KR20190032805A - Plastic soil retaining wall and prefabricated soil retaining wall assembly comprising the same - Google Patents

Abstract

The present invention relates to a plastic lagging board and a prefabricated lagging board assembly comprising the same, and more specifically, to a plastic-based lagging board and a prefabricated lagging board assembly comprising the same, which has an underground water discharge passageway and a stepped fit-coupling structure. The present invention can: 1) minimize consumption of natural resources by utilizing waste plastic; 2) enhance durability and exclusiveness of a lagging board by using a plastic material; 3) prevent collapse of a soil surface and leakage of soil while constructing a fixating apparatus buried in the soil surface and the underground water discharge passageway, and reduce deformation of the lagging board due to reduction in water pressure; and 4) enhance constructability and guarantee integrity of the lagging board by using the stepped fit-coupling structure and a connecting steel pipe.

Description

TECHNICAL FIELD [0001] The present invention relates to a plastic plate and an assembled plate assembly including the plastic plate.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic sanitary plate and a prefabricated sanitary plate assembly comprising the same, and more particularly, to a plastic-based sanitary plate having a groundwater outflow passage and a stepped fit structure and a prefabricated sanitary plate assembly including the same.

The soil plate is to prevent the slope from collapsing or the soil from flowing out by inserting iron beam at regular intervals at the time of foundation work or incision construction work of the building and construction work of underground construction work. In the conventional soil plate construction, a wood soil plate or a C-shaped plate material plate is inserted into both side grooves of an H-shaped steel (thumb pile).

Wood soil boards are subject to long-term contact with soil and groundwater, and they suffer from deformation due to water absorption and corrosion and decay by harmful microorganisms and pests in the surrounding environment. Accordingly, in long-term use, it may lead to loss of soil plate due to durability deterioration and collapse of the slope surface. In addition, because there is no outflow passage for the groundwater contained in the slope surface, the soil plate may be greatly deformed and destroyed due to the rise of the earth pressure in the case of an excellent condition, and the drainage of the soil material may be caused to a great extent. Conventional timber slabs have to be subjected to surface coating treatment once or twice every year for reuse, which results in poor performance and unnecessary maintenance and labor costs. In addition, since wood is used as the main material, the environment has a large negative influence on the consumption of natural resources.

In the case of the steel plate, the allowable stress and flexural rigidity are high in material, and there is no fear of corruption, so it is more usable than the wood plate. However, since the steel plate is bent to form the C-shaped section, Corrosion problems due to water contact, and the problem of soil and groundwater leakage between soil plates. The high weight of the member is difficult to precise construction and is also the main cause of the increase of the construction cost.

Korean Patent No. 10-0755294 discloses a soil plate having a drainage and a drainage function. However, it is necessary to install a complicated device on the soil plate for the drainage function. In order to install the device, Since the insertion hole is formed at the central portion of the current plate, the flexural rigidity of the current plate may be deteriorated.

Korean Patent No. 10-1313747 provides a plastic plate having a structure capable of interlocking with each other, but since the structure for discharging the ground water is not included in the plate, the plastic deformation due to the earth pressure There is a drawback that a problem may occur.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a technology for manufacturing a soil plate having a plastic material as a main material to improve durability and drainage of groundwater. To this end, it provides the use of the connecting steel pipe and the stepped fitting structure to ensure the integrity between the groundwater spillway and the soil surface embedment fixture and the earth plate, and the soil plate thickness design technique to secure the bending stiffness.

In order to solve the above problems, the present invention provides a plastic plate having a staircase-like structure having stepped protrusions at the upper end of the front part and stepped depressions at the lower end of the front part, drainage holes penetrating the upper and lower sides, and connecting protrusions formed at the upper part.

In addition, the present invention provides a plastic top plate characterized by further comprising a connecting steel pipe insertion hole penetrating the top plate and the bottom plate.

In the present invention, the soil plate satisfies the following formula (3) and a wooden soil plate having the same height:

&Quot; (3) "

및

는 각각 목재 및 플라스틱 토류판의 두께이며,

및

은 각각 목재 및 플라스틱 토류판의 탄성계수이다.)(Wherein,

And

Are the thicknesses of the wood and plastic soil plates, respectively,

And

Are the modulus of elasticity of wood and plastic soil plates, respectively.

In the present invention, the "thickness of the soil plate" means the length from the rear surface to the front surface of the soil plate.

