JPH03271430A - Gutter construction in underground structure and method for gutter construction - Google Patents

Abstract

PURPOSE:To ensure high workability and reduce cost by arranging a corrugated plate for forming the bottom of a gutter passage and another corrugated plate for forming the overhead of the gutter passage on top of each other between a foundation batholith and a concrete slab, with corrugations crossing each other. CONSTITUTION:Bottom corrugated plates 5 and 5 for forming the bottoms of gutter passages 4 and so forth are laid on a foundation batholith 1 and overhead corrugated plates 6 and 6 for forming the overheads of the gutter passages 4 and so forth are laid thereon in such a way that the corrugations of both plates 5 and 6 cross each other. Then, a concrete slab 2 is placed onto the overhead corrugated plates 6 and 6, and gutter passages 4A, 4A and 4B positioned lengthwise and crosswise in a plan view are formed between the bottom corrugated plates 5 and 5, and overhead corrugated plates 6 and 6. A gap between the bottom recess of the bottom corrugated plates 5 and 5, and the top of the foundation batholith 1 should preferably be filled with mortar 7.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a drainage structure in an underground structure such as a basement of a building. , relates to a drainage structure in an underground structure in which drainage passages are formed in a vertical and horizontal arrangement in a plan view, and a method for creating the same.

[Conventional technology]

Conventionally, the following techniques are known.

One of them is the board that holds the concrete slab.
Units for forming drainage passages for concrete and fired products, which are equipped with legs for mounting support on the foundation base, are placed side by side on the foundation base, and a concrete slab is placed on top of these units to form a unit board. This is a technique in which the gap between the section and the foundation base is formed as a drainage passage by arranging it vertically and horizontally in a plan view (for example, Japanese Patent Publication No. 16536/1983).

The other one is a technology in which the unit is made of synthetic resin foam (for example, Publication No. 16537/1983).
.

In both conventional technologies, groundwater that intrudes into the underground structure, such as condensation water generated due to the temperature difference between the inside and outside of the basement, is collected in a drainage passage formed by the unit, and then discharged using a pump or the like. .

[Problem to be solved by the invention]

However, the conventional technology has the following drawbacks.

When using the former conventional technology, the unit forming the drainage passage is made of concrete or fired product, so the unit is heavy (
, difficult to handle. However, if the units are made to be lightweight in order to improve their handling, the units will be small and it will take a lot of effort to lay them out on the foundation. In short, when using the former conventional technology, the workability was poor, resulting in a prolonged construction period and an increase in construction costs.

On the other hand, when using the latter conventional technology, the unit is made of synthetic resin foam, so it can be made lightweight, but the unit needs to be manufactured by injection molding, which involves high mold costs, so the unit is made of synthetic resin foam. Cost increases are inevitable.

The object of the present invention is to eliminate the above-mentioned drawbacks.

[Means to solve the problem]

The characteristic structure of the drainage structure in the underground structure according to the present invention is 1. To form the drainage passage, a corrugated plate for the bottom to form the bottom of the drainage passage and a corrugated plate for the ceiling to form the ceiling of the drainage passage are placed between the foundation base and the concrete slab. , the grooves are placed one above the other in a manner that they intersect with each other.

The feature of the method for producing a drainage structure in an underground structure according to the present invention is that a corrugated bottom plate for forming the bottom of a drainage passage is laid on the foundation base, and on top of the corrugated plate for the bottom, the drainage To form the ceiling of the passage, a corrugated ceiling board is laid in such a way that its grooves intersect with the grooves of the bottom corrugated board, and a concrete slab is poured on top of the corrugated board for the ceiling. , the drain passages are formed between the bottom corrugated plate and the ceiling corrugated plate, arranged vertically and horizontally in a plan view.

It is preferable that mortar is filled in a gap between the recess on the lower surface of the bottom corrugated plate and the upper surface of the foundation bottom plate, and after placing the mortar on the foundation surface plate,
It is preferable to lay the corrugated plate for the bottom before this mortar hardens.

