JP2922697B2 - Basement unit manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method of manufacturing a basement unit.

[0002]

2. Description of the Related Art A basement for storing articles is formed by casting a casting material such as concrete into a mold.

FIG. 3 is a partially cutaway sectional view of a conventional basement. The basement unit C _O includes a floor (not shown), a ceiling 33, and side walls 31, and an opening 32 is provided in the ceiling 33, and the opening 32 is formed by a floor cutout formed on the floor of the ground building. It is an entrance which enters and exits through an opening / closing hatch (not shown) of the section.

[0004] After the basement unit C _O having such a structure is installed underground, it is left at the site for a long period of time until a building above ground is constructed. For this reason, a packing 38 has been attached to the blind cover 39 to protect the inside so that rainwater does not enter the basement unit C _O through the opening 32.

[0005]

However, in the conventional device, the packing 38 is forgotten to be attached to the blind cover 39, or in the case of the structure in which the packing 38 is supported by bolts or the like, a gap is generated due to poor bolt tightening, and rainwater is generated. There was a problem that it leaked and entered the basement unit.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and has an object to provide a manufacturing method in which a drain portion for preventing rainwater from entering a basement unit can be formed simultaneously with the basement unit main body. With the goal.

[0007]

In order to achieve the above object, a method for manufacturing a basement unit according to the present invention comprises an inner frame in contact with the inner surface of the basement unit and an outer frame in contact with the outer surface.
In addition, an opening forming frame for forming an opening of the basement unit is attached to the ceiling forming portion of the main body forming mold in which a portion corresponding to the ceiling upper surface of the unit is opened as a casting surface, A drainage height determining mold for regulating the height of the rising portion formed along the periphery of the opening is provided on the periphery of the opening forming frame in a state of protruding a predetermined length upward, and A drainage width determining form that regulates the width of the part is provided so as to surround the outer periphery of the drainage height determining form, and a casting material is poured into the main body molding die, and the drainage height determining form is formed. By evacuating the space formed by the drainage width determining mold and curing the casting material in a state where the casting material is guided into the space, forming a rising portion along the periphery of the opening. It is characterized by.

The above-mentioned casting material is preferably resin concrete, but it is also generally referred to as concrete, such as ordinary concrete containing gravel and cement, and concrete containing filler such as resin.

[0009]

According to the method of manufacturing a basement unit of the present invention, a casting material is poured into a main body molding die, and the space formed by the drainage height determining mold and the drainage width determining mold is evacuated. The uncured casting material is guided into the space, and when the casting material is cured in that state, a rising portion is formed along the periphery of the opening. The rising portion prevents water from entering the basement unit from the periphery of the opening.

[0010]

FIG. 1 is a sectional view of an essential part of a basement unit formed by a method according to an embodiment of the present invention described later. Hereinafter, description will be given based on the drawings. The basement unit _CN has a floor (not shown), a ceiling 1 and side walls 3, and the ceiling 1
Is provided with an opening 4, and the opening 4 serves as an entrance which enters and exits through an opening hatch (not shown) of a floor cutout formed in the floor of the ground building. Further, a rising portion having a predetermined width is formed along the periphery of the opening 4 on the outer wall side, and the draining portion 2 is formed. The draining unit 2 are integrally molded with the basement unit C _N.

[0011] After installation in the basement unit C _N construction sites with such a structure, to the ground building is constructed, a long period of time, but a state of being left in the scene, rainwater into the interior basement unit C _N The inside is protected by attaching the packing 8 to the blind lid 9 and covering the opening 4 so as not to enter.

[0012] Since the opening 4 the periphery of the cutwater 2 outside wall is raised structure, water does not enter the basement unit C _N even if water is accumulated in its periphery.

FIG. 2 is a sectional view of an essential part for explaining an embodiment of the present invention. Hereinafter, a method of manufacturing a basement unit C _N of the above structure with reference to the drawings.

First, the entrance / exit forming frame 11 is set in the opening forming portions of the main body forming dies 17a and 17b for forming the main body of the basement unit. This entrance / exit molding frame 11
Has a surface along the side wall of the basement unit opening, and a surface closing the opening and parallel to the ceiling.

