KR102074193B1 - Structure of bamboo soil nailing - Google Patents

Abstract

The present invention relates to a bamboo soil nailing structure, which is characterized by comprising: a bamboo which is inserted into a perforated hole formed on the ground, and of which a rear end portion protrudes to the outside of the perforated hole; grout which is injected into the perforated hole in order to couple the ground to the bamboo; and a fixating device which is coupled to the rear end portion of the bamboo in order to secure the rear end portion of the bamboo to an entrance of the perforated hole. Because the bamboo, which is a brittle material, is used as a reinforcing material, the same can be rapidly removed by a light impact when a new structure is constructed on the adjacent ground. In addition, even when the bamboo soil nailing structure is used for a long period of time, the bamboo, which is an eco-friendly material, is not corroded in the ground or the grout, thereby providing an eco-friendly effect of preventing pollution of the ground.

Description

Structure of bamboo soil nailing

The present invention relates to a bamboo soil nailing structure, and more particularly, to a bamboo soil nailing structure formed by replacing steel reinforcement materials used in the soil nailing method with environmentally friendly and economical bamboo.

Soil nailing method is to form a drilling tool in the ground to prevent the collapse of the ground such as slope, excavation surface, reinforce the ground by inserting a reinforcement and filling the grout to integrate the ground and reinforcement In this small nailing method, a reinforcement formed mainly of steel is inserted to increase shear strength of the original ground and to suppress possible displacement.

However, in the conventional soil nailing method, when the steel reinforcement is installed to invade the land boundary, construction problems occur due to the reinforcement installed to invade the land boundary when excavating the ground for the construction of a structure in an adjacent site. have.

In addition, the steel reinforcement has a problem that the construction cost increases because the price is high.

In addition, there is a problem that the environment may be contaminated by corrosion of the steel generated by the steel reinforcement in the ground for a long time.

Therefore, by using environmentally friendly materials instead of expensive steel, the ground can be reliably reinforced, and the ground is not contaminated even for long periods of time, and it can be quickly removed even when constructing new structures on adjacent sites. The technology development of small nailing structure is needed.

Patent 1: Republic of Korea Patent Publication No. 10-2006-0097957

The present invention is to solve the above problems, and by using a reinforcing material used for the soil nailing as a bamboo can be replaced by expensive steel, to provide a bamboo soil nailing structure to increase the economic efficiency.

In addition, by using environmentally friendly bamboo as a reinforcing material, it is intended to provide a bamboo soil nailing structure is not soil contamination.

In addition, it is intended to provide a bamboo soil nailing structure that can be quickly removed only by the blow due to the nature of the bamboo soil nailing structure constructed with bamboo when the new construction on the adjacent ground.

In addition, by inserting a twisted wire inside the environment-friendly bamboo tension and removing the strand after use, to provide sufficient strength and at the same time environmentally friendly bamboo soil nailing structure.

Bamboo soil nailing structure according to an embodiment of the present invention, the bamboo is inserted into the drilling tool formed in the ground and the rear end projecting out of the drilling tool; A grout injected into the drilling tool to couple the ground and the bamboo; And a fixing device coupled to the rear end of the bamboo to fix the rear end of the bamboo to the entrance of the drilling tool.

The bamboo is cut in the longitudinal direction and divided into a plurality of randomly arranged by binding to a plurality of binding members, it can be characterized in that the grout penetrates well into the bamboo to increase the bonding force.

The fixing device, the plate penetrates the rear end of the bamboo is installed in contact with the ground; And a fixing clip fixed to the bamboo of the rear plate, wherein the fixing clip includes a pair of half arcs (half ovals), flanges extending outwardly at both ends of each of the pair of half arcs, and Bolt holes formed in the flanges, and bolts and nuts fastened to the bolt holes, the half arc (half ellipse) and the flange is a trapezoidal shape that increases in width from one flange to the other side of the back of the plate It may be characterized in that it is installed in close contact with.

Bamboo soil nailing structure according to another embodiment of the present invention, bamboo inserted into the drilling tool formed in the ground and the inner partition wall is removed; A fixing unit coupled to the front end of the bamboo; Removable lower body coupled to the front end of the anchorage; A strand coupled to a front end portion of the removable inner body and having a rear end passing through the inside of the bamboo; A grout injected into the drilling tool to couple the ground and the bamboo; And a second fixing device coupled to a rear end of the stranded wire to fix the rear end of the stranded wire to the entrance of the drilling tool.

