JP4053561B2 - Exterior insulation wall structure of reinforced concrete building - Google Patents

Description

  The present invention is to stretch the outer wall of a reinforced concrete building to the outer heat insulation with a breathable heat insulation panel, and more specifically, the upper and lower connections of the breathable heat insulation panel by inserting a cross joint into the ventilation groove, In addition, it is implemented in a form that guarantees the ventilation function, and belongs to the technical field of reinforced concrete construction.

  Reinforced concrete exterior thermal insulation buildings cover the outside of the concrete frame with a thermal insulation layer, so that cracks due to thermal stress due to solar radiation can be suppressed, and the concrete frame does not come into contact with air. It can suppress corrosion of reinforcing steel bars, improve the durability of the building, maintain the temperature environment in the building, suppress the occurrence of condensation in the building, and suppress the occurrence of mold and mites. Since it is also excellent in terms of health, it is highly regarded as an energy-saving high-performance building.

  FIG. 8 and FIG. 9 are techniques related to external heat insulation construction of a reinforced concrete building disclosed in non-patent literature. As shown in FIG. 8 (A), the composite panel is 25 mm in which a large number of grooves are arranged in parallel on the inner surface. As shown in FIG. 8 (B), the cement board has a thickness of 13 mm, and only the groove at both ends, the original end of the groove is 35 mm. The open end width is 30 mm, the outer side is inclined by 60 °, the inner side is inclined by 80 °, and the composite panel is a heat insulating composite panel of the outer heat-insulating adhesion type, but is used as a non-breathable panel. In addition, it is an integrated layered kimono of an extruded cement board and hard urethane foam as an exterior base material. Convenience in combination with the formwork and strength as an exterior base material (bending, compression, tension, shear) , Freezing and thawing performance (low water absorption, low water content), fire resistance, durability , And are provided with holds the thermal insulation as a "Achilles KD panel (trade name)".

  8 (C) and (D) are cross joints used for connecting the upper and lower panels when used as a formwork of the Achilles KD panel (trade name), and FIG. 8 (C) is an overall perspective view. FIG. 8D is a cross-sectional view taken along the line D-D of FIG. 8C, and the cross joint has an inclined side edge from the both end edges of the vertical bottom plate of the cross-shaped bottom plate. From the viewpoint of (possibility), the vertical section for fitting the upper and lower sides is formed by standing up in a 60 ° cross section, and the side plate is erected from the four peripheral edges of the horizontal bottom plate to form a box-shaped horizontal contact portion The upper vertical side, the lower vertical side, and the left and right horizontal abutting portions in the center are integrally formed with a bottom plate, and the bases of the upper and lower vertical sides and the left and right horizontal abutting portions are reinforced with a horizontal partition and a vertical partition. It is an integrated plastic molded product.

FIG. 9 is an explanatory view of the usage form of the Achilles KD panel (trade name). FIG. 9 (A) is a cross-sectional view of a cross joint inserted into the groove of the panel, and FIG. 9 (B) is a cross joint. FIG. 9C is a vertical cross-sectional view of the panel vertical connection portion at the horizontal joint portion where the cross joint is not present, and FIG. 9C is a vertical cross-sectional view of the panel vertical connection portion at the inserted horizontal joint portion.
That is, when the composite panel is connected up and down, the cross joint is formed so that the vertical side of the bottom plate is in sliding contact with the heat insulating layer of the groove and the lower vertical side is the upper end of the lower panel, as shown in FIGS. The upper vertical side is inserted into the groove from the lower edge of the upper panel, a horizontal joint with the vertical width of the horizontal abutment is formed between the upper and lower panels, and the composite panel surface connected vertically and horizontally is connected to the outside of the concrete wall Concrete is cast as a formwork.

The horizontal joints between the panels, as shown in FIGS. 9 (B) and 9 (C), have a highly foamed polyethylene plate interposed between the upper and lower heat insulating layers, in the box of the horizontal contact portion of the cross joint, and in the upper and lower horizontal partitions. The space is filled with plastic back-up material, and the long plastic back-up material is extended between the upper and lower grooves of the horizontal joint where there are no cross joints, and the finishing seal is filled in front of the back-up material. To form a horizontal joint.
The concrete frame formed in the conventional example (FIGS. 8 and 9) becomes an outer heat insulation, and each groove group of the cement panel of the composite panel functions as an air heat insulation layer with the upper and lower ends closed by a backup material.
Published by Achilles Co., Ltd. “Achilles KD Panel Model No. (No. F-01.1.10)” Published by Achilles Co., Ltd. “Achilles KD Panel Pamphlet (No. 1-19.98.9)” "Achilles KD Panel Technical Document" issued by Achilles Corporation

In the conventional composite panel, the cement board was originally developed as an exterior base material used in combination with a formwork, and due to the presence of the grooves, the cement board itself was reduced in weight and the adhesion strength with the cast concrete was increased. When adopting the horizontal pasting method, by placing the 80 ° inclined side on the upper side and the 60 ° inclined side on the lower side, the concrete is placed on the 60 ° inclined side when casting concrete. The concrete wraps around by the casting pressure, and the 80 ° inclined side in the upper groove makes the air flow smooth and secures the cement board and the casting concrete.
The Achilles KD panel (trade name) is a composite panel for external heat insulation combined with a formwork by simply adhering a heat insulation layer to the cement board according to the flow of research and development of external heat insulation of concrete frames. It is widely used as a contact-type composite panel.

Therefore, in the conventional example, the composite panel is an adhesive layer type composite panel and can cover the concrete frame with an outer heat insulation, but there is no ventilation function at the interface between the heat insulation layer of the composite panel and the cement board. Therefore, internal condensation occurs at the interface between the heat insulating layer and the cement board, and the problem of causing interface peeling and material deterioration due to repeated freezing and evaporation of the condensation, due to heat stress of the cement board and the exterior material as the exterior base material There is a problem of inferiority.
In addition, the cross joint also has a shape in which the inclined side of the vertical vertical side is expanded from the workability of mold forming (ease of die removal), and when inserted into the groove as shown in FIG. The bottom plate is in sliding contact with the heat insulation layer, and the cross joint has a box-shaped space in front of the horizontal joint spacing between the upper and lower panels, as shown in Fig. 9 (B). Fine manual work is required to fill the material into the space of the cross joint.
In addition, as shown in FIG. 9A, one inclined side is at the same angle as the side of the groove, but the other inclined side is a fitting in a form that maintains a triangular space with the groove side. When the upper panel is suspended and fitted to the cross joint, the panel is likely to come off and the vertical connection workability of the panel is poor.

In addition, when the cross joint is inserted into the groove of the cement plate, it cuts off the vertical air communication of the groove, and if applied to a breathable heat insulating composite panel, the cross joint insertion part impedes air permeability. Is.
The present invention pioneeringly solves and improves the problems of the adhesive layer type composite panel as described above and the problems of the cross joint, and adopts a novel cross joint to provide a breathable composite panel. In combination with the concrete wall formwork, the concrete frame is provided with external heat insulation, a uniform ventilation function is given to the entire panel surface, the internal condensation of the heat insulation layer is suppressed, and the heat of the exterior material and exterior base material (cement board) It provides an epoch-making exterior heat insulating wall structure that can suppress deterioration due to stress.

