KR20190037416A - Buttress unit for retaining wall and assembly type retaining wall with the same - Google Patents

Abstract

The present invention provides a buttress unit for a retaining wall and a prefabricated retaining wall including the same, capable of improving overturning resistance capacity of a retaining wall and structural stability and remarkably reducing the amount of earthwork for construction of the retaining wall. The buttress unit for a retaining wall enables excavation at a starting point of an inclined surface of earth and sand at a closer point to the retaining wall in comparison with an existing buttress unit. According to the present invention, the buttress unit for a retaining wall includes: a bottom plate; a wall erected on the bottom plate; and a buttress body supporting the wall by being erected on the bottom plate. The buttress body is formed as the multiple buttress units are connected to each other in the height direction of the retaining wall. The buttress unit includes: a plate body; a first anchoring rail on the left side of the front end of the plate body; a second anchoring rail on the right side of the front end of the plate body; a first bulb rail on the left side of the rear end of the plate body; a second bulb rail on the right side of the rear end of the plate body; a first upper rail on the left side of the upper end of the plate body; a second upper rail on the right side of the upper end of the plate body; a first lower rail on the left side of the lower end of the plate body; and a second lower rail on the right side of the lower end of the plate body.

Description

TECHNICAL FIELD [0001] The present invention relates to a sub-wall unit for a retaining wall and a retaining wall having the same. BACKGROUND OF THE INVENTION [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retaining wall, and more particularly, to a sub-wall installed in an assembling manner and a prefabricated retaining wall constructed on the same.

The retaining wall refers to a structure that is installed at the edge of a mountain road to prevent the soil from collapsing. Conventionally, the retaining wall has been constructed by laying the plywood form on the foundation after the foundation construction and laying the wall on the floor step by step according to the height, as in the construction of the concrete structure.

However, since such a cast-in-place method is installed at a work site, it takes a long time for the retaining wall to be installed and the concrete to harden, so that it can perform the role of a retaining wall. There is a problem that it takes. For this reason, recently, prefabricated retaining walls have been used which are manufactured in advance in a manufacturing factory or factory, moved to a work site after the curing has been completed, and then assembled and assembled in the field (refer to the prior patents 1 and 2).

Conventionally, the prefabricated retaining wall uses a sub-wall as a front plate supporting means. Conventionally, the conventional sub-wall has a structure in which the sectional area of the sub-wall decreases from the lower end to the upper end.

In order to construct such a retaining wall, it is necessary to first make a tearing machine. In case of tearing machine, it is necessary to form a slope of the slope from the point about 1m away from the bottom of the retaining wall and to construct the tearing machine safely. However, if a slope is formed on a slope, it is impossible to construct a retaining wall because it is impossible to construct a slope. In order to solve this problem, additional reinforcement measures and / There is a problem that the cost rapidly increases.

On the other hand, the main factor of the force acting on the retaining wall is the main pressure, which is concentrated in the area of about 1/3 to 1/2 of the height of the wall at the bottom of the wall. Therefore, in designing the subwall supporting the retaining wall, it is preferable that the subwall is formed of a reverse gradient structure (i.e., a substantially inverted triangle structure) from the lower end of the wall to about 1/3 to 1/2 point, It is best suited for stability. This is because, when the sub-wall is designed with the above-described reverse gradient structure, the center of gravity of the entire sub-wall of the conventional tread structure (i.e., the right triangle structure) is shifted to the rear (i.e., farther from the wall) (Particularly, the main dynamic pressure) can be improved.

However, in the case of a conventional sub-wall, it is manufactured by pouring concrete. Thus, there is a limit in which it is impossible to form the sub-wall in a reverse gradient structure.

Previous Patent 1. Korean Patent No. 0799358 (Registered on January 23, 2008) Prior Patent 2. Korean Patent Publication No. 1996-0011009 (Disclosure Date: Apr. 20, 1996)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to improve the conductive resistance and structural stability of a retaining wall, to significantly reduce the amount of pockets for retaining wall construction, And to provide a sub-wall unit capable of disposing a starting point of the slope of the slope at a near point and a prefabricated retaining wall having the sub-wall unit.

According to another aspect of the present invention, there is provided a prefabricated retaining wall comprising: a bottom plate; A wall mounted on the bottom plate; And a subwall mounted on the bottom plate to support the wall, wherein the subwall is formed by interconnecting the plurality of subwall units in the height direction of the retaining wall.

The sub-wall unit includes a plate body; A first fixing rail protruding from a left side of a front end of the plate body along a height direction of the plate body; A second fixing rail protruding from the right side of the front end of the plate body along a height direction of the plate body; A first bulb rail protruding from a left side of a rear end of the plate body along a height direction of the plate body; A second bulb rail protruding along a height direction of the plate body on a right side surface of a rear end of the plate body; A first upper rail protruding from a left side of an upper end of the plate along a longitudinal direction of the plate; A second upper rail protruding from the upper right side surface of the plate body along the longitudinal direction of the plate body; A first lower rail protruding along a longitudinal direction of the plate body on a left side surface of a lower end of the plate body; And a second lower rail protruding from the right side of the lower end of the plate along the longitudinal direction of the plate.

The sub-wall unit has a first upper gap formed between one end of the first upper rail and the first fixing rail, and a second upper gap is formed between one end of the second upper rail and the second fixing rail. A gap is formed.

Preferably, the sub-wall unit may have a third gap formed between the other end of the first upper rail and the first bulb rail, and a third gap may be formed between the other end of the second upper rail and the second bulb rail. Spacing can be formed.

In this case, the sub-wall unit has an upper region of one side edge inserted into the third gap to restrict the flow by the first bulb rail and the first upper rail, and is mounted on the first lower rail to be bulged into the bulb of the sub- And may further include a bulbous plate acting thereon.

The subwall unit for retaining wall and the assembled retaining wall having the same according to the present invention have the following various effects.

