JP4097672B2 - Cantilever supporting balcony construction panel and balcony construction method - Google Patents

Description

  The present invention provides a heat-insulating panel (hereinafter referred to as a supporting panel for building a balcony, fence, outer corridor, etc. (hereinafter referred to as a balcony in this specification) in a cantilevered floor slab form on a reinforced concrete external heat insulating building (hereinafter referred to as a reinforced concrete panel). , Called Z-stripe panel), and a cantilever floor slab type balcony construction method using the Z-stripe panel, and an outer wall structure provided with a cantilever supporting balcony, and belongs to the technical field of architecture. is there.

  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 concrete frame is reduced by solar radiation, and cracking of the concrete frame can be suppressed, and the concrete frame is 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. 9 and the conventional example 2 shown in FIG. 10 have already been proposed. ing.

  Conventional example 1 shown in FIG. 9 was cited as a conventional example in Patent Document 1, and as shown in FIGS. 9 (B) and (C), a large number of long connected reinforcing bar groups are provided on the top of 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. 10 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 form frame for the housing unit, 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. 10C, the upper notch groove group and the lower notch groove group are formed on the heat insulating material. As shown in FIG. 10 (B), a heat insulating material is disposed at the base end of the balcony mold, and the connecting reinforcing bars are separated 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 a 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) is to set concrete balcony mold frame and the dwelling unit building frame-body mold.
JP 2005-188036 A

In the conventional example 1 in FIG. 9, 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, the protruding part of a balcony or the like has various sizes and shapes, 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. Therefore, it is difficult to connect the reinforcing bars of the thermal bridge reducing rebar unit, and the assembly of the reinforcing bars in the balcony form and the dwelling unit form is complicated.

In Conventional Example 2 (FIG. 10), 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 cable, 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 connecting reinforcing bar to the dwelling unit where the balcony floor slab reinforcement has multiple reinforcements. In addition to the excessive reinforcement in terms of strength, the reinforcement arrangement interferes with the reinforcement arrangement, and the work becomes complicated.
In addition, as shown in FIG. 10 (B), 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. 10) and Conventional Example 1 (FIG. 9), 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. This is for an external insulation building with a post-pasting method in which a heat insulating material is stuck to the surface, and has a problem of versatility.
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 possible to provide a novel Z-stripe panel, a balcony construction method, and an outer wall structure including a cantilevered balcony constructed using the Z-stripe panel.

  The Z-stripe panel of the present invention is, for example, a Z-stripe panel 20 or 21 for constructing a cantilever supporting balcony in which a Z-strip 1 is penetrated and held in a foamed plastic heat insulating layer 2B as shown in FIG. 2B has a thickness T3 equal to that of the heat insulating layer 2B for covering the concrete wall W with heat insulation, and a height Bh is at least the floor slab thickness TB of the balcony B to be formed. A top truss 1U and a Z bottom streak 1D are Z truss bars 1M composed of a horizontal upper side 1U ′, an intermediate inclined part 1S and a horizontal lower side 1D ′, and are integrally fixed while maintaining a stress center distance L15 in the vertical direction. Yes, one half of the projecting part BP of the Z bar 1 is a fixed part into the balcony floor slab SB, and the other half of the projecting part AP is a fixed part into the concrete frame CF. In CF, It is a Z-stripe panel that is constructed integrally under thermal bridge suppression.

The foamed plastic heat insulating layer 2B is a foam heat insulating plate of JIS9511 such as extruded polystyrene foam, beaded polystyrene foam, and rigid urethane foam.
Further, as shown in FIG. 2 (A), the Z line 1 is formed by bending a straight Z upper line 1U and a straight Z lower line 1D into a Z shape so that a horizontal upper side 1U ′, an intermediate inclined part 1S, In the Z truss muscle 1M that forms the horizontal lower side 1D ′, the horizontal upper side 1U ′ is the Z upper end 1U, the horizontal lower side 1D ′ is the Z lower end 1D, the Z upper end 1U and the Z lower end 1D, In the upward direction, welding is integrated while maintaining the stress center distance L15.

In this case, the diameter, length, and stress center distance L15 of the Z upper bar 1U and the Z lower bar 1D may be determined by structural calculation of the balcony floor slab SB to be applied, but the Z upper bar 1U and the Z lower bar 1D. Is preferably a deformed steel bar having the same diameter from the viewpoint of the adhering force to the concrete, that is, from the viewpoint of structural calculation. Since the Z lower end bar 1D is a compression drag load, the Z upper limit bar 1U of the tensile drag load Can be made shorter.
Moreover, the penetration form of the Z-strip 1 to the heat-insulating layer 2B is sufficient as long as the Z-strip 1 can be held at a predetermined position. The Z-strip 1 penetrates through the heat-insulating layer 2B, and the heat-insulating layer 2B penetrates with foamed urethane on the spot. The hole may be repaired.

  Accordingly, in the Z bar panels 20 and 21 according to the present invention, the Z upper bar 1U and the Z lower bar 1D are integrated with each other while maintaining the required stress center distance L15 in the vertical direction. Regarding the support of the SB, for example, as shown in the conventional examples 1 and 2, a far greater support force (in terms of structural calculation: 3 than the case where the upper end muscle for tensile force and the lower end for compression force are arranged independently. .64 times), the distance between the Z bars 1 of the present invention can be set to 3.64 times that of the connecting reinforcing bars in the conventional examples 1 and 2, and the setting is significantly wider (standard: one at 450 mm intervals). ) Because it can be done, Z bar 1 bar placement work on the balcony floor slab formwork and concrete frame formwork at the time of molding without interfering with the reinforcement in each formwork Can be implemented smoothly.

  Moreover, since the Z-stripe panels 20 and 21 are manufactured at the factory, they can be prepared as a homogeneous and reliable product, and one or two Z-stripes are provided on one panel (standard: width Bw is 900 mm). Since there are only two Z-strips for 450 mm intervals), storage and transportation are easy, and it is possible to deploy to a wide range of construction sites. Safety is guaranteed.

Further, as shown in FIG. 2 (C), the Z line 1 penetrates the insertion hole H1 in the shape of a long hole in the vertical direction of the heat insulating layer 2B, and in the insertion hole H1, as shown in FIG. 2 (B). It is preferable to fill and hold the Z streak 1 with the heat insulating refractory material 2E.
In this case, the heat-insulating refractory material 2E is rich in fire resistance and heat insulation, and can be cut with scissors. For example, Khao wool (Isolite Industry Co., Ltd., trade name) or Fi-Block (Sekisui Chemical Co., Ltd., trade name) For example, the Z-strip 1 may be covered with in-situ foamed urethane.
If the Z-strip 1 is covered with the fiber-based heat-insulating refractory material 2E, the gap between the heat-insulating refractory material 2E and the heat-insulating layer 2B is filled with in-situ foamed urethane. Thus, proper arrangement is easy under the fine adjustment of the position of the Z-strip 1 at the time of formwork.
Therefore, penetration of the Z wire 1 into the heat insulating layer 2B is easy as penetration into the insertion hole H1 in the form of a vertically long hole.

If the balcony floor slab is constructed with the Z-stripe panels 20 and 21 as shown in FIG. 5, the Z-strand 1 always bears the strength against the downward bending of the balcony floor slab SB. Since it is protected by the heat insulating refractory material 2E at the 2B site, it is possible to prevent the lowering of the supporting force due to the deterioration of the heating of the Z-strip 1 against the combustion of the heat insulating layer 2B at the time of fire, and the fire resistance of the balcony B can be guaranteed. .
Moreover, the heat insulating function of the heat insulating layer 2B in a state where the insertion hole H1 is a long hole in the vertical direction and contains three integrated reinforcing bars (Z upper bar 1U, Z truss bar 1M, Z lower bar 1D). Since it becomes repair, the work of filling the refractory material under the adjustment of the position of the Z-strip 1 at the stage of manufacturing the Z-strip panel becomes easy, and a uniform Z-strip panel can be manufactured in the factory.

Further, in the Z muscle panels 20 and 21, as shown in FIG. 1, one surface of the insertion hole H1 is fastened by a seat plate 7 provided with Z muscle insertion circular holes H2, H2 'and H3 on the upper and lower sides. It is preferable to close.
In this case, the seat plate 7 may be a rectangular plastic plate having a thickness of 2 to 3 mm and covering the entire insertion hole H1, and each of the insertion circular holes H2, H2 ', H3 has a diameter of the corresponding insertion reinforcing bar. Slightly larger (standard: 3 mm) is sufficient.
And the seat board 7 should just adhere | attach to the form which closes the long hole H1 from the one surface of the heat insulation layer 2B previously.
And if Z line | wire 1 is coat | covered with the heat insulation refractory material 2E in the long hole H1, and the long hole H1 is repaired with an in-situ foaming urethane, the Z line | wire 1 will be the insertion circle of the seat board 7 with respect to the heat insulation layer 2B. Because the position of the holes H2, H2 ', and H3 is maintained, and the seat plate 7 does not exist, the heat insulating refractory material 2E can be moved slightly up and down and left and right. The Z-strip 1 can be adjusted, and the Z-strip 1 can be easily arranged at an appropriate position.
Therefore, since the seat plate 7 closes one surface of the insertion hole H1, the seat plate 7 has a stopper action in the work of filling the heat-insulating refractory material 2E and injecting and filling urethane foam from the other surface of the insertion hole H1. The workability of repairing the hole H1 is improved.