  In the present invention, for example, as shown in FIG. 1 (A), a close-contact type breathable heat insulating panel 1 in which a formed cement board 1A having a groove G, G 'group on its inner surface and a heat insulating layer 1B are layered is reinforced concrete. It is an outer heat insulating wall structure stretched on the outer surface of the wall W of the building, and the vertical connection of the breathable heat insulating panel 1 is, for example, as shown in FIG. 5, FIG. 6, FIG. 6M, 10M, and 11M are provided in the center, and are provided with vertical pieces 5F, 6F, 10F, and 11F for vertical insertion and vertical pieces 5F ′, 6F ′, 10F ′, and 11F ′ for downward insertion in the center, and The vertical pieces of the cross joints 5, 6, 10, 11 having the air communication grooves GA are provided inside the vertical pieces for insertion, and the lower vertical pieces for insertion are extended from the groove G at the upper end of the lower panel 1. From the groove G at the lower end of the panel 1, the upper vertical piece for insertion is placed in the opposite groove G. It is related to the outer heat insulating wall structure of a reinforced concrete building in which the upper and lower breathable thermal insulation panels 1 are stretched while retaining the ventilation function of the opposing grooves G and G ′.

In this case, the horizontal contact pieces 5M, 6M, 10M, and 11M of the cross joint are in contact with and sandwiched between the upper end surface of the cement plate 1A of the lower panel 1 and the lower end surface of the cement plate 1A of the upper panel 1. Therefore, the protrusion length X3 to each side may be a length that does not interfere with the side groove G ′ of the cross joint insertion groove G.
Also, “inside of the vertical piece for insertion” means that the cross-sectional form of the vertical piece for insertion is a substantially U-shape of the bottom plate and the side plates inclined from the side edge of the bottom plate. It means the inner space surrounded by.
Further, the “tensioning” of the breathable heat insulating panel 1 to the outer surface of the wall W may be an outer heat insulating structure, and a heat insulating layer may be provided so that no interfacial air flow is generated on the concrete wall W. Typically, the concrete wall W is placed by using the breathable heat insulating panel 1 as an outer mold of the wall.

In addition, as shown in FIG. 1A, the vertical connection joint dx and the right and left connection joint dy between the panels 1 are used for the conventional joint sealing as shown in FIG. 1A. Therefore, if the grooves G and G ′ in each panel 1 are not closed, all the grooves G and G ′ can maintain the ventilation function.
Therefore, according to the present invention, the breathable heat insulation panel 1 in which the grooves G and G ′ are vertically arranged in the inside protects the concrete wall W from heat insulation, and the cross joint insertion portion at the upper and lower connection portions of each panel 1. Even in the groove G in the air, the uniform air permeability can be secured over the entire surface of the panel 1, the internal condensation at the interface between the heat insulating layer 1B of the panel 1 and the cement board 1A can be suppressed, and the cement board 1A and heat stress on the exterior material attached to the cement board 1A can be suppressed, and it is possible to provide a groundbreaking, energy-saving, high-performance, heat-insulated reinforced concrete building that is excellent in durability while being externally insulated. .

  Further, in the breathable heat insulating panel 1 of the present invention, as shown in FIG. 2A, the heat insulating layer 1B protrudes from the cement plate 1A with a large dimension d2 ′ (standard: 20 mm) and has a small dimension on the other side. d1 ′ (standard: 10 mm), large dimension d2 (standard: 40 mm) protrudes at the upper end, and small dimension d1 (standard: 20 mm) protrudes at the lower end. The grooves G and G ′ of the cement board 1A are shown in FIG. As shown in (A) and (B), at least the groove G on both ends and the groove G on both sides of the central thick portion 1D are inclined to the bottom surface GB and the inclined side GS inward at the left and right equal angles θ, A trapezoidal cross section having an opening GF at the upper end is preferable.

  In this case, in the standard panel 1, the width AW of the cement board 1A is 490 mm, the width BW of the heat insulating layer 1B is 500 mm, the thickness T1 of the panel 1 is 100 mm, and the thickness T2 of the cement board 1A is 25 mm, the thickness T3 of the heat insulating layer 1B is 75 mm, the depth T5 of the grooves G and G ′ is 13 mm, the thickness T4 of the plate-like portion 1C is 12 mm, and the groove G for inserting the cross joint is As shown in FIG. 3B, the inclined sides GS on both sides are inclined inward by 60 °, and the width wb of the groove bottom GB is 42.8 mm.

Therefore, when covering the concrete wall W with the heat insulating panel 1 with the outer heat insulation, it is necessary for the vertical and horizontal connections of the panels 1 to bring the heat insulating layers 1B into close contact with each other. In the upper and lower panel connecting portions, the horizontal joint dx having a size of large dimension d2-small size d1, and in the left and right panel connecting portions, a vertical joint dy having a size of large dimension d2 '-small size d1', and Each panel 1 can be stretched between the top, bottom, left and right phases, and leaching of the cast concrete from the heat-insulating layer 1B contact interface can be prevented by the cement plate 1A surface.
In addition, since the width G of the bottom GB is large and the width wf of the opening GF is small, the groove G has a sufficient adhesion area to the heat insulating layer 1B on the outer surface of the plate-like portion 1C. In addition, the risk of disengagement after insertion of the vertical piece for inserting the cross joint can be suppressed, sufficient space for inserting the cross joint and sufficient air flow cross-sectional area can be secured, and the invention of claim 1 can be suitably implemented. .

  Further, as shown in FIGS. 5, 6, and 7, the cross joints 5, 6, 10, and 11 include the upper fitting vertical piece 5F (6F, 10F, 11F) and the lower fitting vertical piece 5F ′ (6F ′, 10F ′, 11F ′) are integrated with the bottom plate 5D (6D, 10D, 11D), and the upper and lower fitting vertical pieces are inwardly cross-sectionally inward at the same angle on both sides with the bottom plate 5D (6D, 10D, 11D). It is a trapezoid with an open upper end provided with an inclined side plate 5S (6S, 10S, 11S), and the inclination angle θ of the outer surface of the inclined side plate is the same as the inclination angle θ of the inclined side GS of the groove G of the cement plate 1A. The width X2 of the outer surface Os of the bottom plate is a dimension that can be adjusted to the left and right with respect to the bottom surface GB of the groove G, and the bottom plate of the upper and lower fitting vertical pieces is disposed on the bottom GB side of the groove G of the cement plate 1A. Is preferred.