Further, the present invention is characterized in that the soil plate has an H-shaped steel insertion portion having a constant width (b1) with respect to a longitudinal section cut in a direction parallel to the ground, an inclined portion having a constant increase in width in the direction of the front surface of the soil plate, A structure including a center portion having a width b3,

Symmetrical shape based on the center of the soil plate,

The length L of the soil plate excluding the left and right H-shaped steel insertion portions, the half of the center portion length x, the width b1 of the H-shaped steel insertion portion and the width b3 of the center portion satisfy the following expression Wherein the plastic plate is made of a plastic material.

 &Quot; (4) "

Further, the present invention provides a plastic toothed plate, wherein the soil plate has a connecting groove formed to be fittable with the connecting protrusion, and is attached to the top of the soil plate.

Further, in the present invention, the soil surface embedding fixture is protruded by 5 to 30 mm to the rear portion of the soil plate after being bonded to the top of the soil plate.

In addition, the present invention provides a stair-step structure having stepped protrusions at the upper end of the front portion and stepped depressions at the lower end of the front portion, and a drain hole and a connecting steel pipe inserting hole penetrating the upper and lower portions, Formed plastic plate; A slope surface embossing fixture in which a connection groove to be fitted and connected to the connection protrusion of the earth plate is formed and drainage grooves and connection steel pipe insertion grooves having the same shape as the drain hole and the connection steel pipe insertion hole of the earth plate are formed; And a connecting steel pipe inserted to penetrate the connecting steel pipe inserting hole of the earth plate and the connecting steel pipe inserting groove of the slope surface embedment fixing device.

According to the present invention, 1) minimization of consumption of natural resources due to utilization of waste plastics; 2) Improvement of the durability of the plate and the improvement of the durability according to the use of the plastic material; 3) the collapse of the slope according to the composition of the subsurface burying device and groundwater outflow, the prevention of the drainage of soil, and the reduction of deformation of the soil plate due to the decrease of water pressure; 4) The stepwise tailoring structure and the use of the connecting steel pipe can improve the workability of the soil plate and secure the integrity.

1 is a perspective view of a plastic plate according to an embodiment of the present invention,
FIG. 2 is a perspective view (a) and a plan view (b) of a plastic plate according to an embodiment of the present invention,
3 is a perspective view (a: separate type, b: integral type) of the slope surface embedment fixing device 170 according to an embodiment of the present invention,
4 is a plan view showing a coupling relationship between the soil board 100 and the soil surface embedding fixture 170 according to an embodiment of the present invention,
5 is a perspective view of a pit board assembly 1000 in accordance with an embodiment of the present invention,
6 is a cross-sectional view taken along line I-I 'of FIG. 5,
7 is a sectional view taken along line II-II 'of FIG. 5;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In order to clearly explain the present invention, parts not related to the description are omitted, and similar parts are denoted by similar reference numerals throughout the specification, and detailed configuration directions will be described with reference to the drawings. Also, throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements, not excluding other elements, unless specifically stated otherwise.

The inventor of the present invention has developed a soil plate having a groundwater outflow passage and a stepwise tailoring structure by using plastic as a main material in order to solve the above-mentioned problems of the conventional wooden soil plate, .

Accordingly, the first aspect of the present invention is a stepped structure in which a stepped protrusion is formed at an upper end of a front portion and a stepped depression is formed at a lower end of a front portion, and a plasticle plate having a drain hole penetrating the upper and lower sides thereof and a connecting protrusion formed thereon. The present invention also discloses a prefabricated soil board assembly comprising the soil board as a second aspect. Hereinafter, the plastic plate according to the present invention will be described in detail with reference to examples.

1 is a perspective view of a plastic plate according to an embodiment of the present invention.

Referring to FIG. 1, the plastic plate 100 according to the first embodiment of the present invention has a stepped protrusion 110 having a predetermined height at an upper end of a front portion and a stepped depression 120 having a predetermined depth at a lower end of a front portion A connection protrusion 130 on the upper portion, and a drain hole 140 penetrating the upper and lower plates.

In the present invention, the front surface is a portion which is exposed in the outward direction when the toothed plate is installed, and means a surface opposite to the rear surface contacting the slope surface.

The stepped protrusion 110 and the stepped depression 120 protrude or sink into the upper or lower end of the front face of the plate. The height l1 of the stepped protrusion 110 may be equal to the sum of the depth l2 of the stepped depression 120 and the height l3 of the connection protrusion 130. [ That is, the relation of? 1 =? 2 +? 3 can be established. The width l4 of the top plate portion excluding the stepped protrusion 110 may be equal to or greater than the width l5 of the bottom plate portion excluding the stepped depression 120. [ That is, the relationship of? 4? 5 can be established. Preferably, l4 may be equal to l5. When the soil plate 100 is stacked to form the soil plate assembly, the stepped protrusion 110 of the lower soil plate is engaged with the stepped depression 120 of the upper soil plate to provide a firm bonding force, .

