JP2007016471A - Heat-insulating concrete wall and construction method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat-insulating concrete wall excellent in heat insulating properties. <P>SOLUTION: This heat-insulating concrete wall comprises: a pair of heat-insulating composite panels 2 and 2 which are arranged in the state of facing each other at a predetermined interval; an interval maintaining means 10 for maintaining the predetermined interval between the panels 2 and 2; and concrete 7 which is placed between both the panels 2 and 2. A flexible heat insulating material 5 is provided on the inside of each of the panels 2, and a rigid panel 3 is provided on the outside thereof. The means 10 comprises a connecting rod 11 which is provided between both the panels 2 and 2, and an attachment 15 and a fastening nut 20 for fixing the panel 3 of each of the panels 2 to an end of the connecting rod 11. Since a heat insulating layer is provided on the side of an inner surface of the wall and both the sides of the wall, the heat insulating properties can be improved. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a heat insulating concrete wall and a method for constructing a heat insulating concrete wall, and more particularly to a heat insulating concrete wall effective as an outer wall of a concrete structure and a method for constructing a heat insulating concrete wall.

  As an example of a heat insulating concrete wall, a heat insulating concrete wall is known in which various heat insulating materials are post-applied to an inner surface side (indoor side) of a wall formed to have a predetermined thickness by placing concrete.

  A heat insulating concrete wall having such a structure has a plywood plate disposed on the inner and outer surfaces of the wall portion, and one end of the spacer is attached to the plywood plate via an attachment, and one end of the spacer is passed through the plywood plate outwardly. Then, a mold retainer is attached to one end of the spacer via a reinforcing member.

  Then, concrete is placed in the space formed between the plywood and the heat insulating material, and after the concrete is solidified, the formwork holder, the plywood are removed, and then the heat insulating composite panel is pasted with an adhesive or the like. Thus, a heat insulating concrete wall can be constructed.

  By the way, in the heat insulating concrete wall having the above-described structure, since the heat insulating material is provided only on the inner surface side, sufficient heat insulating properties cannot be obtained, and a gap is provided between the concrete frame and the heat insulating material. It is formed and dew condensation occurs in the gap. Moreover, it takes much time to attach and remove the plywood and the mold retainer, and the work efficiency is very poor. In addition, there is a method that has been devised to cast the heat insulating material as a mold and integrate it with the concrete frame, but since the heat insulating material is soft, the spacing between the heat insulating materials cannot be kept constant, and the thickness is uniform. It was difficult to build a wall.

  The present invention has been made in view of the above-described conventional problems, and can improve work efficiency, improve accuracy, suppress the occurrence of condensation, and provide heat insulation. It aims at providing the construction method of the heat insulation concrete wall which can improve property, and a heat insulation concrete wall.

The present invention employs the following means in order to solve the above problems.
That is, the invention according to claim 1 includes a pair of heat-insulating composite panels opposed to each other with a predetermined interval, a gap holding means for holding the space between both heat-insulating composite panels at a predetermined interval, and between the heat-insulating composite panels. Each of the heat insulating composite panels is provided with a soft heat insulating material on one surface of a hard panel, the heat insulating materials are arranged so as to face each other, and the interval holding means is A connecting rod spanned between the two heat insulating composite panels, and fastening means for fixing the panels of the heat insulating composite panels to end portions of the connecting rods.

  According to the heat insulating concrete wall according to the present invention, since the heat insulating composite panel is provided in close contact with both the inner surface side and the outer surface side of the wall, a heat insulating layer is formed on both the inner surface side and the outer surface side of the wall. Can do. Therefore, it is possible to further improve the heat insulating property as compared with the case where the heat insulating layer is formed on the inner surface side, and to suppress the occurrence of condensation. Moreover, since the both ends of the connecting rod of the interval holding means are fixed to the panels of each heat insulating composite panel via the fastening means, the interval between the heat insulating composite panels can be kept constant. Therefore, there is no change in the distance between the two heat insulating composite panels due to the concrete placement, and a highly accurate heat insulating concrete wall can be obtained, which can be used as a foundation for finishing as it is.

