JP4326560B2 - Outer wall structure in which balcony is projected with cantilever support, method for constructing outer wall, and non-combustible heat insulating block to be used - Google Patents

Description

  INDUSTRIAL APPLICABILITY The present invention relates to an outer wall structure in which balconies, fences, outer corridors, etc. (hereinafter referred to as balconies) are projected in a cantilevered floor slab form in a reinforced concrete external heat insulating building, a method for constructing the outer wall, and an outer wall construction It relates to a non-combustible heat insulating block in which a connecting bar (hereinafter referred to as a Z bar) is firmly held, and belongs to the technical field of architecture.

  Reinforced concrete exterior thermal insulation buildings are coated with a thermal insulation layer on the outside of the concrete frame, so that the thermal stress on the solar concrete frame can be minimized, preventing cracks in the concrete frame, and the concrete frame in contact with the air. Therefore, the neutralization of concrete can be suppressed, the corrosion of reinforcing steel bars can be prevented, the durability of the building can be improved, the temperature environment in the building can be maintained, and there is little condensation, mold and mites. It has been evaluated as an energy-saving high-performance building because it can suppress the occurrence of water and maintain an excellent living environment in terms of health.

  However, in an external insulation building that forms reinforced concrete floor slabs such as balconies and outer corridors protruding from the outer wall of the building, the reinforced concrete floor slab tends to be a thermal bridge to the building frame. Suppression of the thermal bridge action from the balcony floor slab to the concrete frame is strongly desired, and as a means for solving this problem, the conventional example 1 shown in FIG. 7 and the conventional example 2 shown in FIG. 8 have already been proposed. ing.

  Conventional example 1 shown in FIG. 7 is cited as a conventional example in Patent Document 1, and as shown in FIGS. 7 (B) and (C), a large number of long connected reinforcing bar groups are provided on the heat insulating material. In parallel with the skewered form, a rebar group for compression is placed between the long connected rebars at the bottom of the heat insulating material, and the bearing plates at both ends of each compression rebar are projected from the heat insulating material, and each lattice is used for compression. A rebar unit for reducing a thermal bridge, which is arranged in the vicinity of a reinforcing bar and extends in parallel between the long connecting reinforcing bars on the top of the heat insulating material, with both side extended portions of the lattice reinforcing bars, and the reinforcing bar unit is shown in FIG. As shown in Fig. 5, the concrete is placed between the balcony form and the dwelling unit form and placed in concrete, and the concrete balcony is supported by the reinforcing bar unit.

Further, Conventional Example 2 shown in FIG. 8 is an invention that is the subject of Patent Document 1, and when the reinforcing bar unit of Conventional Example 1 is placed in the housing frame, the reinforcing bars arranged on the housing unit side are This solves the problem that the connecting reinforcing bars of the reinforcing bar unit for reducing the thermal bridge cannot be arranged. As shown in FIG. 8 (C), the upper notch groove group and the lower notch groove group are provided on the heat insulating material. As shown in FIG. 8 (B), a heat insulating material is arranged at the base end of the balcony mold, and the connecting reinforcing bars are connected to the housing frame from the balcony mold through the upper notch groove group of the heat insulating material. Inserted into the lower form notch groove of the heat insulating material, the reinforcing bar mounting jig group of cylinders with a pressure bearing plate at both ends, placed in the form of a transfer to the formwork, and the reinforcing bar mounting jig group Insert the connecting reinforcing bar group from between the bar arrangements placed in the formwork, and fix the screws to the reinforcing bar mounting jig, as shown in Fig. 8 (A). As is for setting concrete balcony mold frame and the dwelling unit building frame-body mold.
JP 2005-188036 A

In Conventional Example 1 in FIG. 7, as described in Patent Document 1 (Japanese Patent Laid-Open No. 2005-188036), since many connecting reinforcing bars are attached to the heat insulating material, the shape becomes bulky and complicated. There is a problem that efficient transportation and storage are not possible.
In addition, horizontal projections such as balconies vary in size and shape, and it is impossible to prepare all the corresponding reinforcing bar units, and the reinforcing bars arranged on the side of the housing unit are in the way. This is a complicated work that requires time and effort to arrange and fix the reinforcing bar unit for reducing the thermal bridge, and the work of assembling the reinforcing bars in the balcony mold and the housing frame is complicated, and the workability is poor.

In Conventional Example 2 (FIG. 8), a connecting reinforcing bar group connecting the balcony floor slab and the housing for housing is arranged in the upper notch groove group of the heat insulating material. In order to counter the tensile stress caused by the above, a large number of parallel arrangements are necessary. When the upper connecting reinforcing bar group is aligned with the balcony floor slab reinforcement, the upper connection to the dwelling unit that has more reinforcement than the balcony floor slab reinforcement. Reinforcing bars are not only excessively arranged in strength, but also interfere with the arrangement of the reinforcing bars.
In addition, as shown in FIG. 8B, since it is necessary to arrange the reinforcing bar mounting jig upward so as not to interfere with the balcony bottom bar, the stress center distance between the upper connecting bar and the lower connecting bar becomes small, The drag (tensile force, compressive force) of the balcony is reduced, and the balcony floor slab thickness is increased in terms of strength maintenance.

Further, the lower connecting reinforcing bars are screwed into the reinforcing bar attaching jigs between the reinforcing bars in the housing frame, so that the work is complicated.
In addition, the upper notch groove group and the lower notch groove group of the heat insulating material have gaps formed in the marks where the respective connecting reinforcing bar groups and the respective reinforcing bar mounting jigs are inserted, and the gaps in the notch groove groups of the heat insulating material are formed. When concrete is filled, the cast concrete continues between the balcony and the concrete frame, and the heat insulating function as the outer heat insulating concrete frame is locally reduced.

In both Conventional Example 2 (FIG. 8) and Conventional Example 1 (FIG. 7), a thermal bridge reducing reinforcing bar unit is arranged on the boundary surface between the balcony floor slab and the dwelling unit frame, and the concrete outer wall is constructed after the concrete frame is constructed. There is a problem that the application method is limited because it is for an outer heat insulating building of a post-pasting method in which a heat insulating material is stuck to the top.
The present invention rationally solves or improves the problems of the conventional examples 1 and 2, and the reinforced concrete balcony is rationally constructed in a cantilever support form and in a form in which a thermal bridge is suppressed. It is an object of the present invention to provide a novel outer heat insulating outer wall structure, a method for constructing the outer wall, and a non-combustible support block that enables rational construction.

The invention of the outer heat insulating outer wall structure of the present application is an outer wall structure in which a reinforced concrete balcony is projected with a cantilever support from a reinforced concrete outer heat insulating outer wall as shown in FIG. 1, for example, and the concrete outer wall W is shown in FIG. The insulating floor 2B is covered with a moisture-permeable exterior panel 2A and covered with a moisture-permeable composite panel 2, and the balcony floor slab SB is thermally insulated from the concrete outer wall W by the heat-insulating layer 2B. protrudes in a form that, one且, Ri consists not燃断heated material, thickness Y4 is a the same thickness as the thickness T3 of the heat insulating layer 2B of the composite panel 2, to for fitting notch H1 of the heat insulating layer 2B, the heat insulating layer of Z muscle 1 through the 2B and vacuum-tight manner fitted to have non retardant support block 4, one of the projecting portions AP in concrete skeleton in CF, integrating other protrusions BP in the balcony in the floor slab SB Fastened, balcony floor Love SB is obtained by projecting in cantilevered from the concrete outer wall W.

