JPH05280064A - Execution of underground double wall - Google Patents

Abstract

PURPOSE:To shorten the construction period by mounting a panel in frames respectively fitted on the upper part of a weir body which is spaced from the inside of a wall body and fixed to a floor slab face, and on a ceiling slab opposite to the weir body, and elastically engaging the panel with beads. CONSTITUTION:Frames 21 are fitted on the upper part of a weir body 5 provided on the upper face of a floor slab oppositely to a ceiling slab by means of vis 24. Next, a panel 22 is set so that its upper and lower edges come contact with the panel receives of the frames. Next, beads 30 are elastically engaged with the frames 21 on the upper and lower edge parts of the panel 22, and the panel 22 is sandwitched between the lip parts of the frames 21 and the lip parts of the beads 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing an underground double wall which can easily make a living environment in an underground structure comfortable.

In recent years, land prices in urban areas have skyrocketed, buildings have risen in height, and the number of floors in basements has increased to increase the floor area. However, private residences are commonly equipped with an underground garage or a basement. As shown in FIG. 11, since the outside of the reinforced concrete wall body (hereinafter referred to as a wall body) 2 forming the basement 1 is in direct contact with the soil 3, the basement has a slight crack in the wall body 2 or concrete If there is a defective portion in the mortar filling of the joint portion and the wooden concrete hole, the water in the soil 3 flows into the room through cracks, defective portions of the wooden concrete hole, etc., but especially when it rains, the amount increases.

Further, since the wall body 2 has almost the same temperature throughout the year as the soil 3 on the outside, when the temperature in the basement 1 rises, the wall body 2 comes in contact with the surface of the wall body 2 to be below the dew point, Condensation is formed on the inner wall surface 2a of the body 2 and flows down to the floor slab 4. Conventionally, these water is generated by the floor slab 4 near the wall 2.
The weir body 5 is provided along the wall body 2 to form the drainage groove 6, and the drainage groove 6 is introduced into the water storage tank 7 provided in the lowermost layer of the underground structure through the water drainage hole 8 by a pump (not shown), It is pumped to the ground and released.

Further, in order to remove the moisture in the basement 1 and improve the living environment, the inner surface of the wall body 2 of reinforced concrete (RC) which is normally in contact with the outer soil 3 as shown in FIG. A moisture permeable material such as a concrete block (hereinafter referred to as CB) is stacked at a distance from 2a to form the inner wall 9.

In this state, the surface 9a of the inner wall 9 on the room 10 side does not condense, and the moisture in the room 10 passes through the inner wall 9 and condenses on the surface of the wall 2. The condensed water and the water that enters from the soil 3 through the wall 2 are the inner surface 2 a and the inner wall 9 of the wall 2.
The water is collected in the drainage groove 6 provided at the bottom of the space and introduced into the water storage tank 7 through the water drain hole 8, and the room formed by the inner wall 9 is kept in a comfortable environment with little humidity.

By the way, the inner wall 9 on which the CB is piled up is filled with mortar in joints, and the height of the piled up is JAS.
It must be within 1.6m according to the regulations of "cavity concrete block construction" in S7. 1.6 like this
The reason why the height of m is set as the upper limit is that the accuracy of the block stacking is likely to be deteriorated and the curing time of the joint mortar cannot be sufficiently taken.

[0007] In case of further stacking and raising it,
Reinforced concrete girders 11 must be installed on the way to connect and reinforce the wall 2, which requires skilled manpower and construction period. Also, for CB assembly work, a considerable amount of materials and equipment must be installed in a small basement. There were drawbacks such as having to carry in and out.

Therefore, a hollow extruded plate material, which is produced by extrusion molding of a cement-based material and is cured in an autoclave and provided with a large number of parallel through holes in the extrusion direction, has come to be used.

This hollow extruded plate material has dense crystals as compared with CB, has high strength, has moisture permeability, and has good waterproof property. The amount of CB used as a material for heavy walls is increasing.

[0010]

However, since the above hollow extruded plate material is thin and has no self-standing property, it tends to be damaged during loading and construction. Furthermore, when installing this, a method of projecting mounting members such as brackets from the concrete frame of the wall, floor, and ceiling is applied, but at this time, if work such as making holes in the concrete frame causes water leakage May be. Further, as in the case of CB, it requires not only skilled labor, but the construction period cannot be shortened drastically, and since it is a cement product like CB, it has the disadvantage of poor design.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an underground double wall construction method which is easy to install, does not require a skilled person, has a short construction period, and has a high designability. And

[0012]

In order to achieve the above-mentioned object, in a method of constructing an underground double wall provided close to the inner surface of a wall forming an underground structure, a predetermined space is provided between the inner surface and the inner surface. The upper and lower edges of metal, plastic, or wooden panels on the upper part of the weir body that forms the drainage channel fixed to the floor slab surface and the frame that is attached to the ceiling slab facing the weir body. However, the elastic engagement by the pushing edge was used as a means for solving the problem.