  The invention according to claim 2 is the heat insulating concrete wall according to claim 1, wherein the fastening means is attached to both end portions of the connecting rod, and the tip portion penetrates the heat insulating material of the heat insulating composite panel. And an attachment made of a heat-insulating material that contacts the panel, and a fastening nut that penetrates the panel from the outside of the panel and is screwed to the connecting rod.

  According to the heat insulating concrete wall according to the present invention, when attaching the gap holding means between both heat insulating composite panels, the heat insulating material of each heat insulating composite panel is passed through the attachment made of a material having heat insulating properties, By fastening and tightening a fastening nut to the connecting rod from the outside of the panel, the panel of each heat insulating composite panel can be fixed without the connecting rod becoming a thermal bridge. Therefore, by attaching the interval holding means, the heat insulating properties of both heat insulating composite panels are not greatly impaired, the interval does not become inaccurate, and it does not change even by placing concrete, A heat insulating concrete wall having a predetermined thickness and high accuracy can be obtained.

  In the invention according to claim 3, the pair of heat insulating composite panels are arranged to face each other with a predetermined interval, and a space holding means is attached between the both heat insulating composite panels so as to hold the two heat insulating composite panels at a predetermined interval. A concrete placement step in which concrete is placed on the inner portions of the pair of heat insulating composite panels installed in the form placement step, and a part of the constituent members of the interval holding means is buried in the concrete. It is characterized by having.

  According to the method for constructing a heat insulating concrete wall according to the present invention, the pair of heat insulating composite panels are arranged at a predetermined interval in the mold installation step, and the interval between them is held by the interval holding means. Then, in the concrete placing step, by placing concrete on the inner portions of the pair of heat insulating composite panels, it is possible to construct a heat insulating concrete wall in which the heat insulating composite panels are arranged on the inner surface side and the outer surface side.

  As described above, according to the heat insulating concrete wall according to claim 1 of the present invention, since the heat insulating composite panel is provided in close contact with both the inner surface side and the outer surface side, the inner surface side and the outer surface side. It is possible to form a heat insulating layer without an air layer in which dew condensation occurs on both. Therefore, compared with what forms the heat insulation layer in the inner surface side, heat insulation, comfort, and durability can be improved significantly. In addition, since both ends of the gap holding means are fixed to the rigid panel by the fastening means, the distance between the two heat insulating composite panels will not change even if concrete is placed between the two heat insulating composite panels. The distance between the two heat insulating composite panels can be kept constant. Therefore, a highly accurate heat insulating concrete wall having a uniform thickness over the whole can be obtained.

Moreover, according to the heat insulation concrete wall of Claim 2 of this invention, when attaching a space | interval holding | maintenance means between both heat insulation composite panels, let an attachment penetrate the heat insulating material of each heat insulation composite panel, and contact a panel. The panel of each heat insulating composite panel can be fixed to the end portion of the connecting rod by tightening the fastening nut through the panel from the outside of the panel and screwing it into the connecting rod.
Therefore, since the interval between the two heat insulating composite panels is not changed by attaching the interval holding means, and is not changed by the placement of the concrete, high precision and high thickness of a predetermined thickness. A heat insulating concrete wall with high performance will be obtained. Furthermore, since it is only necessary to screw and tighten the fastening nut to the end of the connecting rod from the outside of the panel, the working efficiency can be greatly improved.

  Furthermore, according to the method for constructing a heat insulating concrete wall according to claim 3 of the present invention, a pair of heat insulating composite panels can be used as a mold frame. Therefore, a veneer plate is used as a mold frame, or a mold that presses the veneer plate Since it is not necessary to use a frame presser or the like, the work efficiency can be greatly increased, and it can contribute to resource saving, environmental conservation, improvement of the construction environment, and the like.

