JP3642997B2 - Waterproof structure of underground outer wall - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a waterproof structure of an underground outer wall by a soil pillar row continuous mountain retaining wall.
[0002]
[Prior art]
When the underground wall of a reinforced concrete building frame is constructed in contact with the underground outer wall of soil column continuous mountain retaining wall, a waterproof layer may be formed between the underground outer wall and the underground wall of the building frame as a waterproof structure .
[0003]
Conventionally, this waterproof layer is formed at the same time as the concrete driving when constructing the underground wall of a reinforced concrete building frame, and a butyl rubber sheet is stretched on the mountain retaining wall.
[0004]
[Problems to be solved by the invention]
However, the butyl rubber sheet is relatively heavy by itself, and if the basement level is high, it is difficult to fix the butyl rubber sheet to the mountain retaining wall. There is a risk of water leakage due to such factors.
[0005]
In addition, butyl rubber, which is the material of the butyl rubber sheet, is mainly composed of natural rubber, so there is a risk of contamination of groundwater after construction, and if it contains components such as hydrogen sulfide, it may touch and deteriorate to impair the water stoppage. There is also.
[0006]
An object of the present invention is to provide a waterproof structure for an underground outer wall that eliminates the disadvantages of the above-described conventional example, has good workability, and ensures and maintains water-stopping properties.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, first, in the case of constructing an underground wall of a building frame in contact with the inside of an underground outer wall by a soil column continuous mountain retaining wall, a steel plate as a core material on the underground outer wall is constructed. A mold separator is attached to the mold steel on the exposed wall, and a waterproof sheet with synthetic resin fibers planted on both sides of the synthetic resin film is laid so that the separator penetrates. The waterproof layer was formed by sealing with an elastic adhesive such as the second, the synthetic resin film was a polyethylene film, the synthetic resin fiber to be planted was polypropylene, and third, the waterproof sheet was underground The gist is to adhere to the outer wall surface with cement paste, and fourthly, to seal the overlapping portions of the waterproof sheets with an elastic adhesive such as modified silicone.
[0008]
According to the first aspect of the present invention, the water-stop sheet in which synthetic resin bristles are planted on both surfaces of the synthetic resin film is light in weight, and has good adhesion to concrete due to the planted synthetic resin fibers. Even if the soil surface of the mountain retaining wall moves due to the behavior of the soil, it can be handled by the elongation of the anchor of the flocked part, and it can also follow the crack of concrete, and it is natural because it is mainly made of synthetic resin Unlike the rubber component, it is rich in acid resistance and alkali resistance.
[0009]
According to the second aspect of the present invention, a material that is optimal in terms of cost and performance is selected as the waterproof sheet.
[0010]
According to the third aspect of the present invention, since the waterproof sheet is lightweight, it can be adhered to the outer wall surface of the basement with mortar or cement paste, and can be reliably laid by bonding.
[0011]
According to the fourth aspect of the present invention, the overlapping portions between the water-stop sheets are sealed with an elastic adhesive such as modified silicone, thereby ensuring the integrity of the water-stop sheets and simplifying the overall water-stop. Can be improved.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail. FIG. 1 is a longitudinal side view showing an embodiment of the waterproof structure of an underground outer wall of the present invention, FIG. 2 is a perspective view of the same, and 1 in the figure is an underground outer wall by a soil column continuous mountain retaining wall.
[0013]
As shown in FIG. 3, the underground outer wall 1 is constructed by an in-situ soil mixing method using a multi-axis auger, and when the original ground is drilled into a single-unit wall, the kneading shaft of the multi-axis auger A mixed liquid corresponding to the purpose such as cement and bentonite is discharged from the tip and mixed with the soil in situ in the soil to form a one-element soil cement wall.
[0014]
The respective elements of the soil cement wall thus constructed are wrapped to form a wall body integrally connected. In the figure, reference numeral 2 denotes H-shaped steel as a core material, which is inserted and disposed before the column cement is hardened.
[0015]
After completion of the wall, the surface of the underground outer wall 1 was cut flat until the flange 2a of the H-shaped steel 2 was exposed along with the root cutting on the building construction area side. In FIG. 1, 12 is mat slab concrete, 13 is a waste disposal, and 14 is water conveyance to Kamaba.
[0016]
In this way, the mold separator 3 is attached to the surface of the flange 2a of the H-shaped steel 2 on the wall surface of the underground outer wall 1.
[0017]
And the waterproofing sheet | seat 4 which planted synthetic tree fiber on both surfaces of the synthetic resin film was laid so that this separator 3 might penetrate, and it was set as the waterproof layer. In this embodiment, the water-stop sheet 4 is also extended between the waste disposal 13 and the mat slab concrete 12.
[0018]
FIG. 4 shows this water-stop sheet 4. As the synthetic resin film constituting the water-stop sheet 4, a vinyl chloride film and a polyvinylidene chloride resin film may be used, but a polyolefin-based polyethylene film 5 and a polypropylene film are useful.
[0019]