It further comprises a tube surrounding the outer side of the strand, the through holes are formed in the bamboo, the grout is injected into the interior of the bamboo through the through holes to increase the strength and at the same time can remove the strand You can do

The second fixing device may include: a second plate penetrating the rear end of the strand and installed in contact with the ground; And a second fixing clip fixed to the strand of the rear portion of the second plate, wherein the second fixing clip includes: an angle pipe which is installed to penetrate the strand; and a wedge provided at a rear portion of the angle pipe; And a cone for fixing the strand to the wedge, wherein the angular pipe is cut at right angles to the shaft and the front pipe is cut at an angle to the shaft to be in good contact with the second plate.

The anchorage, the expansion portion is inserted into the front end of the bamboo; A thick insert portion having a thick portion into which the removable inner body is inserted; It is characterized in that it is formed between the expansion portion and the shear inserting portion may include an intermediate portion formed with fixing projections protruding at regular intervals on the outer surface.

The removable load-bearing body includes a first member coupled to the anchorage, a second member coupled to the front of the first member, a bolt coupled to the front of the second member, and inserted into the first member. It may include a wedge for preventing the pull out of the strand, a cap coupled to the wedge and the front end of the strand is inserted, and a spring installed in the front end of the wedge.

The bamboo may be cut in the longitudinal direction, divided into a plurality, and arranged roundly, and bound by a plurality of binding members.

Some of the divided into a plurality of the bamboo may be characterized by increasing the minimum strength of the bamboo by arranging the front and rear by changing the front and rear similar to the diameter of the bamboo.

The bamboo is removed by the inner partition, and is arranged in a round, including a portion or all of the other bamboo divided into a plurality of cut in the longitudinal direction, characterized in that the strength is increased than the strength of one bamboo Can be.

It is characterized in that it further comprises a space coupled to the outside of the bamboo to maintain the spacing interval of the drilling tool and the bamboo, and a grout injection hose coupled to the outside of the bamboo extending to the front of the drilling tool have.

The present invention can increase the economic efficiency by replacing expensive steel with bamboo.

In addition, by using environmentally friendly bamboo as a reinforcement, environmental pollution of the ground can be prevented.

In addition, bamboo, which is a reinforcement, is not an obstacle when constructing new structures on adjacent ground.

In addition, by cutting the bamboo in the longitudinal direction divided into a plurality and then randomly arranged by binding to the binding member, the volume of the nail nail can be reduced, the bonding force with the grout and the ground can be increased.

In addition, by using a removable stranded wire together, high strength is achieved while being environmentally friendly.

In addition, it is possible to increase the overall strength of the bamboo by cutting the bamboo in the longitudinal direction to divide it into a plurality, and some of them are arranged in a circular shape by changing the front and rear.

In addition, by cutting the bamboo in the longitudinal direction to divide the plurality into a plurality, and then using some or all of the other cut bamboo, the strength can be increased than the strength of one bamboo.

Figure 1a is a side view and a cross-sectional view showing a bamboo soil nailing structure according to an example of the present invention.
Figure 1b is a side view showing a state in which the bamboo soil nailing structure of Figure 1a installed on the ground.
Figure 1c is a view showing a state that is arranged by turning a part after cutting the bamboo of the present invention.
1D is a side view and a front view showing in detail the rear portion of the bamboo soil nailing structure of the present invention.
Figure 1e is a view showing a fixing state of the bamboo soil nailing structure of the present invention and its coupling state.
Figure 1f is a view showing a state in which the spacer of the bamboo soil nailing structure of the present invention is installed.
Figure 2a is a side view and a cross-sectional view showing a bamboo soil nailing structure according to another example of the present invention.
FIG. 2B is a view showing a state in which the bamboo soil nailing structure of FIG. 2A is installed on the ground; FIG.
FIG. 2C is a side view and a front view showing the rear portion of the bamboo soil nailing structure of FIG. 2A.
FIG. 2D is a side view and a front view illustrating in detail a coupling state of the second fixing device without the angular pipe in FIG. 2A.
FIG. 2E is a detailed view of the anchorage of FIG. 2A.
FIG. 2F is a detailed view illustrating a state in which a strand wire is disposed on the inner side after coupling the anchorage and the removable load-bearing body of FIG. 2A to bamboo.
3 is a detailed view showing a spacer of another embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. In adding reference numerals to the elements of each drawing, the same elements are designated by the same reference numerals as much as possible even though they are shown in different drawings. In addition, in describing the embodiments of the present invention, when it is determined that a detailed description of a related well-known configuration or function disturbs the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but there may be another component between each component. May be “connected”, “coupled” or “connected”.

