JP7248474B2 - wall structure - Google Patents

Description

The present invention relates to wall construction.

As a building with a layered structure such as a plate-like housing complex, there is known a structure having a reinforced concrete structure and partitioning each floor into a plurality of exclusive portions by a wall structure such as a partition wall. Patent Literature 1 describes a wall structure (partition wall) in which a steel frame member forming a structural member of a building is housed. According to this wall structure, by storing the steel members inside the wall structure, the rigidity of the wall structure is secured, and at the same time, a wide space is secured within the private portion to improve the functionality and aesthetics of the private portion. .

JP 2017-223075 A

By the way, improvement of the sound insulation performance of the wall structure is demanded especially in collective housing. According to this test, it was found that the vibration caused by the noise generated in one of the occupied portions was transmitted to a greater extent in the portion where the steel members were arranged in the plane of the wall structure.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a wall structure capable of improving sound insulation performance while ensuring rigidity.

According to one aspect of the present invention, the wall structure is a wall structure that divides each floor of a building with a hierarchical structure into at least two compartments, and comprises a pair of finishing materials facing each of the two compartments; a steel frame member extending in the in-plane direction of the finishing material in the space between the finishing materials and forming a structural member of the building; and a sound absorbing material disposed in contact with the steel frame member in the space between the pair of finishing materials. , prepare.

In the wall structure described above, the steel frame member may not be coated with a fireproof coating.

In the wall structure described above, the steel frame member may be an H-section steel having a pair of flanges and a web, and the sound absorbing material may be arranged between the pair of flanges.

The above wall structure further includes a lower sound absorbing material that is a sound absorbing material arranged under the wall structure, and the steel frame member is arranged above the wall structure and arranged in contact with the lower sound absorbing material and the steel frame member. It may be separated from the sound absorbing material.

In the wall structure described above, the lower sound absorbing material may be self-supporting in the space between the pair of finishing materials.

In the wall structure, the sound absorbing material may be at least one of ceramic wool, glass wool, and rock wool.

In the wall structure, the finishing material may include at least one fireproof board selected from a gypsum board, a rock wool board, a calcium silicate board, an ALC board, and a GRC board.

According to the above configuration, the rigidity of the wall structure can be ensured by arranging the steel frame member inside the wall structure. In addition, by arranging the sound absorbing material in contact with the steel frame member, the incident energy of sound transmitted through the steel frame member can be absorbed, and the sound insulation performance of the wall structure can be improved.

1 is a perspective view of a building with a hierarchical structure according to a first embodiment of the present invention; FIG. 1 is a side view of a building with a hierarchical structure according to a first embodiment of the present invention; FIG. 1 is a front view of a building with a hierarchical structure according to a first embodiment of the present invention; FIG. 1 is a cross-sectional view of a wall structure according to a first embodiment of the invention; FIG. FIG. 4 is a cross-sectional view of a wall structure according to a second embodiment of the invention; FIG. 4 is a cross-sectional view of a wall structure according to a third embodiment of the invention; FIG. 9 is a graph showing results of a test on sound insulation performance of the wall structure of the second embodiment and a comparative example in which the sound absorbing material is omitted from the wall structure of the second embodiment; FIG. FIG. 5 is a graph showing test results regarding sound insulation performance of the wall structures of the first embodiment, the second embodiment, and the third embodiment. FIG.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the present specification and drawings, constituent elements having substantially the same functional configuration are denoted by the same reference numerals, thereby omitting redundant description.

(First embodiment)
1, 2 and 3 are a perspective view, a side view and a front view of a hierarchical structure building 10 according to a first embodiment of the present invention. A building 10 has a wall structure 1 . The wall structure 1 has a finish 6 facing the occupied portion P, only a portion of which is shown in FIGS. Moreover, in FIG. 1, illustration of the steel base material 2 which comprises the wall structure 1 is abbreviate|omitted.
The building 10 of the present embodiment is a plate-like housing complex having a longitudinal direction X and a lateral direction Z, and having a rectangular shape when viewed from above. Note that the building 10 is not limited to an apartment complex, and may be used as a hospital or an office.

