JP6884914B1 - Interior wall mounting structure, building and interior wall design method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate an installation work of an interior wall 3 and to make the interior wall 3 have both sound insulation performance and bending performance. SOLUTION: The mounting structure of an interior wall 3 provided on a skeleton wall 2 is arranged in a row along the skeleton wall 2 at a position separated from the skeleton wall 2, and is fixed to a floor slab 7 and a ceiling slab 9 or a beam. A wall base 4 including a plurality of long members (studs 6), an interior board 5 fixed to the wall base 4, and a foam adhesive 11 for fixing the wall base 4 to the skeleton wall 2 are provided. The foam adhesive 11 is provided only at one place in the middle portion of the long member (6) in the vertical direction. [Selection diagram] Fig. 1

Description

The present disclosure relates to an interior wall mounting structure for mounting an interior wall on a reinforced concrete skeleton wall of a building, a building having the interior wall mounted thereby, and a method for designing the interior wall.

In a building such as an apartment house, a concrete skeleton wall is provided on the doorway wall where sound insulation is required. The skeleton wall may have a double structure in which an interior board such as gypsum board is provided in the vicinity of the wall surface on the indoor side to form the interior wall (for example, Patent Document 1). In the mounting structure of the interior board described in Patent Document 1, the upper runner and the lower runner mounted on the lower surface of the ceiling slab and the upper surface of the floor slab in the vicinity of the skeleton wall, and the studs erected on the upper runner and the lower runner, respectively. A board base (base of the interior wall) is formed from the lightweight steel frame (LGS)) and urethane foam foam injected between the stud and the skeleton wall, and the interior board is attached to the interior side surface of the board base. In this mounting structure, the studs are long lightweight steel-framed members having a substantially C-shaped cross section, and are arranged at a pitch of about 303 mm or about 455 mm according to the thickness of the interior board. Urethane foam is injected between the skeleton wall and the stud at a pitch of 900 mm or less in the vertical direction.

As the LGS base, a material having a width of about 40 mm and a thickness of 40 to 45 mm is generally used. There are LGS substrates with a width of about 40 mm and a thickness of 20 to 25 mm as products, but LGS substrates of this size are often used for partition walls that do not require high sound insulation performance.

In this mounting structure, the urethane foam foam acts as an adhesive to fix the studs to the skeleton wall, and since the urethane foam adhesive does not have a vibration insulating effect, sound waves generated outdoors and transmitted through the skeleton wall are inside. Vibrate the board and allow it to pass through the room. Therefore, the applicant has proposed an interior wall mounting structure for reducing the noise transmitted into the room (Patent Document 2). The mounting structure of this interior wall is fixed at an intermediate position in the height direction between the wall base made of LGS, which is arranged at a position away from the skeleton wall and fixed to the ceiling slab and the floor slab, and is fixed to the skeleton wall. A support member that projects toward the wall and an interior board that is fixed to the surface of the wall base are provided, and the support member has a vibration insulating material that abuts or faces the skeleton wall at the free end. This prevents or reduces noise from being transmitted from the skeleton wall to the interior wall via the support member.

Japanese Unexamined Patent Publication No. 2002-061371 Japanese Unexamined Patent Publication No. 2015-169041

However, in the mounting structure of the interior board described in Patent Document 2, it is necessary to fix the support member to the wall base so that the vibration insulating material provided at the free end of the support member abuts or faces the skeleton wall. , It takes time to install. Moreover, since the support member is used, the number of parts increases.

On the other hand, in the mounting structure of the interior board described in Patent Document 1, since the stud (wall base material) can be fixed to the skeleton wall by injecting urethane foam, the mounting work is easy. On the other hand, in this mounting structure, as pointed out in Patent Document 2, sound wave vibration transmitted through the skeleton wall is transmitted in order to the urethane foam, the wall base, and the interior board, and easily propagates indoors. In order to suppress the propagation of sound wave vibration, it is preferable to reduce the number of fixed points on the skeleton wall. The sound insulation performance increases as the number of fixed points on the wall base decreases.

However, as the number of fixed points decreases, the amount of bending of the long member constituting the wall base increases. It is conceivable to increase the cross-sectional dimension of the long member in order to suppress the amount of bending of the long member, but doing so increases the dimension from the skeleton wall to the interior board and narrows the interior space.