The weir body may be a channel-shaped plastic molded body filled with mortar as described in Japanese Patent Application No. 3-78425. Further, the weir body and the double-wall mounting frame may be integrated.

The above panel is preferably provided with ventilation slits at the upper and lower ends, and when a metal panel is used, a heat load for heating the panel is applied to heat the panel, or the panel is heated. A heat insulating sheet may be attached to the surface of the drainage groove side to prevent condensation.

Further, the water stored in the drain is connected to the drain by a refractory pipe, the water in the drain is introduced into the reservoir, and this water is discharged to the ground by using a pump. . In this case, even if the underground is multi-layered, by connecting the drainage ditch of the basement on the top floor and the water tank with an integrated fireproof pipe, by providing a branch in this pipe and connecting it to the drain ditch of another floor, Water can be treated like a single-layer basement.

[0016]

Since the method of constructing an underground double wall according to the present invention has the above-mentioned structure, the panel is lightweight and easy to handle without damage, and if the upper and lower edges are elastically engaged through the frame and the pushing edge. Since it is good, the construction time is shortened and the worker does not need a high degree of skill.

In the present invention, a metal panel, a plastic panel, or a wooden panel is used because it is lightweight, easy to handle, durable and excellent in durability.

Examples of the metal panel include steel, stainless steel, aluminum and the like, examples of the plastic panel include vinyl chloride, acrylic, polyester, polycarbonate, melamine resin and the like, and examples of the wooden panel include lauan plywood. , Wood plywood, structural plywood, natural wood decorative plywood, printed plywood, overlay plywood and the like.

These materials are strong, lightweight and
Since it is required to be economically excellent, the material thickness is preferably 0.5 to 10 mm, particularly 0.8 mm to 5.0 mm. The size of the panel is not particularly limited, but it is suitable that the width is 1 m and the length is 3 m in view of the floor height of the structure used. The panel shape may be a flat plate, but in order to improve design and rigidity, the panel surface may be provided with irregularities or a corrugated shape.

Next, the procedure of the method for constructing a double wall using the above panel will be described. 1 to 4 show an example of a method for constructing an underground double wall according to the present invention and members used for the method, and reference numeral 21 in the drawings denotes an upper portion of a weir body 5 provided on the surface of the floor slab 4 and a ceiling slab. Panel 2 fixed to the surface
It is a frame for attaching the upper and lower edges of 2.

The frame 21 is fixed by directly adhering it to the dam body with an adhesive or the like without using the fixing screw 24 which is inserted through the screw hole 23 or the screw. The frame 21
In consideration of cost and workability, it is preferable that light metal such as aluminum is continuously extruded.

Further, the shape thereof is almost the same as that of the light weight grooved steel, there is a flat portion 25 for fixing to the weir body 5 and the ceiling slab, and further, there is a rising portion which stands upright on both side portions thereof. On the other hand, since one of them facilitates mounting of the panel 22, the rising height of the rising portion 26 is low, and
Is set high to support the panel 22 from behind.

Further, the upper end portion of the rising portion 27 is provided with a lip portion 28 for obtaining an elastic force for pressing and fixing the panel. The frames 21 and 21 are attached to the weir body 5.
The panel 22 is attached so as to face the upper and ceiling slabs, and is set so that the upper and lower edges of the panel 22 come into contact with the panel receiver 29.

Next, the frame 2 at the upper and lower ends of the panel 22
The push edge 30 is elastically engaged with the plate 1, and the panel 22 is sandwiched between the lip portion 28 of the frame and the lip portion 31 of the push edge 30 to complete the construction. The push edge 30 is also formed in the same manner as the frame 21, and is engaged with the engaging gap 32 provided in the lower portion of the frame 21 by utilizing the elasticity of the material.

In FIG. 3, the frame 21 and the weir body 5 are separate bodies, but as shown in FIG. 4, the portion 33 of the weir body 5 that is filled with cement mortar and the frame 21 can be integrated. ..

Assuming that the panel 22 engaged with the weir body 5 through the frame 21 causes dew condensation on the surface and flows to the frame 21, as shown in FIGS. 5, 6 and 7. In addition, an outer shell (outer shell) 4 for filling the cement mortar of the weir body having the flow gradient 41 and the drain hole 42 on the drain groove 6 side
The frame 44 integrated with the frame 3 is used, and the lower edge of the panel 22 is elastically engaged with the flat portion 45 by the pushing edge 47 having the drain hole 46.

