JP3499019B2 - Basement building unit and method for forming basement retaining wall - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a basement building unit and a basement retaining wall forming method, for example, a unit type building constructed by combining a plurality of building units produced in a factory at a construction site. Available.

[0002]

BACKGROUND ART As shown in Japanese Patent Application No. 6-187056,
It has been proposed to construct the basement and the aboveground building with building units produced at the factory. Such a retaining wall of the basement is formed by an outer wall member which is attached to the basement building unit in advance, or is formed in the vertical hole in which the basement building unit is arranged by in-situ casting of concrete slurry or the like.

[0003]

[Problems to be Solved by the Invention] Truck transportation work is performed to transport a basement building unit from a factory to a construction site. At the construction site, a crane is used to suspend the basement building unit in a vertical hole. Is done. However, when the retaining wall of the basement is formed by the outer wall member attached to the basement building unit,
Since the outer wall member is heavy, the center of gravity of the basement building unit may deviate significantly from the center of the unit. As a result, there is a problem in that it is difficult to handle the building unit during truck transportation work, crane lifting work at a construction site, and the like.

On the other hand, when the retaining wall of the basement is formed by in-situ casting of concrete slurry, truck transportation work and crane lifting work of the building unit for basement are easy, but for concrete slurry placement on the side of the vertical hole. There is a problem in that the work at the construction site is complicated and the work efficiency is poor, such as the need to provide a formwork.

An object of the present invention is to satisfy both facilitation of truck transportation work, crane hoisting work, etc. and facilitation of concrete placing work at a construction site, and facilitating retaining wall forming work. The present invention provides a building unit for a basement and a method for forming a retaining wall for the basement.

[0006]

SUMMARY OF THE INVENTION A basement building unit according to the present invention is a composite unit that constitutes a building body of a unit type building.
Of the several building units, this is a basement building unit that is placed in a vertical hole to form a basement .
Pillars and four upper beams erected between the upper ends of these pillars,
A skeleton with a lower beam erected between the lower ends is provided
In addition, this frame constitutes the building body.
Which is also used in multiple building units
An outer wall member for partitioning the inner space of the basement from the outside is attached to a side surface of the frame, and a space for placing concrete slurry is provided inside the outer wall member.

In the above, the outer wall member is preferably made of extrusion-molded cement. However, the outer wall member is not limited to this extruded cement product, and for example, it may be made of other precast concrete, or a wooden product whose surface is covered with a synthetic resin having corrosion resistance, or the like. The surface-treated metal may be used.

In addition, the method for forming a retaining wall of a basement according to the present invention is applied to a plurality of buildings that form a building body of a unit-type building.
Of the units, they are placed in a vertical hole to form a basement. <br /> The basement building unit's four corners are produced at the factory.
Pillars and four upper beams erected between the tops of these pillars
And a skeleton with a lower beam installed between the lower ends.
In addition, this frame is used to
The same shall be used in several building units, and
An outer wall member having a space inside is attached to a side surface of the frame, the building unit for basement is arranged in a vertical hole at a construction site, and then a concrete slurry is placed in the space.

[0009]

In such a basement building unit of the present invention, since the space is provided inside the outer wall member,
When the crane is suspended, the weight of the outer wall member becomes lighter, and the center of gravity of the basement building unit is not largely deviated from the center of the unit by the outer wall member as in the conventional case. Further, since the space is provided inside the outer wall member, the concrete slurry can be placed in the space.

When the outer wall member is made of extrusion-molded cement, the outer wall member is formed by mixing inorganic fibers and the like, extrusion-molding it, and then subjecting it to autoclave curing. And a light weight outer wall member having air bubbles inside. Accordingly, in addition to reducing the weight due to the space provided in the outer wall member, the weight of the material itself is light, so that the weight of the outer wall member can be further reduced.

In the basement retaining wall forming method of the present invention, the outer wall member is preliminarily attached to the basement building unit at the factory, the basement building unit is arranged at the construction site, and then the outer wall member is provided. By placing concrete slurry in the space, it becomes possible to form the retaining wall of the basement.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a unit-type building 10 including a basement building unit according to an embodiment of the present invention. The unit-type building 10 includes a building body 20 in which a plurality of building units are combined, and a roof 30 provided on an upper portion of the building body 20.

