JP2012017644A - Gapped joint structure of partition wall and construction method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gapped joint structure that prevents a decrease in performance of sound insulation due to sound insulation loss at a joint, without requiring a laminated layer composed of an face bar for an additional overlap.SOLUTION: A joint filler (20) constituting a gapped joint comprises: a joint bottom part (21) constituting a joint bottom: a first leg part (22) seating on a skeleton surface (Ba:Ca:Wa) of a structural skeleton (B:C:W): and a second leg part (23) seating on a face bar surface (6a). A bottom part of a gap (S1:S2) that is formed among ends of face bars (5 and 6) and the skeleton surface and extends along a joint direction is airtightly sealed with a sealant (9). A concealed air layer (30) is formed between a back face of the joint bottom part and the sealant.

Description

  The present invention relates to a joint structure of a partition wall and a construction method thereof, and more particularly, a joint joint of a high-performance sound insulation wall constructed as a door boundary wall, a boundary wall, or a fireproof partition wall of a medium to high-rise building. The present invention relates to a structure and a construction method thereof.

  The partition walls of buildings are required to have various performances such as fireproof performance, fireproof performance, sound insulation performance, vibration insulation performance, vibration insulation performance, heat insulation performance, crime prevention performance, etc. In recent years, there has been a tendency to place particular emphasis on ensuring the independence and comfort of each room.

  A hollow and framed structure in which interior board materials such as gypsum board and calcium silicate board are attached to lightweight steel studs (intercolumns) as non-bearing walls to be constructed as partition walls in medium- and high-rise buildings such as apartment buildings. A dry dry partition wall having a structure (generally referred to as a non-stud structure or a studless structure) in which an interior board material having a reinforcing rib or the like is self-supported and a steel stud stud is omitted is known. . Such a partition wall of the dry construction method is advantageous from the viewpoint of ease of construction and weight reduction of the building, and is widely spread as a wall body such as a door wall, a boundary wall, or a fire-resistant partition wall of a medium to high-rise building. .

The present applicant has developed a high-performance sound insulation wall, Model A-2000 · WI, which has extremely high sound insulation properties, and has already put it into practical use with respect to such a lightweight dry partition wall. This wall is nevertheless a dry partition wall of a wall thickness of about 140 mm, sound insulation performance (sound insulation: TL D _-56) comparable to sound insulation of the concrete wall thickness 260mm are known to exhibit ing. This high-performance sound insulation wall (model A-2000 / WI) is preferably constructed as a boundary wall of an apartment house or a hotel that requires high sound insulation performance, particularly as a boundary wall of a high-rise or super-high-rise apartment house or a hotel, Due to its high sound insulation performance, it has a very significant advantage in combination with the effects of reducing the structural load due to the light weight of the partition walls and shortening the construction period. In this specification, the term "high-performance sound insulating wall" is intended to mean a lightweight partition wall having a TL D _-40 or more sound insulation performance.

  FIG.12 and FIG.13 is the longitudinal cross-sectional view and cross-sectional view which show the structure of the junction part of the said high performance sound-insulating wall (A-2000 * WI) and the structural frame of a building.

  The partition wall 1 of the dry construction method includes a lower runner 2 fixed on the floor structure F1 such as a floor slab, an upper runner 3 fixed to the lower end surface Ba of the beam B on the upper floor by an anchor, and the upper and lower runners. It is comprised from the studs 4 and 7 installed perpendicularly between 2 and 3. The studs 4 are made of lightweight steel studs and are arranged in a staggered arrangement along the wall core. The inter-column 7 disposed at the end of the partition wall 1 is supported by the upper and lower runners 2 and 3 in a state of being close to or in contact with the wall surface Wa of the wall body W, and is erected vertically. A heat insulating and sound absorbing material 15 is disposed in the hollow layer in the partition wall.

  A reinforced gypsum board having a thickness of 21 mm is fixed to the studs 4 by screws as the underlaying face material 5, and a hard gypsum board having a thickness of 9.5 mm is attached to the outside of the underlaying face material 5 by staples and an adhesive as the upholstery face material 6. Fixed to the side.

  The terminal part and upper end part of the partition wall 1 are abutted on the wall body W and the beam B of the reinforced concrete structure that constitute the structural frame of the building. The lower sealing materials 8 and 9 are filled between the end of the lower surface material 5 and the wall surface Wa, the lower end surface Ba and the floor surface Fa, and the upper sealing material 11 is filled with the edge portion and the wall surface of the upper surface material 6. It fills between Wa, lower end surface Ba, and floor surface Fa. For example, rock wool felt is used as the lower sealing material 8, and a urethane resin sealant is used as the lower sealing material 9 and the upper sealing material 11. The structure in which the edge of the face material around the partition wall is hermetically sealed by such different kinds of the underlay sealing material 8, the underlay sealing material 9 and the upholstery sealing material 11 is disclosed in Japanese Patent Application No. Hei 9-169689 filed by the present applicant. (Japanese Patent Laid-Open No. 11-1976) and the like.

  The surface of the upper surface material 6, the upper surface sealing material 11, the wall surface Wa, and the lower end surface Ba (interior surface) is subjected to ground treatment such as putty treatment as necessary, and then painted or cloth-laminated. Interior finishing is performed, and a continuous interior finishing material 10 is laminated on the indoor side wall surface or the like. The coating film or cloth applied or adhered to the surface of the upper surface material 6 is continuous on the surface of the upper seal material 11 of the corner portion, and further continues from the corner portion to the wall surface Wa and the lower end surface Ba. .

  However, in the portion of the upper sealing material 11 arranged in the corner portion where the partition wall and the structural housing are joined in this way or in the vicinity thereof, the coating film or the cloth is likely to be cracked or twisted. It became clear by investigation of this inventor. This is due to the difference between the behavior of the structural frame and the behavior of the partition wall due to external forces such as seismic force and wind pressure acting on the building, and the difference in the behavior of these different structures (dry partition wall and structural frame). This is considered to be the result of the deformation or displacement that concentrates on the corner of the heterogeneous structure joint, or the result that the sealing material applied to the corner of the heterogeneous structure positively absorbed the difference in behavior of the heterogeneous structure. In this specification, “structural frame” means a reinforced concrete structure, steel structure or steel reinforced concrete structure pillar, wall (excluding dry partition walls, mainly load bearing walls, etc.), floor, beam, foundation, or these Means a concrete part, a steel frame part, a steel material, or the like that is structurally continuous or integrated with the part.

