KR20200053842A - Structure of connected bamboo soil nailing - Google Patents

Abstract

The present invention is to provide a connected bamboo soil nailing structure which uses bamboo that is inexpensive and eco-friendly as a reinforcing material in order to have economic efficiency, prevent environmental pollution, and minimize influence on adjacent ground, and in particular, is used by being connected in the longitudinal direction so as to overcome the limitations of length. The connected bamboo soil nailing structure includes bamboo inserted in a bore hole formed in the ground, grout injected into the bore hole to join 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 an opening of the bore hole. The bamboo further includes a connection structure for connecting both ends that are arranged to abut each other after a plurality of the bamboo are arranged to abut each other in the longitudinal direction.

Description

Structure of connected bamboo soil nailing}

The present invention relates to a structure of connecting bamboo soil nailing, and in detail, replaces a steel reinforcement material used in the soil nailing method with eco-friendly and economical bamboo, and connects bamboo soil nailing by connecting a plurality of bamboo in the longitudinal direction. It's about structure.

In the soil nailing method, a hole is formed in the ground to prevent collapse of the ground, such as a slope or an excavation surface, and a reinforcement is inserted into the inside of the hole, and the grout is filled with a grout to reinforce the ground by integrating the ground and the reinforcement. As a construction method, in this soil nailing method, a reinforcing material formed mainly of a steel material is inserted to increase the shear strength of the original ground and suppress possible displacement.

However, in the conventional soil nailing method as described above, when the steel reinforcement is installed by invading the land boundary line, when the ground is excavated for the construction of a structure at an adjacent site, construction obstacle is caused by the reinforcement installed by invading the ground boundary line. have.

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

In addition, there is a problem that the environment due to corrosion of the steel generated by the long-term presence of the steel reinforcement in the ground can be contaminated.

In order to improve the above problems, a technique using eco-friendly materials such as bamboo has been disclosed.

However, the soil nailing structure using the bamboo has a problem in that the length of the bamboo is limited, and its diameter changes along the length direction, which is difficult to use.

Therefore, it is possible to stably reinforce the collapse of the ground by using eco-friendly materials instead of expensive steel materials, and at the same time, the soil is not polluted even for long-term use, and even if a new structure is constructed on adjacent land, the reinforcement can be quickly removed. In addition, it is necessary to develop a technology for the soil nailing structure that can overcome the limitations of the length of bamboo.

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

The present invention is to solve the above problems, by using a reinforcing material used in the soil nailing as a bamboo to replace the expensive steel, to provide a connection bamboo soil nailing structure to increase the economic efficiency.

In addition, by using eco-friendly bamboo as a reinforcing material, it is intended to provide a connection bamboo soiling structure that does not contaminate the ground.

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

In addition, by inserting a steel wire inside the eco-friendly bamboo to relax and remove the steel wire after use, it is intended to provide sufficient strength and at the same time provide an environmentally friendly connecting bamboo soiling structure.

In addition, by using eco-friendly bamboo in the longitudinal direction, it is intended to provide a connecting bamboo soiling structure that can overcome the limitations of length.

Connected bamboo soil nailing structure according to an example of the present invention, bamboo inserted into a perforated hole formed in the ground; A grout injected into the perforation hole to bond the ground and the bamboo; It is coupled to the rear end portion of the bamboo; a fixing device for fixing the rear end portion of the bamboo to the opening of the perforator; including, wherein the bamboo is connected to both ends disposed abut against each other after a plurality of long disposed in the longitudinal direction facing each other. Connection structure; may further include.

In addition, the connection structure may be characterized in that the adhesive is coated on the outer surfaces of both ends of the bamboos placed against each other, and then wound around the periphery multiple times with a woven fabric coated with the adhesive.

In addition, the connection structure may be characterized in that the protrusions around the recesses at both ends of the bamboo are gently cut out and removed.

In addition, the connection structure may be characterized in that the shells at both ends of the bamboo are removed.

In addition, the connection structure may be characterized in that the abutting portions of both ends of the bamboo are inclinedly cut out to be inclined, and when the inclined cutout is in contact with each other, an adhesive is applied.