Hereinafter, embodiments of the present invention shown in the drawings will be described.
1 and 2 show an embodiment of a heat insulating concrete wall according to the present invention. The heat insulating concrete wall 1 has a pair of heat insulating composite panels 2 and 2 arranged to face each other at a predetermined interval. And the space | interval holding | maintenance means 10 which maintains both the heat insulation composite panels 2 and 2 to predetermined spacing, and the concrete 7 cast | placed between the both heat insulation composite panels 2 and 2 are provided.

  Each heat insulating composite panel 2 includes a plate-like panel 3 formed of a hard material and a heat insulating material 5 formed of a soft material joined to one surface of the panel 3. A predetermined number of sheets are provided on the inner surface side and the outer surface side of the heat insulating concrete wall 1 so as to face each other.

  The panel 3 of each heat insulating composite panel 2 is provided with a plurality of through holes 4 penetrating between the front and back surfaces, and a portion of the heat insulating material 5 corresponding to each through hole 4 is provided between the front and back surfaces of the heat insulating material 5. Each of the insertion holes 6 has a diameter larger than that of the through hole 4 penetrating through the screw hole 21. A screw portion 21 of a fastening nut 20 described later is inserted into the through hole 4, and a main body portion 16 of the attachment 15 described later is inserted into the insertion hole 6. Is inserted.

  As shown in FIGS. 1 and 3 to 6, the interval holding means 10 includes a round rod-like connecting rod 11 in which male screw portions 12 and 12 are screwed at both ends, and attachments attached to both ends of the connecting rod 11. 15, and fastening nuts 20, 20 that are screwed to the outer portions of the attachments 15, 15 at both ends of the connecting rod 11, and the attachment means and the fastening nut 20 constitute fastening means. The connecting rod 11 and the attachments 15 and 15 of the space holding means 10 are embedded in the heat insulating concrete wall 1, and the fastening nut 20 is removed from the connecting rod 11 after the heat insulating concrete wall 1 is constructed. As shown, a heat-insulating cap 25 or putty is inserted.

  The connecting rod 11 is formed into one by connecting two split rods 13 and 13 via a long nut 14 in order to adjust the length. Each split rod 13 is provided with male screw portions 12 and 12 at both ends, and the male screw portion 12 at one end of each split rod 13 is screwed from both ends in the longitudinal direction of the long nut 14. The 13 end surfaces are brought into contact with each other inside the long nut 14. And both the split rods 13 and 13 are integrally connected by joining between the split rods 13 and 13 and the long nut 14 integrally by welding. The connecting rod 11 may be formed as a whole without connecting the two split rods 13 and 13.

  The attachment 15 is formed from a heat-insulating resin or the like, and is provided integrally with a cylindrical main body 16 and one end in the longitudinal direction of the main body 16. And a flange portion 17 that has a water-stopping function, and a root portion of the flange portion 17 is chamfered in a substantially semicircular cross section over the entire circumference.

  An inner portion of the main body portion 16 of the attachment 15 is formed in a large diameter portion 18 having a larger diameter than an inner portion of the flange portion 17, and the male screw portion 12 of the connecting rod 11 is formed on the inner peripheral surface in the large diameter portion 18. And are located at a predetermined interval. An inner portion of the flange portion 17 is formed in a small diameter portion 19 having a smaller diameter than the large diameter portion 18 of the main body portion 16, and the root portion of the male screw portion 12 of the connecting rod 11 is positioned in the small diameter portion 19. Thus, the attachment 15 is fixed to the connecting rod 11 by caulking the root portion of the flange portion 17 inward. In this case, the positional relationship between the connecting rod 11 and the main body portion 16 of the attachment 15 is set so that the front end of the connecting rod 11 is positioned inward of the front end of the main body portion 16 of the attachment 15.

