WO2011126267A2

WO2011126267A2 - Retaining wall structure and method for constructing same

Info

Publication number: WO2011126267A2
Application number: PCT/KR2011/002365
Authority: WO
Inventors: 이희자; 최영훈
Original assignee: (주)루펜큐
Priority date: 2010-04-05
Filing date: 2011-04-05
Publication date: 2011-10-13
Also published as: KR101010366B1; WO2011126267A3

Abstract

The present invention relates to a retaining wall structure, comprising: a plurality of reinforcing members which are inserted and fixed in a cut slope, and one end of each of which has a fastening ring; a plurality of blocks stacked in front of the cut slop so as to form a retaining wall; a plurality of rod-shaped support members extending in a horizontal direction between the cut slope and the blocks; a plurality of connection members coupled to the respective blocks and in engagement with the respective support members; and a plurality of connectors, each of which includes a first hook to be caught by the fastening ring arranged at one end of the reinforcing member, and a second hook to be caught by the support member, wherein the length between the first hook and the second hook is adjustable.

Description

Retaining wall structure and construction method

The present invention relates to a retaining wall structure and a construction method thereof, and more particularly, to a retaining wall structure and a construction method of the structure that the construction work can be easily performed.

In the course of implementing various civil works such as housing complexes, industrial complexes, road constructions, waterways and embankments, in order to prevent collapse due to the loss of soil from the land or cut soils, A cut slope is formed and a retaining wall structure is constructed on the cut slope.

An example of a construction method of such a retaining wall structure will be described with reference to FIGS. 1 to 3.

First, the cut slope 1 is formed in the fill or cut land, and the embedding holes 1a are formed in the cut slope 1, and then the reinforcing material 2 is inserted into each of the embedding holes 1a, and the grouting material G ), The reinforcing material 2 is fixed to the cutout surface 1. The retaining wall R is formed by stacking a plurality of blocks 3 in front of the cutout surface 1. In order to prevent the retaining wall R from being conducted, a plurality of supporting members 4 are disposed to extend in the lateral direction, respectively, between the cutout surface 1 and the retaining wall R, and the supporting member 4 and The connecting members 5 fitted into the opposite blocks 3 are engaged with the supporting members 4, respectively. The connecting member 5 has a hook portion 5a which is provided at one end and is caught by the support member 4 and a locking jaw 5b extending in the transverse direction at the other end, and the locking jaw 5b. It is inserted into the engaging groove 3a of the block 3 so that the connecting member 5 is prevented from falling out of the block 3 when a force directed toward the cutout surface 1 is applied to the connecting member 5. It is. And both ends of the connecting body 6 are connected to the one end part (end part exposed to the cutting surface) and the said support member 4 using the

coupling members

6a and 6b. . In this way, the retaining wall R is connected to the reinforcing material 2 and supported by the reinforcing material 2, thereby preventing the retaining wall R from falling forward.

Reference numeral 7 denotes a drainage culvert, and reference numeral 8 denotes a backfill material such as gravel or soil filled between the cut slope 1 and the retaining wall R. The backfill material 8 is generally filled and compacted by an appropriate amount each time the blocks are stacked one by one. That is, after the bottom blocks are placed on the concrete foundation, the backfill material is put into the space between the blocks and the cutting slope, and then the second blocks are stacked on the bottom blocks, and the appropriate amount of backfill material is again applied. The process of filling and compacting is repeated. In this process, after the blocks to which the connecting member 5 are coupled are stacked, the blocks are filled with the back filling material after the operation of connecting the blocks to the reinforcing material 1 as described above. Mince This process is repeated until the uppermost blocks are stacked to complete the retaining wall structure 9 filled with the backfill material 8 between the cutout surface 1 and the retaining wall R. FIG.

On the other hand, in the case of the retaining wall structure 9 described above, the reinforcing member 2 and the supporting member 4 are formed by the rod-shaped connecting member 6 such as the reinforcing bar, which cannot be adjusted in length, and the

coupling members

6a and 6b. Since the connection is made, the connecting body 6 should be made of an appropriate length considering the distance between the reinforcing material 2 and the supporting member 4.

