JP6783508B2 - Outer wall structure - Google Patents

Description

The present invention relates to an outer wall structure of a multi-storey building.

On the outer wall of a steel-framed building represented by a store or a nursing facility, a plurality of furring strips are used as a base for an outer wall material such as siding. Generally, the furring strips are fixed one by one at the site. In order to save labor in such work, a furring strip panel having a furring strip as a panel has been conventionally proposed.

When a furring strip panel is used, the furring strip panel is fixed so as to be attached to a beam of a building, as shown in Japanese Patent Application Laid-Open No. 2000-144918 (Patent Document 1) and the like. In this case, the height dimension of the furring strip panel corresponds to the height of the first floor of the building.

On the other hand, as shown in Japanese Patent Application Laid-Open No. 2014-66037 (Patent Document 2), an outer wall structure in which a panel frame having a height of two floors is attached to a pillar has also been proposed. In this outer wall structure, the panel frame is fixed in a state of being fitted between adjacent columns.

Japanese Unexamined Patent Publication No. 2000-144918 Japanese Unexamined Patent Publication No. 2014-66037

As mentioned above, the furring strip panel is often attached to the beam. However, the beams may be of various sizes, even on the same floor, due to structural factors. In such a case, the fit of the furring strip panel must be changed for each beam size.

In the outer wall structure of Patent Document 2, a furring strip panel having a height of two floors is attached to a column, and the furring strip panel does not fit the beam. However, since the furring strip panel is fitted between the columns, it is necessary to retract the beam position by the thickness of the furring strip panel. Therefore, the furring strip panel of Patent Document 2 cannot be attached to the skeleton portion in which the beam and the column are installed so that the cores are aligned with each other.

Further, in Patent Document 2, since the furring strip panel and the pillar are engaged so that their front surfaces (outdoor side surfaces) are located on the same plane with each other, the outer wall surface material is in contact with the front surface of the pillar. It is fixed. Therefore, according to the outer wall structure of Patent Document 2, the pillars of the building cannot be made into a fireproof structure.

The present invention has been made to solve the above problems, and an object of the present invention is to make the fitting of the furring strip panel uniform for each floor and to make the pillars of the building a fireproof structure. It is to provide a possible outer wall structure.

The exterior wall structure according to an aspect of the present invention is an exterior wall structure of a multi-story building including upper and lower floors adjacent to each other, and includes a plurality of columns, beams, and a plurality of furring strip panels. The plurality of pillars are arranged at a constant pitch along the outer periphery of the building. The beams are arranged intersecting the columns. The basic width dimension of the furring strip panel is the same as the pitch of the columns. Further, the plurality of furring strip panels are fixed to the pillars in a state of being taken out to the outside of the pillars and beams.

Preferably, each furring strip panel is fixed to both the pillars located on the upper floors and the pillars located on the lower floors and vertically across the beams located between the upper and lower floors. It is postponed.

Each furring strip includes, at least, a pair of vertical frames extending vertically on both sides. In this case, the outer wall structure is arranged at intervals along the vertical direction, and further includes a connecting member for connecting the column and the vertical frame of the furring strip panel.

Preferably, the outer wall structure further comprises a refractory coating that wraps around the columns.

Preferably, the connecting member includes an engaged member fixed to the outdoor surface of the column and an engaging member fixed to the indoor surface of the vertical frame of the furring strip panel and engaged with the engaged member.

The outer wall structure includes an outer wall material that is fixed to the furring strip panel and exposed to the outside. The outer wall structure may be further provided with a plate-shaped fireproof base material which is provided between the furring strip panel and the outer wall surface material and covers the outdoor surface of the furring strip panel.

Further, the outer wall structure may further include a refractory material arranged so as to straddle the vertical joints between the furring strip panels.

According to the present invention, the furring strip panel is attached to the pillar in a state of being taken out to the outside of the pillar and the beam. Therefore, the fit of the furring strip panel can be unified for each floor. In addition, the pillars of the building can be made into a fireproof structure.