(1) The retaining wall of the present invention can significantly increase the earth contact area in the direction orthogonal to the earth pressure direction by the bulb plate or the first and second bulb rails of the sub-wall unit, It can act as a shear force to resist the seawater, which greatly enhances the ability of the retaining wall to resist conduction.

(2) According to the retaining wall of the present invention, it is possible to reduce the width of the bottom plate compared to the bottom plate of the conventional retaining wall, thereby reducing the amount of the retaining wall for retaining wall construction. Can be greatly reduced.

(3) The retaining wall of the present invention is a system for selectively assembling sub-wall units having different widths, and it is possible to design a sub-wall having a reverse gradient structure at 1/3 to 1/2 point of the wall height at which the earth pressure is concentrated Therefore, it is possible to maximize the conductive resistance and structural stability of the retaining wall.

(4) In the case of the retaining wall in the past, when the retaining wall is close to the building site, the retaining wall can not be constructed due to the impossibility of using the trowel. However, according to the retaining wall of the present invention, the slope can be formed at a point deviating from the building, Can be improved.

(5) The prefabricated retaining wall affects the mold production cost and transportation cost according to the shape which is separated by factory production. In addition, the height of the retaining wall is not uniform, and the mold production costs accordingly. However, the retaining wall according to the present invention is capable of extinguishing the retaining walls of various structures with a small formwork, which is a structure in which the sub walls and the wall are partly assembled, and it is possible to flexibly design any height of the sub walls, There are excellent advantages such as.

(6) In order to construct the retaining wall of the present invention, it is possible to assemble the entire retaining wall and then back fill. However, depending on the site conditions, it is possible to re- It is excellent in responsiveness and can eliminate the risk factors that may occur during construction period.

(7) In the case of the integral wall, the cost increases and the transportation of construction materials becomes difficult due to excessive thickness of the wall, the thickness of the front wall, and the amount of rebar, as the height of the integral wall increases. However, There is an advantage that the retaining wall can be constructed without sharp increase.

1 is a left side perspective view of a retaining wall sub-wall unit according to the present invention.
Fig. 2 is a right side perspective view of Fig. 1; Fig.
3 is a perspective view of a bulb plate according to the present invention;
4 is a perspective view of a bottom plate according to the present invention.
5 is a rear side perspective view of a wall according to the present invention.
6 is a front side perspective view of a wall according to the present invention.
7 is a perspective view showing an assembly structure of a bottom plate and a sub-wall unit according to the present invention.
8 is a view showing the construction of a one-story assembly structure according to the present invention.
9 is a view showing a state in which a bulbous plate is further installed on the one-layered structure of FIG.
10 is a view showing a state in which a two-layer sub-wall unit is further installed in the one-storey building structure of FIG.
FIG. 11 is a view showing the construction of a two-story building structure in which a wall and a bulbous plate are installed in the building structure of FIG. 10;
12 is a perspective view of a prefabricated retaining wall constructed from a multi-layered construction according to the present invention.
13 is a rear side perspective view of the assembled retaining wall according to the present invention.
14 is a cross-sectional view showing a construction and a tearing machine of a conventional retaining wall.
15 is a sectional view showing a construction structure and a tappet of the assembled retaining wall according to the present invention.
16 is a modification of the wall of the assembled retaining wall according to the present invention.
17 and 18 are still another modified embodiment of the wall of the prefabricated retaining wall according to the present invention.
Figure 19 is a perspective view of a prefabricated retaining wall constructed using the wall of Figure 17;

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Also, in the present specification, the term " above or above " means to be located above or below the object portion, and does not necessarily mean that the object is located on the upper side with respect to the gravitational direction. It will also be understood that when a section of an area, plate, or the like is referred to as being " above or above another section ", this applies not only to the case where the other section is " And the like.

Also, in this specification, when an element is referred to as being " connected " or " connected " with another element, the element may be directly connected or directly connected to the other element, It should be understood that, unless an opposite description is present, it may be connected or connected via another element in the middle.

Also, in this specification, the terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

Hereinafter, preferred embodiments, advantages and features of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a left side perspective view of a retaining wall unit according to the present invention, FIG. 2 is a right side perspective view of FIG. 1, and FIG. 3 is a perspective view of a bulb plate according to the present invention.

1 to 3, the retaining wall sub-wall unit 100 of the present invention is a unit body constituting a retaining wall sub-wall, in which a plurality of sub-wall units 100 are disposed in the height direction of the retaining wall Vertical direction) to form a single sidewall.

Specifically, the retaining wall sub-wall unit 100 includes a plate 10, a first fixation rail 20, a second fixation rail 21, a first bulb rail 30, a second bulb rail 31, The first upper rail 40, the second upper rail 41, the first lower rail 42, the second lower rail 43, the first upper gap 22 and the second upper gap 23, Further comprises a first lower gap (24) and a second lower gap (25).

The plate body 10 of the sub-wall unit 100 may be formed of a plate-like member having a rectangular or square shape, and may be manufactured as a precast concrete block.

The plate body 10 is connected to the plates of another sub-wall unit 100 by the first and second upper rails 40 and 41 and the first and second lower rails 42 and 43 to form one sidewall do.

The first fixing rail 20 of the sub-wall unit 100 is configured to protrude from the left side of the front end of the plate 10 in a direction perpendicular to the left side, (400) on the bottom plate (300) to be described later by engaging with the first fitting portion (420) of the bottom plate (400).

According to a preferred embodiment, the first fixing rail 20 may be formed of a rod-shaped vertical member continuously protruding along the height direction of the plate body 10 at the front surface of the left side surface of the plate body 10.

The left side surface of the plate body 10 of the present invention refers to a side surface vertically disposed on the bottom plate 300 of the retaining wall and the wall body 400. The right side surface of the plate body 10 corresponds to the bottom plate 300 of the retaining wall And the other side surface vertically disposed on the wall 400 is referred to as the opposite surface of the left side surface.