The synthetic resin hair fibers to be planted are preferably polyolefin-based polypropylene 6 and polyethylene, but nylon (6), nylon (11), nylon (12), nylon (66), nylon (610) and the like are mainly used. Polyamide, polyethylene terephthalate, polybutylene terephthalate, polyethylene oxybenzoate, poly 1-4 dimethylcyclohexane terephthalate, porpivalolactone, and polyester based on these as main components can be used as long as they are conical-forming polymers. Can be used.
[0020]
Synthetic resin bristles to be planted are cut into fibers to an appropriate length to adjust the pile (short fibers) for flocking and are planted on a synthetic resin film. The pile length is usually 0.3 to 3.0 mm. (Preferably 0.5 to 1.5 mm).
[0021]
The adhesive for adhering the pile of polypropylene 6 to the polyethylene film 5 is a known adhesive that is stable to a treating agent and can strongly bond fibers. As such an adhesive, a thermosetting adhesive that is cured (cross-linked or reticulated) by heating at high temperature and becomes insoluble in hot water, organic solvents, chemicals, and the like is preferable. For example, water-soluble thermosetting resins such as melamine-formaldehyde initial condensate and urea-formaldehyde initial condensate and functional vinyl monomers such as acrylamide, methylolacrylamide, methylenebisacrylamide, glycidyl acrylate, glycidyl methacrylate and alkyl acrylate Examples thereof include a mixed composition of an acrylic acid ester or methacrylic acid ester such as ester, methacrylic acid alkyl ester or 2-hydroxyalkyl acrylate and a copolymer made of acrylic acid or methacrylic acid. In addition, methylolated polyamide, polyurethane having an isocyanate group, and the like can be used, but are not limited to the above. The adhesive is used in the form of a solution or an emulsion.
[0022]
The flocking process is performed by applying a uniform thin film of adhesive to the base fabric and then planting a pile of fine cones using a flocking machine such as an electrostatic flocking machine, and then heat drying to cure the adhesive. Then, the water stop sheet 4 by the flocked product used for this invention is obtained.
[0023]
The water blocking sheet 4 has a hole 4a formed in advance in the separator penetrating portion, the separator 3 is penetrated through the hole 4a, and mortar or cement paste 7 is applied to the wall surface of the underground outer wall 1 in advance. The water-stop sheet 4 is adhered to the wall surface using the mortar or cement paste 7 as an adhesive.
[0024]
Further, an elastic adhesive such as modified silicon 8 is disposed at the end of the hole 4a of the water-stop sheet 4 and at the end as shown in FIG. The end overlapping portion 4 is sealed.
[0025]
As the elastic adhesive, rubber-like elasticity (flexibility) is maintained for a long period of time, and it is excellent in durability. In addition to a modified silicon 8-based adhesive, a polysulfide-modified epoxy resin-based adhesive, a polyurethane resin-based adhesive Agents and silicone rubber adhesives can be used.
[0026]
The elastic adhesive such as the modified silicon 8 can exhibit elasticity following in the elastic adhesive portion when the waterproof sheet 4 is tensioned.
[0027]
After disposing the water stop sheet 4 in this way, bar arrangement is performed, a concrete formwork 11 is assembled using the separator 3, concrete is placed, and the underground wall 10 of the building frame 9 is constructed.
[0028]
【The invention's effect】
As described above, the waterproof structure of the underground outer wall of the present invention forms a waterproof layer with a lightweight waterproof sheet, so that the workability is good and the waterproofing is ensured and maintained well. Since waterproofing can be formed, there is no water leakage, and no double wall is required, so that the underground area can be widely used.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view showing an embodiment of a waterproof structure for an underground outer wall according to the present invention.
FIG. 2 is a perspective view showing an embodiment of a waterproof structure for an underground outer wall according to the present invention.
FIG. 3 is an explanatory diagram of construction of an underground outer wall by a soil pillar row continuous mountain retaining wall.
FIG. 4 is a perspective view of a water-stop sheet used in the present invention.
FIG. 5 is a cross-sectional plan view showing the joining of the end portions of the waterproof sheet.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Basement outer wall 2 ... H-shaped steel 2a ... Flange 3 ... Separator 4 ... Water stop sheet 4a ... Hole 5 ... Polyethylene film 6 ... Polypropylene 7 ... Cement paste 8 ... Modified silicon 9 ... Building frame
10 ... underground wall 11 ... concrete formwork
12 ... Matte slab concrete 13 ... Disposal
14 ... Conveying water to Kamaba

Claims (4)

When the underground wall of the building frame is constructed in contact with the inside of the underground outer wall by the soil pillar row continuous mountain retaining wall, the separator for the formwork is attached to the mold steel at the wall surface where the steel mold as the core material is exposed on the underground outer wall. A waterproof sheet with synthetic resin fibers planted on both sides of the synthetic resin film is laid so that this separator penetrates, and the separator penetration part of the sheet is sealed with an elastic adhesive such as modified silicone to form a waterproof layer Waterproof structure of the underground outer wall characterized by The waterproof structure of an underground outer wall according to claim 1, wherein the synthetic resin film is a polyethylene film, and the synthetic resin fiber to be planted is polypropylene. The waterproof structure of the underground outer wall according to claim 1 or 2, wherein the waterproof sheet is adhered to the outer wall surface of the underground with mortar or cement paste. The waterproof structure of the underground outer wall according to any one of claims 1 to 3, wherein the overlapping portions of the waterproof sheets are sealed with an elastic adhesive such as modified silicon.

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