  In this case, with respect to the width wb (standard: 42.8 mm) of the bottom surface GB of the groove G, the bottom plate 5D of the vertical pieces 5F, 5F ′ (6F, 6F ′, 10F, 10F ′, 11F, 11F ′) for insertion. If the outer surface width X2 (standard: 38 mm) of 6D, 10D, and 11D) is set to be smaller by about 5 mm, the cross joint 5 can be adjusted in the horizontal direction within the groove G of the cement board 1A as shown in FIG. Even with a slight left-right displacement of the upper and lower panel 1, the vertical fitting 5F, 5F ′ (6F, 6F ′, 10F, 10F ′, 11F, 11F ′) of the upper and lower fittings of the cross joint 5 can be smoothly inserted. Can be done.

Further, the cross joint 5 is advantageous in securing strength because the vertical section for insertion is trapezoidal in cross section and the bottom side is a bottom plate.
Moreover, since the cross joint 5 is fitted with the bottom plate 5D (6D, 10D, 11D) as the bottom GB side of the groove G, the outer surface Os of the bottom plate 5D is a cement plate of the lower panel as shown in FIG. Between the upper end of 1A and the lower end of the cement panel 1A of the upper panel, the bottom surface of the groove at the interval of the joint dx formed by the vertical width Y2 (Y2 ') of the horizontal contact piece 5M (6M, 10M, 11M) When GB is closed and the bottom plate outer surface Os of the horizontal contact piece performs a backup function, the filling operation of the sealing 4 of the horizontal joint dx is facilitated.

In the present invention, the horizontal contact piece 5M (10M) of the cross joints 5 and 10 defines the horizontal joint dx interval between the upper and lower molded cement boards 1A at the upper and lower connecting portions of the breathable heat insulating panel 1. In the space of the horizontal joint dx between the left and right cross joints 5 (10), the honeycomb backer 2 shown in FIG. 2 (B) having the same height as the vertical width Y2 of the horizontal contact piece 5M (10M) It is preferable to extend and interpose the G ′ group so as to guarantee the ventilation function of the opposing grooves G and G ′ group between the upper and lower panels 1.
In this case, the honeycomb backer 2 has a height 2h equal to that of the horizontal abutting piece 5M as shown in FIG. 2 (B) and a front / rear width 2w as shown in FIG. 4 (B). The same dimension as the groove width T5 (standard: 13 mm) may be used.
Therefore, the distance between the horizontal joints dx between the upper and lower panels 1 is divided as required by the outer surface of the honeycomb backer 2 and the outer surface of the bottom plate 5D (10D) of the cross joint on the grooves G and G ′ of the cement plate 1A. Then, as shown in FIG. 4 (A), the tape-like backup material 3 having the outer surface Os width of the horizontal contact piece 5M is stuck to the outer surface of the cross joints 5 and 10, and the sealing 4 is filled to the horizontal joint dx interval. If the processing is performed, the upper and lower panels 1 can be connected to each other by the vertical grooves for inserting the honeycomb backers 2 and the cross joints 5 and 10 into the upper and lower panels 1. The grooves G and G ′ serve as an outer heat insulating coating having a ventilation function.

Further, the backup material 3 is adhered to the exposed outer surface Os of the cross joints 5 and 10 at the interval of the horizontal joint dx, and the sealing 4 is filled in front of the honeycomb backer 2 and the backup material 3 to form the horizontal joint dx. preferable.
In this case, the backup material 3 may be a thin (standard: 2 mm thick) flexible plastic plate.
Therefore, the back-up material 3 is slightly back and forth (around 1 mm) in the groove G, and can completely close the gap formed between the bottom plate 5D (10D) and the groove bottom surface GB. Can be prevented from entering, and the sealing of the beautiful horizontal joint dx is achieved.

  Further, the cross joints 5 (6, 10, 11) used in the invention of claim 1 are, for example, as shown in FIGS. 5, 6, and 7, both side edges of the vertical bottom plate 5D (6D, 10D, 11D). From the inclined side plate 5S (6S, 10S, 11S), the cross-sectional outer shape is inclined inwardly at an equal angle θ with the bottom plate as the bottom surface, and rises into a trapezoid with the upper end open, and the vertical piece 5F (6F, 10F for upward insertion) , 11F) and the vertical piece 5F ′ (6F ′, 10F ′, 11F ′) for downward insertion, and surrounded by the inclined side plates 5S (6S, 10S, 11S) and the bottom plates 5D (6D, 10D, 11D) on both sides. An air communication groove GA communicating in the vertical direction is formed on the inner side, and horizontal abutting pieces 5M (6M, 10M, 11M) are provided on both sides of the inclined side plates 5S (6S, 10S, 11S). Is.

In this case, since the horizontal abutment pieces 5M (6M, 10M, 11M) are abutted and sandwiched between the ends of the cement plates 1A of the upper and lower panels, the horizontal abutment pieces 5M (6M, 10M, 11M) May be a protrusion length X3 (standard: 18.5 mm) that does not interfere with the side groove G ′, and the protruding position from the inclined side plate is that both the upper and lower vertical pieces are inserted into the groove G. The height Y3 of the upper insertion vertical piece 5F (6F, 10F, 11F) is 50 mm, and the lower insertion vertical piece 5F ′ (6F ′, 6F ′, The height Y4 of 10F ′, 11F ′) is 30 mm.
Therefore, if the upper and lower panels 1 are connected to each other using the cross joints 5 (6, 10, 11) of the present invention, the horizontal abutment pieces 5M (6M, 10M, 11M) are end faces of the upper and lower panel cement boards 1A. The horizontal contact pieces 5M (6M, 10M, 11M) define the interval between the horizontal joints dx and the cross joint 5 Since the outer surface Os of (6, 10, 11) also serves as a backup function for sealing filling, it is possible to rationally perform panel upper and lower connection work, horizontal joint dx formation and sealing filling work.

In addition, even in the cement plate groove G into which the cross joint is inserted, the ventilation function is achieved through the air communication groove GA, and all the grooves G and G ′ of the breathable heat insulation panel 1 exhibit the ventilation function. Prevents uniform internal condensation on the entire panel surface and suppresses heat stress deterioration of exterior and exterior base materials (cement boards), making the concrete wall W a uniform and highly durable exterior exterior with a heat insulation coating. The invention of claim 1 can be suitably implemented.
Moreover, since the upper and lower vertical fitting pieces are trapezoidal in section with the bottom plate and the inclined side plates 5S (6S, 10S, 11S) on both sides, the trapezoidal section of the cement plate 1A having both adhesiveness to the heat insulating layer 1B and air permeability. The fitting of the vertical piece for fitting into the groove G is a fitting that facilitates the fitting work and is difficult to come off, and can be suitably carried out with the cross-sectional loss of the ventilation function being minimized.

In the cross joint, it is preferable that the horizontal contact pieces 5M and 10M have a box shape of bottom plates 5D and 10D having a vertical width Y2 for forming the horizontal joint dx and side plates 5P and 10P standing from the bottom plate edge. .
In this case, the vertical width Y2 of the bottom plates 5D and 10D may be determined by the design horizontal joint dx, the standard is 20 mm, and the lateral protrusion length X3 of the horizontal contact pieces 5M and 10M is also shown in FIG. ) As long as it does not interfere with the side groove G ′, and the standard X3 is 18.5 mm.
Accordingly, the horizontal abutting pieces 5M and 10M have a rigid structure depending on the box shape, and can be formed with a general wall thickness that is relatively thin (standard: 3 mm), not only metal but also plastic material.