The second fixing rail 21 of the sub-wall unit 100 is configured to protrude in the vertical direction of the right side surface on the right side of the front end of the plate 10, So that the wall 400 can be erected and fixed on the bottom plate 300 to be described later.

According to a preferred embodiment, the second fixing rail 21 may be formed of a rod-like vertical member continuously protruding along the height direction of the plate body 10 at the front end portion of the right side surface of the plate body 10. [ In this case, the second fixing rail 21 has a symmetrical structure with respect to the first fixing rail 20 with respect to the plate body 10.

The first bulb rail 30 of the sub-wall unit 100 protrudes in the vertical direction of the left side surface on the left side surface of the rear end of the plate body 10 and extends to the bulb of the sub-wall unit (specifically, the plate body 10) Or when the submergible plate 100 is further provided with a bulb plate 200 to be described later, the bulb plate 200 functions to be erected and fixed on the first lower rail 42.

According to a preferred embodiment, the first bulb rail 30 may be composed of a rod-like vertical member continuously protruding along the height direction of the plate body 10 at the left side rear end of the plate body 10. [ In this case, the first bulb rails 30 are parallel to and opposed to the first fixing rails 20.

The second bulb rail 31 of the sub-wall unit 100 protrudes in the vertical direction of the right side surface on the right side surface of the rear end of the plate body 10 and functions as a bulb of the sub-wall unit (specifically, the plate body 10) Or the bulb unit 100 is further provided with a bulb plate 200 to be described later, the bulb plate 200 functions to be erected and fixed on the second lower rail 43.

According to a preferred embodiment, the second bulb rail 31 may be composed of a rod-like vertical member continuously protruding along the height direction of the plate body 10 at the rear end of the right side surface of the plate body 10. [ In this case, the second bulb rails 31 are parallel to and opposed to the second fixing rails 21.

On the other hand, the first and second bulb rails 30 and 31 mean the bulb of the sub-wall unit 100 as described above. When the soil pressure is applied to the wall 400 and the soil pressure exceeds the conduction resistance of the retaining wall, the retaining wall can be conducted. In the sub-wall unit 100 of the present invention, the contact areas with the earth and sand are increased by the first and second bulb rails 30 and 31 in the direction perpendicular to the tsunami pressure direction, 31 function as a shear force against the earth pressure applied to the wall 400, thereby increasing the conductive resistance of the retaining wall.

For example, the first and second bulb rails 30 and 31 of the present invention or the bulbous plate 200 to be described later are similar to the earth anchor in which the steel wire is embedded into the gravel and then hardened with mortar to increase the pulling resistance. That is, since the plate 10 of the present invention corresponds to the embedded steel wire of the earth anchor and the first and second bulb rails can correspond to the mortar of the earth anchor, the conduction resistance can be increased without injecting additional mortar or the like .

 The effect of such a bulb can be maximized when the first and second bulb rails 30 and 31 are provided with a bulb plate 200 to be described later. A detailed description thereof will be given later.

The first upper rail 40 of the sub-wall unit 100 protrudes in a direction perpendicular to the left side on the left side of the upper end of the plate 10, When the upper region is inserted into the first upper gap 22, the flow of the first fitting portion 420 in the forward and backward directions is limited together with the first fixing rail 20, And the vertical movement of the wall 400 is limited by the weight of the wall 400 so that the wall 400 can be fixed on the bottom plate 300 and fixed.

The first upper rail 40 of the sub-wall unit (first sub-wall unit) is coupled to the first lower rail 42 of another sub-wall unit (second sub-wall unit) So that the sub-wall units can be interconnected and fixed in the height direction of the retaining wall.

According to a preferred embodiment of the present invention, a plurality of fastening holes 50 are formed in the first upper rail 40 and a plurality of fastening holes 50 are formed in the first lower rail 42, The first upper rail 40 of the first sub-wall unit and the first lower rail 42 of the second sub-wall unit can be coupled to each other through fasteners (e.g., bolts and nuts)

The second upper rail 41 of the sub-wall unit 100 is configured to protrude in the vertical direction of the right side surface on the upper right side surface of the plate body 10, The first and second fixing rails 21 and 21 are inserted into the gap 23 to limit the flow of the second fitting portion in the front and rear direction and restrict the lateral flow by the plate body 10, So that the wall 400 can be fixed on the bottom plate 300 and fixed.

In addition, the second upper rail 41 of the first sub-wall unit is coupled to the second lower rail 43 of the second sub-wall unit in an opposed structure so that the first sub-wall unit and the second sub- And can be fixed.

According to a preferred embodiment, a plurality of fastening holes 50 are formed in the second upper rail 41, and a plurality of fastening holes 50 are formed in the second lower rail 43, The second upper rail 41 of the first sub-wall unit and the second lower rail 43 of the second sub-wall unit can be coupled to each other through fasteners (for example, bolts and nuts)

The first lower rail 42 of the sub-wall unit 100 is configured to protrude from the left side of the lower end of the plate 10 in a direction perpendicular to the left side of the first body 420, When the lower region is inserted into the first lower gap 24, the flow direction of the first fitting portion 420 is limited together with the first fixing rail 20, and the flow in the lateral direction is restricted by the plate body 10 And the vertical flow is limited by the self weight of the wall 400, so that the wall 400 functions to stand and be fixed on the bottom plate 300.

The first lower rail 42 of the sub-wall unit 100 is coupled to the first upper rail 40 of another sub-wall unit in an opposed structure so that the plurality of sub-wall units 100 can be assembled do.

The second lower rail 43 of the sub-wall unit 100 is formed so as to protrude in the vertical direction of the right side surface on the right side surface of the lower end portion of the plate body 10 such that the lower region of the second fitting portion of the wall body 400, The first and second fixation rails 21 and 21 are inserted into the gap 25 to restrict the forward and backward flow of the second fitting portion and restrict the flow in the lateral direction by the plate body 10, Thereby restricting the upward and downward flow so that the wall 400 can be erected and fixed on the bottom plate 300.

