KR102522826B1 - A block-type reinforced earth retaining wall method that uses grid reinforcement and steel rods and can be installed in a variety of ways - Google Patents

Abstract

The present invention relates to a block-type reinforced soil retaining wall construction method in which grids and steel rods are used and various installations are possible. The same or different numbers of steel rods and grids are installed continuously, respectively, so that various installation types can be realized. It is very resistant to dynamic loads caused by earthquakes and vibrations by backfilling of aggregate laying and auxiliary blocks supporting steel rods, making it possible to build a reinforced soil retaining wall. It relates to a block-type reinforced soil retaining wall construction method in which various installations are possible, using a grid and steel rods that firmly support and allow the steel rods to be more securely fastened with the supporting steel rods through a connecting member.

Description

A block-type reinforced earth retaining wall method that uses grid reinforcement and steel rods and can be installed in a variety of ways}

According to the present invention, the grid and the steel rods can be installed in the form of forming various combinations of stages according to various embodiments of the user, and the steel rods used can be more securely fastened to each other through a connecting member, and at the same time, the steel rods and Using a grid, it is possible to prevent the displacement of the reinforced soil retaining wall over a long period of time, and it is very strong against dynamic loads caused by earthquakes and vibrations by the backfilling of the aggregate installation and the auxiliary block supporting the steel bar, so that the reinforced soil retaining wall can be firmly supported. It is about a block-type reinforced soil retaining wall construction method in which grids and steel bars are used and various installations are possible.

In general, a retaining wall refers to a structure that resists soil pressure and prevents soil from collapsing, and is defined as a wall that holds materials on one side of the wall to maintain a difference in elevation. The surrounding slopes, road and rail slopes, buildings and terraced walls all present potential loads on the retaining wall. Retaining walls are mainly divided into three types: gravity type, cantilever type, and reinforced earth retaining wall. A "gravity retaining wall" is a type of retaining wall without reinforced soil that bears the load of the soil trapped by the weight of the blocks alone. In the case of a gravity retaining wall, each block is composed of concrete or stone mass, so the construction cost is higher. Gravity retaining walls rely on the weight of the structure to withstand earth pressure.

Excavation of soil on the back of a retaining wall does not affect the structural strength of the retaining wall. Cantilevered retaining walls typically have a structure of pile piles cast into the soil, and obtain bearing capacity from resistance to rotation of the pile piles under the soil on which they are supported. A cantilever retaining wall has a horizontal base section buried under the backfill, and the backfill soil has a vertically extending stem section permanently connected to the base to form the wall. Cantilevered retaining walls rely on the weight of backfill at their base to prevent the wall from tilting.

The condition that a retaining wall must have is that it must be able to withstand the superstructure and earth pressure sufficiently, and it must be durable, easy to secure materials, and simple to construct. Widely used embankments generally meet these requirements, but earth pressure and water pressure Reinforced concrete retaining walls, which have excellent stability and durability, have been replaced when constructing important structures due to their low ability to resist damage.

In the case of the above concrete retaining wall, it is currently the most commonly used structure, but there is a shortage of professional skilled manpower in the construction market and the resulting increase in labor costs, difficulty in quality control for cast-in-place concrete, and structural weakness and construction cost when the height of the retaining wall increases A lot of problems, such as rising, were exposed.

Republic of Korea Patent Registration No. 10-1218174

Therefore, the present invention has been devised to solve the above conventional problems, and an object of the present invention is to alternately install the steel rods and grids as the number desired by the user, so that they can be installed in various ways according to the preset installation ratio between them However, the steel rods used are made possible for more reliable fastening through separate connecting members.

In addition, by using steel rods and grids in multiple stages, it is possible to prevent the reinforcement soil retaining wall from being displaced over a long period of time, and it is very resistant to dynamic loads caused by earthquakes and vibrations due to the backfilling of aggregate installation and the auxiliary block supporting the steel bars. Grids and steel bars are used to firmly support the retaining wall, and the purpose is to provide a block-type reinforced soil retaining wall construction method that can be installed in various ways.

