KR100773777B1 - NW-shape Plastic drain board for water draining in weak foundation - Google Patents

NW-shape Plastic drain board for water draining in weak foundation Download PDF

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KR100773777B1
KR100773777B1 KR1020070016298A KR20070016298A KR100773777B1 KR 100773777 B1 KR100773777 B1 KR 100773777B1 KR 1020070016298 A KR1020070016298 A KR 1020070016298A KR 20070016298 A KR20070016298 A KR 20070016298A KR 100773777 B1 KR100773777 B1 KR 100773777B1
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board
core
drainage
ground
present
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KR1020070016298A
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KR20070026760A (en
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최호길
주기만
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최호길
주기만
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
    • E02D31/025Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00Geometrical or physical properties
    • E02D2200/12Geometrical or physical properties corrugated

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

본 발명은 NW형태의 단면 구조를 갖는 코어(보드)를 구비한 드레인보드 배수재에 관한 것으로 그 목적은 PBD (Plastic Board Drain)공법을 현장 시공함에 있어 시공 후 토압에 의한 측압에 의해 배수재의 필터가 코어(보드)의 정점부에 압력으로 인해 눌려지면서 코어(보드)의 고유기능인 간격(공간) 유지가 배수재의 기능을 유지함에도 불구하고 측압에 의한 코어(보드) 정점부의 변형으로 인해 간격(공간) 유지가 지속성을 갖지 못해 이에 대한 보완 및 기능 향상을 목적으로 한다. The present invention relates to a drainboard drainage material having a core (board) having a cross-sectional structure of NW type. The object of the present invention is to filter the drainage material by side pressure by earth pressure after construction in the field construction of the PBD (Plastic Board Drain) method. Although the gap (space), which is inherent to the core (board), is pressed by the pressure on the apex of the core (board) and maintains the drainage function, the gap (space) is caused by deformation of the core (board) vertex by side pressure. Maintenance is not sustainable and is intended to complement and improve its function.

상기의 목적달성을 위한 본 발명은 배수재의 고유 역할인 코어(보드) 간격(공간) 유지를 확보하기 위해 직선형의 돌기부와 그 사이의 사선구조를 보강형성하여 지층의 간극수(수분)를 지상으로 배출하여 지반을 단기간에 견고하게 할 수 있다.In order to achieve the above object, the present invention reinforces and forms a straight protrusion and an oblique structure therebetween in order to secure core (board) spacing (space), which is an inherent role of drainage, and discharges pore water (moisture) in the ground to the ground. The soil can be hardened in a short time.

연약지반, 드레인보드, 코어 Soft ground, drain board, core

Description

연약지반의 배수를 위한 NW형 드레인보드{NW-shape Plastic drain board for water draining in weak foundation}NW-shape Plastic drain board for water draining in weak foundation}

도 1은 본 발명에 의한 드레인 보드의 코어를 포함한 배수재의 분해사시도를 나타낸 것이다. Figure 1 shows an exploded perspective view of the drain material including the core of the drain board according to the present invention.

도 2는 본 발명의 드레인보드의 코어를 나타내는 분해사시도이다.2 is an exploded perspective view showing the core of the drainboard of the present invention.

도 3은 본 발명의 드레인보드의 코어의 돌기부의 단면을 확대하여 나타낸 것이다.Figure 3 is an enlarged cross-sectional view of the projection of the core of the drainboard of the present invention.

본 발명은 연약지반에 수직으로 삽입설치되어 토양에 포함된 수분을 배출시시키는 드레인보드에 관한 것이다. 더욱 상세하게는 드레인보드의 코어의 양측면에 돌기부가 돌출형성되어 돌기부 사이에 복수의 통공이 형성되고, 통공이 토압에 의해 함몰되지 않고 배수성능을 유지할 수 있도록 각 돌기부 사이에 사선으로 보강구조가 형성된 드레인보드의 코어에 관한 것이다.The present invention relates to a drain board that is installed perpendicular to the soft ground to discharge the moisture contained in the soil. More specifically, protrusions are formed on both sides of the core of the drain board so that a plurality of holes are formed between the protrusions, and a reinforcement structure is formed diagonally between each of the protrusions so that the holes can be maintained without draining by earth pressure. It relates to the core of the drain board.