In this case, if the non-combustible support block 4 can hold the Z-strip 1 and is fitted into the heat-insulating layer 2B, the non-combustible support block 4 has the same function as the heat-insulating layer 2B in terms of the heat-insulating layer, and the Z-strip 1 What is necessary is just to give fireproof function to the rock cell board (Fuji Kasei Kogyo Co., Ltd., trade name) of calcium carbonate foam plate, para board (Paramount Glass Industry Co., Ltd.) Product name) and lock board (Nitto Boseki Co., Ltd., product name) can be used.
And, as the heat insulating layer 2B of the panel 2, a foamed plastic heat insulating plate (thermal conductivity: 0.024-0.037 kcal / mh ° C., moisture permeability resistance: 25-7.1 m ² hmmHg / g) of JIS A9511 is adopted. If a calcium carbonate foam plate (thermal conductivity: 0.032 kcal / mh ° C., moisture permeability resistance: 26.3 m ² hmmHg / g) is used as the non-combustible heat insulating material 4B, the non-combustible material fitted in the heat insulating layer 2B The heat insulating material 4B becomes a part of the heat insulating layer 2B.

The exterior base material 2A is preferably a light thin rigid plate that can withstand a concrete frame, satisfies the strength and impact resistance of the outer wall as an exterior base material, and has a low moisture permeability resistance. Is a 12mm thick magnesium cement board (moisture resistance:
14 m ² hmmHg).
In this case, the concrete outer wall W having a thickness of 180 mm has a moisture permeability resistance of 126 m ² hmmHg, and the moisture permeability resistance of the foamed plastic heat insulating layer (extruded polystyrene foam) 2A of JISA9511 is 52.5 m ² hmmHg. The concrete outer wall W covered with the panel 2 has a structure in which moisture in the building is released in a route of indoor → concrete outer wall W → heat insulating layer 2B → exterior base material 2A → outside air.

In addition, the Z-strand 1 of the present invention is a structure in which a plurality of connecting bars are integrally assembled while maintaining a center-to-center distance in the vertical direction, and exhibits a strong tensile resistance and bending resistance. FIG. 4 shows a truss assembly in which the Z upper bar 1U and the Z lower bar 1D are integrated with a Z truss bar 1M having intermediate inclined portions 1S on both front and rear sides while maintaining a center-to-center distance L15. It is a connected bar.
Incidentally, the Z truss muscle 1M can adopt a form of a locust muscle other than the C-shaped curved muscle of FIG.

Accordingly, since the outer wall structure of the present invention has a strong support force for the Z-strip 1, the cantilever at the Z-strip 1 of the balcony floor slab SB having a depth LB of 1500 mm and a thickness TB of 180 mm shown in FIG. Support is possible by arranging the Z bars 1 at large intervals (standard: 450 mm), and the bar arrangement work when constructing the balcony floor slab is much easier than in the conventional examples 1 and 2.
Moreover, since the Z reinforcement 1 is held by the non-combustible support block 4, even if the heat insulating layer 2B of the composite panel 2 covering the concrete outer wall W burns in the event of a fire, the strength deterioration of the Z reinforcement 1 is not Being able to prevent, the balcony floor slab SB becomes fireproof.
Further, if the protrusion AP to the concrete frame CF side of the Z bar 1 is bent at a right angle, the protrusion AP can be fixedly held in the concrete wall W, and the protruding vertical position of the balcony floor slab SB is free. It becomes.

  Since the balcony floor slab SB protrudes by being thermally cut off from the concrete outer wall W, the thermal bridge action of the concrete of the balcony floor slab SB → the concrete of the outer wall W is only the support Z-strip 1 and is a concrete unit. Since the total cross-sectional area of the used Z-bar 1 per cross-sectional area is extremely reduced from the total cross-sectional area of the connecting bars used in the conventional examples 1 and 2, the thermal bridge action is higher than that of the conventional examples 1 and 2. Is extremely reduced.

  Therefore, in the outer wall structure of the present invention, in a highly durable, outer heat-insulated reinforced concrete building in which the outer wall W of the concrete is heat-insulated with a moisture-permeable panel, the concrete balcony B that can extremely reduce the thermal bridge action is Since it can protrude from a desired position on the outer wall W in a support-supported form, it is possible to provide an energy-saving, high-quality concrete building in which the layout of the balcony B can be freely designed.

And since the composite panel 2 which coat | covers the concrete outer wall W with external heat insulation is a moisture-permeable type panel, as an exterior material attached to the surface of exterior exterior material 2A (moisture permeability resistance: 14m < ² > hmmHg), exterior exterior Applying a moisture-permeable waterproof multi-layer coating agent (trade name: New Topless Screen (JIS A6909), etc., SK Chemical Research Co., Ltd.), which has a moisture permeability smaller than that of the material 2A, suppresses internal dew condensation and mold. It provides an outer wall structure that is excellent in sanitary environment, in which the occurrence of ticks is suppressed.

In the invention of the outer wall structure, the non-combustible support block 4 through which the Z-strip 1 penetrates has a thickness Y4 that is the same as the thickness T3 of the heat insulating layer 2B of the composite panel 2, and the heat insulating layer 2B to fit wear cut-H1, Check-tightly fitted and the heat insulating layer 2B Rukoto are also an essential requirement.
In this case, as shown in FIG. 5, the incombustible support block 4 is formed with a width X4 slightly smaller (standard: 10 mm) than the width W4 (standard: 60 mm) of the fitting notch H1, and fitted with the heat insulating layer 2B. If the gap follower sheet 12A having a thickness of 2 mm is attached to both side surfaces 4S when fitted into the notch H1, the nonflammable support block 4 can be easily fitted, and the gap follower sheet 12A expands over time. It becomes airtight fitting of the non-combustible support block 4.
And as the gap follow-up sheet 12A, Sekisui Chemical Co., Ltd. Softlon (trade name) or Ilbrook (Germany) Ilmond (trade name) may be employed.

In addition, the gap following sheet 12A is typically disposed at the front and rear side ends and the upper end on both side surfaces 4S of the incombustible heat insulating material 4B as shown in FIG. 4A, for example.
Accordingly, the non-combustible support block 4 is integrally arranged in the heat insulating layer 2B as if it is a continuous layer of the heat insulating layer 2B, and the gap between the heat insulating layer 2B and the non-combustible support block 4 becomes a sealed air layer, By exhibiting the function of the heat insulating layer, the heat insulating function of the covering heat insulating layer 2B with respect to the concrete frame CF (concrete outer wall W) due to the insertion of the non-combustible support block 4 does not occur.

In addition, as shown in FIG. 2, the non-combustible support block 4 includes a Z upper end 1U and a Z lower end 1D, a central horizontal upper side 1U ', an intermediate inclined part 1S inclined and lowered on both sides, and horizontal lower side parts 1D on both sides. It is preferable that the Z truss 1 that is integrated vertically with the stress center distance L15 is held in an airtight manner by the Z truss bar 1M provided with '.
In this case, it is preferable that the intermediate inclined portion 1S of the Z truss muscle 1M has an inclination angle of 45 °.
Further, the diameter, length, and stress center distance L15 of the Z upper bar 1U and the Z lower bar 1D may be determined by the structural calculation of the balcony floor slab SB to be applied. From the viewpoint of concrete fixing strength, that is, from the viewpoint of structural calculation, a deformed steel bar having the same diameter is preferable.