In order to achieve the above object, the present invention is a block-type reinforced soil retaining wall construction method,

Stacking a plurality of reinforced earth retaining wall blocks 10 arranged in a row on the front surface where the foundation is formed in multiple stages (S100);

After mounting the reinforced soil retaining wall block 10 in the multi-stage stacking step (S100) of the reinforced soil retaining wall block 10, laying and compacting the embankment 20 on the rear surface of the reinforced soil retaining wall block 10 (S200) ;

In the step of laying and compacting the embankment 20 (S200), laying and compacting the embankment 20 on the rear surface according to the multi-stage of the reinforcing soil retaining wall block 10 (S300);

In the step of compacting the embankment 20 according to the multi-stage of the reinforced soil retaining wall block 10 (S300), the steel bar layer 40 with the steel bar 40a installed between the multi-stage or the grid layer with the grid 30a installed ( 30) are sequentially installed without overlapping each other (S400);

After the compaction step of laying the embankment 20 (S300), installing and finishing the finishing block 50 on the upper surface of the installed reinforced earth retaining wall block 10 (S500); It is configured to include,

In the step (S400) of sequentially installing the steel bar layer 40 with the steel bar 40a or the grid layer 30 with the grid 30a installed without overlapping each other, the steel bar 40a and the grid 30a are The number of each consecutively installed is preset, and each is installed in succession according to the preset number, and is installed in a form of alternating with each other,

In the steel bar installation step (S400), the first support steel bar 41 is inserted into the coupling groove 11 formed on one side of the reinforced soil retaining wall block 10 to support the reinforced soil retaining wall block 10 in which a plurality of reinforcing soil retaining wall blocks 10 are arranged in a row. Step (S410), step (S420) of connecting a plurality of connecting steel bars 42 spaced apart from each other in the longitudinal direction of the first support steel bar 41 and connected at right angles to the first support steel bar 41, and the connecting steel bar An auxiliary block 43 is provided at the end of the 42 to be connected to the connecting steel bar 42, and the first supporting steel bar 41 It is configured to include a step of supporting (S430) and connecting and supporting a plurality of auxiliary blocks 43 installed according to the connecting steel bar 42 by the second supporting steel bar 44 (S440),

An insertion groove 45 is formed on one surface of the auxiliary block 43 so that the connecting steel bar 42 and the second support steel bar 44 are connected, and the insertion groove 45 is formed in a "T" shape to form a horizontal portion. The second support steel bar 44 is inserted and connected to the other auxiliary block 43, and the connecting steel bar 42 is inserted in the vertical portion,

The horizontal part of the insertion groove 45 is dug relatively deeper than the vertical part, so that the depth of depression between them is different,

One end of the connecting steel bar 42 is mutually fastened by the first support steel bar 41 and the connecting member 60,

The connecting member 60 is

a vertical cylindrical body (61);

A first perforated hole 62 through which the connecting steel rod 42 passes through the upper end of the outer circumference of the body 61;

a second drilling hole 63 drilled at the lower end of the outer circumference of the body 61 in a direction crossing the first drilling hole 62 so that the first support rod 41 passes therethrough;

A fixing member 64 that is detachably fastened to one end of the connecting steel bar 42 discharged to the outside through the first perforated hole 62 to prevent the connecting steel bar 42 from being separated from the connecting member 60 ;

It is characterized by consisting of.

As described above, the present invention has an effect that allows the grid and the steel bar to be installed at various ratios of the number of installations while installing the desired number of grids and steel rods, respectively.

In addition, the present invention has the effect of more reliably and easily fixedly connecting the first and second steel rods connected to both ends of the connecting steel rod in a cross-shaped manner through the auxiliary block and the connecting member.

In addition, the present invention can prevent the displacement of the reinforced soil retaining wall over a long period of time by using steel rods and grids in multiple stages, and is very resistant to dynamic loads due to earthquakes and vibrations by backfilling of aggregate installation and auxiliary blocks supporting steel rods. Reinforced soil has the effect of firmly supporting the retaining wall.

1 is a cross-sectional view showing a block-type reinforced soil retaining wall construction method according to an embodiment of the present invention.
2 is a plan view showing a block-type reinforced soil retaining wall construction method in which a grid is installed according to an embodiment of the present invention.
3 is a plan view showing a block-type reinforced soil retaining wall construction method in which steel rods are installed according to an embodiment of the present invention.
Figure 4 is a view of one embodiment showing a connecting steel bar according to the present invention.
5 is a schematic diagram showing a block according to an embodiment of the present invention;
6 is a connection state diagram showing a connection structure of components according to an embodiment of the present invention.
7 is a flow chart showing a block-type reinforced soil retaining wall construction method according to an embodiment of the present invention.
Figure 8 is a flow chart showing the installation method of the steel bar according to an embodiment of the present invention.