Hereinafter, the bamboo soil nailing structure according to an example of the present invention will be described in detail with reference to FIGS. 1 to 3.

Bamboo soil nailing structure according to an embodiment of the present invention, the bamboo 10 is inserted into the drilling tool formed in the ground and the rear end protruding to the outside of the drilling tool; A grout injected into the drilling tool to couple the ground and the bamboo 10 to each other; And a fixing device 20 coupled to the rear end of the bamboo 10 to fix the rear end of the bamboo 10 to the inlet of the drilling tool.

The present embodiment can be usefully applied when reinforcing the ground which may cause ground collapse such as slope, excavation surface, and cutting surface.

Bamboo embodiment according to the embodiment of the present invention may be used as the bamboo 10 to reinforce the material inserted into the drilling tool formed in the ground. Bamboo 10 is a material that can exhibit a very large tensile strength by its fiber structure. Therefore, the bamboo 10 having a large tensile strength is fixed to the ground by the grout, it can effectively respond to the ground collapse. In addition, by constructing a small nailing structure using bamboo 10 in place of expensive steel, economics can be significantly increased.

In this embodiment, the bamboo 10 is inserted into the drilling tool of the ground as it is, and the rear end may protrude to the outside of the drilling tool. The rear end of the protruding bamboo 10 may be fixed to the ground by a fixing device 20 to be described later. The bamboo 10 has the inner partition is removed, the through holes 12 may be formed. In the present embodiment, the grout is injected into the bamboo 10 through the through hole 12, thereby increasing the strength of the bamboo 10.

In addition, the bamboo 10 can be used by cutting in the longitudinal direction divided into a plurality. Bamboo 10 divided into a plurality may be used by binding randomly arranged by a plurality of binding members. That is, the partitions of the bamboo 10 divided into a plurality may be arranged to be alternate with each other, or arranged at random, such as by changing the inner and outer surfaces of the bamboo 10 can be used by binding to the binding member. As the grout is injected and cured between the randomly arranged bamboos 10 and fixed to the ground, the bonding force between the ground and the bamboos 10 is remarkably increased, and thus the strength of the bamboo soil nailing structure may be increased. . In addition, the cut bamboo 10 is installed by changing the front and rear direction about half, it is possible to increase the overall strength. In addition, the strength can be easily increased to the required level by using at least one cut bamboo 10.

Further, the inner partition of the bamboo 10 is removed, cut in the longitudinal direction, divided into a plurality, and arranged roundly, and can be used by binding with a plurality of binding members. The round bar means a shape that is round, oval or circumferential.

In addition, after removing the inner partition of the bamboo 10, cut in the longitudinal direction and divided into a plurality of parts, some can be arranged round and round to change the front and rear can be used to make the front and rear diameter of the bamboo 10 similar. This can make the overall strength of the bamboo 10 similar, thereby increasing the overall strength.

In addition, by removing the inner partition wall, it may be arranged to include a portion or the whole of another bamboo 10 cut in the longitudinal direction and divided into a plurality. This can easily increase the strength when the strength is insufficient by one bamboo (10).

In addition, the spacer 70 may be coupled to the outside of the bamboo 10. The spacer 70 may keep the spacing between the drilling tool and the bamboo 10 constant. Therefore, since the bamboo 10 is accurately fixed to the center of the drilling tool by the spacer 70, the ground reinforcement efficiency can be constructed to conform to the construction design value.

In addition, the grout injection hose 80 may be coupled to the outside of the bamboo (10). The grout injection hose 80 may extend to the front of the drilling tool. Therefore, by injecting grout densely from the front part to the rear part of the drilling tool, the bamboo 10 can be firmly fixed to the ground. The injected grout may be injected into the bamboo 10 through the above-described through hole 12 or the cutout to increase the strength of the bamboo 10.

The fixing device 20 may be coupled to the rear end of the bamboo 10. Fixing device 20 can be secured to the rear end of the bamboo 10 to the entrance of the drilling tool, it is possible to prevent the ground collapse.

The fixing device 20 may include a plate 22 and a fixing clip 24. Plate 22 may be installed in contact with the ground through the rear end of the bamboo (10). That is, the plate 22 may be formed of a steel plate or the like, and a through hole may be formed in the center portion thereof.

A fixing clip 24 may be coupled to the bamboo 10 at the rear portion of the plate 22. The fixing clip 24 may include a pair of half arcs (half ellipses), flanges, bolt holes, bolts and nuts.

