KR101976087B1 - Earth-pressure resistance type horizontal drain board and construction method using the horizontal drain board - Google Patents

Abstract

The objective of the present invention is to provide a horizontal drain member capable of increasing drain efficiency. According to the present invention, a plurality of flow paths (16) are formed by a cross section of a flow path gradually increased from the center of a core (10) toward a side part or are formed by alternately arranging a flow path with a relatively small cross-section and a flow path with a relatively large cross-section. The core (10) comprises an upper plate (11), a lower plate (13), an inclined plate (13), an inner plate (14), and an outer plate (15).

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a horizontal drainage material,

TECHNICAL FIELD The present invention relates to a horizontal drainage material for improving soft ground by draining water contained in a ground, and a construction method using the same.

In the case of soft ground with high water content, first of all, groundwater is discharged by submerging the ground so that the shear strength of the foundation ground is increased and then foundation work is carried out.

In the construction of such soft ground, it is possible to discharge the groundwater in various ways. Generally, sand or crushed stone is laid on the ground layer as a drainage material, and the groundwater is taken out of the ground layer by embedding it.

Recently, in order to minimize environmental damage due to the extraction of crushed stone or sand, we use wide horizontal drainage material and connect it directly with vertical drainage material to discharge groundwater more easily.

FIG. 1 shows a conventional drain board. The conventional drain board has an upper surface 4a and a lower surface 4b alternately arranged and a plurality of partition walls 5 are formed on the upper surface 4a and the lower surface 4b And a filter material (2) installed to surround the core (3) and the outer surface of the core (3).

The conventional drain board shown in Fig. 1 is disadvantageous in that the drainage path is alternately formed up and down, and the area (shaded area) of the drainage water through which the ground water drained by the vertical drainage material 7 flows is small as shown in Fig. The conventional horizontal drainage 6 shown in Fig. 3 also has a disadvantage in that the area of the drainage passage (shaded area) is small. If the area of the actual drainage channel is small and the area of the entire drainage channel is designed, the delay of the discharge of the groundwater may occur, thereby increasing the actual air.

After the horizontal drainage is installed, the embankment layer is formed thereon and the groundwater is discharged by the pressure of the upper layer of the embankment layer. The pressure of the embankment layer causes the deformation of the conventional horizontal drainage material, .

In order to prevent deformation of the horizontal drainage material, the rigidity of the horizontal drainage material core must be increased. If the rigidity of the whole core is increased, the manufacturing cost of the core is increased. To increase the rigidity of the core, So that the manufacturing cost is increased. On the other hand, there is a problem that the channel area becomes smaller as the thickness of the member becomes thicker.

Korean Patent Registration No. 10-1659608

In order to solve the problems of the conventional art as described above, in the present invention, it is possible to efficiently resist even the high pressure of the embankment layer while using a small amount of material, to reduce deformation and to enlarge the channel area, And an object of the present invention is to provide a horizontal drainage material which can increase drainage efficiency by using an area.

Another object of the present invention is to provide a method of constructing a soft ground using the above-mentioned horizontal drainage material.

In the present invention, the core (10); And a filter (20) surrounding the core (10), wherein the core (10) is provided with a plurality of channels (16) in the horizontal drainage.

The plurality of flow paths 16 may be formed so as to have a larger sectional area from the center to the side of the core 10. The plurality of flow paths 16 may have a relatively small cross- .

The core 10 includes an upper plate 11, a lower plate 12, a swash plate 13, an inner plate 14 and an outer plate 15, 14 and two outer plates 15 are provided on the inner plate 14 and the outer plate 15 and the upper plate 11 is provided with three or more sloping plates 13, And a space surrounded by the upper plate 11, the lower plate 12, the swash plate 13, the inner plate 14 and the outer plate 15 and between the upper plate 11 and the lower plate 11, The space enclosed by the inner plate 12, the swash plate 13, and the inner plate 14 becomes the flow path 16.

The angle between the outer plate (15) and the lower plate (12) is not less than 90 degrees and less than 180 degrees.

The top plate 11 is provided with a top plate discharge hole 17 and the swash plate 13 is provided with a swash plate discharge hole 18.

The inner plate (14) is provided with an inner plate discharge hole (19).

The swash plate discharge hole 18 and the inner plate discharge hole 19 are communicated with each other.

The upper plate 11 has a flat shape or a convex shape toward the center.