  The corner portion of the wall joint portion as shown in FIG. 13 is formed in the same manner also at the joint portion or the intersection portion between the partition wall 1 and the non-bearing wall extending in a direction intersecting or orthogonal to each other. The inventor's investigation that such a joining portion or a corner portion of the intersecting portion is also likely to generate cracks or twists in the coating film or cloth due to a difference in directionality (anisotropy) of the wall body. Further revealed. This is considered to be due to the difference in the behavior of the wall, the secular change such as drying shrinkage, or the influence of transient thermal expansion and contraction. The non-bearing wall includes a lightweight partition wall of a dry construction method, a reinforced concrete wall other than the bearing wall, and the like.

  14 and 15 are a longitudinal sectional view and a transverse sectional view of the partition wall joint portion showing measures against such cracks or twists. 14 and 15 show a partition wall structure in which a see-through joint is formed at the terminal end and upper end of the partition wall shown in FIGS. 12 and 13.

  The partition wall 1 shown in FIG. 14 has a configuration in which a see-through joint J is formed at a joint portion between the upper surface member 6 and the wall surface Wa or the lower end surface Ba. The see-through joint J is formed by omitting the construction of the upper sealing material 11.

  In the partition wall 1 shown in FIG. 15, the overlapping surface material 12 is further overlapped on the indoor side of the upper surface material 6, and the see-through joint J is joined to the overlapping surface material 12 and the wall surface Wa or the lower end surface Ba. It has a structure formed in the part.

  In any of the joints J, the interior finishing material 10 such as a wall surface extends into the joint and extends to the bottom surface of the joint as shown in FIGS.

Japanese Patent Laid-Open No. 11-1976

  According to the dry partition wall of the joint structure shown in FIG. 14, the interior finishing material of the partition wall and the structural housing extends into the joint, and therefore cracks or twists of the interior finishing material occur in the joint. Even if a crack or twist of the interior finishing material occurs, it is difficult to see from the indoor side, and no adverse effects on the architectural design occur. However, in such a partition wall, it has been found that the sound insulation performance of the partition wall is relatively lowered due to the sound insulation deficiency in the see-through joint.

FIG. 16 is a performance diagram showing the sound insulation performance of the partition wall shown in FIG. In FIG. 16, the reference curves of the sound insulation performance TL _D -40, 45, 50, 55, 60 are indicated by broken lines for reference.

As shown in FIG. 16, the sound insulation performance of the partition wall (FIG. 14) in which a see-through joint is formed between the end of the dry partition wall and the structural housing is significantly reduced in the frequency range of 1000 Hz to 4000 Hz. That is, as described above, the high-performance sound insulation wall (FIGS. 12 and 13) in which the upper seal material is applied between the upper face material and the structural frame exhibits the sound insulation performance of TL _D- 56, while in tension surface material and partition wall forming the eye watermarks joint between the structural framework (14), only capable of exhibiting sound insulation performance TL D _-51 by lower sound insulation performance in the high frequency range.

  On the other hand, as shown in FIG. 15, according to the partition wall in which the overlapped face material is further overlapped, problems such as a crack or twist of the coating film or the cloth can be avoided, and the sound insulation performance due to the sound insulation defect is obtained. There is no problem of degradation. However, in the partition wall with this structure, the laminated surface material is additionally laminated on the wall surface, so that the wall thickness increases, the effective floor area of each room decreases, the material cost and the construction cost increase, the field material Problems such as increase in construction time and extension of construction period.

  The present invention has been made in view of such a problem, and the object of the present invention is to reduce the sound insulation performance due to the sound insulation defect of the joint portion without requiring the lamination of the additional laminated face material. An object of the present invention is to provide a joint structure that can be prevented and a construction method thereof.

In order to achieve the above-described object, the present invention provides a see-through joint structure of a partition wall in which a wall surface is formed by a building surface material built vertically on a floor structure.
A belt-like joint bottom formed at a position where a joint joint is to be formed and forming a joint bottom in a gap continuous in the direction in which the joint joint extends, and each side of the gap connected to the joint bottom. An integral joint material comprising first and second legs seated on the indoor side surface or the indoor side surface of
A sealing material or a base material that is disposed behind the joint bottom portion at a distance from the joint bottom portion in the gap, and seals the gap from the space behind the gap; and
There is provided a see-through joint structure of a partition wall, characterized by having a concealed air layer formed between the back surface of the joint bottom part and the sealing material or the base material and extending in parallel to the joint bottom part.

The present invention also relates to a method for constructing a joint joint that forms a joint joint on a partition wall in which a wall surface is formed by a building surface material built vertically on a floor structure.
Sealing the bottom part of the gap formed in a position where the see-through joint is to be formed and continuing in the direction in which the see-through joint extends from the space behind the gap with a sealing material or a base material,
Using an integral joint material having a belt-shaped joint base part that forms a joint base extending in parallel with the sealant or the base material in the gap, and first and second legs connected to the joint base part, The joint bottom portion is inserted into the gap, and the first and second legs are seated on the indoor side surface or the indoor side surface on both sides of the gap, and a concealed air layer continuously extending in the direction is formed in the joint. Formed between the bottom and the sealing material or base material,
There is provided a method for constructing a see-through joint, wherein the first leg portion and the second leg portion are covered with an interior finishing material of the wall surface.

  According to the above configuration of the present invention, the joint material forms the joint bottom in the joint by the joint bottom portion, and forms a concealed air layer between the joint bottom portion and the sealing material or the base material. The interior finishing material of the wall surface extends from the surface of the leg portion into the joint. Even if cracking or twisting of the interior finishing material occurs in the joint due to deformation or displacement of the joint bottom, it is difficult to see from the indoor side, and there is no adverse effect on the architectural design. If desired, the interior finish material can be pre-divided in the joint.

  According to the sound insulation performance test of the present inventor, when a joint is formed at the joint between different structures of the high performance sound insulation wall (model A-2000 / WI) by the joint structure, the joint is formed through the joint. It was found that almost no sound insulation defect occurred. Therefore, according to the present invention, it is possible to form a see-through joint at the dissimilar structure joint without substantially causing a sound insulation defect. Further, as is clear from the results of such a sound insulation performance test, the joint structure of the present invention prevents the sound insulation defect of the joints formed between the partition walls and the flat joint wall formed on the partition wall. It works effectively even when doing it.