[For production]

According to the drainage structure having the characteristic configuration described above, the corrugated plates for the bottom and the corrugated plates for the ceiling are stacked vertically with their grooves intersecting. The grooves on the top surface of the corrugated board are not filled with the corrugated board for the ceiling, and the grooves on the bottom surface of the corrugated board for the ceiling are not filled with the corrugated board for the bottom. As a result, vertical and horizontal drainage passages can be formed between the bottom corrugated board and the ceiling corrugated board by the grooves on the upper surface of the bottom corrugated board and the grooves on the lower surface of the ceiling corrugated board.

If mortar is filled in the gap between the recess on the lower surface of the corrugated bottom plate and the foundation bottom plate, that is, in the groove on the lower surface of the corrugated bottom plate, then the corrugated plate for the ceiling is filled with mortar. The load acting on the corrugated bottom plate can be transferred to the foundation bottom plate by the mortar filled in.
The waveform of the bottom corrugated plate does not collapse due to the load, and the grooves on the top surface of the bottom corrugated plate can be guaranteed.

According to the creation method having the above characteristics, the drainage passage having the above-described structure can be created at the boundary between the foundation base and the concrete slab by simply laying the corrugated plates.

If a work method is adopted in which a corrugated board for the bottom is laid down after mortar has been cast on the foundation base and before the mortar has hardened, the corrugated board for the bottom is pressed downward. By adjusting the thickness of the mortar between the corrugated board for the bottom and the foundation base, it is possible to not only adjust the slope of the corrugated board for the bottom, that is, the slope of the drainage passage, but also to adjust the slope of the corrugated board for the bottom and the bottom surface of the corrugated board for the bottom. The mortar in the grooves can be filled at the same time.

Furthermore, the drainage passage is formed using a corrugated board, and since ready-made corrugated boards made of plastic or slate are often used as construction materials, the corrugated board can be obtained at low cost. In addition, corrugated plates can be stacked with the grooves in the same direction so that multiple items can be stacked together without adding bulk, making it easy to transport to the site due to the fact that corrugated plates are lightweight. can be done.

〔Effect of the invention〕

Therefore, the present invention makes it possible to create drainage passages arranged vertically and horizontally at low cost and with ease of construction.

〔Example〕

Examples of the present invention are shown below.

As shown in Figure 2, the underground structure forming the basement (A) is built on a concrete foundation base (1).
A) A concrete slab (2) containing mesh reinforcement (2a) is poured to form the floor.

At the boundary between the foundation base (1) and the concrete slab (2), water such as condensation water that has flowed down to the top surface of the foundation base (1) along the inner surface of the underground wall (3) is guided to a discharge part. Drainage passages (4) are formed in an arrangement arranged vertically and horizontally in a plan view.

The means for forming the drainage passage (4) is a foundation bottom plate (1).
between the concrete slab (2) and the drainage passage (4).
A bottom corrugated plate (5) to form the bottom of the drain passage (
A corrugated board for the ceiling (6) for forming the ceiling of 4) is placed one above the other with their grooves perpendicular to each other, and the corrugated board for the bottom (5) and the corrugated board for the ceiling are interposed. Board (6
) is used as a drainage passageway (4). Specifically, the grooves on the upper surface of the corrugated plate for the bottom (5) form one vertical and horizontal passage portion (4A) of the drainage passage (4), and the grooves on the lower surface of the corrugated plate for the ceiling (6) form the vertical and horizontal passage portions (4A). , to form the other vertical and horizontal passage portions (4B).

The bottom corrugated plate (5) and the ceiling corrugated plate (6) each have unit size units (5A) and (6A),
It is constructed by arranging adjacent items so that their ends overlap vertically. The units (5A), (6A
) are made of plastic such as vinyl chloride, polyethylene, polypropylene, etc., or made of slate, and each has a size of 900 mm x 1800 mm.

