundproof structure 100 of the present invention, and is a cross-sectional view cut along a vertical plane. As shown in this figure, the waterproof soundproof structure 100 is composed of a horizontal slab (hereinafter, specifically referred to as the "vibration-proof slab 110") placed on the floor slab 210 of the observation bathroom, a horizontal slab (hereinafter, specifically referred to as the "waterproof slab 120") placed above the vibration-proof slab 110, and a vertical wall (hereinafter, specifically referred to as the "vibration-proof side wall 130") rising from the upper surface of the vibration-proof slab. However, the waterproof slab 120 is placed at a distance from the vibration-proof slab 110 so that a space SP is formed between the vibration-proof slab 110 and the waterproof slab 120. The vibration-proof slab 110, the waterproof slab 120, and the vibration-proof side wall 130 can each be constructed of cement-based materials such as concrete, or can also be constructed of steel or resin-based materials.

The vibration-proof slab 110 is composed of a planar vibration-proof material (hereinafter, specifically referred to as "floor vibration-proof material 111") and a load-receiving material (hereinafter, specifically referred to as "vertical load-receiving material 112"). The waterproof slab 120 is composed of a planar waterproof material (hereinafter, specifically referred to as "upper waterproof material 121"), and the vibration-proof side wall 130 is composed of a planar vibration-proof material (hereinafter, specifically referred to as "wall vibration-proof material 131") and a load-receiving material (hereinafter, specifically referred to as "horizontal load-receiving material 132"). The wall vibration-proof material 131 of the vibration-proof side wall 130 is preferably laid in the part of the vibration-proof side wall 130 that faces the vertical wall 220 of the observation bathroom.

2 is a cross-sectional view showing only the vibration-isolating slab 110, the waterproof slab 120, and the vibration-isolating side wall 130, where (a) shows an example in which the vibration-isolating side walls 130 are arranged at both ends, and (b) shows an example in which the vibration-isolating side walls 130 are arranged at both ends and in the middle. In the example of FIG. 2(a), two levels of vibration-isolating slabs 110 and waterproof slabs 120 are arranged, one above the other, so as to be sandwiched between the vibration-isolating side walls 130 at both ends, and the waterproof slab 120 is connected to the vibration-isolating side wall 130 at its end, and the vibration-isolating side wall 130 is connected to the vibration-isolating slab 110 at its lower end. In other words, the waterproof slab 120 is supported by the vibration-isolating side wall 130 at its end, and the vibration-isolating side wall 130 is supported by the vibration-isolating slab 110 at its lower end. On the other hand, in FIG. 2(b), as in FIG. 13, an intermediate vibration-isolating side wall 130 is arranged between the vibration-isolating side walls 130 at both ends, a waterproof slab 120 is arranged between the right-side vibration-isolating side wall 130 and the intermediate vibration-isolating side wall 130, and a waterproof slab 120 is also arranged between the left-side vibration-isolating side wall 130 and the intermediate vibration-isolating side wall 130. In the example of FIG. 2(b), the waterproof slab 120 is also supported at its end by the vibration-isolating side wall 130, and the vibration-isolating side wall 130 is supported at its lower end by the vibration-isolating slab 110. Note that the combination of the vibration-isolating slab 110, waterproof slab 120, and vibration-isolating side wall 130 is not limited to the example of FIG. 2, and various combinations can be made, such as arranging two or more vibration-isolating side walls 130 in the middle.

Below, we will explain in more detail each of the main elements that make up the waterproof soundproof structure 100 of the present invention.

(Vibration-proof slab)
Figure 3 is a cross-sectional view showing a schematic view of a vibration-proof slab 110, where (a) shows an example in which a floor vibration-proof material 111 is laid on the upper surface of a floor slab 210, and (b) shows an example in which a waterproof layer is placed between the floor slab 210 and the floor vibration-proof material 111.