The connection protrusions 130 protrude from the top surface of the dust plate 100 except for the stepped protrusions 110 at regular intervals. The shape of the connection protrusion 130 is not particularly limited, and may be a shape of a cylinder, a quadrangular prism, a prismatic prism, or the like. The height l3 of the connection protrusion 130 may be formed to have a constant relationship with a height l1 of the stepped protrusion 110 and a depth l2 of the stepped depression 120. [ That is, the height can be set so that the relationship of l1 = l2 + l3 is established. Therefore, when the soil board 100 is laminated to form the soil board assembly, the lower surface of the upper soil board can be supported by the connecting protrusions 130 of the lower soil board. The connection protrusions 130 may be regularly arranged on the top surface of the dust plate 100 at regular intervals. Preferably, the set of the connecting protrusions 130 is formed on the upper surface of the dust plate 100 when a set of four to eight connecting protrusions 130, which are regularly spaced from each other, 2 to 5 sets can be formed at regular intervals.

The drain hole 140 is formed through the top and bottom of the soil plate 100 and functions as a passage through which groundwater can flow out. The shape of the drain hole 140 is not particularly limited, and its size is not particularly limited. The shape and size of the drain hole 140 can be appropriately adjusted by a person skilled in the art in consideration of the characteristics of the ground, the degree of drainage of groundwater, and the like. The number of the drain holes 140 is not particularly limited. However, if the number of the drain holes 140 is too small, the drainage of the groundwater may not be sufficient and the functions may not be normally performed. If the number of the drain holes 140 is excessively large, There is a possibility that the flexural stiffness is lowered and the risk of collapse of the slope surface is liable to occur. An ordinarily skilled engineer can appropriately adjust the number of the drain holes 140 to be formed in consideration of the amount of the gravel, the degree of flow of the groundwater, the characteristics of the ground, and the like. Preferably, the diameter of the drain hole is suitably 25 to 75 mm in consideration of the diameter of the earth plate connecting steel pipe, and the distance between the centers of the drain holes is equal to the distance between the centers of the connecting protrusions.

The soil plate 100 may further include a connecting steel pipe inserting hole 150 passing through the top and bottom thereof. The connecting steel pipe inserting hole 150 is a passage of a connecting steel pipe inserted through from the uppermost end to the lowermost end of the dust collecting plate assembly after the dust collecting plate 100 is laminated to form the dust collecting assembly. The shape and size of the connecting steel pipe insertion hole 150 can be appropriately adjusted according to the shape and size of the inserted connecting steel pipe. The number of the connecting steel pipe insertion holes 150 may be the same as the number of the drain holes 140. The connection pipe 150 may be formed adjacent to the drain hole 140 and may be integrally formed with the drain hole 140 if the connection pipe is fixed. .

The connection protrusion 130, the drain hole 140, and the connecting steel pipe insertion hole 150 may be formed on the upper surface portion of the soil plate 100 except for the stepped protrusion 110, as described above. , And the arrangement form thereof is not particularly limited. Preferably, the drain hole 140 and / or the connecting steel pipe insertion hole 150 may be formed in the middle between the connection protrusions 130 regularly formed at regular intervals in the front, rear, left and right.

In the present invention, the soil plate 100 may satisfy the following relationships with the following equations (1) to (3), in order to have a bending stiffness equal to or higher than that of a conventional soil plate having a wood as a main material:

[Equation 1]

&Quot; (2) "

&Quot; (3) "

및

는 목재 및 플라스틱 토류판의 두께, h는 토류판의 높이,

및

은 목재 및 플라스틱 토류판의 탄성계수이다.)
(Wherein,

And

Is the thickness of the wood and plastic soil board, h is the height of the soil board,

And

Is the modulus of elasticity of wood and plastics.

2 is a perspective view and a plan view of a plastic plate according to another embodiment of the present invention.