Further, for example, as shown in FIG. 4, the non-combustible heat insulating material 4B for the non-combustible support block is divided into two and the Z-strip 1 is fitted to the symmetrical inner surface 4D of each divided piece 4B ′. If the grooves H2, H2 ′, H3 are arranged, the Z-strip 1 is provided with a clearance follower sheet 12A on both front and rear sides, fitted into the Z-strip fitting groove, and each divided piece 4B ′ is bonded and integrated again, Due to the diametrical expansion of the gap following sheet 12A, the gap between the Z line 1 in the incombustible support block 4 and the fitting grooves H2, H2 ′, H3 cannot be vented, and the Z line 1 is airtight in the noncombustible support block 4. Can be fixed and held.
Then, the Z upper end muscle 1U counters the tensile stress, the Z lower end bar 1D counters the compressive stress, and the Z truss bar 1M has a 45 ° intermediate inclined portion 1S, so that the tensile stress and the compressive stress are reduced. In order to counteract the shearing stress generated at the working interface, it exerts a strong supporting force in combination with the existence of the center-to-center distance between the Z upper end muscle 1U and the Z lower end muscle 1D.

Accordingly, the non-combustible support block 4 holds the Z-strand 1 having a strong support force, and the arrangement of the non-combustible support block 4 on the panel heat insulating layer 2B can be made at a large interval (standard: 450 mm). , 2 can be far more rational than the arrangement of connecting bars.
In addition, since the Z line 1 is held in an airtight manner in the non-combustible support block 4, the space around the Z line 1 in the non-combustible support block 4 functions as an air insulating layer, and the non-combustible support block 4 itself The heat insulating function for the concrete outer wall W is not impaired.

  In addition, the invention of the construction method of the outer wall uses the moisture permeable composite panel 2 in which the moisture permeable exterior base material 2A is layered and integrated with the foamed plastic heat insulating layer 2B. When the composite panel 2 is the outer wall formwork F0 and the balcony floor slab SB projecting wall portion, the exterior base material 2A of the composite panel 2 is arranged from the upper end to the balcony floor slab as shown in FIG. A cutout H1 extending over the cut height 4h is formed at the arrangement position of the non-combustible support block 4 at the position where the non-combustible support block 4 is arranged to interfere with the base end Bb of the SB, and the outer wall formwork F0 is formed. Non-combustible, in which the Z upper end muscle 1U and the Z lower end muscle 1D are integrated with the Z truss muscle 1M while maintaining the center distance L15 in the vertical direction through the non-combustible heat insulating material 4B. The support block 4 is fitted and fixed, and one protrusion of the Z-strip 1 P is placed in the concrete frame-side formwork FA, and the other protrusion BP is placed in the balcony floor slab formwork FB to form a conventional formwork. By placing the concrete into the formwork, the concrete outer wall W The balcony floor slab SB is projected in a cantilevered form.

  In this case, the composite panel 2 for a general wall typically has a heat insulation layer 2B having a thickness (T3) of 75 mm, a width (BW) of 900 mm, and a height of 1 h of a floor height (standard: 2700 mm). A polystyrene cement foam (Nittobo Co., Ltd.) with an exterior base material 2A having a thickness (T2) of 12 mm, a width (AW) of 900 mm, and a height of a heat insulation layer height of 1h-20 mm (2680 mm). As shown in FIG. 3, the heat insulating layer 2B and the exterior base material 2A are shifted by 10 mm in the width direction, and the heat insulating layer 2B protrudes 40 mm at the upper end in the height direction, as shown in FIG. It is a layered dress with a 20 mm depth at the bottom.

Moreover, the processed composite panel 2 for constructing a balcony is obtained by cutting only the upper and lower sides of the composite panel 2 for a general wall. Typically, heat insulation is obtained by cutting off the exterior base material 2A at the upper part of the panel 2. The exposed height 4h of the layer 2B is 200 mm, the lower surface Sd of the balcony floor slab SB is in contact with the upper end of the exterior base material 2A, and the lower end surface of the panel 2 is flat.
Further, the Z muscle 1 is a truss structure muscle in which the Z upper end muscle 1U and the Z lower end muscle 1D maintain a sufficient center-to-center distance L15 (standard: 92 mm), has a high support strength, and has a large interval (standard: 450mm) is possible.

  In the construction method of the present invention, the composite panel 2 for a general wall and the processed composite panel 2 for a balcony, which are factory-produced products, are formed in a conventional formwork as shown in FIG. If it is used as an outside disposal frame and the non-combustible support block 4 which is a factory-produced product is fitted and fixed to a fitting notch H1 arranged at a large interval at the upper end of the processed composite panel 2 standing as an outside wall mold , Z-bar 1 can be placed, balcony floor slab formwork, concrete outer wall formwork, living section floor slab formwork, and after placing the concrete into each formwork, balcony floor slab The SB can be constructed from the concrete outer wall W in a form in which the heat insulation is performed between the heat insulating layer 2B of the composite panel 2 and the nonflammable heat insulating material 4B of the nonflammable support block 4.

Accordingly, since the Z bars 1 can be arranged at a large interval and the number of arrangements is small, the workability is significantly improved as compared with the bar arrangement work in the conventional examples 1 and 2, and the new and high quality of claim 1. Can be reasonably constructed.
In addition, the processed composite panel 2 has the exposed concrete contact area of the balcony floor slab SB exposed by the heat insulating layer 2B, and the exterior base material 2A does not come into layer contact with the cast concrete. It is possible to use various thin and rigid plates that are inferior in function by placing concrete, such as a magnesium cement plate, and the degree of freedom in selecting the exterior base material 2A in the manufacturing process of the composite panel 2 is improved. .

In addition, the non-combustible support block 4 used in the invention of the construction method is, for example, as shown in FIG. It is preferable that the fitting is fixed to H1.
In this case, as shown in FIG. 4 (A), typically, the non-combustible heat insulating material 4B has a width X4 smaller than the width W4 (standard: 60 mm) of the fitting notch H1. (X4 standard: 50 mm), and a non-combustible support block by sticking a gap following sheet 12A (standard: 2 mm thickness) to the upper edge, front edge, and rear edge of both side surfaces 4S of the nonflammable heat insulating material 4B. 4 is inserted into the fitting notch H1, the fitting operation is easy, and after insertion, both side surfaces 4S of the non-combustible support block 4 are air-tightly sealed with both sides of the heat insulating layer 4B due to the time-dependent expansion of the gap following sheet 12A. It will be a stop fit.
And when the non-combustible support block 4 is air-tightly sealed in the fitting notch H1, the air layer in the gap between the non-combustible support block 4 and the heat insulating layer 2B also functions as an air-insulating layer in a sealed form. Loss of thermal insulation function due to fitting is avoided.

  In the construction method, as shown in FIGS. 3 (B) and 5 (A), a seating groove 2G extending over the thickness T3 of the heat insulating layer 2B is arranged at the upper end of the heat insulating layer 2B of the composite panel 2. In addition, the T-joint 7 having the horizontal blade 7F and the vertical blade 7W having the nail hole H7 at the time of the concrete mold frame, the horizontal blade 7F is used as the seating groove 2G, and the vertical blade 7W is used as the back surface Br of the heat insulating layer 2B. It is preferable to nail to the heat insulation layer 2B.

In this case, the seating groove 2G may be the same size as the thickness of the horizontal blade 7F, and the T-shaped joint 7 may be a heat-insulating plastic molded product having a thickness of 3 mm.
If the adhesive tape 12B is disposed on the lower surface of the horizontal blade 7F, the T-joint 7 can be attached easily.
Then, if the T-joint 7 is fixed to the upper end of the composite panel 2 and concrete is placed, the lower vertical blade 7W of the T-joint 7 is formed on the living part floor slab SA as shown in FIG. Since it is secured by concrete, the vertical blade 7W on the upper side of the T-joint 7 performs the positioning function and the fixing function of the lower end of the processed composite panel 2 during the upper and lower connection arrangement work of the processed composite panel 2 on the upper floor. This makes it easier to work with formwork.