Next, in the doorway molding frame 11, the basement unit C _N draining height determined formwork 12 openings for determining the height of the draining portion 2 formed along the opening portion of the outer surface side of the It is set to protrude from the peripheral edge to a dimension shorter than the width of the drainer 2 to be formed by a gap. At this time, it is set at a desired position by the positioning pin 15a so as not to shift forward, backward, left and right. Doorway forming frame 11 and drainage height dimensioning formwork 1
2 means that the spacers 14 are formed along the periphery of the entrance molding frame 11.
a is provided, which determines the height of the draining part 2 and is sealed so that the casting material does not leak when the draining part 2 is formed.

Next, a vacuum chamber mold 13 having a surface perpendicular to the ceiling of the main body forming die 17a and a surface perpendicular to this surface and parallel to the ceiling is placed on the drainage height dimensioning mold 12. ,
The height of the gap is projected from the drainage height dimensioning formwork 12,
In addition, the lower end surface of the vacuum chamber mold 13 perpendicular to the ceiling is set to a position reaching the casting surface while covering the drainage height dimensioning mold 12. Here, the positioning pin 15b is set at a desired position so as not to shift forward, backward, left and right. The space between the drainage height determining mold 12 and the vacuum chamber mold 13 is sealed by a spacer 14b. The vacuum chamber frame 13 set as described above supports a portion where the draining section 2 is to be formed, and also prevents air leakage.
The spacers 14a and 14b used in the present invention are formed by members with rubber packing interposed therebetween.

In the state in which the mold is set in this way, a decompression chamber 19 surrounded by the spacer 14b, the vacuum chamber mold 13 and the drainage height dimensioning mold 12, and having the gap 18 formed therein is formed. Is done. A pipe 20 is provided from a mold of the vacuum chamber mold 13 surrounding the decompression chamber 19, and the pipe is connected to a vacuum pump 21. Therefore, by driving the vacuum pump 21, the decompression chamber 19 is evacuated, and a vacuum state is formed.

With these jigs set, first, a resin concrete 16 is cast as a casting material into the main body forming dies 17a and 17b up to the height of the opening forming frame 11, and then the pressure reducing chamber is formed. 19 is evacuated by a vacuum pump 21, whereby the resin concrete 16 immediately below the decompression chamber 19 is pulled up to the drainage height dimensioning form 12, and by maintaining the state for a predetermined time, the resin concrete 16 is hardened, The drainer 2 is formed. The time required for curing the resin concrete 16 varies depending on the composition of the material, the temperature thereof, and the temperature in the air. In the case of the present example, a drainage portion having a width of 60 mm was formed, but the time required for curing was about 20 minutes.

The basement unit _CN is integrally formed at the same time as the opening formed in the ceiling portion and its rising portion.

[0020]

As described above, according to the method for manufacturing a basement unit of the present invention, the unit to be drained can be easily formed by evacuating the portion where the drain portion is to be formed at the same time as the unit body is cast. Moreover, the cost can be reduced. Further, when such a convex portion is formed, there is an advantage that the size and the like can be freely selected, which is effective.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a basement unit manufactured by a manufacturing method according to an embodiment of the present invention.

FIG. 2 is a sectional view of an essential part for explaining an embodiment of the present invention.

FIG. 3 illustrates a conventional example.

[Description of Signs] 1 ··· Basement unit 2 ··· Drain portion 8 ··· Packing 9 ··· Blind lid 11 ··· Entrance and exit molding frame (opening molding frame) 12 ···・ Draining height dimension determining form (draining height determining form) 13 ・ ・ ・ ・ Vacuum chamber form (water draining width determining form) 14a, 14b ・ ・ ・ ・ Spacer 15a, 15b ・ ・ ・ ・ Positioning pin 16 ···· Resin concrete 17 ··· Main body molding die 18 ··· Gap 19 ··· Decompression chamber 21 ··· Vacuum pump

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) E02D 29/00 E04H 1/02 E04G 21/02 B28B 7/22

Claims (1)

(57) [Claims] 1. An inner frame and an outer surface in contact with an inner surface of a basement unit.
And an outer frame that is in contact with
The main body molding die with the part corresponding to
In the ceiling forming part, the opening of the basement unit
Attach an opening forming frame for forming the opening
The height of the rising part formed along the periphery of
Place the drainage height determining form at the periphery of the opening forming frame.
Provide it in a state where it protrudes upward by a fixed length.
Place the drainage width determination formwork that regulates the width of the rising part
Provided so as to surround the outer periphery of the height determining mold,
Place the casting material in the mold, and determine the drainage height
To evacuate the space formed by the width determining mold
The casting material is guided into the space
After curing the material, form the rising part along the periphery of the opening.
The method of manufacturing the basement unit to be formed.