From another viewpoint, the present invention relates to a joint joint structure that forms joints on the indoor side surface or indoor side surface of a building.
A belt-like joint bottom part that forms a joint bottom in a gap that is formed in a position where the joint joint is to be formed and extends in the direction in which the joint joint extends, and each of the gaps connected to the joint bottom part. An integral joint material comprising an indoor side surface located on the side or first and second legs seated on the indoor side surface;
A sealing material or an airtight material that is disposed behind the joint bottom portion at a distance from the joint bottom portion in the gap, and seals or seals the gap from a space behind the gap;
There is provided a see-through joint structure of a partition wall, characterized by having a concealed air layer formed between a back surface of the joint bottom part and the sealing material or the airtight material and extending in parallel with the joint bottom part.

The present invention further relates to a method for constructing a see-through joint that forms a see-through joint on the indoor-side surface or indoor-side surface of a building.
Forming a gap continuous in the direction in which the through joint extends in a position where the through joint is to be formed;
Sealing the bottom portion of the gap from the space behind the gap with a sealing material or an airtight material;
Using an integral joint material having a belt-like joint base part that forms a joint base extending in parallel with the sealing material or the airtight material in the gap, and first and second legs connected to the joint base part, The joint bottom portion is inserted into the gap, and the first and second legs are seated on the indoor side surface or the indoor side surface on both sides of the gap, and a concealed air layer continuously extending in the direction is formed in the joint. Provided is a method for constructing a see-through joint, which is formed between a bottom portion and the sealing material or the airtight material.

  According to the said structure of this invention, while a joint material forms a joint bottom in a joint by a joint bottom part, a concealment air layer is formed between a joint bottom part and a sealing material or an airtight material. Even if cracks or twists of the interior finishing material extending into the joints are generated in the joints due to deformation or displacement of the joint bottoms, it is difficult to see from the indoor side, and there are no adverse effects on the architectural design. ADVANTAGE OF THE INVENTION According to this invention, a see-through joint can be formed in the indoor side surface or indoor side surface of a building, without producing sound insulation defect | deletion substantially.

  According to the present invention, it is possible to provide a see-through joint structure that can prevent a decrease in sound insulation performance due to a sound insulation defect in a joint part and a construction method thereof, without requiring additional lamination face materials. .

FIG. 1 is a partial perspective view showing a configuration of a partition wall having a see-through joint structure according to a preferred embodiment of the present invention. 2A is a longitudinal sectional view of the partition wall shown in FIG. 1, and FIG. 2B is a partial perspective view of a joint material. 3A is a partial cross-sectional view of the partition wall shown in FIG. 1, and FIG. 3B is a partial perspective view of the joint material. FIG. 4 is a partial perspective view showing a joint structure construction method, in which a step of applying an adhesive to the joint material is shown. FIG. 5 is a partial perspective view showing a method for constructing a joint structure, and shows a process of mounting joint material on the joint part. FIG. 6 is a partial perspective view showing a joint structure construction method, in which a joint material is mounted on the joint portion. FIG. 7 is a partial perspective view showing a method for constructing a joint structure, and shows a process for constructing an interior finishing material. FIG. 8 is a front view conceptually showing a state in which the partition wall test body according to the present invention is built in the structural enclosure for the sound insulation performance test. FIG. 9 is a performance diagram showing the test results of the sound insulation performance test of the partition wall according to the present invention. FIG. 10A is a partial cross-sectional view of a partition wall having a joint structure according to another embodiment of the present invention, and FIG. 10B is a partial perspective view of a joint material. 11A is a partial cross-sectional view of a partition wall having a joint structure according to a modification of the embodiment shown in FIG. 10A, and FIG. 11B is a partial perspective view of a joint material. is there. FIG. 12: is a longitudinal cross-sectional view which shows the conventional structure of the junction part of a high performance sound insulation wall (A-2000 * WI) and the structural frame of a building. FIG. 13: is a cross-sectional view which shows the conventional structure of the junction part of a high performance sound insulation wall (A-2000 * WI) and the structural frame of a building. 14 (A) and 14 (B) are a longitudinal sectional view and a transverse sectional view of a partition wall joint portion showing a conventional countermeasure concerning cracks or twists, etc., and an end portion of the partition wall shown in FIGS. 12 and 13 And the structure which formed the see-through joint at the upper end part is shown. 15 (A) and 15 (B) are a longitudinal sectional view and a transverse sectional view of a partition wall joint portion showing another conventional countermeasure regarding cracks or twists, etc., and by laminating additional laminated face materials. The structure which formed the see-through joint at the terminal part and upper end part of the partition wall is shown. FIG. 16 is a performance diagram showing the sound insulation performance of the partition wall shown in FIG.

  According to a preferred embodiment of the present invention, the building surface material is a gypsum board product, a gypsum board with glass fiber nonwoven fabric, a slag gypsum board, a fiber-containing gypsum board, an ALC board, a calcium silicate board, a plywood board, a cement board or It is an extrusion-molded plate, the sealing material is made of a highly viscous resin sealing material, and the joint material is an integrally molded product of resin or metal material.

  In a preferred embodiment of the present invention, the partition wall is continuous from the floor structure to the upper floor structure, the building surface material is vertically built between the floor structure and the upper floor structure, and the gap is , Formed at the junction between the partition wall and the structural frame of the building. The first leg is seated on the indoor side surface or the indoor side surface of the structural housing, and the second leg is seated on the face material surface of the building surface material. As the joint material, a joint material made of a synthetic resin integral molded product that can be flexibly deformed can be suitably used. The joint material that can be deformed flexibly absorbs the difference in the behavior of the partition wall and the structural frame caused at the time of an earthquake or the like by deformation or displacement of the joint bottom. It is also possible to absorb the external force by providing a deformation means such as an expansion / contraction mechanism at the joint bottom. When the joint material is not required to have such remarkable flexibility or deformability, a hard joint material made of a hard resin or a metal integrally molded product may be used as the joint material.

  In another preferred embodiment of the present invention, the gap is formed at the joint between the partition walls, the first leg is seated on the surface of the building material of the one partition wall, and the second leg Sits on the surface of the building surface of the other partition wall.

  Preferably, the first and second leg portions of the joint material are formed of a strip-like thin plate that extends in parallel with the joint portion and is in close contact with the wall surface, and the joint bottom portion, the first leg portion, and the second leg portion are formed on the joint portion. It is covered with an interior finishing material such as a continuous coating or cloth. The interior finishing material extends into the joint and extends throughout the joint floor. If desired, the interior finishing material may be divided or divided in advance at the joint bottom surface. Preferably, at least one of the first and second legs is bonded to the surface material surface of the building surface material. More preferably, both the first and second legs are respectively bonded to the face material surface on each side of the joint.