It is a front view which shows a part of the outer wall structure which concerns on embodiment of this invention typically. It is sectional drawing which shows typically the outer wall structure which concerns on embodiment of this invention. In the embodiment of the present invention, it is a cross-sectional view schematically showing the positional relationship between the furring strip panel and the columns and beams. In the embodiment of the present invention, it is a vertical cross-sectional view schematically showing the structure of the connecting portion between the furring strip panel and the pillar. It is a partial cross-sectional view along the VV line of FIG. 4, and is the figure which shows typically the structure of the connection part of the furring strip panel and a pillar in embodiment of this invention. It is a perspective view which shows the structural example of the connecting member in embodiment of this invention. FIG. 5 is a cross-sectional view schematically showing an outer wall structure when a pillar is a fireproof structure in the embodiment of the present invention. FIG. 5 is a cross-sectional view showing a structural example of an outer wall joint portion in the case where the allocation core of the outer wall material coincides with the core of the column in the embodiment of the present invention. FIG. 5 is a cross-sectional view showing a structural example of an outer wall joint portion in the case where the allocation core of the outer wall material is located at the center of the furring strip panel in the embodiment of the present invention. FIG. 5 is a cross-sectional view showing a structural example of a panel joint portion in the case where the outer wall surface material straddles the vertical joint of the furring strip in the embodiment of the present invention. It is a front view which shows the other structural example of the furring strip panel. It is sectional drawing which shows the outer wall structure of the comparative example.

Embodiments of the present invention will be described in detail with reference to the drawings. The same or corresponding parts in the drawings are designated by the same reference numerals, and the description thereof will not be repeated.

The outer wall structure of the building according to the present embodiment includes a plurality of furring strip panels as a base for attaching the outer wall material. In the present embodiment, the building is, for example, a three-story steel-framed building.

(About the outline)
First, the outline of the outer wall structure according to the present embodiment will be described with reference to FIGS. 1 to 3.

The outer wall structure 1 of a three-story building includes a plurality of pillars 2, a plurality of beams 3, a plurality of furring strip panels 4, and an outer wall surface material 6. The plurality of pillars 2 are arranged at a constant pitch (P) along the outer peripheral portion of the building. The beam 3 is arranged so as to intersect (orthogonally) the column 2. As shown in FIG. 3, the columns 2 and the beams 3 are typically arranged so that their cores coincide with each other.

The plurality of furring strip panels 4 are arranged adjacent to each other along the outer peripheral portion of the building in the lateral direction of the building (the direction indicated by the arrow A1 in FIG. 3). The furring strip panel 4 is a mounting base for the outer wall surface material 6 exposed to the outside. The furring strip panel 4 has a rectangular shape when viewed from the front and has a predetermined thickness.

The outer wall surface material 6 is fixed to the outdoor surface (outdoor side surface) 4a side of the furring strip panel 4. It is assumed that the outer wall surface material 6 of the present embodiment is a ceramic siding. In that case, it is desirable that a plate-shaped fireproof base material 5 is provided between the furring strip panel 4 and the outer wall surface material 6. The refractory base material 5 is, for example, an iron plate.

As shown in FIG. 2, the basic width dimension L2 of each furring strip panel 4 is the same as the pitch (P) of the pillar 2. In other words, the plurality of columns 2 are installed so that their pitches are equal to the basic width dimension L2 of the furring strip panel 4. The arrow A1 in FIG. 3 indicates the width direction (horizontal direction) of the furring strip panel 4.

The basic width dimension L2 of the furring strip panel 4 and the pitch (P) of the pillar 2 are, for example, 2000 mm. The basic width dimension L2 is the module width that is the basis for allocating the furring strip panel 4. Therefore, the actual width of the furring strip panel 4 may be slightly smaller than the basic width dimension L2. Further, the illustrated basic width dimension L2 represents the module width of the furring strip panel 4 arranged in the central portion of the outer peripheral portion of the building, and the furring strip panel 4 arranged in the outer corner portion and the inner corner portion of the building. The width (and the pitch of the columns 2) of the pillar 2 may be smaller or larger than the basic width dimension L2.