Further, in the conventional mounting structure of the interior board, the sound insulation performance is deteriorated due to the resonance of the interior board at a specific frequency. The frequency at which this deterioration in sound insulation performance occurs is complicatedly related to various conditions such as the thickness of the air layer between the skeleton wall and the interior board, the cross-sectional dimensions of the wall base material, the number of fixed points, and the thickness of the interior board. There is. Therefore, it is difficult to accurately predict the sound insulation performance and the bending performance of the interior wall, and the appropriate specifications of the interior wall that can achieve both the sound insulation performance and the bending performance have not been shown so far.

In view of such a background, it is an object of the present invention to facilitate the mounting work of the interior wall and to make the interior wall have both sound insulation performance and bending performance.

In order to solve such a problem, an embodiment of the present invention is a mounting structure of an interior wall (3) provided on the skeleton wall (2), which is placed on the skeleton wall at a position away from the skeleton wall. A wall base (4) including a plurality of long members (6) arranged in a row along the floor slab (7) and fixed to a ceiling slab (9) or a beam, and an interior fixed to the wall base. A board (5) and a foam adhesive (11) for fixing the wall base to the skeleton wall are provided, and the foam adhesive is provided only at one place in the middle portion of the long member in the vertical direction. ing.

According to this configuration, the wall base can be fixed to the skeleton wall using a foam adhesive, and it is not necessary to fix another member to the wall base or the skeleton wall, so that the interior wall can be easily attached. In addition, since the foam adhesive is provided only at one place in the middle of the long member in the vertical direction, the sound insulation performance of the interior wall is improved as compared with the case where the foam adhesive is provided at two or more places in the vertical direction. Can be improved. Furthermore, by providing the foam adhesive in the middle part of the long member, the interior is decorated while suppressing the deterioration of the sound insulation performance of the interior wall as compared with the case where the long member is not fixed to the skeleton wall in the middle part in the vertical direction. It is possible to suppress the bending of the wall.

Preferably, the plurality of the elongated members (6) have a thickness of 20 mm or more and 25 mm or less, are arranged in the horizontal direction at a pitch of 283 mm or more and 323 mm or less, and the foamed adhesive (11) is a plurality of the above. It is preferable that it is provided for all the long members.

According to this configuration, since the thickness of the long member is thinner than that generally used, the indoor space can be expanded. On the other hand, the bending performance of each long member is lower than that of generally used ones (thickness of 40 to 45 mm), but the long members are arranged at a pitch of 283 mm or more and 323 mm or less, and all the lengths. By fixing the scale member to the skeleton wall with a foam adhesive, it is possible to secure the required bending performance for the interior wall. Further, even if the foam adhesive is provided for all the long members, it is possible to suppress the deterioration of the sound insulation performance of the interior wall by providing the foam adhesive only at one place in the intermediate portion in the vertical direction.

Preferably, the plurality of the elongated members (6) have a thickness of 40 mm or more and 45 mm or less, are arranged in the horizontal direction at a pitch of 283 mm or more and 323 mm or less, and the foamed adhesive (11) is a plurality of the above. It is preferable that every other long member is provided.

According to this configuration, by arranging the long members at a pitch of 283 mm or more and 323 mm or less, it is possible to secure the required bending performance on the interior wall. Further, by providing the foam adhesive every other long member, it is possible to suppress the deterioration of the sound insulation performance of the interior wall.

Further, in order to solve the above problems, an embodiment of the present invention is a method of designing an interior wall (3) provided on the skeleton wall (2), in which the interior wall is separated from the skeleton wall. A wall base (4) including a plurality of long members (6) arranged in a row along the skeleton wall and fixed to a floor slab (7) and a ceiling slab (9) or a beam, and the wall base. The structure is provided with an interior board (5) fixed to the interior board (5) and a foam adhesive (11) for fixing the wall base to the skeleton wall, and the foam adhesive is applied to the intermediate portion of the long member in the vertical direction. It shall be provided in only one place.

Preferably, when the plurality of long members (6) have a thickness of 20 mm or more and 25 mm or less, the horizontal pitch of the long members is 283 mm or more and 323 mm or less, and the foam adhesive (11). Shall be provided for all of the plurality of long members.

Preferably, when the plurality of long members (6) have a thickness of 40 mm or more and 45 mm or less, the horizontal pitch of the long members is 283 mm or more and 323 mm or less, and the foam adhesive (11). Is provided every other long member for a plurality of the long members.

Preferably, the skeleton wall (2) includes a door boundary wall and an outer wall of an apartment house, and the thickness of the long member (6) of the interior wall (3) provided with respect to the door boundary wall is 20 mm or more. And it shall be 25 mm or less.

In a plate-shaped house, which is a typical example of an apartment house, the extension of the doorway wall is often longer than the extension of the outer wall. According to this configuration, the interior space can be expanded by setting the thickness of the long member provided on the door boundary wall to 20 mm or more and 25 mm or less.