The building body 20 is composed of a first-floor building unit 21 forming a first-floor portion of the unit-type building 10, a second-floor building unit 22 forming a second-floor portion, and a basement building unit 23 forming a basement. ing. In this building body 20, a plurality of basement building units 23
Are arranged on the solid foundation 12 provided in the vertical hole 11, and the first-floor building unit 21 is arranged on the upper part of the basement building unit 23 and the cloth foundation 13 provided for the above-ground building.

The first and second floor building units 21 and 22
Is four pillars erected in the four corners and the upper ends of these pillars,
The building unit is a conventional building unit that is a frame assembly including an upper beam and a lower beam that are installed between lower ends, and the roof 30 is also a general roof formed by combining a plurality of roof panels and the like. Therefore, the description of the first-floor, second-floor building units 21, 22 and the roof 30 is omitted here. further,
Since the configurations of the plurality of basement building units 23 are substantially the same, only the basement building unit 23A of the basement building units 23 will be described below.

As shown in FIG. 2, the basement building unit 23A is formed to include a skeleton 40.
The skeleton 40 is provided on the pair of side faces which are at right angles to each other at 0.
An outer wall member 50 for partitioning the inside and the outside is attached. Like the conventional building unit, the skeleton 40 includes four pillars 41 at four corners, four upper beams 42 erected between the upper ends of these pillars 41, and an unillustrated lower part erected between the lower ends. Equipped with beams.

As shown in FIG. 3, the upper beam 4 of the frame 40
2 is a web 42A along the vertical direction, and this web 4
Flange 4 extending from both ends of 2A to the inside of frame 40
2B, and the lower flange 42B of these channel members has an L-shaped bracket 57.
Is attached to the outside of the skeleton 40 by a bolt 58 and a nut 59.

Similarly, the lower beam 43 installed between the lower ends of the columns 41 has a web 43A and a pair of flanges 43B, and the upper flange 43B of these is an L-shaped bracket 60. Are attached by bolts 58 and nuts 59. The bracket 60 is attached so that one of the pair of rear surfaces 60A forming a right angle is in contact with the flange 43B and the other is continuous with the web 43A of the lower beam 43.

Further, the web 43A and the back surface 60A
Also, an L-shaped bracket 61 is arranged with its one rear surface 61A applied to a surface continuous with the bracket 61, and the bracket 61 is mounted by being sandwiched between the outer wall member 50 and the bracket 60 by the bolt 58 and the nut 59. Has been. Further, the bracket 61 is attached so that the other back surface 61A forms a continuous surface with the lower flange 43B of the lower beam 43.

On the other hand, the outer wall member 50 is formed of a pair of plate members 51 standing upright, and its surface is covered with a synthetic resin film to have corrosion resistance. Between the plate materials 51 of each other,
It is a space 52 in which concrete slurry is placed.

Above the outer wall member 50, hanging bolts 53 are provided on both sides in the horizontal direction so as to penetrate through the plate members 51. A nut 55 is screwed into the suspension bolt 53 via a washer 54 so as to sandwich the plate members 51, and the plate members 51 are connected to each other in the state where the space 52 is formed. Similarly, below the outer wall member 50, the plate members 5 are
1 is provided with a bolt 56, and a nut 55 is screwed through a washer 54.

The outer wall member 50 is attached to the frame 40 via the brackets 57 and 60 described above. Specifically, a rectangular cutout 50A is formed at the lower end of each plate member 51 of the outer wall member 50.
A bracket 61 is fitted into the cutout portion 50 to stand upright, and a plate member 51 facing the frame 40 is fixed to the bracket 60 with the bracket 61 sandwiched therebetween as described above. Further, the outer wall member 50 is erected by a plate member 51 facing the skeleton 40 side being applied to a bracket 57, and is mounted by a bolt 58, a washer 62 and a nut 59.
It is fixed to.

In addition to the above, the basement building unit 23A includes a ceiling beam 63, a floor beam 64, a ceiling plate 63 attached to these ceiling beams 63 and floor beams 64, a floor plate 66, and a ceiling plate 65 and a floor plate. The inner wall panel 68 and the like, which are erected on the base 66 via the receiving material 67, are formed.

