JP4635165B2 - Construction method of outer wall structure of reinforced concrete building - Google Patents

Description

  The present invention relates to a construction method for a reinforced concrete building outer wall structure, and more particularly to a formwork construction of a concrete outer wall of a house.

The outer heat insulating method is a heat insulating method in which a heat insulating material is arranged outside the concrete frame. In Europe and the United States, it was used mainly in Germany and Northern Europe as a standard insulation method for concrete buildings. In Japan, the inner insulation method has been used as a standard, but in recent years, attention has been focused on the outer insulation method (http://www.glass-fiber.net/naidannetu/3.html).
(P1) In the case of the concrete heat insulation method, the concrete is struck between molds made of plywood, the molds are removed, and then a heat insulating material is stretched.
(P2) On the other hand, as shown in Patent Documents 1 and 2, as the invention of the heat-insulating material for the formwork, one in which the heat-insulating formwork panel is constructed on both the outdoor side and the indoor side is proposed. Yes.
JP 2005-344501 A JP 2004-36333 A

However, the conventional concrete heat insulation methods P1 and P2 have the following inconveniences (1) to (2), which are not sufficient.
(1) In the conventional concrete heat insulation method (P1), the formwork panel used for the formwork is limited to use at two or three sites thereafter, and is substantially difficult to reuse. Met. Moreover, since the number of processes is large, the cost is high.
(2) The concrete heat insulation method (P2) is very expensive, and since there is no step of removing the formwork, there is a disadvantage that even if a problem such as a jumper occurs in placing concrete, it cannot be visually recognized. In Patent Document 1, the construction of the base material for the support work is complicated, and the reuse is difficult. In Patent Document 2, since the heat insulating material requires a structural force as a mold, the heat insulating material and the exterior material are integrated, which is expensive and reduces the degree of design freedom.

  This invention is made in view of the above-mentioned subject, and this invention arranges a heat insulation panel, a heat insulation panel presser, and a support material toward the outdoor side, and at the time of concrete frame formation, a heat insulation panel presser and The invention is such that the support material does not come into contact with concrete. That is, the present invention provides a heat insulating panel supporter for supporting a heat insulating panel by a separator on the outdoor side of a reinforcing bar in which a formwork panel is disposed on the indoor side, and a support work by providing a gap on the outdoor side of the heat insulating panel. A support for constructing a material, a presser material inserter for filling the gap with a heat insulation panel presser and inserting it, a concrete framer for forming a concrete frame by pouring concrete into the rebar, and the supporter material, A construction method for an outer wall structure of a reinforced concrete building comprising the heat insulation panel pressing member and a removal work for removing the formwork panel from the concrete frame.

  In the heat insulating panel supporter, the material of the heat insulating material is not particularly limited, but an extruded polystyrene foam or the like can be adopted.

  As a support material of a support work, the structure fixed with a fastener vertically and horizontally with a vertical pipe and a horizontal pipe is mentioned.

  In the presser material insertion work, the presser material is embedded into the gap from above and stored between the support material and the heat insulation panel. The material for the presser is not particularly limited, and examples thereof include a vertical member, a vertical panel, and the like, which may be used in combination. Examples of the vertical member include a square member. Examples of the vertical panel include a panel formed by combining a veneer plywood with a square bar. When the heat insulating panel is an extruded polystyrene foam or the like, stress may concentrate on the corner portion and breakage. Therefore, it is preferable to use a plurality of square members to form an L shape and firmly press the corner portion. Vertical corner bars may be used at the corners of the outer wall of the building and the position where the pitch changes, and vertical panels may be used otherwise. One presser member may be inserted or a plurality of presser members may be inserted simultaneously.

(1) The presser material and the support material according to the present invention can be reused at the site any number of times after being removed after the concrete frame is formed, and there is no waste. In addition, the present invention does not require high technology, has a small number of processes, and can be installed easily and rationally with a small number of people, thereby reducing the construction cost.
(2) The heat insulating material according to the present invention is used also as a mold and is easy to support.
(3) Since the heat insulating material of the present invention does not require a structural force as a mold, an inexpensive heat insulating material can be employed.
(4) Since the said formwork panel is removed by the removal work of this invention, it can visually recognize even if malfunctions, such as a jumper, have occurred.
(5) The support material of the present invention is not in contact with concrete, and can be removed immediately by dismantling the support material, and continuous construction is also possible.
(6) Since the presser material of the present invention is sufficient for the length of one layer of the building, construction is possible if there are at least one or two persons.