The pair of half arcs may be formed in a half arc shape to surround the outside of the rear end of the bamboo 10 from both sides. Both ends of the pair of half arcs may be formed with a flange extending outwardly. Bolting holes may be formed in the flange. That is, the plate 22 is placed on the ground by inserting a bolt into the bolt holes of the flanges formed at both ends of the pair of half arcs and fastening a nut after overlapping a pair of half arcs at the rear end of the bamboo 10. It can be installed in close contact.

The half arc and the flange may be formed to gradually increase in width from one flange to the other flange. That is, when viewed from the side, the width of the other side is wider than the one side is formed in a trapezoidal shape, so that the front surface is in close contact with the back of the plate 22 can increase the bonding force.

Bamboo soil nailing structure according to another embodiment of the present invention, the bamboo 10 inserted into the drilling tool formed in the ground and the inner partition is removed; Fixture 30 is coupled to the front end of the bamboo (10); Removable load-bearing body 40 is coupled to the front end of the anchorage (30); A strand line 50 coupled to a front end portion of the removable inner body 40 and passing through an interior of the bamboo 10 to expose a rear end portion to the outside of the drilling tool; A grout injected into the drilling tool to couple the ground and the bamboo 10 to each other; And a second fixing device 60 coupled to the rear end of the strand 50 to fix the rear end of the strand 50 to the inlet of the drilling tool.

In the present embodiment, a description will be given mainly on the point of difference from the above-described embodiment. Parts not described in the present embodiment may be applied by inferring the above-described embodiment.

Bamboo 10 of the present embodiment may be inserted into a drilling tool formed in the ground. Bamboo 10 of the present embodiment may not need to be exposed to the outside of the drilling tool.

The bamboo 10 of the present embodiment may remove the partition wall from the bamboo 10 as it is, and form the through holes 12.

Bamboo 10 of the present embodiment is very effective compared to a simple removable anchor by serving as a ground support even after removal of the strand.

In addition, the bamboo 10 may be used to remove the inner partition wall, cut in the longitudinal direction, divided into a plurality, and arranged round, and bound by a plurality of binding members.

In addition, some of the bamboo 10 is cut and divided into a plurality of the above can be arranged by changing the front and rear to make the front and rear diameter of the bamboo 10 similar. This may increase the lowest strength of the bamboo 10 to increase the overall strength of the bamboo soil nailing structure.

In addition, it can be used to be arranged round to include a part or all of another bamboo 10 cut in the longitudinal direction to the bamboo 10 divided into a plurality. This can be applied when the strength of more than one bamboo 10 is required.

 When the partition wall is removed from the inside of the bamboo 10, the strand 50 may be easily inserted. By applying prestress to the inserted strand 50, the structural strength of the bamboo soil nailing structure can be significantly increased.

In addition, a tube 52 surrounding the outside of the strand 50 may be further installed. The tube 52 allows the strand 50 to be removed by separating the grout and the strand 50 injected into the bamboo 10. That is, the grout injected through the through hole 12 of the bamboo 10 reinforces the rigidity of the bamboo 10 to increase the strength of the bamboo soil nailing structure and suppress the occurrence of displacement. In addition, the tube 52 can remove the strand 50 by separating the injected grout and the strand 50, thereby forming an environmentally friendly bamboo soil nailing structure.

The anchorage 30 may be coupled to the front end of the bamboo 10. The fixing unit 30 may include an extension part, a shear insertion part, and an intermediate part.

The front end of the bamboo 10 may be inserted into the extension. That is, the front end portion of the bamboo 10 may be formed to a diameter that can be inserted.

Shear insertion portion may be inserted into the removable inner body 40 to be described later. Since the answer insertion portion is to be inserted into the removable inner body 40 is preferably formed to have a thick thickness.

The intermediate portion may be formed between the expansion portion and the shear insertion portion. In other words, the intermediate portion is configured to connect the expansion portion and the shear insertion portion. The outer surface of the intermediate portion may be formed by projecting the fixing projections at regular intervals. The fixing protrusion may increase the grout and the adhesive force injected into the inside of the drilling tool, and may firmly fix the inside of the drilling tool.

To the front end of the fixing unit 30 may be coupled to the removable load-resistant body 40. The removable load-bearing body 40 may include a first member 42, a second member 44, a bolt, a wedge 46, a cap 48, and a spring 49.

The anchorage 30 can suppress the compressive force that acts excessively on the bamboo 10 when the strand is tensioned.