Further, it is preferable that the Z-bar insertion circular holes H2, H2 ′, H3 of the seat plate 7 hold gaps with the insertion reinforcing bars 1U, 1M, 1D, and the gaps are filled and closed with foamed urethane in the field.
In this case, each of the insertion circular holes H2, H2 ′, H3 of the seat plate 7 may be approximately 3 mm larger than the diameter of the insertion reinforcing bar.
Therefore, even when the in-situ foamed urethane is filled after the heat-insulating refractory material 2E is filled or only the in-situ foamed urethane is directly filled into the gap of the insertion hole H1, the minute gap between the seat plate 7 and the insertion line is foamed with urethane. The balcony floor slab SB is closed and constructed with the minimum displacement (deflection) of the Z-strip 1 at the base end Bb (standard: 0.3 mm or less). In response to the movement, the urethane foam filled in the gaps between the insertion circular holes H2, H2 ′, H3 of the seat plate 7 and the insertion reinforcing bars 1U, 1M, 1D has a cushioning action, and the vibration of the Z muscle 1 is vibrated. Absorbs and suppresses damage to the heat insulating layer 2B.

Further, as shown in FIG. 2 (B), the Z-strip 1 has an intermediate inclined portion 1S of the Z-truss 1M inclined over the entire width T3 of the heat-insulating layer 2B, thereby giving the heat-insulating layer 2B a rigid structure function. Is preferred.
In this case, the truss structure by the Z truss bar 1M can be introduced over the entire width of the heat insulating layer width T3 (standard: 75 mm) of the Z bar panel 20, and the heat insulating layer 2B having a low strength is itself, but in terms of mechanics, it is applied to the concrete body. The balcony floor slab SB integrated with the concrete frame CF by the Z-strand panel 20 is mechanically replaced by the Z-strand panel 20 so that the heat-insulating layer 2B area between the concrete wall W also becomes a rigid-structure area. Combined with the provision of a sufficient bending moment center distance L15 between the Z upper end 1U and the Z lower end 1D by 1M, the amount of bending due to the bending moment of the balcony floor slab base end Bb is extremely reduced (standard : 0.3mm or less), and cantilever support of the balcony floor slab SB becomes possible.

Further, as shown in FIG. 2B, the Z-strand 1 has an intermediate inclined portion 1S of the Z truss bar 1M inclined at 45 °, and a fixing portion ZU with the Z upper-end streak 1U is a protruding portion toward the balcony. It is preferable that the fixing part ZD with the Z lower end reinforcement 1D is the base end of the projecting part AP toward the concrete frame at the base end of the BP.
If the cantilever supporting balcony B is constructed with the Z-stripe panel of the present invention, the bending stress acting on the balcony floor slab SB causes a tensile stress to act on the Z upper end muscle 1U and a compressive stress on the Z lower end muscle 1D. Since the shear stress generated at the neutral axis of the interface between the stress and the compressive stress is theoretically 45 °, the Z truss muscle 1M inclined at 45 ° can effectively counter the shear stress, and the Z-strip 1 can be selected rationally. It becomes possible.

  In addition, since the inclined portion 1S of the Z truss bar 1M is inclined downward from the balcony floor slab SB to the concrete frame CF side, the upper half thickness TB of the balcony floor slab SB is lowered by the downward bending stress of the balcony floor slab SB. The tensile force generated by the anti-tension force of the Z upper end muscle 1U and the anti-tensile force of the Z truss muscle 1M cooperates, and the Z muscle 1 rationally suppresses the downward displacement of the balcony floor slab SB.

Further, as shown in FIG. 2A, it is preferable that the Z-strand 1 is coated with the fireproof coating 1A in the heat insulating layer 2B and the heat insulating rust preventive coating 1B is applied to the protruding portions AP and BP on both sides.
In this case, an anti-corrosion and heat-resistant epoxy resin paint fire-resistant undercoat material (ESK Kaken Co., Ltd., trade name) is applied as the heat-insulating rust-preventing paint 1B over the entire length of the Z-strip 1 and the heat-insulating layer 2B. The corresponding part may be further overcoated with a SK fire-resistant coating top coating material (SK Kaken Co., Ltd., trade name) as fire-resistant paint 1A.
Therefore, if the heat insulation function is repaired by filling the hole H1 of the heat insulation layer 2B with the heat insulation refractory material 2E and / or the in-situ foamed urethane, the Z line is also burned during the combustion of the heat insulation layer 2B in the event of a fire. 1 can prevent fire degradation, can suppress the corrosion of Z-strip 1 in concrete, and when balcony B is attached to a highly durable exterior heat-insulated concrete building, the fire resistance of balcony B is also durable. Will also improve.

Further, in the Z-strip panel 20, as shown in FIG. 1B, wide shallow grooves 9 are arranged over the entire length on the upper end surface SU and the lower end surface SD of the heat insulating layer 2B. It is preferable to arrange a narrow and deep slit groove 9 'over the entire length at the center of the width.
In this case, as shown in FIG. 2 (D), the horizontal blade 8M of the cross joint 8 of the horizontal blade 8M and the vertical blade 8F orthogonal to each other fits into the groove 9 to fit the wall thickness (standard: 3 mm). The vertical blade 8F is set so as to fit into the slit groove 9 ', and the upper end surface SU of the composite panel 2 shown in FIG. If the slit groove 9 ′ is also provided on the lower end surface SD, the vertical connection between the Z-stripe panel 20 and the composite panel 2 can be freely positioned along the slit groove 9 ′ of the cross joint 8 at a desired position. By the adjustment and the matching action in the front-rear direction of the heat insulation layer of the composite panel and the heat insulation layer of the Z-stripe panel by the vertical blade 8F, the mold work of the Z-stripe panel 20 is simplified.
Therefore, as shown in FIG. 6 (A), the Z-strip panel 20 provided with the upper and lower connecting means of the grooves 9 and 9 'on the upper end surface SU and the lower end surface SD of the heat insulating layer 2B has a lower end surface SD and an upper end surface SU. It is advantageous for use in a part where the composite panel 2 is connected to the wall, that is, a part where the composite panel 2 exists above and below the balcony B.

  In addition, as shown in FIG. 3 (B), the lower end surface SD of the heat insulating layer 2B is used as the Z-stripe panel 21 in a portion where an entrance door or the like exists on the upper surface of the balcony floor slab SB and no outer wall exists. A wide shallow groove 9 is arranged over the entire length, a narrow and deep slit groove 9 'is arranged over the entire length of the groove 9, and the balcony floor slab arrangement side has an upper end on the heat insulation layer upper end surface SU. It is preferable to arrange the magnesium cement plate 2A in such a manner that the lower end is in contact with the upper end of the balcony floor slab SB.

  In this case, as shown in FIG. 6 (B), the Z-stripe panel 21 can be easily connected in the vertical direction by using the cross joint 8 for the composite panel 2 whose lower end surface SD is below. Since the upper outer surface of the panel 21, that is, the upper part on the side of the balcony floor slab is provided with the magnesium cement plate 2A, the moisture permeable outer heat insulating composite panel 2 covering the outer wall W (the magnesium cement plate 2A on the outer surface of the heat insulating layer 2B). As with the outer wall W, it is possible to cover the part protruding upward from the balcony floor slab SB below the entrance door as a part of the outer wall W. The entire outer wall W becomes a homogeneous moisture-permeable outer heat insulation.

  In addition, the invention of the method for constructing the cantilevered balcony B using the Z-stripe panels 20 and 21 according to the present invention includes a magnesium cement board 2A and a foamed plastic heat insulating layer 2B as shown in FIG. As shown in FIG. 4, the laminated composite panel 2 for moisture-permeable outer heat insulation is erected as the outer wall outer mold F0 with the magnesium cement plate 2A as the outer surface, and the outer wall inner mold F1 and the outer wall mold FW are constructed. On the inner side of the composite panel 2, a residential floor slab mold FA that communicates with the outer wall mold FW is formed to construct the concrete frame molds FW and FA. A frame FB is constructed, and on the composite panel 2, the Z-stripe panels 20, 21 according to claim 1 are connected in alignment with the heat-insulating layer 2 B of the Z-stripe panels 20, 21 on the heat-insulating layer 2 B of the composite panel 2. , Projection BP of Z muscle 1 In the balcony floor slab formwork FB, the protruding portion AP of the Z-strip 1 is placed in the concrete frame formwork FW, FA, and the concrete is placed in each formwork FW, FB, FA, and the balcony floor slab SB is placed. In addition, the concrete frame CF that is externally heat-insulated with the composite panel 2 is integrally constructed in a cantilever support form by using only the Z bars 1.

