JP2945792B2 - Foundation structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foundation which is made of precast concrete and has a footing and a foundation beam erected on the footing to transmit a load from a superstructure to the ground.

[0002]

2. Description of the Related Art There are various types of foundation structures for transmitting a load from a superstructure to the ground. Hereinafter, a fabric foundation (continuous footing foundation) will be described as an example.

[0003] Recently, from the viewpoint of shortening the construction time on site and improving product management such as dimensional accuracy, the cloth foundation is made of precast concrete, and footing is installed at a factory or the like. Foundation pillar) is produced with high accuracy. When building a house or the like using this fabric foundation, holes for piping for facilities such as water and sewage are required, but the location and number of holes for piping are based on the planning of the house, equipment specifications and site There are various types depending on the shape and the like. Therefore, conventionally, the positions of the holes for piping provided in the cloth foundation have also been designed according to individual houses and the like.

However, since such a method is inefficient, a plurality of piping holes are formed in advance at predetermined intervals in a foundation beam at the stage of factory production, and the necessary piping holes are selected on site. And use it. An example of such a technique is disclosed in Japanese Utility Model Laid-Open No. 60-438, and will be briefly described below with reference to FIGS.

[0005] As shown in FIG. 5, in this foundation structure, in a cloth foundation 104 composed of a footing 100 and a foundation beam 102 erected on the footing 100, the lower end of the foundation beam 102 is rectangularly arranged at a predetermined interval. A plurality of through-holes 106, 108, 110 for piping having a shape are formed.
Then, at the site, as shown in FIGS. 6 and 7, the through hole 106 located at a position close to the piping path is selected from the through holes 106, 108, and 110 for the piping.
The pipe 112 is guided into the inside of the pipe 06. When the plumbing is completed, backfill work is performed.

[0006]

However, in a foundation of a house or the like, the depth of the ground is generally shallow, and a pipe having a diameter dimension P close to the distance H with respect to the distance H from the ground surface to the upper surface of the footing 100 is generally used. When 112 is buried, the fogging amount of the ground becomes very small. Therefore, the gap 114 is formed on the ground surface.
(See FIG. 7). Here, as a result, when the unused through-holes 108 and 110 for the piping are buried in the state as they are, there is a problem that small animals such as rainwater and rats enter under the floor from the gap 114.

Conventionally, in order to solve this problem, the unused through-holes 108 and 110 for piping have been closed with mortar or the like before backfilling. Therefore, there is a problem that work on site becomes complicated.

The present invention has been made in consideration of the above-described circumstances, and has as its object to obtain a basic structure which does not require an operation of closing an unused guideway before backfilling even when a plurality of guideways for piping are provided. I do.

[0009]

SUMMARY OF THE INVENTION The present invention relates to a foundation structure which is made of precast concrete and includes a footing and a foundation beam erected on the footing to transmit a load from an upper structure to the ground. A plurality of guide beams are provided at predetermined intervals in a portion of the beam close to the footing, and are provided with piping guide paths which are crushably closed at a part of the thickness of the foundation beam.

[0010]

In the foundation structure according to the present invention, a plurality of guide paths for piping are provided at predetermined intervals in a portion of the foundation beam close to the footing, and moreover, the foundation beam is partially crushably closed at a part of its thickness. Therefore, a guide path necessary for piping can be appropriately selected, and the pipe can be passed simply by crushing a part of the thickness. At this time, since the unused piping guideway is still closed by the part of the thickness, it is not necessary to close the piping hole with mortar or the like before backfilling as in the related art. Accordingly, work efficiency at the site is improved. Further, in the state after backfilling, since the guideway for piping is closed by the part of the wall thickness, even if a part of the guideway for piping is exposed after backfilling, rainwater and small animals enter. And appearance quality is also improved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the basic structure according to the present invention will be described below with reference to FIGS. 1 and 2
Is shown in a state (a productized state) before a pipe 24 to be described later is piped.

As shown in FIG. 2, the cloth foundation 10 includes a footing 12 having a rectangular shape in plan view and a foundation beam 14 erected along the longitudinal direction of the footing 12 at a widthwise intermediate portion of the footing 12. Consists of By continuously arranging the foundation beams 14, a lower structure such as a house, that is, a foundation is formed. Then, a house or the like (not shown) is constructed on the cloth foundation 10, and the load of the house or the like is applied to the cloth foundation 1.
0 to the ground 16 (see FIG. 3).

The cloth base 10 is made of precast concrete. A footing 12 is provided at a lower portion of the foundation beam 14, that is, at a portion where the footing 12 is joined.
Are formed at regular intervals along the longitudinal direction of the pipe. Of the guide paths 18, 20, 22 for the pipes, necessary guide paths for the pipes (for example, the guide paths 18 for the pipes) are appropriately selected at the site, and the pipes 24 for facilities such as water supply and sewage are selected. Are arranged to penetrate.

As shown in FIG. 1, the guide paths 18, 20, and 22 for these pipes are in a state where a part of the thickness of the foundation beam 14 outside the building (the arrow OUT side in FIG. 1) is left. Is formed. Part of this thickness, that is, the closed portions 26, 2
The guide paths 18, 20, 22 for pipes are closed by 8, 30. The outer surfaces of the closed portions 26, 28, and 30 are flush with the outer surfaces of the foundation beams 14, and the thickness B is set to be extremely thin. Therefore, the closing portions 26, 28, and 30 can be easily crushed with a hammer or the like (not shown), and the crushing turns the guide paths 18, 20, and 22 for pipes into through holes.