  According to a further preferred embodiment of the invention, the joint floor width is set in the range of 2 to 10 mm, and the thickness or depth (G) of the concealed air layer is in the range of 2 to 25 mm, preferably The thickness of the joint bottom and legs of the joint material is set within the range of 0.1 to 3.0 mm.

  Preferably, both ends of the concealing air layer are closed, and the concealing air layer is sealed with a joint material and a sealing material, or is sealed or sealed in an airtight state. More preferably, a different type of sealing material such as an inorganic sealing material or an organic sealing material is further filled on the back side of the sealing material.

  Suitably, the sealing material has a specific gravity within a range of 0.8 to 2.0, preferably within a range of 1.0 to 1.7, for example, a specific gravity of 1.3 to 1.5. The thickness of the sealing material is set in the range of 1 to 150 mm, preferably in the range of 1 to 50 mm, for example, in the range of 4 to 10 mm. The concealing air layer effectively exhibits a sound insulating effect due to the air layer sealing action and the mass of the sealing material.

  Hereinafter, a partition wall structure according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  1, FIG. 2 (A) and FIG. 3 (A) are a partial perspective view, a longitudinal sectional view, and a partial transverse sectional view showing a configuration of a partition wall having a joint structure according to a preferred embodiment of the present invention. 2B and 3B are partial perspective views of the joint material.

  As shown in FIG. 1, the partition wall 1 is a lightweight partition wall of a dry construction method constructed in a reinforced concrete structure building. The structural frame of the building is composed of floor structures F1, F2, columns C, beams B, and walls W having a reinforced concrete structure. The lower end part of the partition wall 1 is connected to the floor structure F1. The upper end part of the partition wall 1 is connected to the beam B or the floor structure F2. The end in the wall core direction of the partition wall 1, that is, the end portion is connected to the column C or the wall body W.

  The exposed surfaces of the beam B, the column C, and the wall W, that is, the lower end surface Ba of the beam B, the side surface Bd of the beam B, the vertical surface Ca of the column C, and the wall surface Wa of the wall W are plastering materials such as cement mortar. Plastering is finished with Bc, Cc (FIG. 3) and Wc (FIG. 3), and an interior base surface such as a paint base or cloth base made of a plaster finish is formed.

  In this example, the lower end portion of the partition wall 1 is supported by the floor structure F1 on the floor that constructs the partition wall 1, and the upper end portion of the partition wall 1 is fixed to the beam B on the upper floor. The end portion is joined to the column C. The upper end portion of the partition wall 1 may be fixed to the lower surface of a concrete floor slab or the like constituting the upper floor structure F2, and the end portion of the partition wall 1 may be joined to the wall body W. .

  The joint material 20 constituting the joint structure is continuously attached to the upper end portion and the terminal end portion of the partition wall 1. As shown in FIGS. 2 (A) and 3 (A), the surface of the upper facing member 6 of the partition wall 1 is covered with an interior finishing material 10 by interior finishing work such as painting or cloth pasting. The interior finishing material 10 is also applied to the interior side surface of the joint material 20, the lower end surface Ba of the beam B, the side surface Bd of the beam B, the vertical surface Ca of the column C, and the wall surface Wa of the wall body W. Therefore, the interior finishing material 10 extends over the entire surface of the upholstery surface material 6, the column C, the wall body W, the beam B, and the joint material 20 and is continuous. In addition, the lower end surface Ba of the beam B, the side surface Bd of the beam B, the vertical surface Ca of the column C, and the wall surface Wa of the wall body W constitute an indoor side surface or an indoor side surface of the building.

  2A and 3A, the partition wall 1 includes a lower runner 2 fixed on a floor structure F1 such as a floor slab, and an upper runner 3 fixed on a lower surface Ba of the beam B. And a large number of studs 4 that are vertically built between the upper and lower runners 2 and 3. The studs 4 are made of lightweight steel studs and are arranged in a staggered arrangement along the wall core. The inter-column 7 disposed at the end of the partition wall 1 is erected vertically between the upper and lower runners 2 and 3 in a state of being close to or in contact with the vertical plane Ca.

  The underlaying surface material 5 is fixed to the studs 4 with screws, and the upholstery surface material 6 is fixed to the outer surface of the underlaying surface material 5 with staples and an adhesive. A substantially sealed concealing space is formed as a hollow layer (hollow part) between the lower surface members 5 on both sides of the wall. A heat insulating and sound absorbing material 15 (shown by a broken line) is disposed in the hollow layer. The heat insulating / sound absorbing material 15 is inserted between the studs 4 as shown in FIG.

As members constituting the partition wall 1, for example, the following building materials are used.
・ Lower runner 2: Lightweight shape steel (steel runner) C-75mm x 40mm x 0.8mm
Upper runner 3: Lightweight shape steel (steel runner) C-75mm x 40mm x 0.8mm
・ Spacer 4: Lightweight steel (steel stud) C-65mm × 45mm × 0.8mm
・ Spacer 7: Lightweight steel (steel stud) C-75mm × 45mm × 0.8mm
・ Under surface material 5: Reinforced gypsum board ・ Thickness 21 mm (Yoshino Gypsum Co., Ltd. product “Tiger Board (registered trademark) type Z”)
・ Upholstery surface material 6: Hard plaster board ・ Thickness 9.5 mm (Yoshino Gypsum Co., Ltd. product “Tiger Super Hard (registered trademark)”)
・ Insulation and sound absorbing material 15: Glass wool density 24kg / m ³・ Thickness 50mm

  As shown in FIG. 2A, the upper end portion of the partition wall 1 is abutted against the lower end surface Ba of the beam B. The upper runner 3 disposed at the upper end portion of the partition wall 1 is fixed to the lower end surface Ba by a fixture (not shown) such as an anchor. Further, when the upper end portion of the partition wall 1 is abutted against the lower surface of the floor structure F2, substantially the same joining structure is employed.

  As shown in FIG. 3A, the end portion of the partition wall 1 is abutted against the vertical surface Ca of the column C of the reinforced concrete structure constituting the structural frame of the building. Note that, as described with reference numerals in parentheses in FIG. 3, the same joining structure is also adopted when the end portion of the partition wall 1 is abutted against the wall surface Wa of the wall body W.