The second lower rail 43 of the sub-wall unit 100 is opposed to the second upper rail 41 of another sub-wall unit so that the plurality of sub-wall units 100 can be assembled do.

The first upper clearance 22 of the sub-wall unit 100 refers to the spacing space formed between the first fixation rail 20 and the first upper rail 40. That is, one end of the first upper rail 40 is positioned at a predetermined distance from the first fixing rail 20 so that the distance between one end of the first upper rail 40 and the first fixing rail 20 An empty space of the groove structure is provided.

The first upper gap 22 is configured such that an upper region of the first fitting portion 420 of the wall 400 can be inserted. Therefore, it is preferable that the cross-sectional shape of the first upper gap 22 is formed in the same shape as the cross-section of the first fitting portion 420.

The second upper gap 23 of the sub-wall unit 100 refers to a spacing space formed between the second fixing rail 21 and the second upper rail 41. That is, one end of the second upper rail 41 is positioned at a predetermined distance from the second fixing rail 21 so that one end of the second upper rail 41 and the other end of the second fixing rail 21 An empty space of the groove structure is provided.

The second upper gap 23 is formed so that the upper region of the second fitting portion of the wall 400 can be inserted. Therefore, it is preferable that the sectional shape of the second upper gap 23 is formed in the same shape as the end face of the second fitting portion.

According to a preferred embodiment, the sub-wall unit 100 is further configured to include a first lower gap 24 and a second lower gap 25.

The first lower spacing 24 refers to the spacing space formed between the first fixation rail 20 and the first lower rail 42. That is, one end of the first lower rail 42 is positioned at a predetermined distance from the first fixing rail 20, and thereby, between the first fixing rail 20 and one end of the first lower rail 42 An empty space of the groove structure is provided.

The first lower clearance 24 is formed such that a lower region of the first fitting portion 420 of the wall 400 can be inserted. Therefore, it is preferable that the cross-sectional shape of the first lower gap 24 is formed in the same shape as the cross-section of the first fitting portion 420.

The second lower gap 25 of the sub-wall unit 100 refers to a spacing space formed between the second fixing rail 21 and the second lower rail 43. That is, one end of the second lower rail 43 is located at a position spaced a predetermined distance from the second fixing rail 21, whereby the distance between one end of the second lower rail 43 and the second fixing rail 21 An empty space of the groove structure is provided.

The second lower gap 25 is configured such that a lower region of the second fitting portion of the wall 400 can be inserted. Therefore, it is preferable that the sectional shape of the second lower gap 25 is formed in the same shape as the end face of the second fitting portion.

According to the configuration described above, the first upper gap 22 is provided in a mutually opposing structure on the same straight line as the first lower gap 24, and the second upper gap 23 has a second lower gap 25 In a straight line.

The retaining wall submerged unit 100 of the present invention preferably includes a bulb plate 200, a third spacing 32 and a fourth spacing 33, more preferably a first seating recess 34, 2 seating grooves 35, engaging jaws 60, and engaging grooves 61. As shown in Fig.

The third spacing 32 of the sub-wall unit 100 refers to the spacing space formed between the first bulb rail 30 and the first upper rail 40. That is, the other end of the first upper rail 40 is positioned at a predetermined distance from the first bulb rail 30 so that the other end of the first upper rail 40 and the first bulb rail 30 An empty space of the groove structure is provided.

The third gap 32 is formed so that the right corners of the bulb plate 200 can be inserted and inserted. Therefore, the cross-sectional shape of the third gap 32 is preferably formed in the same shape as the cross-section of the right corner of the bulb plate 200.

The fourth spacing 33 of the sub-wall unit 100 refers to the spacing space formed between the second bulb rail 31 and the second upper rail 41. The other end of the second upper rail 41 is positioned at a predetermined distance from the second bulb rail 31 so that the other end of the second upper rail 41 and the second bulb rail 31 An empty space of the groove structure is provided.

The fourth spacing 33 is formed so that the left corner of the bulb plate 200 can be inserted. Therefore, it is preferable that the cross section of the fourth spacing 33 is formed in the same shape as the cross section of the left corner of the bulb plate 200.

The bulbous plate 200 of the sub-wall unit 100 may be formed of a plate-shaped member having a rectangular or square shape, and may be manufactured as a precast concrete block.

The bulb plate 200 is installed between a pair of mutually opposed sub-wall units (hereinafter referred to as first and second sub-wall units). Specifically, the right corners of the bulb plate 200 are drawn between the first and second sub-wall units via the third spacing 32 of the first sub-wall unit and are erected on the first lower rail 42, The left edge portion of the second sub-wall unit is drawn into the space between the first and third sub-wall units via the fourth spacing 33 of the second sub-wall unit and is erected on the second lower rail 43.

When the bulb plate 200 is inserted between the first and second sub-wall units as described above, the upper region of the right corners of the bulb plate 200 is inserted into the third gap 32 of the first sub-wall unit, And the upper region of the left corner portion is inserted into the fourth gap 33 of the second sub-wall unit.

Thus, the upper region of the right corners of the bulb plate 200 is restricted in the forward and backward flow by the first bulb rails 30 and the first upper rails 40 of the first sub-wall unit, and the upper region of the left- The forward and backward flow is limited by the second bulb rail 31 and the second upper rail 41 of the bipartite unit and the flow of the bulb plate 200 in the lateral direction is limited by the plate body 10, So that the bulb plate 200 can be fixed and fixed between the first sub-wall unit and the second sub-wall unit.

Such a bulbous plate 200 is provided at each rear end of each of the sub-wall units 100, whereby the retaining wall of the present invention is provided with a bulbous plate having a plurality of bulbous plates 200 formed therein.

