JP2019214882A - Entrance structure of building - Google Patents

Abstract

To provide an entrance structure of a building which can reduce construction of foundation around an entrance dirt floor.SOLUTION: An entrance structure 60 of a building has: a first-story floor member 10 supported via bundle members 6 on dirt concrete 5; an entrance upstep frame 20 arranged on an entrance dirt floor side of the first-story floor member 10; and block members 30 for increasing height which is arranged on the dirt concrete 5, forms an entrance dirt floor 2 and has a surface finish layer 40 thereon. In a periphery of the entrance dirt floor 2, foundations 1 are provided at positions corresponding to an exterior wall of the building while no foundation 1 is provided at positions corresponding to inside of an entrance room of the building.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an entrance structure of a building.

  A cloth foundation or a solid foundation is applied to the foundation of the building, and an outer wall is placed on these foundations. For example, taking the cloth foundation as an example, the backfill soil is constructed above the footing forming the cloth foundation, and the interstitial concrete (or holding concrete) is constructed on the backfill soil.

  Turning to the entrance of the building, the cross-sectional view shown in FIG. 5 (a cross-sectional view cut in the middle of the rising of the fabric foundation) and the vertical cross-sectional view shown in FIG. 6 (view taken along the line VI-VI in FIG. 5) As shown in the figure, the entrance has a gap between the entrance soil and a step between the entrance soil and the first floor material, and the first floor material is supported on the bundle supported by the bundle fixed to the concrete between the soil. It will be installed, and an ascending frame (partitioning material) will be attached to the end of the floor material on the first floor. The top level of the backfill soil for the slab buried between the entrance soils is generally raised so as to be higher than the top level of the backfill soil below the first floor material. It is necessary to retain the backfill soil for the soil. Therefore, as shown in FIGS. 5 and 6, around the entrance soil, in addition to the cloth foundation A supporting the outer wall, a fabric foundation B for retaining the backfill soil for the soil on the entrance room side is constructed. Construction is performed by the cloth foundations A and B to surround the backfill soil for the slab below the entrance soil. As shown in FIG. 6, an entrance is formed on the backfill soil for soil by applying a surface finishing layer in which tiles are attached to the surface of mortar or the like.

  As described above, in the conventional entrance, since it is necessary to construct the cloth foundation B (cloth foundation on the side of the entrance room) for retaining the backfill soil for the dirt below the dirt between the entrances, there is a problem that construction labor is required. have. Of course, this problem concerning construction work arises when a new building is constructed, but the same applies to the renovation of a building, such as adding or changing an entrance (this entrance also includes an entrance). Can occur. In addition, because the backfill soil is used to raise the height, it is necessary to increase the width of the footing on the cloth foundation in order to withstand the earth pressure caused by the backfill soil. In addition, the increase in the scale of the cloth foundation leads to further promoting the work of constructing the cloth foundation.

  Therefore, a basic structure has been proposed which reduces the weight of the foundation by reducing the weight of the backfill material. Specifically, a material in which foam-mixed styrene or the like is mixed with cement is filled in an interior space of the slab concrete and solidified, thereby forming a lightweight base structure (for example, Patent Document 1, 2).

JP 2000-120077 A JP-A-5-112950

  However, the basic structures described in Patent Literatures 1 and 2 are structures that are constructed by filling a material in which styrene foam or the like is mixed with cement in a space surrounded by a cloth foundation. Must be surrounded by a cloth foundation. The point of having the configuration of being surrounded by the cloth foundation in this way is the same as the conventional entrance structure already described with reference to FIGS. There is no change.

  The present invention has been made in view of the above problems, and has as its object to provide an entrance structure of a building that can reduce the construction of a foundation around an entrance soil.

