JP4806743B2 - Construction structure of external heat insulating material for buildings - Google Patents

Description

  The present invention relates to an external heat insulating material construction structure for a building.

  Conventionally, a foundation structure of a building has a groove of a predetermined depth excavated along an area where the foundation of the building is placed on the foundation ground, and an inner ground surface surrounded by the groove is also provided. Excavated to a predetermined depth (shallow than the groove) from the ground level, crushed stones and / or chestnuts are rolled on the groove and the ground inside, and vertically arranged above the groove and at other positions on the upper surface. And slab reinforcement is assembled, temporary frames are arranged along the vicinity of both side surfaces of the vertical reinforcement assembled at the groove position, and concrete is struck so as to embed these vertical reinforcements. It is said that the concrete was struck so as to embed the slab reinforcement.

  In such a basic structure of a conventional building, it takes a lot of time and effort to install a temporary frame that is arranged for hitting concrete. In order to solve this problem, the present applicant reduced the labor and time required to install temporary frames for placing concrete, and reduced the man-hours and costs of the building. The basic structure used and its construction method were proposed previously (see Patent Document 1).

There is a demand for reducing the number of man-hours for construction of the outer heat insulating material in the basic structure of a building as described in Patent Document 1 above. Conventionally, the outer insulation material is constructed by removing the temporary frame that is placed to hit the concrete, then placing the insulation material on the outer peripheral surface of the concrete, and finishing this insulation material to prevent the invasion of white ants. Work to cover with materials (external finishing, the same applies below) was necessary. For this reason, it takes time and labor to construct the outer heat insulating material, resulting in a longer construction period and higher costs.
JP 2003-96791 A

  The present invention has been made to solve the above-described problems, and provides an external heat insulating material construction structure for a building that can be easily applied to an external heat insulating material, has a short construction period, and can reduce costs. The purpose is to do.

In order to achieve the above object, according to the first aspect of the present invention, an improved ground having a predetermined depth is generated for at least a portion of a substantially floor shape of a building relative to a foundation ground, and an outer wall and an inner wall are formed on the improved ground. A plurality of concrete foundation blocks having a predetermined U-shaped cross section having a bottom wall and a predetermined length are connected and assembled in the length direction, and heat insulation such as urethane is applied to the inner surface of the outer wall of the connected concrete foundation block. The concrete foundation block is filled with concrete, the foundation of the building is placed on the concrete, and the outer heat insulating material disposed on the outer wall of the building is placed on the inner surface of the outer wall of the concrete foundation block. It is provided in a state continuous with the disposed heat insulating material.

  In the external heat insulating material construction structure for a building according to the present invention, the external heat insulating material disposed on the outer wall of the building is provided in a state substantially continuous with the heat insulating material disposed on the inner surface of the outer wall of the concrete foundation block. Therefore, an external finish for preventing the invasion of white ants is not required for the heat insulating material, the external heat insulating material can be easily constructed, and the construction period can be shortened and the cost can be reduced.

  Hereinafter, the external heat insulating material construction structure of a building according to the first embodiment of the present invention will be described. FIG. 1 shows a cross section of an inverted solid foundation structure completed by applying an outer heat insulating material construction structure according to the present invention. The installer excavates the foundation ground 1 almost entirely at a predetermined depth (about 620 mm in this example) from the ground level GL in accordance with the vicinity of the outer periphery of the floor shape of the building. In this excavated area, a cement-based ground improvement material (cement solidifying material) is added to the excavated earth and sand, backfilled and rolled to form the improved ground 2a. The ground improvement material may be another soil stabilization material. A plurality of concrete foundation blocks 3 having a predetermined length (for example, 1500 mm) are connected and assembled to the upper surface of the improved ground 2a in a length direction.