As described above, according to the present invention, it is possible to facilitate the mounting work of the interior wall and to make the interior wall have both sound insulation performance and bending performance.

A perspective view showing a schematic configuration of a double-structured wall according to an embodiment (Fig. A shows a state in which a wall base is formed, and FIG. B shows a state in which an interior board is attached to the wall base). Longitudinal section of the first embodiment of the double-structured wall Cross-sectional view of the double-structured wall shown along lines III-III of FIG. Longitudinal section of the second embodiment of the double-structured wall Cross-sectional view of the double-structured wall shown along the VV line of FIG. Graph showing sound insulation performance according to the horizontal fixed pitch of the interior wall using LGS with a thickness of 45 mm A graph showing sound insulation performance according to the fixed pitch in the horizontal direction and the number of fixed points in the vertical direction of the interior wall using LGS with a thickness of 25 mm. Graph showing sound insulation performance according to the thickness of LGS and the fixed pitch in the horizontal direction of the interior wall

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing a schematic configuration of a double-structured wall 1 according to an embodiment, FIG. 1 shows a state in which a wall base 4 is formed, and FIG. 1 b shows an interior board 5 attached to the wall base 4. Indicates the state. The double structure wall 1 is applied to the outer wall and the door boundary wall of a reinforced concrete (RC) building used as an apartment house. The double-structured wall 1 has a double-structured structure in which an interior wall 3 is provided along the surface of an RC skeleton wall 2 forming an outer wall or a doorway wall of a building. In the portion where the double-structured wall 1 forms the outer wall of the building, the interior wall 3 is provided only inside the skeleton wall 2. In the portion where the double-structured wall 1 forms the door boundary wall of the building, the interior wall 3 is provided on both sides of the skeleton wall 2. The interior wall 3 is formed as a puffy wall by a wall base 4 provided at a position separated from the skeleton wall 2 and an interior board 5 attached to the wall base 4.

As shown in FIG. 1A, the wall base 4 is formed at a position slightly separated from the skeleton wall 2 forming the door boundary wall of the apartment house (that is, with a clearance). The clearance of the wall base 4 with respect to the skeleton wall 2 may be about 10 to 15 mm. The wall base 4 is made of a lightweight steel frame (LGS) which is a long member, and includes a plurality of studs 6 (longitudinal members) built in a row and vertically along the skeleton wall 2. The lower end of the stud 6 is fixed to the floor slab 7 via a lower runner 8 fixed to the upper surface of the floor slab 7 so as to extend along the lateral direction (length direction) of the skeleton wall 2. The upper end of the stud 6 is fixed to the ceiling slab 9 via an upper runner 10 which is fixed to the lower surface of the ceiling slab 9 so as to extend along the lateral direction of the skeleton wall 2. The wall base 4 is composed of the stud 6, the lower runner 8 and the upper runner 10. The upper runner 10 may be fixed to the lower surface of the beam when the beam projects from the lower surface of the ceiling slab 9.

The lower runner 8 and the upper runner 10 are long members having a groove-shaped cross-sectional shape, and are arranged so that the groove openings face each other. The lower runner 8 is fixed to the floor slab 7 by driving a pin (not shown) into the floor slab 7 with the lower surface in contact with the upper surface of the floor slab 7. The upper runner 10 is fixed to the ceiling slab 9 by driving a pin (not shown) into the ceiling slab 9 with the upper surface in contact with the lower surface of the ceiling slab 9. The stud 6 has a quadrangular hollow cross-sectional shape, and the lower end and the upper end are inserted into the grooves of the lower runner 8 and the upper runner 10, and are screwed to the lower runner 8 and the upper runner 10.

The stud 6 may be a general-purpose product having a width of about 40 mm (the lateral dimension of the skeleton wall 2). Depending on the position where the interior wall 3 is provided, the stud 6 may have an appropriate thickness (dimensions in the thickness direction of the skeleton wall 2). The thickness of the stud 6 may be, for example, 20 mm, 25 mm, 40 mm, 45 mm. The lower runner 8 and the upper runner 10 have a groove width (a width slightly larger than the thickness of the stud 6 at the groove bottom and slightly smaller than the thickness of the stud 6 at the opening) according to the thickness of the stud 6. However, a stud 6 capable of elastically holding the stud 6 is used.