As shown in FIG. 3(a), the vibration-proof slab 110 is composed of a planar floor vibration-proof material 111 laid on the upper surface of the floor slab 210 of the observation bathroom, and a holding concrete laid on the upper side of the floor vibration-proof material 111 (hereinafter, specifically referred to as "vibration-proof holding concrete 113"). Alternatively, as shown in FIG. 3(b), in addition to the floor vibration-proof material 111 and vibration-proof holding concrete 113, it can also be composed of a waterproof layer. This waterproof layer can be composed of a planar waterproof material laid on the upper surface of the floor slab 210 of the observation bathroom (hereinafter, specifically referred to as "lower waterproof material 114"), and a holding concrete laid on the upper side of the lower waterproof material 114 (hereinafter, specifically referred to as "lower waterproof holding concrete 115"). If the vibration-proof slab 110 includes a waterproof layer, the waterproof layer (lower waterproof material 114 and lower waterproofing holding concrete 115) is placed between the floor slab 210 of the observation bathroom and the floor vibration-proof material 111, which further improves the waterproof function for the floor below, making it preferable. The lower waterproof material 114 can be made of asphalt waterproof material, but is not limited to this and can be made of various materials that are conventionally used.

The floor vibration-proof material 111 of the vibration-proof slab 110 can be made of various conventional vibration-proof materials, such as flat plates made of closed-cell foamed plastic (beads-method cross-linked polyethylene foam) made from polyolefin resin, or planar materials made from other synthetic resins (rubber, etc.). This floor vibration-proof material 111 is, of course, a member that has the ability to suppress vibration, and in particular, a member that has the ability to "cut the edge" by not transmitting horizontal forces between upper and lower members (or only transmitting a very small amount of force). For example, in the case of FIG. 3(a), the floor vibration-proof material 111 cuts the edge between the floor slab 210 and the vibration-proof holding concrete 113, and in the case of FIG. 3(b), the floor vibration-proof material 111 cuts the edge between the lower waterproof holding concrete 115 and the vibration-proof holding concrete 113.

The vibration-proof slab 110 can also be configured to include a vertical load receiving material 112 as shown in FIG. 4. Since a particularly large vertical load acts where the vibration-proof side wall 130 is placed, it is advisable to place the vertical load receiving material 112 at that location. In order to efficiently receive the vertical load of the vibration-proof side wall 130, it is advisable to lay the vertical load receiving material 112 below the vibration-proof side wall 130, more specifically, on the surface (downward projection surface) on which the lower end surface of the vibration-proof side wall 130 is projected. The vertical load receiving material 112 is a member that receives the vertical load of the vibration-proof side wall 130 and has the ability to suppress vibration, and can be formed from various conventional materials such as a long rubber plate or a rubber material processed into a block shape. The vertical load receiving material 112 can also be shaped to have grooves or unevenness on both sides as shown in FIG. 5. In this case, a resin panel 116 can be laid on the upper surface of the vertical load receiving material 112.

When the vibration-proof slab 110 includes a vertical load receiving material 112, the floor vibration-proof material 111 is laid in the area where the vertical load receiving material 112 is not arranged, that is, the area excluding the downward projection surface of the vibration-proof side wall 130. Note that the vertical load receiving material 112 can be made thicker as shown in FIG. 4, for example, by making the thickness of the floor vibration-proof material 111 10 mm and the thickness of the vertical load receiving material 112 25 mm, and it is of course also possible to use floor vibration-proof material 111 and vertical load receiving material 112 of equal thickness.

As explained above, the vertical load receiving material 112 can be a long flat plate or a block-shaped one, but considering the installation work, a strip-shaped one such as a long flat plate is preferable. If a block-shaped vertical load receiving material 112 is used, as described above with reference to FIG. 14, it is necessary to cut out the panel-shaped vibration-proof material PV, fit the vertical load receiving material 112 into the cutout, and then apply masking tape around the vertical load receiving material 112, which requires considerable work and time. In contrast, if a strip-shaped vertical load receiving material 112 is used as shown in FIG. 6, it is preferable because it does not require cutting or fitting work. FIG. 6 is a plan view of the observation bathroom from above, and the upper half of the figure shows the placement surface of the vertical load receiving material 112 (i.e., the lower side of the vibration-proof side wall 130), and the lower half of the figure shows the top surface of the vibration-proof side wall 130. As shown in this figure, the strip-shaped vertical load-bearing material 112 can be laid as a continuous piece below the vibration-isolating side wall 130, making the work easy.