  This concrete foundation block 3 includes an L-shaped concrete foundation block 3a (L-shaped member) composed of an outer wall 31 having a tall height (for example, 650 mm) and a bottom wall 32, and an inner side having a low height (for example, 450 mm). It has an I-shaped concrete foundation block 3b (I-shaped member) composed of a wall 33, and grooves 34, 35 having a predetermined depth (for example, 25 mm) are formed on the upper surface of the bottom wall of the concrete foundation block 3a. Here, the lower end portion of the I-shaped concrete foundation block 3 b is fitted in the groove 35. In addition, the lower end part of the I-shaped concrete foundation block I may be fitted into the groove 34 and can be fitted at an arbitrary position during construction.

  Next, the improved ground 2b is generated in the same manner as described above up to the height of the inner wall 33 on the ground surrounded by the connected concrete foundation block 3 and on the inner surface of the improved ground 2a. The improved ground 2b has a thickness of about 620 mm and a height of about 400 mm from the ground level GL. The upper end of the outer wall 31 of the concrete foundation block 3 is set to a height of about 400 mm from the ground level GL. Further, on the inner surface of the outer wall 31 and the improved ground 2b, heat insulating materials 5 and 6 made of, for example, urethane or foam material are disposed.

  The reinforced concrete slab 4 is hit to the height of the outer wall 31 on the improved ground 2b and the heat insulating material 6 inside the concrete foundation block 3 connected as described above. The horizontal upper surface of the reinforced concrete slab 4 is set at a predetermined required height (about 400 mm) from the ground level GL.

  The foundation structure thus constructed has a deck structure, and a building (building) can be placed on the reinforced concrete slab 4. FIG. 1 shows a state in which a building base 11 is placed on a reinforced concrete slab 4 and fixed with an anchor (not shown), and columns and outer walls 12 are erected on the base 11. For the connection of the concrete foundation block 3, a connection fitting (not shown) is used. An outer heat insulating material 51 is disposed on the outer surface of the outer wall 12 of the building, and the outer heat insulating material 51 is continuous with the heat insulating material 5 disposed on the inner surface of the outer wall 31 of the concrete foundation block 3. Is.

  In the said embodiment, since the outer heat insulating material 51 arrange | positioned at the outer wall 12 of a building is provided in the state continuous with the heat insulating material 5 arrange | positioned at the inner surface of the outer side wall 31 of the concrete foundation block 3, it heat-insulates. An external finish for preventing white ants from entering the material 5 is not required, and the external heat insulating material 51 can be easily constructed. Therefore, the construction period can be shortened and the cost can be reduced. Moreover, since a concrete foundation block can be divided | segmented into an L-shaped member and an I-shaped member, an outer side wall and an inner side wall can be changed into arbitrary width dimensions.

  Next, the external heat insulating material construction structure for a building according to the second embodiment of the present invention will be described. FIG. 2 shows a cross section of a solid foundation structure completed by applying the external heat insulating material construction structure for a building according to the present invention. As shown in FIG. 1, the builder forms an improved ground 2a in the vicinity of the outer periphery of the floor shape of the building with respect to the foundation ground 1, and a predetermined length is formed on the upper surface of the improved ground 2a with a non-frame. A plurality of concrete foundation blocks 3 are connected and assembled in the length direction.

  Although this concrete foundation block 3 is comprised from the member similar to 1st Embodiment, the I-shaped concrete foundation block 3b becomes the same height as the outer wall 31 of the L-shaped concrete foundation block 3a. An opening 36 is formed by punching out the side surface portion of the I-shaped concrete foundation block 3b and is surrounded by the connected concrete foundation block 3, and is formed on the inner surface of the improved ground 2a. On the ground, the improved ground 2b is generated up to the middle position of the height of the opening 36. As in the first embodiment, the heat insulating material 5 is disposed on the inner surface of the outer side wall 31. A reinforced concrete slab 4 is struck on the improved ground 2 b, and a heat insulating material 6 is disposed on the reinforced concrete slab 4.

  The foundation structure thus constructed has a deck structure as in the first embodiment, and a base 11 is placed on the reinforced concrete slab 4 and a column / outer wall 12 is erected on the base 11 to build the foundation structure. Put a thing on it. An outer heat insulating material 51 is disposed on the outer surface of the outer wall 12, and the outer heat insulating material 51 is continuous with the heat insulating material 5 disposed on the inner surface of the outer wall 31 of the concrete foundation block 3.