In the T-joint 7, as shown in FIG. 5A, the upper vertical blade 7W is particularly preferably provided with a bolt insertion hole H7 ′.
In this case, as shown in FIG. 2 (B), when the upper floor wall formwork is constructed, the heat insulation layer rear surface Br of the upper floor processed composite panel 2 is brought into contact with the vertical blade 7W on the upper side of the T-joint 7. The panel 2 and the upper vertical blade 7W can be fixed to the nail hole H7 by the penetration of the bolt 14B penetrating the panel 2 into the bolt insertion hole H7 'and fixed to the outer wall W by the heat insulating anchor 14A. The fixed position of the processed composite panel 2 as the wall mold F0 can be ensured.

  The incombustible support block 4 used in the outer wall construction method according to claim 6 of the present application is a rectangular cube incombustible heat insulating material 4B having a height Z4, a thickness Y4 and a width X4, as shown in FIG. On the symmetrical inner surface 4D of each non-combustible heat insulating material piece 4B 'in a form divided into left and right in the non-combustible heat insulating material piece 4B', the fitting grooves H2, H2 ', H3 of the Z line 1 are arranged symmetrically, and the upper end of the Z A Z-strand 1 obtained by joining and integrating the streaks 1U and the Z lower-end streaks 1D with a Z truss bar 1M while maintaining a center-to-center distance L15 is fitted into the fitting grooves H2, H2 ', H3, and nonflammable heat insulation on both sides. A piece of material 4B ′ is bonded and integrated with a symmetrical inner surface 4D.

In this case, the non-combustible heat insulating material 4B typically employs a calcium carbonate foam plate lock cell board (Fuji Kasei Kogyo Co., Ltd., trade name).
The non-combustible heat insulating material 4B has a thermal conductivity of 0.032 kcal / mh ° C. (plastic heat insulating material is 0.024 to 0.037 kcal / mh ° C.) and a moisture permeability resistance of 26.3 m ² hmmHg / g (plastic heat insulating material). The material is 25 to 7.1 m ² hmmHg / g) and the compressive strength is 1.8 kgf / cm ² (the plastic heat insulating material is 0.5 to 2.0 kgf / cm ² ), which is almost equivalent to the plastic heat insulating layer 2B. Since it has physical properties and is nonflammable, it can be suitably employed in a fitting embedded form in the heat insulating layer 2B of the panel 2.

  Further, the height Z4 of the incombustible heat insulating material 4B is the same as the exposed height (cutting height of the exterior base material 2A) 4h (standard: 200 mm) at the upper end of the heat insulating layer 2B of the panel 2, and the thickness Y4 is The heat insulation layer thickness T3 (standard: 75 mm) of the processed composite panel 2 is the same dimension, and the width X4 can be fitted into the width W4 (standard: 60 mm) of the fitting notch H1 of the heat insulation layer 2B of the panel 2. (Standard: 50 mm) is sufficient.

  Also, the non-combustible heat insulating material piece 4B ′ is divided into two incombustible heat insulating materials by dividing one non-combustible heat insulating material 4B having a width X4 (standard: 50 mm) into two equal widths X2 (25 mm). As shown in FIG. 4 (B), fitting grooves H2, H2 ′, and H3 for fitting the central portion of the Z-strip 1 to each cut inner surface 4D of the piece 4B ′ are, for example, table type It may be formed with a polystyrene foam cutter (Sakaguchi Electric Heat Co., Ltd., trade name), or a non-combustible heat insulating material piece 4B provided with plane-symmetric fitting grooves H2, H2 ′, H3 using a mold having a desired form. 'May be prepared as a molded product.

Further, the Z-stripe 1 only needs to be fixedly held by the non-combustible support block 4, and when integrating the non-flammable heat-insulating material pieces 4B ', the inner diameter dimensions of the fitting grooves H2, H2', and H3 are set to the Z-stripe. 1 may be fixed to the fitting groove with an adhesive, and both non-combustible heat insulating material pieces 4B ′ may be fixed to the inner surface 4D. However, the fitting grooves H2, H2 may be used. The inner diameter dimension of ', H3 is 5 to 6 mm larger than the Z-strip 1 diameter, and the gap tracking sheet 12A having a thickness of 2 mm is wound around the Z-strip 1 and the both non-combustible heat insulating material pieces 4B' are bonded and integrated. Above preferred.
In addition, in order to obtain a strong fixing force with the concrete, the Z reinforcement 1 is preferably a deformed steel bar. If a rust-prevention paint is applied in advance over the entire length, the Z reinforcement 1 in the concrete Corrosion of the muscle 1 can also be suppressed and the durability of the Z muscle is improved.
In this case, if a fireproof paint is applied in advance to the portion located in the non-combustible support block 4 of the Z line 1, the fire resistance of the Z line 1 is further improved by the non-combustible heat insulating material 4B and the fireproof paint. .

Therefore, the incombustible support block 4 of the present invention is manufactured as a factory-produced product using the non-combustible heat insulating material piece 4B ′ manufactured in the factory in a predetermined homogeneous form from the Z-strip 1 manufactured in the factory in a predetermined size and shape. Therefore, the cantilevered balcony B constructed with the non-combustible support block 4 can be prepared as a product with uniform dimensions and functions, streamlined construction of a fire-resistant balcony floor slab SB, Will be.
Since the Z top 1 itself maintains the center distance L15 (standard: 92 mm) and integrates the Z upper end 1U and the Z lower end 1D, the Z upper end 1U and the Z lower end 1D are also strengthened. And 3.64 times the support strength can be demonstrated in calculation.
Moreover, since the non-combustible support block 4 is formed by integrating the light non-combustible heat insulating material 4B into the Z-strip 1, it can be easily transported and stored, and can be handled as a product and deployed to the construction site. .

Further, in the invention of the non-combustible support block 4, as shown in FIG. 2, the Z truss bar 1M has a Z at the central horizontal upper side 1U ′ at the lower surface of the Z upper bar 1U and at both horizontal lower sides 1D ′. It is preferable that the upper surface of the lower end reinforcement 1D is fixedly integrated with each other, and the both side intermediate inclined portions 1S are each at an included angle of 45 ° with respect to the Z lower end reinforcement 1D.
In this case, the Z upper muscle 1U mainly resists the tensile stress, and the Z lower muscle 1D opposes the compressive stress, but the Z truss 1M has an inclination angle (an included angle) of 45 °. It suitably copes with the shear stress action at the working interface with the compressive stress.

The truss assembly of the Z muscle 1 is a form in which the horizontal upper side 1U ′ and the horizontal lower side 1D ′ of the Z truss 1M are in contact with the Z upper end 1U and the Z lower end 1D. The distance L15 between the center and the upper surface of the Z lower bar 1D (standard: 70 mm), that is, the distance between the upper surface of the horizontal upper side 1U ′ and the lower surface of the horizontal lower side 1D ′ of the Z truss 1M Easy to set.
Moreover, since the Z truss bar 1M has a left-right symmetric configuration, if the left and right protrusions AP, BP are symmetric, the left and right direction of the Z bar 1 can be applied when manufacturing the incombustible support block 4. This makes it possible to handle the Z-strip 1 conveniently.
Therefore, it is possible to rationalize the production of the Z-stripe having a strong support force, the maintenance management, and the production of the incombustible support block.