Meanwhile, the bulb plate 200 may further include stepped grooves 210 and 211 at the lower left end and the lower right end, respectively. The stepped grooves 210 and 211 are assembled to the rear end of the first and second lower rails 42 and 43 or the first and second seating grooves 34 and 35 respectively when the bulb plate 200 is assembled to the sub- So that the bulb plate 200 can be more firmly fixed.

As described above, in the sub-wall unit 100 of the present invention, the first bulb rail 30 and the second bulb rail 31 function as bulbs. If the bulb plate 200 is further installed, (200) acts as a more effective bulb relative to the first and second bulb rails.

That is, the bulb plate 200 can secure more contact area than the first and second bulb rails 30 and 31. Here, the 'contact area' means an area in contact with the earth and sand in an orthogonal direction to the tsunamis direction. Accordingly, the bulb plate 200 can act as a shearing force against the pressure applied to the wall 400, and this shearing force is much larger than the shearing force by the first and second bulb rails 30 and 31 And it is possible to greatly enhance the ability of the retaining wall to resist conduction.

The first seating groove 34 of the sub-wall unit 100 is a recess formed on the upper side of the rear end of the first lower rail 42. The third seating 32 is provided between the adjacent pair of the sub- And receives and fixes the right lower end portion of the bulb plate 200 that is introduced through the through hole. Therefore, it is preferable that the first seating groove 34 is formed in the same shape as the lower right end of the bulb plate 200.

The second seating groove 35 of the sub-wall unit 100 is a recess formed on the upper side of the rear end of the second lower rail 43. The fourth seating 33 is provided between a pair of adjacent sub- And receives and fixes the lower left portion of the bulb plate 200 that is drawn through the bulb plate 200. Therefore, it is preferable that the second seating groove 35 is formed in the same shape as the lower left end of the bulb plate 200.

The latching protrusions 60 of the sub-wall unit 100 protrude along the longitudinal direction of the plate body 10 on the upper surface of the plate body 10 and the latching grooves 61 of the sub- And is formed in a concave grooved groove shape on the lower side of the frame.

The latching jaws 60 of the first sub-wall unit function as shear keys for suppressing the squeezing of the sub-wall unit 100 in the left-hand direction by being inserted into the latching grooves 61 of the second sub-wall unit assembled to the upper layer of the first sub- . Therefore, the engaging protrusion 60 and the engaging groove 61 are preferably formed in the same cross-sectional shape, and may have a cross-sectional shape such as a triangular shape, a semicircular shape, an elliptical shape, or a trapezoidal shape.

Hereinafter, the assembled retaining wall having the sub-wall unit of the present invention will be described in detail.

FIG. 4 is a perspective view of a bottom plate according to the present invention, FIG. 5 is a rear side perspective view of a wall according to the present invention, and FIG. 6 is a front side perspective view of a wall according to the present invention. Referring to Figs. 4-6, the prefabricated retaining wall of the present invention includes a bottom plate 300, a wall 400, and a sidewall.

The bottom plate 300 of the retaining wall is a plate-shaped structure that is supported on the bottom of the wall 400 and is seated on the ground. On the upper surface of the plate-like material 310, a locking protrusion 320, a plurality of fastening holes 330, And a connecting protrusion 350 protrudes from one side edge along the longitudinal direction and a connecting groove is recessed along the longitudinal direction at the other side edge portion.

The latching jaws 320 of the bottom plate 300 have the same function as the latching jaws of the sub-wall unit 100 and are inserted into the latching grooves 61 of the sub-wall unit 100 provided on the upper surface of the bottom plate 300 And functions as a push-button for suppressing the leaning of the sub-wall unit 100 in the left direction.

The fastening hole 330 of the bottom plate 300 is a means for fixing the sub-wall unit 100 on the bottom plate 300. The sub-wall unit 100 installed on the bottom plate 300 has a first lower portion And is installed on the bottom plate 300 through a fastening hole 50 of the rail 42 and the second lower rail 43 and a fastening hole which is inserted into the fastening hole of the bottom plate 300 through the fastening hole 50 Can be fixed.

The pushing jaws 340 of the bottom plate 300 protrude from the upper surface of the bottom plate 300 to function as a stopper to prevent the lower end of the wall 400 from being pushed by the earth pressure.

The connection protrusions 350 of the bottom plate 300 are inserted into the connection grooves of another bottom plate 300 disposed adjacent thereto and the plurality of bottom plates 300 are continuously connected in parallel So that one large bottom plate structure can be formed.

The wall 400 of the retaining wall is coupled to the sub-wall unit 100 through the fitting portions 420 and 421 formed along the height direction of the wall body 400,

As shown in FIG. 5, the wall 400 includes a first fitting part 420 bent in a '?' Cross-sectional shape at a left corner of the plate material 410 and a first fitting part 420 ' As shown in Fig.

In this case, the first fitting part 420 may be formed in a rail shape of a '┘' cross section which is formed continuously on the back surface of the left corner of the plate material 410 along the height direction of the plate material 410 , And the second fitting portion may be formed in the form of a rail of a "?" Cross-section continuously protruding along the height direction of the plate material 410 on the back surface of the right corner portion of the plate material 410.

The secondary walls of the present invention are formed by coupling the above-described sub-wall units 100 in the height direction of the retaining wall (i.e., the vertical direction of the bottom plate 300) The wall 400 is assembled to complete the retaining wall.

Hereinafter, the retaining wall construction process using the sub-wall unit 100 and the effect of the retaining wall thus completed will be described.

FIG. 7 is a perspective view showing an assembly structure of a bottom plate and a sub-wall unit according to the present invention, and FIG. 8 is a construction view of a single-layer building structure according to the present invention.