In this case, the composite panel 2 disposed below the Z-strip panel 20 is the same as the composite panel 2 disposed on the general wall portion, and the height 20h (standard: 200 mm) of the Z-strip panel 20 + composite panel 2 The height 2h (standard: 2500 mm) is the height of the general wall composite panel (standard: 2700 mm).
In addition, since the outer wall W which protruded the balcony floor slab SB is also provided with an opening part such as an entrance door, the case where the outer wall W exists on the balcony floor slab SB as shown in FIG. 6A is shown in FIG. Using the Z-strip panel 20 (panel height 20h: 200 mm), the Z-strip panel 20 is sandwiched and connected between the upper and lower composite panels 2, and the entrance door is placed on the balcony floor slab SB as shown in FIG. 6B. When 13 is present, a Z-stripe panel 21 (panel height 21h: 253 mm) shown in FIG.
Further, the alignment connection of the Z-stripe panels 20 and 21 onto the lower composite panel 2 is such that the lower composite panel 2 is held in position by a conventional scraping frame means. , 21 need only hold an appropriate posture only when placing concrete, so that the heat insulating layer 2B of the Z-stripe panels 20, 21 may be abutted on the heat insulating layer 2B of the composite panel 2.

  Therefore, in the present invention, as shown in FIG. 4, after forming the outer wall formwork F0 of the outer wall with the long composite panel 2 (panel height 2h: 2500 mm) as shown in FIG. Since the reinforcement panel 20 (panel height 20h: 200 mm) or the Z reinforcement panel 21 (panel height 21h: 253 mm) is placed and connected, the arrangement and construction of the Z reinforcement panels 20 and 21 are performed on the balcony floor slab formwork. It can be constructed at the time of bar arrangement to the FB and the living part floor slab formwork FA, and the Z bar panels 20 and 21 as a single unit are small and easy to handle, and the Z bar 1 has a strong support force. Combined with the small number and wide Z-spacing (standard: 450 mm spacing), the Z-strip 1 can be placed and held without interference with the floor slab placement, and the Z-strip panel is placed. And the workability of the formwork is good.

  Further, in the invention of the construction method of the cantilevered balcony B, as shown in FIG. 3A, the slit groove 9 is formed at the center of the thickness of the heat insulating layer 2B on the upper end surface SU and the lower end surface SD of the composite panel 2. ′ And the Z-strip panel 20 at the upper end surface SU and the lower-end surface SD as shown in FIG. 2C, and the Z-strip panel 21 at the bottom as shown in FIG. 3B. At the end surface SD, a wide shallow groove 9 and a slit groove 9 ′ at the center of the width of the groove 9 are formed in the heat insulating layer 2B, and the vertically aligned connection between the composite panel 2 and the Z-stripe panels 20 and 21 is shown in FIG. ), Using the cross joint 8 having the horizontal blade 8M and the vertical blade 8F, the vertical blade 8F is implemented by fitting the lower composite panel 2 and the upper Z-stripe panel 20 into each slit groove 9 ′. Is preferred.

In this case, if the double-sided adhesive tape 8A provided with release paper is attached to the upper and lower surfaces of the horizontal blade 8M of the cross joint 8 in advance, the cross joint 8 can be easily fixed to the upper and lower end surfaces of the heat insulating layer 2B. .
The wide and shallow groove 9 only needs to be flush with the horizontal blade 8M of the cross joint 8, and the slit groove 9 'may be wide and deep enough to fit the vertical blade 8F of the cross joint 8.

Accordingly, the cross joint 8 can easily align the thermal insulation layer 2B between the composite panel 2 and the Z-stripe panels 20 and 21 at a free position by inserting the vertical blade 8F into the slit groove 9 '. The cross joint 8 functions to ensure the posture of the Z muscle panels 20 and 21 in the formwork state, so that the workability of the formwork of the Z muscle panels 20 and 21 is improved.
Further, the presence of the shallow groove 9 into which the cross joint 8 of the heat insulating layer 2B is fitted becomes a sealed air region after the construction of the balcony B, and functions as an air heat insulating layer.

Further, in the invention of the construction method, as shown in FIG. 7 (A), the Z-strip protrusions AP of the Z-strip panels 20 and 21 are bent downward from the intermediate part and are placed in the outer wall formwork FW. It is preferable to arrange.
In this case, even if there is a step between the balcony floor slab SB and the living part floor slab SA, the protrusion AP disposed in the concrete frame CF of the Z bar 1 can be integrally fixed in the concrete outer wall W. The balcony floor slab SB can be suitably arranged with the Z-strip 1.
And, since the Z upper end bars 1U and the Z lower end bars 1D have a concrete adhesion force (anti-pull-out force) increased more than the straight form due to the bent form, the upper and lower end bars in the concrete frame CF are slightly shortened. It becomes possible.

Further, when the Z-line protruding portion AP is bent and arranged downward, it is preferable that the fixing plate 1C is attached to the ends of the bent portions of the Z upper-end line 1U and the Z-lower line line 1D as shown in FIG.
In this case, the fixing plate 1C increases the adhesion force of the concrete, and the projection length AP of the Z-strip 1 toward the concrete frame CF can be further shortened, and the shortened bent portion of the Z-strip 1 can be shortened. It becomes easy to place in the outer wall formwork FW, and the construction of the Z-skin panels 20 and 21 and the balcony floor slab SB regardless of whether the balcony floor slab SB has a step difference from the residential floor slab SA. Can be implemented reasonably.

Further, in the invention of the method for constructing the cantilever supporting balcony B to the outer heat insulating outer wall of the present application, the concrete outer wall W covers the entire surface including the general wall portion with the moisture permeable outer heat insulating composite panel 2. From the indoor side to the outdoor direction, the concrete wall W, the heat insulating layer 2B, the magnesium cement plate 2A, and the moisture permeability resistance are arranged in order from large to small, and the moisture permeability tile has a smaller moisture resistance than the magnesium cement plate 2A. It is preferable to finish the outer wall with an outer wall finishing material 14 such as the above.
In this case, moisture permeation resistance of each constituent member of the outer wall, concrete wall W (thickness 180 mm) are, 126m ² hmmHg / g, the heat insulating layer 2B (polystyrene foam 75mm thick extrusion method), 52.5m ² hmmHg / g , Magnesium cement board 2A (12 mm thickness) is 14 m ² hmmHg / g, and the exterior finish material is SK Kaken as a moisture permeable and waterproof multilayer coating with lower moisture resistance than magnesium cement board 2A. A trade name, a unit prescreen (JISA6909), a dan two cast (JISA6021), a moisture-permeable elastic tile (JISA6909), etc. can be used.

The resulting outer wall has a structure in which moisture permeability (humidity) naturally flows out to the outside because the moisture permeability resistance decreases sequentially from the large to the small from the indoor side toward the outdoor side.
Therefore, the reinforced concrete building that protrudes from the reinforced concrete balcony B is covered with the composite panel 2 having the moisture permeability and heat insulation, so that the inner wall of the reinforced concrete building W does not cause internal condensation, and energy saving is achieved. Even if it is provided with a protrusion, it becomes a moisture permeable outer heat insulating building where the moisture permeability and heat insulating properties are not impaired, and the conventional ventilation layer forming means in the outer heat insulating method becomes unnecessary.

  Further, the invention of another balcony construction method employing the Z-stripe panel of the present application is, for example, as shown in FIG. 7 (B), by using a conventional formwork, an outer wall formwork FW, a living section floor slab formwork FA, and a balcony floor. The slab formwork FB is constructed, and the Z-stripe panels 20 and 21 according to claim 1 are arranged so that the heat insulating layer 2B comes into contact with the concrete wall W, and the projecting portion AP of the Z-strip 1 is made of concrete. The projecting portions BP are arranged and held in the balcony floor slab form FB in the frame forms FA and FW, respectively, and the concrete is cast in the concrete frame forms FA and FW and in the balcony floor slab form FB, and the balcony. The floor slab SB is integrated with the concrete frame CF in a cantilevered form with only the Z-strip 1 and then aligned with the heat insulating layer 2B at the base end of the formed balcony floor slab SB. And tensioning the fiber-based heat insulating material on the outer surface of the bets outer wall is W, the outer base sheet, a method for tensioning the outside of the fiber-based heat insulating material via a mounting member.