In addition, the connection structure is characterized in that by cutting the inside of both ends of the bamboo to form a cut-out portion of the same diameter, the pipe further fits tightly in the cut-out portion, the adhesive is applied to the outer surface of the pipe can do.

In addition, the connection structure may be characterized in that a connection member is inserted into both ends of the bamboo, and an adhesive is applied between the outside of both ends of the bamboo and the inside of the connection inner tree.

In addition, the outer side of both ends of the bamboo is cut so that it is in close contact with the inner side of the connecting member, and the connecting member may be characterized in that it is bamboo.

In the present invention, economical efficiency can be increased by replacing expensive steel with bamboo.

In addition, environmental pollution of the ground can be prevented by using eco-friendly bamboo as a reinforcing material.

In addition, when constructing a new structure on adjacent ground, bamboo, which is a reinforcing material, is not a hindrance.

In addition, by using a removable stranded wire together, it achieves high strength and is environmentally friendly.

In addition, by using eco-friendly bamboo in the longitudinal direction, it is possible to overcome the limitation of the length.

1A is a side view and a cross-sectional view showing a connecting bamboo soiling structure according to an example of the present invention.
1B is a side view showing a state in which the connecting bamboo soil nailing structure of FIG. 1A is installed on the ground.
1C is a side view and a front view showing in detail the rear part of the connecting bamboo soiling structure of the present invention.
Figure 1d is a view showing a connection device and its coupling state of the connecting bamboo soil nailing structure of the present invention.
Figure 1e is a view showing a state in which the spacer of the connecting bamboo soil nailing structure of the present invention is installed.
Figure 1f is a view showing a state of interconnecting the bamboo of the present invention using a woven woven bamboo structure of the connection.
Figure 1g is a view showing a state of gently cutting the protrusions around the concave groove of the bamboo of the connection bamboo soil nailing structure of the present invention.
1H is a view showing a state in which the contact portion of the bamboo of the connecting bamboo soil nailing structure of the present invention is cut obliquely.
1I is a view showing a state in which a pipe is inserted into the inside of a bamboo connection point of the connection bamboo soiling structure of the present invention.
1J is a view showing a state in which a connection member is inserted and coupled to the outside of a bamboo connection point of the connection bamboo soiling structure of the present invention.
Figure 2a is a side view and a cross-sectional view showing a connection bamboo soil nailing structure according to another example of the present invention.
FIG. 2B is a view showing a state in which the connecting bamboo soil nailing structure of FIG. 2A is installed on the ground.
2C is a side view and a front view showing the rear portion of the connecting bamboo soil nailing structure of FIG. 2A.
Figure 2d is a side view and a front view showing in detail the coupling state of the second fixing device in the state without a square pipe in Figure 2a.
2E is a detailed view showing the anchorage of FIG. 2A.
FIG. 2F is a detailed view showing a state in which a strand is disposed on the inside after the anchorage of FIG. 2A and the removable lower body are combined with 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 through exemplary drawings. In adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible, even if they are displayed on different drawings. In addition, in describing embodiments of the present invention, when it is determined that detailed descriptions of related well-known configurations or functions interfere with understanding of the embodiments of the present invention, detailed descriptions thereof will be omitted.

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

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

Connected bamboo soil nailing structure according to an example of the present invention, bamboo 10 is inserted into a perforated hole formed in the ground; A grout injected into the perforation hole to join the ground and the bamboo 10; Including; a fixing device 20 coupled to the rear end of the bamboo 10 to fix the rear end of the bamboo 10 to the opening of the perforation; After the arrangement may further include; a connection structure that connects both ends disposed against each other.

This embodiment can be usefully applied when reinforcing a ground having a fear of soil collapse, such as a slope, an excavation surface, or a cutting surface.

In this embodiment, the connecting bamboo soil nailing structure may use a reinforcing material inserted into a drilling tool formed on the ground as the bamboo 10. Bamboo 10 is a material that can exhibit a very large tensile strength by its own fiber structure. Therefore, the bamboo 10 having a large tensile strength is fixed to the ground by grout, thereby effectively responding to ground collapse. In addition, by constructing a soil nailing structure using bamboo 10 instead of expensive steel, economical efficiency can be significantly increased.