Next, the construction method of the heat insulation concrete wall of the above structure is demonstrated.
That is, the method for constructing a heat insulating concrete wall includes a mold installation process and a concrete placing process in which concrete is placed in a portion inside the mold installed in the mold installation process.

  In the mold installation step, the heat insulating composite panels 2 as the molds are respectively arranged in the portions corresponding to the inner surface side and the outer surface side of the heat insulating concrete wall 1, and the space holding means 10 is attached between the two heat insulating composite panels 2, 2. The space holding means 10 holds the heat insulating composite panels 2 and 2 at a predetermined space.

  Specifically, as shown in FIG. 1, the main body portion 16 of one attachment 15 of the interval holding means 10 is attached to one of the heat insulating composite panels 2 (the heat insulating composite panel 2 on the inner surface side or the outer surface side of the heat insulating concrete wall 1). It inserts in the insertion hole 6, the flange part 17 is contact | abutted on the surface of the heat insulating material 5, the screw part 21 of the fastening nut 20 is inserted in the through-hole 4 from the outer side of the panel 3, and the screw part 21 of the fastening nut 20 is inserted. Are screwed into the male threaded portion 12 of the connecting rod 11 and tightened to bring the head 22 of the fastening nut 20 into contact with the surface of the panel 3. Thereby, the one end part of the connecting rod 11 is fixed to the panel 3 of one heat insulation composite panel 2 via the attachment 15 and the fastening nut 20. In this case, a formwork reinforcing member 26 is interposed between the head 22 of the fastening nut 20 and the panel 3 as necessary.

  Further, the main body portion 16 of the other attachment 15 is inserted into the insertion hole 6 of the other heat insulating composite panel 2 (the heat insulating composite panel 2 on the outer surface side or the inner surface side of the heat insulating concrete wall 1), and the flange portion 1 is inserted into the heat insulating material 5. The screw portion 21 of the fastening nut 20 is inserted into the through hole 4 from the outside of the panel 3, and the screw portion 21 of the fastening nut 20 is screwed into the male screw portion 12 of the connecting rod 11 and tightened. The head 22 of the fastening nut 20 is brought into contact with the surface of the panel 3. As a result, the other end of the connecting rod 11 is fixed to the panel 3 of the other heat insulating composite panel 2 via the attachment 15 and the fastening nut 20.

  In this way, in the mold installation step, the heat insulating composite panels 2 and 2 are respectively installed in the portions corresponding to the inner surface side and the outer surface side of the heat insulating concrete wall 1, and the space holding means 10 is provided between the two heat insulating composite panels 2 and 2. Is held at a predetermined interval. In addition, in a mold installation process, you may make it reinforce each heat insulation composite panel 2 by installing a support plate through the reinforcement member as needed outside each heat insulation composite panel 2.

  Next, in the concrete placing step, the concrete 7 is placed between the pair of heat insulating composite panels 2 and 2 installed in the mold placing step, and the concrete 7 is solidified after a predetermined curing period. A heat insulating concrete wall 1 in which the heat insulating composite panels 2 and 2 are arranged on the inner surface side and the outer surface side is constructed.

  Then, as shown in FIG. 2, unnecessary members (fastening nuts 20 and the like) other than the connecting rod 11 and attachment 15 and the like of the interval holding means 10 embedded in the concrete 7 are removed and removed. A cap 25 made of a heat-insulating resin or the like is inserted into the through-hole 4 of the panel 3 and is fitted on the male screw portion 12 of the connecting rod 11. Alternatively, the putty is filled in the through hole 3 of the panel 3 and around the connecting rod 11. In this way, the heat insulating concrete wall 1 in which the heat insulating composite panels 2 and 2 are arranged on the inner surface side and the outer surface side can be constructed.

