JP3166175U - Reinforced concrete foundation formed from lightweight building materials - Google Patents

Abstract

Provided is a reinforced concrete foundation having a light-weight, high-compression-strength backfill building member laid flat in a building, such as a house, an apartment house, a store, a factory, and a warehouse. Reinforced concrete that does not require processing or assembly of a form material as in the conventional foundation, uses a form panel only on the outer side of the outer standing upright, and has a lightweight and high compressive strength core block 2 inside the foundation. By forming it, it forms a foundation without an inner formwork that is lightweight, has thermal insulation performance, and maintains shear strength. [Selection diagram] Fig. 1

Description

  The present invention is a reinforced concrete that has a lightweight, high-compression backfill building material (hereinafter referred to as a core block) laid flat in the foundation of a building such as a house, apartment house, store, factory or warehouse. It is about the basics.

  Conventional solid foundations and pressure plate foundations are foundations comprising a foundation bottom plate, an outer peripheral rise integrally formed with the bottom plate, and an internal rise. In addition, the earth foundations used in stores, factories, warehouses, etc. are provided with a floor slab that matches the upper end of the outer peripheral standing foundation or the upper end of the internal underground beam, and crushed stone and backfill soil are used in the lower part. It is the foundation that has been.

In Patent Document 1, a solid foundation composed of a bottom plate portion of a foundation and an upright portion formed integrally with the bottom plate portion is constructed, and a foamed polystyrene block is laid on the upper surface of the foundation bottom plate portion. A foundation for placing concrete by placing concrete slabs on top is disclosed.
JP 2006-348531 A

  The foundation of Patent Document 1 is suitable for a foundation with a floor between floors used in stores, factories, warehouses, etc., but is not suitable for a foundation such as a building with many partitions such as a general house or apartment.

  The basis of Patent Document 1 is limited to a foamed polystyrene block, but a lightweight foamed concrete block having the same effect, a foamed polystyrene or foamed urethane, a solidified waste chip material, a balloon-type reinforced plastic that traps air, or for packaging By manufacturing a building member for backfilling using a bubble cushioning material or cardboard, the cost can be further reduced.

  For solid foundations such as houses, the bottom plate of the foundation is designed as a pressure-resistant plate, and the thickness of the pressure-resistant plate is set so that it can withstand horizontal loads such as top loads, ground reaction forces, and earthquakes. Therefore, cost and labor are required.

The present invention has a minimum foundation height of 300 mm and a foundation penetration depth of 120 mm as described in the solid foundation specified in the Building Standards Law and the same notification (Birth 12 Year Building Standards Law Notification 1347) Reduces costs, eliminates the need for excavation and backfilling of extra topsoil, can be used without excavating hard topsoil even if the ground is soft, and can reduce the thickness of the bottom plate of the foundation and the thickness of the soil slab .
Here, the basics of the present invention will be explained in an easy-to-understand manner. When the foundation is compared with a wharf, the insulator is the core block and the skin of the wharf is reinforced concrete. The insulator and the skin are integrated to have the strength, strength, and heat insulation as the foundation, and the weight of the foundation can be reduced.
In addition, since the outer periphery and internal upright can be configured by arranging the cuboid wharves at necessary intervals, a new foundation that eliminates the need for internal formwork, reduces construction materials and labor, and shortens the work period. The purpose is to provide.

Since the present invention has been described above, the following effects can be obtained.
(1) No need for internal formwork, reducing construction materials and labor, and shortening the work period.
{Circle around (2)} Excessive excavation and backfilling of the topsoil is not required, and even when the ground is soft, a hard topsoil can be used, and the thickness of the bottom slab and the soil slab of the conventional foundation can be reduced to reduce the weight.
(3) Since the core block is lightweight and has high compressive strength, it can be easily transported and installed.
(4) Since it has a reinforced concrete integrated structure with a core block, even if the concrete parts above and below the core block are made thin, the shear strength is maintained and the performance beyond the solid foundation can be maintained.
(5) The use of polystyrene foam or urethane in the core block, balloon-type reinforced plastic with air confined, waste chip material hardened, bubble cushioning material for packaging, cardboard, etc. reduces industrial waste and reduces chip material. Since it is only hardened into a flat plate by heat treatment and adhesive mixing, there is no recycling cost and the generation of carbon dioxide is low, and a foundation using an environmentally friendly core block can be provided.
(6) The material of the core block has an effect as a heat insulating foundation for preventing heat bridges in the soil or from outside the building.

  It is the perspective view which arrange | positioned the core block of this invention foundation.   It is an AA 'cross-section enlarged perspective view of FIG.   It is a cross-sectional enlarged view of this invention foundation.   It is sectional drawing which shows the construction procedure of this invention foundation.   It is a top view of one Example of the foundation of this invention.   It is a completion perspective view of the foundation of the present invention.   It is another implementation cross-sectional view of the foundation of this invention.   It is sectional drawing which shows the other implementation construction procedure of this invention foundation.   It is a perspective view which shows the other Example of the core block of this invention foundation.   It is a perspective view which shows the other Example of the core block of this invention foundation.