Before describing various embodiments of the present invention in detail, it will be appreciated that the application is not limited to the details of the configuration and arrangement of components described in the following detailed description or shown in the drawings. The invention is capable of being implemented and practiced in other embodiments and of being carried out in various ways. Also, device or element orientation (e.g., "front", "back", "up", "down", "top", "bottom") The expressions and predicates used herein with respect to terms such as ", "left", "right", "lateral", etc. are only used to simplify the description of the present invention and related devices. Or it will be appreciated that it does not indicate or imply that an element simply must have a particular orientation. Also, terms such as “first” and “second” are used herein and in the appended claims for descriptive purposes and are not intended to indicate or imply relative significance or significance.

The present invention has the following features to achieve the above object.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in this specification and claims should not be construed as being limited to the usual or dictionary meaning, and the inventor appropriately uses the concept of the term in order to explain his/her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, since the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, various alternatives may be used at the time of this application. It should be understood that there may be equivalents and variations.

As shown in FIGS. 1 to 8, the block-type reinforced soil retaining wall method in which the grid and steel rods of the present invention are used and various installations are possible is the strength method of suppressing displacement of the block, which is an advantage of the steel bar (strip) type reinforced soil retaining wall, and the soil It is constructed using only the strong construction method of the geogrid reinforced soil retaining wall that shares the earth pressure with the frictional resistance of the grid and the grid, and the road surface is excavated using equipment such as a fork crane and a rolling machine at the location where the reinforced soil retaining wall block (10) is to be installed After forming the foundation by laying mixed rubble on it, the reinforced earth retaining wall block 10 is mounted in multiple stages on the front part of the road surface (S100). First, only one stage of the reinforced earth retaining wall block 10 is mounted.

Here, the inside of the reinforced soil retaining wall block 10 mounted in one stage is filled with earth stone (not shown), and a load is applied to the reinforced soil retaining wall block 10 to fix it to the road surface, and the rear surface of the reinforced soil retaining wall block 10 After installing the nonwoven fabric, a perforated pipe (not shown) for drainage is further installed on the upper surface of the nonwoven fabric.

Then, the embankment 20 is laid and compacted using equipment on the rear surface of the reinforcing soil retaining wall block 10 mounted in one stage (S200). At this time, between the reinforcing soil retaining wall block 10 and the embankment 20 Drainage becomes smooth by backfilling the aggregate 21 by laying. In addition, the backfill due to the laying of the aggregate 21 is filled between the embankment 20 and the reinforced earth retaining wall block 10 whenever the reinforced earth retaining wall block 10 is mounted in multiple stages.

Here, the embankment 20 is laid and compacted, and the embankment 20 is laid and compacted on the rear surface in line with the multiple stages of the reinforcing earth retaining wall block 10. (S300)

In addition, another reinforced soil retaining wall block 10 is mounted on top of the reinforced soil retaining wall block 10 mounted in one stage. At this time, the reinforced soil retaining wall blocks 10 are stacked with upper and lower portions alternately stacked.

Then, the laying of the embankment 20 is compacted according to the multiple stages of the reinforcing soil retaining wall block 10, and at this time, the steel rods 40a or grids 30a are sequentially installed between the multiple stages without overlapping each other. (S400)

Here, the method in which the steel rods 40a or the grid 30a are sequentially installed without overlapping each other is as shown in FIG. 1, first, the grid 30a is installed at the upper end of the And, the steel bar 40a is installed on the upper end of the next reinforcement soil retaining wall block 10 and the embankment 20, and the next grid 30a is installed on the upper end of the reinforcement soil retaining wall block 10 and the embankment 20 regardless of the installation order (grid 30a - steel bar 40a - grid 30a - steel bar 40a or steel bar 40a - grid 30a - steel bar 40a - grid 30a) It is installed staggered.
As shown in FIG. 1, the layer with the grid 30a becomes the grid layer 30, and the layer with the steel bars 40a becomes the steel bar layer 40, and the two grid layers 30 and the steel bar layer 40 ) 1 may be alternately and repeatedly formed, or two steel bar layers 40 and one grid layer 30 may be alternately and repeatedly formed.

In addition, in the case of this installation sequence, the steel rods 40a and the grid 30a are installed in an alternating manner, but may have a form in which they are installed alternately according to a preset installation number ratio (steel rods 40a and The number of grids 30a, each of which is continuously installed, is preset, and each of the preset numbers is continuously installed, and installed in a form of alternating with each other), in one embodiment, the steel rods 40a and the grid 30a are preset In addition to 1:1, the ratio of the number of installations is 3:1 (grid 30a - grid 30a - grid 30a - steel bar 40a), and the grid 30a and steel bar 40a are alternately installed. Form installed while forming), 1:2 (grid 30a - steel bar 40a - steel bar 40a being installed repeatedly in the order, grid 30a and steel bar 40a are installed alternately) With the installation number ratio, it can be installed alternately with each other. That is, the steel bar 40a and the grid 30a may be installed continuously in the same or different numbers, respectively.