However, since the distance between the reinforcing material 2 and the support member 4 is often different from the set value due to the situation of the construction site or the tolerance at the time of construction, it is necessary to prepare the connecting bodies 6 of appropriate length before construction. It is difficult, after fixing the reinforcing material (2) and installing the retaining wall (R), at the construction site by measuring the distance between the actual reinforcing material (2) and the support member (4) by making a connection of the length It is common to use.

Therefore, the retaining wall structure is due to the measurement of the distance between the respective stiffeners and the support member, the manufacture of connectors of appropriate length in consideration of the measured distance, and the installation of coupling members for connecting each connector to the stiffeners and the support members, respectively. There is a problem that the overall workability of the deterioration. In addition, since the distance between the reinforcing member and the support member and the manufacture of the connecting body are difficult to be precisely executed at the construction site, the construction quality may be deteriorated.

In addition, since the connecting member 5 is prevented from being pulled out of the block 3 by the short catching jaw 5b, when the force toward the cutout surface is applied to the connecting member, the connecting member 5 contacts with the catching jaw of the connecting member. There is also a problem that a large force is intensively applied to the localized site, and the block is often broken by the concentrated load.

The present invention has been made in view of the above-described problems, a structure that can be easily coped even if the distance between the reinforcing material is fixed to the cutting slope, and the support member installed to extend in the transverse direction between the cutting slope and the retaining wall is changed. The purpose is to provide a retaining wall structure of.

Another object of the present invention is to provide a method of constructing a retaining wall structure that can be easily responded even if the distance between the reinforcing material fixed to the cutaway slope and the support member installed to extend laterally between the cutaway slope and the retaining wall is changed. .

In order to achieve the above object, the retaining wall structure of the present invention includes: a retaining wall structure provided on a cutting slope, the plurality of reinforcing members inserted and fixed to the cutting slope and having a coupling ring at one end thereof; A plurality of blocks stacked to form a retaining wall in front of the cutout surface; A plurality of rod-shaped support members disposed to extend transversely between the cutaway surface and the blocks; A plurality of connection members each coupled to one of the blocks and engaged with one of the support members; And a first ring part engaged with the engaging ring provided at one end of the reinforcing material, and a second ring part engaged with the support member, and adjusting the length between the first ring part and the second ring part. It includes a plurality of possible linkages.

In the retaining wall structure, the connecting member includes a base extending in an extending direction of the support member, a pair of upper extending portions extending upward from both ends of the base portion, and extending forward from each of the upper extension portions. A pair of front extensions, and a pair of hooks provided at the end of each of the front extensions and engaged with the support member, and integrally provided in the block, the base and the upper extensions of the connection member It is preferable that a coupling groove is formed to be fitted and coupled.

In order to achieve the above object, the retaining wall structure construction method of the present invention is a retaining wall structure construction method for constructing a retaining wall structure on a cut slope, wherein a plurality of reinforcing materials are inserted into the cut slope to be fixed to one end of each stiffener. Coupling a binding ring; Stacking a plurality of blocks to form a retaining wall in front of the cutaway surface; Disposing a plurality of rod-shaped support members in a transverse direction between the cutaway surface and the blocks; Coupling a plurality of connecting members to one of the blocks and engaging one of the supporting members, respectively; Providing a plurality of adjustable length connectors, hooking one end of each connector to the engaging ring of the reinforcing material, and hooking the other end of each connector to the support member; And adjusting the length of each connecting member to a length at which one end of each connecting member and the engaging ring of the reinforcing member and the other end of each connecting member and the supporting member can be maintained. It includes; adjusting the length.

According to the present invention, even if the distance between the reinforcing material fixed to the cut-out surface and the support member is changed, by adjusting the length of the connecting body connecting the reinforcement and the support member, it is possible to easily connect the reinforcement and the support member, construction Workability can be improved and construction quality can be improved.

In addition, the connecting member has a base extending in the extending direction of the support member, and a pair of upward extensions extending upward from both ends of the base, and the block has a base portion and an upward extension portion of the connecting member. When the coupling groove is formed to be fitted and coupled, the force transmitted to the block is applied to the connection member when the force directed toward the cutoff surface is distributed to a relatively large area through the base portion and the upper extension portion, thereby preventing the block from being broken. It can be effectively prevented.