  In the construction method of the heat insulating concrete wall and the heat insulating concrete wall according to the present embodiment configured as described above, the heat insulating composite panel 2 having the heat insulating material 5 is disposed on the inner surface side and the outer surface side, respectively. A heat insulating layer can be provided in close contact with both the inner surface side and the outer surface side of the outer wall. Therefore, it is possible to further improve the heat insulating property as compared with the conventional one provided only on the inner surface side of the outer wall, and to prevent dew condensation between the outer wall and the heat insulating layer.

  Furthermore, between the heat insulation composite panels 2 and 2 arrange | positioned at the inner surface side and outer surface side of a wall is hold | maintained by the space | interval holding means 10 at a predetermined space | interval, In this case, the space | interval holding means 10 is fixed to the hard panel 3 of the heat insulation composite panel 2. Since the end portion of the heat insulating composite panel 2 is fixed, the insulation between the heat insulating composite panels 2 and 2 is not affected by the presence of the soft heat insulating material 5, and the heat insulating concrete wall 1 is highly accurate. Can be built. Furthermore, since the connecting rod 11 with low heat insulating property is not in contact with the panel 3, it is possible to prevent the connecting rod 11 from becoming a thermal bridge.

  Furthermore, when attaching the space | interval holding | maintenance means 10 between both the heat insulation composite panels 2 and 2, the attachment 15 is inserted in the insertion hole 6 of the heat insulating material 5, and the thread part of the fastening nut 20 is inserted into the through-hole 4 from the outer side of the panel 3. 21 is inserted, screwed into the male threaded portion 12 of the connecting rod 11 and tightened, and the head 22 is simply brought into contact with the surface side of the panel 3. The interval holding means 10 can be attached to the. Therefore, the working efficiency can be greatly increased.

It is the partial expanded sectional view which showed one Embodiment of the heat insulation concrete wall by this invention, Comprising: It is the partial expanded sectional view which showed the state under construction. It is the elements on larger scale which showed the state after construction of the heat insulation concrete wall of FIG. It is explanatory drawing which showed the whole space | interval holding | maintenance means. It is explanatory drawing which showed the relationship between one division | segmentation rod of FIG. 3, and an attachment. It is explanatory drawing which showed the relationship between the other division | segmentation rod of FIG. 3, and an attachment. It is sectional drawing of an attachment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat insulation concrete wall 2 Heat insulation composite panel 3 Panel 4 Through-hole 5 Heat insulating material 6 Insertion hole 7 Concrete 10 Space | interval holding means 11 Connecting rod 12 Male thread part 13 Split rod 14 Long nut 15 Attachment 16 Main part 17 Flange part 18 Large diameter part 19 Small diameter portion 20 Fastening nut 21 Screw portion 22 Head portion 25 Cap 26 Formwork reinforcement member

Claims (3)

A pair of heat-insulating composite panels disposed opposite to each other with a predetermined interval; interval holding means for holding the two heat-insulating composite panels at a predetermined interval; and concrete placed between the both heat-insulating composite panels,
Each of the heat insulating composite panels is provided with a soft heat insulating material on one surface of a hard panel, and the heat insulating materials are arranged so as to face each other, and the interval holding means is hung between the heat insulating composite panels. A heat insulating concrete wall comprising: a connecting rod to be passed; and fastening means for fixing the panels of the heat insulating composite panels to end portions of the connecting rod.   The fastening means is attached to both ends of the connecting rod, and has an attachment made of a heat-insulating material with a tip portion penetrating the heat insulating material of the heat insulating composite panel and coming into contact with the panel, and from the outside of the panel 2. The heat insulating concrete wall according to claim 1, comprising a fastening nut that passes through the panel and is screwed to the connecting rod. A mold installation step for arranging a pair of heat insulating composite panels opposite to each other at a predetermined interval and attaching a gap holding means between the two heat insulating composite panels so as to hold the two heat insulating composite panels at a predetermined interval; A concrete placing step of placing concrete in a portion inside the pair of heat-insulating composite panels installed in the installation step, and embedding a part of the constituent members of the interval holding means in the concrete. How to build insulated concrete walls.

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