JP3385009B2 - Wooden soundproof and sound-absorbing wall with collective pillar structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wooden soundproof wall (sound insulation wall) / sound absorption wall (including a sound deadening wall) having a pillar structure in which hexagonal compressed wood is used as a wooden wall material.

[0002]

2. Description of the Related Art As is well known, soundproofing and sound absorption on roads, railroads, indoors and outdoors is from the standpoint of maintaining a natural environment, maintaining and improving the living environment, maintaining health, maintaining a comfortable living environment, and preventing annoyance to others. Is a mandatory condition. Therefore, various forms, materials, structures and the like are adopted for this kind of soundproofing / sound absorbing. On the other hand, various improvements have been proposed for this kind of soundproofing / sound absorbing. In particular, in terms of maintaining the natural environment, maintaining and improving the living environment, maintaining health, securing the living environment, etc.
Prompt response is required for soundproof / absorption walls for roads and railways, or for indoor / outdoor sound / absorption walls.

As a technique related to this, recently, soundproofing /
From the standpoint that the sound absorbing effect is achieved relatively easily, it is environmentally friendly, and no pollution occurs, it is made of wood (made of wood).
Sound insulation and sound absorption walls of have been studied or announced. For example, a structure having a groove and / or an air layer behind it in a wooden wall material, and a structure in which a large number of wall materials composed of this groove and / or air layer are overlapped, Is intended to be used for sound insulation and sound absorption, or to utilize the characteristics of the wood material of the wall material for this sound insulation and sound absorption.

Further, as a document related to this, Japanese Patent Laid-Open No. Hei 11
-There is a sound deadening wall for No. 13026. The contents are divided into a plurality of chambers with a partition plate in the sound deadening wall body of various materials, and a vibration and soundproof paint is applied to the inner surface of the chambers, and asbestos with holes, glass fiber, and A sound absorbing plate such as rock wool is attached, a partition plate is attached to the upper part of the sound absorbing plate to form a plurality of chambers, and vibration damping and soundproof paint is applied to the entire inner surface of the chambers.
The sound absorbing plate has a structure in which a plurality of rib-shaped sound absorbing plates are erected to form a sound absorbing plate made of various materials. The sound absorbing effect is increased, the sound absorbing effect is increased by the three-dimensional sound absorbing surface, and the eddy current is generated. Synergistic effects such as scattering of sound waves and prevention of diffracted sound can be expected. Therefore, a structure that can be used as a sound deadening wall for expressways, Shinkansen tracks, or general roads is intended.

[0005]

In the configuration example of FIG. 12 showing an example of a conventional sound insulation wall made of wood, the sound absorption coefficient shown in FIG. 13 is used.
(A1409) 70% or more for the sound absorption reference value of 400 Hz, 80% or more for 1000 Hz, and the numerical value (X) of the sound insulation wall with unified specifications of the public corporation, the numerical value of the configuration example (Y ), There are considerable differences in performance standards, and there is a problem that cannot be said to be sufficient. In the example shown in the figure, according to the reverberation room method, the numerical value is
It is about 0.6. Therefore, it is considered that the sound insulation is quite effective, but the sound absorption is inferior.

[0006] Further, in the literature, a plurality of chambers are divided into a plurality of chambers by partition walls, a vibration-proof and sound-proof coating is applied, and a sound absorbing plate having holes and a partition plate are attached. It is a composite structure in which a vibration-proof and sound-proof coating is applied and a sound-absorbing plate is further provided. Therefore, when the material is wood or the like, there are problems such as complication of the structure, complication of manufacturing, etc., and increase in cost, and a structure such as a columnar wall material not superposed, but a honeycomb structure or the like. Since it adopts, an auxiliary structure is required,
Problems such as leaving the same problems as described above, and leaving a problem in maintaining the natural environment and the living environment when the material is a metal material, asbestos, etc. are considered.

[0007]

[Means for Solving the Problems]

[0008]

The invention of claim 1 utilizes the characteristics of wood, the structure of holes / cavities and the arrangement of holes / cavities, etc. to exert soundproofing and sound absorbing effects, for example, to maintain the natural environment and the living environment. Achieves excellent results in terms of maintenance and improvement, health maintenance, securing the living environment, etc., and can be used in roads, railways, indoors and outdoors, or in other fields. -Intended to provide a sound absorbing wall.