1 is a view for explaining a conventional retaining wall structure.

FIG. 2 is a schematic cross-sectional view taken along the line II-II in FIG. 1. FIG.

3 is a schematic exploded perspective view of the block and the connecting member shown in FIG. 1.

4 is a view for explaining a retaining wall structure according to an embodiment of the present invention.

FIG. 5 is a schematic enlarged cross-sectional view of the connector portion in FIG. 4. FIG.

6 is a schematic cross-sectional view taken along the line VI-VI in FIG. 4.

FIG. 7 is a schematic exploded perspective view of the main part of the retaining wall structure shown in FIG. 4. FIG.

8 is a schematic exploded perspective view of the block and the connecting member shown in FIG. 4.

Hereinafter, a retaining wall structure according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

4 is a view for explaining a retaining wall structure according to an embodiment of the present invention, Figure 5 is a schematic enlarged cross-sectional view of the connector portion in FIG. 6 is a schematic cross-sectional view taken along line VI-VI in FIG. 4, and FIG. 7 is a schematic separated perspective view of a main portion of the retaining wall structure shown in FIG. 4. 8 is a schematic exploded perspective view of the block and the connecting member shown in FIG. 4.

4 to 8, the retaining wall structure 100 according to the present embodiment is provided on the cut slope 1 of the land or cut land, similar to the conventional retaining wall structure 9 described with reference to FIGS. 1 to 3. will be.

The retaining wall structure 100 of the present embodiment includes a plurality of reinforcing materials 20, a plurality of blocks 30, a plurality of supporting members 40, a plurality of connecting members 50, and a plurality of connecting bodies 60. It is configured to include).

Each said reinforcing material 20 is inserted into the embedding holes 1a formed in the cutout surface 1, and is fixed by the grouting material G. As shown in FIG. A male screw portion 21 is formed at one end (an end adjacent to the cutout surface 1) of each reinforcing material 20, and a support block 80 is disposed around one end of each reinforcing material 20. As shown in FIG. The support block 80 is formed in a cross shape by, for example, a synthetic resin material such as polypropylene, and its rear surface is in contact with the cutout surface 1. The through hole 85 is formed in the central portion of the support block 80. The pressure support plate 90 is disposed on the front portion of the support block 80. The pressure supporting plate 90 is made of metal such as stainless steel in a plate shape, and a through hole 95 is formed in the center portion. The male screw portion 21 of each of the reinforcement 20 is exposed through the through hole 85 of the support block 80 and the through hole 95 of the pressure support plate 90, the exposed reinforcement 20 The coupling ring 25 is screwed into the male screw portion 21 of the. The coupling ring 25 is screwed to the male screw portion 21 of the reinforcing material 20, and presses the support block 80 to be in close contact with the cutout surface 1. In this way, the support block 80 in close contact with the cutting slope 1 prevents the loss or collapse of the cutting slope 1 around one end of the reinforcing material 20.

The blocks 30 are stacked in front of the cutting slope 1 to form the retaining wall R. Each block 30 is provided with a coupling groove 35 recessed downward from the upper surface, and a pair of auxiliary coupling grooves 36 provided to be connected to both sides of the coupling groove 35. The block 30 is preferably made of a material having water permeability, such as porous concrete.

Each of the supporting members 40 has a rod shape, and is disposed to extend laterally between the cutout surface 1 and the retaining wall R (the stacked blocks). As this support member 40, a rebar, a metal rod, etc. can be employ | adopted suitably.

Each connecting member 50 is coupled to one of the blocks 30 and is engaged with one of the support members 40. The connecting member 50 in this embodiment is formed by bending a reinforcing bar or a metal rod, and includes a base portion 51, a pair of upper extension portions 52, and a pair of front extension portions 53. And a pair of hook portions 54 are integrally provided. The base portion 51 is a portion extending in the extending direction (lateral direction) of the support member 40. The upper extension portions 52 are portions extending upward from both ends of the base portion 51. The base portion 51 and the upper extension portion 52 are fitted into the coupling groove 35 of the corresponding block 30 to be coupled. The front extensions 53 are portions extending forward from each of the upper extensions 52 and fitted into the auxiliary coupling grooves 36 of the corresponding blocks 30, respectively. In addition, the hook portion 54 is provided at the end of each front extension portion 53 to protrude relative to the block 30 to be engaged with the support member 40. The distance between the hook portions 54 of the connecting member 50 is formed larger than the length of the base portion (51).