In order to achieve the above object, one embodiment of the entrance structure of a building according to the present invention is:
The first floor material supported on the concrete between the soil through a bundle,
An ascending frame arranged on the entrance floor side of the first floor material,
A block material for raising the slab, which is arranged on the slab concrete and forms a front entrance slab and has a surface finishing layer on the surface,
In the surroundings between the entrance lands, a foundation is provided at a position corresponding to the outer wall of the building, and no foundation is provided at a position corresponding to the entrance room side of the building.

  According to this aspect, since the block material for raising is applied on the slab concrete between the porch soils, the shape of the block material does not collapse, so that it is not necessary to surround the porch between the porch soils with a foundation such as a cloth foundation. . Therefore, the construction of the foundation (cloth foundation B in FIGS. 5 and 6) at the position corresponding to the entrance room side of the building is unnecessary, and the construction of the foundation can be reduced. Here, the “entrance” includes not only a normal entrance, which is a main entrance of the building, but also a service entrance, and further includes an indoor terrace provided inside the discharge window. The term “foundation” refers to a foundation made of reinforced concrete in which a reinforcing bar is embedded (including both a foundation for on-site construction and a foundation for precast), including a cloth foundation and a solid foundation.

  The block material for raising is a fixed block material, and a single block material may be used to raise the space between the entrance soils, or a plurality of block materials may be stacked to increase the space between the entrance soils. You may. Further, as the block material, various block materials such as a light weight block material, a light weight block material having heat insulation properties, and a hard block material can be applied. Further, the surface finishing layer is formed of mortar, an adhesive, or the like, and a form in which tiles are stuck on the surface at predetermined intervals or a form in which a sheet is stuck can be applied.

  In another aspect of the entrance structure of a building according to the present invention, the block material is formed of foamed plastic.

  According to this aspect, since the block material is formed of the foamed plastic, the weight between the entrance soils is reduced, and the insulation between the entrance soils is provided. In addition, since the foamed plastic has a certain degree of rigidity while being lightweight, it has sufficient load resistance required at the entrance even when it is applied as a material for raising the entrance soil. By reducing the weight of the entrance soil, it is possible to reduce the footing scale of the foundation (for example, a cloth foundation) provided at a position corresponding to the outer wall of the surrounding building between the entrance soils, thereby further reducing the construction work of the foundation. Can be reduced.

  In another aspect of the entrance structure of a building according to the present invention, the block material is formed of a floor material.

  According to this aspect, since the block material is formed of the floor material, the block material is relatively hard, and there is no problem of volume change due to aging such as creep. There is no danger of failure occurring at the location where the material is joined. Here, examples of the plate material include a plywood generally used as a floor material.

In another aspect of the entrance structure of a building according to the present invention, the surface finishing layer has a horizontal portion and a rising portion,
The rising frame and the rising portion are cut off.

  According to this aspect, since the rising frame and the rising portion of the block material are cut off, for example, when a block material made of foamed plastic is applied, even when the block material changes in volume due to aging such as creep. There is no problem that the rising portion is damaged. Therefore, while enjoying the effect of applying the block material formed of the foamed plastic, that is, the effect of reducing the weight between the entrance lands and the heat insulating property, the connection between the up frame and the block material (the surface finishing layer on). Problems that may occur in the unit can be eliminated.

  Another aspect of the entrance structure of a building according to the present invention is characterized in that a recess is provided at a lower end of the rising frame, and the rising portion is fitted into the recess in a state where the rising portion is cut off.

  According to this aspect, since the rising portion of the surface finishing layer is fitted into the concave portion at the lower end of the rising frame in a state in which the rising portion is cut off, a problem that may occur at a portion where the rising frame and the surface finishing layer are joined is eliminated. In addition, a clean parting can be formed between the lower end of the ascending frame and the surface finishing layer. Here, the concave portion may be provided on the back side (the first floor material side) of the lower end of the ascending frame, or may be provided at the center position of the lower end of the ascending frame.

  Another aspect of the entrance structure of a building according to the present invention is characterized in that the rising portion and the rising frame are connected by an elastic material.