In addition, the steel bars 40a and the grid 30a are installed between the second and third stages of the reinforced soil retaining wall block 10 to prevent displacement (distortion, deformation) of the retaining wall.

In this way, after mounting the reinforced soil retaining wall block 10 in multiple stages to the desired height through the above operation, referring to FIG. Install, and finish the installation location and surroundings. (S600)

On the other hand, in the step (S400) of sequentially installing the steel bar layer 40 with the steel bar 40a installed or the grid layer 30 with the grid 30a installed between the multi-stages without overlapping each other, first, the Looking at the installation method of the grid 30a, as shown in FIG. 2, it is provided on the upper surface of the reinforced earth retaining wall block 10 and is formed long to the upper surface of the embankment 20, and the perforations of the grid 30a are reinforced earth retaining wall blocks ( 10) is fixed without moving in various directions while being caught by the coupling groove 11 and the coupling protrusion 12 formed on the upper surface.

And, in the above state, the reinforced soil retaining wall block 10 and the embankment 20 are provided on top of the grid 30a.

In addition, looking at the installation method of the steel bar 40a, as shown in FIGS. 3 to 5, first, a coupling groove 11 is formed on one surface (upper surface) of the reinforced soil retaining wall block, and a first support in the coupling groove 11 Steel rods 41 are inserted to support the reinforced earth retaining wall blocks 10, in which a plurality of blocks are arranged in a row, by the first supporting steel rods 41 (S410).

Then, a plurality of connecting steel bars 42 are connected to the first support steel bar 41, and the connecting steel bars 42 are spaced apart from each other in the longitudinal direction of the first support steel bar 41. ) and connected at right angles (S420).

One end of the connecting steel bar 42 is fastened to each other by the first supporting steel bar 41 and the connecting member 60, and the connecting member 60 for this purpose includes a vertical cylindrical body 61 and the body In a direction crossing the first perforation hole 62 through which the connecting steel bar 42 passes through the upper end of the outer periphery of the body 61 and the first perforation hole 62 at the lower end of the outer periphery of the body 61 The second perforated hole 63 through which the first support steel bar 41 passes through and one end of the connecting steel bar 42 discharged to the outside through the first perforated hole 62 are detachably attached to one end. It is fastened and consists of a fixing member 64 that prevents the connection steel bar 42 from being separated from the connecting member 60.

In addition, an auxiliary block 43 is provided at the end (other end) of the connecting steel bar 42 to be connected to the connecting steel bar 42, and the connecting steel bar 42 is positioned in place by the auxiliary block 43. while supporting the first support steel bar 41. (S430)

At this time, as shown in FIG. 4, an insertion groove 45 is formed on one side of the auxiliary block 43 so that the connection steel bar 42 and the second support steel bar 44 are connected, and the insertion groove 45 has a "T" It is formed in the form of a second support bar 44 is inserted into the horizontal portion and connected to the other auxiliary block 43, and the connecting steel bar 42 is inserted into the vertical portion, and the horizontal portion of the insertion groove 45 is vertical. It is dug relatively deeper than the part, so that the depth of the depression is different from each other.

In this case, the auxiliary block 43 has a first groove 46 into which the connecting steel bar 42 is correspondingly inserted in the insertion groove 45, and a second groove 47 into which the second supporting steel bar 44 is correspondingly inserted. It is further extended in a '+' shape to intersect and forms an extension groove 48, and the extension groove 48 is vertically recessed into the auxiliary block 43 relatively deeper than the second groove 47, The other end of the connecting steel bar 42 is bent in a 'ㄱ' shape to form a bent portion 49, and the second supporting steel bar 44 is attached to the auxiliary block 43 through the extension groove 48. ) is inserted deeper than the corresponding one, so that it is securely tightened and fixed.

In this way, a plurality of auxiliary blocks 43 installed in accordance with the connecting steel bar 42 are connected and supported by the second supporting steel bar 44. (S440)

As described above, although the present invention has been described by the limited embodiments and drawings, the present invention is not limited thereto, and the technical spirit of the present invention and the following by those skilled in the art to which the present invention belongs Of course, various modifications and changes are possible within the scope of equivalents of the claims to be described.