A) installing a reinforcing mat (200) on the surface of a soft ground, securing it on the ground, laying the gravel (201) to enter equipment; b) installing a vertical drainage material (7) on the reinforcing mat (200) and the gravel (201) laid on in step a); c) disposing the horizontal drainage material 100; d) connecting the vertical drainage material (7) and the horizontal drainage material (100).

After step d), e) forming an embankment layer 300 on the horizontal drainage material.

The horizontal drainage and soft ground construction method of the present invention has the following effects.

First, in the horizontal drainage of the present invention, the stiffness of the core is increased in the portion where the pressure of the embankment layer greatly acts, the stiffness of the core is decreased in the portion where the pressure is small, So that the flow path is not clogged.

Second, the horizontal drainage material according to the present invention is characterized in that the core is formed of a plurality of polygons, the polygons are formed by sharing the inner plate with the adjacent polygons, and the drainage holes are formed by the shared inner plate, Drainage can be carried out through other adjacent flow paths, so that the flooding effect and drainage performance are high.

Thirdly, when the earth pressure dispersion type core is used, since the portion having high rigidity is disposed in the middle of the core, the pressure at the upper portion is efficiently dispersed and supported, and portions having large flow path area are disposed between the portions having high rigidity It is possible to secure efficient drainage performance in addition to efficient earth pressure dispersion.

Fourthly, in the case where the swash plate drainage hole and the inner plate drainage hole are formed to communicate with each other, it is possible to form all the drainage holes required in a single process, so that it is easy and quick to manufacture and the manufacturing cost is reduced, So that the structure can be easily structured to flow into the flow path, and flow can be made between the adjacent flow paths.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view of a conventional drain board.
Figs. 2 and 3 show the conventional horizontal drainage channel cross-sectional area.
4 is a perspective view of the horizontal drainage material of the present invention.
5 is a cross-sectional view of the flow path of the horizontal drainage material of the present invention.
Fig. 6 is an enlarged view of Fig. 4A.
7 is a cross-sectional view of one embodiment of the core of the present invention.
8 is a cross-sectional view of another embodiment of the core of the present invention.
9 is a cross-sectional view of still another embodiment of the core of the present invention.
Figs. 10, 11, and 12 are enlarged views of Fig. 4A.
13 to 17 show the process of the soft ground construction method of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification. Throughout the specification, when an element is referred to as " comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The horizontal drainage 100 of the present invention will be described first, and then the method of constructing a soft ground using the horizontal drainage 100 will be described.

The horizontal drainage 100 of the present invention includes a core 10 and a filter 20 surrounding the core 10 and a plurality of channels 16 are formed in the core 10, .

The plurality of flow paths 16 are formed by the detailed structures constituting the core 10, and detailed configurations are shown in FIGS.

10 to 12, the core 10 includes an upper plate 11, a lower plate 12, a swash plate 13, an inner plate 14, and an outer plate 15.

A bottom plate 12 forming a bottom surface of the horizontal drainage material is provided and two or more inner plates 14 and two outer plates 15 are provided on the bottom plate and the inner plate 14 and the outer plate 15, the swash plate 13 is integrally formed on the upper portion of the swash plate 13, and the upper plate 11 is provided integrally with the swash plate 13.

The upper plate 11 and the lower plate 12 may be parallel to each other.

The thickness of the inner plate 14 may be thicker than the thickness of the upper plate 11, the lower plate 12, the swash plate 13, and the outer plate 15, since the inner plate 14 must support the earth pressure .

The flow path 16 includes a space surrounded by the upper plate 11, the lower plate 12, the swash plate 13, the inner plate 14 and the outer plate 15, and a space surrounded by the upper plate 11, the lower plate 12, The swash plate 13, and the inner plate 14. As shown in Fig. As shown in Figs. 10 and 11, the flow path may be hexagonal.

The upper plate 11 is provided with a top plate discharge hole 17 (Figs. 10 and 11), and the swash plate 13 is provided with a swash plate discharge hole 18 do.

The inner plate 14 may be provided with an inner plate drainage hole 19, but it may not have an inner plate drainage hole depending on the ground condition or the core specification. Although the outer plate discharge holes formed in the outer plate are not shown in the drawing, the outer plate discharge holes may be formed in the outer plate, if necessary, and the lower plate discharge holes may be formed in the lower plate.

In order to make the manufacturing process efficient and improve the drainage performance, the inner plate drainage hole 18 and the inner plate drainage hole 19 may be formed to communicate with each other (see FIGS. 11 and 12).