As shown in FIGS. 2 and 3, the furring strip panel 4 of the present embodiment is fixed to the pillar 2 in a state of being taken out to the outside of the pillar 2 and the beam 3. The arrow A2 in FIG. 3 indicates the outdoor direction (outdoor side) of the outer wall structure 1.

That is, the furring strip panel 4 is arranged away from the outdoor surfaces (outdoor side surfaces) 2a and 3a of the columns 2 and the beams 3 in the outdoor direction (direction indicated by the arrow A2 in FIG. 3). More specifically, a gap is provided between the indoor surface (indoor side surface) 4b of the furring strip panel 4 and the outdoor surface 2a of the pillar 2 and the outdoor surface 3a of the beam 3. Since the size of the pillar 2 is the same on each floor, the distance between the indoor surface 4b of the furring strip panel 4 and the outdoor surface 2a of the pillar 2 is constant, as shown in FIG.

In this way, the furring strip panel 4 is arranged so as to form a gap between the beam 3 and the outdoor surface 3a, so that the furring strip panel 4 extends in the vertical direction beyond the beam 3 located between the floors. That is, the furring strip panel 4 of the present embodiment has a height of a plurality of floors.

More specifically, the height dimension L1 of the furring strip panel 4 is approximately equal to the distance from the vicinity of the floor surface height of the first floor of the building to the vicinity of the height of the beam 3 located at the upper part of the third floor. Thereby, in the three-story building, the furring strip panel 4 can be composed of one layer in the vertical direction. The lower end position of the furring strip panel 4 (near the floor height of the first floor) typically corresponds to the position of the top end of the waist wall 11. The waist wall 11 is a concrete standing wall constructed on the outdoor side of the foundation located under the pillar 2.

Since such a furring strip panel 4 is produced at a factory, it is transported to the site by truck. Therefore, it is desirable that the actual size of the furring strip panel 4 is set so that the height dimension L1 is 9500 mm or less and the basic width dimension L2 is 2200 mm or less in consideration of the size that can be transported by truck.

A configuration example of each furring strip panel 4 is as follows. With reference to FIG. 1, the furring strip panel 4 connects a pair of vertical frames 41 and 42 extending in the vertical direction on both side portions (both ends in the horizontal direction) and upper and lower ends of the vertical frames 41 and 42, respectively. Includes a pair of horizontal frames 44, 45. The pair of vertical frames 41 and 42 are fixed to two pillars 2 adjacent to each other along the horizontal direction. The furring strip panel 4 further includes a plurality of vertical furring strips 43 and a plurality of cross rails 46. The vertical furring strip 43 extends in the vertical direction between the vertical frames 41 and 42, and is bridged between the horizontal frames 44 and 45. The cross rail 46 extends in the lateral direction between the horizontal frames 44 and 45, and is bridged between the vertical frames 41 and 42.

The above-mentioned refractory base material 5 may be fixed to the outdoor surface 4a of the furring strip panel 4 in advance at the factory. In that case, further labor saving at the site becomes possible. Further, when an opening such as a window is provided on the outer wall of the building, a sash outer frame 47 as an opening base may be attached in advance as in the furring strip panel 4A of FIG.

(Structural example of the connection between the furring strip and the pillar)
A structural example of the connecting portion between the furring strip panel 4 and the pillar 2 will be described with reference to FIGS. 4 to 6.

In the present embodiment, the pillar 2 and the furring strip panel 4 are connected by a connecting member 7. Since the furring strip panel 4 is arranged in a state of being brought out to the outdoor side of the pillar 2, the connecting member 7 is located between the outdoor surface 2a of the pillar 2 and the indoor surface 4b of the furring strip panel 4. ..

As shown in FIG. 4, the plurality of connecting members 7 are arranged at intervals from each other along the vertical direction. The vertical distance between the connecting members 7 is preferably 2400 mm or less.

The connecting member 7 includes an engaged member 71 fixed to the outdoor surface 2a of the pillar 2 and an engaging member 72 fixed to the indoor surface of the vertical frames 41 and 42 of the furring strip panel 4. The engaging member 72 engages with the engaged member 71 on the pillar 2 side. FIG. 6 shows an engaged member 71 fixed to the pillar 2 and an engaging member 72 fixed to the vertical frame 42 of the furring strip panel 4 which is attached to the pillar 2.