Further, in order to improve the flow of the drainage groove 6, FIG.
As shown in, the flow gradient 4 that makes the drainage hole 8 portion the lowest
8 is preferably formed. The flow gradient 48 may mount a molded product having a triangular cross section.

A drainage hole 8 is provided in the drainage groove 6 to remove dew condensation water and intrusion water. However, since this drainage hole penetrates the horizontal section, consideration for disaster prevention is required. For this purpose, a double wall is generally used as a fireproof structure to completely shut off the interior 10 side and the drain 6 side. However, since the panel 22 used in the present invention has no fire resistance, the panel 22 is subjected to the following treatments to satisfy the predetermined conditions.

[0029] It is an iron pipe that is allowed to penetrate the section defined by Article 112 of the Enforcement Ordinance of the Building Standards Act, or the Enforcement Ordinance 12 of the same.
This is a method of providing a drain hole by using a fire-resistant double-layer pipe or the like, which is recognized as having the same or higher effect as that of the provisions of Article 9-2-2-7.

For example, when the basement has a plurality of floors, as shown in FIG. 9, the drainage ditch 6 of the basement 51 on the uppermost basement floor.
And the water storage groove 7 in the lowermost layer of the underground structure, one fireproof pipe 5
By providing the branch pipes 53 that communicate with each other by 2 and allow the water in the drains of the other floors to respectively flow in, it is possible to treat the water generated in each basement floor without violating the above regulation.

Therefore, the panel 22 used in the present invention does not need to have fire resistance, and for example, as shown in FIG.
It is also possible to make it easier for the humidity of the above to move to the drain groove 6 side and to even out the humidity inside and outside the panel to prevent dew condensation on the panel.

When a metal panel is used, a heat load can be applied to it to prevent dew condensation on the panel.

Further, in case of dew condensation on the side of the panel in the room 10, it is also effective to attach a heat insulating material such as foam polystyrene, polyurethane foam or glass cotton to the opposite surface.

[0034]

EXAMPLES The present invention will be described in detail with reference to Examples and Comparative Examples. The basement constructed in each of the examples and comparative examples has a floor height of 3000 mm, a width of 15000 mm, and a depth of 10.
At 000 mm, the construction surface used one span of 4500 mm in the width direction.

Example 1 As a material used, a double wall panel is an aluminum keystone plate 1 mmT × 2920 mmH × 1200 mmW.
(Manufactured by Sky Aluminum Co., Ltd.), the frame was an aluminum extrusion molded product.

First, the frame is screwed to the upper part of the weir body and the ceiling slab surface formed by the conventional method,
The upper and lower edges of the panel were set at predetermined positions, and the pushing edge was elastically engaged with the frame on which the panel was set to complete the construction for one span.

Example 2 A weir body (70 mmH × 50 mmW × 4500 mmL) in which the inner space of a channel type plastic molded body is filled with cement mortar at a distance of 100 mm from the wall body is a short set (Showa Denko KK). The same as Example 1 except that the method of Japanese Patent Application No. 3-78425 is used to fix the floor slab.

Comparative Example 1 Cement-based hollow extruded plate material (15 mmT × 30)
3 mm W. 2500mmL), lightweight grooved steel (C channel)
A hot-dip galvanized product was used as, and a hot-dip galvanized product was used as the other type steel (angle).

Using the above materials, firstly a hole is made in the concrete body surface to embed a special plug, and light groove groove steel is attached to the embedded plug via a threaded rod of a predetermined length, and then to the columns on both sides of one span. Was attached with anchor bolts to form a base on which the hollow extruded plate material was attached as a panel.

A hollow extruded plate material cut into a predetermined length is stretched from the bottom to the above base in order from the bottom by using a sealing screw, and a sealing material is attached to the hollow extruded plate materials, or to the projections of the pillars and the ceiling slab. Filling was completed and construction of one span was completed.

Comparative Example 2 Double walls were formed by a conventional method using CB.

Table 1 collectively shows the number of people and the time required for the construction of Examples 1 and 2 and Comparative Examples 1 and 2.

[0043]

[Table 1] However, the time for defective water such as inflow water, junkers, and joints, pretreatment of defective parts, material loading, and residual material treatment was excluded.

As is clear from Table 1, the method of the present invention is
Compared with the case of using a conventional concrete-based CB or hollow extruded plate material, the construction period is significantly shortened. Further, it can be further shortened by using the method of Japanese Patent Application No. 3-78425 filed by the present inventors. Furthermore, the construction method of the present invention makes it easy to carry in materials before construction, and the remaining material after construction is extremely small.