In such an embodiment, the retaining wall forming work of the basement is performed as follows. In the factory, first, the outer wall member 50 is hung on the hoist by using the hanging bolts 53, the outer wall member 50 is moved to the basement building unit 23A placed on the conveyor, and then the outer wall member 50 is lowered. It is placed on the bracket 61 of the frame 40. Then, one plate member 51 of the outer wall member 50 is placed upright against the brackets 57 and 61, and the outer wall member 50 is fixed to the brackets 57 and 60 with bolts 58, nuts 59, and washers 62. Next, the basement building unit 23A to which the outer wall member 50 is attached is placed on a truck and transported to the construction site.

At a construction site, a solid foundation 12 in a vertical hole 11
The basement building unit 23 that has been formed and transported
A is suspended from a truck by a crane and placed on this solid foundation 12. As a result, as shown in FIG. 3, the lower ends of the plate members 51 of the outer wall member 50 contact the solid foundation 12. Thereafter, concrete slurry is cast from above into the space 52 of the outer wall member 50 to form a retaining wall by making the outer wall member 50 a solid body.

By the way, as shown in FIG. 1, when arranging the basement building unit 23A on the solid foundation 12, it goes without saying that other adjacent basement building units 23 are also arranged in the same manner. At this time, the ends of all the plate members along the vertical direction come into contact with the ends of the plate members facing each other in another adjacent basement building unit, so that the space of each outer wall member is continuous. Then, by placing concrete slurry in this continuous space, a continuous retaining wall surrounding the basement is formed.

With the above, the work for forming the retaining wall of the basement is completed. Further, after the soil generated during the excavation of the vertical hole 11 is backfilled to form the cloth foundation 13, the first floor, the second floor building units 21, 22 and the roof 30 are provided above the cloth foundation 13 and each basement building unit 23. Are combined to complete the unit-type building 10.

According to this embodiment, since the outer wall member 50 has the space 52 between the pair of plate members 51, the weight of the outer wall member 50 is significantly lighter than that of the conventional solid wall member. Become. Therefore, even when the outer wall member 50 is attached only to the pair of side surfaces of the basement building unit 23A that are perpendicular to each other, the center of gravity of the basement building unit 23A is not largely deviated from the center of the unit.

As a result, the basement building unit 23A
Although the outer wall member 50 is attached to the base station, a stable loading state can be obtained when the basement building unit 23A is transported by a truck, and the transport work can be easily performed. Further, even when the basement building unit 23A is suspended by a crane, the center of gravity is not biased, so that the basement building unit 2 can be suspended during suspension.
Since it is possible to prevent a situation in which the 3A is tilted or the like, it is easy to handle and the hanging work can be performed easily.

In forming the retaining wall of the basement, it is sufficient to cast the concrete slurry into the space 52 of the outer wall member 50 at the construction site. As in the conventional case, the concrete slurry casting mold is placed on the side surface of the vertical hole. There is no need for troublesome work such as providing a frame. As a result, the retaining wall of the basement can be easily formed even if the concrete slurry is cast on site.

FIG. 4 shows another embodiment of the outer wall member attached to the basement building unit 23A. Outer wall member 70
Comprises a body 71 made of fiber reinforced extruded cement with air bubbles inside. The main body 71 is provided with a plurality of vertically extending spaces 72. Also,
At the lower end of the main body 71 is the bracket 6 similar to that of the above-mentioned embodiment.
The notch 70A in which the 1 is fitted is provided, and each space 72 is provided.
The solid part between them is the reinforcing part 70B. Suspension bolts 73 are provided on the upper ends of the reinforcing portions 70B. The number of spaces 72 may be appropriately determined in consideration of the overall size of the outer wall member 70 and the like.

As shown in FIG. 5, each hanging bolt 73
Is screwed into a nut 74 embedded in the reinforcing portion 70B, and a wire rope or the like can be hooked to suspend the outer wall member 70 from a hoist or the like. The suspension bolts 73 are adapted to be removed after the wall member 70 is attached to the basement building unit 23A. Further, a nut 75 is embedded on the upper side of the side surface of the reinforcing portion 70B on the frame 40 side, and the outer wall member 7
0 is the bracket 5 with the nut 75 and the bolt 58.
It is fixed at 7. Then, a similar nut (not shown) is also embedded in the lower side, similar to the above-mentioned embodiment,
A bolt is screwed into the nut, and the outer wall member 70 is also fixed to the bracket attached to the lower beam.