In this case, mounting bolts are embedded in the concrete outer wall W in advance, and an angle-shaped receiving bracket is attached to the embedded and fixed bolt, and the angle-shaped receiving member is fixed to the receiving bracket, and the Z-stripe panel 20 , 21 with the same thickness as the heat insulating layer 2B, and a fiber heat insulating material is stuck to the concrete outer wall W, and the heat insulating layer is arranged on the outer surface of the concrete outer wall W, and the moisture permeability resistance is smaller than that of the heat insulating layer. The exterior base material (panel) may be stretched on the receiving material so as to cover the heat insulating layer.
Therefore, according to the construction method of the present invention, the construction of a cantilever supporting balcony can be constructed in a form that suppresses the thermal bridge by adopting the Z-strand panel of the present invention in the conventional post-pasting construction method, and is moisture permeable. The outer wall structure with the outer wall of concrete insulation can be rationally implemented.

  Further, in the invention of the outer wall structure provided with the balcony B of the present application, for example, as shown in FIG. 5, the reinforced concrete balcony floor slab SB is projected in a cantilevered form from the outer wall in which the concrete wall W is covered with moisture-permeable outer heat insulation. The balcony floor slab SB, which is provided, is thermally insulated from the concrete frame CF by the heat insulating layer 2B of the Z bar panels 20 and 21 having the supporting Z bars 1 and the heat insulating layer 2B. One half BP of Z bar 1 as a supporting reinforcing bar penetrating into concrete floor slab SB and the other half AP into concrete frame CF are fixed integrally by concrete placement, and only Z bar 1 is used to form concrete frame CF. On the other hand, as shown in FIG. 2 (A), the Z-strip 1 is cantilevered, with the Z top-strip 1U and the Z-bottom-strip 1D, a horizontal upper side 1U ', and an intermediate slope 1S. By Z truss muscle 1M consisting fine horizontal lower section 1d ', up and down, it is formed by integrating fixed keeping the stress center distance L15.

Therefore, in the outer wall structure of the present invention, the entire outer wall is heat-insulated and has moisture permeability, and the outer wall exhibits an outer heat insulating function without causing internal dew condensation. It is an excellent and energy-saving high-quality building.
Moreover, since the reinforced concrete balcony floor slab SB is also thermally insulated from the concrete outer wall W by the heat insulating layer 2B, the thermal bridge action on the concrete frame CF in the balcony floor slab SB is as follows. Only the concrete route is used, and the thermal bridge from the balcony B to the concrete frame CF can be greatly suppressed.

  Moreover, the reinforced concrete balcony floor slab SB is also held only by the Z bar 1, and the Z bar 1 has a Z upper end bar 1U and a Z lower bar bar 1D, and the Z truss bar 1M has a stress center distance L15. Since it is fully held and integrated vertically, it can exert a high supporting force, so the number of Z bars 1 used can be significantly less than the required number of connecting bars in the conventional examples 1 and 2, and the Z bar spacing The Z-strip panels 20 and 21 having the Z-stripes 1 can be easily arranged without interfering with the conventional floor slab bars.

Further, in order to cover the concrete wall W with moisture permeable outer heat insulation, the concrete outer wall W is made of a foamed plastic heat insulating layer 2B having a moisture permeability resistance smaller than that of the concrete outer wall W, and a magnesium cement having a moisture permeability resistance smaller than that of the heat insulation layer 2B. It is preferable to cover the plate 2A with a moisture-permeable heat insulating panel 2 which is layered and integrated.
In this case, the moisture-permeable heat insulation panel 2 can be adopted as an outer side-removal frame of the outer wall W, as in a conventional panel, By selecting and adopting the heat insulation layer 2B of the same thickness, the mold framework of the balcony floor slab can be placed on the composite panel 2 as the outer mold plate of the outer wall W with the Z-stripe panels 20 and 21 and the heat insulation layer 2B aligned. If it is, construction becomes easy.

In the Z bar panels 20 and 21 of the present invention, the Z upper bar 1U and the Z lower bar 1D are integrated while maintaining the required stress center distance L15 in the vertical direction, so that the floor slab SB of the reinforced concrete balcony B is provided. In terms of support, the upper end muscle for tensile drag and the lower end muscle for compression drag are arranged separately, and the support strength is 3.64 times as large as the structural calculation. The arrangement | positioning space | interval in 1 Z-stripe panel 20 and 21 can be enlarged.
Therefore, when the Z-strip panels 20 and 21 are placed in the formwork, the Z-strip 1 can be placed and set without interference with the conventional placement in the balcony floor slab SB and the living part floor slab SA. Muscle work becomes easy.

And since the Z line | wire 1 becomes arrangement | positioning with few numbers, the damage of the heat insulation layer 2B in the Z line | wire 1 also decreases, and the heat insulation repair after Z line | wire 1 penetration of the heat insulation layer 2B becomes easy.
Moreover, since the Z-stripe panels 20 and 21 are manufactured at the factory, they can be prepared as a homogeneous and reliable product, and the Z-stripe panels 20 and 21 are small and simple because there are few Z-stripes 1 in the panel. The outer structure makes it easy to store and transport, and the adoption of the Z-stripe panels 20 and 21 facilitates the construction and deployment of cantilevered balconies B that maintain uniform safety standards in a wide area. Become.

  Further, in the invention of the method for constructing the cantilevered balcony B on the outer heat insulating outer wall, after the outer formwork F0 of the outer wall is erected by the composite panel 2 having a long formwork, the short Z-stripe panel 20 is provided. Alternatively, since the heat insulating layer 2B is aligned and placed on the composite panel 2, the Z-stripe panels 20 and 21 are arranged and constructed for the balcony floor slab form FB and the living section floor slab form. It can be constructed at the time of bar arrangement to FA, and the Z bar panels 20 and 21 as a single unit are small and easy to handle, and the Z bar 1 has a strong support force, so the number of Z bars is small. Combined with the wide spacing of the muscles 1, the floor slab muscles to the floor slabs inside the Z-stripe panels 20 and 21 (residential floor slab SA) and the outside floor slab (balcony floor slab SB) Arrangement and holding work of Z-strip 1 without interference with conventional bar arrangement You can row, good workability of the arrangement and type framework Z muscle panel.

Moreover, in the invention of the outer wall structure provided with the cantilever supporting balcony B, the entire outer surface of the outer wall is thermally insulated and the coating layer is moisture permeable. The durability of the building will be improved, and it will be a high-quality building that can save energy and maintain a good living environment in terms of health.
And the thermal bridge action from the balcony floor slab SB to the concrete frame CF is also only the route of balcony concrete → Z-strip 1 → residential side concrete, and the thermal bridge action can be greatly reduced.
Moreover, since the Z-stripe panels 20 and 21 for constructing balconies are manufactured as safe and homogeneous panels in the factory and delivered to the necessary construction sites, they are strong even in different construction areas at remote locations. The highly reliable cantilevered balcony B can be constructed uniformly, and the balcony B can be provided and spread under a safe unified standard.

[Balcon shape (Figure 5)]
FIG. 5 is a partially cutaway perspective view of the balcony B to be implemented. As shown in FIG. 5, the balcony B has a thickness of the outer surface of the concrete outer wall W having a wall thickness TW of 180 mm as a load-bearing wall of the concrete frame CF. The composite panel 2 having a T1 of 87 mm is covered and is projected from the outer surface of the concrete outer wall W in a cantilevered manner.
Then, the balcony floor slab SB is held with respect to the concrete frame CF only by the supporting Z-strip 1 and the Z-strip panels 20 and 21 are used in which the Z-strip 1 as a supporting iron bar is penetrated and held in the heat insulating layer 2B. Then, one half of the protruding portion BP of the Z-strip 1 is integrally fixed in the balcony floor slab SB, and the other half of the protruding portion AP is integrally fixed in the living portion floor slab SB (concrete frame CF) by concrete placement. .
Then, the balcony B to be constructed is provided with a parapet P having a depth LB of 1500 mm and a thickness TB of 180 mm, and a long side tip edge having a height T7 of 50 mm and a width T6 of 150 mm.

[Use panel (Fig. 1, Fig. 2, Fig. 3)]
As the panels to be used, the composite panel 2 covering the concrete outer wall W, the Z-strand panel 20 for projecting the balcony B between the upper and lower composite panels 2, and the balcony B at the entrance / exit portion where the composite panel 2 does not exist above. 3 types are prepared with the Z-stripe panel 21 for projecting.
And the composite panel 2 prepares the unprocessed composite panel 2 for general walls, and the composite panel 2 for balconies which shortened the vertical height.

1A is a perspective view of the Z muscle panel 20, FIG. 1B is a longitudinal sectional view of the Z muscle panel 20, and FIG. 1C is attached to the Z muscle panels 20 and 21. It is a perspective view of the seat board 7 to do.
2A is a front view of the Z-strip 1 that penetrates the Z-strip panels 20 and 21, and FIG. 2B is a partially enlarged view of FIG. 2A. ) Is a plate-like heat insulating layer for the Z-stripe panel 20, and FIG. 2D is an overall perspective view of the cross joint 8.
3A is an overall perspective view of the composite panel 2, and FIG. 3B is an overall perspective view of the Z-stripe panel 21.