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

Spacers 70 may be coupled to the outside of the bamboo 10. The spacer 70 may keep the spacing between the perforation tool and the bamboo 10 constant. Therefore, since the bamboo 10 is accurately settled in 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, a grout injection hose 80 may be coupled to the outside of the bamboo 10. Grout injection hose 80 may extend to the front portion of the drilling tool. Therefore, by injecting the grout densely from the front portion to the rear portion of the drilling tool, the bamboo 10 can be firmly settled on the ground. The injected grout is injected into the bamboo 10 through the above-described through hole 12 to increase the strength of the bamboo 10.

A fixing device 20 may be coupled to the rear end of the bamboo 10. The fixing device 20 can prevent the ground from collapsing by making the rear end of the bamboo 10 firmly fixed to the entrance of the drilling tool.

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 is formed of a steel plate or the like, and a through hole may be formed in the central portion.

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 arcs (semi-ellipses), flanges, bolt holes, bolts and nuts.

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

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

The bamboo 10 may further include a connection structure connecting a plurality of ends arranged opposite to each other after a plurality of pieces are arranged long against each other in the longitudinal direction. In the case of bamboo 10, the length is limited, and the diameter gradually decreases toward the head. Therefore, a case in which it is difficult to secure the required length and diameter with one bamboo 10 may occur. In this embodiment, a plurality of bamboos 10 can be connected to each other long to secure the required length and diameter.

The connection structure may be characterized in that the adhesive is applied to the outer surfaces of both ends of the bamboo 10 placed against each other, and then the circumference is wound a plurality of times with the woven fabric 18 coated with the adhesive. That is, after the adhesive is applied to both ends of the bamboo 10 to be connected, it is also possible to bond to each other by pulling the woven fabric 18 coated with the adhesive and winding it several times. The woven fabric 18 may be made of a material such as PP (Polypropylene, polypropylene) having excellent tensile strength.

In addition, the connection structure can be removed by gently cutting out the protrusions around the recesses at both ends of the bamboo 10. That is, by gently removing the protrusions of the connecting portion, the woven fabric 18 is well attached as a whole, so that the bonding force can be increased.

In addition, the connection structure can remove the shells at both ends of the bamboo (10). That is, the adhesion to the adhesive can be increased by removing the shell.

In addition, in the connection structure, the abutting portions of both ends of the bamboo 10 are formed with an inclined cutting portion 14 inclined to be cut, and the inclined cutting portion 14 is formed to be in contact with each other as a whole when glued, and an adhesive is provided. Can be applied. That is, the bamboo 10 on one side is formed with an inclined cutting portion 14 in which the outside is inclined along the circumferential direction, and the bamboo 10 on the other side is an inclined cutting portion 14 in which the inside is inclined along the circumferential direction. Can be formed. Therefore, the bamboo 10 cut out at an inclined side is connected to be inserted into the inside of a large section cut at an inclined side, the binding force is increased by a large contact area, and can have shear resistance against external forces acting in the transverse direction. have. Therefore, the separation from each other is prevented by the adhesive force of the adhesive portion of the portion in contact with the tensile force of the woven fabric 18 that winds the bamboo 10, and at the same time, the misalignment can be prevented by the interwoven structure and the woven fabric 18. This allows the interconnected bamboo 10 to secure tensile and shear resistance, thereby forming an excellent connected bamboo soiling structure.

In addition, the connection structure further includes a pipe 16 that cuts the insides of both ends of the bamboo 10 to form a cutout having the same diameter, and is tightly fitted to the cutout, and the pipe 16 An adhesive may be applied to the outer surface. That is, the shear strength of the connecting bamboo 10 can be increased by the pipe 16 connecting the two bamboos 10. In addition, the tensile strength of both bamboos 10 can also be increased by bonding between the bamboos 10 and the pipes 16 by an adhesive.

In addition, the connection structure can be connected by installing a connecting member 17 into which both ends of the bamboo 10 are inserted, and applying an adhesive between the outside of both ends of the bamboo 10 and the inside of the connecting member 17. have. The connecting member 17 increases the shear strength of the connecting portion, and the tensile strength can be increased by an adhesive between both ends of the bamboo 10 and the connecting member 17.