The vertical intermediate portion of the stud 6 is fixed to the skeleton wall 2 by the foam adhesive 11. The foamed adhesive 11 may be any one having foamability and adhesiveness, and may be, for example, a foamed polystyrene-based adhesive or a foamed urethane-based adhesive. Further, the foam adhesive 11 may be a moisture-curable type having one component or a mixed-curable type having two or more components, as long as it is foam-curable. The foam adhesive 11 is injected into the gap between the skeleton wall 2 and the stud 6, and is foam-cured to fix the stud 6 to the skeleton wall 2.

As shown in FIG. 1 (b), the interior wall 3 of the living room is formed by fixing the interior board 5 to the surface of the wall base 4 on the side opposite to the skeleton wall 2. The interior board 5 is screwed to the stud 6. The interior board 5 may be screwed not only to the stud 6 but also to the lower runner 8 and the upper runner 10. The interior board 5 is a general-purpose gypsum board, and is generally a rectangle having a size of 910 mm × 1820 mm. The interior board 5 is attached to the wall base 4 in a vertically long orientation (a width of 910 mm and a height of 1820 mm). The thickness of the interior board 5 is not limited to these, but may be 9.5 mm, 12.5 mm, 15 mm, or the like.

As shown in FIG. 1A, the interior wall 3 of the living room is restricted from bending toward the skeleton wall 2 by fixing the vertical intermediate portion of the stud 6 to the skeleton wall 2 with the foam adhesive 11. Will be done.

FIG. 2 is a vertical cross-sectional view of the first embodiment of the double-structured wall 1, and FIG. 3 is a cross-sectional view of the double-structured wall 1 shown along the line III-III of FIG. The first embodiment is suitable for a doorway wall of a building, but may be applied to an outer wall. In the illustrated example, the double-structured wall 1 of the first embodiment is applied to the door boundary wall in which the interior walls 3 are provided on both sides of the skeleton wall 2. When applied to the outer wall, the interior wall 3 is provided only on one side of the skeleton wall 2. In the first embodiment, the cross-sectional dimensions of the stud 6 of the wall base 4 are 40 mm in width and 20 mm or 25 mm in thickness.

As shown in FIG. 2, the lower runner 8 and the upper runner 10 are fixed to the floor slab 7 and the ceiling slab 9 at positions slightly separated from the surface of the skeleton wall 2. The stud 6 is separated from the skeleton wall 2 over the entire length. As shown in FIG. 3, the horizontal pitch (distance between centers) of the studs 6 is 303 mm. The position of the stud 6 may be displaced in the horizontal direction by about 10 mm, and a part of the pitch may be 283 mm to 323 mm. The interior board 5 has a width of 910 mm as described above, is arranged so that both side edges are located at the center of the studs 6, and is fixed to the four studs 6 by a plurality of screws 12. .. The foam adhesive 11 is provided for all of the studs 6.

FIG. 4 is a vertical cross-sectional view of the second embodiment of the double-structured wall 1, and FIG. 5 is a cross-sectional view of the double-structured wall 1 shown along the VV line of FIG. The second embodiment is suitable for the outer wall of a building, but may be applied to a doorway wall. In the illustrated example, the double-structured wall 1 of the second embodiment is applied to the door boundary wall in which the interior walls 3 are provided on both sides of the skeleton wall 2. When applied to the outer wall, the interior wall 3 is provided only on one side of the skeleton wall 2. In the second embodiment, the cross-sectional dimensions of the stud 6 of the wall base 4 are 40 mm in width and 40 mm or 45 mm in thickness.

As shown in FIG. 4, the lower runner 8 and the upper runner 10 are fixed to the floor slab 7 and the ceiling slab 9 at positions slightly separated from the surface of the skeleton wall 2, and the stud 6 is separated from the skeleton wall 2 over the entire length. doing. As shown in FIG. 5, the horizontal pitch of the stud 6 is 303 mm. The position of the stud 6 may be displaced in the horizontal direction by about 10 mm, and a part of the pitch may be 283 mm to 323 mm. The interior board 5 has a width of 910 mm as described above, is arranged so that both side edges are located at the center of the studs 6, and is fixed to the four studs 6 by a plurality of screws 12. .. On the other hand, the foam adhesive 11 is provided every other one with respect to the stud 6. That is, the fixed pitch of the stud 6 in the horizontal direction with respect to the skeleton wall 2 is 606 mm.

Since the double-structured wall 1 has such a configuration, the wall base 4 (specifically, the vertical intermediate portion of the stud 6) is fixed to the skeleton wall 2 by using the foam adhesive 11. Therefore, it is not necessary to fix another member to the wall base 4 or the skeleton wall 2, so that the interior wall 3 can be easily attached.