  The construction method of the reinforced concrete building outer wall structure of Embodiment 1 in which the construction method of the reinforced concrete building outer wall structure of the present invention is applied to residential construction will be described with reference to FIGS.

(A) Insulation panel supporter As shown in FIG. 1 (a), reinforcing bars (not shown) are arranged in the reinforcing bar space 2 on the outdoor side of the formwork panel 1, and the separator 3 is attached orthogonally to the formwork panel 1, As shown in FIG. 1 (b), a heat insulating panel 4 is attached to the outdoor side of a reinforcing bar (not shown) by a separator 3 with a reinforcing bar space 2 in parallel with the formwork panel 1. The formwork panel 1 may be a concrete panel or a plywood panel (eg veneer). The separator 3 is a linear fastener, and includes an iron bar 3 a orthogonal to the main surface of the formwork panel 1, pressers 3 b and 3 c for holding the formwork panel 1, and a presser for holding the indoor side surface of the heat insulation panel 4. 3d and a heat insulation panel stopper 3e that penetrates the heat insulation panel 4 and is coaxially screwed into the presser 3d. The heat insulation panel 4 is exemplified by a panel having a thickness of 50 mm made of a resin foam such as an extruded polystyrene foam.
(B) Supporting work As shown in FIG.1 (c), it uses the supporting material comprised from the vertical steel pipe 5, the horizontal steel pipe 6, and the fastener 7 (refer FIG. 3) to the outdoor side of the heat insulation panel 4, and is supported. Then, a gap 8 is formed between the heat insulating panel 4 and the horizontal steel pipe 6. At that time, some splints (not shown) are inserted between the heat insulation panel 4 and the horizontal steel pipe 6 to ensure the thickness of the gap 8.
(C) Presser material insertion process As shown in FIGS. 2, 3, and 4A, the heat insulation panel presser square 9 is inserted into the gap 8 from above in the vertical direction. In FIG. 2, the horizontal steel pipe 6 is indicated by a dotted line, and the vertical steel pipe 5 and the fastener 7 are not shown for easy understanding of the state of insertion.
As the heat insulation panel retainer square 9, square wood having a length of one layer (for example, about 3 meters) or more and a cross-sectional area of, for example, 25 mm × 50 mm is adopted. The gap 8 is slightly thicker than the fitting dimension so that the insulating panel presser square 9 can be easily inserted. After the insertion operation is completed, the vertical steel pipe 5, the horizontal steel pipe 6, and the fastener 7 are finally provided. Adjust and tighten. The vertical steel pipe 5 is positioned in the middle part of the heat insulating panel retainer square 9 so as to prevent the heat insulating panel retainer square 9 from shifting in the direction parallel to the heat insulating panel 4, and the horizontal steel pipe 6 is directed from the outdoor side to the indoor side. The outdoor side surface of the heat insulation panel retainer square 9 is held from the lateral direction.
In addition, if the heat insulation panel retainer square 9 is constructed in one place, it is preferable to install supporters in other places in the same manner and repeatedly perform the work of inserting the retainer.
(D) Frame forming work The concrete frame 10 (refer FIG.4 (b)) is formed by pouring concrete into the reinforcing bar space 2. FIG.
(E) Removal work The formwork panel 1, the separator 3, the vertical steel pipe 5, the horizontal steel pipe 6, and the heat insulation panel holding square 9 are removed from the concrete frame 10, and it is set as the construction completion state shown in FIG.4 (b). However, the part of the concrete housing 10 among the separators 3 is left and the other components are removed.
(F) Others Construction of a one-story house ends with construction for one layer. In the case of construction of a two-story house, the construction similar to the construction of the first floor is also performed on the second floor.