일반적으로 간척지나 해안지대와 같이 토양중에 수분이 많이 포함되어 있는 지대는 지반이 연약하여 지반상부에 토목구조물이나 건축물 등이 안정되게 건설될 수 없으므로, 연약지반에 토목공사나 건축공사를 시행하기 위해서는 연약지반을 단단하게 개량하는 개량공사가 선행되어야 한다.Generally, in the case of reclaimed land or coastal areas, the soil containing a lot of moisture in the soil is soft so that civil structures or buildings cannot be stably built on the ground. Improvement work to firmly improve the ground should be preceded.

연약지반을 개량하기 위한 공법으로는 연약지반에 무수히 많은 기둥을 박고 그 기둥의 선단부에 콘크리트 구조물을 설치하는 방법과 연약지반에 약액을 주입하여 약액이 굳어지면서 다수의 파일이 형성되어 그 파일의 선단부에 토목구조물을 설치하는 방법이 있으나 비용과 공사기간면에서 불리한 단점이 있다.In order to improve the soft ground, a number of pillars are put on the soft ground, concrete structures are installed at the tip of the pillar, and the chemical liquid is injected into the soft ground to form a plurality of piles. There is a method of installing civil structures in the building, but there are disadvantages in terms of cost and construction period.

연약지반을 개량하기 위한 공법중의 하나인 PBD(Plastic Board Drain)공법은 연약지반의 지중에 배수재인 플라스틱 드레인보드를 지반에 수직으로 삽입하여 설치한 후 연약지반 지중에 내재되어 있던 간극수(수분)를 수직으로 삽입 설치한 배수재를 통하여 지표면으로 상승시켜 배출하게 하는 것이다.PBD (Plastic Board Drain) method, which is one of the methods for improving the soft ground, is installed by inserting the plastic drain board, which is a drainage material, in the ground of the soft ground vertically to the ground. Is discharged by rising to the ground surface through a vertically installed drain.

배수재는 플라스틱 재질의 코어(보드)와 미세토립자 또는 지중에 내재되어 있는 다수의 이물질의 유입을 막고 순수한 간극수(수분)만을 여과시켜 배출할 수 있게 하는 필터(부직포)로 이루어지며 일정한 간격을 유지하여 수직으로 구성된 칸막이 사이로 배수로가 형성괴어 그 배수로를 통하여 연약지반의 수분을 강제 배출시키는 것이다.Drainage is composed of a plastic core (board) and a fine granule or a filter (non-woven fabric) to prevent the inflow of a large number of foreign substances in the ground and to filter and discharge only pure pore water (moisture), and to maintain a constant interval A drainage path is formed between the partitions formed vertically, and the water of the soft ground is forced out through the drainage path.

종래의 구조를 갖춘 배수재의 코어를 연약지반상의 시공하는 경우 고유의 기능인 배수능력이 배수재의 변형, 휘어짐, 꼬임, 접힘 등에 따라 코어(보드) 단면 구조 변화에 의해 배수로의 막힘현상이 발생하여 배수성능이 저하되는 문제점이 발생하고 있다. 즉, 토양내부에 배수재가 삽입설치되어 수분을 흡수, 방출시키는 과정이 진행됨에 따라 침하되는 지반에 의해 배수재의 양측면으로 강한 토압을 받게 되고, 이에 의해 배수재의 외측면을 감싸는 필터재가 보드의 돌기부사이의 공간으로 함몰되어 공간부를 협소하게 하며, 배수재 자체의 변형을 유발하여 배수효율이 감소된다.When the core of the drainage material with the conventional structure is installed on the soft ground, the drainage capacity, which is an inherent function, is blocked by the core (board) cross-sectional structure change due to the deformation, bending, twisting, and folding of the drainage material. This deterioration problem has arisen. That is, as the drainage material is inserted into the soil and absorbs and releases the moisture, the soil subsides to receive strong earth pressure on both sides of the drainage material, and thus the filter material surrounding the outer surface of the drainage material is provided between the protrusions of the board. It is recessed into the space, narrowing the space part, and causing the deformation of the drain material itself, the drainage efficiency is reduced.