(Waterproof slab)
7 is a cross-sectional view showing a waterproof slab 120. As shown in this figure, the waterproof slab 120 is composed of a horizontal slab (hereinafter, specifically referred to as "foundation slab 122"), an upper-stage waterproofing material 121 laid on the upper surface of the foundation slab 122, and a holding concrete (hereinafter, specifically referred to as "upper-stage waterproof holding concrete 123") laid on the upper surface of the upper-stage waterproofing holding concrete 123. In addition, a mortar layer 124 and a tile layer 125 can also be provided on the upper surface of the upper-stage waterproofing holding concrete 123.

The upper waterproofing material 121 is a waterproofing material that prevents water from the bathtub, washing area, machine room, etc. in the observation bathroom from flowing downward (especially to the floor below), and can be made of, for example, asphalt waterproofing material. Of course, the upper waterproofing material 121 is not limited to asphalt waterproofing and can be made of various conventionally used waterproofing materials. It has been explained that the floor vibration isolation material 111 has the ability to cut the edges between the upper and lower components, but the upper waterproofing material 121 does not cut the edges between the upper and lower components, and the upper waterproofing material 121 is laid in a state where the upper and lower components (i.e., the foundation slab 122 and the upper waterproofing holding concrete 123) are integrated.

(Vibration-proof side wall)
8 is a schematic diagram of the vibration-isolating side wall 130, and is a partial cross-sectional view showing the portion where the end of the waterproof slab 120 is joined. As shown in this figure, the vibration-isolating side wall 130 is configured to include a wall body (hereinafter, particularly referred to as a "foundation wall body 133"), and can also be configured to further include a wall vibration-isolating material 131, a horizontal load receiving material 132, and a waterproof layer.

The wall vibration-proofing material 131 of the vibration-proof side wall 130 is planar, like the floor vibration-proofing material 111 of the vibration-proofing slab 110, and can be a flat plate made of closed-cell foam plastic made from polyolefin resin. Alternatively, the wall vibration-proofing material 131 can be made from various conventional vibration-proofing materials, such as planar materials made from other synthetic resins (rubber, etc.). In FIG. 8, a waterproof layer is provided between the wall vibration-proofing material 131 and the vertical wall 220, but the wall vibration-proofing material 131 can also be laid so as to contact the front of the vertical wall 220 of the observation bathroom. In addition, since the wall vibration-proofing material 131 reduces the load transmission to the vertical wall 220 behind the vibration-proofing side wall 130, it is preferable to lay it on the part of the vibration-proofing side wall 130 facing the vertical wall 220.

8, where the ends of the waterproof slab 120 are joined, a horizontal load from the waterproof slab 120 acts during an earthquake, and this horizontal load acts on the vertical wall 220 of the observation bathroom, so it is recommended to place a horizontal load receiving material 132 at that location. In order to efficiently receive the horizontal load from the waterproof slab 120 during an earthquake, the horizontal load receiving material 132 should be laid on the side of the waterproof slab 120, more specifically on the surface (side projection surface) where the end face of the horizontal load receiving material 132 (the end face on the left side in the figure) is projected. However, considering that the horizontal load receiving material 132 reduces the effect on the vertical wall 220, it is recommended to provide the vertical wall 220 in the part of the vibration-proof side wall 130 that faces the vertical wall 220. That is, when the vibration-isolating side walls 130 on both sides shown in FIG. 2 face the vertical wall 220, horizontal load receiving material 132 is laid, but it is not necessarily necessary to lay the horizontal load receiving material 132 on the middle vibration-isolating side wall 130 shown in FIG. 2(b).