The first aspect of the present invention is to arrange several holes, which are deeply bored in the radial direction of the wooden columnar wall material, in an aligned state,
In addition , a large number of cavity / hole-bearing wall members configured by several cavities deeply opened in the radial direction of the wall material intersecting the hole are overlapped, and at least the cavity / hole-bearing wall A soundproof / sound-absorbing wall having a hole of a material arranged on a predetermined sound source side of a road, a railroad, or a room, the hole being deeply drilled in the wall material, and a predetermined sound source side of a road, a railroad, or a room. Sound insulation and sound absorption of a collective pillar structure characterized by sound insulation and sound absorption using the opening of the perforated hole, the hollow portion deeply opened in the wall material, and the wood material of the wall material.
It is a sound absorbing wall.

The invention of claim 2 intends to achieve the same result as that of claim 1 by devising a method of assembling the wall material with holes to exert soundproofing and sound absorbing effects.

A second aspect of the present invention is a wooden soundproof / sound-absorbing wall having a collective column structure, in which a slight gap (a synergistic effect of holes, hollow portions and slits) is provided between overlapping wall materials with holes.

The invention of claim 3 is a wooden soundproof / sound absorbing wall which is excellent in strength such as durability and earthquake resistance while effectively utilizing unused thinning materials, and wooden soundproofing capable of exhibiting soundproofing and sound absorbing effect. -A sound absorbing wall, or perforations or openings are made more dense,
We intend to provide wooden soundproof and sound absorbing walls that can exhibit excellent soundproofing and sound absorbing effects.

A third aspect of the present invention is a wooden soundproof / sound absorbing wall having a columnar structure in which the wooden columnar wall material is a compressed wood obtained by compressing thinned wood.

The invention of claim 4 is a wooden soundproof / sound absorbing wall which is excellent in strength such as durability and earthquake resistance while effectively utilizing unused thinned wood and the like, and a surface uneven shape formed by superposition.
The intention is to provide wooden soundproof and sound absorbing walls that can exhibit soundproofing and sound absorbing effects due to (substantially corrugated shape).

According to claim 4, the wooden pillar-shaped wall material is made of hexagonally compressed wood obtained by compressing thinned wood.
It is a sound absorbing wall.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION A preferred example of a wooden columnar wall material used in the present invention will be described. That is, a method for forming hexagonal compressed wood obtained by compressing unused wood such as unused thinned wood or waste wood (or aggregate wood and chips) will be described. Heat set the thinned wood. This heat-set thinned wood with heating and softening (heated thinning wood)
To the upper and lower molds (mold). At this time, with the upper mold raised, the heat-softened wood is loaded (set) into the hexagonal compressed wood space that is formed between the lower mold and the hexagon, and then the upper mold is lowered. This will be explained sequentially. The upper mold one convex mold part and the upper mold other convex mold part are sequentially joined (inserted) into the lower mold one concave mold part and the lower mold other concave mold part, and the upper mold one concave mold part and the upper mold other concave mold part are , One lower convex part and the other lower convex part
(Fit). That is, the piles are in a state where they are successively deeply fitted to each other, and substantially the whole of the heated thinning material has one side of the upper die and the other side of the concave and convex portions, and the pressing surface of the mountain-shaped hexagonal compressed wood space, and one side of the lower side of the lower die. It is pressed by the uneven part and the pressing surface of the mountain-shaped hexagonal compressed wood space, and it is compressed into a substantially hexagonal column state, but at this time, a large amount of water is extruded from the heated thinning material. In addition, it was found that the inward movement of the annual ring becomes large, and it is performed reliably and systematically. This gathering progresses sequentially, and the heated thinned wood existing in the hexagonal compressed wood space is sequentially compressed. The upper mold one convex mold part and the upper mold other convex mold part are almost completely combined (inserted) with the lower mold one concave mold part and the lower mold other concave mold part, and the upper mold one concave mold part and the upper mold other mold part. The concave part is almost completely combined with the lower mold convex part and the lower convex part, so that the pressing surface of the hexagonal compressed wood space of the upper mold and the pressing surface of the hexagonal compressed wood space of the lower mold. The compaction of the heated thinned wood is completed and the hexagonal compressed wood is molded. This molded hex compressed wood is a heated wood
The strength is about 1.6 times and the unit volume weight is about twice that of the original log, so durability, earthquake resistance, perforation / drilling
It is a wooden columnar wall material that is excellent in strength such as diversification of processing such as connection.