The building 10 includes a slab 11 that separates the floors of a hierarchical structure, a plurality of inter-beam steel frame members 12 extending in the inter-beam direction Z, a plurality of girder-beam steel frame members 13 extending in the girder direction X, and an inter-beam steel frame extending in the height direction Y. and a plurality of concrete columns 14 to which the members 12 and girder steel members 13 are joined.

In the building 10, exclusive portions P (sections), which are sections of houses or the like, are arranged in the column direction X on each floor of the hierarchical structure. A wall structure 1 functioning as a partition wall separating each floor of the building 10 into at least two exclusive portions P is arranged between the exclusive portions P adjacent to each other in the girder direction X. The wall structure 1 has a finish 6 facing the occupied portion P, only a portion of which is shown in FIGS.

Concrete columns 14 are arranged along the outer periphery of building 10 . The concrete column 14 is made of reinforced concrete having a substantially rectangular cross section or the like. The concrete column 14 may be formed of steel reinforced concrete with a steel frame column such as a single H-section steel or cross H-section steel built therein, as required. The concrete pillars 14 are arranged at the four corners of each exclusive portion P.

In this embodiment, the inter-beam steel frame members 12 and the girder steel frame members 13 are H-shaped steel.
The inter-beam steel frame member 12 extends in the inter-beam direction Z at the upper part of each floor of the hierarchical structure, and both ends thereof are connected to a pair of concrete columns 14, respectively. The inter-beam steel frame member 12 forms a structural member of the building 10 by being connected to the concrete column 14 .

FIG. 4 is a cross-sectional view of a wall structure 1 according to a first embodiment of the invention. The perspective of the front view of the building 10 shown in FIG. 3 and the cross-sectional view of FIG. 4 are the same. In the following description, the wall thickness direction X, height direction Y, and wall width direction Z shown in FIG. 4 are used. They correspond to the height direction Y and the inter-beam direction Z, respectively.
As shown in FIG. 4, the wall structure 1 comprises at least a pair of facings 6 respectively facing compartments P on either side, a steel backing 2 supporting the at least one pair of facings 6 respectively, and a steel backing 2 and a sound absorbing material 7. As described above, the inter-beam steel frame member 12 is H-shaped steel in this embodiment. In addition, between the steel base material 2 and the finishing material 6, a floor board or the like may be interposed.

The steel base material 2 can be assembled based on the standard defined by JIS A 6517, for example. The steel base material 2 includes rail-shaped runners 3 (see FIG. 2) extending in the wall width direction Z at the upper and lower ends of the wall structure 1, and is supported by the runners 3 and extends in the height direction Y, and is attached to the finishing material 6. and a stud 4 to be joined. 4, illustration of the runner 3 is omitted. The steel substrate 2 may further have a steel steady rest (not shown) that penetrates through holes provided in the studs 4 to prevent the studs 4 from wobbling.
In addition, although the runner 3 of this embodiment is directly attached to the inter-beam steel frame member 12, it is not limited to this, and may be attached to the inter-beam steel frame member 12 via a predetermined connecting member, for example.

Here, the studs 4 supporting the finishing members 6 on both sides are spaced apart in the wall thickness direction X. As shown in FIG. The center-to-center distance between the studs 4 can be appropriately set according to the required sound insulation performance and the like. The wall structure 1 of this embodiment is formed, for example, to have a total thickness of about 200 mm to about 400 mm. In this case, the center-to-center distance between the studs 4 in the wall thickness direction X amounts to approximately 140 mm to 340 mm.

A pair of finishing materials 6 respectively face two separate private areas P. As shown in FIG. The finishing material 6 is, for example, a gypsum board, a rock wool board, a calcium silicate board, an ALC board (a lightweight cellular concrete board cured with high-temperature and high-pressure steam), or a GRC board (a cement mortar and glass fiber combined with cement mortar and glass fiber). (composite board), etc.), etc. The finishing material 6 can be a laminated structure of a plurality of fireproof boards. In this case, fireproof boards of the same type may be stacked, or fireproof boards of different types may be stacked. The finish 6 is joined to the steel substrate 2, for example by means of screws.
In the above, the case where the base of the finishing material 6 is the steel base material 2 has been described, but the base of the finishing material 6 is not limited to the steel base material 2, and may be a wooden base material, which is the same as the steel stud. The finish 6 may be supported by wooden studs.

