JP2012193501A - Method for constructing external insulation wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simultaneous concrete placing method for constructing an external insulation wall, having a plurality of heat insulation plates 2a and 2b which are laminated for installation of an insulation structure, with improved construction efficiency.SOLUTION: A substrate material 3 disposed on one exposed surface of a plurality of laminated insulation plates 2a and 2b is combined with the insulation plates 2a and 2b into a composite plate 1. The composite plate 1 is installed between formworks 9a and 9b, with the substrate material 3 on the outer side of a building, and concrete is placed to construct a concrete skeleton 14 integrated with the composite plate 1. An exterior material is then fixed to the substrate material 3.

Description

  The present invention relates to a method for constructing an outer heat insulating wall by a simultaneous driving method using a heat insulating plate of a synthetic resin foam.

  Conventionally, after adhering a heat insulating plate made of synthetic resin foam to a concrete frame, it is known to construct an outer heat insulating wall by attaching an exterior material as a receiving material to the channel material fitted in the guide groove of this heat insulating plate. (For example, refer to Patent Document 1). In addition, a simultaneous placement method is known in which concrete is placed in a mold frame provided with a heat insulating plate made of a synthetic resin foam, and a heat insulating plate is attached simultaneously with the construction of a concrete frame (for example, Patent Documents). 2).

JP 2008-156874 A JP 2004-107942 A

  By the way, with the recent increase in heat insulation, it is performed that a plurality of heat insulating plates are attached in a general building. In addition, when building a freezer warehouse or the like, it is not uncommon to stack a plurality of heat insulating plates.

  When using the simultaneous placement method and stacking multiple insulation plates as described above, the innermost insulation plate can be installed by the simultaneous placement method, but the remaining insulation plates are constructed of concrete frames. It will be attached later. The remaining heat insulating plates are attached to the innermost heat insulating plate attached at the time of construction of the concrete frame by, for example, bonding with an adhesive, or anchor pins are driven into the concrete frame and fixed. Moreover, if a channel material is attached to the heat insulation board of the most outdoor side, an exterior material can be attached to this.

  However, if a heat insulating plate that cannot be attached at the time of the simultaneous placement method is attached after the construction of the concrete frame, there is a problem that workability is poor. That is, since the concrete frame for the wall is constructed with a height of 1800 mm to 3000 mm, it takes time and effort to erect and bond or pin the heat insulating plate along the surface of such a height, and the construction efficiency is high. There is a bad problem.

  The present invention has been made in view of the above problems, and it is intended to improve the construction efficiency when constructing the outer heat insulating wall of the heat insulating structure in which a plurality of heat insulating plates are overlapped and installed by the simultaneous driving method. Objective.

  For the above purpose, the present invention provides a method for constructing an outer heat insulating wall by a simultaneous driving method using a heat insulating plate of a synthetic resin foam, at a predetermined interval on one exposed surface of a plurality of stacked heat insulating plates. The provided base material and the plurality of heat insulating plates are combined to form a composite plate, the one exposed surface of the composite plate is set to the outer surface side of the building, and the concrete plate is disposed between the other exposed surface and the formwork. The construction method of the outer heat insulation wall is characterized in that, after the concrete body having the heat insulating plate integrally formed is constructed, an exterior material is attached to the base material.

In the present invention, a receiving groove is formed at the position of the base material on the one exposed surface, while a U-shaped channel material is used as the base material, and the base material that is the U-shaped channel material is a U-shaped channel material. The both leg portions are inserted into the heat insulating plate constituting the one exposed surface and provided in the receiving groove, and the bolt material is passed through the plurality of heat insulating plates from above the base material, to the tip of the bolt material. By screwing and tightening the nut material, the base material and the plurality of heat insulating plates are combined, and the head of the bolt material is accommodated within the depth of the receiving groove,
A spline groove is formed on the side surface of any one of the heat insulating plates of the composite plate, and a thin plate-like spline is inserted across the opposing spline grooves of the composite plate installed adjacent to each other,
By using a smaller heat insulating plate constituting the one exposed surface than the other heat insulating plate, the outer peripheral surface of the heat insulating plate constituting the one exposed surface is retracted inside the outer peripheral surface of the other heat insulating plate. Forming a seal groove along the seam on the one exposed surface side of the composite plate arranged adjacent to each other, and filling the seal groove with the seal material before attaching the exterior material It is included as a preferred embodiment.