Further, the first embodiment and the second embodiment of the double-structured wall 1 are configured in this way to achieve both a high sound insulation structure and a high bending performance (performance that is difficult to bend) of the interior wall 3. Hereinafter, the performance of the double structure wall 1 will be described.

The interior wall 3 using LGS for the stud 6 has a characteristic that the sound insulation performance is lowered at a specific frequency due to the resonance between the air layer in the wall and the interior board 5. Therefore, there is a drawback that the sound insulation performance of the double-structured wall 1 may be significantly lowered depending on the combination of conditions such as the air layer size, the cross-sectional size of the stud 6, the number of fixed points with respect to the skeleton wall 2, and the thickness of the interior board 5. there were. Generally, the sound insulation performance is more advantageous as the number of fixed points of the interior wall 3 with respect to the skeleton wall 2 is smaller, but if the number of fixed points is reduced too much, the amount of bending of the interior wall 3 increases. Furthermore, it is difficult to predict both performances because they are complicatedly related to other conditions, and so far, the appropriate specifications of the interior wall 3 that can achieve both sound insulation performance and bending performance have not been shown.

Generally, in the LGS used for the stud 6, a member having a cross-sectional dimension of 40 mm in width and 40 to 45 mm in thickness is often used. In that case, the total thickness of the finish of the interior wall 3 including the clearance of the stud 6 with respect to the skeleton wall 2 and the thickness of the interior board 5 needs to be about 70 to 100 mm, which has a drawback that the living space is narrowed accordingly. .. A thin LGS with a thickness of about 25 mm is also commercially available, and if it is used, it is effective in securing a living space. It was rarely done.

Therefore, the present inventor has clarified the relationship between the specification conditions of the interior wall 3 (cross-sectional dimensions and fixed points of the stud 6, clearance dimensions, thickness of the interior board 5) and the sound insulation performance and the bending performance by experiments, and the stud 6 We have found the optimum specifications that do not reduce both performances for each cross-sectional dimension.

First, the inventor created a full-scale test piece of the double-structured wall 1 applied to the doorway wall, and conducted an experiment to measure the difference in spatial sound pressure level between the two rooms partitioned by the doorway wall (hereinafter). , The first experiment). The difference in sound pressure level between rooms indicates that the larger the value, the higher the sound insulation performance of the double-structured wall 1. In the first experiment, two test bodies (first and second test bodies) in which studs 6 having a thickness of 45 mm were arranged at a pitch of 303 mm in the horizontal direction were prepared. In the first test piece, the foam adhesive 11 was provided on all of the studs 6, and the horizontal fixing pitch of the interior wall 3 with respect to the skeleton wall 2 was set to 303 mm. In the second test body, the foam adhesive 11 was provided every other stud 6 and the horizontal fixing pitch of the interior wall 3 with respect to the skeleton wall 2 was set to 606 mm (same as the configuration shown in FIG. 5). The number of fixed points in the vertical direction of the stud 6 was 1 for both test specimens (same as the configuration shown in FIG. 4).

In addition, the bending performance of both test pieces was confirmed. To confirm the bending performance, a predetermined lateral load was applied to the interior wall 3 of the test piece, and the bending of the interior wall 3 was visually determined. Both the first and second test pieces were able to confirm the desired bending performance.

In the sound insulation performance test, the spatial sound pressure level difference of three octave bands having octave band center frequencies of 125 Hz, 250 Hz, and 500 Hz was measured for each test piece. FIG. 6 is a graph showing the results of the first experiment, and shows the sound insulation performance according to the fixed pitch in the horizontal direction of the interior wall 3 using the studs 6 having a thickness of 45 mm. In addition to the experimental results, the graph also shows the grade curves of the air noise blocking performance of Dr-45, Dr-50, and Dr-55. The Dr value is the sound insulation performance defined in JIS A1419: 2000 (ISO 717-1: 1996), and Dr-50 is a general performance as a sound insulation performance standard for an apartment house.

As shown in FIG. 6, the second test piece having a fixed pitch of 606 mm showed higher sound insulation performance at all frequencies than the first test piece having a fixed pitch of 303 mm. Further, the first test piece having a fixed pitch of 303 mm was lower than the sound insulation performance of Dr-50 at 125 Hz, but the second test piece having a fixed pitch of 606 mm had the sound insulation performance of Dr-50 at all frequencies. Exceeded.

From these facts, when the stud 6 having a thickness of 45 mm is used, the sound insulation performance deteriorates when the fixed pitch in the horizontal direction becomes small. Therefore, it is preferable to set the fixed pitch to 606 mm.