  As shown in the partially enlarged views of FIGS. 2 (A) and 3 (A), the edge portion of the lower surface material 5 is separated from the lower end surface Ba and the vertical surface Ca by a predetermined distance (width) S1, and the upper surface material. The edge 6 is separated from the lower end surface Ba and the vertical surface Ca by a predetermined distance (width) S2. Between the edge of the lower surface material 5 and the lower end surface Ba and the vertical surface Ca, the lower surface sealing material 8 is inserted or injected, and the lower surface sealing material 9 is further inserted or injected onto the lower surface sealing material 8. In this example, an inorganic sealing material such as rock wool felt (for example, trade name “Tiger Rock Felt (registered trademark)” (product of Yoshino Gypsum Co., Ltd.)) is used as the underlay sealing material 8. A urethane resin sealant (for example, trade name “Tiger U Tight” (product of Yoshino Gypsum Co., Ltd.)) is used. The lower sealing material 9 is filled to such an extent that it slightly touches the upper surface material 6, and the surface of the lower surface sealing material 9 is positioned at a position near the joint surface between the upper surface material 6 and the lower surface material 5. In this example, the thickness D of the lower sealing material 9 is about 6 mm, and the specific gravity of the lower sealing material 9 is 1.3 to 1.5.

  The joint material 20 is disposed in the joint portion so as to bridge the lower end surface Ba and the vertical surface Ca and the edge surface 6 a of the upholstery surface material 6. As shown in FIGS. 2B and 3B, the joint material 20 includes a belt-like joint bottom portion 21 and leg portions 22 and 23. The joint bottom portion 21 includes an intermediate connecting portion 24. The leg portion 22 is connected to the joint bottom portion 21, and the leg portion 23 is connected to the intermediate connection portion 24 of the joint bottom portion 21. The leg portion 22 is made of a thin plate material parallel to the lower end surface Ba or the vertical surface Ca, and the leg portion 23 is made of a thin plate parallel to the surface of the upper face material 6. The leg portions 22 and 23 extend outward from the joint bottom portion 21 in directions orthogonal to each other. The plate | board thickness of the joint bottom part 21 and the leg parts 22 and 23 is set in the range of 0.1-3.0 mm, Preferably, it exists in the range of 0.3-1.5 mm. In the joint material 20 of this example, the plate thickness of the joint bottom part 21 and the leg parts 22 and 23 is about 0.5 mm. The leg portions 22 and 23 are seated on the lower end surface Ba, the vertical surface Ca, and the edge surface 6a, and are bonded as described later. When the lower end surface Ba or the vertical surface Ca and the partition wall 1 are joined to each other with an acute angle or an obtuse angle, the legs 22 and 23 also form a tilt angle corresponding to such a tilt angle. Oriented.

  The joint material 20 is an integrally molded product of a thermoplastic resin such as a soft vinyl chloride resin or a hard vinyl chloride resin, and absorbs the relative displacement of the leg portions 22 and 23 due to the deformation or displacement of the joint bottom portion 21. Therefore, the relative deformation or displacement caused by the difference in behavior between the structural frame (beam B, column C) and the partition wall 1 is absorbed by the deformation or displacement of the joint base 21.

  The joint bottom portion 21 is spaced from the lower seal material 9, and an air layer 30 is formed between the joint bottom portion 21 and the lower seal material 9. The air layer 30 is a concealed space having a width S2 that is closed by the joint material 20 of the partition wall 1, the lower sealing material 9 and the upper surface material 6, and the lower end surface Ba or the vertical surface Ca. Preferably, the leg portion 22 is hermetically bonded to the lower end surface Ba or the vertical surface Ca, and the leg portion 23 is hermetically bonded to the edge surface 6 a of the upper facing member 6. Note that the thickness G of the air layer 30 can be preferably set within a range of 2 to 25 mm (in this example, within a range of about 3 to 5 mm).

  4, 5, 6 and 7 are partial perspective views showing the joint structure construction method step by step.

  FIG. 4 shows a state in which the underlay surface material 5, the upholstery surface material 6, and the underlay seal materials 8 and 9 are applied as described above. Adhesives 41 and 42 are applied to the back surfaces of the leg portions 22 and 23 of the joint material 20. Next, the leg portions 22 and 23 of the joint material 20 are bonded to the vertical surface Ca (or the lower end surface Ba) and the edge surface 6a of the upper surface material 6 by the adhesives 41 and 42 as shown in FIG. The As a result, as shown in FIG. 6, an air layer 30 is formed between the joint bottom 21 and the underlay sealing material 9. As a modification, adhesive materials 41 ′ and 42 ′ (shown by broken lines in FIG. 4) such as double-sided adhesive tape are applied in a band shape to the vertical surface Ca (or the lower end surface Ba) and the edge surface 6 a of the upper surface material 6. Then, the leg portions 22 and 23 of the joint material 20 may be bonded to the vertical surface Ca (or the lower end surface Ba) and the edge surface 6a by the strip-shaped adhesive materials 41 ′ and 42 ′.

  On the step portion 22a between the edge portion of the leg portion 22 and the vertical surface Ca (or the lower end surface Ba), the step portion 23a between the edge portion of the leg portion 23 and the edge surface 6a, and further on the surface of the joint material 20 Then, a base treatment such as putty treatment is applied to finish the interior such as painting or cloth application, and then, as shown in FIG. 7, the interior finish material 10 is made of joint material 20, upper facing material 6 and vertical surface Ca ( Or it is constructed on the surface of the lower end face Ba).

The inventor conducted a sound insulation performance test on the wall surface specimen having such a joint structure. FIG. 8 is a front view showing a state in which the test body of the partition wall 1 is built in the structural enclosure for the sound insulation performance test, and FIG. 9 is a performance diagram showing the test results of the sound insulation performance test. In addition, in FIG. 9, each reference curve of sound insulation performance TL _D- 40, 45, 50, 55, 60 is shown with the broken line.

  In the sound insulation performance test, the test body of the partition wall 1 was built in the square opening of the frame E of the reinforced concrete structure as shown in FIG. The partition wall 1 has the structure shown in FIGS. 2 and 3, and the upper end portion α and the terminal end portion β are joined to the housing E through the see-through joint using the joint material 20. Further, the lower end portion δ and the end portion γ of the partition wall 1 are provided with the lower sealing materials 8 and 9 and the upper sealing material 11 as in the conventional high performance sound insulating wall (A-2000 · WI) shown in FIGS. 12 and 13. It joined to the housing E through the joint structure (FIG. 12 and FIG. 13) completely filled or inserted to the state of the surface of the upholstery face material 6.