Referring to FIG. 2, the soil plate 100 according to the present invention includes an H-shaped steel insertion unit 160 having a constant width b1 on the basis of a longitudinal section cut in a direction parallel to the ground, And a central portion 163 having a constant width b3, and the inclined portion 161 having a constant width,

Symmetrical shape based on the center of the soil plate,

The length L of the soil plate excluding the left and right H-shaped steel insertion portions, the half of the center portion length x, the width b1 of the H-shaped steel insertion portion and the width b3 of the center portion satisfy the following expression And can be characterized as:

&Quot; (4) "

In the case where the cross-section of the cross-section of the cross-section of the cross-section is as described above, the cross-sectional moment of inertia of the cross-section of the cross-section can be increased to improve the bending resistance of the cross-

FIG. 3 is a perspective view of a slope surface embedment fixing device 170 according to an embodiment of the present invention, FIG. 4 is a perspective view illustrating a connection relationship between the soil board 100 and the slope surface embedment fixing device 170 according to an embodiment of the present invention. Fig.

Referring to FIG. 3, the soil surface embedding device 170 has a structure in which a connection groove 171, a drain groove 172, and a connecting steel pipe insertion groove 173 are formed.

The connection groove 171 may have the same shape, the same size, and the same positional arrangement as the connection protrusion 130 formed on the top surface of the dust plate 100, and may be fitted to the connection protrusion 130. The draining groove 172 and the connecting steel pipe inserting groove 173 may be formed in the same shape at the same positions as the drain hole 140 and the connecting steel pipe inserting hole 150 which penetrate the dust plate 100 up and down respectively. have.

1 and 3, the thickness l6 of the soil surface embedding device 170 is formed to be thinner than the height l3 of the connecting protrusion 130 formed on the top surface of the soil plate 100 . Preferably 5 mm? 3 -? 6? 30 mm, and most preferably 10 mm? 3 - 6? 20 mm.

The width l7 of the soil surface embedding device 170 may be longer than the top surface width l4 of the soil plate 100 excluding the stepped protrusion 110. [ Preferably 50 mm?? 7-? 4? 300 mm, and most preferably 100 mm? 7-? 4? 200 mm.

3 and 4, the length (l8) of the slope surface embossment fixture 170 is equal to the length (L) of the length L of the soil plate 100 excluding the portion to be inserted into the H- ). ≪ / RTI > Particularly, the slope surface embedding device 170 may be integrally formed and integrated with the connection protrusion 130 formed on the upper surface of the soil plate 100, or may be integrally formed with a plurality of the slope surface embedding devices 170 So that they can be individually engaged with the coupling protrusions 130 on the upper surface of the dust plate 100. [

The soil surface embedding device 170 may be manufactured using materials such as plastic, wood, and iron, and preferably plastics or steel.

The slope surface embedding device 170 coupled to the soil plate 100 functions as a stationary metal for the soil plate 100 and the slope surface to reduce the warping deformation of the soil plate 100 due to the earth pressure and water pressure. The thickness of the plastic plate 100 can be reduced. Particularly, in order to reduce warpage of the soil plate 100, it is preferable that the soil surface imbedded fixture 170 is integrally formed and joined with the connection protrusion 130 formed on the upper surface of the soil plate 100.

FIG. 4 shows an embodiment showing the coupling relationship between the connection protrusion 130 formed on the upper surface of the soil plate 100 and the soil surface embedding fixture 170.

The second aspect of the present invention is a stair-step structure having a calculation protrusion at an upper end of a front portion and a calculation depression at a lower end of a front portion, A plastic plate having a connecting protrusion formed therein; A slope surface embossing fixture in which a connection groove to be fitted and connected to the connection protrusion of the earth plate is formed and drainage grooves and connection steel pipe insertion grooves having the same shape as the drain hole and the connection steel pipe insertion hole of the earth plate are formed; And a connecting steel pipe inserted to penetrate through the connecting steel pipe inserting hole of the earth plate and the connecting steel pipe inserting groove of the slope surface embedment fixing device. Hereinafter, a pit plate assembly according to an embodiment of the present invention will be described in detail.

5 is a perspective view of a pit board assembly 1000 in accordance with an embodiment of the present invention.

Referring to FIG. 5, the soil plate 100 described above is stacked between H-shaped steel plates 200 installed at regular intervals. The top plate 100 positioned at the uppermost end of the top plate assembly 1000 can be applied to the top plate 100 of the above described type and the top stepped protrusion 110 and the connecting protrusion 130 of the top plate 100 are omitted A soil plate of the type may be used.

After the soil plate 100 is all stacked between the H-beams 100, the connecting steel pipe 300 is inserted through the connecting steel pipe inserting hole 150 formed in the top surface of the soil plate 100 to complete the soil plate assembly .