First, a plurality of bottom plates 300 are interconnected in a parallel structure, and a one-layer sub-wall unit 100 is installed on each bottom plate 300. Specifically, after the fastening holes 50 of the first and second lower rails 42 and 43 of the single-layer sub-wall unit 100 are positioned corresponding to the fastening holes 330 on the upper surface of the bottom plate 300, The single-layer sub-wall unit can be assembled and fixed on the bottom plate 300 by inserting fasteners such as bolts into the grooves 50,

In this manner, by installing one single-layer sub-wall unit 100 on each bottom plate 300, an assembly structure as shown in FIG. 7 is formed.

Once the bottom plate 300 and the one-storey sub-wall unit 100 have been installed, the one-storey building structure of the retaining wall is completed by assembling the wall 400 to each one-storey sub-wall unit 100. Specifically, the first fitting portion 420 of the wall 400 is positioned on the first upper gap 22 of the first-layer first sub-wall unit, and the second fitting portion 421 is positioned on the first upper- Is positioned on the second upper gap (23), and then slidingly inserted in the vertical downward direction. Here, the one-storey second sub-wall unit refers to another one-storey sub-wall unit adjacent to the one-storey first sub-wall unit.

When the sliding insertion of the wall 400 is completed, the first fitting portion 420 of the wall body 400 is inserted into the first fixing rail 20, the first upper rail 40 and the first lower portion of the first- And the second fitting portion is restricted by the second fixing rail 21, the second upper rail 41 and the second lower rail 43 of the one-layer second sub-wall unit, So that the wall 400 can be assembled and fixed to the sub-wall unit.

In this manner, if one wall 400 is installed between neighboring one-storey sub-wall units 100, a single-storey building structure as shown in FIG. 8 is completed.

On the other hand, when the height of the retaining wall to be installed is high or it is necessary to reinforce the conduction resistance of the retaining wall, the bulb plate 200 can be further installed.

FIG. 9 is a view showing a state in which a bulbous plate is further installed on the one-layered structure of FIG. 8. FIG. As shown in FIG. 9, the bulb plate 200 can be assembled by placing both side edges thereof on the third and fourth spacings 32 and 33, respectively, and then slidably inserting the bulges in the vertical downward direction.

The upper region of the right corner of the bulb plate 200 is inserted into the third spacing 32 and is guided by the first bulb rail 30 and the first upper rail 40 The upper region of the left corner portion is inserted into the fourth spacing 33 to restrict the flow by the second bulb rail 31 and the second upper rail 41 and the lower end portion of the first and second lower rails 31, And can be assembled and fixed to the sub-wall unit by being supported by the supporting members 42 and 43.

When the one-storied building structure is completed, a two-storey building structure is mounted on the one-storied building structure. The two-storey building structure is the same as that of the one-story building structure.

FIG. 10 is a view showing a state in which a two-story sub-wall unit is further installed in the single-story building structure of FIG. 9, and FIG. 11 is a construction view of a two-story building structure provided with a wall body 400 and a bulbous plate in FIG.

10 and 11, the two-layer first sub-wall unit 100 'is positioned on the first-layer first sub-wall unit 100, and then the first and second sub-wall units 100' are coupled with each other through bolts or the like through the respective coupling holes 50, The two-layer second sub-wall unit 100 'is positioned on the first-layer second sub-wall unit 100, and then the two second sub-wall units 100' are connected to each other through bolts or the like through the respective coupling holes 50, N sub-wall units 100 'of two layers are placed on the substrate 100 and then bonded to each other.

According to the above-described assembly method, the assembly of the two-layer sub-wall units 100 'is completed, and a plurality of sub-walls 500 consisting of the one-layer sub-wall unit 100 and the two- Two-layered building structure spaced apart is constructed.

In the same manner as the method of assembling the wall 400 and the bulb plate 200 of the one-storey building structure, the walls 400 'are formed between adjacent two-storey sub-wall units 100' And the bulb plate 200 'are assembled one by one to complete the two-layer assembly structure shown in FIG.

When the three-layer, four-layer, ..., n-layer assembly structure is installed in the above-described manner, the retaining wall construction including a plurality of layer assembly structures as shown in FIG. 12 is finally completed.

According to a preferred embodiment, the one-walled sub-wall unit, the two-walled sub-wall unit, ..., the n-walled sub-wall unit constituting the retaining wall of the present invention can be configured as follows.

Figure 13 is a rear side perspective view of the prefabricated retaining wall according to the present invention. Referring to FIG. 13, the sub-wall 500 of the present invention may be composed of sub-wall units having different widths L1, L2, and L3 of the plate 10. In this case, the secondary wall 500 includes a backward gradient region R1. Here, the 'backward gradient region (R1)' refers to a region having a reverse gradient structure in which the size increases from the lower end to the upper end, such as a substantially inverted triangle, of the entire area of the secondary sidewall.

The sub-wall unit forming the backward gradient region R1 is constructed as follows. That is, the horizontal length L1 of the lowermost sub-wall unit (the one-storey sub-wall unit in FIG. 13, hereinafter referred to as the sub-wall unit a 100) And the transverse length L2 of the sub-wall unit b 100 'is formed to be shorter than the transverse length L2 of the upper-layer sub-wall unit (the three-layer sub-wall unit in Fig. 13, ''), So that the sub-wall region made up of the sub-wall units a, b, c (100, 100 ', 100 ") has a reverse gradient structure as described above. The long and short widths of the sub-wall units 100, 100 'and 100' 'may be based on the lateral lengths L1, L2 and L3 of the plate bodies 10 of the respective sub- The length L1 corresponds to the length of the plate body 10 in the first direction, the length in the second direction and the length in the height direction correspond to the direction perpendicular to the wall body 400.

As a result, the sub-wall 500 of the present invention can be configured so that the sub-wall unit of the (n + 1) -th layer includes the sub-wall area where the width of the plate 10 is longer than the sub- Here, the sub-wall unit in the 'n + 1' layer refers to a sub-wall unit coupled to the top of the sub-wall unit of the n-th layer (i.e., the first and second upper rails 40 and 41).