According to Embodiment 1 demonstrated above, there exists the following effect.
(1) Since the formwork panel 1, the separator 3, the vertical steel pipe 5, the horizontal steel pipe 6, and the heat insulation panel retainer square 9 are removed after the concrete frame is formed, the separator 3, the vertical steel pipe 5, the horizontal steel pipe 6, and the heat insulation panel retainer are removed. The square bar 9 can be reused at the site any number of times, is efficient, and is advantageous for environmental protection and the like. The first embodiment does not require high technology, has a small number of processes, and can be installed easily and rationally with a small number of people, thereby reducing the construction cost.
(2) The heat insulation panel 4 is used also as a mold, and the support work of the vertical steel pipe 5 and the horizontal steel pipe 6 is simple.
(3) Since the heat insulation panel 4 does not require the structural force as a formwork, an inexpensive heat insulating material can be employed.
(4) Since the formwork panel 1 is removed by the removal work, it can be visually recognized even if a malfunction such as a jumper occurs.
(5) The vertical steel pipe 5, the horizontal steel pipe 6, the support material of the fastener 7 and the gap 8 are not in contact with the concrete, and the support material and the insulating panel presser square 9 are disassembled and removed immediately. It is possible, and continuous construction is also possible.

Next, the construction method of the reinforced concrete building outer wall structure according to Embodiment 2 of the present invention will be described with reference to FIGS. The second embodiment is a modification of (C) presser material insertion work of the first embodiment, and the other steps are the same, and thus a common description is omitted.
(C) Presser material insertion process As shown in FIGS. 5 to 7, the corner portion is packed with the heat insulating panel presser square member 9 as in the first embodiment, and the flat portion has, for example, a width of 250 mm (at both ends of the plywood). A heat insulating panel pressing panel 9 'which is a vertical frame panel (for example, a wood panel made of veneer plywood and wood) (see FIG. 5 and FIG. 6) is packed. When the heat insulation panel 4 is a resin foam such as an extruded polystyrene foam and is weak in strength, the heat insulation panel 4 is easily broken, and therefore, the corners are packed with a heat insulation panel presser square 9 in an L shape (see FIG. 7). The number of the square members 9 is not limited to the figure, and can be selected as appropriate. In consideration of cost, the heat insulating panel press panel 9 'is optimally made of wood, and is light in weight and easy to work.
By adopting the heat insulating panel pressing panel 9 ', the time for packing can be shortened compared with the first embodiment, and the work process is simplified.

  The embodiment of the present invention is not limited to the above-described embodiment, and it goes without saying that various forms can be adopted as long as it belongs to the technical scope of the present invention. For example, as a matter of course, a combination of some elements of the embodiment can be changed, some elements can be exchanged, and some elements can be deleted. Other elements may be combined with the first embodiment or the second embodiment.

(A) is the plane cross section which shows the state after construction of the reinforcing bar which forms a reinforcing bar and a formwork panel performed as a pre-stage of the heat insulation panel supporter in the construction method of the reinforced concrete building outer wall structure of Embodiment 1 of the present invention FIG. 4B is a plan cross-sectional view showing a state after the construction of the heat insulating panel support, and FIG. It is a perspective view which shows the mode of the pressing material insertion process. It is a front view which shows the state after construction of the presser material insertion work. (A) is a plane sectional view showing the state after construction of the presser material insertion work, (b) is a plan sectional view showing the state after the removal work (rebar is not shown). It is a plane sectional view showing the state after pressing material insertion work in the construction method of the reinforced concrete building outer wall structure of Embodiment 2 of the present invention. It is a front view which shows the state of a plane part after the pressing material insertion process. It is a plane sectional view showing the state of a corner after the presser material insertion work.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Formwork panel 2 ... Reinforcing bar space 3 ... Separator 3a ... Bar-shaped metal fitting 3b ... Presser 3c ... Presser 3d ... Presser 3e ... Heat insulation panel stopper 4 ... Heat insulation panel 5 ... Vertical steel pipe 6 ... Horizontal steel pipe 7 ... Fastener 8 ... Air gap 9 ... Insulating panel presser square 10 ... Concrete frame 9 '... Insulating panel presser panel

Claims (1)

A heat insulation panel supporter that supports the heat insulation panel by a separator on the outdoor side of the reinforcing bar in which the formwork panel is arranged on the indoor side,
A support for constructing a support material by providing a gap on the outdoor side of the heat insulation panel;
A presser material inserter for inserting and inserting a heat insulating panel presser into the gap;
A concrete body forming work for forming a concrete body by pouring concrete into the reinforcing bar,
A removal work for removing the support material, the heat insulation panel pressing material, and the formwork panel from the concrete frame;
A construction method for an outer wall structure of a reinforced concrete building characterized by comprising:

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