Embodiments will be described with reference to the drawings.

The construction procedure of the foundation 1 of the present invention shown in FIGS. 1 to 6 is constructed in accordance with a construction with a minimum penetration depth and a minimum foundation height in accordance with the Building Standard Act, and the first concrete to the top of the bottom slab By placing and placing the core block at a predetermined location and placing the concrete for the second time up to the top of the foundation, a foundation having a square cross section having the core block is completed.

FIG. 1 is a perspective view in which a core block 2 is disposed at a predetermined position after the first concrete placement to the upper end of the bottom plate of the foundation 1 . As a result, an external upright 4 is formed by the gap between the outer peripheral formwork panel 3 and the core block 2, and the internal upright 5 is formed in a gap between the core block 2 and the core block 2 inside the foundation as a simple formwork material. Constitute. Here, the illustration of the reinforcing bars for the purpose of rigid joint with concrete as shown later is omitted.

    FIG. 2 is an AA ′ cross-sectional enlarged perspective view of FIG. 1, and an external upright 4 is configured between the core block 2 disposed at a predetermined position inside the foundation and the outer peripheral formwork panel 3. An internal rise 5 is formed in the gap between them. Here, the illustration of the reinforcing bars is omitted. Although not shown in the figure, a groove having continuous recesses is provided at a predetermined location on the surface of the core block 2 so that a water supply / drainage pipe, an electric wiring pipe, or the like can be embedded. In addition, the one-dot broken line of illustration shows the top end level 7-2 of the solid slab 7 comprised by the second concrete placement. Furthermore, in areas where the freezing depth is regulated, it is natural to dig deeper at the lower end of the outer periphery up to the reference depth.

FIG. 3 is a sectional view of the foundation 1 and FIG. 4 shows a section after the first concrete placement. The construction procedure is shown below using these figures.

First, the outer periphery formwork panel 3 of FIG. 4 is installed. In this case, the outer periphery formwork panel 3 may be a plywood for formwork, a steel formwork, a plate-like heat insulation formwork, and a cardboard formwork. Inside the foundation 1, the reinforcing bar 6-1 of the bottom plate 6, the reinforcing bar 4-1 of the external rising 4, and the reinforcing bar 5-1 of the internal rising 5 are assembled so as to be rigidly connected.

  The first concrete placement is performed up to the upper end of the bottom plate 6 shown in FIG. After the concrete is placed, the core block 2 is disposed at a predetermined position, and although not particularly shown, an adhesive is used so that the core block 2 is not shifted left and right, or is fixed with a temporary fixing metal fitting.

The reinforcing bars 7-1 of the solid slab 7 shown in FIG. 4 are assembled and arranged so as to be rigidly connected to the external upright 4 and the internal upright 5. At this time, the second concrete is placed up to a solid slab top level 7-2 indicated by a one-dot broken line.
As a result, the bottom plate 6 and the outer peripheral upright 4, the internal upright 5 provided in the gap between the core blocks 2 laid at predetermined positions in a flat plate shape, and the solid slab 7 provided on the upper surface of the core block 2 are It is a foundation formed of concrete that is shaped like a square, and the reinforcing bars 4-1, 5-1 and 6-1 for the purpose of rigid joining are applied in a square shape. Be the basis.

  Further, the base 8 shown in FIG. 3 can be installed at a predetermined location, and the packing material 8-1 can be used under the base. It is also possible to lay water supply / drainage pipes / electrical wiring pipes using the gap between the base and the top of the foundation made of this packing material.

FIG. 5 shows the main base 1 in a plan view, the outer standing upper end 4 and the inner standing upper end 5 are indicated by broken lines, and the single core block 2 is indicated by diagonal lines. Here, the size of the core block alone is suitably about 900 mm × 1800 mm, 900 mm × 1365 mm, and 900 mm × 900 mm. FIG. 6 is a perspective view of FIG. 5 and shows the completion of the foundation 1 .

FIG. 7 is a cross-sectional view showing another embodiment of the foundation 1 , and FIG. 8 shows a cross-section of the embodiment after the first concrete placement. Other examples are shown below using these figures.

  First, FIG. 8 shows a moisture-proof concrete 9 that replaces the bottom slab 6, and a wire mesh 9-1 is installed instead of the reinforcing bar 6-1. Thereby, it is possible to set the minimum reinforcing bar and concrete thickness to prevent moisture from the soil and cracking of the concrete, and the core block 2 can be easily installed and fixed.