 The at least one sub-wall unit 100 of the entire area of the sub-wall may have a width greater than the transverse length of the plate body 10 than the two-wall sub-wall unit 100 ' Can be formed shorter.

For the reference, in the case of the negative wall in the embodiment of FIG. 13, it is configured to have the reverse gradient region R1 from the lower end to approximately the midpoint, and to have the regular edge region R2 (i.e., Respectively.

In the case of constructing the secondary wall 500 by assembling a plurality of sub-wall units, if the above-described backward gradient region R1 is designed, it is possible to significantly reduce the amount of turf wave for constructing the retaining wall, that is, The structural stability can be increased. A detailed description thereof will be given later.

Hereinafter, characteristic effects of only the prefabricated retaining wall according to the present invention with respect to the conventional prefabricated retaining wall will be described.

First, the retaining wall of the present invention can significantly increase the soil contact area in the direction perpendicular to the soil pressure direction by the bulb plate 200 or the first and second bulb rails 30, 31 of the sub-wall unit 100, Particularly, the bulb plate 200 can act as a shear force to resist the pressure applied to the wall 400, thereby greatly enhancing the conduction resistance of the retaining wall.

Next, according to the granular retaining wall according to the present invention, it is possible to remarkably reduce the amount of terra cotta for constructing the retaining wall, and the structural stability of the retaining wall compared with the conventional one.

This will be described in detail as follows. FIG. 14 is a sectional view showing a construction and a tearing machine of a retaining wall in the prior art, and FIG. 15 is a sectional view showing a construction and a tearing machine of the building retaining wall according to the present invention.

As shown in FIG. 14, the conventional wall retaining wall is generally designed to have a rectangular triangular structure in which the cross-sectional area of the sub-wall 3 decreases from the lower end to the upper end. In case of the trowel for constructing the retaining wall, it is necessary to form the slope slope K1 from the point S1 located about 1 m from the inner edge of the bottom plate 5 and to perform the trowel P1 to securely construct the trowel. However, if the building 1 exists on the sloping surface in forming the slope slope K1, it is impossible to construct the retaining wall due to the impossibility of the trowel P1. To solve this problem, There has been a problem that the costs are increased sharply when additional measures are taken for the reinforcement measures or the facilities.

However, since the secondary wall of the present invention is capable of the above-described reverse gradient structure R1, the lateral length B2 of the bottom plate 300 can be substantially reduced compared to the width B1 of the bottom wall of the conventional retaining wall, It is possible to form the starting point S2 of the second wall K2 at a position closer to the wall 400 than the starting point S1 of the conventional retaining wall. Accordingly, it is possible to largely reduce the total amount of terra cotta to the retaining wall (refer to P1 and P2 in Figs. 14 and 15), and furthermore, when the retaining wall installation site is close to the building, However, in the case of the present invention, it is possible to form a slope slope K2 at a point deviating from the building, and the construction and response of the retaining wall can be improved.

On the other hand, the main factor of the force acting on the retaining wall is the main dynamic pressure, which is concentrated in the area of about 1/3 to 1/2 of the wall height at the bottom of the wall 400. Therefore, in designing the wall supporting the retaining wall, it is preferable that the sub wall is composed of the backward gradient structure R1 from approximately 1/3 to 1/2 point from the lower end of the wall body 400 in terms of the conductive resistance and structural stability of the retaining wall. . This is because, when the sub-wall is designed with the above-described reverse-gradient structure, the center of gravity of the entire sub-wall of the conventional tread structure (i.e., the right triangle structure) (Particularly, the main dynamic pressure) can be improved.

However, in the case of a conventional sub-wall, it is manufactured by pouring concrete. Thus, there is a limit in which it is impossible to form the sub-wall in a reverse gradient structure.

On the other hand, the retaining wall of the present invention selectively assembles the sub-wall units 100, 100 ', and 100' 'having different widths, It is possible to design the secondary wall 500 of the retaining wall R1, thereby maximizing the conduction resistance and structural stability of the retaining wall.

Although the wall 400 of the embodiment of FIG. 5 has been described and illustrated as being coupled to the sub-wall unit 100 through the first and second fitting portions 420 and 421 formed at the left and right corners, 420 and 421 may be formed along the height direction at the center of the wall body 400 to achieve the same purpose.

That is, as in the modified embodiment of FIG. 16, the first fitting portion 420a is formed in a rail shape bent in a "?" Sectional shape, and the second fitting portion 421a is formed in a rail shape bent in a " And the first and second fitting parts 420a and 421a may be spaced apart from each other in a symmetrical structure at the center of the back surface of the wall body 400a.

In this case, the first fitting portion 420a is inserted and fixed in the first upper gap 22 and the first lower gap 24 of the sub-wall unit 100, respectively, and the second fitting portion 421a is fixed to the sub-wall unit 100 The second upper gap 23 and the second lower gap 25 are inserted and fixed, respectively.

As another modified embodiment, the walls 400b, b 'may be formed in a box-like structure as shown in Fig. 17 or Fig. That is, the walls 400b and b 'are folded inwardly from the front plate 410b of the plate material and both side edges of the front plate 410b to the inside of the front plate 410b to form a first fitting part 420b , b ') and the second fitting portion 421b (b'), thereby constituting a box-like structure as a whole. In this case, the first fitting portion 420b, b 'and the second fitting portion 421b, b' are formed by bending one of the two-step bending portions at a bending angle other than a right angle to the front plate 410b, The front plate 410b, the first engaging portions 420b and b ', and the second engaging portions 421b and b' may be formed to have a generally trapezoidal or inverted trapezoidal cross-sectional shape.

When the walls 400b and b 'are configured to have a box-like structure and have a cross-sectional shape of a trapezoid or an inverted trapezoid, the curved retaining wall structure can be constructed as shown in FIG. 19, It is possible to flexibly cope with the problem.