Further, the horizontal contact pieces 6M and 11M may be plate bodies as shown in FIGS. 6D and 7C.
In this case, the vertical width Y2 ′ of the horizontal abutting pieces 6M and 11M, that is, the thickness Y2 ′ of the plate body is 3 mm as standard, and the cross joints 6 and 11 are, for example, disclosed in Japanese Patent Application No. 2005-289892 by the applicant. No. and the invention proposed in Japanese Patent Application No. 2005-31780 regarding the installation of cantilevered balconies to reinforced concrete exterior insulation buildings, etc. If the cross joints 6 and 11 are used, the upper and lower panels 1 are connected to the cement plate 1A with the horizontal abutment plates 6M and 11M having a thickness Y2 '(standard: 3 mm). The cruciform joints 6 and 11 close the connection gap between the upper and lower panels 1, such as a vertical connection between the upper and lower panels 1 where the sealing 4 is difficult to fill the horizontal joint dx. Like For proper vertical connection, it is possible to suitably employ a form in which the ventilation function of the vertical groove G is guaranteed.

Further, in the cross joints 5 and 6, as shown in FIGS. 5 and 6, the upper and lower fitting vertical pieces 5F, 5F ′, 6F, and 6F ′ have the inclined side plates 5S and 6S in the distal direction at the upper and lower ends. Preferably, the air communication groove GA is formed by the notches 5C and 6C of the taper portions 5S 'and 6S'.
In this case, the air communication groove GA causes a slight cross-sectional loss due to the tapered portions 5S ′ and 6S ′, but the groove G in which the cross joints 5 and 6 are inserted has a communication structure from the lowermost end to the uppermost end of the outer wall surface. Therefore, the minimum necessary ventilation function can be demonstrated by the draft ventilation power.
However, due to the presence of the tapered portions 5S ′ and 6S ′, the fitting operation between the cross joints 5 and 6 and the upper and lower panels 1 becomes smooth.

In addition, as shown in FIGS. 5 and 6, the upper and lower vertical pieces for insertion are outer edges t5 and t6 of the taper portions 5S ′ and 6S ′, which are inclined edges in the direction of the bottom plates 5D and 6D toward the tip. It is preferable to form the upper end pieces 5T, 6T and the lower end pieces 5B, 6B for reinforcement by the notches 5C, 6C at the portions.
In this case, the presence of the tapered portions 5S ′ and 6S ′ can smoothly perform the fitting operation between the cross joints 5 and 6 and the panel cement plate groove G, but at the same time, as shown in FIG. A cross-sectional loss is generated for the inner air communication groove GA.

However, since the outer edges t5 and t6 of the tapered portions 5S ′ and 6S ′ are tapered, the cross-sectional loss of the air communication groove GA can be reduced, and as shown in FIG. The vertical notches 5C and 6C from the base plate 5D to the taper portions 5S 'and 6S are coupled with the suppression of the narrowing of the cross-sectional area of the air communication groove GA by the taper portions 5S' and 6S '. The cross-sectional loss of the air communication groove GA due to the presence of ′ can be minimized.
Accordingly, the cross joints 5 and 6 have a necessary air flow function and are easily fitted into the panel 1, and are connected from the positions of the notches 5C and 6C to the upper and lower end pieces 5T (6T) and 5B (6B). The narrow edge integrated with the end of the bottom plate 5D has a reinforcing rib function and can give rigidity, and the strength is guaranteed, so that it can be provided as a molded product with a thin general thickness (standard: 3 mm). .

In addition, as shown in FIG. 7, the cross joints have inclined side plates 10S and 11S on both sides, the outer surface Of and the inner surface if of which are flat surfaces from the upper end to the lower end, and the cross-sectional shape is a base end b10 having a large size db. It is preferable that the shape is tapered from b11 to the small-sized df tips e10 and e11, and the upper and lower ends ts are inclined in the central direction from the bottom plates 10D and 11D to the tips e10 and e11.
In this case, it is advantageous in terms of molding that the inner surface if of the inclined side plate 10S (11S) is erected at a right angle to the bottom plate 10D (11D) surface.

Therefore, in the cross joints 10 and 11 of the present invention, the upper and lower end edges ts are inclined, so that the fitting of the panel cement plate 1A into the groove G is smooth, and the vertical pieces 10F and 10F ′ ( 11F, 11F '), since the base ends b10 (b11) of the upper and lower end edges ts as the pointed ends are thick and integrated with the bottom plate 10D (11D), the tip as the insertion guide portion has sufficient rigidity, and the panel 1 is easy to fit, can maintain a reliable fitting state with the bottom surface GB of the cement sheet groove G, and can hold the fitting panel 1 from above without coming off.
Moreover, since the air communication groove GA surrounded by the inner surface if of the inclined side plates on both sides and the inner surface of the bottom plate 10D (11D) is surrounded by a flat inner surface with a uniform cross-sectional area from the upper end to the lower end, there is little air flow resistance, Excellent air flow function.

In the cross joints 5, 6, 10, and 11 of the present invention, the length Y3 of the upper fitting vertical piece 5F (6F, 10F, and 11F) is as shown in FIGS. It is preferably larger than the length Y4 of the lower vertical fitting piece 5F ′ (6F ′, 10F ′, 11F ′).
The breathable heat insulating panel 1 employed in the present invention is advantageous in that the top and bottom and left and right connections are connected to each other. As shown in FIG. 4A, if the cross joint is inserted into the upper end of the lower panel, the upper panel 1 In this case, the lower end of the heat insulating layer 1B occupies a position above the phase chip length d1 (standard: 20 mm) from the lower end of the cement board 1A.

The upper fitting vertical piece 5F is formed to be longer than the lower fitting vertical piece 5F ′ by the phase missing length d1, so that the upper fitting vertical piece 5F is fitted into the cross joint 5 at the time of fitting work. Disengagement of the piece 5F can be suppressed.
Therefore, the length Y3 of the vertical fitting vertical piece 5F is set to be substantially longer than the length Y4 of the vertical fitting vertical piece by the step d1 for phase loss connection between the heat insulating layer 1B at the lower end of the panel and the cement board 1A. Thus, the fitting operation of the upper panel to the cross joint can be performed safely.

  In the present invention, a breathable heat insulating panel 1 formed by laminating a molded cement board 1A having a groove G, G ′ group on its inner surface and a heat insulating layer 1B is used as a cross joint 5 (6, 10) having an air communication groove GA. 11), the upper and lower connection panel 1 is connected to the outer wall W so that all the grooves G and G ′ including the groove G into which the cross joint is inserted have an air communication function. It can be continuously stretched on the outer wall W, and all panels can be evenly ventilated to prevent the panel cement board 1A as the exterior base material and the exterior material on the outer surface of the cement board 1A from being heated by solar radiation. Can suppress deterioration due to heat stress and improve durability.