As shown in FIGS. 4 and 6, both the engaged member 71 and the engaging member 72 are composed of, for example, an L-shaped bracket. That is, the engaged member 71 is in contact with the outdoor surface 2a of the pillar 2, and has a plate-shaped contact portion 711 extending in the vertical direction and a plate-shaped contact portion 711 protruding in the outdoor direction from the upper end edge of the contact portion 711. It is composed of a protruding portion 712. Further, the engaging member 72 is in contact with the indoor surface 42a of the vertical frame 42, and has a plate-shaped contact portion 721 extending in the vertical direction and a plate-shaped contact portion 721 protruding in the indoor direction from the lower end edge of the contact portion 721. It is composed of a protruding portion 722.

The engaged member 71 and the contact portions 711 and 721 of the engaging member 72 are fixed to the mounting surface (outdoor surface 2a of the pillar 2 and indoor surface 42a of the vertical frame 42) in advance by welding or the like. That is, the furring strip panel 4 of the present embodiment is carried into the site with the engaging member 72 fixed to the indoor surface of each of the vertical frames 41 and 42. Similarly, the pillar 2 is carried into the site with the engaged member 71 fixed to the outdoor surface 2a. Therefore, it is possible to simplify the installation work of the furring strip panel 4 in the field.

At the time of mounting the furring strip panel 4, the operator makes the protruding portion 722 of the engaging member 72 projecting indoor from the furring strip panel 4 and the protruding portion 71 of the engaged member 71 projecting outward from the pillar 2. By placing it on the 712, the engaging member 72 is engaged with the engaged member 71. As a result, the furring strip panel 4 is temporarily placed at a position where it should be fixed.

The protruding portion 722 of the engaging member 72 and the protruding portion 712 of the engaged member 71 are finally fixed by the joining member 73. The joining member 73 is a screw member such as a bolt. Through holes 713 and 723 are provided in the protrusions 712 and 722, respectively. By temporarily placing the protruding portion 722 of the engaging member 72 on the protruding portion 712 of the engaged member 71, the joining member 73 is inserted into the through holes 713 and 723 of both protruding portions 712 and 722. , The engaged member 71 and the engaging member 72 are finally fixed. As a result, the furring strip panel 4 is fixed to the pillar 2.

As described above, since the distance between the indoor surface 4b of the furring strip panel 4 and the outdoor surface 2a of the pillar 2 is constant on each floor, the configuration of the connecting member 7 can be made common regardless of the mounting position. it can.

Further, as shown in FIG. 4, the size of the pillar 2 may differ depending on the floor, but even in that case, the protrusion 712 of the engaged member 71 protruding from the pillar 2 in the outdoor direction is projected. All you have to do is change the degree. That is, the same engaging member 72 fixed to the furring strip panel 4 can be used regardless of the mounting position. Therefore, the number of parts for outer wall construction can be reduced. In addition, the installation work of the furring strip panel 4 on site can be simplified.

The engaged member 71 is configured as a member common to the two vertical frames 41 and 42, as shown in FIGS. 5 and 6, not for each of the vertical frames 41 and 42 that are engaged with each pillar 2. May be good.

Further, in the present embodiment, both the engaged member 71 and the engaging member 72 are configured by the L-shaped bracket, but the present invention is not limited. As long as at least one of the engaged member 71 and the engaging member 72 is provided with a protruding portion protruding toward the mating side, these shapes are not limited.

(About the fireproof structure of the outer wall)
It is desirable that the outer wall structure 1 of the present embodiment has fire resistance. The fireproof structure of the outer wall of the present embodiment will be described below.

As described above, in the present embodiment, the engaged members 71 fixed to the outdoor surface 2a of the pillar 2 are arranged at intervals in the vertical direction. Therefore, as shown in FIG. 7, the fireproof coating material 9 can be sprayed around the pillar 2 (the entire outer surface). The fireproof coating material 9 is a nonflammable member, for example, rock wool. As a result, the entire circumference of the pillar 2 is covered with the fireproof coating material 9, so that the pillar 2 can be made into a fireproof structure.