  As shown in FIG. 2C, the Z-stripe panel 20 is provided with a foamed plastic heat insulating layer 2B (JIS 9511) having a thickness T3 of 75 mm, a height 20 h of 200 mm, and a width Bw of 900 mm, and a dimension L2 from both sides in the width direction. Two vertical holes having a width of 40 mm and a length of 135 mm are formed at the position of (225 mm) as a Z-muscle insertion hole H1 with an interval L1 (450 mm), and are formed on the upper end surface SU and the lower end surface SD. A flat shallow groove 9 having a width X1 ′ of 45 mm and a depth Y3 of 3 mm, and a slit groove 9 ′ having a width X3 of 3 mm and a depth Y2 ′ of 53 mm at the center in the width direction, Arrange across.

In each insertion hole H1, as shown in FIG. 2 (A), a Z upper end line 1U and a Z lower end line 1D are formed by a truss including a horizontal upper side part 1U ', an intermediate inclined part 1S, and a horizontal lower side part 1D'. The Z-strip 1 that is integrated while maintaining the stress center distance L15 in the vertical direction with the streak 1M is inserted, and the insertion circular holes H2, H2 ', and H3 are provided on one outer surface of the insertion hole H1 in the form of a long hole. A plastic seat plate 7 having a thickness of 3 mm is adhered and fixed, and the heat insulating material 2E is filled around the Z-strip 1 in the insertion hole H1, and the seat plate 7 is used as a stopper in the insertion hole H1, A Z-stripe panel 20 is obtained by filling and injecting a fireproof covering material and / or in-situ foamed urethane.
In this case, the diameter of each of the insertion circular holes H2, H2 ′, H3 is set to be slightly larger (standard: 3 mm larger) than the diameters of the Z upper muscle 1U, the Z lower muscle 1D, and the Z truss 1M.

As shown in FIG. 3 (B), the Z-strip panel 21 has a 12 mm thick magnesium cement plate 2A attached to the outer upper surface of the heat insulating layer 2B. The height 21h is high (standard: 253 mm) by the amount (upper and lower height of the magnesium cement plate 2A: 53 mm), and the lower end surface SD is provided with a shallow groove 9 and a deep slit groove 9 ′. However, the upper end surface SU is flat.
Then, the Z-strand 1 for supporting the balcony penetrates and holds the same thing as the Z-stripe panel 20.

  That is, the Z-stripe panel 20 and the Z-stripe panel 21 are used in a sandwiched form between the upper and lower composite panels 2 as shown in FIG. As shown in FIG. 6B, since the upper side of the balcony B is the entrance door 13, the heat insulating layer 2B is extended upward, and the outer surface of the heat insulating layer 2B of the extending portion is covered with the magnesium cement plate 2A. Yes, the support function of the balcony floor slab SB is exactly the same for both Z-stripe panels 20, 21.

As shown in FIG. 3 (A), the composite panel 2 has a magnesium cement plate 2A (from Nittobo Co., Ltd.) having a thickness T2 of 12 mm, a width Aw of 900 mm, a height 2h of 2500 mm and a light weight (10 kg / m ² ). EB thin board light (available as a trade name) is a panel with a thickness T1 of 87 mm, integrated with a foamed plastic insulation layer 2B having a thickness T3 of 75 mm, a width Bw of 900 mm, and a height of 2500 mm. In this case, the magnesium cement plate 2A and the heat insulating layer 2B provide a level difference d2 (standard: 10 mm) so that the left and right joints with the other panels 2 can be phase-separated.

The upper end surface SU and the lower end surface SD of the composite panel 2 are flat surfaces, and a slit groove 9 ′ having a width of 3 mm and a depth of 52 mm is disposed in the center of the heat insulating layer 2B in the width direction.
Then, a countersunk bolt insertion hole hb for the mold frame is formed at an appropriate position on the panel surface.
Moreover, the composite panel (not shown) for the general wall is the same panel as the composite panel 2 for the balcony, but the height is the height of the composite panel 2 for the balcony (FIG. 3A) + the Z floor panel 20 height. The dimensions (standard: 2700 mm) and the top and bottom connections of the panels can be phase-bonded in the same way as the left and right connections. That is, as shown in FIG. 6C, the heat insulation layer 2B can be formed to form the horizontal joint dx. The upper part projects d5 (standard: 40 mm) and the lower part enters d6 ′ (standard: 20 mm).

[Z-strip (Fig. 2)]
As shown in FIG. 2 (A), the Z line 1 is composed of a Z upper end line 1U for tensile stress load and a Z lower end line 1D for load of compressive stress on a balcony B, a horizontal upper side part 1U 'and an intermediate inclined part. A Z truss reinforcement 1M having 1S and a horizontal lower side 1D 'is integrally welded and fixed vertically while maintaining a stress center distance L15.
In other words, the Z bar 1 is a member that supports the floor slab SB of the reinforced concrete balcony B of the cantilever support type, and the resistance to the bending stress (compressive stress, tensile stress) generated by the fixed load + the load loaded by the balcony B is not The bending moment M is expressed by M = at × ft × j, which is determined by the diameter and interval of the steel bars fixed on the concrete frame CF side from the balcony B.

Here, at is the cross-sectional area of the tensile reinforcement, ft is the allowable tensile stress of the reinforcing bar, and j is the stress center distance of the bending material.
Even if the same reinforcing bar is adopted, it is important to maintain the stress center distance of the reinforcing bar, so in the present invention, as shown in FIGS. 1U and the Z lower bar 1D are welded and fixed with a Z truss bar 1M composed of a horizontal upper side 1U ′, an intermediate inclined part 1S and a horizontal lower side 1D ′, and the stress of the bending material (Z upper bar 1U + Z lower bar 1D) A center distance L15 (distance between the axial centers of the Z upper end muscle 1U and the Z lower end muscle 1D) is secured.

  Further, the diameter and length of the reinforcing bar may be determined from the economical efficiency and performance (displacement 1/400 or less) for the balcony floor slab SB to be applied. For example, the depth LB in FIG. 5 is 1500 mm and the thickness TB is 180 mm. In the case of the Z reinforced concrete balcony B with two Z bars arranged at 450 mm intervals (two on each Z bar panel 20), the Z upper bar 1U and the Z lower bar 1D have a diameter of 25 mm compared to the 22 mm bar diameter. If a reinforcing bar is used, the fixing length can be shortened by 56 mm for the Z upper bar 1U and 33 mm for the Z lower bar 1D, but the weight increases by 1.5 kg and the material cost increases.

Of course, a steel bar with a diameter of 25 mm has a margin of 68% in strength (a diameter of 22 mm is 58%), and the displacement at the base end of the balcony B is 0.3 mm, which is the same as the diameter of 22 mm. Is 1.5 mm (diameter 22 mm is 2.0 mm) and displacement is 1/752 (diameter 22 mm is 1/596), so that strength and displacement performance are improved.
The following is a comparison of trial calculations of the case where the steel bars used have a diameter of 19 mm, a diameter of 22 mm, and a diameter of 25 mm and are applied to the balcony B of FIG.

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 / location) 4.7 6.0 7.5
Application price (yen / location) 298 381 475
Strength margin 43% 58% 68%
Displacement of balcony tip (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
Displacement 1/482 1/596 1/711

The Z truss bars 1M are all formed of a deformed steel bar having a diameter of 16 mm in the same form.
Further, the total length of the Z upper end muscle 1U is 810 mm for a diameter of 19 mm, 525 mm for a diameter 22 mm, and 470 mm for a diameter 25 mm in calculation. The Z lower end 1D has a diameter of 19 mm, 520 mm, a diameter of 22 mm, 345 mm, and a diameter of 25 mm, which is 320 mm.

  Further, in the Z truss bar 1M, the intermediate inclined portion 1S gives rigidity over the entire width T3 (75 mm) of the heat insulating layer 2B of the Z bar panel 20 as shown in FIG. 2B is provided with a rigid function equivalent to that of the cast concrete, and the tensile stress of the Z upper end muscle 1U caused by the bending moment of the balcony floor slab SB is borne (the tension applied to the Z truss bar inclined portion 1S is approximately Although it is 600 kg, the strength of the Z truss muscle 1M having a diameter of 16 mm is 15% and there is still a margin of 85%), and the stress center distance L15 is applied between the Z upper muscle 1U and the Z lower muscle 1D.