  According to the present invention, since a composite plate in which a base material for attaching an exterior material and a plurality of heat insulating plates are combined is used for the simultaneous placing method, a plurality of heat insulating plates are formed simultaneously with the formation of the concrete frame by the simultaneous placing method. Installation is completed. In addition, the base material and the plurality of heat insulating plates can be combined in advance at the factory, but even when performed on site, the heat insulating plate can be laid sideways so that workability is good. Therefore, the construction efficiency is improved as compared with the case where the installation work of the heat insulating plate has to be performed even after the concrete frame is formed.

  Other effects of the present invention will be described together with the embodiment.

It is a perspective view which shows an example of the composite board used for this invention. (A) is a top view of the composite board shown in FIG. 1, (b) is a bottom view of the composite board shown in FIG. FIG. 3 is an enlarged side view of the periphery of the base material in the composite plate shown in FIG. 1 and FIG. 2, (a) shows a state in the middle of mounting the base material, and (b) shows a state after completion of mounting of the base material. It is. It is a longitudinal cross-sectional view of the periphery of a formwork at the time of formation of the concrete frame by the simultaneous placing method using the composite board shown in FIGS. It is a cross-sectional view of the periphery of the mold at the time of formation of the concrete frame by the simultaneous driving method using the composite plate shown in FIGS. It is a longitudinal cross-sectional view around the concrete frame at the time of attachment of exterior material. It is a cross-sectional view around the concrete frame when the exterior material is attached.

  In the present invention, the outer heat insulating wall is constructed by the simultaneous driving method using the composite plate 1 as shown in FIGS. The composite plate 1 of this example is composed of two heat insulating plates 2a and 2b made of a rectangular synthetic resin foam and a plurality of base materials 3 provided at predetermined intervals.

  As the synthetic resin foam constituting the heat insulating plates 2a and 2b, a closed cell synthetic resin foam is used. Specifically, polystyrene foam, polyethylene foam, polypropylene foam, polyurethane foam, phenol resin foam, and the like can be used. Among these, a polystyrene foam is preferable because of its low water absorption and excellent heat insulation and mechanical strength, and an extrusion foam molded product is particularly preferable. In this example, two heat insulating plates 2a, 2b are used in an overlapping manner, but three or more heat insulating plates 2a, 2b,... Moreover, although the same kind of synthetic resin foam is normally used for the material of the heat insulation board 2a, 2b, ... to overlap, it can also be set as a different kind of synthetic resin foam.

  The base material 3 is used as a receiving material when the exterior material 4 (see FIGS. 6 and 7) is attached. For example, a strip-shaped plate material such as wood or synthetic resin can be used. As shown in FIG. 3 in an enlarged manner, it is composed of a U-shaped channel material. The base material 3 is provided at predetermined intervals across one exposed surface (the surface of the heat insulating plate 2a) of the two heat insulating plates 2a and 2b that are overlapped. In addition, one exposed surface of the two heat insulating plates 2a and 2b overlapped is a surface directed to the outdoor side of the building, and is hereinafter referred to as an outer surface.

  As shown in FIG. 3A, a receiving groove 5 is formed at the installation position of the base material 3 on the outer surface. Insertion grooves 6 for inserting both leg portions of the base material 3 which is a U-shaped channel material are formed on both sides of the receiving groove 5. As shown in FIG. 3B, the base material 3 is installed in the receiving groove 5 with both legs inserted into the heat insulating plate 2 a constituting the outer surface via the insertion groove 6. If a U-shaped channel material is used as the base material 3 and both leg portions thereof are inserted into the heat insulating plate 2a constituting the outer surface, the attached state of the base material 3 is easily stabilized.