The fireproof coating material 9 is also spread inside the furring strip panel 4. It is also sprayed on the beam 3. As a result, the building provided with the outer wall structure 1 of the present embodiment can be made a fireproof building. The refractory coating material 9 may be composed of a dry member (for example, a sheet-like film) instead of a wet one, or these may be used in combination.

FIG. 12 is a cross-sectional view showing the outer wall structure 100 of the comparative example. In the outer wall structure 100, the furring strip 104 is fitted between the columns 2 adjacent to each other. In this case, the pillar 2 and the vertical frames 141 and 142 of the furring strip 104 located on both sides thereof form a composite structure. In such an outer wall structure 100, the outer wall surface material 6 is in contact with the outdoor surface 2a of the pillar 2. Therefore, the fireproof coating material 9 cannot be arranged on the outdoor surface 2a of the pillar 2. In order to confirm the fire resistance performance of such an outer wall structure 100, a fire resistance test is required.

On the other hand, according to the outer wall structure 1 of the present embodiment, since the pillar 2 and the furring strip panel 4 are independently covered with the fireproof coating material 9, the fireproof performance of the pillar 2 and the furring strip panel 4 are individually provided. Can be confirmed in. Therefore, the fire resistance performance of the outer wall structure 1 can be confirmed without performing a fire resistance test.

(Allocation of outer wall material)
An example of allocating the outer wall surface material 6 will be described.

As shown in FIG. 1, the outer wall surface material 6 is attached so that the allocation core is located at the core of the pillar 2 (vertical joint between the furring strip panels 4) or the center of the furring strip panel 4. That is, the allocation core of the outer wall surface material 6 may coincide with the core of the pillar 2, or may be located at the center of the furring strip panel 4. Further, the outer wall surface material 6 may straddle the vertical joint (that is, the core position of the pillar 2) of the furring strip panel 4.

Specifically, the width of the outer wall surface material 6 may be substantially equal to the basic width dimension L2 of the furring strip panel 4 (W1 in FIG. 2), or the basic width dimension L2 of the furring strip panel 4 may be omitted. It may have a size 1.5 times (W2 in FIG. 2).

The joint treatment of the vertical joints of the outer wall surface material 6 and the vertical joints of the furring strip panel 4 differs depending on the allocation of the outer wall surface material 6.

FIG. 8 shows a structural example of the outer wall joint portion when the allocation core of the outer wall surface material 6 coincides with the core of the pillar 2. In this structural example, a hat-type joiner 81 and a wet sealing 82 are provided at vertical joints between the outer wall members 6 adjacent to each other.

The hat-type joiner 81 is arranged so as to straddle the adjacent furring strip panels 4 and covers the vertical joints of the furring strip panels 4. Specifically, both ends of the hat-type joiner 81 are fixed to the outdoor surface sides of the vertical frames 41 and 42 of the adjacent furring strip panels 4, respectively. Although not shown, the hat-type joiner 81 is fixed on the surface of a moisture-permeable waterproof sheet (not shown). The moisture-permeable waterproof sheet is attached across the vertical frames 41 and 42 (between the fireproof base materials 5) of both panels 4 so as to close the vertical joints of the furring strip panel 4. The wet sealing 82 is installed on the outdoor side of the hat type joiner 81.

According to this configuration, the hat-type joiner 81 is provided so as to straddle the vertical joints between the furring strip panels 4. Since the hat-type joiner 81 is made of metal, the hat-type joiner 81 can also serve as a refractory material. That is, in the outer wall structure 1, the refractory material can be arranged even at the portion where the refractory base material 5 is interrupted.

FIG. 9 shows a structural example of the outer wall joint portion when the allocation core of the outer wall material 6 is located at the center of the furring strip panel 4. Also in this structural example, a hat-type joiner 81 and a wet sealing 82 are provided at the vertical joints between the outer wall members 6 adjacent to each other. However, the hat-type joiner 81 is fixed to the vertical furring strip 43 located at the center of the furring strip panel 4 via the fireproof base material 5. Also in this case, a moisture permeable waterproof sheet (not shown) is arranged at the attachment position of the hat type joiner 81. The vertical furring strip 43 is composed of, for example, two C-shaped steels arranged back to back.