In addition, the inventor created a small test piece of the double-structured wall 1 applied to the door boundary wall, measured the vibration acceleration of the interior board 5 in each of the two rooms partitioned by the door boundary wall, and measured the vibration acceleration level. An experiment was conducted to determine the amount of reduction (hereinafter referred to as the second experiment). The vibration acceleration level reduction amount is the reduction amount of the vibration acceleration of the interior board 5 of the adjacent room with respect to the vibration acceleration of the interior board 5 of the room on the noise source side, and the larger the value, the higher the sound insulation performance. In the second experiment, three test bodies (third to fifth test bodies) in which studs 6 having a thickness of 25 mm were arranged at a pitch of 303 mm in the horizontal direction were prepared. In the third test piece, the horizontal fixing pitch of the interior wall 3 with respect to the skeleton wall 2 was set to 606 mm, and the number of fixed points of the stud 6 in the vertical direction was set to 1. In the fourth test piece, the horizontal fixing pitch of the interior wall 3 with respect to the skeleton wall 2 was set to 303 mm, and the number of fixed points in the vertical direction was set to 2. In the fifth test piece, the horizontal fixing pitch of the interior wall 3 with respect to the skeleton wall 2 was set to 303 mm, and the number of fixed points in the vertical direction was set to 1.

In addition, the bending performance of each test piece was confirmed. For confirmation of the bending performance, a predetermined lateral load was applied to the interior wall 3 of the test piece, and the bending of the interior wall 3 was visually determined as in the first experiment. Since the fixed pitch in the horizontal direction of the third test piece was large, the amount of bending was large, and the desired bending performance could not be confirmed. Both the 4th and 5th test pieces were able to confirm the desired bending performance.

In the sound insulation performance test, the vibration acceleration levels of three octave bands having octave band center frequencies of 125 Hz, 250 Hz, and 500 Hz were measured for each test piece. FIG. 7 is a graph showing the results of the second experiment, and shows the sound insulation performance according to the fixed pitch in the horizontal direction and the fixed points in the vertical direction of the interior wall 3 using the studs 6 having a thickness of 25 mm.

As shown in FIG. 7, in the third test piece having a fixed pitch of 606 mm and a fixed number of fixed points in the vertical direction of 1, the bending performance was low, but good sound insulation performance was obtained at all frequencies. In particular, high sound insulation performance was obtained in the high frequency range of 500 Hz. In the fourth test piece with a fixed pitch of 303 mm and a fixed number of points in the vertical direction of 2, high sound insulation performance was obtained in the high frequency range of 500 Hz, but the sound insulation performance was low at all frequencies compared to the third test piece. It was. The fifth test piece with a fixed pitch of 303 mm and a fixed number of points in the vertical direction had lower sound insulation performance than the third test piece in the high frequency range of 500 Hz, but good sound insulation performance was obtained at all frequencies. Was done.

From these facts, it can be seen that when the stud 6 having a thickness of 25 mm is used, the bending performance cannot be ensured if the fixed pitch in the horizontal direction is set to 606 mm. Further, it can be seen that when the fixed pitch in the horizontal direction is set to 606 mm, the bending performance can be ensured, but when the number of fixed points in the vertical direction is set to 2, the sound insulation performance is lower than when this is set to 1. Therefore, when the stud 6 having a thickness of 25 mm is used, the fixed pitch in the horizontal direction may be 303 mm, and the number of fixed points in the vertical direction may be 1.

In this way, by providing the foam adhesive 11 only at one place in the middle of the stud 6 in the vertical direction, the sound insulation of the interior wall 3 is compared with the case where the foam adhesive 11 is provided at two or more places in the vertical direction. Performance can be improved. Further, by providing the foam adhesive 11 in the middle portion of the stud 6, the interior wall 3 is suppressed from being deteriorated in sound insulation performance as compared with the case where the stud 6 is not fixed to the skeleton wall 2 in the middle portion in the vertical direction. The bending of the wall 3 can be suppressed.

Therefore, when designing the interior wall 3 provided on the skeleton wall 2, the wall base 4 is fixed to the skeleton wall 2 by the foam adhesive 11, and the foam adhesive 11 is applied to the intermediate portion of the stud 6 in the vertical direction. It shall be provided in only one place. As a result, the wall base 4 can be fixed to the skeleton wall 2 by using the foam adhesive 11, and it is not necessary to fix another member to the wall base 4 or the skeleton wall 2, so that the interior wall 3 can be easily attached. Further, since the foam adhesive 11 is provided only at one place in the middle of the stud 6 in the vertical direction, the sound insulation of the interior wall 3 is compared with the case where the foam adhesive 11 is provided at two or more places in the vertical direction. Performance can be improved. Further, by providing the foam adhesive 11 in the middle portion of the stud 6, the sound insulation performance of the interior wall 3 is suppressed from being deteriorated as compared with the case where the stud 6 is not fixed to the skeleton wall 2 in the middle portion in the vertical direction. The bending of the interior wall 3 can be suppressed.