As described above, in the wall structure 1 , the inter-beam steel frame member 12 extends in the wall width direction Z, that is, in the in-plane direction of the finishing members 6 in the space between the pair of finishing members 6 . The inter-beam steel frame member 12 is arranged between the pair of finishing members 6 so that it is not visible from the exclusive portion P. In this embodiment, the inter-beam steel frame member 12 is arranged so that the flange 16 is parallel to the slab 11 and the web 17 is parallel to the finishing material 6 . In this embodiment, the inter-beam steel frame member 12 is not provided with a fireproof coating such as a sprayed rock wool fireproof coating material or a wound fireproof coating material. Since the inter-beam steel frame member 12 is not coated with fireproof coating, the material cost and construction cost of the fireproof coating material can be suppressed.

The sound absorbing material 7 is made of ceramic wool, for example. Ceramic wool is made by laminating ceramic fibers and needle-processing a felt-like heat insulating material into a blanket. The sound absorbing material 7 is not limited to ceramic wool, and glass wool and rock wool, for example, can also be used.

The wall structure 1 of this embodiment has a first sound absorbing material 7A and a second sound absorbing material 7B (lower sound absorbing material) as the sound absorbing material 7 . The first sound absorbing material 7A is arranged to extend in the wall width direction Z in contact with both surfaces of the web 17 of the inter-beam steel frame member 12 . At least a part of the first sound absorbing material 7A and the inter-beam steel frame member 12 may be in contact with each other. That is, as long as the first sound absorbing material 7A is arranged between the pair of flanges 16 and the first sound absorbing material 7A is in contact with the flanges 16, the first sound absorbing material 7A and the web 17 may be separated. The first sound absorbing material 7A may be formed so that the width corresponds to the dimension of the web 17 of the inter-beam steel member 12 . By arranging the first sound absorbing material 7A in contact with the steel frame member 12, the incident energy of sound transmitted through the steel frame member 12 can be absorbed, and the sound insulation performance of the wall structure 1 can be improved.

The second sound absorbing material 7B is arranged under the wall structure 1 so as to extend in the wall width direction Z. As shown in FIG. More specifically, the second sound absorbing material 7B is arranged such that its principal surface faces the wall thickness direction X and its longitudinal direction extends along the wall width direction Z. As shown in FIG. The second sound absorbing material 7B of this embodiment is formed by stacking two sheets of ceramic wool. By arranging the second sound absorbing material 7B in addition to the first sound absorbing material 7A, the sound insulation performance of the wall structure 1 can be further improved. In addition, in the present embodiment, the second sound absorbing material 7B is not fixed to the steel base material 2, but stands alone between the pair of steel base materials 2. As shown in FIG. By allowing the second sound absorbing material 7B to stand on its own in this way, the construction cost of the second sound absorbing material 7B can be reduced.

Here, as shown in the figure, the first sound absorbing material 7A and the second sound absorbing material 7B are spaced apart in the height direction Y in this embodiment. That is, in the present embodiment, no sound absorbing material is arranged in the height direction Y between the first sound absorbing material 7A and the second sound absorbing material 7B. As a result, an air layer S is formed between the first sound absorbing material 7A and the second sound absorbing material 7B.

Further, in the present embodiment, the steel base material 2 and the inter-beam steel frame member 12 are, when viewed from the wall width direction Z as shown in FIG. It is arranged in such a manner that it interferes with the material 2. In the illustrated example, the stud 4 is split vertically to avoid interference with the flange 16 and is supported by upper and lower runners 3 respectively.