The horizontal load receiving material 132 is a member that receives the horizontal load from the waterproof slab 120 during an earthquake and has the ability to suppress vibration, and can be made from various conventional materials such as long rubber flat plates or rubber material processed into a block shape. However, considering the installation work, it is better to use a strip-shaped material such as a long flat plate for the horizontal load receiving material 132, just like the vertical load receiving material 112. The horizontal load receiving material 132 can also be shaped with grooves or unevenness on both sides as shown in Figure 5. In this case, a resin panel 116 can be installed in front of the horizontal load receiving material 132.

When the vibration-isolating side wall 130 includes a horizontal load receiving material 132, the wall vibration-isolating material 131 is laid in the area where the horizontal load receiving material 132 is not arranged, that is, in the area excluding the side projection surface of the waterproof slab 120. Note that the horizontal load receiving material 132 can be made thicker as shown in FIG. 8, for example, by making the wall vibration-isolating material 131 10 mm thick and the horizontal load receiving material 132 25 mm thick, or of course it is also possible to use wall vibration-isolating material 131 and horizontal load receiving material 132 of equal thickness.

The vibration-isolating side wall 130 can also include an upper waterproof material 121 as shown in FIG. 8. In this case, the upper waterproof material 121 of the waterproof slab 120 is arranged on the vibration-isolating side wall 130 so that it is continuous, that is, a series of upper waterproof materials 121 is arranged on the waterproof slab 120 and the vibration-isolating side wall 130. This makes it possible to prevent water from the bathtub, washing area, machine room, etc. in the observation bathroom from flowing to the side (especially to the adjacent guest rooms).

As explained above, the horizontal load receiving material 132 should be provided on the portion of the vibration-isolating side wall 130 that faces the vertical wall 220. However, as shown in FIG. 9, the horizontal load receiving material 132 should also be provided at the portion where the end face of the vibration-isolating slab 110 (the end face on the right side in the figure) abuts the vertical wall 220 of the observation bathroom. During an earthquake, the horizontal load from the vibration-isolating slab 110 acts on the vertical wall 220, so the horizontal load receiving material 132 receives the horizontal load during the earthquake. In order to efficiently receive the horizontal load from the vibration-isolating slab 110 during an earthquake, the horizontal load receiving material 132 should be laid on the side of the vibration-isolating slab 110, more specifically, on the end face of the vibration-isolating slab 110 that faces the vertical wall 220.

(Test results)
The inventors have conducted tests to confirm the effectiveness of the waterproof sound insulating structure 100 of the present invention. Figures 10 to 12 are frequency characteristic diagrams showing the test results.

Figure 10 shows the results of measuring the sound source in the bathtub of an observation bath in an actual building before it was filled with water. This measurement test was conducted in accordance with JIS A1418-1, and a tapping machine was used as the sound source. As shown in Figure 10, the light floor impact sound level between the guest rooms, which do not have vibration-proofing measures, is Lr-50, but in the large bath area, which uses the waterproof soundproofing structure 100 of the present invention, a maximum of Lr-35 is secured. Lr-45 is also secured in the wash area, and it was confirmed that there are no problems with soundproofing performance. Furthermore, when a test stay was made at the facility, hearing checks and noise measurements were carried out in the guest rooms directly below the observation bath while it was in operation, the hearing check confirmed that it was so quiet that no sign of it being used was detected, and the level in the center of the room was about 27 dBA when the air conditioning equipment was in operation.

Figures 11 and 12 show the results of measurements made in accordance with JIS A1418-1, as in Figure 10. However, in Figure 11, the sound of a bathtub dropped onto a PC panel was measured on the floor below, and in Figure 12, the sound of a shower head dropped onto a PC panel was measured on the floor below. In each of Figures 11 and 12, the frequency characteristics diagram on the left shows the result of dropping a bathtub, etc. onto two PC panels (75 mm + 150 mm), while the frequency characteristics diagram on the right shows the result of dropping a bathtub, etc. onto one PC panel (75 mm). As shown in Figures 11 and 12, the bare concrete surface without vibration prevention measures shows a light floor impact sound level of about Lr-65, but the case in which the waterproof soundproofing structure 100 of the present invention is used shows a light floor impact sound level (about Lr-45) lower than that of the bare concrete surface. In this way, it was found that the waterproof soundproofing structure 100 of the present invention is effective in suppressing noise from upper floors.