Furthermore, as in the first experiment, the inventor created a full-scale test piece of the double-structured wall 1 applied to the doorway wall, and calculated the difference in spatial sound pressure level between the two rooms partitioned by the doorway wall. An experiment was conducted to measure (hereinafter referred to as the third experiment). In the third experiment, the studs 6 were arranged at a pitch of 303 mm in the horizontal direction, and three test specimens (sixth to eighth specimens) in which the number of fixed points in the vertical direction of the stud 6 was one were prepared. In the sixth test piece, a stud 6 having a thickness of 45 mm was used, and the fixed pitch in the horizontal direction was set to 303 mm. In the seventh test piece, a stud 6 having a thickness of 25 mm was used, and the fixed pitch in the horizontal direction was set to 606 mm. In the eighth test piece, a stud 6 having a thickness of 25 mm was used, and the fixed pitch in the horizontal direction was set to 303 mm. The sixth test body has the same configuration and the same size (that is, the same) as the second test body, and the seventh test body has the same configuration and size difference (that is, similar) as the third test body. Yes, the eighth test piece has the same configuration as the fifth test piece and is different in size (similarity).

The bending performance confirmed for each test piece was similar to the results of the first and second experiments. That is, the 6th and 8th test bodies could confirm the desired bending performance as well as the 2nd and 5th test bodies. Further, the seventh test body, like the third test body, could not confirm the desired bending performance.

The sound insulation performance test was performed in the same manner as in the first experiment. FIG. 8 is a graph showing the results of the third experiment, showing the sound insulation performance according to the thickness of the stud 6 and the fixed pitch in the horizontal direction of the interior wall 3. As shown in FIG. 8, the sixth to eighth test pieces showed good sound insulation performance at all frequencies. The sixth test piece is slightly below the sound insulation performance curve of Dr-50 in the low frequency range of 125 Hz, but according to JIS A 1419-1: 2000 (ISO 717-1: 1996), "the measurement result is graded. It is allowed to fall below the value of the curve by a maximum of 2 dB ", and it can be evaluated that the sixth test piece also satisfies the sound insulation performance of Dr-50. In the first experiment, the second test body, which is the same as the sixth test body, showed a sound insulation performance higher than that of Dr-50 even in the low frequency range of 125 Hz, and from this, the sixth test body also showed. It can be seen that the sound insulation performance of is good.

The table below summarizes the results of the above experiments.

As described above, it is preferable that the studs 6 have a thickness of 20 mm or more and 25 mm or less, are arranged at a pitch of 303 mm in the horizontal direction, and the foam adhesive 11 is provided for all of the plurality of studs 6. Since the stud 6 is thinner than the commonly used one, the interior space can be expanded. On the other hand, the bending performance of each stud 6 is lower than that of generally used ones (thickness of 40 to 45 mm), but all of the studs 6 arranged at a pitch of 303 mm are skeleton walls due to the foam adhesive 11. By being fixed to 2, the required bending performance can be ensured for the interior wall 3. Further, even if the foam adhesive 11 is provided for all the studs 6, the deterioration of the sound insulation performance of the interior wall 3 can be suppressed by providing the foam adhesive 11 only at one place in the intermediate portion in the vertical direction.

On the other hand, it is preferable that the studs 6 have a thickness of 40 mm or more and 45 mm or less, are arranged at a pitch of 303 mm in the horizontal direction, and the foam adhesive 11 is provided every other stud 6. By arranging the studs 6 at a pitch of 303 mm, the required bending performance can be ensured on the interior wall 3. Further, by providing the foam adhesive 11 every other one with respect to the plurality of studs 6, it is possible to suppress the deterioration of the sound insulation performance of the interior wall 3.

Therefore, when designing the interior wall 3 provided on the skeleton wall 2, when the stud 6 has a thickness of 20 mm or more and 25 mm or less, the horizontal pitch of the stud 6 is set to 303 mm, and the foam adhesive 11 is used. It shall be provided for all of the plurality of studs 6. When the studs 6 have a thickness of 40 mm or more and 45 mm or less, the horizontal pitch of the studs 6 is 303 mm, and the foam adhesive 11 is provided every other stud 6.