  A bolt material 7 is provided from above the base material 3 through the two heat insulating plates 2a and 2b, and protrudes to the other exposed surface (the surface of the heat insulating plate 2b) side of the two heat insulating plates 2a and 2b stacked. The nut material 8 is screwed into the front end portion of the bolt material 7 and tightened. As a result, the two heat insulating plates 2 a and 2 b and the base material 3 are integrally coupled to form the composite plate 1. The other exposed surface of the two heat insulating plates 2a and 2b stacked is a surface directed toward the indoor side of the building, and is hereinafter referred to as an inner surface.

  The two heat insulating plates 2a and 2b and the base material 3 can be joined by, for example, bonding or the like. However, when the bolt material 7 and the nut material 8 are used as described above, the heat insulating plates 2a and 2b and the base material 3 can be quickly performed on site. Even when an adhesive is used, it is preferable to use a combination of the bolt material 7 and the nut material 8 because the work can proceed without waiting for the adhesive to harden. The nut material 8 is preferably a synthetic resin cap nut shape so that the formation of the thermal bridge can be blocked. Further, it is preferable that the head of the bolt material 7 is accommodated within the depth of the receiving groove 5. If the head of the bolt member 7 is accommodated within the depth of the receiving groove 5 so as not to protrude from the outer surface, the subsequent installation of the outdoor formwork 9a (see FIGS. 4 and 5) and the exterior member 4 will be described. (See FIGS. 6 and 7), it is possible to prevent obstruction when mounting.

  In the composite plate 1 of this example, the heat insulating plate 2a is slightly smaller than the heat insulating plate 2b, and the outer peripheral surface of the heat insulating plate 2a is retracted inward from the outer peripheral surface of the heat insulating plate 2b. By doing in this way, the sealing groove | channel 10 (refer FIG.4 and FIG.5) can be formed in the outer surface side of the composite board 1 arrange | positioned mutually adjacently along a joint line.

  In the composite plate 1 of this example, the thickness of the heat insulating plate 2b constituting the inner surface is larger than the thickness of the heat insulating plate 2a constituting the outer surface, and the spline grooves 11a and 11b are formed on the side surfaces of the heat insulating plate 2b. Is formed. The spline grooves 11a and 11b are formed as thin plate-like splines 12a or 12b (see FIGS. 4 to 7) straddling each other between the opposing spline grooves 11a or 11b of the composite plate 1 installed adjacent to each other. It is for plugging in. The long-side spline groove 11a and the short-side spline groove 11b are shifted in the inner and outer surface directions so as not to interfere when the spline 12a and the spline 12b are inserted. In this example, the heat insulating plate 2b is thicker than the heat insulating plate 2a in order to facilitate the formation of the spline grooves 11a and 11b. However, depending on the thickness of the heat insulating plates 2a, 2b,. Further, since the splines 12a and 12b are installed to stop the splines, the spline grooves 11a and 11b are provided on the heat insulation plate (inside of the room) so that the splines 12a and 12b can be installed at positions close to the concrete placing area. In the example, it is preferable to form the insulating plate 2b).

  Next, the simultaneous driving method using the composite plate 1 described above will be described.

  The composite plate 1 is assembled in advance at the factory and then carried to the site or assembled at the site. When assembling the composite board 1 at the site, if the base material 3 is temporarily fixed to the heat insulating board 2a at the factory, the assembly work becomes easy. If the base material 3 is a U-shaped channel material, the insertion groove 6 is formed in the heat insulating material 2a, and the U-shaped both leg portions can be easily temporarily fixed. In addition, it is also useful to facilitate on-site assembly by forming a through hole into which the bolt member 7 is inserted in a predetermined position of the heat insulating plates 2a and 2b.

  The loaded composite plate 1 or the composite plate 1 assembled on site is started up to form a wall form as shown in FIGS. The wall formwork is provided with a formwork 9a provided on the outdoor side of the building and a formwork 9b provided on the indoor side of the building facing each other with a space therebetween, and a composite plate on the outdoor formwork 9a side. It is formed by installing 1. The mold 9a and the mold 9b are connected by a separator 13 that maintains an interval between them. The composite plate 1 is also installed using the separator 13 so that its outer surface is pressed against the mold 9a.