According to the first embodiment of the present invention as described above, the rigidity of the wall structure 1 can be ensured by arranging the steel frame members 12 inside the wall structure 1 . In addition, by arranging the first sound absorbing material 7A in contact with the steel frame member 12, the incident energy of the sound transmitted through the steel frame member 12 can be absorbed, and the sound insulation performance of the wall structure 1 can be improved. can. Although the first sound absorbing material 7A is arranged on both sides of the web 17 of the inter-beam steel frame member 12 in the above embodiment, the first sound absorbing material 7A may be arranged only on one side of the web 17. FIG. Moreover, the sound insulation performance of the wall structure 1 can be improved by arranging the second sound absorbing material 7B. By arranging the second sound absorbing material 7B so as to stand on its own between the steel base materials 2 without being fixed to the steel base material 2, the construction cost of the second sound absorbing material 7B can be reduced.

(Second embodiment)
FIG. 5 is a cross-sectional view of a wall structure according to a second embodiment of the invention. Note that the configuration of this embodiment is the same as that of the first embodiment except for the wall structure shown in FIG. 5, so redundant detailed description will be omitted.

As shown in FIG. 5, the sound absorbing material 7 of the wall structure 1B of this embodiment has only the first sound absorbing material 7A arranged in contact with the web 17. As shown in FIG. That is, unlike the first embodiment, the second sound absorbing material 7B is not arranged in this embodiment. As shown in Examples described later, when the second sound absorbing material 7B is omitted, the sound insulation performance in the high frequency band is deteriorated, but the deterioration in the sound insulation performance in the low frequency band is relatively small. Therefore, for example, when the sound insulation performance required in a high frequency band is not high, the configuration of the second embodiment as described above is adopted to reduce the amount of sound absorbing material used, and the manufacturing cost of the wall structure 1B is reduced. may be reduced.

(Third embodiment)
FIG. 6 is a cross-sectional view of a wall structure according to a third embodiment of the invention. Note that the configuration of this embodiment is the same as that of the first embodiment except for the wall structure shown in FIG. 6, so redundant detailed description will be omitted.

As shown in FIG. 6, the second sound absorbing material 7B of the wall structure 1C of this embodiment is formed so as to continue from the lower end of the inter-beam steel frame member 12 to the floor-side slab 11. As shown in FIG. That is, in this embodiment, the first sound absorbing material 7A and the second sound absorbing material 7B are arranged adjacent to each other with the flange 16 interposed therebetween. In this case, the sound insulation performance can be further improved compared to the first and second embodiments described above. However, the manufacturing cost of the wall structure 1C increases as the amount of sound absorbing material used increases. Therefore, for example, it is preferable to properly use the wall structures 1 and 1B according to the first and second embodiments and the wall structure 1C according to the present embodiment depending on the required sound insulation performance.

(Example)
Hereinafter, tests conducted to compare the sound insulation performance of the wall structures of the embodiments of the present invention will be described.

7 and 8 are graphs showing the results of tests conducted to compare sound insulation performance. The horizontal axis of FIG. 7 is the 1/3 octave band center frequency (Hz), and the vertical axis is the sound transmission loss (dB). In the test, a sound source of a predetermined frequency was placed on one side of the wall structure 1 and the sound transmission loss was measured when the sound was received on the opposite side of the wall structure 1 . The test was conducted according to the measurement method described in JIS A 1416 (Method for measuring aerial sound insulation performance of building members in laboratories).

FIG. 7 shows the wall structure of the second embodiment (only the first sound absorbing material 7A is arranged) and a comparative example (wall structure without the sound absorbing material) in which the sound absorbing material is omitted from the wall structure of the second embodiment. 1 is a graph showing the results of a test conducted to compare the sound insulation performance of As shown in FIG. 7, by arranging the first sound absorbing material 7A in contact with the inter-beam steel frame member 12, the sound is insulated particularly in the low frequency band to the middle frequency band (band of 63 Hz to 500 Hz at the 1/3 octave band center frequency). It was confirmed that the performance was improved.