  According to this aspect, for example, when a block material made of foamed plastic is applied, even if the block material undergoes a volume change due to aging such as creep, the elastic material expands in accordance with the volume shrinkage of the block material, so that the upward movement can be achieved. The generation of a gap between the frame and the rising portion of the surface finishing layer can be eliminated. In addition, even if a gap may be generated from the beginning of the work between the rising frame and the rising portion of the surface finishing layer due to a construction error, the occurrence of the gap can be eliminated by extending the elastic material. Here, examples of the elastic material include a rubber gasket, a flake formed of polyvinyl chloride, or the like.

  As can be understood from the above description, according to the entrance structure of the building of the present invention, it is possible to reduce the construction of the foundation around the entrance soil.

FIG. 3 is a cross-sectional view of the entrance structure of the building according to the embodiment, which is cut at an intermediate position of the rising of the cloth foundation. FIG. 2 is a vertical sectional view of the entrance structure of the building, taken along the line II-II in FIG. 1. It is a longitudinal cross-sectional view of the other example of the connection part of the rising part of the rising frame and the surface finishing layer. It is a longitudinal cross-sectional view of further another Example of the connection part of the rising part of a rising frame and a surface finishing layer. It is the cross-sectional view cut | disconnected in the middle of the rising of the cloth foundation in the entrance structure of the conventional building. FIG. 6 is a view in the direction of arrows VI-VI in FIG. 5, and is a longitudinal sectional view of the entrance structure of the building.

  Hereinafter, an entrance structure of a building according to an embodiment will be described with reference to the accompanying drawings. In the specification and the drawings, substantially the same components are denoted by the same reference numerals, and redundant description may be omitted.

[Entrance structure of building according to embodiment]
First, an entrance structure of a building according to the embodiment will be described with reference to FIGS. 1 and 2. Here, FIG. 1 is a cross-sectional view of the entrance structure of the building according to the embodiment, which is cut at an intermediate position of the rising of the fabric foundation, and FIG. 2 is a view taken along the line II-II of FIG. It is a longitudinal section of the entrance structure of a building. It should be noted that the characteristics of the entrance structure according to the present embodiment can be easily understood by comparing the description with the conventional entrance structure, so that the following description also refers to FIG. 5 and FIG. In the following description, a cloth foundation will be described as a basis.

  The entrance structure 60 shown in FIGS. 1 and 2 has a cloth foundation 1 at a position corresponding to the outer wall of the building and a cloth foundation at a position corresponding to the entrance room side of the building around the entrance-soil 2. I haven't. The entrance structure 60 includes a cloth foundation 1, a slab concrete 5 laid on the backfill soil 4, and a slab for forming the entrance slab 2 in the surface layer of the slab concrete 5 and having a surface finishing layer 40 on the surface. And a material 30.

  The cloth foundation 1 has a footing 1a and a rising 1b, and a footing 1a is laid on a crushed stone layer and a discarded concrete layer (neither is shown). After the footing 1a and the rising 1b are constructed, the backfill soil 4 is backfilled to a predetermined height of the rising 1b, and after the backfill soil 4 is compacted, the interstitial concrete 5 is constructed on the surface layer of the backfill soil 4. Is done.

  A plurality of bundles 6 are fixed on the slab concrete 5 on the indoor side of the entrance-soil 2, a large pull-out 7 is placed on the bundle 6, and a first floor material 10 is placed on the large pull-out 7. Supported. It should be noted that a joist (not shown) may be supported on the pulley 7 and the first floor material 10 may be supported on the joist. As shown in FIG. 2, an up frame 20 having an L-shaped cross section is connected as a parting material to an end of the first floor material 10 on the side of the entrance soil 2.

  On the other hand, in the entrance soil 2, a plurality (four in the illustrated example) of raising blocks 30 are laid up to a predetermined height on the soil concrete 5, and pins (not shown) or the like for preventing mutual slippage. Fixed. In the illustrated example, four blocks 30 are stacked to increase the height to a predetermined height. However, the thickness may be increased by one thick block.