If the inclined plate discharging hole 18 and the inner plate discharging hole 19 are formed so as to communicate with each other, the inclined plate discharging hole 18 and the inner plate discharging hole 19 can be formed simultaneously in one step, The time can be shortened and the drainage effect can be increased since the vertical drainage and the horizontal drainage can be performed simultaneously by the communicated drainage hole.

The shape of the upper plate 11 may be planar or may have a convex shape toward the center as shown in FIG.

When the shape of the upper plate is made convex as shown in Fig. 12, drainage from the upper plate to the swash plate and the drain can be smoothly performed, and the bending stiffness in the longitudinal direction of the core is increased.

As shown in FIG. 6, the horizontal drainage core of the present invention can form a honeycomb structure having a cross-sectional structure close to a cube so that the load on the upper portion can be easily dispersed to the left and right. Since the arch structure is formed by the outer plate (outer plate), the load supporting structure by the arching effect can be obtained.

Accordingly, as shown in FIG. 5, the horizontal drainage material of the present invention can provide a horizontal drainage structure that does not cause deformation and sagging due to the above-described structure, while securing a channel area (shade portion) greatly increased as compared with the conventional horizontal drainage material .

The plate formed at the outermost portion of the core serves as the outer plate 15. The outer plate 15 may be inclined as shown in FIG. 7, or may have a shape orthogonal to the lower plate as shown in FIG. 8 . Therefore, the angle between the outer plate 15 and the lower plate 12 can be set in a range of 90 degrees or less to 180 degrees or less.

When the outer plate 15 is inclined (the angle between the outer plate and the lower plate is greater than 90 degrees), the upper plate end and the lower plate end position of the core may be formed to be the same, And the distortion of the core due to the asymmetry of the position of the lower plate end can be prevented.

Embodiments of the arrangement structure of the flow path of the horizontal drainage material of the present invention can be divided into the earth pressure concentration type and the earth pressure dispersion type.

As shown in FIGS. 4, 5, 7 and 8, the earth pressure concentration type is a structure in which the flow path 16 becomes larger from the center line toward both sides.

When the embankment layer is formed on the horizontal drainage material, the middle part of the horizontal drainage material receives a lot of earth pressure and both sides receive a little earth pressure. Such structure is adopted to increase the rigidity of the part where the earth pressure is high.

Such a structure can be made by making the height and the thickness of the inner plate the same, but by increasing the interval between the inner plate and the inner plate as the distance from the central part to both sides increases.

It is possible to manufacture the earth pressure concentration type horizontal drainage material by changing the thickness of the inner plate. That is, the height of the inner plate and the spacing of the center plate of the inner plate are made the same, but the thickness of the inner plate is increased from both sides to the center, and the thickness of the inner plate becomes thicker .

Such a soil pressure concentration type horizontal drainage material may be effective when it is installed in a longitudinal direction in a longitudinal section such as a road-covered soil section.

As shown in Fig. 9, the earth pressure dispersion type forms a flow passage having a relatively small sectional area and a flow passage having a relatively large sectional area alternately.

The earth pressure dispersion type is a structure in which the earth pressure is effectively dispersed by forming the portion having the large rigidity alternately with the small portion, and the drainage performance can be maintained as there is no loss of the channel while dispersing the earth pressure.

The earth pressure distribution type horizontal drainage material can be made by making the height and the thickness of the inner plate the same, alternately forming large and small intervals between the inner plates.

A method of making earth pressure distributed horizontal drainage material can be produced by changing the thickness of the inner plate. That is, the height of the inner plate and the spacing of the center line of the inner plate are made constant, but the thickness of the inner plate may be formed by alternately forming the thicker and thinner ones.

Such a soil pressure distributing type horizontal drainage material may be effective when it is installed in a long section in the longitudinal direction such as a road-covered soil section, and in a lateral direction.

Both the earth pressure concentration type horizontal drainage material and the earth pressure distribution type horizontal drainage material can be formed symmetrically with respect to the center line.

The filter 20 may be configured to surround the outer circumferential surface of the core 10. Foreign matter such as soil to be mixed with the water is filtered by the filter 20. There is no particular limitation on the type and shape of the filter 20 and the ordinary engineer selects the thickness, the particle size, the tensile strength and the like according to the characteristics of the ground to stably cover the outside of the core 10.