또한, 특허제457013호에 개시된 바와 같이 복수개의 코어를 적층하여 배수 공간을 확보하는 방법이 있으나, 적층된 보드사이의 간격만 확보되고 돌기부의 길이에도 한계가 있어 충분한 효율을 발생시킬 수 없었다.In addition, there is a method of securing a drainage space by stacking a plurality of cores as disclosed in Patent No. 457013, but only the spacing between the stacked boards is secured, and the length of the protrusion is limited, so that sufficient efficiency cannot be generated.

따라서, 본 발명의 드레인보드는 시공후 압밀이나 측압에 의한 배수재의 코어(보드)가 변형되는 것을 방지하여 코어(보드)와 필터재의 간격을 유지함에 따라 배수로 배수공간을 확보하고, 막힘현상을 사전에 방지함으로서 종래의 방식보다 충분한 배수로 확보로 인한 지중의 간극수를 원활하게 지상으로 배출되도록 한다.Therefore, the drain board of the present invention prevents deformation of the core (board) of the drain material due to consolidation or lateral pressure after construction to secure the drainage drainage space as the gap between the core (board) and the filter material is maintained, and prevents clogging phenomenon. By preventing the water to be discharged to the ground smoothly to the ground clearance due to the sufficient drainage than conventional methods.

또한, 본 발명의 드레인보드 코어구조는 각 돌기부 사이에 사선의 보강구조때문에 종래 보드의 돌기부 2~3mm의 길이보다 증가된 5~6mm의 길이를 갖게 되어 배수공간을 더욱 확보하여 배수효율을 극대화 하고자 한다.In addition, the drain board core structure of the present invention has a length of 5 to 6mm increased than the length of the projections 2 to 3mm of the conventional board because of the oblique reinforcement structure between each projection to secure a drainage space to maximize drainage efficiency do.

본 발명의 구성을 이하 도면을 참조하여 상세히 설명한다.The configuration of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 의한 드레인 보드의 코어와 코어를 감싸고 있는 필터재로 이루어져 있는 배수재의 분해사시도를 나타낸 것이다. 도 2는 본 발명의 드레인보드의 코어를 나타내는 분해사시도이며, 도 3은 본 발명의 드레인보드의 코어의 돌 기부의 단면을 확대하여 나타낸 것이다.Figure 1 shows an exploded perspective view of a drain material consisting of the core and the filter material surrounding the core of the drain board according to the present invention. 2 is an exploded perspective view showing the core of the drain board of the present invention, Figure 3 is an enlarged cross-sectional view of the stone base of the core of the drain board of the present invention.

도 1에 나타낸 바와 같은 배수재(1)를 연약지반에 수직으로 삽입설치하면 토양은 필터재(2)를 통과하지 못하고 수분만 통과하여 코어(3)의 돌기부 사이의 공간으로 이동하며, 상기 공간에 고인 수분은 모세관 현상을 통하여 지표로 상승, 배출된다.When the drainage material 1 as shown in FIG. 1 is vertically inserted into the soft ground, the soil does not pass through the filter material 2 but passes only moisture, and moves to the space between the protrusions of the core 3, The accumulated water is raised and discharged to the surface through capillary action.

본 발명의 드레인보드는 종래의 드레인보드가 단순히 코어 심재의 양측면에 돌기부가 형성되어 있는 것과 달리 도2 및 도3에 나타낸 바와 같이 돌기부(4a) 사이에 사선구조를 보강한 구조로 이루어져 있다. 따라서, 본 발명의 드레인보드는 삽입설치후 지반내의 횡압에 의해 돌기부가 접히거나 코어의 변형을 방지할 수 있다. The drain board according to the present invention has a structure in which a diagonal structure is reinforced between the protrusions 4a as shown in FIGS. 2 and 3, unlike the conventional drain boards having protrusions formed on both sides of the core core. Therefore, the drain board of the present invention can prevent the protrusion or the core from being deformed by the transverse pressure in the ground after the installation.

또한, 종래 드레인보드는 돌기부의 접힘을 방지하기 위하여 그 길이가 2~3mm로 한정되는 한계가 있으나, 본 발명의 드레인보드는 사선형태의 보강구조로 인하여 돌기부가 지지되므로 길이를 5~6mm까지 연장형성되도록 하여 배수공간의 확보로 인해 배수효율을 극대화할 수 있다.In addition, the conventional drain board has a limitation that the length is limited to 2 ~ 3mm in order to prevent the folding of the protrusion, the drain board of the present invention is extended by a length of 5 ~ 6mm because the protrusion is supported by the diagonal reinforcement structure It is possible to maximize the drainage efficiency by ensuring that the drainage space is formed.