The operation of this embodiment will be described below. The cloth foundation 10 made into a precast concrete at a factory or the like
The product is in the state shown in FIGS. 1 and 2. In this state, the cloth foundation 10 is carried into the site, and is appropriately arranged continuously in the ground to constitute a substructure such as a house as a continuous footing foundation.

At the time of piping, the guide paths 18, 2
The pipe guide path 18 close to the pipe path of the pipe line 24 is selected from the pipes 0 and 22, and the worker taps it with a hammer (not shown) to break the blocker 26 (FIG. 3 shows the blocker). 26 is crushed, and the pipe guide path 18 is shown as a through hole.) After the crushing of the closing portion 26, the conduit 24 is arranged to penetrate. Thereafter, the backfilling operation is performed until a predetermined ground surface (see FIG. 3) is reached. In addition, when this cloth foundation 10 is used as a foundation of a house or the like, the depth of the root is shallow as shown in FIG. 3, but when the cloth is used as a foundation of a house or the like in a cold region or the like, the root is inserted. The depth is made deeper.

As described above, in the present embodiment, the closed portions 26, 28, 3
Guide paths 18, 2 for a plurality of pipes closed by
0, 22 are provided, only the closed portion 26 of the guideway 18 for the used pipe is crushed, and the guideway 20 for the unused pipe is used.
Since the closing portions 28 and 30 of the 22 are configured to be left as they are, it is not necessary to close the through holes that are not used before backfilling with mortar or the like as in the related art. Therefore, work efficiency on site can be improved.

Further, even if the soil on the surface is shaved by the flow of rainwater or the like in the state after the backfilling and the vicinity of the upper ends of the closed portions 28 and 30 is exposed, no gap is generated.
Therefore, it is possible to prevent small animals such as rainwater and rats from entering under the floor. Further, the closed state of the guideways 20, 22 for piping can be maintained by the closed portions 28, 30 flush with the foundation beam 14, so that the appearance quality of a house or the like due to a gap is not reduced.

Further, guide paths 1 for a plurality of pipes are provided at regular intervals.
Since the fabric bases 8, 20, and 22 are formed, the fabric base 10 can be produced according to a uniform standard, which can contribute to mass production.

In this embodiment, the closing portions 26, 28,
The closing portions 26, 28, 30 are provided so that the outer surface of the building 30 and the outer surface of the foundation beam 14 are flush with each other, but the position of the closing portions 26, 28, 30 is not limited to this. Instead, as shown in FIG. 4, a configuration in which the closing portion 40 is formed at the intermediate portion in the thickness direction of the foundation beam 14 may be employed. When used as a foundation for a house or the like other than in a cold region, it is generally susceptible to irregularities due to a shallower root depth, and therefore, a blockage that is flush with the outer surface of the building shown in FIG. Parts 26, 2
It is preferable to apply 8, 30. Conversely, when used as a foundation for a house in a cold region, it is generally unaffected by unevenness because the depth of the root is deepened. Also, it is preferable to apply the closing part 40 provided at the middle part in the thickness direction shown in FIG. 4 which can confirm the position of the piping guide path 18 and is rich in workability.

Further, the closing portions 26, 28, 30 of the present embodiment
The outside surface of the building is concrete ground,
Closed portions 26, 28, 30 on the outer surface of the building,
Identification marks indicating the positions of 28 and 30 may be added to facilitate the work.

[0022]

As described above, the basic structure according to the present invention can be used even when a plurality of guide paths for piping are provided.
There is an excellent effect that an operation of closing an unused guideway before backfilling becomes unnecessary.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along line 1-1 in FIG. 1 showing a cloth foundation according to an embodiment of a foundation structure according to the present invention.

FIG. 2 is a side view of the cloth foundation of FIG. 1 as viewed from the outside of the building.

3 is a cross-sectional view corresponding to FIG. 1, showing a state in which a blockage that closes a guide path for piping provided on a foundation beam of the cloth foundation in FIG.

FIG. 4 is a cross-sectional view corresponding to FIG. 1 and showing a modified example of the closing portion of FIG. 1;

FIG. 5 is a perspective view showing a cloth foundation according to a conventional example.

6 is a cross-sectional view taken along the line 6-6 in FIG. 5, showing a state in which a pipeline is disposed through one of the through holes for piping in FIG.

FIG. 7 is a side view corresponding to FIG. 5, showing a pipe through-hole in the pipe through-hole of FIG. 5 and an open state;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cloth foundation 12 Footing 14 Foundation beam 18 Guideway for piping 20 Guideway for piping 22 Guideway for piping 24 Pipeline 26 Closed part (partially thick) 28 Closed part (partially thick) 30 Closed part (Part of wall thickness) 40 Closed part (part of wall thickness)

Continued on the front page (72) Inventor Hiroyuki Arai 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation (72) Inventor Tetsuro Hanaki 1 Toyota Town Toyota City, Aichi Prefecture Toyota Motor Corporation (72) Invention Inventor Toshihiko Ooka 65, Kamikomi-cho, Izumo, Toyota-shi, Aichi Prefecture Inside Toyota Soken Co., Ltd. (58) Investigated field (Int.Cl. ⁶ , DB name) E02D 27/01 101

Claims (1)

(57) [Claims] 1. A base structure which is made of precast concrete and includes a footing and a foundation beam erected on the footing, and transmits a load from an upper structure to the ground, and a portion of the foundation beam close to the footing. A plurality of pipes are provided at predetermined intervals at a predetermined interval, and are provided with guide paths for pipes which are closed so that they can be crushed by a part of the thickness of the foundation beam.