The wall material has a structure capable of exhibiting soundproofing and sound absorbing effects. That is, a large number of holes are aligned and perforated and / or cavities are opened in this wall material (FIGS. 1 and 2 are holes, and FIGS.
(Figure 6 shows holes and cavities). The sound-proof / sound-absorbing wall is constructed by appropriately superimposing or framing the wall material in which the holes are perforated and / or the cavity is opened (see FIGS. 7 and 8). The sound-absorption and sound-absorption wall sound absorption test data are shown in Fig. 9, Fig. 10, etc., and are 400H, which is the standard value of the reverberation room method sound absorption coefficient of the Japan Highway Public Corporation mentioned above.
We were able to secure numerical values that satisfied 70% or more for z and 80% or more for 1000 Hz. In addition, this experiment is data in the architectural acoustics laboratory of the Kobayashi Institute of Science.

The contents of one experiment will be described as a table. table 1
Indicates the date, conditions, etc. of the experiment. Table 2 shows the reverberation time shown in FIG. 10, in which T1 has the wooden sound barrier of the present invention installed in a room (164 m ³ ) within a range of 3 m ² , and FIG. 7 and FIG. It is in the state of 8. The outline of the combination is shown in Fig. 5.
The cavity portion / wall material with holes × 6 pieces in the configuration example, the wall material with holes in the configuration example of FIG. 1 × 6 pieces, and the cavity material / wall material with holes similar to the configuration example in FIG. 5 × 3 pieces. Also, T2 indicates the empty state of the room. still,
α indicates a sound absorption coefficient, and a graph of the sound absorption coefficient is indicated by Z in FIG. 9 (in this example, the maximum value is 1.0 or more). Considering the above experimental examples, sound insulation due to resonance, sound absorption, etc. can be achieved due to differences or changes in the depth and / or position / arrangement (form) of the holes, and the number of holes and / or cavities provided, It has features such as comprehensive and synergistic soundproofing such as position and depth, sound absorption, or resonance. By utilizing this resonance, noise, sound,
Attenuating effect of other sounds can be achieved.

[Table 1] Table 2

[0021]

EXAMPLE An example of the present invention will be described below.

Reference numeral 1 denotes a wall material having a wooden pillar shape (the shape of the pillar is a square pillar, a round pillar, or another shape). In this example, the thinned wood is compressed hexagonal compressed wood 1. Radial direction of this hexagonal compressed wood 1
Several holes 2, 2, 2, ... (denoted as 2) that are deeply drilled (opened) toward (A arrow direction) are arranged in an aligned state to form a wall member 3 with holes. (Example configuration of FIG. 1). This wall material with holes 3
The soundproof and sound absorbing wall 4 is formed by superimposing a large number of these. Then, in principle, the holes 2 are provided excluding the overlapping side so as to achieve efficiency in work, cost, etc., and achievement of purpose, strength, etc. Further, the hole 2 is opened on the sound source side (inside the hexagonal compressed wood 1 in the figure) when the soundproof / sound absorbing wall 4 is installed in a room, a wall surface or the like. When the hexagonal compressed wood 1 is used, the holes 2 can be formed at a high density, so that excellent effects such as soundproofing and sound absorption can be expected. In addition, the hole 2 is provided in a configuration that ends in the middle of the hexagonal compressed wood 1, a configuration in which at least a part thereof is tapered and penetrates (not shown), or the same site relationship (for example, adjacent holes in the longitudinal direction). Different configurations such as depth and / or diameter (not shown), different configurations of holes 2 (tapering inward and / or outward, or screw shape, difference in screw direction, etc.) (not shown), etc. And In addition, if the hole 2 faces downward, it has the advantages of preventing water accumulation and draining water.