In addition, the groove G, G ′ group exists at the layering interface between the heat insulating layer 1B of the panel 1 and the cement board 1A, and internal condensation of the heat insulating layer 1B can be suppressed by ventilation through the grooves G, G ′. Therefore, generation of internal dew condensation in the panel 1 and interface peeling between the cement board 1A and the heat insulating layer 1B due to repeated freezing and transpiration of dew condensation can be suppressed, and the durability of the outer wall W is improved.
Since the concrete outer wall W is covered with the outer heat insulating structure by the panel 1 whose entire surface is ventilated and the temperature is suppressed, an outer heat insulating structure having excellent durability is provided, and an energy saving and high performance reinforced concrete building is provided. Is possible.

Moreover, since the cross joint also includes the bottom plate 5D (6D, 10D, 11D) and the inclined side plates 5S (6S, 10S, 11S) on both sides, the vertical pieces for insertion with a trapezoidal cross section, the heat insulating layer 1B of the cement plate 1A. Because the adhesive surface is large and the cross-sectional area of the groove is large, it is easy to fit the panel cement board 1A into the trapezoidal groove G, and the panel 1 is prevented from coming off during the fitting work. I can do it.
And since the vertical piece for vertical insertion is provided with the air communication groove GA on the inner side, the connection between the upper and lower panels 1 is a vertical connection that allows the entire groove G, G ′ group of the panel 1 to exhibit a ventilation function. The invention of the outer heat insulating wall structure of the reinforced concrete building of Item 1 can be suitably implemented.

[Breathable thermal insulation panel (Fig. 2, Fig. 3)]
2A is a perspective view of the panel 1, FIG. 3A is a cross-sectional view of the panel, and FIG. 3B is a partially enlarged view of the cross-section of the panel.
As shown in FIG. 3 (A), the breathable heat insulating panel 1 includes a plurality of ventilation grooves G and G 'arranged in parallel on the inner surface of the cement board 1A, and the grooves G and G' group surfaces of the cement board 1A. In addition, the heat insulating layer 1B is laminated so as to close the open mouth surface of each of the grooves G and G ′, the width Aw of the cement board 1A is 490 mm, and the width Bw of the heat insulating layer 1B is 500 mm. In the standard panel, the height Ah of the cement board 1A is 2680 mm, and the heat insulating layer 1B protrudes from the cement board 1A by d2 (standard: 40 mm) at the upper end and enters d1 (standard: 20 mm) at the lower end. It is an integrated layer kimono that protrudes d2 ′ (standard: 20 mm) on the side and d1 ′ (standard: 10 mm) on the other side.

The heat insulating layer 1B is a foamed plastic heat insulating plate (rigid urethane foam of JIS 9511) having a thickness T3 of 75 mm. The cement plate 1A has a thickness T2 of 25 mm and a panel thickness T1 of 100 mm.
In addition, as shown in FIG. 3 (A), the arrangement of the grooves G and G ′ of the cement board 1A is a total of four on both ends and both sides of the central thick part 1D, and the other is a rectangular cross section. A total of eight grooves G ′ are arranged on one cement board 1A.
The reason why the trapezoidal grooves G are also arranged on both sides of the central thick part 1D is to cut the cement plate 1A at the central thick part 1D as necessary so that it can be used as a half width. It is.

As shown in FIG. 3B, each groove G, G ′ group is arranged with a depth T5 of 13 mm out of a thickness T1 of the cement plate 1A of 25 mm, and the thickness of the plate-like portion 1C of the cement plate 1A. T4 is 12 mm.
As shown in FIG. 3 (B), the groove G for inserting the cross joint has a bottom GB having a width wb of 42.8 mm, an opening GF having a width wf of 32.2 mm and closed, and both sides are inclined. The side GS has an inclination angle θ of 60 °.
Further, as shown in FIG. 3A, the width of the groove to the cement board 1A is 45 mm for the thick part a3 on both sides and 40 mm for the central thick part a4, and the ventilation groove G having the opening width a1. 'Is evenly distributed at intervals a2.

[Honeycomb backer (Fig. 2 (B))]
As shown in FIG. 4B, the honeycomb backer 2 is arranged between the end faces of the upper and lower cement plates 1A of the upper and lower connections of the panel 1 at the position where the grooves G and G ′ are present, and the sealing 4 to the horizontal joint dx Is a back-up material that prevents intrusion onto the grooves G and G ′ due to the filling of.
Accordingly, as shown in FIG. 2 (B), a plastic sheet product in which the interval between the front and rear side plates 2S is reinforced by a number of partitions 2P, the height 2h corresponds to the height interval of the horizontal joint dx, and the width 2w is a strip. Corresponding to the width T5 of the grooves G and G ′ group, a tumbling (trade name) made by Ube Nitto Kasei Co., Ltd. as a packing material having a thickness of 12 mm, a width of 1220 mm, and a length of 1820 mm is appropriately lengthened. Cut to height and prepare.

[Cross joint 5 (FIGS. 5 and 6)]
5A is an overall perspective view of the cross joint 5, FIG. 5B is a view as seen from the arrow B of FIG. 5A, and FIG. 5C is an arrow of FIG. 5A. FIG. 6A is a cross-sectional view taken along line XX in FIG. 5A, and FIG. 6B is a vertical cross-sectional view taken along line YY in FIG. 5A. 6C is a cross-sectional view taken along the line ZZ in FIG.
As shown in FIG. 5 (A), the cross joint 5 has horizontal horizontal projections projecting sideways in a form that partitions the upper fitting vertical piece 5F, the lower fitting vertical piece 5F ', and the upper and lower vertical pieces 5F, 5F'. It is a polyacetal resin molded product having a general wall thickness of 3 mm, which includes a contact piece 5M.

The upper and lower vertical pieces 5F and 5F ′ and the left and right horizontal contact pieces 5M are formed in a cross shape and are integrated with a bottom plate 5D whose upper and lower ends are inclined narrowly. 4 (A), with the vertical piece 5F ′ below the cross joint 5 fitted into the groove G of the cement plate 1A of the lower panel 1, the groove G of the upper panel 1 is turned into the upper vertical piece 5F. When fitted, the lower end of the cement plate 1A of the upper panel is abutted and held, and an interval of the vertical width Y2 of the horizontal support piece, that is, an interval of the horizontal joint dx is formed between the upper and lower panels.
Accordingly, as shown in FIG. 5A, the horizontal abutting piece 5M has a bottom plate 5D as a bottom surface, and a side plate 5P having a projection length Z1 of 11.8 mm from the upper edge, the lower edge, and the side edge is continuously provided. In addition, a reinforcing partition piece 5P0 having a width Z4 of 10 mm is also provided at the inner base portion.