Hereinafter, a soft ground construction method using the horizontal drainage material of the present invention will be described.

In order to solve such a problem, in the present invention, the reinforcing mat (200) and the gravel (201) are first laid on the surface layer of the soft ground, This is done after ensuring that the vertical drainage construction equipment is capable of running.

As shown in FIGS. 13 and 14, the reinforcing mat 200 is pulled from one side to the other side by using a device such as a winch on the surface layer of the soft ground G, and after the reinforcing mat covers the surface layer, Fix it to the ground.

In the method of fixing the reinforcing mat to the ground, the end portion of the reinforcing mat may be embedded in the soil 201 attached to the upper portion, or anchor may be fixed to the ground. The soil 201 can use the same material as the embankment layer.

The equipment can be run on the surface of the soft ground by the tensile strength of the reinforcing mat and the dispersion of the equipment load through the reinforcing mat (200) and the soil (201).

The material of the mat used herein may be any of PET, fiber mat, and nonwoven fabric depending on the situation of the site.

After the reinforcing mat 200 and the gravel 201 are laid on the surface layer of the soft ground, the vertical drainage material 7 is installed (FIG. 15).

The vertical drainage (7) is for draining the groundwater contained in the soft ground to the earth surface.

After installing the vertical drainage material, the horizontal drainage material 100 of the present invention is installed so that the groundwater drained in the vertical direction along the vertical drainage material is moved horizontally and drained to the drainage path.

The horizontal drainage members 100 may be installed in a parallel direction, or they may be arranged so as to overlap each other with a right angled or inclined grid structure.

Then, the vertical drainage material 7 is connected to the horizontal drainage material 100.

16 schematically shows a cross section in which the horizontal drainage material 100 and the vertical drainage material 7 are connected to each other on the reinforcing mat.

Then, the embankment layer 300 is formed and the consolidation proceeds in earnest.

The embankment layer can be added once or as needed to complete the construction of the soft ground.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1. Drain board 2. Filter material
3. Core 4a. Top surface
4b. 5. The bulkhead
6. Conventional horizontal drainage 7. Vertical drainage
100. Horizontal drainage
10. Core
11. Top plate 12. Base plate
13. Swash plate 14. Internal plate
15. Outer version 16. Euro
17. Top plate drainage 18. Ridgeline drainage
19. Internal plate drainage
20. Filter
200. Reinforced mat 201. Tosa
300. Clay soil
G. Soft ground E. Ground

Claims (10)

A core 10; And a filter (20) surrounding an outer surface of the core (10), wherein the core (10) has a plurality of flow paths (16)
The plurality of flow paths 16 may be formed so as to have a larger sectional area from the center to the side of the core 10. The plurality of flow paths 16 may have a relatively small cross- And the core 10 includes an upper plate 11, a lower plate 12, a swash plate 13, an inner plate 14 and an outer plate 15, The upper plate 11 is provided with three inner plates 14 and two outer plates 15 and the upper plate 15 is provided with an inclined plate 13, And is provided between the swash plate (13)
The space surrounded by the upper plate 11, the lower plate 12, the swash plate 13, the inner plate 14 and the outer plate 15 and the space surrounded by the upper plate 11, the lower plate 12, the swash plate 13, The space surrounded by the flow path 14 becomes the flow path 16,
An angle between the outer plate (15) and the lower plate (12) is 90 degrees or more and less than 180 degrees,
The upper plate 11 is provided with a top plate discharge hole 17 and the swash plate 13 is provided with a swash plate discharge hole 18
Horizontal drainage. The method according to claim 1,
The inner plate 14 is provided with an inner plate discharge hole 19
Horizontal drainage. 3. The method of claim 2,
The inclined plate discharging hole 18 and the inner plate discharging hole 19 are communicated with each other
Horizontal drainage. 4. The method according to any one of claims 1 to 3,
The upper plate 11 is flat or has a convex shape toward the center
Horizontal drainage. a) installing a reinforcing mat (200) on the surface of a soft ground, securing it on the ground, laying the soil (201) and entering the equipment;
b) installing a vertical drainage material (7) on the reinforcing mat (200) and the gravel (201) laid on in step a);
c) disposing the horizontal drainage (100) of any one of claims 1 to 3;
d) connecting the vertical drainage (7) and the horizontal drainage (100)
Soft ground construction method. 6. The method of claim 5,
After the step d)
e) forming an embankment layer (300) on the horizontal drainage
Soft ground construction method.
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