In a plate-shaped house, which is a typical example of an apartment house, the extension of the doorway wall is often longer than the extension of the outer wall. Therefore, when designing the interior wall 3 of an apartment house in which the skeleton wall 2 includes the door boundary wall and the outer wall of the apartment house, the thickness of the stud 6 of the interior wall 3 provided for the door boundary wall is 20 mm or more and It should be 25 mm or less. As a result, the indoor space in contact with the door boundary wall can be expanded.

Although the description of the specific embodiment is completed above, the present invention can be widely modified without being limited to the above embodiment. For example, in the above embodiment, the present invention is applied to the skeleton wall 2 of an apartment house as an example, but the present invention may be applied to the skeleton wall 2 of a building such as an office building, a hotel, a school, or a medical facility. .. Further, in the above embodiment, the stud 6 has a quadrangular hollow cross-sectional shape, but it may have a C-shaped groove shape (groove shape with a lip) or an H-shaped cross-sectional shape. Further, in the above embodiment, the stud 6 is directly fixed to the skeleton wall 2 by the foam adhesive 11, but a fixing member or spacer is provided in the middle portion in the longitudinal direction of the stud 6, and the fixing member or spacer is used. The foamed adhesive 11 may be injected between the skeleton wall 2 and the skeleton wall 2. In this case, the stud 6 is fixed to the skeleton wall 2 by the foam adhesive 11 via a fixing member or a spacer, but the interior wall 3 can be easily attached, and the interior wall 3 has sound insulation performance and bending performance. The point that can be compatible with is the same. In addition, the specific configuration, arrangement, quantity, angle, and the like of each member and portion can be appropriately changed as long as they do not deviate from the gist of the present invention. On the other hand, not all of the components shown in the above embodiments are indispensable, and they can be appropriately selected.

1 Double structure wall 2 Frame wall 3 Interior wall 4 Wall base 5 Interior board 6 Stud (long member)
7 Floor slab 8 Lower runner 9 Ceiling slab 10 Upper runner 11 Foam adhesive 12 Screws

Claims (5)

It is an interior wall mounting structure provided on the skeleton wall.
A wall base including a plurality of long members arranged in a row along the skeleton wall at a position away from the skeleton wall and fixed to the floor slab and the ceiling slab or beam.
The interior board fixed to the wall base and
It is provided with a foam adhesive for fixing the wall base to the skeleton wall.
The plurality of long members have a thickness of 20 mm or more and 25 mm or less, and are arranged in the horizontal direction at a pitch of 283 mm or more and 323 mm or less.
An interior wall mounting structure, wherein the foam adhesive is provided at only one intermediate portion of the long member in the vertical direction with respect to all of the plurality of long members. It is an interior wall mounting structure provided on the skeleton wall.
A wall base including a plurality of long members arranged in a row along the skeleton wall at a position away from the skeleton wall and fixed to the floor slab and the ceiling slab or beam.
The interior board fixed to the wall base and
It is provided with a foam adhesive for fixing the wall base to the skeleton wall.
The plurality of long members have a thickness of 40 mm or more and 45 mm or less, and are arranged in the horizontal direction at a pitch of 283 mm or more and 323 mm or less.
An interior wall mounting structure in which the foam adhesive is provided every other one of the plurality of long members in the vertical direction at only one intermediate portion of the long members. The first interior wall mounted by the mounting structure according to claim 1,
A building comprising a second interior wall mounted by the mounting structure according to claim 2. It is a design method of the interior wall provided on the skeleton wall.
The interior walls are arranged in a row at a position separated from the skeleton wall in a horizontal direction along the skeleton wall at a pitch of 283 mm or more and 323 mm or less, and are fixed to a ceiling slab or a beam and a floor slab with a length of 20 mm or more. A structure including a wall base including a plurality of long members having a thickness of 25 mm or less, an interior board fixed to the wall base, and a foam adhesive for fixing the wall base to the skeleton wall.
A method for designing an interior wall, wherein the foam adhesive is provided at only one intermediate portion of the long member in the vertical direction with respect to all of the plurality of long members. It is a design method of the interior wall provided on the skeleton wall.
The interior walls are arranged in a row at a position separated from the skeleton wall in a horizontal direction along the skeleton wall at a pitch of 283 mm or more and 323 mm or less, and are fixed to a ceiling slab or a beam and a floor slab with a pitch of 40 mm or more and The structure includes a wall base including a plurality of long members having a thickness of 45 mm or less, an interior board fixed to the wall base, and a foam adhesive for fixing the wall base to the skeleton wall.
A method for designing an interior wall, characterized in that the foam adhesive is provided every other one of the plurality of long members at only one intermediate portion of the long members in the vertical direction. ..

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