KR20160025058A - Multi-layer drain connecting structure for improving great deep soft ground - Google Patents

Abstract

The present invention relates to a connection structure for a drain to improve a deep soft ground. The connection structure for a drain is to prevent bending and deformation which may degrade a dehydration performance of a soft ground since vertical drains with different shapes and different structures according to the depth of the deep soft ground are formed in a multilayer. The connection structure for a drain comprises: an imperforation core drain connected to a horizontal drain installed on a ground part and formed in a structure in which the outer surface is closed, wherein the imperforation core drain is a vertical drain installed in the upper part of the deep soft ground and the deep soft ground is divided into an upper part, a middle part, and a lower part according to the depth under the ground part where the horizontal drain is installed; a spring core drain connected to the lower end of the imperforation drain and having the outer shape of a spring form and a circular cross-section, wherein the spring core drain is the vertical drain installed in the middle part of the deep soft ground; and a perforation core drain connected to the lower end of the spring core drain and having a through hole at fixed intervals on the outer surface, wherein the perforation core drain is the vertical drain installed in the lower part of the deep soft ground. The imperforation core drain, the spring core drain, and the perforation core drain has a hollow on the cross section.

Description

[0001] The present invention relates to a multi-layer drain connecting structure for improving soft ground,

The present invention relates to a connection structure of a vertical drain for improving a high degree of softness ground, and more particularly, to a vertical drain connection structure for improving a high degree of softness ground, Drain is formed in a multilayer structure so that ground improvement can be continuously and rapidly performed. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-layer drain connection structure for improving soft ground.

In order to construct structures such as residential areas, industrial complexes, airports, roads and embankments on soft grounds such as lakes, swamps and coasts, it is necessary to dehydrate the water and water contained in soft grounds so as to strengthen the strength of the ground Should be promoted.

The general soft soil dewatering method is a method of discharging water to the ground through draining by installing a board type drain for effective drainage and securing the embankment, securing the stability of embankment slope due to the high soil, securing the excavation depth, And the vacuum consolidation method has been developed to overcome these drawbacks. Recently, the amount of the vacuum pump is increasing due to improvement of the vacuum pressure transfer method and improvement of the vacuum pump performance.

Representative drains used in the vacuum consolidation method include a board-type drain and a cylindrical drain, and are classified in detail according to the construction method and purpose of the construction method.

The cylindrical drain is a structure in which moisture in the soft ground passing through the nonwoven fabric flows into the interior through the through holes of the plastic core and is discharged to the earth surface along with the hollow.

The board type drain is a structure in which moisture in the soft ground passing through the nonwoven fabric is discharged to the earth surface along a groove or hollow for drainage to various shapes of plastic cores inside, and the hollow core is mainly used as a multi- do.

However, recently, a large-scale landfill site development project has been carried out, and a large-thickness, high-strength soft ground has been required to be improved. However, since the soft ground is highly deformed due to settlement due to dehydration, As shown in FIG. 1, there is a problem that the drain shape is deformed by the earth pressure, which is increased in the course of bending and dehydration of the ground, and the dewatering ability is rapidly deteriorated.

As described above, the reduction of the dewatering ability caused by the breakage of the drain and the shape change causes an extension of the construction period, and thus there is a problem that the target quality can not be reached even as a solution of the additional buried earth.

  The present invention has been developed in order to solve the conventional problems that arise when a single type of drain is used when dewatering with a large degree of softness and ground, and a vertical drain having a different shape and structure depending on the depth of the soft ground Which is a factor that can lower the soft ground dewatering ability by being buried and installed.

Another object of the present invention is to easily adjust the length or to reassemble the connecting portion by connecting the upper and lower vertical drains to each other by thermal fusion or connector.

According to an aspect of the present invention, there is provided a drain connection structure for improving a superficial softness ground, wherein the superficial softness ground is divided into an upper portion, a middle portion and a lower portion according to a depth, A hollow core drain connected to a horizontal drain pipe installed on the ground portion and having an outer surface closed, the vertical drain being installed on an upper portion of the soft ground; A spring core drain connected to a lower end of the nonaqueous core drain and having a spring-like outer shape and having a circular cross-section, the vertical drain being installed at the center of the soft ground; And a hollow core drain connected to the lower end of the spring core drain and having a through hole at a predetermined interval on the outer surface, the vertical drain being installed at a lower portion of the soft center core, The core drain and the core drain are provided with a hollow in a cross section, thereby providing a multi-layer drain connection structure for improving the center of gravity soft ground.

Due to the above-described structure, the present invention is arranged in a multi-layered structure in which a vertical drain is installed in a multi-layered structure, so that the dewatering capability is not lowered until the completion of the construction, It is possible to prevent the cost increase caused by the delay of the period beforehand.

In addition, the present invention can easily adjust the length of the vertical drains buried in the multilayer structure by bonding the vertical drains to each other by thermal fusion or using a connector.