As shown in the performance diagram of FIG. 9, the sound insulation performance of the partition wall 1 shows the same characteristics as the conventional high performance sound insulation wall (A-2000 · WI), and the sound insulation performance in the high frequency region does not deteriorate. observed, therefore, the partition wall 1, sound insulation _performance: it has been confirmed to exhibit the TL D -55. This is because if the sound insulation performance of additional overlapping clad surface material conventional partition wall forming the eye watermarks joints without lamination (FIG. 14) (FIG. 16) is compared with that was TL D _-51 The sound insulation performance is far superior.

The present inventor also formed the above-described see-through joint using the joint material 20 not only at the upper end portion α and the terminal end portion β but also at the terminal end portion γ, and conducted a similar sound insulation performance test. This result, sound insulation performance of the partition wall 1 is slightly reduced, but was TL D _-54, the sound insulation performance formed the eye watermarks joints without lamination of additional overlapping clad surface material compared with the sound insulation performance of conventional partition wall (Fig. 14) _(TL D -51), a very good sound insulation performance.

The inventor further deforms the joint structure of the partition wall 1, omits the application of the adhesive 41 on one side, and bonds the joint material 20 to the upper surface material 6 only by applying the adhesive 42 on the other side. The test body of the partition wall 1 having a structure was built in the rectangular opening of the housing E in the same manner as the above test, and the sound insulation performance test was performed. As a result, sound insulation performance of the partition wall 1 is slightly reduced, but was TL D _-54, which also additional without lamination lap clad surface material eyes watermarks prior to forming the joint compared with partition walls sound insulation performance (FIG. 14) _(TL D -51), a very good sound insulation performance.

  FIG. 10A is a partial cross-sectional view of a partition wall having a joint structure according to another embodiment of the present invention, and FIG. 10B is a partial perspective view of a joint material. In FIG. 10, components that are substantially the same as or equivalent to the components of the above-described embodiment are denoted by the same reference numerals.

  The above-described embodiment relates to a joint structure disposed at the joint between the partition wall 1 and the structural frame of the building (column C, beam B, wall W). The present invention relates to a joint structure arranged at a 1 'joint.

  The partition walls 1, 1 ′ are light-weight partition walls of a dry construction method having substantially the same structure, and are arranged in an orthogonal direction, intersecting and joining in a T shape. The partition walls 1, 1 ′ are each a large number of studs 4 erected vertically between upper and lower runners (not shown), an underlaying surface material 5 fixed to the studs 4 by screws, staples and adhesives The upper surface member 6 is fixed to the outer surface of the lower surface member 5. The studs 4 are made of lightweight steel studs and are arranged in a staggered arrangement along the wall core. The column 7 arranged at the terminal end of the partition wall 1 is erected vertically between upper and lower runners (not shown) in a state of being close to or in contact with the upper surface member 6 of the partition wall 1 ′. In the hollow layer (hollow part) formed between the underlaying surface materials 5, a heat insulating / sound absorbing material 15 (shown by a broken line) is disposed.

  The structure of the joint structure constructed at the joint between the partition walls 1, 1 ′ is shown in the partially enlarged view of FIG. The edge of the underlaying surface material 5 of the partition wall 1 is separated from the upper surface material 6 of the partitioning wall 1 ′ by a predetermined distance S 1, and the underlay sealing materials 8 and 9 are separated by gaps (see FIG. 10A). Inserted or injected into the width S1). The edge of the upper facing member 6 of the partition wall 1 is separated from the upper covering member 6 of the partition wall 1 'by a predetermined distance S2. A joint bottom portion 21 of the joint material 20 is inserted into a gap (width S2) formed between the separated upper face members 6. The leg portions 22 and 23 of the joint material 20 are seated on the surface of the upholstery surface material 6, and at least one of the leg portions 22 and 23 is bonded to the upholstery surface material 6. The leg portions 22 and 23 are preferably adhered to the upper facing member 6 in an airtight manner. The surface of the joint material 20 is subjected to a base treatment such as putty treatment for finishing the interior such as painting or pasting, and then the interior finishing material 10 is applied to the surfaces of the joint material 20 and the upper surface material 6. The

  The joint bottom portion 21 is spaced from the underlay sealing material 9, and an air layer 30 is formed between the joint bottom portion 21 and the underlay sealing material 9. The air layer 30 is a concealed space having a width S <b> 2 closed by the joint material 20, the lower sealing material 9, and the upper surface material 6 of the partition wall 1. As in the previous embodiment, the thickness D of the underlay sealing material 9 of this example is about 6 mm, and the specific gravity of the underlay sealing material 9 of this example is 1.3 to 1.5. The thickness G of the air layer 30 can be preferably set within a range of 2 to 25 mm (in this example, within a range of about 3 to 5 mm).

  FIG. 11 is a partial cross-sectional view of a partition wall having a joint structure according to a modification of the embodiment shown in FIG. 10A, and FIG. 11B is a partial perspective view of the joint material.

  In the joint structure shown in FIG. 11, the lower surface member 5 of the partition wall 1 is abutted against the upper surface member 6 of the partition wall 1 ′. The edge of the upper facing member 6 of the partition wall 1 is separated from the surface of the upper member 6 of the partition wall 1 'by a predetermined distance S2. In the gap formed between the separated upper face materials 6, the upper seal material 11 is applied on the lower face material 5, or is relatively thinly filled, and the joint of the joint material 20. The bottom 21 is inserted into the gap. Since the airtight material layer of the upper sealing material 11 is formed relatively thinly on the surface of the lower surface material 5 at a distance from the joint bottom 21, the space behind the upper surface material 6 and the lower surface material 5 is reduced. A sealed air layer 30 is formed between the joint bottom 21 and the upper sealing material 11. The air layer 30 is a concealed space having a width S <b> 2 closed by the joint material 20, the upper sealing material 11, and the upper surface material 6 of the partition wall 1. In addition, the thickness D of the upper seal material 11 of this example is about 1 to 3 mm, and the thickness G of the air layer 30 of this example is about 2 to 3 mm.

  According to the joint structure shown in FIGS. 10 and 11, the gap of the width S2 is formed between the upper face materials 6 at the positions where the joints to be formed are formed, and the joint bottom portion 21 of the joint material 20 is formed on the wall surface. The sealing materials 9 and 11 are inserted in the gap and are formed in the gap to form the air layer 30 behind the joint bottom 21. The sealing materials 9 and 11 continuously extend in parallel to the joint bottom 21, and the air layer 30 continuously extends between the joint bottom 21 and the sealing materials 9 and 11.