1200mmX1800mm, 900mmX240
0mm, 1000mmX1000mm, 1000mm
A corrugated board, which is one of the general construction materials, can be used in a size that can be carried by one worker, such as 20.00 mm.

In addition, the gap between the recess on the lower surface of the corrugated bottom plate (5) and the foundation bottom plate (1), that is, the groove on the lower surface of the corrugated bottom plate (5), is filled with mortar (7). There is. In other words, the bottom corrugated plate (5) is passed through the ceiling corrugated plate (6).
The load acting on the foundation base (1) through the mortar (7)
This is to prevent the bottom corrugated plate (5) from collapsing.

Furthermore, the shape of the corrugated plate for the bottom (5) and the corrugated plate for the ceiling (6) may be a sine curve as shown in FIG. 1, or an angular shape as shown in FIG. It may have a wave shape. Of course, the bottom corrugated plate (5) unit (5A) and the ceiling corrugated plate (6) unit (6A) may be the same or different.

In the figure, (8) indicates a gap (
9) is an inner wall made of concrete blocks provided in a state of forming, and (10) is a beam. Also, underground wall (3)
The inner surface of the ceiling slab (11) and the lower surface of the periphery of the ceiling slab (11) are finished with mortar (12).

4 The creation method is shown below.

First, mortar (7) is placed on the foundation base (1).

Before the mortar (7) hardens, the unit (5A) is juxtaposed on the cast mortar (7),
Adjust the slope of the unit (5A) by pressing down on each part of each unit (5A) as appropriate.
) Push the mortar into the groove on the bottom surface and insert the corrugated plate for the bottom (5
).

Then, place the unit (6A) on the bottom corrugated plate (5).
A corrugated board (6) for the ceiling is laid side by side.

Concrete slab (2) on top of corrugated ceiling board (6)
to be poured.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view of the main part, FIG. 2 is a longitudinal sectional side view of the main part, and FIG. 3 is a longitudinal sectional front view of the main part.
Fig. 4 is a perspective view of the main part, Fig. 5 is a front view of the main part,
FIG. 6 is a sectional view showing another embodiment. (1)...Foundation base, (2)...Concrete slab, (4)...Drainage passage, (5)
, (6)... Corrugated board, (7)... Mortar.

Claims (1)

[Claims] 1. An underground structure in which drainage passages (4) are formed at the boundary between the foundation base (1) and the concrete slab (2) cast thereon, arranged vertically and horizontally in a plan view. A drainage structure in a structure, in which the drainage passageway (4) is formed, between a foundation base (1) and a concrete slab (2), for forming the bottom of the drainage passageway (4). corrugated plate (
5) and a corrugated ceiling plate (6) for forming the ceiling of the drainage passageway (4), which are stacked one on top of the other with their grooves intersecting each other. structure. 2. The drainage structure for an underground structure according to claim 1, wherein a gap between the recess on the lower surface of the bottom corrugated plate (5) and the upper surface of the foundation bottom plate (1) is filled with mortar (7). 3. Lay the bottom corrugated plate (5) to form the bottom of the drainage passage (4) on the foundation base (1), and lay the drainage passage (5) on top of the bottom corrugated plate (5). The corrugated board (6) for the ceiling is used to form the ceiling of (4), and the grooves of it are connected to the corrugated board (6) for the bottom.
5), place the concrete slab (2) on top of the corrugated plate (6) for the ceiling, and place the corrugated plate (5) for the bottom on top of the corrugated plate (6) for the ceiling. ) A method for creating a drainage structure in an underground structure in which drainage passages (4) are formed in a vertical and horizontal arrangement in a plan view. 4. The underground according to claim 3, wherein after pouring the mortar (7) on the foundation bottom plate (1), and before the mortar (7) hardens, the corrugated plate (5) for the bottom is laid. How to create drainage structures in structures.