The upper and lower fitting vertical pieces 5F and 5F ′ have the same structure and are different in length. As shown in FIG. 5C, the total height Y1 of the cross joint 5 is 100 mm, and the upper vertical piece 5F The length Y3 is 50 mm, the length Y4 of the lower vertical piece 5F ′ is 30 mm, and the vertical width Y2 of the horizontal contact piece 5M is 20 mm.
Further, as shown in FIG. 6 (A), the vertical vertical pieces 5F and 5F ′ are provided with inclined side plates 5S that stand up from the side edges of the bottom plate 5D and whose outer sides are inclined inward, and the upper and lower ends of the inclined side plates 5S are As shown in FIG. 5A, a taper portion 5S ′ inward in the tip direction is formed, and an outer edge t5 of the taper portion 5S ′ is an inclined edge in the direction of the bottom plate 5D toward the tip, and the bottom plate 5D from the middle of the outer edge t5. The upper half of the taper portion 5S ′ is formed in a rib shape that stands up inward from the upper half of the inclined edge of the bottom plate 5D to the inside by the notch 5C in the direction of the vertical plate 5F, 5F. It is the shape which strengthened the tip part of 'with the reinforcement rib.
As shown in FIG. 6A, the inclined side plate 5S itself has an inner surface if standing upright from the bottom plate 5D surface due to moldability, and an inclination of an angle θ (standard: 60 °) is formed by a change in the thickness of the inclined side plate 5S. To do.

Further, in order to suppress the occurrence of distortion of the vertical pieces 5F and 5F 'when the resin is injected into the mold and the resin temperature is lowered to room temperature, it is shown in FIGS. 5 (A) and 6 (B). In this manner, a protrusion piece 5P ′ having a width Z2 of 5 mm and an upper and lower thickness of 1.5 mm is disposed on the inner surface of the bottom plate 5D at the base end of each of the vertical pieces 5F and 5F ′.
The dimensional relationship of the cross joint 5 applied to the embodiment panel 1 of FIGS. 2 and 3 is that the thickness of the horizontal abutment piece 5M and the fitting vertical piece 5F (5F ′) as shown in FIG. 5 (B). Z1 is 11.8 mm, the left and right total length X1 is 75 mm, and the left and right protruding lengths X3 of the horizontal contact piece 5M are 18.5 mm.

  And the vertical piece 5F (5F ') for upper and lower insertions has a cross-sectional outer shape of the base end width, that is, the width on the bottom GB side of the cement sheet groove G, X2 is 38 mm, and the tip width X4 is 28.4 mm. The inclined side plate 5S has an inclination angle θ of 60 °, and is provided with an air communication groove GA having a width X5 of 22 mm surrounded by the inner surface if and the bottom plate 5D surface of the inclined side plate 5S on both sides, as shown in FIG. , (C), the lateral width of the cement plate 1A is slightly adjusted (4.8 mm) into the groove G having a bottom surface width Wb of 42.8 mm, an upper end opening width Wf of 32.2 mm, and a depth T5 of 13 mm. ) And can be inserted.

[Cross joint 6 (FIG. 6D)]
As shown in FIG. 6D, the cruciform joint 6 is obtained by changing the box-shaped horizontal abutment piece 5M of the cruciform joint 5 (FIG. 5) into a plate body 6M. Since the 20 mm box-shaped horizontal abutting piece 5M is a horizontal abutting piece 6M of a plate body whose vertical width Y2 'is 3 mm, the total height Y1' is a total height Y1 of the cross joint 5 by a value of 20 mm-3 mm (17 mm). The upper and lower fitting vertical pieces 6F and 6F ′ have the same size and the same structure as the upper and lower fitting vertical pieces 5F and 5F ′ of the cross joint 5 only by shortening the length (100 mm).
The cross joint 6 is suitable for connecting the upper and lower panel connections so as not to generate the horizontal joint dx width as much as possible, for example, when a balcony is attached to the outer heat insulating outer wall.

[Cross joint 10 (FIG. 7A)]
7A is an overall perspective view of the cross joint 10, and FIG. 7B is a cross-sectional view taken along line BB of FIG. 7A.
The cross joint 10 is an aluminum molded product having a general thickness of 2 mm, and the top ends of the vertical fitting vertical pieces 5F and 5F ′ of the cross joint 5 shown in FIG. Is.
That is, as shown in FIGS. 7A and 7B, the vertical pieces 10F and 10F 'for inserting the cross joint 10 have the inclined side plates 10S on both sides in the form of a straight line and the cross-sectional shape is integrated with the bottom plate 10D. From the base end b10 of the large size (db) to the tip end e10 of the small size (df), the outer surface Of is aligned with the inclination angle θ of the inclined side GS of the cement sheet groove G at an angle θ (60 °). Inclined, the inner surface if is perpendicular to the surface of the bottom plate 10D, and the upper and lower edges ts of the inclined side plates 10S of the vertical fitting vertical pieces 10F, 10F ′ are 10 mm in height from the base end b10 to the tip e10. It is inclined at.

The dimensional relationship of the cross joint 10 is such that the total height Y1 is 100 mm, the height Y3 of the vertical fitting vertical piece 10F is 50 mm, the height Y4 of the vertical fitting vertical piece 10F ′ is 30 mm, and the height of the horizontal contact piece 10M. (Vertical width) Y2 is 20 mm, lateral total length X1 is 75 mm, projection length X3 of each horizontal abutment piece 10M is 18.5 mm, base end width X2 of each vertical piece 10F, 10F 'for insertion is 38 mm, tip The width X4 is 28.4 mm.
Then, as shown in FIG. 7B, the air communication groove GA has a depth GZ of 9 on the inner side of the upper and lower fitting vertical pieces 10F and 10F ′ with the bottom plate 10D surface and the upright flat inner surfaces if on both sides. It is a through groove with the same cross section of 8 mm and width X5 of 24 mm in the top and bottom, and there is no projection that causes air turbulence, and the air communication groove GA that enables smooth air flow is obtained.
Therefore, the upper and lower vertical fitting pieces 10F and 10F 'have the air communication groove GA having the maximum ventilation function, and can be smoothly inserted into the panel groove G by the inclined arrangement of the upper and lower end edges ts. It becomes.

[Cross joint 11 (FIG. 7C)]
7C is an overall perspective view of the cruciform joint 11. The cruciform joint 11 has only a horizontal abutment piece 11M in a box shape with respect to the cruciform joint 10 of FIG. The contact piece is changed to 6M.
That is, as shown in FIG. 7 (C), the cross joint 11 is an aluminum molded product having a general thickness of 2 mm, and the vertical pieces 11F and 11F ′ for the upper and lower insertions have the inclined side plates 11S on both sides and the bottom plate 11D surface. The inner surface if and the outer surface inclined inward from the large base end db to the small df, the upper and lower ends are provided with inclined edges ts inclined in the central direction, and are in horizontal contact The piece 11M is obtained by projecting a plate material on both sides from the inclined side plate 11S.