Further, as shown in FIG. 4, the Z-strip 1 is wound around the gap follower sheet 12 </ b> A from the front surface F <b> 4 and the rear surface B <b> 4 of the non-combustible heat insulating material 4 </ b> B into the non-combustible heat insulating material 4 </ b> B to fit the fitting grooves H <b> 2, H <b> 2 ′, It is preferable to fit and hold the fireproof sealing 13 from the front face F4 and the rear face B4 of the fitting grooves H2, H2 ′, H3 to the gap following sheet 12A.
In this case, the clearance follower sheet 12A typically employs a softlon (Sekisui Chemical Co., Ltd., trade name) having a thickness of 2 mm and a width of 20 mm, and the clearance follower sheet 12A is made of the non-combustible heat insulating material 4B. What is necessary is just to wind around the Z line | wire 1 in the position which entered about 4 mm from the front surface F4 and the rear surface B4.

  Therefore, the Z-strip 1 is fixed in close contact with the fitting grooves H2, H2 ′, H3 by the time-dependent expansion of the gap following sheet 12A in contact with the air, and a space between the front and rear gap following sheets 12A is a sealed air layer. The outside of the gap following sheet 12A exhibits heat insulation, and the fire resistance of the Z-strand 1 is also guaranteed by filling the fireproof sealing 13, and the non-combustible support block 4 is inserted into the heat insulation layer 2B of the processed composite panel 2 and used. However, it exhibits a sufficient heat insulating function and ensures the fire resistance of the Z-strip 1.

In the non-combustible support block 4, the non-combustible heat insulating material 4B has a width X4 smaller than the width W4 of the fitting notch H1 of the composite panel 2 and a thickness Y4 of the composite panel 2 as shown in FIG. It is convenient that the heat insulation layer thickness T3 is the same size, and the height Z4 is the same size as the depth 4h of the fitting notch H1.
In this case, if the width X4 of the incombustible heat insulating material 4B is smaller than the width W4 of the fitting notch H1, it is easy to fit the incombustible support block 4 into the composite panel 2 at the time of formwork.

Then, for the fitting notch H1 having a standard width W4 of 60 mm, a nonflammable heat insulating material 4B having a standard width X4 of 50 mm is provided on both side surfaces 4S as shown in FIG. If the sheet 12A is stuck and inserted, the incombustible support block 4 can be easily inserted into the fitting notch H1, and the incombustible support block 4 is expanded by the expansion of the gap following sheet 12A for 1 to 2 hours after the insertion. It becomes close fitting insertion fixation of an airtight form to the fitting notch H1.
Then, as shown in FIG. 4A, if the gap follower sheet 12A is disposed on the front edge, the rear edge, and the upper edge of the both side surfaces 4S of the incombustible heat insulating material 4B, the space between the incombustible heat insulating material 4B and the panel heat insulating layer 2B. The gap becomes an air heat insulating layer sealed at the front and rear end edges and the upper end edge, and the composite panel 2 has the fitting notch H1 in the heat insulating function surface even if the non-combustible support block 4 is inserted into the heat insulating layer 2B. The panel having only the heat insulating layer 2 </ b> B that does not exist, and the balcony floor slab SB can be constructed in a structure simply disposed on the composite panel 2.

In the outer heat insulating outer wall structure of the present invention, the reinforced concrete balcony floor slab SB is thermally cut off from the reinforced concrete outer wall W by the heat insulating layer 2B, so that the concrete of the balcony floor slab SB and the concrete on the concrete frame side are provided. The outer wall structure can block the thermal bridge action and suppress the thermal bridge action.
And since Z line | wire 1 which hold | maintains the balcony floor slab SB in the cantilever support form is hold | maintained in the heat insulation layer 2B by the nonflammable support block 4, it does not deteriorate by combustion of the heat insulation layer 2B at the time of a fire. It becomes a fire-resistant balcony B.
Moreover, the non-combustible support block 4 is integrally disposed in the heat insulating layer 2B as if it is a continuous body of the heat insulating layer 2B, and the gap between the heat insulating layer 2B and the non-combustible support block 4 becomes a sealed air layer, By exhibiting the function of the heat insulating layer, the heat insulating function of the covering heat insulating layer 2B with respect to the concrete frame CF (concrete outer wall W) due to the insertion of the non-combustible support block 4 does not occur.
Further, the protruding portion AP of the Z-strip 1 toward the concrete frame CF can be bent as necessary and fixed in the concrete outer wall W, so that the protruding position of the balcony floor slab SB with respect to the outer wall W is free. Thus, the degree of freedom in designing the balcony B is improved.

Further, since the Z-stripes 1 have a strong support force, the arrangement intervals between the Z-strips 1 can be widened, and the formwork and the bar-laying work at the time of constructing the balcony floor slab SB can be rationalized. The outer wall structure can be rationalized in terms of construction period and cost, and the number of Z-strips 1 that become the only thermal bridge route is small, so the thermal bridge from the balcony B is suppressed, and the outer wall is It is possible to provide a high-quality balcony-equipped building that has a moisture-permeable outer heat insulating coating and that is free from internal condensation and that is superior in terms of living environment.
In addition, since the Z-strip 1, the non-combustible support block 4, and the processed composite panel 2 can all be prepared as factory-produced products, the outer wall structure with a balcony with a uniform and guaranteed quality is obtained.

In the construction of the outer wall structure, since the number of Z bars 1 arranged is small, the workability of the mold frame is much improved compared to the conventional bar arrangement work in the first and second examples.
In addition, since the processed composite panel 2 removes the exterior base material 2A in the contact area of the balcony floor slab SB, that is, the entire surface of the base end Bb of the balcony floor slab SB, the processed composite panel 2 is directly applied to the cast concrete. Various exterior base materials such as a light and moisture-permeable thin rigid plate such as a magnesium cement plate 2A, which deteriorates when touched, can be used for the composite panel 2.
And also in the mold form of the balcony floor slab SB, the processed composite panel 2 is adopted as the outer formwork of the outer wall by a conventional method, and the non-combustible support block 4 provided with the Z-strip 1 is used as the fitting notch H1 of the outer formwork. Since it only has to be fitted, the mold frame becomes easy, and the protruding construction of the fire-resistant balcony floor slab SB can be rationally constructed by the conventional mold frame work.

  In addition, the incombustible support block 4 of the present invention has a Z-strand 1 in the form of a truss bar having a strong support force, which can be prepared with uniform quality as a factory-produced product, and the Z-stripe to the incombustible heat insulating layer 4B. Since the installation of 1 is also a factory work, the non-combustible support block 4 can be prepared as a homogeneous mass-produced product with supporting force, heat insulation and fire resistance, and the weight of the non-combustible heat insulating material 4B is equal to the weight of the Z-strip 1 Since it is only added, it is easy to carry, maintain and manage, and can be easily deployed at various work sites. A high-quality exterior insulated reinforced concrete building with a cantilevered balcony B Effective for dissemination.

[Shape of the balcony (Figs. 1 and 2)]
1 is a partially cutaway perspective view of an outer wall structure provided with a balcony B to be implemented. FIG. 2A is a longitudinal sectional view, and FIG. 2B is a partially enlarged view of FIG. .
As shown in FIGS. 1 and 2, the balcony B covers the outer surface Wf of the concrete outer wall W having a wall thickness TW of 180 mm as a bearing wall of the concrete frame CF with the processed composite panel 2 having a thickness T1 of 82 mm. From the outer surface Wf of the concrete outer wall W, it protrudes in a cantilevered manner with the heat insulating layer 2B interposed.

  The balcony floor slab SB has a depth LB of 1500 mm, a thickness TB of 180 mm, and a parapet P having a height Ph and a width Pw of 150 mm at the long side edge. As shown in FIG. 1, the bottom surface sd ′ of the living part floor slab SA and the balcony floor slab SB are formed in a cantilevered form from the concrete frame only by the group of Z bars. The lower surface sd of this is projected on the same plane.