While the preferred embodiments of the present invention have been described and illustrated above using specific terms, such terms are used only for the purpose of clarifying the invention, and it is to be understood that the embodiment It will be obvious that various changes and modifications can be made without departing from the spirit and scope of the invention. Such modified embodiments should not be understood individually from the spirit and scope of the present invention, but should be regarded as being within the scope of the claims of the present invention.

10: plate body 20: first fixing rail
21: second fixing rail 22: first upper gap
23: second upper gap 24: first lower gap
25: second lower gap 30: first bulb rail
31: second bulb rail 32: third separation
33: fourth separation 34: first seating groove
35: second seating groove 40: first upper rail
41: second upper rail 42: first lower rail
43: second lower rail 50: fastening hole
60: latching jaw 61: latching groove
100: sub-wall unit 200: bulb plate
300: bottom plate 400: wall
420: First fitting part 421: Second fitting part
500: secondary wall

Claims (11)

A sub-wall unit constituting a sub-wall supporting a retaining wall,
Sheet body;
A first fixing rail protruding from a left side of a front end of the plate body along a height direction of the plate body;
A second fixing rail protruding from the right side of the front end of the plate body along a height direction of the plate body;
A first bulb rail protruding from a left side of a rear end of the plate body along a height direction of the plate body;
A second bulb rail protruding along a height direction of the plate body on a right side surface of a rear end of the plate body;
A first upper rail protruding from a left side of an upper end of the plate along a longitudinal direction of the plate;
A second upper rail protruding from the upper right side surface of the plate body along the longitudinal direction of the plate body;
A first lower rail protruding along a longitudinal direction of the plate body on a left side surface of a lower end of the plate body;
A second lower rail protruding from the right side of the lower end of the plate along the longitudinal direction of the plate;
A first upper gap formed between one end of the first upper rail and the first fixing rail; And
And a second upper gap formed between one end of the second upper rail and the second fixing rail.
The method according to claim 1,
A third spacing formed between the other end of the first upper rail and the first bulb rail;
A fourth spacing formed between the other end of the second upper rail and the second bulb rail; And
An upper region of one side edge portion is inserted in the third gap to restrict flow by the first and second upper rails and a bulb plate that is erected on the first lower rail and acts as a bulb of the sub- Further comprising a plurality of retaining walls for retaining walls.
The method according to claim 1,
A first lower gap is formed between one end of the first lower rail and the first fixing rail,
And a second lower gap is formed between one end of the second lower rail and the second fixing rail.
3. The method of claim 2,
And a first seating groove is formed at a rear end of the first lower rail for seating and fixing the right lower end of the bulb plate.
The method according to claim 1,
Wherein the first and second upper rails and the first and second lower rails are formed with a plurality of fastening holes.
Bottom plate; A wall mounted on the bottom plate; And a retaining wall which is erected on the bottom plate and supports the wall,
The subwall is formed by connecting a plurality of sub-wall units in a height direction of the retaining wall,
The sub-
Sheet body; A first fixing rail protruding from a left side of a front end of the plate body along a height direction of the plate body; A second fixing rail protruding from the right side of the front end of the plate body along a height direction of the plate body; A first bulb rail protruding from a left side of a rear end of the plate body along a height direction of the plate body; A second bulb rail protruding along a height direction of the plate body on a right side surface of a rear end of the plate body; A first upper rail protruding from a left side of an upper end of the plate along a longitudinal direction of the plate; A second upper rail protruding from the upper right side surface of the plate body along the longitudinal direction of the plate body; A first lower rail protruding along a longitudinal direction of the plate body on a left side surface of a lower end of the plate body; A second lower rail protruding from the right side of the lower end of the plate along the longitudinal direction of the plate; A first upper gap formed between one end of the first upper rail and the first fixing rail; And a second upper gap formed between one end of the second upper rail and the second fixing rail.
The method according to claim 6,
A third spacing formed between the other end of the first upper rail and the first bulb rail;
A fourth spacing formed between the other end of the second upper rail and the second bulb rail; And
An upper region of one side edge portion is inserted in the third gap to restrict flow by the first and second upper rails and a bulb plate that is erected on the first lower rail and acts as a bulb of the sub- Further comprising a plurality of resilient retaining walls.
The method according to claim 6,
Wherein the plurality of sub-wall units include a plurality of sub-wall units having different widths of the plate bodies,
The sidewall including a reverse gradient region,
Wherein the backward gradient region includes a subwall region in which the width of the n + 1-layer sub-wall unit is longer than the width of the sub-wall unit in the n-layer, among the entire area of the sub-wall.
9. The method of claim 8,
Wherein said 'n' comprises at least '1'.
The method according to claim 6,
A first lower gap formed between one end of the first lower rail and the first fixing rail; A second lower gap formed between one end of the second lower rail and the second fixing rail; A first fitting portion formed on the back surface of the wall along a height direction of the wall; And a second fitting portion formed on the back surface of the wall body so as to be symmetrical with the first fitting portion,
Wherein the first fitting portion has an upper region inserted into the first upper gap to restrict flow by the first fixing rail and the first upper rail and the lower region is inserted into the first lower gap, And the first lower rail. ≪ Desc / Clms Page number 13 >
11. The method of claim 10,
Wherein the wall comprises:
Front plate; The first fitting portion being bent at two sides from the one side edge portion of the front plate to the inside of the front plate; And the second fitting portion bent in two steps from the other corner portion of the front plate to the inside of the front plate,
Wherein the first fitting portion and the second fitting portion are bent in an acute angle or obtuse angle structure in which one of the two-step bending is not perpendicular to the front plate so that the front plate, the first fitting portion, Characterized in that the part is configured to have a trapezoidal or inverted trapezoidal cross-sectional shape as a whole.

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