  Usually, the composite board 1 is installed in a vertically long state. When the composite plate 1 is installed, the spline 12a is inserted across the spline grooves 11a of the composite plate 1 installed adjacent to each other in the lateral direction so that the outflow from the seams between the long sides can be prevented. It is preferable to do. After forming the first-stage wall formwork in this way, concrete is cast in the space between the inner surface of the composite plate 1 and the formwork 9b and cured to form the concrete frame 14. Further, the composite plate 1 is integrally attached to the concrete housing 14 together with the formation of the concrete housing 14.

  The wall formwork after the second stage is usually formed for each stage after placing the concrete in the previous stage. When forming the second and subsequent wall formwork, not only the splines 12a between the composite plates 1 adjacent in the horizontal direction but also the splines 12b extending between the spline grooves 11b of the composite plates 1 adjacent in the vertical direction are inserted. In addition, it is preferable to prevent the outflow of noro from the joint between the short sides.

  After forming the concrete housing 14 to which the composite plate 1 is attached to a required height, the mold 9a and the mold 9b are removed. A seal groove 10 formed along the joint between the adjacent composite plates 1 is exposed on the outer surface side of the composite plate 1 integrally provided on the outdoor surface of the concrete housing 14. As shown in FIGS. 6 and 7, when the seal groove 15 is filled with the seal material 15, it is possible to prevent a decrease in heat insulation performance due to a seam being opened. As the sealing material 15, an in-situ foamed polyurethane foam can be used. After the sealing material 15 is filled, the exterior material 4 is attached. The exterior material 4 can be attached as a receiving material by the base material 3 attached to the outer surface of the heat insulating plate 2a. As the exterior material 4, a metal sandwich panel, siding, or the like can be used.

  As described above, the outer heat insulating wall can be constructed. In the above example, the composite plate 1 is supported by the outdoor mold 9a. However, when the composite plate 1 has the necessary rigidity, the mold 9a is omitted and the composite plate 1 is molded. It can also be used as a frame.

DESCRIPTION OF SYMBOLS 1 Composite board 2a, 2b Heat insulation board 3 Base material 4 Exterior material 5 Receiving groove 6 Insertion groove 7 Bolt material 8 Nut material 9a Outdoor formwork 9b Indoor formwork 10 Sealing groove 11a, 11b Spline groove 12a, 12b Spline 13 Separator 14 Concrete body 15 Sealing material

Claims (4)

  In the construction method of the outer heat insulating wall by the simultaneous driving method using the heat insulating plate of the synthetic resin foam, the plurality of base materials provided at predetermined intervals on one exposed surface of the plurality of stacked heat insulating plates The heat insulating plate is combined to form a composite plate, the one exposed surface of the composite plate is set to the outer surface side of the building, and concrete is placed between the other exposed surface and the formwork, and the heat insulating plate After the construction of the concrete frame integrally provided, an exterior insulation wall is attached to the base material.   While the receiving groove is formed at the position where the base material is installed on the one exposed surface, a U-shaped channel material is used as the base material, the base material which is the U-shaped channel material, It is inserted into a heat insulating plate constituting one exposed surface and provided in the receiving groove, and a bolt material is passed through the plurality of heat insulating plates from above the base material, and a nut material is screwed into a tip portion of the bolt material. The outer material according to claim 1 or 2, wherein the base material and the plurality of heat insulating plates are coupled by tightening, and the head portion of the bolt material is accommodated within the depth of the receiving groove. How to build insulation walls.   Spline grooves are formed on the side surfaces of any one of the heat insulating plates of the composite plate, and a thin plate-like spline is inserted across the opposing spline grooves of the composite plates installed adjacent to each other. The construction method of the outer heat insulation wall according to claim 1 or 2.   By using a smaller heat insulating plate constituting the one exposed surface than the other heat insulating plate, the outer peripheral surface of the heat insulating plate constituting the one exposed surface is retracted inside the outer peripheral surface of the other heat insulating plate. A seal groove is formed along the joint on the one exposed surface side of the composite plate arranged adjacent to each other, and the seal groove is filled with the seal material before the exterior material is attached. The construction method of the outer heat insulation wall as described in any one of Claims 1-3.

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