  Also in the above embodiment, the outer heat insulating material 51 disposed on the outer wall 12 of the building is provided in a state of being continuous with the heat insulating material 5 disposed on the inner surface of the outer side wall 31 of the concrete foundation block 3. As in the first embodiment, the construction period can be shortened and the cost can be reduced.

  Next, an external heat insulating material construction structure for a building according to a third embodiment of the present invention will be described. FIG. 3 shows a cross section of a fabric foundation structure completed by applying an external heat insulating material construction structure for a building according to the present invention. As in FIG. 1, the installer forms an improved ground 2 a in the vicinity of the outer periphery of the floor shape of the building with respect to the foundation ground 1, and a concrete foundation having a predetermined length is formed on the upper surface of the improved ground 2 a. A plurality of blocks 3 are connected in the length direction and assembled.

  In this concrete foundation block 3, as in FIG. 2, the heat insulating material 5 is disposed on the inner surface of the outer wall 31, and an opening 36 is formed by punching a part of the I-shaped concrete foundation block 3b. On the inner side surrounded by the connected concrete foundation block 3 and on the inner surface of the improved ground 2a, the split stones 7 are generated up to the height of the opening 36. A reinforced concrete slab 4 is generated on the cracked stone 7, and a heat insulating material 6 is disposed on the reinforced concrete slab 4.

  The foundation structure thus constructed has a deck structure as in the first embodiment, and a base 11 is placed on the reinforced concrete slab 4 and a column / outer wall 12 is erected on the base 11 to build the foundation structure. You can put things on it. An outer heat insulating material 51 is disposed on the outer surface of the outer wall 12, and the outer heat insulating material 51 is continuous with the heat insulating material 5 disposed on the inner surface of the outer wall 31 of the concrete foundation block 3.

  Also in the above embodiment, the outer heat insulating material 51 disposed on the outer wall 12 of the building is provided in a state of being continuous with the heat insulating material 5 disposed on the inner surface of the outer side wall 31 of the concrete foundation block 3. As in the first embodiment, the construction period can be shortened and the cost can be reduced.

  The present invention is not limited to the configuration of each of the embodiments described above, and various modifications can be made without departing from the spirit of the invention. In the said embodiment, although what provided the some groove | channels 31a and 31b in the bottom wall 3c of the L-shaped concrete foundation block L was shown, you may provide one or three or more. . However, when there is only one groove, the width dimension between the outer wall 3a and the inner wall 3b is constant.

  Further, the concrete foundation block 3 may be made of a U-shaped concrete foundation block that cannot be divided.

Sectional drawing of the foundation structure of the building which concerns on the 1st Embodiment of this invention. Sectional drawing of the foundation structure of the building which concerns on the 2nd Embodiment of this invention. Sectional drawing of the foundation structure of the building which concerns on the 3rd Embodiment of this invention.

Explanation of symbols

1 foundation ground 2a improved ground 2b improved ground 3 concrete foundation block (foundation structure)
3a L-shaped member 3b I-shaped member 31 outer wall 32 bottom wall 33 inner wall 34 groove 35 groove 36 opening 4 reinforced concrete slab 5 heat insulating material 51 outer heat insulating material 6 heat insulating material 7 chestnut stone 11 base 12 pillar / wall

Claims (1)

An improved ground with a predetermined depth is generated for at least the approximate floor shape of the building with respect to the foundation ground,
On the improved ground, a plurality of concrete foundation blocks of a predetermined length having a substantially U-shaped cross section having an outer wall, an inner wall, and a bottom wall are connected and assembled in the length direction.
A heat insulating material such as urethane is disposed on the inner surface of the outer wall of the connected concrete foundation block,
The concrete foundation block is filled with concrete, the foundation of the building is placed on the concrete, and the outer heat insulating material disposed on the outer wall of the building is the heat insulating material disposed on the inner surface of the outer wall of the concrete foundation block A construction structure for external heat insulating material for buildings, characterized in that it is provided in a continuous state.

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