[0045]

As described above, the method for constructing an underground double wall according to the present invention has the following effects as compared with the method using cement-based CB or hollow extruded plate material. Since the thin thin panel is used, it is extremely easy to handle, and the frame and the pushing edge can be set with the touch panel at one touch, which significantly shortens the construction period. In addition, the space available for business is large. Furthermore, if a weir body with an integrated mounting frame is used, the construction period will be further shortened. Water treatment is further facilitated by using a weir body provided with a water flow gradient. As a dew condensation prevention method, a panel provided with a ventilation slit, a panel provided with a heat insulating material, or a method of applying a heat load to the back surface of the panel with a heater or the like can be used to prevent dew condensation. The panel surface can be made beautiful and secondary processing of the appearance can be omitted. Even an unskilled person can perform construction, and maintenance is easy.

[Brief description of drawings]

FIG. 1 is a perspective view of a frame for mounting a panel.

FIG. 2 is a perspective view showing an example of a pushing edge.

FIG. 3 is a cross-sectional view showing a state in which the double wall of the present invention is mounted on a conventional weir body.

FIG. 4 is a cross-sectional view showing a state in which a weir body and a frame are integrated to set a panel, and a drain is provided with a flow gradient.

FIG. 5 is a perspective view of a push edge provided with a water drainage hole in a horizontal portion.

FIG. 6 is a cross-sectional view showing a state in which the weir body and the frame are integrally molded to form a flow gradient flowing in the drain groove and the flow gradient is provided in the drain groove.

FIG. 7 is a perspective view of a weir molding with a frame.

8 is a view taken along the line VIII-VIII of FIG.

FIG. 9 is a cross-sectional view of an underground double layer using a refractory pipe in which partitioning is recognized in a drainage hole.

FIG. 10 is a perspective view of a panel with slits.

FIG. 11 is a partial vertical cross-sectional view of a general basement.

FIG. 12 is a vertical cross-sectional view of a general underground double wall.

[Explanation of symbols]

1 Basement 2 Wall 2a Inner Side 3 Soil 4 Floor Slab 5 Weir 6 Drainage 7 Water Tank 8 Drainage Hole 9 Inner Wall 9a Indoor Side 10 Indoor 11 11 Girder 21 Frame 22 Panel 23 Screw Hole 24 Screw 25 Plane 26 Rising part 27 Rising part 28 Lip part 29 Panel receiving 30 Push edge 31 Lip part 32 Engagement gap 33 Part for filling cement mortar of weir molding 41 Flow gradient 42 Drain hole 43 Putting cement mortar of weir molding Outer shell (outer shell) 44 Frame 45 Flat portion 46 Drain hole 47 Pushing edge 48 Flow gradient 51 Basement uppermost floor 52 Fireproof pipe 53 Branch pipe 54 Vent slit

Front Page Continuation (72) Inventor Kozo Watanabe 5-14-3 Nishi-nippori, Arakawa-ku, Tokyo Within Showa Aluminum Techno Co., Ltd.

Claims (7)

[Claims] 1. A method of constructing an underground double wall provided in the vicinity of an inner surface of a wall forming an underground structure, wherein a drainage groove fixed to the floor slab surface is formed at a predetermined distance from the inner surface. The upper and lower edges of a metal, plastic, or wooden panel are inserted into the frames attached to the upper portion of the weir body and the ceiling slab facing the weir body, respectively, and elastically engaged by the pushing edge. Construction method of underground double wall. 2. The method for constructing an underground double wall according to claim 1, wherein the weir body is a weir body having a channel-shaped plastic molded body filled with mortar. 3. The method for constructing an underground double wall according to claim 1, wherein the weir and the double wall mounting frame are integrated. 4. The panel according to claim 1, wherein a panel provided between the upper portion of the weir body and the ceiling slab is provided with ventilation slits at the upper end portion and the lower end portion thereof. Construction method of underground double wall. 5. The method for constructing an underground double wall according to claim 1, wherein a metal panel subjected to a heat load is used as the panel. 6. The method for constructing an underground double wall according to any one of claims 1, 2, 3 and 4, wherein a panel having a heat insulating sheet attached to the drain groove side surface is used as the panel. 7. In an underground structure formed on a plurality of floors, a refractory pipe is connected between the drainage ditch on the uppermost floor of the basement and the water storage tank of the lowermost layer, and the water of the drainage ditch of each floor is connected to this fireproof pipe. 4. A branch for inflow is provided.
The method for constructing an underground double wall according to any one of 4, 5, and 6.