FIG. 8 is a graph showing the results of tests conducted to compare the sound insulation performances of the wall structures of the first embodiment, the second embodiment, and the third embodiment. As shown in FIG. 8 , particularly in a high frequency band, the wall structure 1 of the first embodiment, to which the second sound absorbing material 7B is added, has higher sound insulation performance than the wall structure 1B of the second embodiment. Further, the wall structure 1C of the third embodiment, in which the area of the second sound absorbing material 7B is larger than that of the wall structure 1 of the first embodiment, has higher sound insulation performance. From this result, it was found that sound absorbing material such as the second sound absorbing material 7B placed in the lower part of the wall structure improves the sound insulation performance in the high frequency band, and that the sound insulation performance is further improved by increasing the installation amount of the sound absorbing material. know that it can be improved.

On the other hand, the difference in sound insulation performance in the low frequency band between each example is relatively small. From this result, it can be seen that the sound insulation performance in the low frequency band is predominantly improved by the first sound absorbing material 7A in contact with the inter-beam steel frame member 12. FIG. Therefore, for example, if it is desired to preferentially improve the sound insulation performance in the low frequency band with respect to cost constraints, the wall structure 1 of the first embodiment or the wall structure 1B of the second embodiment may be advantageous. .
Moreover, when the sound absorbing material is installed on the entire surface as in the wall structure 1C of the third embodiment, there is a possibility that heat builds up in the event of a fire or the like and the wall material falls off prematurely. Therefore, the fireproof performance can be improved by partially installing the sound absorbing material as in the wall structure 1 of the first embodiment or the wall structure 1B of the second embodiment.

Although the preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention belongs can conceive of various modifications or modifications within the scope of the technical idea described in the claims. It is understood that these also naturally belong to the technical scope of the present invention.

Specifically, for example, in the above-described embodiment, the inter-beam steel frame member 12 is made of H-shaped steel. For example, square steel pipes, circular steel pipes, or other steel pipes may be employed as the inter-beam steel frame members 12 . When a steel pipe is employed as the inter-beam steel frame member 12, the sound absorbing material 7 may be arranged inside the steel pipe. Moreover, as the inter-beam steel frame member 12, a concrete-filled steel tube (CFT) may be adopted. By using at least one of H-section steel, square steel pipe, circular steel pipe, and concrete-filled steel pipe as the inter-beam steel frame member 12, the strength of the steel frame member as a building structural material can be ensured.

Moreover, although the said embodiment demonstrated the example which arrange|positions the 1st sound-absorbing material 7A in contact with the inter-beam steel-frame member 12, it does not restrict to this. Alternatively, the first sound absorbing material may be arranged on a steel frame member extending in the in-plane direction of the finishing material 6, for example, a columnar steel frame member extending in the height direction Y.

DESCRIPTION OF SYMBOLS 1, 1B, 1C... Wall structure, 2... Steel base material, 3... Runner, 4... Stud, 6... Finishing material, 7... Sound absorbing material, 7A... First sound absorbing material (sound absorbing material), 7B... Second sound absorbing material Material (lower sound absorbing material), 10... Building, 11... Slab, 12... Inter-beam steel frame member (steel frame member), 13... Girder row steel frame member, 14... Concrete column, 16... Flange, 17... Web.

Claims (4)

A wall structure separating each floor of a hierarchical building into at least two compartments,
a pair of facings respectively facing the two compartments;
a steel frame member extending in the in-plane direction of the finishing material in the space between the pair of finishing materials and forming a structural material of the building;
a sound absorbing material disposed in contact with the steel frame member in the space between the pair of finishing materials ;
a lower sound absorbing material arranged in the lower part of the wall structure and independent in the space between the pair of finishing materials;
with
The steel member is positioned on top of the wall structure and is an H-beam having a pair of flanges and a web,
The sound absorbing material is arranged between the pair of flanges in contact with the flanges,
A wall structure in which an air space is formed between the lower sound absorbing material and the steel frame member . 2. The wall structure according to claim 1, wherein said steel members are not coated with a fire resistant coating. 3. A wall structure according to claim 1 or claim 2 , wherein the sound absorbing material is at least one of ceramic wool, glass wool and rock wool. 4. A wall according to any one of the preceding claims, wherein the finishing material comprises a refractory board of at least one of a gypsum board, a rock wool board, a calcium silicate board, an ALC board and a GRC board. structure.

Images