In addition, the hexagonal compressed wood 1 is added to the wall material 3 with holes.
Open the cavity deeply in the radial direction of
Portion that communicates with (sound source side) and / or does not communicate (wall material with holes 3
One or several cavities 5 and 5 (the number of which is free) are opened on the overlapping side) (configuration example of FIGS. 3 to 6). It is also possible to provide a soundproof / sound absorbing wall 4 by superimposing a large number of the wall members 30 with hollow portions / holes. With the use of the compressed hexagonal wood 1, since the cavities 5 can be formed with a high density or a large shape (width, depth, etc. of cavities), excellent effects such as soundproofing can be expected. The cavity
The reference numeral 5 is a cavity (air layer) that is installed in the longitudinal direction of the hexagonal compressed wood 1 and has both ends and a bottom (overlapping surfaces) closed. Reference numeral 50 in the figure denotes a connecting hole.

As shown in FIGS. 7 and 8, the combination of the wall member 3 with holes and the cavity member / wall member 30 with holes, the number of combinations, etc. are free, and the sound absorbing effect, indoor and outdoor conditions, Make appropriate changes according to other conditions to achieve optimum sound absorption (sound insulation). Further, the connection of the hexagonal compressed wood 1 is performed by a wedge provided in the connection hole 50, fitting,
Use a wooden connecting member 6 such as a plug-in, or a bonding method, or another means. Of course, the connecting material 6 is ideally a wooden compression connecting material.

The hexagonal compressed wood 1 is a soundproof / sound-absorbing wall 4 that is excellent in the effective use of unused thinning materials, durability, and strength such as earthquake resistance, and a sound-insulating / sound-absorbing wall that can exhibit soundproofing and sound absorbing effects.
4 or the purpose of the present invention is to provide a soundproof / sound absorbing wall 4 which is excellent in the effect of forming the holes 2 and / or the cavities 5 at a high density. However, it is possible to use wood materials such as general timber and aggregated wood. Wooden soundproof and sound absorbing walls can be used for natural environment, health management, environmental maintenance, reuse, easy disposal, etc.
For example, it is useful for wall materials such as concrete wall materials, aluminum and glass wool.

Further, a hole 2 and / or a hole formed in the hexagonal compressed wood 1
Alternatively, the shape, site, number, form, etc. of the cavity 5 to be opened are arbitrary, and are appropriately changed depending on the sound absorbing effect, indoor / outdoor conditions, other conditions, etc. to achieve optimum sound absorption (sound insulation). Further, the uneven shape (corrugated shape effect) or the uneven surface (corrugated surface effect) due to the superposition of the hexagonal compressed wood 1 can contribute to the amplification effect such as soundproofing, sound absorption, and resonance.

[0027]

【The invention's effect】

According to the first aspect of the present invention, several holes that are deeply drilled in the radial direction of the wooden columnar wall material are arranged in an aligned state, and the holes are deepened in the radial direction of the wall material intersecting the holes. A number of cavities and wall materials with holes made up of several cavities that have been opened are overlapped, and the holes and openings of the cavities and wall materials with holes are opened on the specified sound source side. It is a soundproof / sound-absorbing wall, and it is a collective pillar structure that uses soundproofing and sound absorption by using the form in which this hole is deeply opened in the wall material, the opening of the hole opened on the sound source side, and the hollow part and the wood material of the wall material. It is a wooden soundproof and sound absorbing wall. Therefore, the characteristics of wood,
Utilizing the hole / cavity structure and hole / cavity arrangement structure,
Being able to exert soundproofing and sound absorbing effects, and by this effect, for example, achieving excellent results in terms of maintaining the natural environment, maintaining and improving the living environment, maintaining health, maintaining the living environment, and roads, railways, indoors and outdoors, Alternatively, it is possible to provide a wooden soundproofing / sound absorbing wall that can be adopted in other fields, or an environment-friendly wooden soundproofing / sound absorbing wall.

The invention of claim 2 is a wooden soundproof / sound-absorbing wall having a collective column structure in which a slight gap is provided between the overlapping wall materials with holes. Therefore, the method of assembling the wall material with holes is devised to exert the soundproofing and sound absorbing effects, and the same result as claim 1 can be achieved.