1 is a photograph showing an embodiment in which a drain is provided on a soft ground in the past.
2 (a) and 2 (b) are cross-sectional views illustrating an embodiment of a multi-layer drain connection structure for a vacuum consolidation method for improving the softness and softness ground according to the present invention.
3 (a) to 3 (c) are perspective views showing a vertical drain used in a multi-layer drain connection structure for a vacuum consolidation method for improving a high degree of softness ground according to the present invention.
4 (a) to 4 (d) are cross-sectional views illustrating an embodiment in which upper and lower vertical drains are connected in a multi-layer drain connection structure for a vacuum consolidation method for improving a superconducting soft ground according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 (a) and 2 (b) are cross-sectional views showing an embodiment of a multi-layer drain connection structure for improving the superconducting soft ground 100 according to the present invention, and Figs. 3 (a) And the vertical drain used in the multilayer drain connection structure for improving the soft ground 100 according to the present invention.

Hereinafter, a multi-layer drain connection structure for improving the superconducting soft ground 100 according to the present invention is applied to a vacuum consolidation method as an example. However, the present invention can be applied to a load- Of course.

In the present invention, the vertical drain is buried in the superficial soft earth 100 and the excess pore water is dewatered. In the upper part 100a, a non-core drain 300 connected to the ground horizontal drain pipe 200 is disposed A spring core drain 400 is installed in the middle portion 100b where the large deformation is generated and a core drain 500 is provided in the lower portion 100c where the earth pressure is greatly generated. According to the above structure, the present invention is characterized in that a dewatering action is smoothly exhibited in response to bending and shape deformation of the vertical drain.

More specifically, the present invention relates to a drain connection structure for improving the superficial softness ground 100, wherein the superficial softness ground 100 is located below the ground portion G on which the horizontal drain pipe 200 is installed, The horizontal drain pipe 200 is divided into a vertical portion 100a and a middle portion 100b and a vertical drain disposed on the upper portion 100a of the soft ground 100. The horizontal drain pipe 200, A non-core drain 300 connected with the outer surface and having an outer surface closed; A spring core drain 400 connected to the lower end of the hollow core drain 300 and having a spring shape and having a circular cross section and being a vertical drain installed in the middle portion 100b of the soft ground 100, ; And a hollow core drain connected to a lower end of the spring core drain and having a through hole at a predetermined interval on an outer surface thereof, the vertical drain being installed in a lower portion of the soft ground, The hollow core H, the spring core drain 400, and the hollow core drain 500 are formed in the cross-section of the hollow core drain 300, the spring core drain 400, and the hollow core drain 500, respectively.

First, the non-porous core drain 300 is installed on the upper portion 100a of the superficial soft earth 100 located immediately below the ground portion G.

As shown in FIG. 3A, the non-porous core drain 300 is a vertical drain in the form of a tube having a hollow H therein, and has a structure in which air and water are prevented from flowing through the outer surface. The non-porous core drain 300 is connected to the horizontal drain pipe 200 of the ground G to transmit the vacuum pressure to the soft ground, thereby preventing leakage of the vacuum pressure.

In addition, both the board type and the cylindrical type drain can be used depending on the drainage amount and the vacuum pressure transfer efficiency.

A spring core drain 400 is installed below the lower end of the non-porous core drain 300.

The spring core drain 400 has a spring shape as a whole and naturally forms a through hole 520 and has a circular cross section with a hollow H inside. The spring core drain 400 is installed in the center portion 100b of the superficial soft earth 100, which is a section where major deformation and settlement of the ground occurs. Therefore, the spring core drain 400 should be configured to correspond to the large deformation and settlement generated in the middle portion 100b. In order to meet the large deformation, the spring core drain 400 must shrink without resisting the settlement occurring in the soft ground dehydration process. The structure is suitable. That is, the spring core drain 400 is configured to absorb deformation at the subsidence compliance portion and maintain a cross-section for dewatering, so that no breakage occurs.

3 (b), the spring core drain 400 may further include a plurality of vertical pipes 420 attached to the outer surface at regular intervals along the longitudinal direction.

The vertical pipe 420 plays the role of supporting the spring structure from the outside, and it is economical to connect about four in the cross direction as shown in Fig. 3 (b). The vertical pipe 420 maintains a vertical degree when the spring core drain 400 is installed, and serves as a guide when connected to the upper and lower vertical drains. At this time, the non-woven fabric 600 may be further attached to the outer surface of the spring core drain 400, and moisture in the soft ground through the non-woven fabric 600 may flow along the hollow H of the spring core drain 400, (300).

And the pore core drain 500 is coupled to the lower end of the spring core drain 400.

As shown in FIG. 3 (c), the perforated core drain 500 is formed with a through hole 520 on its outer surface and a vertical drain having a hollow H therein. Like the non-porous core drain 300, the pore core drain 500 may be formed of a cylindrical or board-type drain, and may be selected corresponding to the displacement amount and the vacuum pressure transfer efficiency.