10: Reinforced soil retaining wall block 11: Coupling groove
12: coupling protrusion 20: embankment
21: aggregate 30: grid layer
30a: grid 40: steel bar layer
40b: steel bar 41: first support steel bar
42: connecting steel bar 43: auxiliary block
44: second support steel bar 45: insertion groove
46: first groove 47: second groove
48: extension groove 49: bent portion
50: finishing block 60: connecting member
61: body 62: first perforation hole
63: second perforated hole 64: fixing member

Claims (3)

In the block-type reinforced soil retaining wall construction method,
Stacking a plurality of reinforced earth retaining wall blocks 10 arranged in a row on the front surface where the foundation is formed in multiple stages (S100);
After mounting the reinforced soil retaining wall block 10 in the multi-stage stacking step (S100) of the reinforced soil retaining wall block 10, laying and compacting the embankment 20 on the rear surface of the reinforced soil retaining wall block 10 (S200) ;
In the step of laying and compacting the embankment 20 (S200), laying and compacting the embankment 20 on the rear surface according to the multi-stage of the reinforcing soil retaining wall block 10 (S300);
Steel bar layer 40 with steel bars 40a installed between the multi-tiers or grid layer 30 with grids 30a installed between the multi-tiers in the laying compaction step (S300) of the embankment 20 according to the multi-tiers of the reinforced soil retaining wall block 10 ) are sequentially installed without overlapping each other (S400);
After the compaction step of laying the embankment 20 (S300), installing and finishing the finishing block 50 on the upper surface of the installed reinforced earth retaining wall block 10 (S500); It is configured to include,
In the step (S400) of sequentially installing the steel bar layer 40 with the steel bar 40a or the grid layer 30 with the grid 30a installed without overlapping each other, the steel bar 40a and the grid 30a are The number of each consecutively installed is preset, and each is installed in succession according to the preset number, and is installed in a form of alternating with each other,
In the steel bar installation step (S400), the first support steel bar 41 is inserted into the coupling groove 11 formed on one side of the reinforced soil retaining wall block 10 to support the reinforced soil retaining wall block 10 in which a plurality of reinforcing soil retaining wall blocks 10 are arranged in a row. Step (S410), step (S420) of connecting a plurality of connecting steel bars 42 spaced apart from each other in the longitudinal direction of the first support steel bar 41 and connected at right angles to the first support steel bar 41, and the connecting steel bar An auxiliary block 43 is provided at the end of the 42 to be connected to the connecting steel bar 42, and the first supporting steel bar 41 It is configured to include a step of supporting (S430) and connecting and supporting a plurality of auxiliary blocks 43 installed according to the connecting steel bar 42 by the second supporting steel bar 44 (S440),
An insertion groove 45 is formed on one surface of the auxiliary block 43 so that the connecting steel bar 42 and the second support steel bar 44 are connected, and the insertion groove 45 is formed in a "T" shape to form a horizontal portion. The second support steel bar 44 is inserted and connected to the other auxiliary block 43, and the connecting steel bar 42 is inserted in the vertical portion,
The horizontal part of the insertion groove 45 is dug relatively deeper than the vertical part, so that the depth of depression between them is different,
One end of the connecting steel bar 42 is mutually fastened by the first support steel bar 41 and the connecting member 60,
The connecting member 60 is
a vertical cylindrical body (61);
A first perforated hole 62 through which the connecting steel rod 42 passes through the upper end of the outer circumference of the body 61;
a second drilling hole 63 drilled at the lower end of the outer circumference of the body 61 in a direction crossing the first drilling hole 62 so that the first support rod 41 passes therethrough;
A fixing member 64 that is detachably fastened to one end of the connecting steel bar 42 discharged to the outside through the first perforated hole 62 to prevent the connecting steel bar 42 from being separated from the connecting member 60 ; is made up of
The auxiliary block 43 is
In the insertion groove 45, the first groove 46 into which the connecting steel bar 42 is correspondingly inserted crosses the second groove 47 into which the second supporting steel bar 44 is correspondingly inserted and further formed in a '+' shape. It extends and forms an extension groove 48,
The extension groove 48 is vertically recessed into the auxiliary block 43 relatively deeper than the second groove 47, and the other end of the connecting steel bar 42 is bent in an 'L' shape to form a bent portion 49. Formed, the bent portion 49 is inserted into the auxiliary block 43 deeper than the second support steel bar 44 through the extension groove 48, and is securely fastened and fixed,
In the step (S400) of sequentially installing the steel bar layer 40 with the steel bar 40a or the grid layer 30 with the grid 30a installed without overlapping each other,
Two grid layers 30 and one steel bar layer 40 are alternately and repeatedly formed, or two steel bar layers 40 and one grid layer 30 are alternately and repeatedly formed. Block-type reinforced soil retaining wall construction method that is used and can be installed in various ways.
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