In the invention of claim 3, the wooden columnar wall material is
It is a wooden soundproof / sound absorbing wall with a collective pillar structure that uses compressed wood made by compressing thinned wood. Therefore, while making effective use of unused thinned wood, etc., it is a wooden soundproof / sound absorbing wall that is excellent in terms of strength such as durability and earthquake resistance, and wooden soundproofing that can exhibit soundproofing and sound absorbing effects.
It has a feature that it can provide a sound-absorbing wall, or a wooden sound-absorbing / sound-absorbing wall, etc., which can achieve high sound-insulating and sound-absorbing effects by increasing the density of perforations or openings.

In the invention of claim 4, the wooden columnar wall material is
It is a wooden soundproof and sound absorbing wall with a columnar structure made of compressed hexagonal compressed wood. Therefore, while making effective use of unused thinned wood, etc., it is a wooden soundproofing / sound absorbing wall that is excellent in terms of strength such as durability and earthquake resistance, and a wooden soundproofing / sound absorbing wall that can exhibit soundproofing and sound absorbing effects, or perforation or opening. It has a feature that it can provide high sound density and provide wooden soundproof and sound absorbing walls that can exhibit excellent soundproofing and sound absorbing effects. In addition, there is a feature that a wooden soundproof / sound absorbing wall can be provided that can exhibit soundproofing and sound absorbing effects due to the uneven surface shape formed by superposition.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a wall material with holes.

FIG. 2 is a side view showing an example of a wall material with holes.

FIG. 3 is a cross-sectional view showing an example of a wall member with a hollow portion / hole.

FIG. 4 is a side view showing an example of a wall member with a hollow portion / hole.

FIG. 5 is a cross-sectional view showing another example of a wall member with a cavity / hole.

FIG. 6 is a side view showing another example of a cavity / wall member with holes.

FIG. 7 is a perspective view showing a soundproof / sound absorbing wall showing a combined structure of a wall material with holes and a cavity portion / wall material with holes.

8 is a perspective view showing an example of a soundproof / sound absorbing wall showing a combined structure of a wall material with holes and a cavity / wall material with holes (enlarged view of FIG. 7). FIG.

FIG. 9 is a diagram showing a sound absorption coefficient of a reverberation room method in an experimental example.

FIG. 10 is a diagram showing an experimental example of reverberation time of one experimental example.

FIG. 11 is a diagram showing the sound absorption coefficient of the experimental example of the reverberation time of one experimental example, and the sound absorption coefficient of the conventional experimental example of the reverberation time of each wooden or the like in comparison.

FIG. 12 is a partially omitted perspective view showing an example of a conventional wooden soundproof / sound absorbing wall.

FIG. 13 is a diagram showing the sound absorption coefficient of the example of FIG. 12;

[Explanation of symbols]

1 Hexagon compressed wood 2 holes Wall material with 3 holes 30 Wall materials with cavities and holes 4 Soundproof and sound absorbing wall 5 Cavity 50 Connection hole 6 Connecting material X-Z sound absorption

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazushi Goto 502 Shinno, Anan-cho, Shimoina-gun, Nagano Goto Construction Co., Ltd. (56) Reference JP-A-9-291512 (JP, A) JP-A-2001-164522 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) E01F 8/00

Claims (4)

(57) [Claims] 1. A place several holes drilled deep toward the radial direction of the wooden pillar wall materials in alignment, also the hole
A plurality of holed wall materials constituted by several cavities that are deeply opened in the radial direction of the wall material intersecting with, superimpose a large number, and at least the holes of the cavity / holed wall material, a road, A soundproof / sound absorbing wall configured to be installed on a predetermined sound source side of a railway or a room, wherein the hole is deeply perforated in the wall material, and an opening of the hole formed on the predetermined sound source side of a road, railway, or room. , A wooden soundproof / sound absorbing wall having a collective pillar structure characterized by soundproofing and absorbing sound by utilizing the hollow portion deeply formed in this wall material and the wood material of the wall material. 2. The wooden soundproof / sound-absorbing wall having a collective column structure according to claim 1 , wherein a slight gap is provided between the overlapping wall materials with holes. 3. The wooden soundproof / sound absorbing wall having a collective pillar structure according to claim 1, wherein the wooden columnar wall material is compressed wood obtained by compressing thinned wood. 4. The wooden soundproof / sound absorbing wall having a collective column structure according to claim 1, wherein the wooden columnar wall material is a compressed hexagonal wood obtained by compressing thinned wood.