The first member 42 of the removable load-bearing body 40 is inserted and coupled to the front end insertion portion of the fixing unit 30, the second member 44 may be screwed in front of the first member 42. have. In addition, a bolt may be coupled to the front of the second member 44. That is, the bolt may have a bolt head facing forward, and the screw of the bolt may be inserted into the second member 44 to protrude. The first member 42 has an inclined groove extending forward, and the wedge 46, that is, a plurality of divided wedges 46 may be inserted into the inclined groove. The wedge 46 may prevent the pull out of the strand 50. The cap 48 may be coupled to the front inner side of the wedge 46. The cap 48 may be inserted into the front end of the strand 50. A spring 49 may be installed in front of the wedge 46. The spring 49 can prevent the wedge 46 from protruding forward.

The removal of the strand 50 after completion of construction removes the strand 50 by cutting the square pipe 642 and the inner strand 50 of the inside with a welding machine, and then hitting a part of the cut strand 50 forward. can do.

That is, the strand 50 may be formed such that the front end portion is coupled to the removable load-bearing body 40 and extends beyond the interior of the bamboo 10, and the rear end thereof is exposed to the outside of the drilling tool. The strand 50 is tension-settled, thereby increasing the strength of the bamboo soil nailing structure.

The spacer 70 may be coupled to the outside of the bamboo 10 as in the above-described embodiment. The spacer 70 may maintain the spacing between the drilling tool and the bamboo 10 inserted into the drilling tool. Therefore, since the bamboo 10 is accurately fixed to the center of the drilling tool by the spacer 70, the ground reinforcement efficiency can be constructed to conform to the construction design value.

In addition, the grout injection hose 80 may be coupled to the outside of the bamboo 10 in the same manner as in the above-described embodiment. The grout injection hose 80 may extend to the front of the drilling tool. Therefore, grout described later can be easily injected from the front part to the rear part of the drilling tool. In the case of using the cut bamboo 10, the grout may be injected and filled into the inside of the bamboo 10 through the cut portion. This may increase the strength of the bamboo soil nailing structure.

A second fixing device 60 may be coupled to the rear end of the strand 50. The second fixing device 60 may allow the strand 50 to be firmly fixed to the inlet of the drilling tool. The second fixing device 60 differs from the fixing device 20 described above in that the second fixing device 60 is fixed to the strand 50.

The second fixing device 60 may include a second plate 22 and a second fixing clip 64.

The second plate 22 penetrates through the rear end of the strand 50 and may be installed in contact with the ground. The second plate 22 may be formed of a steel plate or the like, and a through hole may be formed in the center portion thereof.

The second fixing clip 64 may be coupled to the rear portion of the second plate 22 to be fixed to the strand 50.

The second fixing clip 64 may include an angular pipe 642, a wedge 644, and a cone 646.

The square pipe 642 may be formed such that the rear surface thereof is cut at right angles to the shaft, and the front surface thereof is cut inclined to the shaft to be in contact with the second plate 22.

The wedge 644 may be installed at the rear of the angular pipe 642. The cone 646 may allow the strand 50 to be secured to the wedge 644. That is, the wedge 644 may serve as a fixture for fixing to the strand 50, wedge 644.

In the foregoing description, all elements constituting the embodiments of the present invention are described as being combined or operating in combination, but the present invention is not necessarily limited to the embodiments. That is, within the scope of the present invention, all of the components may be configured or operated by selectively combining one or more of them. In addition, the terms "comprise", "comprise" or "having" described above mean that the corresponding component may be inherent unless specifically stated otherwise, and thus excludes other components. It should be construed that it may further include other components instead. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms used generally, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited thereto. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10: bamboo
12: through hole
20: fixing device
22: plate (second plate)
24: fixed clip
30: anchorage
40: removable inner body
42: first member
44: second member
46: wedge
48: cap
49: spring
50: stranded wire
52: tube
60: second fixing device
64: 2nd fixed clip
642: square pipe
644: wedge
646; Cone
70: spacer
80: grout injection hose

Claims (12)