The connecting steel pipe 300 not only compensates for the flexural rigidity due to the ensuring of the integrity of the laminated plates 100, but also prevents the stress concentration phenomenon of the plate 100 due to the increase of the partial pressure of the earth pressure .

FIG. 6 is a cross-sectional view taken along the line I-I 'of FIG. 5, and FIG. 7 is a cross-sectional view taken along line II-II' of FIG.

Referring to FIG. 6, the stepped protrusion 110 formed at the upper end of the front face of the lower face plate may closely contact with the stepped depression 120 formed at the lower face of the front face of the upper face plate so that the upper and lower plate may be firmly supported have. Further, the connection protrusions 130 formed on the upper surface of the lower soil layer can form a gap between the upper soil layer and the lower soil layer, so that groundwater can be smoothly discharged through the drain hole 140.

6 and 7, a connection steel pipe insertion hole 150 formed through the current guide plate and a connected steel pipe 300 inserted through the connection steel pipe insertion hole 150 increase the integrity of the upper and lower plates of the stacked guide plate, It is possible to improve the flexural rigidity and the like. Also, the groundwater can be smoothly discharged through the drain hole 100 formed through the soil plate 100.

The preferred embodiments of the present invention have been described in detail with reference to the drawings. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

Accordingly, the scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning, range, and equivalence of the claims are to be construed as being included within the scope of the present invention do.

1000: Stray plate assembly
100: Stray plate 110: Cascade protrusion
120: stepped depression 130: connecting protrusion
140: drainage hole 150: connected steel pipe insertion hole
160: H-shaped section inserting section 161:
162: center portion 170:
171: connection groove 172: drainage groove
173: Connecting steel pipe insertion groove 200: H-shaped steel
300: Connection steel pipe
ℓ1: Height of stepped protrusion ℓ2: Depth of stepped depression
ℓ3: Height of connecting protrusion ℓ4: Top plate width except for stepped protrusion
ℓ5: Width of bottom plate of soil plate except stepped depression
ℓ6: Thickness of fixing device
ℓ7: Width of landing surface embedment fixture
ℓ8: Length of buried fixation device
b1: Width of the H-shaped section
b3: Trapezoidal center plate width
x: Half of the length of center plate
L: Length of soil plate excluding H-shaped section

Claims (7)

A stepped structure having a stepped protrusion at the top of the front part and a stepped depression at the bottom of the front part, and a drain hole passing through the top and bottom and a connecting protrusion formed at the top. The method according to claim 1,
Wherein the soil plate further comprises a connecting steel pipe inserting hole penetrating through the top and bottom. The method according to claim 1,
Wherein the soil plate satisfies the following formula (3): " (3) "
&Quot; (3) "

(Wherein,

And

Are the thicknesses of the wood and plastic soil plates, respectively,

And

Are the modulus of elasticity of wood and plastic soil plates, respectively. The method according to claim 1,
The soil plate has an H-shaped steel insertion portion having a constant width (b1), an inclined portion having a constant width in the direction of the front surface of the soil plate, and a constant width (b3) with reference to a longitudinal section cut in a direction parallel to the ground Having a central portion,
Symmetrical shape based on the center of the soil plate,
The length L of the soil plate excluding the left and right H-shaped steel insertion portions, the half of the center portion length x, the width b1 of the H-shaped steel insertion portion and the width b3 of the center portion satisfy the following expression A plastic soil plate characterized by:
&Quot; (4) "

5. The method according to any one of claims 1 to 4,
Wherein the soil plate further comprises a soil surface embossment fixing device formed with a connection groove capable of being fitted and connected to the connection protrusion part and being attached to an upper part of the soil plate. 6. The method of claim 5,
Wherein the soil surface embedding fixture is protruded by 5 to 30 mm to the rear surface of the soil plate after being bonded to the upper surface of the soil plate. A stepped structure having a stepped protrusion at the upper end of the front portion and a stepped depression at the lower end of the front portion, a plastic drain plate having a drain hole penetrating the upper and lower portions, a connecting steel pipe inserting hole, and a connecting protrusion formed on the upper portion;
A slope surface embossing fixture in which a connection groove to be fitted and connected to the connection protrusion of the earth plate is formed and drainage grooves and connection steel pipe insertion grooves having the same shape as the drain hole and the connection steel pipe insertion hole of the earth plate are formed; And
And a connecting steel pipe inserted to penetrate the connecting steel pipe inserting hole of the earth guide plate and the connecting steel pipe inserting groove of the slope surface embedment fixing device.

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