FIG. 10 shows a structural example of the panel joint portion when the outer wall surface material 6 straddles the vertical joint of the furring strip panel 4. In this structural example, since the outer wall surface material 6 straddles the core of the pillar 2, the vertical joints between the furring strip panels 4 do not match the vertical joints of the outer wall surface material 6. Therefore, the aluminum foil tape 83 is attached to the vertical joints between the furring strip panels 4 so as to straddle the adjacent furring strip panels 4. In this case, it is only necessary to attach the aluminum foil tape 83 instead of the hat-type joiner 81 to the vertical joints of the furring strip panel 4, so that the workability is excellent. The moisture permeable waterproof sheet (not shown) may be arranged on the surface side of the aluminum foil tape 83.

Also in this structural example, since the aluminum foil tape 83 is located at the portion where the refractory base material 5 is interrupted, the aluminum foil tape 83 can also serve as the refractory material as in the case of the hat type joiner 81.

8 to 10 show an example in which an air layer 60 is provided between the refractory base material 5 fixed to the surface of the furring strip panel 4 and the outer wall surface material 6 which is a ceramic siding. ing. However, the refractory base material 5 and the outer wall surface material 6 may be arranged in close contact with each other without passing through the air layer 60.

As described above, according to the present embodiment, the pillars 2 are arranged at a pitch (P) that matches the basic width dimension L2 of the furring strip panel 4. Therefore, the furring strip panel 4 can be connected by the pillar 2 only by providing the engaging member 72 of the connecting member 7 only on the vertical frames 41 and 42 located on both sides of the furring strip panel 4. Therefore, it is not necessary to add a member such as a horizontal member only for joining the panels, unlike the form in which the furring strip panel is joined from the beam 3. Therefore, since there is no horizontal member that interferes with the pillar 2, it is possible to secure a construction space when covering the periphery of the pillar 2 with the fireproof coating material 9. Further, as a result, the position of the opening in the furring strip panel 4 can be set relatively freely.

Further, since the pitch of the pillars 2 is about 2 meters, the size of one pillar 2 can be made relatively small. Therefore, the sprayed area of the fireproof coating material 9 can be reduced. In addition, since a large pillar shape does not appear on the outer periphery of the indoor side of the building, the degree of freedom in the layout of furniture near the outer wall is increased. As a result, the space inside the building can be effectively used.

Further, since the size of the pillar 2 is unified for each floor, it is possible to unify the connection with the furring strip panel 4. That is, since all the connecting members 7 can be made the same on each floor, the furring strip panel 4 can be the same fit. Since the furring strip panel 4 is attached to the outdoor surface 2a of the pillar 2, the size of the pillar 2 may be different as long as the lines of the outdoor surface 2a of the pillar 2 are aligned on the same floor. That is, the cores of the pillars 2 adjacent to each other in the lateral direction may be slightly displaced in the inner and outer directions.

Further, the furring strip panel 4 is engaged only with the pillar 2 and does not interfere with the beam 3. Therefore, the height dimension of the furring strip panel 4 can be set to the height of the second floor or more (corresponding to the third floor) of the building. That is, one furring strip panel 4 integrated over a plurality of floors (for example, the third floor) can be attached to the pillar 2. As a result, it is possible to reduce the time and effort required to adjust the degree of entry / exit of the furring strip panel in the height direction at the site. Further, since the horizontal joint of the furring strip panel can be eliminated, the joint processing of the horizontal joint can be reduced. In addition, cost reduction by reducing parts and shortening of construction period can be expected. Further, by eliminating the horizontal joint of the furring strip panel, the risk of water leakage can be reduced.

In the present embodiment, the outer wall surface material 6 is made of ceramic siding, but the outer wall surface material may be made of, for example, a square wave iron plate. FIG. 11 shows a configuration example of the furring strip panel in this case.