The dimensional relationship is that the upper fitting vertical piece 11F and the lower fitting vertical piece 11F ′ are the same as those of the cross joint of FIG. 7A, and the box-like shape of the cross joint 10 of FIG. Since the horizontal abutment piece 10M having a vertical width Y2 of 20 mm is made of a plate material having a vertical width Y2 ′ of 2 mm, the total height Y5 (88 mm) is different from the total height Y1 (100 mm) of the cross joint 10 in FIG. Only.
Accordingly, the cross joint 11 is provided with the air communication groove GA that enables smooth air flow, and the cross joint 11 that is easy to fit into the panel groove G by the inclined upper and lower end edges ts, similarly to the cross joint 10. Thus, when a balcony is protruded from the outer wall, it becomes a joint fitting useful for connecting the breathable heat insulating panels 1 up and down while suppressing the occurrence of the space between the horizontal joints dx.

[Formation of outer heat insulating outer wall (Fig. 1)]
By implementing a conventional formwork, which uses the exterior material also as a formwork to form the concrete wall W, the breathable heat insulation panel 1 of the present invention is used as an outer formwork of the concrete outer wall W, and a countersunk bolt insertion hole hb, A formwork of the concrete wall W is constructed with a conventional inner formwork (not shown) through the separator insertion hole hs.
In this case, the parallel connection of each panel 1 is made by abutting and abutting the heat insulating layers 1B, and the phase-deficient connection by the steps d2 ′ (20 mm) and d1 ′ (10 mm) on both sides of the heat insulating layer 1B and the cement board 1A. Then, a vertical joint dy interval is formed between the cement boards 1A.

Further, the vertical connection between the panels 1 is performed by inserting vertical fitting pieces 5F ′ (or 10F ′) below the cross joints 5 (or 10) into the grooves G at both ends of the upper end of the lower panel 1, Between the horizontal contact pieces 5M (10M) of the cross joint 5 (10), as shown in FIG. 1B, the honeycomb backer 2 is extended and arranged, and then the upper panel 1 is connected to the groove G on both sides of the lower end. Is inserted into and locked to the corresponding upper fitting vertical piece 5F (10F) of each cross joint 5 (10).
In this case, since the upper fitting vertical piece 5F (10F) is longer than the lower fitting vertical piece 5F ′ (10F ′) by the phase gap connection step d1 (20 mm) of the panel, the upper panel 1 may be detached. The upper and lower heat insulating layers 1B can be connected and locked in a contact-contact form.
Then, concrete was sequentially cast from the lower floor to the upper floor using the breathable heat insulating panel 1 as an outer mold, and the concrete outer wall W was covered with the outer heat insulating panel 1 as shown in FIG. Construct concrete frame CF.

Further, in the upper and lower connecting portions of each panel 1, as shown in FIG. 1B, the horizontal abutting pieces 5M (10M) are provided between the upper and lower cement plates 1A by the horizontal abutting pieces 5M (10M) of the cross joint 5 (10). ) With a height Y1 (20 mm), the horizontal abutment piece 5M (10M) has a plastic surface with a thickness of around 2 mm as a sealing backup material 3 on the front surface as shown in FIG. A piece is stuck, and as shown in FIG. 4 (B), the sealing 4 is filled in the lateral interval between the front surfaces of the honeycomb backer 2 and the backup material 3 arranged on the groove G layer, thereby forming a horizontal joint dx.
Further, as shown in FIG. 1, the distance between the vertical joints dy between the cement boards 1A caused by the parallel phase chip connection of the panels 1 is as shown in FIG. Since 1B performs the backup function, it simply fills the conventional sealing.

The outer wall W thus obtained is entirely covered with a breathable heat insulating panel 1, and the grooves G and G 'arranged in parallel in each panel are inserted into the cross joint 5 (10). Since all the air communication from the lowermost panel to the uppermost panel is conducted, uniform ventilation (draft ventilation) across the entire panel can suppress heat stress due to solar radiation of the exterior material (panel cement board) and is durable In addition to improving the durability, it is possible to suppress dew condensation in the panel due to ventilation of the entire surface of the panel, and it is possible to suppress interfacial peeling between the cement board 1A and the heat insulating layer 1B due to repeated freezing of internal dew condensation and melting and transpiration, thereby improving durability. .
Therefore, the obtained reinforced concrete building becomes a highly durable outer heat insulating structure, and becomes an energy saving and high quality building.

It is explanatory drawing of the outer wall of this invention, Comprising: (A) is a perspective view, (B) is the B section front view of (A). It is explanatory drawing of the member used for this invention, Comprising: (A) is a panel perspective view, (B) is a honeycomb backer perspective view. BRIEF DESCRIPTION OF THE DRAWINGS It is panel explanatory drawing of this invention, Comprising: (A) is a cross-sectional view, (B) is the elements on larger scale of (A), (C) is a cross joint insertion explanatory drawing in a groove | channel. It is connection state explanatory drawing of the panel of this invention, Comprising: (A) is a longitudinal cross-sectional view of a cross joint connection part, (B) is a horizontal joint explanatory vertical cross-sectional view, (C) is a vertical joint horizontal cross-sectional view. is there. It is explanatory drawing of this invention cross joint 5, Comprising: (A) is a whole perspective view, (B) is the arrow B view of FIG. 4 (A), (C) is the arrow C of FIG. 4 (A). FIG. It is explanatory drawing of this invention cross joint, Comprising: (A) is a XX line cross-sectional view of FIG. 5 (A), (B) is a YY line vertical cross-sectional view of FIG. FIG. 5C is a cross-sectional view taken along the line ZZ in FIG. 5A, and FIG. 5D is a perspective view of the deformed cross joint 6. It is explanatory drawing of the deformation | transformation cross joint of this invention, Comprising: (A) is the whole perspective view of the cross joint 10, (B) is a BB line cross-sectional view of FIG. 7 (A), (C) is. 1 is an overall perspective view of a cross joint 11. It is a prior art figure, (A) is a cross-sectional view of the panel, (B) is a partially enlarged view of FIG. 8 (A), (C) is an overall perspective view of the cross joint, (D) is a diagram It is the DD sectional view taken on the line of 8 (C). It is a prior art figure, (A) is a panel cross joint insertion state explanation cross-sectional view, (B) is a cross joint insertion part vertical cross-sectional view, (C) is a horizontal joint vertical cross-sectional view.