  Such a joint structure is preferably used not only as an intersection or joint of the partition walls 1 and 1 ', but also as a joint structure of the see-through joint formed on the flat continuous wall surface of the partition walls 1 and 1'. Can do. As shown in FIG. 10, the lower surface material 5 and the upper surface material 6 of the partition walls 1, 1 ′ are completely separated by gaps (widths S 1, S 2), and behind the air layer 30 by the lower surface sealing materials 8, 9. The joint structure to be hermetically treated can be preferably used in a partition wall using a steel stud. On the other hand, as shown in FIG. 11A, a structure in which the underlaying surface material 5 is continued behind the joint material 20 can be preferably used in a partition wall or the like of a non-stud structure or a studless structure.

  When the wall surfaces of the partition walls 1 and 1 ′ where the interior finishing material 10 is to be constructed continue to the upper floor beam B or the floor structure F2 (FIG. 1), the see-through joint structure shown in FIGS. It is desirable to continue to the see-through joint structure (FIG. 2) that extends horizontally at the upper ends of the partition walls 1, 1 ′. If desired, the see-through joint structure shown in FIGS. 10 and 11 is applied only to an appropriate height range, and the conventional joint structure (sealing material filling) shown in FIG. 13 is applied to other height ranges. Is also possible.

  When a ceiling finishing material (not shown) is abutted against the wall surfaces of the partition walls 1 and 1 'or joined through a ceiling edge or joints, the see-through joints shown in FIGS. The structure may be constructed within the range from the floor surface to the height position of the ceiling finishing material. In such a case, a conventional joint structure (sealing material filling) shown in FIG. 13 can be employed as the joint structure of the ceiling back portion that is visually hidden from the room.

  In this way, when the see-through joint structure is terminated at a specific position, it is desirable that the end portion of the air layer 30 is airtightly treated with a sealing material or the like. However, when it is considered that the opening or closing of the end portion of the air layer 30 does not significantly affect the sound insulation performance of the joint structure, the end portion of the air layer 30 may be opened at the end portion of the see-through joint structure. .

  The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the above-described embodiments, and various modifications or changes can be made within the scope of the present invention described in the claims. It goes without saying that it is possible.

  For example, in the above embodiment, the leg portions on both sides are bonded to the face material or the housing surface, but the bonding of one leg portion may be omitted if desired.

  In addition to the aforementioned adhesives and double-sided adhesive tapes, adhesives or adhesive materials include sealing materials, joint treatment materials (putty materials, etc.), base treatment materials (putty materials, primers, etc.), plastering materials (cement mortar, resin) Mortar or the like) or a combination of these adhesives or adhesive materials.

  Furthermore, as the partition wall material, gypsum board products such as structural gypsum board, sizing gypsum board and decorative gypsum board, gypsum board with non-woven fiberglass (trade name “Tiger Glass Rock (registered trademark)” (Yoshino Gypsum Co., Ltd.) Company products)), slag gypsum board (trade name “ASUNON” (registered trademark), etc.), cement board (“DERACLEAT” (registered trademark), etc.), fiber-mixed gypsum board (trade name “FG board”, etc.), extrusion molding A board (trade name “Clion Studless Panel”, “SLP Panel”, etc.), ALC board, calcium silicate board, wood-based plywood, ceramic siding, etc. may be used as the face material.

  Further, the size, shape and material of the joint material can be arbitrarily changed according to the present invention. For example, the joint material in a form having a large number of holes or openings in the leg portion or a general hat-shaped joint material. Etc. can also be used according to the invention.

  Furthermore, the joint structure of the present invention may be applied not only to a lightweight partition wall having a shaft structure having steel studs (intercolumns) but also to a partition wall having a non-stud structure or a studless structure. Further, the present invention is applied to the joint between the upper end of the wall and the upper floor of the upper floor slab or roof slab or the lower surface of the roof structure, the joint between the wall and the ceiling, or the ceiling surface. The joint structure or joint construction method may be applied.

  The see-through joint structure and its construction method of the present invention include a high-performance sound insulation wall constituting a dry partition wall such as a door boundary wall, a boundary wall or a fireproof partition wall, and a structural frame of a building (column, wall, beam, floor). Joint structure of heterogeneous structure joints joining slabs, etc., high-performance sound insulation walls extending in directions intersecting or orthogonal to each other, or anisotropic joints joining high-performance sound insulation walls and partition walls, and its construction It can be suitably used as a method. Moreover, you may apply the joint structure of this invention, and its construction method to the joint etc. which are provided in the continuous wall surface of a high performance sound insulation wall. According to the present invention, it is possible not only to avoid problems such as cracking or twisting of the interior finishing material, but also because it does not require the lamination of additional laminated face materials, the increase in wall thickness, the effective floor area of each chamber Form a see-through joint on the partition wall without causing deterioration in sound insulation performance due to sound insulation deficiency, while avoiding problems such as reduction, material cost and construction cost increase, on-site material increase, construction period long term, etc. be able to. Therefore, the practical effect of the present invention is remarkable.

1, 1 'partition wall 2 lower runner 3 upper runner 4 pillar 5 lower face material 6 upper face material 6a edge surface 7 end face pillar 8, 9 lower seal material 10 interior finishing material 11 upper seal material 15 heat insulation and sound absorption Material 20 Joint material 21 Joint bottom 22 Leg (first leg)
23 legs (second leg)
24 Middle connection part of joint bottom 30 Air layer (Hidden air layer)
41 Adhesive 42 Adhesive B Beam Ba Lower end surface C Column Ca Vertical surface D Thickness of underlay sealing material G Thickness of air layer W Wall body Wall surface J Watermark joint F1 Floor structure F2 Floor structure S1 Predetermined distance ( width)
S2 Predetermined distance (width)

Claims (22)