Each of the connecting bodies 60 includes a nut member 600, a first connecting rod 61, and a second connecting rod 62.

The nut member 600 includes a first female threaded portion 601 and a second female threaded portion 602 disposed on the same axis, and the first female threaded portion 601 and the second female threaded portion 602 The spirals are opposite to each other.

One end of the first connecting rod 61 is provided with a first ring portion 611 that is engaged with the engaging ring 25 provided in the reinforcing material 20, the other end of the first of the nut member 600 A first male screw portion 612 is screwed to the female screw portion 601.

One end of the second connecting rod 62 is provided with a second ring portion 621 which is engaged with the support member 40, and the other end is screwed to the second female screw portion 602 of the nut member 600. A second male screw portion 622 is formed.

Since the spiral directions of the first female threaded portion 601 and the second female threaded portion 602 of the nut member 600 are opposite to each other, when the nut member 600 is rotated, the first female threaded portion of the nut member 600 ( The first connecting rod 61 having the first male screw portion 612 screwed to the 601, and the second connecting rod 62 having the second male screw portion 622 screwed to the second female screw portion 602 According to the rotational direction of the nut member 600, they are moved in a direction approaching or away from each other. As such, the distance between the first ring portion 611 and the second ring portion 621 is adjusted by moving in the direction in which the first connecting rod 61 and the second connecting rod 62 approach each other or away from each other. .

Reference numeral 7 denotes a drainage culvert, and reference numeral 8 denotes a backfill material such as gravel or soil filled between the cut slope 1 and the retaining wall R.

Hereinafter, an example of a method of constructing the retaining wall structure 100 of the present embodiment will be described.

First, the reinforcing materials 20 are inserted into and fixed to the cutting slope 1 formed by cutting the land or cut paper, and the support block 80 and the pressure support plate 90 are respectively provided on the cutting slopes of the portions having the reinforcing materials 20. ), A male screw portion 21 formed at one end of the reinforcing material 20 fixed to the cutting surface 1 is a through hole 85 of the support block 80 and a through hole of the pressure support plate 90. After it is exposed through the (95), by screwing the coupling ring 25 to the male screw portion 21, while fixing the coupling ring 25 to the reinforcing material 20, and to the coupling ring 25 The support block 80 is pressed against the cutout surface 1 by close contact. The support block 80 pressed by the cutting slope 1 and closely adhered to the cutting block 80 effectively prevents the cutting slope of the portion from being lost or collapsed.

After the reinforcement 20 is fixed to the cutout surface 1, the retaining wall R is formed by stacking the blocks 30 in front of the cutout surface 1. In the process of stacking the blocks 30, the base portion 51 and the upper extension portion 52 of the connecting member 50 are inserted into the coupling groove 35 in advance in the block 30 to be connected to the support member 40. In a state of being left, the blocks 30 are stacked.

In order to prevent the retaining wall R from falling, the retaining wall R is connected to the reinforcing materials 20 and supported by using the supporting members 40, the connecting members 50, and the connecting members 60. Let's do it. Specifically, the support member 40 is arrange | positioned in the suitable position between the cutoff surface 1 and the retaining wall R, and the connection member 50 adjacent to the support member 40 to each support member 40 is carried out. Hang the hook portion 54 of the field. Then, the first ring portion 611 of each connector 60 is hooked to the engaging ring 25 coupled to each of the reinforcing materials 20, and the second ring portion 621 is hooked to the support member 40. At this time, when the nut member 600 is rotated, the distance between the first ring portion 611 and the second ring portion 621 is adjusted according to the rotation direction. Therefore, once the first ring portion 611 and the second ring portion 621 of the connecting member 60 is temporarily hanged on the coupling ring 25 and the support member 40 of the reinforcing material 20, respectively, The member 600 is rotated so that the first connecting rod 61 having the first ring portion 611 and the second connecting rod 62 having the second ring portion 621 are approached or spaced apart from each other. 60) Adjust the length accordingly. That is, the length of the connecting body 60 can be reliably connected between one end of the reinforcing material 20 and the supporting member 40 by the connecting body 60 (first ring portion 611 and the reinforcing material ( 20) the engagement of the coupling ring 25 and the length that the engagement of the second ring portion 621 and the support member 40 can be maintained). In this way, the retaining wall R is connected to and supported by the reinforcing materials 20 to prevent the retaining wall R from being conducted.