  Here, the block member 30 has a form formed of a foamed plastic and a form formed of a floor material. In any case, since the fixed block material 30 is applied, there is no possibility that the raised material collapses as in the backfill soil for soil shown in FIG. Surrounding can be dispensed with. Therefore, the construction of the foundation (cloth foundation B in FIGS. 5 and 6) at the position corresponding to the entrance room side of the building is unnecessary, and the construction of the foundation can be reduced.

  In the form in which the block material 30 is formed of foamed plastic, the weight of the entrance soil 2 is reduced, and heat insulation is imparted to the entrance soil 2. In addition, since the foamed plastic has a certain degree of rigidity while being lightweight, it has sufficient load resistance required at the entrance even when it is applied to a raising material in the entrance soil 2.

  Here, foamed plastic is a material obtained by firing a raw synthetic resin at a predetermined firing rate. Examples of the raw synthetic resin include polyurethane (PUR), polystyrene (PS), and polyolefin (mainly, polyethylene (PE) and polypropylene). (PP)), phenolic resin (PF), polyvinyl chloride (PVC), urea resin (UF), silicone (SI), polyimide (PI), melamine resin (MF), etc. Polyurethane foam (sponge, firing rate about 10 to 60 times), polystyrene foam (expandable polystyrene beads, EPS (Expandable Polystyrene Beads: expanded polystyrene)), polyethylene foam (PE foam, PE is low density polyethylene, high Density polyethylene, linear polyethylene, ethylene-vinyl acetate copolymer (EVA) and ethylene-propylene copolymer).

  On the other hand, in the form in which the block material 30 is formed of a floor material, the block material 30 is relatively hard, and there is no problem of volume change due to aging such as creep. There is no risk of failure at the connection point. Here, examples of the floor material include plywood used as a normal floor material, an ALC panel (ALC: Autoclaved Lightweight aerated Concrete, a lightweight high-temperature high-pressure steam-cured concrete), and the like.

  The surface finishing layer 40 formed on the surface of the block 30 has a horizontal portion 41 and a rising portion 42 rising from the horizontal portion 41. Both the horizontal portion 41 and the rising portion 42 are formed with a layer of mortar, an adhesive, or the like, and tiles 43 are stuck on the surface of this layer at predetermined intervals. In addition, a stop frame such as mortar is formed by angle iron 44 at the rear corner of the horizontal portion 41 and the rising portion 42. Note that a sheet may be attached instead of the tile 43. At the same level as the surface finishing layer 40, an entrance porch 3 is constructed on the outdoor side of an entrance door (not shown).

  The front surface of the rising portion 42 of the surface finishing layer 40 (the surface on the side of the entrance soil 2) is arranged so that a part thereof is in contact with the back surface of the rising frame 20 (the surface on the side of the entrance room). The rising portion 42 and the rising frame 20 are cut off from each other (edge cutting portion G in FIG. 2). Since the rising portion 42 of the surface finishing layer 40 on the up frame 20 and the block material 30 is cut off, when the block material 30 is formed of foamed plastic, the block material 30 has a volume change due to aging such as creep. Does not cause a problem such as breakage of the rising portion 42.

  For example, if the rising frame 20 is connected to the rising portion 42, the rising portion 42 is pulled by the volume contraction of the block material 30, and there is a high possibility that the rising portion 42 is damaged such as a crack. Therefore, a problem that may occur at the joint between the up frame 20 and the block material 30 while enjoying the effect of applying the block material 30 formed of foamed plastic, that is, the effect of reducing the weight of the entrance soil 2 and the heat insulating property. Can be eliminated.