In the see-through joint structure of the partition wall that forms the wall surface by the building surface material built vertically on the floor structure,
A belt-like joint bottom formed at a position where a joint joint is to be formed and forming a joint bottom in a gap continuous in the direction in which the joint joint extends, and each side of the gap connected to the joint bottom. An integral joint material comprising first and second legs seated on the indoor side surface or the indoor side surface of
A sealing material or a base material that is disposed behind the joint bottom portion at a distance from the joint bottom portion in the gap, and seals the gap from the space behind the gap; and
A see-through joint structure of a partition wall, comprising a concealed air layer formed between a back surface of the joint bottom part and the sealant or base material and extending in parallel with the joint bottom part.   The partition wall is continuous from the floor structure to the upper floor structure, the building surface material is vertically built between the floor structure and the upper floor structure, and the gap is separated from the partition wall. The first leg is seated on the indoor side surface or the indoor side surface of the structural frame, and the second leg is a surface of the building surface material. The see-through joint structure according to claim 1, wherein the see-through joint structure is seated on a material surface.   The gap is formed at a joint between the partition walls, the first leg is seated on the surface of the building surface of the one partition wall, and the second leg is the other partition wall. The see-through joint structure according to claim 1, wherein the structure is seated on a surface of the building material.   The said 1st and 2nd leg part consists of a strip | belt-shaped thin plate extended in parallel with the said clearance gap, and closely_contact | adhered to the said indoor side surface or indoor side surface. See-through joint structure.   The see-through joint structure according to any one of claims 1 to 4, wherein at least one of the first and second leg portions is bonded to the indoor-side surface or the indoor-side surface.   The said joint bottom part, the 1st leg part, and the 2nd leg part are coat | covered with the interior finishing material continuously extended from the said indoor side surface or indoor side surface to the surface of the said joint material. The through-joint structure of any one of 5 thru | or 5.   The width of the joint base is set in a range of 2 to 10 mm, the thickness or depth (G) of the air layer is set in a range of 2 to 25 mm, and the joint base and leg portions of the joint material are set. The see-through joint structure according to any one of claims 1 to 6, wherein the thickness is set in a range of 0.1 to 3.0 mm.   The both ends of the air layer are closed, and the air layer is hermetically sealed or sealed by the joint material and the sealing material. The see-through joint structure described in 1. In the construction method of the see-through joint that forms the see-through joint on the partition wall formed with the wall surface by the building surface material built vertically on the floor structure,
Sealing the bottom part of the gap formed in a position where the see-through joint is to be formed and continuing in the direction in which the see-through joint extends from the space behind the gap with a sealing material or a base material,
Using an integral joint material having a belt-shaped joint base part that forms a joint base extending in parallel with the sealant or the base material in the gap, and first and second legs connected to the joint base part, The joint bottom portion is inserted into the gap, and the first and second legs are seated on the indoor side surface or the indoor side surface on both sides of the gap, and a concealed air layer continuously extending in the direction is formed in the joint. Formed between the bottom and the sealing material or base material,
A method for constructing a see-through joint, wherein the first leg portion and the second leg portion are covered with an interior finishing material of the wall surface.   The construction method according to claim 9, wherein at least one of the first and second leg portions is in close contact with or adhered to the indoor side surface or the indoor side surface.   The partition wall is continuous from the floor structure to the upper floor structure, and the building surface material is vertically built between the floor structure and the upper floor structure or the roof structure, and the gap is The first leg is seated on the indoor side surface or the indoor side surface of the structural frame, and the second leg is formed on the building. The construction method according to claim 9 or 10, wherein the construction method comprises sitting on a surface of the face material.   The gap is formed at a junction between the partition walls, the first leg is seated on the indoor side surface or the indoor side surface of one partition wall, and the second leg is a part of the other partition wall. The construction method according to claim 9 or 10, wherein the construction method comprises sitting on an inner surface or an indoor surface.   The construction according to any one of claims 9 to 12, wherein both ends of the air layer are closed and the air layer is sealed or sealed in an airtight state by the joint material and the sealing material. Method.   The building surface material is a gypsum board product, a glass fiber non-woven gypsum board, a slag gypsum board, a fiber-mixed gypsum board, an ALC board, a calcium silicate board, a plywood board, a cement board or an extruded board, and the sealing material is The construction method according to any one of claims 9 to 13, wherein the construction material is made of a highly viscous resin sealing material, and the joint material is made of a resin or metal integrally molded product. In the see-through joint structure that forms a see-through joint on the indoor side surface or indoor side surface of the building,
A belt-like joint bottom part that forms a joint bottom in a gap that is formed in a position where the joint joint is to be formed and extends in the direction in which the joint joint extends, and each of the gaps connected to the joint bottom part. An integral joint material comprising an indoor side surface located on the side or first and second legs seated on the indoor side surface;
A sealing material or an airtight material that is disposed behind the joint bottom portion at a distance from the joint bottom portion in the gap, and seals or seals the gap from a space behind the gap;
A see-through joint structure of a partition wall, comprising a concealed air layer formed between a back surface of the joint bottom part and the sealing material or the airtight material and extending in parallel with the joint bottom part.   16. The see-through according to claim 15, wherein the first and second leg portions are formed of strip-like thin plates that extend in parallel with the gap and are in close contact with or adhered to the indoor side surface or the indoor side surface. Joint structure.   The said 1st leg part and the 2nd leg part are coat | covered with the interior finishing material continuously extended from the said indoor side surface or indoor side surface to the surface of the said joint material, It is characterized by the above-mentioned. The see-through joint structure.   The both ends of the air layer are closed, and the air layer is sealed or sealed in an airtight state by the joint material and the airtight material. The see-through joint structure described in 1. In the construction method of the see-through joint that forms the see-through joint on the indoor side surface or indoor side surface of the building,
Forming a gap continuous in the direction in which the through joint extends in a position where the through joint is to be formed;
Sealing the bottom portion of the gap from the space behind the gap with a sealing material or an airtight material;
Using an integral joint material having a belt-like joint base part that forms a joint base extending in parallel with the sealing material or the airtight material in the gap, and first and second legs connected to the joint base part, The joint bottom portion is inserted into the gap, and the first and second legs are seated on the indoor side surface or the indoor side surface on both sides of the gap, and a concealed air layer continuously extending in the direction is formed in the joint. A method for constructing a see-through joint, which is formed between a bottom and the sealing material or the airtight material.   The construction method according to claim 19, wherein the first leg portion and the second leg portion are covered with an interior finishing material continuously extending from the indoor side surface or the indoor side surface to the surface of the joint material.   The construction method according to claim 19 or 20, wherein at least one of the first and second legs is brought into close contact with or adhered to the indoor side surface or the indoor side surface.   The construction according to any one of claims 19 to 21, wherein both ends of the air layer are closed and the air layer is sealed or sealed in an airtight state by the joint material and the airtight material. Method.

Images