The backfill material 8 is filled and compacted by an appropriate amount each time, for example, when the blocks 30 are stacked one by one, as in the case of the construction of the retaining wall structure 9 according to the related art. After the blocks to be connected to (20) are stacked, the operation of connecting the blocks and the reinforcement (as described above, connecting the connecting member 600 to the coupling ring 25 and the connecting member 50) is performed. The backfill is filled and compacted.

The connecting body 60 is adjustable in length between the first ring portion 611 connected to the coupling ring 25 of the reinforcing material 20 and the second ring portion 621 connected to the support member 40. Since the distance between the reinforcing material 20 and the support member 40 is different from the setting value due to the situation of the construction site, the tolerance at the time of construction, or the like, even if the setting value is not specified, Construction is possible by adjusting the length of the connecting body 60 in response to the distance between the reinforcing material 20 and the support member 40. Therefore, it is not necessary to measure the distance between the reinforcing material 20 and the support member 40 in advance, and the first and

second ring portions

611 and 621 of the connecting body 60 are coupled to the coupling ring 25 of the reinforcing material 20. ) And the support member 40 is rotated and the nut member 600 is rotated to adjust the length of the connecting member 60 so that the connection between the reinforcing material 20 and the support member 40 is performed. Overall construction can be done very easily.

Therefore, as compared with the case of the conventional retaining wall structure 9 described with reference to FIGS. 1 to 3, the workability is improved and the construction quality can be improved.

On the other hand, the connecting body 30 may all use the same standard, but in consideration of the fact that the distance between the reinforcing material 20 and the support member 40 is longer as the cutting slope 1 is inclined upwards, Prepare the connecting bodies of several standards having different lengths of the first connecting rod 61 and / or the second connecting rod 62, and select one of the appropriate standards according to the installation position of the connecting member. It may be. For example, in the case of Figure 4, the connecting body installed on the upper side (connecting body corresponding to the block located in the third end from the top) is the length described above by using the long length of the first connecting rod and the second connecting rod When adjusting the length of the connecting body (connecting body corresponding to the block located in the seventh stage from the top) is installed on the lower side of the length of the first connecting rod and the second connecting rod is used to adjust the length, The adjusting operation of each connecting member can be performed quickly and easily.

And, as in this embodiment, the connecting member 50 is a base portion 51, a pair of upper extension portion 52, a pair of front extension portion 53, a pair of hook portion ( 54, and the base 51 and the upper extension 52 are fitted into the coupling groove 35 of the block 30 to be coupled to each other. When a force is applied toward), the base portion 51 and the pair of upwardly extending portions 52 of the connecting member 50 come into contact with the block 30, and as a result, the force applied to the connecting member 50. Is transmitted to the block 30 through the base 51 and the pair of upward extensions 52, so that the forces are not locally concentrated and are evenly distributed over the large area of the block 30. Furthermore, the distance between the hook portions 54 of the connecting member 50 is formed larger than the length of the base portion 51 and the front extensions 53 are fitted into the auxiliary coupling groove 36 of the block 30 to be coupled. In this case, the force transmitted to the block 30 is also transmitted through the front extensions 53, so that only the force distributed evenly over the larger area is applied to the block 30. Therefore, when a force to the cutout surface 1 side is applied to the connecting member 5 in the conventional retaining wall structure 9, the block 3 is provided at a localized area in contact with the engaging jaw 5b of the connecting member 5. The problem that the block is broken by the concentrated load because a large force is applied intensively can be effectively improved in the retaining wall structure 100 of the present embodiment.