With reference to FIG. 11, the furring strip panel 4B includes a pair of vertical frames 41, 42 and a pair of horizontal frames 44, 45, similarly to the furring strip panel 4 described above. On the other hand, it does not include the vertical furring strip 43 and the horizontal rail 46 such as the furring strip panel 4, but instead includes a plurality of horizontal furring strips 48 connecting the vertical frames 41 and 42. The horizontal furring strips 48 are arranged between the horizontal frames 44 and 45 at intervals in the vertical direction. The vertical distance between the horizontal furring strips 48 is preferably 900 mm or less.

In this way, when the square wave iron plate is attached to the furring strip panel 4B, the outdoor surface of the furring strip panel 4B does not have to be covered with the plate-shaped refractory base material 5.

Even in such a furring strip panel 4B, the connection with the pillar 2 is the same as that of the furring strip panel 4. That is, also in the furring strip panel 4B, the engaging member 72 fixed to the indoor surface of the vertical frames 41 and 42 is the same as that of the furring strip panel 4. Therefore, it is possible to make different types of outer wall materials on the same surface of the building.

In the embodiment described above, the building has three floors, but at least it can be applied to a building including upper floors and lower floors adjacent to each other. When the lowest floor on the ground is the first floor, the lower floor may be the second floor and the upper floor may be the third floor. In that case, the lower end position of each furring strip panel does not have to be near the floor height of the first floor. That is, each furring strip panel is at least fixed to both the pillars located on the upper floor and the pillars located on the lower floor, and vertically beyond the beam located between the upper floor and the lower floor. It suffices if it is extended. If each furring strip has a height equivalent to three floors, it is from the vicinity of the floor height of the lower floor (first floor) to the floor above the upper floor (second floor) (first floor). It may extend to the vicinity of the beam height at the upper part of the 3rd floor).

It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and it is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1,100 Exterior wall structure, 2 columns, 3 beams, 4,4A, 4B, 104 Furnace panel, 5 Fireproof base material, 6 Exterior wall material, 7 Connecting member, 9 Fireproof coating material, 11 Waist wall, 41,42, 42,141,142 Vertical frame, 43 Vertical furring strip, 44,45 Horizontal frame, 46 Horizontal rail, 47 Sash outer frame, 48 Horizontal furring strip, 60 Air layer, 71 Engagement member, 72 Engagement member, 73 Join Parts, 81 hat type joiner, 82 wet sealing, 83 aluminum foil tape.

Claims (6)

It is the outer wall structure of a multi-story building that includes the upper and lower floors that are adjacent to each other.
A plurality of pillars arranged at a constant pitch along the outer periphery of the building,
Beams arranged intersecting the columns and
It includes a pair of vertical frames extending in the vertical direction on both sides thereof , has the same basic width dimension as the pitch of the pillar, and is fixed to the pillar in a state of being taken out to the outside of the pillar and the beam. and a plurality of furring strip panel,
The pillar and the beam are arranged so as to be spaced apart from each other in the vertical direction, and a gap is provided between the outdoor side surface of the pillar and the beam and the indoor side surface of the vertical frame of the furring strip panel. An outer wall structure including a connecting member for connecting the vertical frame . Each furring strip panel is fixed to both the pillar arranged on the upper floor and the pillar arranged on the lower floor, and the beam located between the upper floor and the lower floor is formed. The outer wall structure according to claim 1, which extends beyond the vertical direction. The outer wall structure according to claim 1 or 2 , further comprising a fireproof coating material that covers the periphery of the pillar. The connecting member includes an engaged member fixed to the outdoor surface of the pillar and an engaging member fixed to the indoor surface of the vertical frame of the furring strip panel and engaged with the engaged member. The outer wall structure according to any one of claims 1 to 3 . The outer wall material fixed to the furring strip panel and exposed to the outside,
The outer wall structure according to any one of claims 1 to 4 , further comprising a plate-shaped fireproof base material provided between the furring strip panel and the outer wall surface material and covering the outdoor surface of the furring strip panel. The outer wall structure according to any one of claims 1 to 5 , further comprising a refractory material arranged so as to straddle the vertical joints between the furring strip panels.

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