The waterproof soundproofing structure of the present invention can be used in a variety of facilities that handle water, such as large open-air baths in hotels, bathrooms in apartment buildings, and swimming pools, as well as in kitchens and washing facilities for products and machines.

100 Waterproof sound insulation structure of the present invention 110 Anti-vibration slab (of waterproof sound insulation structure) 111 Floor vibration-proof material (of vibration-proof slab) 112 Vertical load-bearing material (of vibration-proof slab) 113 Anti-vibration holding concrete (of vibration-proof slab) 114 Lower waterproof material (of vibration-proof slab) 115 Lower waterproof holding concrete (of vibration-proof slab) 116 Resin panel (of vibration-proof slab) 120 Waterproof slab (of waterproof sound insulation structure) 121 Upper waterproof material (of waterproof slab) 122 Foundation slab (of waterproof slab) 123 Upper waterproof holding concrete (of waterproof slab) 124 Mortar layer (of waterproof slab) 125 Tile layer (of waterproof slab) 130 Anti-vibration side wall (of waterproof sound insulation structure) 131 Wall vibration-proof material (of vibration-proof side wall) 132 Horizontal load-bearing material (of vibration-proof side wall) 133 Foundation wall (of vibration-proof side wall) 210 Floor slab (of observation bathroom) 220 Vertical wall (of observation bathroom) LP Sound insulation layer LV Waterproof layer PD Drain pipe PS Hot water pipe PV Panel-shaped vibration-proof material RS Load-bearing material SL Lower slab SP Space SU Upper slab

Claims (7)

A structure installed in a water utilization room where water is utilized, the structure suppressing sound transmitted to the floor below the water utilization room,
A vibration isolation slab disposed on the floor slab of the water utilization room;
A waterproof slab is disposed above the vibration-proof slab and spaced apart to form a space;
and a vibration-isolating side wall rising from the upper surface of the vibration-isolating slab and supporting the vibration-isolating slab;
The vibration-proof slab is configured to include a planar floor vibration-proof material and a retaining concrete laid on the upper side of the floor vibration-proof material,
The waterproof slab is composed of a foundation slab, an upper waterproofing material laid on the upper surface of the foundation slab, and a holding concrete laid on the upper side of the upper waterproofing material.
A waterproof soundproofing structure. The vibration-isolating slab includes a vertical load-bearing member laid on a downward projection surface of the vibration-isolating side wall,
The vertical load receiving member is formed of an elastic material having vibration-proofing properties,
The floor vibration-proof material is laid in a portion where the vertical load-receiving material is not arranged.
2. The waterproof soundproof structure according to claim 1. The vertical load receiving member is a strip-shaped member.
3. The waterproof soundproof structure according to claim 2. The vibration-isolating side wall is a wall surface facing the vertical wall of the water supply room, and includes a horizontal load-bearing material laid on a side projection surface of the waterproof slab,
The horizontal load receiving member is formed of an elastic material having vibration-proofing properties.
3. The waterproof soundproof structure according to claim 1 or 2. The vibration isolation slab includes the horizontal load receiver,
The horizontal load-receiving material is laid on the end surface of the vibration-proof slab facing the vertical wall of the water supply room.
5. The waterproof soundproof structure according to claim 4. the vibration-isolating side wall includes a planar wall vibration-isolating material;
The wall vibration-proofing material is laid in a portion where the horizontal load-receiving material is not arranged.
5. The waterproof soundproof structure according to claim 4. The vibration isolation slab includes a waterproof layer;
The waterproof layer is composed of a lower waterproof material and a holding concrete laid on the upper side of the lower waterproof material.
3. The waterproof soundproof structure according to claim 1 or 2.

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