On the other hand, when the blocks 30 are made of a permeable material such as porous concrete, for example, moisture contained in the backfill material 8 or the like can be easily discharged through the blocks 30, thereby reducing the earth pressure on the back of the blocks. It has a reducing effect. In addition, when the block is made of porous concrete, the seeds of the plant can be easily settled in the fine holes in the front of the block, so that natural vegetation at the front of the block can be expected.

While the present invention has been described with reference to preferred embodiments, the present invention is not limited to these examples, and may be embodied in various forms without departing from the scope of the claims.

The present invention can be effectively applied at the time of construction of the retaining wall structure or the retaining wall structure provided on the cut slope.

Claims

In the retaining wall structure provided on the cut slope,

A plurality of reinforcing members inserted into the cutting slope and fixed to one end thereof and having a coupling ring;

A plurality of blocks stacked to form a retaining wall in front of the cutout surface;

A plurality of rod-shaped support members disposed to extend transversely between the cutaway surface and the blocks;

A plurality of connection members each coupled to one of the blocks and engaged with one of the support members; And

And a first ring part engaged with the engaging ring provided at one end of the reinforcement member, and a second ring part engaged with the support member, and adjusting the length between the first ring part and the second ring part. Retaining wall structure comprising a plurality of possible connections.
The method of claim 1,

Each connector is:

A nut member having a first female screw portion and a second female screw portion disposed coaxially with the first female screw portion and having a spiral direction opposite to the first female screw portion;

A first connecting rod having a first male portion provided at one end thereof and a first male screw portion screwed to a first female screw portion of the nut member at the other end thereof; And

And a second connecting rod having a second male portion provided at one end thereof and a second male threaded portion screwed to the second female screw portion of the nut member at the other end thereof.
The method of claim 1,

The connecting member includes a base extending in an extending direction of the support member, a pair of upward extensions extending upward from both ends of the base, and a pair of forward extensions extending forward from the respective upward extensions. And a pair of hook portions provided at the ends of each of the front extensions and engaged with the support members.

Retaining wall structure, characterized in that the block is formed with a coupling groove to the base portion and the upper extension of the connecting member is fitted.
The method of claim 3,

The distance between the hook portions of the connecting member is greater than the length of the base portion,

Retaining wall structure, characterized in that the block is formed with an auxiliary coupling groove to which the front extension of the connecting member is fitted.
The method of claim 1,

A synthetic resin support block having a rear surface disposed to contact the cutout surface and having a through hole formed at a central portion thereof to expose one end of the reinforcing material; And

And a metal pressure support plate disposed on the front surface of the support block and having a through hole for exposing one end of the reinforcement in a central portion thereof.

The retaining wall is screwed to one end of the reinforcing material exposed through the through hole of the support block and the through hole of the pressure support plate, and the retaining wall is configured to press the support block in a direction in close contact with the cutoff surface. structure.
In the retaining wall structure construction method for constructing the retaining wall structure on the cut slope,

Inserting and fixing a plurality of reinforcing materials to the cutout surface and coupling the coupling ring to one end of each reinforcing material;

Stacking a plurality of blocks to form a retaining wall in front of the cutaway surface;

Disposing a plurality of rod-shaped support members in a transverse direction between the cutaway surface and the blocks;

Coupling a plurality of connecting members to one of the blocks and engaging one of the supporting members, respectively;

Providing a plurality of adjustable length connectors, hooking one end of each connector to the engaging ring of the reinforcing material, and hooking the other end of each connector to the support member; And

Adjusting the length of each connector to the length that can be engaged with the engaging ring of one end of each connecting member and the reinforcement and the other end of the connecting member and the engaging member of the support member, length Retaining wall structure construction method comprising a; adjusting step.
The method of claim 6,

Each of the connecting bodies is a nut member having a pair of female screw portions arranged in a coaxial direction opposite to each other in a helical direction, and is screwed to any one of the female screw portions of the pair of female screw portions of the nut member, and the reinforcing member is coupled thereto. A first connecting rod caught by the ring and a second connecting rod which is screwed to the other female threaded portion of the pair of female threaded portions of the nut member, and caught by the support member,

Retaining wall structure construction method, characterized in that for adjusting the length of the connecting body by rotating the nut member in the length adjustment step.