Therefore, the Z bars 1 employed in the embodiment of the present invention (FIG. 5) are arranged in one sheet of each Z bar panel 20 in a floor slab SB having a depth LB of 1500 mm and a thickness slab SB of 180 mm. In order to arrange two pieces, that is, at an interval L1 of 450 mm, as shown in FIG. 2 (A), as a Z upper end bar 1U, a deformed steel bar having a length L10 of 1200 mm and a diameter of 22 mm is used as a Z truss bar 1M. This is a deformed steel bar with an intermediate inclined portion 1S inclined at 45 °, a Z-shaped height L14 of 70 mm, a horizontal upper side 1U ′ and a horizontal lower side 1D ′ of 80 mm. The horizontal upper side portion 1U ′ is in contact with the lower surface of the Z upper end muscle 1U and welded from both sides to form a fixed portion ZU, and the horizontal lower side portion 1D ′ is the upper surface of the Z lower end muscle 1D. Is welded from both sides to form a fixed portion ZD, and the Z upper end 1 And the stress center distance L15 between the Z bottom muscle 1D and 92 mm, and is intended to be transmitted to the intermediate inclined portion 1S smooth tensile force Z upper muscle 1U.
Then, as shown in FIG. 2 (A), the epoxy resin paint (ESK Kaken Co., Ltd., trade name: fireproof coat undercoat material) excellent in anticorrosion, adhesion and heat insulation over the entire length of the Z-strip 1 is rust-prevented. The paint 1B is applied twice, and a fire-resistant paint 1A (Ske Kaken Co., Ltd., trade name: SK fire-resistant coat) is further applied to the portion located in the heat insulating layer 2B.

[Cross joint (Fig. 2 (D))]
FIG. 2D is an overall perspective view of the cross joint 8. The cross joint 8 includes the balcony composite panel 2 and the Z-strip panel 20 or Z-strip as shown in FIGS. 6A and 6B. It is a member used when connecting the panel 21 up and down.
That is, as shown in FIG. 2 (D), the cross joint 8 includes a vertical blade 8F for fitting into the Z-strip panels 20 and 21 and the slit groove 9 ′ of the balcony composite panel 2, and the Z-strip panels 20 and 21. This is a heat-insulating plastic molded product with a wall thickness of 3 mm, in which a horizontal blade 8M for seating in a shallow groove 9 is provided in a cross-sectional shape.

  The dimensional relationship is determined by the relationship between the groove 9 and the slit groove 9 ′ arranged in the Z stripe panels 20 and 21 and the composite panel 2 to be applied, and the length Z of the cross joint 8 is 50 mm. The vertical blade 8F has a total length Y1 of 103 mm and is slightly shorter (standard 50 mm) than the slit groove 9 ′ (standard depth: 53 mm) of each panel 2, 20, 21 above and below the horizontal blade 8 M. The horizontal blade 8M has a total length X1 of 45 mm and is provided with a double-sided adhesive tape 8A on the upper and lower surfaces.

[Construction of balcony B (Fig. 4)]
FIG. 4 is a longitudinal side view of a state in which the balcony floor slab SB is constructed by the Z-stripe panel 20.
As shown in FIG. 4, the balcony composite panel 2 is formed as an outer wall outer mold F0 with the magnesium cement plate 2A as the outer surface, and the outer wall inner mold F1 and the outer wall mold FW by a conventional mold frame means together with the outer wall inner mold F1. The living section floor slab mold FA is formed on the inner side of the composite panel 2 and the balcony floor slab mold FB is formed on the outer wall of the composite panel 2 on the outer wall mold FW by conventional mold means. .

Next, at the site where the outer wall W is disposed above the balcony floor slab SB, the Z-strain panel 20 shown in FIG. 1 manufactured and prepared in advance at the factory is aligned and connected to the upper end of the composite panel 1.
In this case, the cross joint 8 is arranged in a proper position, the horizontal blade 8M is seated in the shallow groove 9 of the Z-stripe panel 20, and is adhered to the lower composite panel 2 and the upper Z-stripe panel 20 with the double-sided adhesive tape 8A. At the same time, the vertical blade 8F is fitted into the slit groove 9 'of the lower composite panel 2 and the upper Z-strip panel 20, and the heat insulation layer 2B is aligned and abutted on the lower composite panel 2. Connect up and down to form.
The projecting portion AP of the Z muscle 1 projecting into the residential floor slab formwork FA and the projecting portion BP of the Z muscle 1 projecting into the balcony floor slab formwork FB are respectively formed from the Z muscle panel 20. In FA and FB, the position is held by the spacers 12A and 12B, and if necessary, the floor slabs are fixed with the reinforcing bar and the wire and fixed in the mold.

Next, when concrete is placed in each formwork FW, FA, FB, and the formwork is disassembled after the cast concrete is hardened, the concrete frame CF is cut into pieces with only the Z bars 1 shown in FIG. A supported concrete floor slab SB can be constructed.
In addition, the construction of the concrete floor slab SB on the upper floor is similar to the existing concrete floor slab SB, as shown in FIG. 6A, on the upper surface of the Z-strand panel 20 of the hardened concrete floor slab SB, The composite panel 2 for balconies is placed and connected through the Z, and the Z-strand panel 20 is placed and connected to the upper surface of the composite panel 2.

Further, in the area where the balcony floor slab SB is above the entrance door 13 and the outer wall W does not exist, the Z-strip panel 21 shown in FIG. 6B, the bottom of the entrance door 13 has a small heat insulating layer 2B provided with a magnesium cement plate 2A on the outer surface from the balcony floor slab SB, as shown in FIG. 6 (B). It protrudes and covers the small rising part of the concrete wall W.
Moreover, in the general wall part where the balcony floor slab SB does not exist, the composite panel 2 for the general wall having the height of the floor (standard: 2700 mm) is used as a conventional outer wall outer formwork, and concrete is placed. The outer surface of the concrete wall W is covered with a moisture-permeable outer heat insulation with the composite panel 2 for general walls.

[Finish (Fig. 5)]
On the floor slab concrete surface Sf of the constructed balcony B, as shown in FIG. 5, a conventional roofing is placed and a waterproof seat waterproof layer 3 is stretched, and a rising waterproof layer 3 ′ is also provided on the rising part of the balcony. A conventional waist drainer 4 with the same role as Kasagi is placed.
In this case, the connecting surface between the balcony composite panel 2 and the Z-stripe panel 20 or 21 is the peripheral edge 2C on the front and rear sides of the heat insulating layer 2B and the horizontal blade 8M of the cross joint 8 and the interface between the heat insulating layers 2B of the upper and lower panels. There is a shallow groove 9 (depth 3 mm, width 45 mm) that is in contact with and fitted with the cross joint 8. However, since both ends of the groove 9 are closed by finishing, the gap of the groove 9 is sealed. Thus, the function of the air insulation layer is exhibited, and the outer heat insulation function for the concrete wall W is not lowered.

In addition, since the concrete wall W is covered with the composite panel 2 in which the heat insulating layer 2B and the magnesium cement plate 2A are layered and integrated, the outer wall is finished with magnesium cement having a moisture permeability resistance of 14 m ² hmmHg / g. Moisture permeable waterproof type multi-layer coating agent (trade name: New Topless Screen (JISA6909), Dan-to-cast (JISA6012), moisture permeable elastic tile (equivalent to SK Kaken Co., Ltd.) JISA6909)), or multi-layer coating agent (SK Kaken Co., Ltd. trade name: Renalak (JISA6909), silica tile (JISA6909)), exterior thin coating agent (SK Kaken Co., Ltd. trade name: Shipaken (JISA6909), Silica lysine (JISA6909)) spray coating finish or Fuko Co., Ltd. FMX ( Product name), lime coat (product name) and other painted wall finishes.

[Modified example of Z-stripe panels 20 and 21 (FIG. 7A)]
FIG. 7 (A) is a modification of the Z-stripe panel 21 and has a larger protruding dimension above the heat insulating layer 2B than the embodiment panel of FIG. 3 (B). The protrusion AP of the Z bar 1 toward the concrete frame side is bent downward so that it can be placed in the concrete wall W, and the fixing plate 1C is fixed to the tip of the bent part of the Z bar 1 by welding and short bending. The protrusion part AP enables a strong support of the balcony floor slab SB.

Therefore, when the balcony floor slab SB is positioned below the floor slab SA on the concrete frame CF side in order to bend the concrete frame CF side protrusion AP of the Z reinforcement 1 and exhibit the necessary fixing strength in the concrete outer wall W. However, the Z-strip panel 21 enables cantilever support of the balcony floor slab and is sandwiched between the upper and lower balcony composite panels 2, that is, even when the outer wall W exists above the balcony B, the Z-strip panel. The concrete frame side protrusion AP of the 20 Z bars 1 can be bent downward, and the bent Z line protrusion AP can be fixed by the concrete outer wall W.
In this case, according to the level difference between the balcony floor slab SB and the concrete floor slab SA, the protruding length of the Z-skin panel 21 upward of the heat insulating layer 2B, that is, the heat insulating layer 2B portion with the magnesium cement plate 2A attached to the outer surface What is necessary is just to adjust the protrusion length of.