The core drain 500 is installed in the lower portion 100c of the soft ground 100 so as to resist the earth pressure and not deform the shape. In other words, the lower portion 100c of the superficial soft earth 100 works very much in the process of dewatering, and the core core drain 500 is configured to resist the earth pressure to maintain the shape, So that dehydration should proceed smoothly to the lower portion 100c. Of course, the core drain 500 may be slightly bent when the earth pressure and the settling are generated, but it is preferable that the dewatering section is also secured at this time.

In addition, the core drain 500 may further include a non-woven fabric 600 attached to the outer surface thereof, such as the spring core drain 400, and moisture in the soft ground through the non-woven fabric 600 may pass through the through- (520), flows into the upper portion (100a) along the hollow (H), and is discharged to the ground surface.

4 (a) to 4 (d) are cross-sectional views illustrating an embodiment in which upper and lower vertical drains are connected in a multi-layer drain connection structure for improving the superconducting soft ground 100 according to the present invention.

The present invention is characterized in that the non-magnetic core drain 300, the spring core drain 400, and the pore core drain 500 are coupled to each other through the heat fusion 700 or the connector 800.

In particular, FIGS. 4 (a) to 4 (c) show that the vertical drain is coupled to each other through the connector 800, and various shapes can be applied depending on the type and the type of the drain, as shown in FIG.

At this time, the connector 800 can be connected to the upper and lower vertical drains by being inserted into the inner hollow H of the non-magnetic core drain 300, the spring core drain 400, and the pore core drain 500 provided at both ends. That is, all of the vertical drains according to the present invention are provided with a hollow (H), and a cancellous connector 800 for inserting into a vertical drain to be bonded can be used so as not to interfere with a drain.

Next, FIG. 4 (d) shows that the upper and lower vertical drains are coupled to each other through the thermal fusion 700. As shown in FIG. 4 (d), each end of the vertical drain is joined by heat.

Meanwhile, according to the present invention, the upper and lower vertical drains can be joined by the heat fusion 700 or the connector 800, depending on the sectional shape and diameter of the vertical drain.

For example, as shown in FIG. 4A, when the cylindrical spring core drain 400 and the board-type vertical drain are coupled, it is preferable to be coupled to the connector 800 through the hollow H, 4 (b) and 4 (c), it can be coupled to the connector 800, as shown in FIG. 4 (d) .

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

It is therefore intended that the appended claims cover such modifications and variations as fall within the true scope of the invention.

G: above ground
H: hollow
100: Superficial and soft ground
100a:
100b: Central
100c: Lower
200: Horizontal drain pipe
300: Negative core drain
400: Spring core drain
420: vertical pipe
500: Pore core drain
520: Through hole
600: Nonwoven fabric
700: heat fusion
800: Connector

Claims (7)

In the drain connection structure for improving the high degree of softness ground 100,
The soft ground 100 is divided into an upper portion 100a, a middle portion 100b and a lower portion 100c depending on the depth below the ground portion G where the horizontal drain pipe 200 is installed,
A core drain connected to the horizontal drain pipe 200 provided at the ground G and closed at the outer surface thereof, the vertical drain being installed at the upper portion 100a of the soft ground 100, 300);
A spring core drain 400 connected to the lower end of the hollow core drain 300 and having a spring shape and having a circular cross section and being a vertical drain installed in the middle portion 100b of the soft ground 100, ; And
A hollow core drain 500 connected to a lower end of the spring core drain 400 and having a through hole 520 formed at a predetermined interval on the outer surface of the soft core 100, ;
, ≪ / RTI >
Wherein the hollow core drain 300, the spring core drain 400, and the hollow core drain 500 are provided with a hollow H in a cross-sectional view. The method of claim 1,
Wherein the non-porous core drain (300) and the hollow core drain (500) are formed of a board-shaped or cylindrical vertical drain. The method of claim 1,
Wherein the spring core drain (400) further comprises a plurality of vertical pipes (420) attached to the outer surface at regular intervals along the longitudinal direction. The method of claim 1,
Wherein the non-woven fabric (600) is further attached to the outer surfaces of the spring core drain (400) and the pore core drain (500). 5. The method according to any one of claims 1 to 4,
Wherein the non-porous core drain (300), the spring core drain (400), and the porous core drain (500) are bonded to each other through a heat fusion (700) or a connector (800) Drain connection structure. The method of claim 5,
The connector 800 is connected to the upper and lower vertical drains by inserting the hollow core H of the hollow core drain 300, the spring core drain 400 and the hollow core drain 500, Multi - layer drain connection structure to improve soft ground. 5. The method according to any one of claims 1 to 4,
Wherein the multi-layer drain connection structure for improving the superconducting soft ground (100) is applied to a vacuum consolidation method or a load-carrying method, the multi-layer drain connection structure for improving the superconducting soft ground.

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