  Next, with reference to FIGS. 3 and 4, another embodiment of a joint portion between the rising frame and the rising portion of the surface finishing layer will be described. In the entrance structure 60 shown in FIG. 2, both sides are arranged so that the front surface of the rising portion 42 and the back surface of the rising frame 20 are partially in contact with each other, and are mutually cut off. On the other hand, in another embodiment shown in FIG. 3, the upstairs 20A has a concave portion 20a at the rear corner of the lower end, and the rising portion 42 is fitted into the concave portion 20a in a state where the rising portion 42 is cut off. I have.

  Since the rising portion 42 of the surface finishing layer 40 is fitted into the concave portion 20a at the lower end of the rising frame 20A in a cut-off state, problems that may occur at the joint between the rising frame 20A and the surface finishing layer 40 are eliminated. In addition, a clean parting can be formed between the lower end of the upward frame 20A and the surface finishing layer 40. The recess 20a may be provided at the center of the lower end of the ascending frame 20A or the like, in addition to being provided at the rear corner of the lower end of the ascending frame 20A.

  On the other hand, in still another embodiment shown in FIG. 4, the rising portion 42 of the surface finishing layer 40 and the rising frame 20 are connected by an elastic member 50.

  Since the rising portion 42 and the ascending frame 20 are connected by the elastic member 50, even when the block material 30 is changed in volume due to aging such as creep when the block material 30 made of foamed plastic is applied, the block material may be used. The expansion of the elastic member 50 in accordance with the volume shrinkage of 30 can eliminate a gap between the up frame 20 and the rising portion 42 of the surface finishing layer 40. In addition, even if a gap may be generated between the rising frame 20 and the rising portion 42 from the beginning of the construction due to a construction error, the occurrence of the gap can be eliminated by extending the elastic member 50.

  Here, examples of the elastic material include a rubber gasket, a flake formed of polyvinyl chloride, or the like.

  According to the entrance structure 60 according to the embodiment, the foundation (cloth foundation 1) around the entrance soil 2 can be reduced by applying a fixed block material to the raising material instead of the backfill soil for the soil, The construction cost can be reduced by reducing the labor for constructing the foundation. The entrance structure 60 can be applied not only to a newly-built building, but also to the construction of a entrance (including a doorway etc.) without adding a foundation, even when renovating. In addition, since the block material formed of foamed plastic or floor material is lighter than the backfill soil for soil, the scale of the footing of the cloth foundation 1 to be constructed can be reduced. This also leads to a reduction in the labor required for foundation work.

  Other embodiments in which other components are combined with the configurations and the like described in the above embodiments may be employed, and the present invention is not limited to the configurations shown here. This can be changed without departing from the spirit of the present invention, and can be appropriately determined according to the application form.

  1: cloth foundation (foundation), 2: entrance soil, 5: concrete between floors, 10: 1 floor material, 20: up frame, 30: block material, 40: surface finishing layer, 41: horizontal part, 42: rising part , 60: Entrance structure (entrance structure of building)

Claims (6)

The entrance structure of the building,
The first floor material supported on the concrete between the soil through a bundle,
An ascending frame arranged on the entrance floor side of the first floor material,
A block material for raising the slab, which is arranged on the slab concrete and forms a front entrance slab and has a surface finishing layer on the surface,
The entrance of the building, characterized in that the periphery of the entrance soil has a foundation at a position corresponding to the outer wall of the building, and does not have a foundation at a position corresponding to the entrance room side of the building. Construction.   The entrance structure of a building according to claim 1, wherein the block material is formed of foamed plastic.   The entrance structure of a building according to claim 1, wherein the block material is formed of a floor material. The surface finishing layer has the horizontal portion and a rising portion,
The entrance structure of a building according to claim 2, wherein the rising frame and the rising portion are cut off.   The entrance structure of a building according to claim 4, characterized in that the entrance frame has a concave portion at a lower end thereof, and the rising portion is fitted into the concave portion in a state of being cut off.   The entrance structure of a building according to claim 4, wherein the rising portion and the upward frame are connected by an elastic material.

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