Bamboo which is inserted into the drilling tool formed in the ground and the rear end projecting outward of the drilling tool;
A grout injected into the drilling tool to couple the ground and the bamboo;
And a fixing device coupled to the rear end of the bamboo to fix the rear end of the bamboo to the inlet of the drilling tool.
The bamboo is cut in the longitudinal direction and divided into a plurality of randomly arranged by binding to a plurality of binding members, thereby reducing the volume of the bamboo, the grout penetrates well into the bamboo, and the bonding force increases,
The fixing device,
A plate penetrating the rear end of the bamboo and installed in contact with the ground;
A fixing clip fixed to the bamboo of the rear plate;
The fixing clip,
A pair of half arcs, flanges extending outwardly at both ends of each of the pair of half arcs, bolt holes formed in the flanges, bolts and nuts fastened to the bolt holes,
The half arc and the flange is a bamboo soil nailing structure, characterized in that the trapezoidal shape is increased in width from one flange to the other flange is installed in close contact with the back of the plate.
delete Bamboo which is inserted into the drilling tool formed in the ground and the rear end projecting outward of the drilling tool;
A grout injected into the drilling tool to couple the ground and the bamboo;
And a fixing device coupled to the rear end of the bamboo to fix the rear end of the bamboo to the inlet of the drilling tool.
The bamboo is cut in the longitudinal direction, divided into a plurality, and arranged in a round shape, and bound by a plurality of binding members, or some of the divided into a plurality of parts by arranging by changing the front and rear to make the front and rear diameter of the bamboo to be similar Increase strength,
The fixing device,
A plate penetrating the rear end of the bamboo and installed in contact with the ground;
A fixing clip fixed to the bamboo of the rear plate;
The fixing clip,
A pair of half arcs, flanges extending outwardly at both ends of each of the pair of half arcs, bolt holes formed in the flanges, bolts and nuts fastened to the bolt holes,
The half arc and the flange is a bamboo soil nailing structure, characterized in that the trapezoidal shape is increased in width from one flange to the other flange is installed in close contact with the back of the plate.
Bamboo inserted into a drilling tool formed in the ground and the inner partition is removed;
A fixing unit coupled to the front end of the bamboo;
Removable lower body coupled to the front end of the anchorage;
A strand coupled to a front end portion of the removable inner body and having a rear end passing through the inside of the bamboo;
A grout injected into the drilling tool to couple the ground and the bamboo;
A second fixing device which is coupled to a rear end of the strand and fixes the rear end of the strand to the inlet of the drilling tool; And
Includes; the tube surrounding the outside of the strands,
The bamboo is cut in the longitudinal direction and divided into a plurality of round and arranged round, bound with a plurality of binding members,
Some of the divided into a plurality of the bamboo is arranged by changing the front and rear by changing the front and rear diameter of the bamboo to increase the minimum strength of the bamboo,
The fixing unit,
An expansion part into which the front end of the bamboo is inserted;
Shear insertion portion to the portion is inserted into the removable inner body; And
And an intermediate portion formed with a diameter smaller than the diameter of the bamboo between the expansion portion and the shear insertion portion, the fixing protrusion protruding at a predetermined interval on the outer surface thereof.
The removal formula load body,
A first member coupled to the fixing unit, a second member coupled to the front of the first member, a bolt coupled to the front of the second member, and inserted into the first member to prevent the drawing of the stranded wire A wedge, a cap coupled to the wedge and inserted with a front end of the strand, and a spring installed at the front end of the wedge,
The cap has a rib formed at the rear end, the rib is caught inside the front end of the wedge and the wedge is advanced forward when the strand is striking forward and the cap is moved forward, and the strand is drawn out,
The through-holes are formed in the bamboo, so that the grout is injected into the inside of the bamboo through the through-holes bamboo bamboo nailing structure characterized in that the strength can be removed and the strands can be removed at the same time.
delete The method according to claim 4,
The second fixing device,
A second plate penetrating the rear end of the strand and installed in contact with the ground;
And a second fixing clip fixed to the strand at the rear of the second plate.
The second fixing clip,
An angle pipe penetrating the strand wire, a wedge provided at a rear portion of the angle pipe, and a cone fixing the strand wire to the wedge,
The angular pipe is cut at right angles to the shaft and the front is inclined to the shaft is cut bamboo bamboo nailing structure, characterized in that in contact with the second plate well. delete delete delete delete The method according to claim 4,
The bamboo is removed by the inner partition, and is arranged in a round, including a portion or all of the other bamboo divided into a plurality by cutting in the longitudinal direction, characterized in that the strength is increased than the strength of one bamboo Bamboo Soil Nailing Structure.
The method according to any one of claims 1, 3, 4, 6,
Bamboo further comprises a space coupled to the outside of the bamboo to maintain the spacing interval between the drilling tool and the bamboo, and a grout injection hose coupled to the outside of the bamboo extending to the front of the drilling tool Soil nailing structure.

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