In addition, both ends of the bamboo 10 can be appropriately cut on the outside to make it adhere well to the inside of the connecting member 17 to increase the adhesion. That is, by minimizing the space that can flow, the adhesive force by the adhesive can be maintained stably. In addition, the connecting member 17 may be formed of bamboo. This allows the whole of the thumbnail to be nature-friendly by using the nature-friendly connecting member 17.

Connected bamboo soil nailing structure according to another example of the present invention is inserted into a perforated hole formed in the ground and the inner partition wall is removed bamboo (10); Fixing unit 30 coupled to the front end of the bamboo 10; A removable lower body 40 coupled to the front end portion of the anchorage 30; A strand 50 coupled to the removable lower body 40 and passing through the inside of the bamboo 10 and the rear end exposed to the outside of the perforation tool; A grout injected into the perforation hole to join the ground and the bamboo 10; And a second fixing device 60 coupled to the rear end of the strand 50 and fixing the rear end of the strand 50 to the inlet of the perforation tool.

In this embodiment, the differences from the above-described embodiment will be mainly described. The part not described in this embodiment can be applied by analogy with the above-described embodiment. In this embodiment, the connection structure of the above-described bamboo 10 may be used as it is.

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

The bamboo 10 of the present embodiment can remove the partition wall from the original bamboo 10 and form through-holes 12.

The bamboo 10 of this embodiment performs a role of supporting the ground even after the removal of the strand 50, so it is very effective compared to a simple removable anchor.

 When the partition wall is removed inside the bamboo 10, the strand 50 can be easily inserted. By applying prestress with the inserted strand 50, it is possible to significantly increase the structural strength of the connecting bamboo soil nailing structure.

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 injected into the bamboo 10 and the strand 50. That is, the grout injected through the through hole 12 of the bamboo 10 reinforces the stiffness of the bamboo 10 to increase the strength of the connecting bamboo soiling structure and suppress occurrence 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 connecting bamboo soiling structure.

The anchorage 30 may be coupled to the front end of the bamboo 10. The anchorage 30 may include an expansion portion, a shear insertion portion, and an intermediate portion.

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

The shear insert portion may be inserted with a removable lower body 40 to be described later. It is preferable that the thickness of the entire answer insert is thick because the removable lower body 40 should be inserted and coupled.

The intermediate portion may be formed between the extension portion and the shear insertion portion. That is, the intermediate portion is configured to connect the expansion portion and the shear insertion portion. Fixing projections may be formed at regular intervals on the outer surface of the intermediate portion. The fixing projections can increase the grout and adhesion to be injected into the inside of the perforation tool, so as to be firmly settled from the inside of the perforation tool.

A removable lower body 40 may be coupled to the front end portion of the anchorage 30. The removable lower 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 acting excessively on the bamboo 10 during the tension of the strand 50.

The first member 42 of the removable lower body 40 is inserted into and coupled to the front end insertion portion of the anchorage 30, and 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 head of the bolt is facing forward, the screw of the bolt is inserted into the inside of the second member 44 to protrude, and the spring 49 to be described later can be fitted to the protruding portion. The first member 42 is formed with an inclined groove extending forward, and a wedge 46, that is, a wedge 46 divided into a plurality may be inserted into the inclined groove. The wedge 46 can prevent the withdrawal of the strand 50. A cap 48 may be coupled to the front inner side of the wedge 46. The cap 48 may be inserted with a front end portion 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.

After the construction is completed, the removal of the strand 50 is performed by cutting the square pipe 642 and the inner strand 50 with a welding machine or the like, and then hitting a part of the cut strand 50 in front to remove the strand 50. can do.

That is, the strand 50 may be formed so that the front end portion is coupled to the removable lower body 40 and extends to pass through the inside of the bamboo 10, and then the rear end portion is exposed to the outside of the perforation tool. As the strand 50 is settled in tension, it is possible to increase the strength of the connecting bamboo soil nailing structure.