[Post-sealing insulation method (Fig. 7 (B))]
FIG. 7B shows a method in which the composite panel 2 for balconies is not used as the outer wall formwork F0 of the outer wall W, and the outer wall formwork FW is constructed of a conventional concrete template without using a discarded formwork frame. The Z floor panel 20 is inserted between the balcony floor slab form FB and the living part floor slab form FA, that is, the concrete frame side protruding part AP of the Z line 1 is placed in the living part floor slab form FA. Inside, the balcony-side protruding part BP is extended and arranged in the balcony floor slab formwork FB, and the concrete formwork is constructed so that the heat insulating layer 2B of the Z-strand panel 20 is located on the outer surface of the concrete wall W. By constructing, the living part floor slab SA, the concrete outer wall W and the balcony floor slab SB are integrally constructed with the Z-strip 1 and, as a post-construction, the heat insulating material for the outer heat insulation is the same thickness as the heat-insulating layer 2B of the Z-strip panel 20 And Coated on cleat outer wall W, it is to stretched outer base material (not shown) on the outer surface of the covering insulation concrete outer wall W.

  Therefore, the Z-stripe panels 20 and 21 of the present invention adopt the balcony composite panel 2 as the outer formwork of the outer wall W as in the embodiment (FIGS. 5 and 6), and make the concrete wall W an outer heat insulating structure. It can be used not only in the case of construction but also in the conventional post-bonding heat insulation method, and even in the post-bonding heat insulation method shown in FIG. By selecting and implementing heat insulating material → exterior base material → exterior finishing material and moisture permeability resistance from the indoor side to the outdoor side in order, a moisture permeable outer heat insulating outer wall can be formed.

[Modified example of vertical connection of Z-stripe panel (Fig. 8)]
FIG. 8 is a method used for vertical joining of the lower balcony composite panel 2 and the upper Z-stripe panel 20 and is used instead of the vertical joining method of the cross joint 8 of FIG. Is.
8A is a perspective view of a U-shaped fixing device (hereinafter referred to as a C-type joint), and FIG. 8B is a sectional view of the C-type joint in use, FIG. These are the use explanatory drawings of a C type joint.
As shown in FIG. 8 (A), the C-type joint 15 is a plastic molded product having a general wall thickness of 3 mm. The C-type joint 15 stands from the square bottom plate 15D and both side ends of the bottom plate 15D. And a vertical piece 15F sandwiching the heat insulating layer 2B of the composite panel 2 for a balcony. The vertical piece 15F is provided with an auxiliary vertical piece 15F 'standing up in a small size in an extended form, and the vertical pieces 15F on both sides. The auxiliary vertical piece 15F ′ is a form in which the vertical piece 15F on one side faces the auxiliary vertical piece 15F ′ on the other side.

  Each vertical piece 15F and the bottom plate 15D are provided with nail insertion holes H15 at appropriate positions. The dimensional relationship is that the length (X13) of the bottom plate 15D is 75 mm, and the lengths of the vertical pieces 15F + auxiliary vertical pieces 15F ′ on both sides. The length X11 is 100 mm, both sides protrude X15 (12.5 mm) from the bottom plate 15D, the length (X12) of the vertical piece 15F and the auxiliary vertical piece 15F ′ is 50 mm, and the height Y11 of the vertical piece 15F is 60 mm. The height Y12 of the auxiliary vertical piece 15F ′ is 15 mm, and the interval T3 (width of the bottom plate 15D) between the vertical pieces 15F on both sides is 75 mm, which is the same size as the thickness of the Z-strip panel heat insulating layer 2B.

  When the Z-stripe panels 20 and 21 are connected to the composite panel 2 by the C-shaped joint 15, the Z-stripe panel 20 (panel connecting the composite panel 2 up and down) is as shown in FIG. A notch G15 having a thickness of 3 mm for seating the bottom plate 15D of the C-shaped joint 15 flush with the upper end surface SU and the lower end surface SD of the heat insulation layer 2B of the Z-strand panel is the length in the wall direction of the bottom plate 15D. (Standard: 75 mm) + length for wall direction adjustment (standard: 10 mm), that is, a length of about 85 mm, and the bottom plate 15D is a heat insulating layer of the lower composite panel 2 as shown in FIG. 2B is fixed to the upper surface with plastic nails 15N, and the notch G15 of the Z-stripe panel 20 is seated on the bottom plate 15D, and the heat-insulating layer 2B of the Z-stripe panel 20 sandwiched between the vertical pieces 15F of the C-shaped joint 15 , Hit the plastic nail 15N from both sides Is Dressings.

In this case, since the vertical pieces 15F on both sides do not face each other, the nail 15N driven from the vertical pieces 15F on both sides can be fixed to the heat insulating layer 2B over a wide range without interference.
If a double-sided adhesive tape (not shown) is attached to the upper and lower surfaces of the bottom plate 15D, it is advantageous for the seating operation of the C-type joint 15.
Therefore, when the composite panel 2 for balcony and the Z-stripe panel 20 or 21 are vertically connected by the C-shaped joint 15, after the bottom plate 15D is fixed on the lower heat insulating layer 2B, the heat insulation of the upper Z-stripe panel is performed. Since the notch G15 of the layer 2B is seated on the bottom plate 15D, the notch G15 can be adjusted in position on the bottom plate 15D, and the notch G15 longer than the bottom plate 15D is placed on the heat insulating layer 2B of the Z-strand panel 20 Although it is necessary to form in the end surface SU and the lower end surface SD, the formation of the notch G15 is only processing to the small Z-stripe panels 20 and 21, and the groove 9 and the slit for the cross joint 8 of the embodiment. It is easier than the formation of the groove 9 ′, and the composite panel 2 for the balcony can be connected by the C-shaped joint 15 without any processing.

It is explanatory drawing of the Z-stripe panel 20 of this invention, Comprising: (A) is a whole perspective view, (B) is a longitudinal cross-sectional view, (C) is a perspective view of a seat board. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing of the Z line | wire panel 20 of this invention, Comprising: (A) is the whole Z line front view, (B) is the elements on larger scale of (A), (C) is a perspective view only of a heat insulation layer, (D ) Is a perspective view of a cross joint employed for connection of a Z-stripe panel. It is explanatory drawing of the panel used for this invention, Comprising: (A) is a perspective view of the composite panel for balconies, (B) is a perspective view of the Z-stripe panel 21. FIG. It is a partially notched front view of this invention formwork construction state. It is a whole perspective view of the cantilevered balcony constructed | assembled by this invention. It is explanatory drawing sectional drawing of this invention, (A) is the use condition figure of Z-stripe panel 20, (B) is the use condition figure of Z-stripe panel 21, (C) is the use condition explanation of the composite panel 2 for general walls. FIG. It is a modified example figure, (A) is a modification surface of a Z-strip, and (B) is a post-bonding heat insulation construction diagram of a Z-strip panel. It is a modified example figure, (A) is the whole perspective view of a C type joint, (B) is a use state sectional view of a C type joint, (C) is a use explanatory view of a C type joint. It is a figure 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 reinforcing bar unit top view. It is a figure of the prior art example 2, Comprising: (A) is a balcony longitudinal cross-sectional view, (B) is a connection reinforcing bar assembly state explanatory drawing, (C) is explanatory drawing of a heat insulating material.

Explanation of symbols

1 Z-strip 1A Fireproof paint 1B Rust prevention paint (heat insulation rust prevention paint)
1C Fixing plate 1D Z lower end line 1D 'Horizontal lower side part 1M Z truss line 1S Intermediate inclined part (inclined part)
1U Z upper end muscle 1U 'Horizontal upper side 2 Composite panel (moisture permeable insulation panel)
2A Magnesium cement board 2B Thermal insulation layer 2C Perimeter 2E Thermal insulation fire-resistant material (fire-resistant coating material)
3, 3 'Waterproofing layer 4 Waist draining 5 Angle coping 6 Handrail 6A Bottom plate 6B Post 7 Seat plate 8 Cross joint 8A Double-sided adhesive tape (double-sided tape)
8F Vertical blade 8M Horizontal blade 9 Groove 9 'Slit groove 10A, 10A' Template 10B Radius 10C Large pull 10D Pipe support 10E Vertical edge 10F Horizontal edge 11 Floor slab muscle 11A Long side upper edge 11B Long side lower edge 11C Short-side upper end bar 11D Short-side lower end bar 11E Wall vertical bar 12A, 12B Spacer 13 Entrance door 13A Drainer 13f Sill surface 14 Exterior finish 15 C-type joint 15A Double-sided tape 15D Bottom plate 15F Vertical piece 15F 'Auxiliary vertical piece 15N Nails (plastic nails)
20, 21 Z-stripe panel (heat insulation panel)