[Composite panel for general wall (Fig. 3)]
The general wall composite panel 2 is a panel used for processing and manufacturing the processed composite panel 2 employed in the balcony arrangement position, and covers the general wall portion of the concrete outer wall W with moisture-permeable outer heat insulation.
That is, as shown in FIG. 3A, the general panel 2 has a heat insulation layer 2B having a width BW of 900 mm, a thickness T3 of 75 mm, a height 1h of 2700 mm (standard floor height), and a width AW of 900 mm. The exterior base material 2A having a T2 of 12 mm and a height of 2680 mm, the heat insulating layer 2B protrudes 40 mm (d3) at the upper end, enters 20 mm (d4) at the lower end, and 10 mm (d1) of the exterior base material 2A in the width direction. In the composite panel 2, the upper and lower connection parts of the composite panel 2 are formed with a horizontal joint of 20 mm between the exterior base materials 2A, and the left and right connection parts can be connected to each other without any vertical joints. In addition, a separator insertion hole hs and a bolt insertion hole hb are arranged at appropriate positions.

And as the heat insulation layer 2B, an extruded polystyrene foam 75 mm thick plate (moisture permeability resistance: 52.5 m ² hmmHg) of JISA9511 is adopted, and the exterior base material 2A is composed mainly of magnesium oxide and cinnabar sand on both sides. Lightweight, high-strength, moisture-permeable (moisture-permeable resistance: 14 m ² hmmHg) magnesium cement board (made by Nitto Boseki Co., Ltd.) Adoptable).

[Composite panel for balcony (Fig. 3)]
The composite panel 2 for a balcony is obtained by processing only the upper end and the lower end of the composite panel 2 for a general wall so as to be used for the construction of the balcony floor slab SB. The exterior base material 2A is flattened, and at the upper end of the processed panel 2, as shown in FIG. 3B, the exterior base material 2A is cut out in the contact area of the base end Bb surface of the balcony floor slab SB, and a heat insulating layer is formed. 2B is exposed from the upper end by a height of 4 h, and a fitting notch H1 for mounting the incombustible support block 4 provided with the supporting Z-strips 1 is arranged on the exposed portion of the heat insulating layer 2B at a height of 4 h, On the upper end surface of the heat insulating layer 2B, shallow seat grooves 2G for arranging the T-shaped joints 7 are appropriately (standard: two places).

  That is, as shown in FIG. 3 (B), at the upper end of the panel, the heat insulating layer 2B is exposed by a height 4h (200 mm) corresponding to the thickness TA (200 mm) of the living part floor slab SA. The exterior base material 2A is cut out, and two of the fitting cutouts H1 having a width W4 of 60 mm are provided on the exposed portion of the heat insulating layer 2B having a height of 4 h at a position W1 (standard: 225 mm) from the side edge and 450 mm. It is formed over a height of 4 h at intervals, and is prepared in a form in which seating grooves 2G for placing the T-shaped joints 7 are arranged at appropriate positions (standard: two locations) on the upper surface of the heat insulating layer 2B.

[Z-strip (Fig. 2, Fig. 4)]
As shown in FIG. 2, the Z bar 1 is composed of a Z floor upper bar 1U for tensile stress bearing and a Z lower bar 1D for compressive stress bearing of a balcony floor slab SB, a horizontal upper side 1U ′ in the center and a horizontal upper side. The Z truss muscle 1M provided with an intermediate inclined portion 1S on both sides inclined downward at an angle θ of 45 ° from both ends of the portion 1U ′ and a horizontal lower side portion 1D ′ extending outward from the lower end of the intermediate inclined portion, The center distance L15 is maintained and the upper and lower parts are bonded and fixed together.

That is, the Z bar 1 is a member that supports the floor slab SB of the reinforced concrete balcony B of the cantilever support type.
The resistance (drag) against the bending stress (compressive stress, tensile stress) caused by the fixed load + loading load borne by the balcony B is determined by the diameter of the steel bar that is fixed from the balcony B to the concrete frame CF side and the arrangement interval. The moment M is represented by the general formula: M = at × ft × j .
Here, at is the cross-sectional area of the tensile reinforcing bar, ft is the allowable tensile stress degree of the reinforcing bar, and j is the stress center distance of the bending material.

The possibility of adopting the Z streaks 1 when arranged at 450 mm intervals on the balcony floor slab SB (depth LB: 1500 mm, floor slab thickness TB: 180 mm) of this example is as follows.

Diameter 19mm Diameter 22mm Diameter 25mm
Total length (mm) of Z upper end muscle 1U 1276 1200 1144
Overall length (mm) of Z lower end muscle 1D 793 760 727
Weight (kg) 5.0 6.3 7.3
Application price (yen) 320 403 500
Strength margin (%) 43 58 68
Balcony tip displacement (mm) 2.6 2.0 1.7
Residential floor slab SA and heat insulation layer 2B
Displacement amount of the contact part with (mm) 0.3 0.3 0.3
* All the Z truss bars 1M use 16mm deformed bar steel in the same form.

  From the above calculation, the Z bar 1 has a diameter of 22 mm and a length of 1200 mm as the Z upper bar 1U, and a bar of 22 mm and a length of 760 mm as the Z lower bar 1D. 16mm, horizontal upper side 1U ', horizontal lower side 1D' on both sides is 80mm, and intermediate steel 1S has an inclined angle θ of 45 °. Abutting on the lower surface of 1U, welding from both sides to form a fixing portion ZU, horizontal lower side portions 1D 'on both sides of the Z truss bar 1M abutting on the upper surface of the Z lower end bar 1D, and welding from both sides to form a fixing portion ZD As shown in FIG. 2 (B), the steel bars 1U, 1D, and 1M are assembled into a truss, the distance L14 between the Z upper bar 1U and the Z lower bar 1D is maintained at 70 mm, and the center bar L15 is 92 mm. Epoxy resin with excellent anti-corrosion, workability, and heat insulation over the entire length The paint fireproof coat primer (ESK Kaken Co., Ltd., trade name) is applied twice as a rust preventive paint, and the SK fireproof coat (SKE Co., Ltd.) is further applied to the part located in the central heat insulating material 4B. A Z-stripe 1 was prepared by applying Kenken (trade name).

[Non-combustible support block (Fig. 4)]
4A is a perspective view of the incombustible support block 4, and FIG. 4B is an exploded perspective view of the incombustible support block 4. FIG.
As shown in FIG. 4A, the non-combustible support block 4 has a thickness Y4 of 75 mm which is the same size as the heat insulation layer thickness T3 of the processed composite panel 2, and a height Z4 is the depth of the fitting notch H1 of the heat insulation layer 2B. That is, the nonflammable heat insulating material 4B having the same dimension (standard: 200 mm) as the height 4h of the exposed portion of the heat insulating layer 2B and having a width X4 (50 mm) penetrates and holds one of the Z bars 1.
As the incombustible heat insulating material 4B, a lock cell board (Fuji Kasei Kogyo Co., Ltd., trade name) made of calcium carbonate foam is used.

Then, as shown in FIG. 4 (B), the non-combustible heat insulating material 4B is divided into two non-combustible heat insulating material pieces 4B 'having a width X4 divided into two widths X2 (25 mm). On the inner surface 4D, the fitting groove H2 for the Z upper end muscle 1U constituting the Z line 1, the fitting groove H2 'for the horizontal upper side 1U' of the Z truss line 1M, and the Z lower end line 1D are symmetrically provided on the inner surface 4D. The fitting grooves H3 are formed so that the fitting grooves H2, H2 ′, H3 are slightly larger (standard: 6 mm) than the diameters of the fitting bars (1U, 1D, 1M).
The vertical position of the fitting grooves H2, H2 ′, H3 in the non-combustible heat insulating material piece 4B ′ may be determined from the balcony floor slab thickness TB (180 mm) and the concrete covering thickness of the Z reinforcement 1, and the Z upper end reinforcement. The upper end of 1U may be 53 mm below the upper end of the incombustible heat insulating material 4B, and the lower end of the Z lower end bar 1D may be 33 mm above the lower end of the incombustible heat insulating material 4B.