According to another embodiment shown in FIG. 7 and FIG. 8, the outer peripheral rise 4, the internal rise 5 provided in the gap of the core block 2 laid in a flat plate at a predetermined location, and the upper surface of the core block 2 are provided. The solid slab 7 is a foundation formed of concrete in a U shape, and the reinforcing bars 4-1, 5-1 and 7-1 for the purpose of rigid joining are applied in a U shape, and the bottom plate 6 is a foundation of a building characterized by a moisture-proof concrete 9 that prevents moisture from underground. The moisture-proof concrete 9 can be reduced in thickness, and the solid slab 7, the core block 2, and the moisture-proof concrete 9 can exert an effect as an integrated pressure-resistant panel. Thereby, the workability can be further improved, the work period can be shortened, and the cost can be reduced.

  Further, another embodiment of the core block 2 shown in FIG. 9 is a core block in which the core block 2 body is made of a packing material or a cardboard core material for partitioning / partitioning, and a corrugated cardboard material 2-1 which is waterproof and waterproof is overlapped. By using 2, the cost can be further reduced. In this way, by using a corrugated cardboard material for the core block 2 main body, ecology and resource saving can be achieved by using recycled paper.

Furthermore, in another embodiment of the core block 2 shown in FIG. 10, the core block 2 main body is a packing bubble cushioning material 2-2, and a corrugated cardboard frame 2-3 and a corrugated cardboard lid 2-4 are used as auxiliary materials. , Further ecology and resource saving can be achieved and the cost can be reduced.
Thus, the material of the core block 2 main body is not particularly limited as long as it is a material that can obtain the same purpose, action, and effect of the present foundation.

  Conventional solid foundations and pressure plate foundations are foundations composed of a foundation bottom plate, an outer peripheral rise integrally formed with the bottom plate, and an internal rise. In addition, the earth foundations used in stores, factories, warehouses, etc. are provided with an outer peripheral foundation or an interstitial floor slab that matches the upper end of the internal underground beam, and crushed stone and backfill soil are used at the bottom. Is the foundation. These conventional foundations require a formwork material for assembling the outer peripheral upright portion and the inner upright portion, and an assembly process thereof. In many cases, this formwork is processed in advance in a factory and then carried on-site for assembly. Therefore, cost and construction period are required. Therefore, the following can be said by using the basis of the present invention.

  There is no need to process and assemble the formwork like the conventional foundation, and the formwork can be done simply by using the formwork panel only on the outside of the outer periphery and placing the core block inside the designated place. Complete. This eliminates the need for an internal formwork material, greatly reducing construction materials and labor and shortening the construction period.

Furthermore, since it is a reinforced concrete integrated structure with a core block, even if the concrete parts above and below the core block are made thin, the shear strength is maintained and the performance beyond the solid foundation can be maintained.
It also eliminates the need for excavation and backfilling of the extra topsoil, and can be used without excavating the hard topsoil even if the ground is soft, and the thickness of the bottom slab and soil slab and the amount of rebar can be reduced. Weight reduction is achieved.

  Use of a lightweight, high-compressive core block facilitates transportation and installation work, and further reduces the weight of the foundation itself, which advantageously acts as a foundation on soft ground.

  By using foamed polystyrene, foamed urethane, solid waste chip material in the core block, balloon-type reinforced plastic that traps air, or foam cushioning material or cardboard for packaging, industrial waste is reduced, and chip material is heat treated. It is possible to provide an environmentally friendly book base that is less expensive and less carbon dioxide generated during recycling.

  By using the material characteristics of the core block and the outer peripheral heat insulating formwork panel, heat bridges from the outer periphery of the foundation, the soil, and the inside of the building can be prevented, so that it has an effect as an insulating base.

1 is the basis of the present invention.
2 is a core block.
3 is an outer periphery formwork panel.
4 is an external upright part.
Reference numeral 5 denotes an internal upright part.
6 is a bottom plate.
7 is a solid slab.
8 is a foundation.
9 is moisture-proof concrete.

Claims (3)

In a foundation consisting of a concrete bottom slab of the foundation and a concrete riser on the outer periphery formed integrally with the concrete bottom slab,
A building foundation characterized in that a lightweight building member is laid in a flat plate shape on the concrete top of the bottom slab to form a simple formwork. In the building foundation according to claim 1,
The concrete bottom plate and the outer concrete stand, the internal concrete stand provided in the gap between the lightweight building members laid in a flat plate at a predetermined location, and the solid concrete provided on the upper surface of the lightweight building member The foundation of a building, characterized in that the slab is a foundation formed of concrete in a square shape and is provided with reinforcing bars for rigid joints. In the foundation of the building according to claim 1 and claim 2,
The outer peripheral concrete stand, the internal concrete stand provided in the gap between the lightweight building members laid flat at a predetermined location, and the solid concrete slab provided on the upper surface of the lightweight building member The foundation of a building, which is made of concrete that is shaped like a square, and has a reinforcing bar for the purpose of rigid joining, and the concrete slab is made of moisture-proof concrete that prevents moisture from underground .

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