A living part
AP, BP Protrusion (Z muscle protrusion)
B Balcony Bb Balcony base end (base end)
CF concrete frame 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 Outer wall formwork G15 Notch hb Flat bolt insertion hole H1 Insertion hole (long hole)
H2, H2 ', H3 Insertion hole H15 Nail insertion hole (nail hole)
L15 Stress center distance P Parapet SA Residential part floor slab (concrete frame floor slab)
SB Balcony floor slab Sf, Sf 'Floor slab surface W Outer wall (concrete outer wall, concrete wall)
SD Lower end surface SU Upper end surface ZD, ZU fixing part

Claims (17)

  A Z-stripe panel (20, 21) for constructing a cantilevered balcony having a Z-stripe (1) penetrated and held in a foamed plastic-based heat insulating layer (2B), the heat-insulating layer (2B) having a thickness (T3) Is the same thickness as the heat insulation layer (2B) for covering the concrete wall (W) with heat insulation, and the height (Bh) is at least the floor slab thickness (TB) of the balcony (B) to be formed, (1) is a Z truss bar (1M) consisting of a Z upper bar (1U) and a Z lower bar (1D) consisting of a horizontal upper side (1U '), an intermediate inclined part (1S) and a horizontal lower side (1D'). ), With the stress center distance (L15) maintained vertically, and the half protrusion (BP) of the Z-strip (1) is a fixed part in the balcony floor slab (SB) The other half of the protrusion (AP) is the fixed part in the concrete frame (CF) Z-stripe panel for building the cleat balcony (B) into a concrete frame (CF) under the control of a thermal bridge.   The Z line (1) penetrates the insertion hole (H1) in the shape of a long hole in the vertical direction of the heat insulating layer (2B), and the Z line (1) is formed by the heat insulating refractory material (2E) in the insertion hole (H1). The Z-stripe panel according to claim 1, wherein   The Z-stripe panel according to claim 2, wherein one surface of the insertion hole (H1) is fastened and closed with a seat plate (7) provided with Z-hole insertion circular holes (H2, H2 ', H3) on the top and bottom.   The Z hole insertion holes (H2, H2 ′, H3) of the seat plate (7) hold gaps with the insertion reinforcing bars (1U, 1M, 1D), and the gaps are filled and closed with urethane foam on-site. The Z-stripe panel of claim 3.   The Z-strip (1) has the intermediate slope (1S) of the Z-truss (1M) inclined over the entire width (T3) of the heat-insulating layer (2B) to give the heat-insulating layer (2B) a rigid structure function. The Z-stripe panel according to any one of claims 1 to 4.   The Z line (1) has an intermediate inclined part (1S) of the Z truss line (1M) inclined at 45 °, and a fixing part (ZU) with the Z upper end line (1U) is a protruding part to the balcony side. Z of any one of Claims 1 thru | or 5 in which the adhering part (ZD) with Z lower end reinforcement (1D) is a proximal end of the protrusion part (AP) to a concrete frame side at the base end of (BP). Muscle panel.   The Z line (1) is coated with a fireproof paint (1A) in the heat insulating layer (2B), and a heat insulating rust preventive paint (1B) is applied to the protrusions (AP, BP) on both sides. The Z muscle panel of any one item.   A wide shallow groove (9) is arranged over the entire length of the upper end surface (SU) and the lower end surface (SD) of the heat insulating layer (2B), and a narrow and deep slit is formed at the center of the width of the groove (9). Z-stripe panel (20) according to claims 1 to 7, wherein the grooves (9 ') are arranged over the entire length.   A wide shallow groove (9) is disposed over the entire length of the lower end surface (SD) of the heat insulating layer (2B), and a narrow and deep slit groove (9 ') is disposed at the center of the width of the groove (9). The side of the balcony floor slab is placed with the magnesium cement plate (2A) with the upper end flush with the upper surface of the heat insulation layer (SU) and the lower end abutting the upper end of the balcony floor slab (SB). A Z-stripe panel (21) according to claims 1-7.   A composite panel (2) for moisture-permeable outer heat insulation in which a magnesium cement plate (2A) and a foamed plastic heat insulating layer (2B) are layered, and an outer wall outer formwork (F0) with the magnesium cement plate (2A) as an outer surface. The outer wall formwork (FW) is constructed together with the outer wall formwork (F1), and the living room floor slab formwork (continuous to the outer wall formwork (FW) is formed on the inner side of the composite panel (2). FA) is formed to construct concrete frame formwork (FW, FA), balcony floor slab formwork (FB) is constructed outside the composite panel (2), and the composite panel (2) is billed The Z-stripe panel (20, 21) according to Item 1 is connected to the heat-insulating layer (2B) of the composite panel (2) by aligning the heat-insulating layer (2B) of the Z-stripe panel (20, 21). 1) Protruding part (BP) in balcony floor slab formwork (FB), Z The projecting part (AP) of (1) is placed in the concrete frame formwork (FW, FA), concrete is placed in each formwork (FW, FB, FA), and the balcony floor slab (SB) is placed. For the concrete frame (CF) covered with heat insulation with the composite panel (2), the cantilever support balcony (B) to the outer heat insulation outer wall is built in a cantilever support form with only Z-strip (1). Construction method.   A slit groove (9 ') is formed in the center of the heat insulating layer (2B) of the upper end surface (SU) and the lower end surface (SD) of the composite panel (2), and the Z-strip panel (20) In the upper end surface (SU) and the lower end surface (SD), in the Z-strand panel (21), the lower end surface (SD) has a wide shallow groove (9) and a groove (9 ) Formed a slit groove (9 ') at the center of the width, and was provided with a horizontal blade (8M) and a vertical blade (8F) for vertical alignment connection between the composite panel (2) and the Z-stripe panel (20, 21). Construction according to claim 10, wherein the cross blade (8) is used and the vertical blade (8F) is implemented by fitting the lower composite panel (2) and the upper Z-stripe panel (20) into each slit groove (9 '). Method.   The construction method according to claim 10 or 11, wherein the Z-strip protrusion (AP) of the Z-strip panel (20, 21) is bent downward from the intermediate part and disposed in the outer wall formwork (FW).   13. The construction method according to claim 12, wherein when the Z-line protruding part (AP) is bent and arranged downward, the fixing plate (1C) is attached to the bent part tips of the Z upper-end line (1U) and the Z-lower line line (1D). .   The concrete outer wall (W) covers the entire surface including the general wall portion with a moisture permeable outer heat insulating composite panel (2), and from the indoor side to the outdoor direction, the concrete wall (W), the heat insulating layer (2B), magnesium Request to finish the outer wall with cement board (2A) and exterior finish material (14) such as moisture permeable tiles, which are arranged sequentially from large to small in moisture permeability resistance and smaller in moisture permeability resistance than magnesium cement board (2A) Item 14. The construction method according to any one of Items 10 to 13.   The outer wall formwork (FW), the living part floor slab formwork (FA), and the balcony floor slab formwork (FB) are constructed by a conventional formwork, and the Z-stripe panel (20, 21) according to claim 1 is insulated. The layer (2B) is arranged so as to be in contact with the concrete wall (W), and the protrusion (AP) of the Z-strip (1) is placed in the concrete frame formwork (FA, FW). BP) is placed and held in the balcony floor slab formwork (FB), and concrete is placed in the concrete frame formwork (FA, FW) and in the balcony floor slab formwork (FB). ) To the concrete frame (CF) in a cantilevered support form with only Z-strip (1), and then aligned with the insulation layer (2B) at the base end of the formed balcony floor slab (SB) , On the outer surface of the concrete outer wall (W) And tensioning the 維系 insulation to tensioning outside the fiber-based heat insulating material the outer base member via a mounting member, method for constructing a cantilevered balcony to external insulation exterior walls.   It is an outer wall structure in which a reinforced concrete balcony floor slab (SB) is projected in a cantilevered form from an outer wall in which a concrete wall (W) is covered with moisture-permeable outer heat insulation, and the balcony floor slab (SB) is used for support. Z as a supporting reinforcing bar that is thermally insulated from the concrete frame (CF) by the heat insulating layer (2B) of the Z bar panel (20, 21) having the Z bar (1) and penetrates the heat insulating layer (2B). One half (BP) of the reinforcement (1) is fixed in the concrete floor slab (SB) and the other half (AP) in the concrete frame (CF). Is supported by the concrete frame (CF) in a cantilevered manner. The Z line (1) has a Z upper end line (1U) and a Z lower end line (1D), a horizontal upper side part (1U '), and an intermediate inclined part. (1S) and horizontal lower side ( By Z truss muscle consisting D') (1M), up and down, it is formed by integrating fixed keeping the stress center distance (L15), an outer wall structure having a cantilevered balcony (B).   The concrete outer wall (W) is layered with a foamed plastic heat insulating layer (2B) having a moisture permeability resistance smaller than that of the concrete outer wall (W) and a magnesium cement plate (2A) having a moisture permeability resistance smaller than that of the heat insulation layer (2B). The outer wall structure according to claim 16, which is covered with an integrated moisture-permeable heat insulating panel (2).

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