Spacers 70 may be coupled to the outside of the bamboo 10 as in the above-described embodiment. The spacer 70 may keep the spacing between the perforations and the bamboo 10 inserted into the perforations constant. Therefore, since the bamboo 10 is accurately settled in 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 portion of the drilling tool. Therefore, the grout described later can be easily injected from the front portion to the rear portion of the perforation tool. This can increase the strength of the connecting bamboo soiling structure.

A second fixing device 60 may be coupled to the rear end of the strand 50. The second fixing device 60 may make the steel wire 50 firmly fixed to the entrance of the drilling tool. The second fixing device 60 is different from the above-described fixing device 20 in that it 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 may penetrate the rear end of the strand 50 and be installed in contact with the ground. The second plate 22 is formed of a steel plate or the like, and a through hole may be formed in the central portion.

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 a square pipe 642, a wedge 644, and a cone 646.

Each pipe 642 may be formed such that its rear surface is cut at a right angle to the axis, and its front surface is cut obliquely to the axis to be in good contact with the second plate 22.

The wedge 644 may be installed at the rear of each 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 the steel wire 50 to the wedge 644.

In the above, even if all the components constituting the embodiment of the present invention are described as being combined or operated as one, the present invention is not necessarily limited to these embodiments. That is, within the scope of the present invention, all the components may be configured or operated by selectively combining one or more components. In addition, the terms "include", "consist" or "have" as described above mean that the corresponding component can be intrinsic, unless specifically stated otherwise, to exclude other components. It should not be interpreted as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as generally understood by a person skilled in the art to which the present invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted as being consistent with the contextual meaning of the related art, and are not to be interpreted as ideal or excessively formal meanings unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains may make various modifications and variations 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 spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the claims below, and all technical spirits within the equivalent range should be interpreted as being included in the scope of the present invention.

10: bamboo
12: Through hole
14: inclined cut
16: pipe
17: connecting member
18: woven fabric
20: fixture
22: Plate (second plate)
24: retaining clip
30: Settlement
40: removable lower body
42: first member
44: second member
46: Wedge
48: cap
49: spring
50: Steel Wire
52: tube
60: second fixing device
64: second fixing clip
642: square pipe
644: wedge
646; Cone
70: spacer
80: grout injection hose

Claims (8)

Bamboo inserted into the drilling tool formed in the ground;
A grout injected into the perforation hole to bond the ground and the bamboo;
It includes; a fixing device coupled to the rear end of the bamboo to fix the rear end of the bamboo to the opening of the perforation;
The bamboo is connected to each other in the longitudinal direction is arranged long and then connected to each other, the connection structure connecting the both ends disposed to each other; further comprising a connecting bamboo soiling structure. The method according to claim 1,
The connection structure is connected to each other, after applying the adhesive to the outer surface of both ends of the bamboo disposed against each other, the connection bamboo soiling structure, characterized in that the circumference is wound a plurality of times with a woven fabric coated with an adhesive. The method according to claim 1,
The connection structure is connected to the bamboo nailing structure, characterized in that by gently cutting off the protrusions around the recesses at both ends of the bamboo. The method according to claim 1,
The connection structure is connected to the bamboo nailing structure, characterized in that to remove the shell of both ends of the bamboo. The method according to claim 1,
The connection structure is a connecting bamboo soiling structure, characterized in that the abutting portions of both ends of the bamboo are inclinedly cut out to be inclined, and when the inclined cutout is in contact with each other, an adhesive is applied. The method according to claim 1,
The connection structure further comprises a pipe cut through both ends of the bamboo to form a cutout having the same diameter, and further includes a pipe that is tightly fitted to the cutout, and an adhesive is applied to the outer surface of the pipe. Bamboo nailing structure. The method according to claim 1,
The connecting structure is provided with a connecting member into which both ends of the bamboo are inserted, and a connecting bamboo soiling structure characterized in that an adhesive is applied between the outside of both ends of the bamboo and the inside of the connecting member. The method according to claim 7,
Connected bamboo soiling structure, characterized in that the outer ends of both ends of the bamboo are cut to closely adhere to the inner side of the connecting member, and the connecting member is bamboo.

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