In this case, if a table type polystyrene foam cutter is used, desired fitting grooves H2, H2 ', and H3 can be formed smoothly.
Next, the front and rear two positions located in the non-combustible heat insulating material 4B at the center of the Z-strip 1, that is, the position of the non-combustible heat insulating material 4B at a small distance d12 (standard: 4 mm) from the front surface F4 position LF-LF A gap follow sheet 12A (Sekisui Chemical Co., Ltd., Softlon (trade name)) having a thickness of 2 mm and a width of 20 mm is wound around the rear surface B4 position LB-LB at a small distance d12 (standard: 4 mm), Apply an adhesive to the inner surface 4D of both non-combustible heat insulating material pieces 4B ', and fit the Z-strips 1 into the fitting grooves H2, H2', H3 of the non-combustible heat insulating material pieces 4B 'on both sides, thereby dividing the non-combustible heat insulating material. The piece 4B ′ is fixedly integrated with one incombustible heat insulating material 4B.

The gap following sheet 12A expands with time in the thickness direction in the integrated non-combustible heat insulating material 4B, fills the gap between the Z stripe 1 and the fitting grooves H2, H2 ′, H3, and the Z stripe 1 Hold.
Next, by filling the fitting grooves H2, H2 ′, H3 of the non-combustible heat insulating material 4B with the fireproof sealing 13 from the front surface F4 side and the rear surface B4 side using a conventional sealing gun, the inner clearance follower sheet 12A is provided. And the non-combustible support block that elastically holds the Z-strand 1 with the outer fireproof sealing 13.

In addition, if a clearance gap arises between the joint surfaces of the nonflammable heat insulating material pieces 4B 'on both sides, the fireproof sealing 13 may be filled in the clearance.
Then, the formed non-combustible support block 4 is in contact with the heat insulating layer 2B at the upper edge, the front edge, and the rear edge of the both side surfaces 4S as shown in FIGS. 4 (A) and 5 (B). A gap follower sheet 12A (20 mm width, 2 mm thickness) with a protective sheet is pasted, and a double-sided adhesive tape 12B with a protective sheet is also pasted on the lower surface of the non-combustible support block 4 to obtain a factory product. Prepare as.

[T-shaped joint]
As shown in FIG. 5 (A), the T-joint 7 is a joint member used when the composite panel 2 for a balcony is connected up and down, and is a horizontal blade placed in the seating groove 2G at the upper end of the composite panel 2. This is a plastic molded product having a T-shaped section and a wall thickness of 3 mm, comprising 7F and upper and lower vertical blades 7W for contacting the back surface Br of the heat insulating layer 2B of the composite panel 2.
Then, a nail hole H7 having a diameter of 3 mm is formed at a proper position of the horizontal blade 7F and the vertical blade 7W, and a drop prevention bolt 14B (diameter: 7.. 5mm), a 12 mm diameter bolt insertion hole H7 'is drilled, and a double-sided adhesive tape is attached to the lower surface of the horizontal blade 7F for preparation.

[Construction of balcony (Fig.5, Fig.6)]
As shown in FIG. 6, the concrete mold frame is formed by using the processed composite panel 2 for the balcony as an outer wall outer mold frame F0 with the exterior base material 2A as an outer surface, together with the outer wall inner mold frame F1, and by using a conventional mold frame means. A frame FW is formed, and a mold FA of the residential floor slab SA is formed inside the composite panel 2 on the outer wall mold FW, a balcony floor slab mold FB is formed outside the composite panel 2, and a conventional mold framework. Consists of means.
In the fitting notch H1 of the composite panel 2 erected with the mold frame, the width W4 is 60 mm, the gap follow-up sheet shown in FIG. 4A is 50 mm in width X4 and 2 mm in thickness on both side surfaces 4S. The nonflammable support block 4 having 12A is peeled off the curing paper (protective sheet) of the gap follower sheet 12A on both sides and the curing paper of the double-sided adhesive tape 12B on the lower surface, as shown in FIGS. The incombustible support block 4 is fitted and seated in alignment with the heat insulating layer 2B.
In this case, the gap follower sheet 12A closes the gap between the edge of the heat insulating layer 2B of the panel 2 by expansion over time.

  And from the non-combustible support block 4, the protrusion part AP of the Z line 1 protruding into the living part floor slab formwork FA and the protrusion part BP of the Z line 1 protruding into the balcony floor slab formwork FB are respectively molded. Within the frame, the position is held by the spacers 11A and 11B, and the vertical stripe 8A, the horizontal stripe 8B, and the width stop stripe 8C are provided in the outer wall mold FW and the balcony floor slab mold FB is long by a conventional method. The side reinforcing upper bars 9A, the long side lower end bars 9B, the short side upper end bars 9C, and the short side lower end bars 9D are also arranged on the living room floor slab formwork FA, and the necessary reinforcing bars are arranged. The protrusions AP and BP are respectively fastened with the reinforcing bar in the mold and a wire as necessary.

Next, as shown in FIG. 5A, the horizontal blade 7F of the T-shaped joint 7 is disposed in the shallow (standard: 3 mm) seating groove 2G on the upper end surface of the heat insulating layer 2B.
In this case, the vertical blade 7W is brought into contact with the back surface Br of the heat insulating layer 2B, and the lower surface of the horizontal blade 7F and the seating groove 2G are bonded with a double-sided adhesive tape.
Then, the T-joint 7 is fixed to the upper end surface of the heat insulating layer 2B of the panel 2 by nailing the lower vertical blade 7W and the horizontal blade 7F of the bonded T-joint 7 into the nail hole H7.
Next, when concrete is placed into the wall formwork FW, the living part floor slab formwork FA, and the balcony floor slab formwork FB, and the formwork is disassembled after the placement concrete is hardened, FIG. 2 (A) shows. Thus, the balcony floor slab SB can be constructed in a structure in which the concrete frame CF is heat-insulated by the heat insulating layer 2B and is cantilevered only by the Z-strip 1.

The construction of the concrete balcony floor slab SB on the upper floor may be performed in the same manner as the existing balcony floor slab SB on the lower floor.
When constructing the balcony floor slab SB on the upper floor, as shown in FIG. 2B, the lower vertical blade 7W of the T-joint 7 is embedded in the hardened concrete, and the upper vertical blade 7W protrudes upward. Therefore, when the processed composite panel 2 is erected, the protruding vertical blade 7W functions as a ruler, and the heat insulating anchor 14A and the heat insulating anchor 14A through the bolt insertion hole H7 ′ of the vertical blade 7W in the mold frame of the processed composite panel 2 The bolts 14B can be fastened, and the processing composite panel 2 can be easily erected and positioned and fixed.