According to this embodiment, since the outer wall member 70 is made of fiber-reinforced extruded cement having air bubbles inside, the weight of the outer wall member 70 is further reduced, and the basement to which the outer wall member 70 is attached is attached. Building unit 23
The truck transport work and the crane lifting work of A are further facilitated.

Further, in the above-mentioned embodiment, the outer wall member needs to be assembled with the bolt and the nut, and the space for placing the concrete slurry is adjusted to a predetermined size by adjusting the bolt and the nut. Although it was necessary, in this embodiment, since the outer wall member 70 is integrated, the assembling work is unnecessary, and by forming the outer wall member 70 using a mold or the like, a space of a predetermined size is obtained. 72 can be easily formed, and the outer wall member 70 can be efficiently produced.

Since the extruded cement itself has corrosion resistance, it is possible to save the labor of covering the surface of the outer wall member with the synthetic resin as in the above-mentioned embodiment.

Although each of the embodiments described above is a case of a building having a basement floor and a ground floor, the present invention can be applied to a building having a basement floor or more and a building having three floors or more above the ground.

In each of the above-mentioned embodiments, the basement building unit 23 is arranged only under the part of the first-floor building unit 21, but the basement building unit 23 is arranged under the entire first-floor building unit 21. May be done. Further, although a plurality of basement building units 23 are arranged, the number of basement building units may be one.

[0037]

[0038]

As described above, according to the basement building unit of the present invention, since the space is provided inside the outer wall member and the weight thereof is reduced, the outer wall member is used as the basement building unit. Even when installed, the center of gravity of the basement building unit does not deviate significantly from the center,
It is possible to easily carry trucks and hang cranes, and by placing concrete slurry in the space of the outer wall member, it is possible to form the retaining wall of the basement.

According to the method for forming a retaining wall of a basement according to the present invention, the retaining wall of the basement can be formed simply by placing concrete slurry at the construction site in the space of the outer wall member which is previously attached to the basement building unit in the factory. It can be formed and workability is improved.

[Brief description of drawings]

FIG. 1 is an overall front view of a unit-type building built including a basement building unit according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a basement building unit of the embodiment.

FIG. 3 is a sectional view taken along line III-III shown in FIG.

FIG. 4 is a perspective view showing another embodiment of the outer wall member.

5 is a cross-sectional view taken along line VV shown in FIG.

[Explanation of symbols]

11 vertical holes 23, 23A Basement building unit 50, 70 outer wall member 52, 72 space

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomoki Yanagisawa 2-4-5 Takaido Higashi, Suginami-ku, Tokyo Misawa Homes Inc. (72) Inventor Shigeyasu Murata 2-4-5 Takaido Higashi, Suginami-ku, Tokyo Misawa Homes Incorporated (56) References JP 62-21931 (JP, A) JP 63-300123 (JP, A) Actual flat 2-105448 (JP, U) Actual flat 3-41030 (JP, A) U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) E04H 1/02 E02D 29/00

Claims (3)

(57) [Claims] 1. A plurality of units constituting a building body of a unit type building.
Of the several building units, a basement building unit that is placed in a vertical hole to form a basement, with four pillars at the four corners and four pillars installed between the upper ends of these pillars.
Skeleton with an upper beam of books and a lower beam installed between the lower ends
Is provided, and this frame is composed of a plurality of building units that make up the building body.
The outer wall member for partitioning the inner space of the basement from the outer space is attached to the side surface of the frame , and the space where concrete slurry is placed inside the outer wall member. A basement building unit characterized by being provided with. 2. The basement building unit according to claim 1, wherein the outer wall member is made of extruded cement. 3. A plurality of units constituting a building body of a unit type building.
Out of a number of building units, the basement is located in a vertical hole
At the time of production of the factory of the basement for the building unit to be formed, four
Four pillars in the corner and four erected between the tops of these pillars
A frame with an upper beam and a lower beam installed between the lower ends is installed.
In addition to setting it up, this framework is used to
Similarly, the outer wall member having a space inside is attached to the side surface of the frame, and the building unit for basement is placed in a vertical hole at the construction site, and then the concrete slurry is placed in the space. A method for forming a retaining wall in a basement, which is characterized in that