Explanation of symbols

1 Breathable insulation panel (panel)
1A Molded cement board (cement board)
1B Heat insulation layer 1C Plate-like part 1D Thick part 2 Honeycomb backer 2S Side plate 2P Partition 3 Backup material 4 Sealing 5, 6, 10, 11 Cross joint 5B, 6B Lower end piece (lower end rib)
5C, 6C Notch 5D, 6D, 10D, 11D Bottom plate 5F, 6F, 10F, 11F Upper vertical piece (fitting vertical piece, vertical piece)
5F ', 6F', 10F ', 11F' Lower vertical piece (vertical piece for insertion, vertical piece)
5M, 6M, 10M, 11M Horizontal abutment piece 5P, 10P Side plate 5P0 Partition piece 5P ', 6P' Projection piece 5S, 6S, 10S, 11S Inclined side plate 5S ', 6S' Taper part 5T, 6T Upper end piece (upper rib)

A living part
b10, b11 Base end θ Inclination angle (angle)
CF concrete frame dx Horizontal joint dy Longitudinal joint e10, e11 Tip G, G 'Groove GA Air communication groove GB Bottom (groove bottom)
GF opening GS inclined side hb countersunk bolt insertion hole hs separator insertion hole if inner surface Of, Os outer surface S floor slab Sf floor slab surface t5, t6 outer edge (tilted edge)
ts edge (inclined edge)
W Concrete wall (wall, outer wall)

Claims (12)

  Adhesive breathable thermal insulation panel (1) with a molded cement board (1A) having a groove (G, G ') group on its inner surface and a thermal insulation layer (1B) is attached to the wall of a reinforced concrete building (W ) And the upper and lower connections of the breathable thermal insulation panel (1) are provided with horizontal abutment pieces (5M, 6M, 10M, 11M) projecting on both sides, It is equipped with a vertical piece for upper insertion (5F, 6F, 10F, 11F) and a vertical piece for lower insertion (5F ', 6F', 10F ', 11F'), and air communication is provided inside the upper and lower vertical pieces for insertion. Each vertical piece of the cross joint (5, 6, 10, 11) provided with a groove (GA) is connected to the upper panel ( 1) From the groove (G) at the lower end of 1), the upper vertical pieces for insertion are inserted into the opposing grooves (G), An outer heat insulating wall structure of a reinforced concrete building in which upper and lower breathable thermal insulation panels (1) are stretched while maintaining the ventilation function of the opposing grooves (G, G ').   The breathable heat insulation panel (1) has a heat insulation layer (1B) protruding from the cement plate (1A) on the one side with a large dimension (d2 '), entering the small dimension (d1') on the other side, and a large dimension on the upper end. (D2) Projects and enters the small dimension (d1) at the lower end, and the groove (G, G ′) group of the cement board (1A) includes at least the groove (G) at both ends and the central thick part (1D ) Is a trapezoidal cross section with a bottom surface (GB), an inclined side (GS) that faces inward at the left and right equiangles (θ), and an opening (GF) at the upper end. The outer heat insulating wall structure according to claim 1.   The cross joint (5, 6, 10, 11) has a vertical plate (5F, 6F, 10F, 11F) for upper insertion and a vertical plate (5F ', 6F', 10F ', 11F') for lower insertion. 5D, 6D, 10D, 11D), and the upper and lower vertical pieces for insertion are inclined side plates (5S, 6S, 10S) whose cross-sectional outer shape faces inward at the same angle on both sides with the bottom plate (5D, 6D, 10D, 11D). , 11S), and the slope angle (θ) of the outer surface of the inclined side plate is the inclination angle (θ) of the inclined side side (GS) of the groove (G) of the cement plate (1A). And the width (X2) of the outer surface (Os) of the bottom plate is a dimension that can be adjusted to the left and right with respect to the bottom surface (GB) of the groove (G), and the bottom plate of the upper and lower fitting vertical pieces is the cement plate (1A The outer heat insulating wall structure according to claim 1, which is disposed on the bottom surface (GB) side of the groove (G).   At the upper and lower connecting portions of the breathable heat insulating panel (1), the horizontal contact pieces (5M, 10M) of the cross joints (5, 10) define the horizontal joint (dx) interval between the upper and lower molded cement boards (1A), In the horizontal joint (dx) interval between the left and right cross joints (5, 10), a honeycomb backer (2) having the same height as the vertical width (Y2) of the horizontal abutting piece (5M, 10M) is provided in the groove (G , G ′) The outer heat insulating wall structure according to claim 1, 2, or 3, wherein the outer insulating wall structure extends between the upper and lower panels (1) and guarantees the ventilation function of the mutually opposing grooves (G, G ′) group.   The backup material (3) is stuck on the exposed outer surface (Os) at the horizontal joint (dx) interval of the cross joints (5, 10), and the honeycomb backer (2) and the front surface of the backup material (3) are sealed (4) The interactive heat wall structure according to claim 4, wherein a transverse joint (dx) is formed by filling   The inclined side plates (5S, 6S, 10S, 11S) are inclined inwardly at equal angles (θ) with the bottom plate as the bottom surface from both side edges of the bottom plate (5D, 6D, 10D, 11D) in the vertical direction. Standing up in a trapezoidal shape with the upper end open, it constitutes vertical pieces (5F, 6F, 10F, 11F) for upper insertion and vertical pieces (5F ', 6F', 10F ', 11F') for lower insertion, and inclined on both sides The inside surrounded by the side plates (5S, 6S, 10S, 11S) and the bottom plate (5D, 6D, 10D, 11D) is an air communication groove (GA) communicating in the vertical direction, and both side inclined side plates (5S, 6S, The cross joint used in the invention according to claim 1, wherein horizontal abutting pieces (5M, 6M, 10M, 11M) are provided on both sides from the middle of 10S, 11S).   The horizontal abutment pieces (5M, 10M) are in the form of a box of bottom plates (5D, 10D) having a vertical width (Y2) for forming horizontal joints (dx) and side plates (5P, 10P) standing from the edge of the bottom plate. The cross joint according to claim 6.   The cross joint according to claim 6, wherein the horizontal abutting piece (6M, 11M) is a plate.   The upper and lower vertical fitting pieces (5F, 5F ′, 6F, 6F ′) are provided with tapered portions (5S ′, 6S ′) in which the inclined side plates (5S, 6S) are sandwiched between the upper and lower ends in the distal direction. The cross joint according to claim 6, wherein an air communication groove (GA) is formed by a notch (5C, 6C) of 5S ', 6S').   The outer edges (t5, t6) of the tapered portions (5S ′, 6S ′) are inclined edges in the direction of the bottom plate (5D, 6D) toward the tip, and are for reinforcement by notches (5C, 6C) at the upper and lower ends. The cross joint according to claim 9, wherein an upper end piece (5T, 6T) and a lower end piece (5B, 6B) are formed.   In the inclined side plates (10S, 11S) on both sides, the outer surface (of) and the inner surface (if) are flat surfaces from the upper end to the lower end, and the cross-sectional shape is from the base end (b10, b11) having a large size (db). It has a tapered shape toward the tip (e10, e11) of small size (df), and the upper and lower end edges (ts) are inclined in the central direction from the bottom plate (10D, 11D) side to the tip (e10, e11). The cross joint of claim 6.   The length (Y3) of the upper fitting vertical piece (5F, 6F, 10F, 11F) is larger than the length (Y4) of the lower fitting vertical piece (5F ′, 6F ′, 10F ′, 11F ′). The cross joint according to any one of claims 6 to 11, which has a size.

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