It is a partially cutaway perspective view of the outer wall structure of the present invention. It is explanatory drawing of the outer wall structure of this invention, Comprising: (A) is a longitudinal cross-sectional view, (B) is the principal part enlarged view of (A). It is explanatory drawing of the composite panel employ | adopted for this invention, Comprising: (A) is a partially cutaway side view of the composite panel for general walls, (B) is a partially cutaway perspective view of a process composite panel, (C) is (B) FIG. It is explanatory drawing of the nonflammable support block used for this invention, Comprising: (A) is a perspective view, (B) is a disassembled perspective view. It is explanatory drawing which integrated the nonflammable support block of this invention with the panel, Comprising: (A) is a perspective view, (B) is a top view. It is a principal part longitudinal cross-sectional view of the type | mold framework of this invention. It is explanatory drawing of the prior art example 1, Comprising: (A) is a balcony longitudinal cross-sectional view, (B) is a reinforcing bar unit front view, (C) is a top view of a reinforcing bar unit. It is explanatory drawing of the prior art example 2, Comprising: (A) is a balcony longitudinal cross-sectional view, (B) is a principal part enlarged view of (A), (C) is explanatory drawing of a heat insulating material.

Explanation of symbols

1 Z-bar 1D Z-bottom bar 1D 'Horizontal lower side 1M Z truss bar 1S Middle inclined part 1U Z-upper bar 1U' Horizontal upper side 2 Composite panel (working composite panel, panel)
2A Exterior base material (magnesium cement board)
2B Insulating layer 2G Seating groove 2S Layering surface 4 Noncombustible support block 4B Incombustible heat insulating material 4B 'Noncombustible heat insulating material piece 4D Symmetric inner surface (inner surface)
4S Side face 7 T-shaped joint 7F Horizontal blade 7W Vertical blade 8A Vertical bar 8B Horizontal bar 8C Width stop bar 9A Longer side upper bar 9B Longer side lower bar 9C Short side upper bar 9D Short side lower bar 10A Template 10B 10C Large pull 10D Pipe support 11A, 11B Spacer 11C Separator 12A Gap following sheet 12B Double-sided adhesive tape (adhesive tape)
13 Fireproof Seal 14A Insulation Anchor 14B Bolt 16A Sealing 16B Backup Material

A living part
AP, BP Protrusion B Balcony B4 Rear surface Bb Base end Br Insulation layer back (back)
CF concrete frame F4 front F0 outer wall outer formwork (outer wall formwork)
F1 outer wall inner formwork (inner wall formwork)
FA Residential floor slab formwork FB Balcony floor slab formwork FW Exterior wall formwork (wall formwork)
hb Bolt insertion hole hs Separator insertion hole H1 Fitting notches H2, H2 ', H3 Fitting groove H7 Nail hole H7' Bolt insertion hole L15 Stress center distance (center-to-center distance)
P Parapet SA Residential part floor slab SB Balcony floor slab Sd, Sd 'Lower surface Sf, Sf' Upper surface W Concrete outer wall Wf Outer surface ZD, ZU Weld fixing part (adhering part)

Claims (8)

An outer wall structure in which a reinforced concrete balcony is cantilevered from a reinforced concrete outer heat insulating outer wall, and the concrete outer wall (W) has a moisture-permeable exterior base material (2A) on the layering surface (2S) of the heat insulating layer (2B). ) was coated with the particle course with the moisture permeation-type composite panel (2), balcony floor slabs (SB) in the form of thermally isolated protrudes one且adiabatic layer from the concrete outer wall (W) (2B), Ri consists not燃断heated material, there at the same thickness insulation layer thickness (2B) and (T3) of the thickness (Y4) a composite panel (2), for fitting the notch of the heat insulating layer (2B) (H1) the heat insulating layer (2B) and air-tightly fitted to and non retardant support block (4) Z muscle through the (1), one of the protruding portion (AP) in the concrete skeleton (CF), The other protrusion (BP) is integrally fixed in the balcony floor slab (SB). , The outer wall structure of the balcony floor slab (SB) is projected in a cantilever supported from the concrete outer wall (W). The non-combustible support block (4) has a Z upper end line (1U) and a Z lower end line (1D), a central horizontal upper side part (1U '), an intermediate inclined part (1S) inclined downward on both sides, and a horizontal lower side on both sides. A Z truss bar (1M) provided with a portion (1D '), wherein the Z bar (1) integrated vertically with maintaining the stress center distance (L15) is held in an airtight manner. 1 outer wall structure.   Using a moisture-permeable composite panel (2) in which a foam-permeable exterior base material (2A) is layered and integrated with the foamed plastic heat insulating layer (2B), the composite panel ( 2) is the outer wall formwork (F0), and in the balcony floor slab (SB) protruding wall portion, the exterior base material (2A) of the composite panel (2) is connected to the balcony floor slab (SB) from the upper end. A height (4h) that interferes with the base end (Bb) of the non-combustible support block (4) is cut off, and a fitting notch (H1) that extends over the cut height (4h) is formed at the position where the non-combustible support block (4) is disposed. Wall formwork (F0), composite notch (H1) of composite panel (2), Z upper end (1U) and Z lower end (1D), Z truss (1M), center distance up and down The non-combustible support block in which the Z-strip (1) integrated with (L15) is held through the non-combustible heat insulating material (4B). (4) is fitted and fixed, and one protrusion (AP) of the Z-strip (1) is placed in the concrete frame side formwork (FA), and the other protrusion (BP) is placed on the balcony floor slab formwork ( FB) A method for constructing an outer wall in which a conventional mold is formed and a balcony floor slab (SB) is projected in a cantilevered form from the concrete outer wall (W) by placing concrete into the mold. The non-combustible support block (4) has a gap follower sheet (12A) disposed on both side surfaces (4S), and is fitted and fixed to the fitting notch (H1) by an airtight stop with the heat insulating layer (2B) surface. The method for constructing an outer wall according to claim 3 . A seating groove (2G) extending over the thickness (T3) of the heat insulating layer (2B) is arranged at an appropriate position on the upper end of the heat insulating layer (2B) of the composite panel (2). The T-joint (7) having the horizontal blade (7F) and the vertical blade (7W) having the horizontal blade (7F) in the seating groove (2G) and the vertical blade (7W) in the heat insulating layer (2B) The method for constructing an outer wall according to claim 3 or 4 , wherein the outer wall is brought into contact with the back surface (Br) and nailed to the heat insulating layer (2B).   A non-combustible support block (4) used in the outer wall construction method according to claim 4, wherein a non-combustible heat insulating material (4B) of a rectangular cube of height (Z4), thickness (Y4) and width (X4) The non-combustible heat insulating material piece (4B ') is divided into two left and right parts, and the non-combustible heat insulating material piece (4B') has a symmetrical groove (1D) fitting groove on the symmetrical inner surface (4D). (H2, H2 ′, H3) are arranged, and the Z upper muscle (1U) and the Z lower muscle (1D) are joined and integrated with the Z truss (1M) while maintaining the center distance (L15). A nonflammable support block in which (1) is fitted into the fitting grooves (H2, H2 ′, H3), and the nonflammable heat insulating material pieces (4B ′) on both sides are bonded and integrated with the symmetrical inner surface (4D). The Z truss bar (1M) is fixedly integrated with the lower surface of the Z upper bar (1U) at the central horizontal upper side (1U ′) and the upper surface of the Z lower bar (1D) at the horizontal lower side (1D ′) on both sides, And the non-combustible support block of Claim 6 whose both-side intermediate | middle inclination part (1S) is an included angle of 45 degrees with respect to Z lower end reinforcement (1D), respectively. The Z-strip (1) is formed by winding the gap following sheet (12A) around the fitting groove (12A) at a position where it enters the non-combustible heat insulating material (4B) from the front surface (F4) and the rear surface (B4) of the non-combustible heat insulating material (4B). H2, H2 ', H3) are fitted, and the fire-resistant sealing (13) is filled and held from the front surface (F4) and rear surface (B4) of the fitting grooves (H2, H2', H3) to the gap following sheet (12A). An incombustible support block according to claim 6 or 7 .

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