종래의 드레인보드에 의한 배수성능과 본 발명의 드레인보드에 의한 배수성능을 표1에 나타내었다(Delft법을 이용한 배수성능).The drainage performance by the conventional drain board and the drainage performance by the drain board of the present invention are shown in Table 1 (drainage performance using the Delft method).

본 발명의 드레인보드Drain board of the present invention 종래 드레인보드Conventional Drain Board 배수성능 (㎤/s)Drainage performance (cm 3 / s) 직선Straight 8080 26.226.2 30% 변형*30% strain * 6161 17.117.1

*직선의 돌기부가 횡압에 의해 30%변형된 경우의 배수성능* Drainage performance when straight protrusions are deformed 30% due to lateral pressure

표1에 나타낸 바와 같이 본 발명의 드레인보드를 이용한 경우 종래의 단순한 수직으로 돌출형성된 코어구조에 비하여 직선형태 유지시 및 30%변형 후에도 3~3.5배의 우수한 배수성능을 나타냄을 알 수 있다.As shown in Table 1, when the drain board of the present invention is used, it can be seen that the drainage performance of 3 to 3.5 times is excellent in the case of maintaining the straight shape and after 30% deformation compared to the conventional simple vertically protruding core structure.

상기한 바와 같이 본 발명의 NW형태의 드레인보드를 사용하면 PBD의 시공 후 압밀이나 측압에 의한 배수재의 코어(보드)가 변형되는 상황에서 코어(보드)와 필터재의 간격을 유지함에 따라 배수로 배수공간을 유지시켜 막힘현상을 사전에 방지함으로서 종래의 방식보다 충분한 배수로 확보로 인한 지중의 간극수를 원활하게 지상으로 배출되도록 할 수 있다.As described above, when the NW-type drain board of the present invention is used, the drainage space of the drainage space is maintained by maintaining the gap between the core (board) and the filter material in the situation where the core (board) of the drain material is deformed by consolidation or side pressure after the construction of the PBD. By preventing the blockage in advance to prevent the clogging phenomenon in advance to ensure a sufficient drainage of the ground can be discharged to the ground smoothly discharged to the ground.

Claims (2)

연약지반에 수직으로 삽입설치되어 연약지반 내부의 수분을 배출시키도록 하는 연약지반의 배수용 드레인보드에 있어서,In the drain board for drainage of the soft ground to be inserted perpendicular to the soft ground to discharge the moisture inside the soft ground, 상기 드레인보드의 코어는 복수의 수직으로 돌출 형성된 5~6㎜의 돌기부(4a) 사이에 사선으로 보강구조(4b)가 형성되어 NW형태이고, PE 또는 PP로 된 필터재(2)로 포장된 것을 특징으로 하는 연약지반의 배수용 드레인보드.The core of the drainboard is a NW-shaped reinforcement structure 4b is formed between the plurality of vertically protruding projections 4a having a length of 6 to 6mm, and is packed with a filter material 2 made of PE or PP. Drain board for drainage of the soft ground, characterized in that. 삭제delete
KR1020070016298A 2007-02-16 2007-02-16 NW-shape Plastic drain board for water draining in weak foundation KR100773777B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09158165A (en) * 1995-12-07 1997-06-17 Nakamura Bussan Kk Partition wall structure body screen and use method thereof
KR100636310B1 (en) 2006-02-07 2006-10-18 박춘민 The drainage system of the pbd public law which has the core of a x form
KR20070010335A (en) * 2005-07-18 2007-01-24 주식회사 대한아이엠 Core of drain board

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09158165A (en) * 1995-12-07 1997-06-17 Nakamura Bussan Kk Partition wall structure body screen and use method thereof
KR20070010335A (en) * 2005-07-18 2007-01-24 주식회사 대한아이엠 Core of drain board
KR100636310B1 (en) 2006-02-07 2006-10-18 박춘민 The drainage system of the pbd public law which has the core of a x form

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