KR200442085Y1 - Nut for construction of retaining wall - Google Patents

Abstract

The present invention relates to a shiatsu nut for retaining wall construction which is fastened to the free end of underground reinforcement embedded in the ground and exposed to the outside through the precast panel, and maintains the compressive force applied to the ground by the precast panel when tightening. .

The retaining wall construction acupressure nut of the present invention is a retaining wall construction acupressure for which one side is embedded in the ground and is fastened to the free end of the ground reinforcement exposed through the precast panel to the outside to maintain the compressive force acting on the ground by the tightening force. A nut, comprising: a support body configured to have an accommodating space therein while the inner end is in close contact with an outer surface of the precast panel; A fastening part formed on the support body and configured to fasten the underground reinforcement material; A tightening part configured to insert and seat a tightening tool protruding outward of the support body to apply an operating force; And a single sealant injection hole perforated on an outer surface of the support body to allow injection of the sealant introduced into the space between the precast panel and the underground reinforcement.

As a result, the tightening part protrudes to the outside, so that the tightening tool or the tightening device can be easily mounted and the tightening operation can be easily performed, thereby significantly improving workability and providing a sealant between the through-holes of the precast panel and the ground reinforcement material. Since the airtightness can be maintained by injecting, the durability of the ground reinforcement is improved, and there is an effect of maintaining a firm fixed state.

Retaining wall construction, acupressure nut, underground reinforcement, sealant injection hole

Description

Acupressure nut for retaining wall construction {NUT FOR CONSTRUCTION OF RETAINING WALL}

1 is a perspective view showing the acupressure nut for retaining wall construction according to an embodiment of the present invention;

2 is a cross-sectional view showing the acupressure nut for the retaining wall construction according to an embodiment of the present invention;

Figure 3 is a cross-sectional view for explaining the use state of the shiatsu nut for retaining wall construction according to an embodiment of the present invention;

4 is an enlarged view of a portion A of FIG. 3;

5 is a longitudinal cross-sectional view of portion B of FIG.

<Description of Symbols for Major Parts of Drawings>

10: acupressure nut 12: support body

12a: receiving space 12b: seating ring

13: Extension 14: Fastening

16: Tightening part 16a: Tool seat

18: Sealant injection hole 20: Precast panel

22: through hole 30: underground reinforcement

40: Sealant 51: Inclined surface

52: drilling hole

The present invention relates to a shiatsu nut for retaining wall construction, and more particularly, is fastened to a free end of underground reinforcement embedded in the ground and exposed to the outside through the precast panel, and applied to the ground by the precast panel when tightened. It relates to an acupressure nut for retaining wall construction to maintain a compressive force.

In general, when retaining walls or slope reinforcement works constructed to prevent ground collapse during construction of roads, buildings, etc., the structure and ground can be fixed by anchoring to secure the structure and prevent prestress. ) To prevent deformation of the surrounding ground.

Earth-bolt construction method is applied to PEM retaining wall using precast panel by anchoring method.

Underground reinforcement construction method is to form a drilled hole in the cut slope, insert the underground reinforcement into the drilled hole and grout, insert the precast panel into the free end of the underground reinforcement and fasten the acupressure nut to fix it. do.

As the acupressure nut applied to the method of constructing underground reinforcement, a hexagon nut inserted into a recessed groove formed in the center of the outer surface of the precast panel and fastened to the underground reinforcement is used as shown in Korean Patent Publication No. 10-0468035. .

However, since the hexagon nut is inserted into the concave groove on the precast panel and is fastened, it is difficult to insert the tightening tool or the fastening device, and it is difficult to apply the tightening force even in the inserted state. Fastening operation for the re-introduction of is also very difficult problem.

In addition, injection of a sealant for maintaining the airtightness of the gap formed between the outer surface of the ground reinforcement inserted into the through hole of the precast panel and the through hole is required. Since the front part of the block is blocked, the injection of the sealant is impossible, and thus it is not possible to maintain a stable fixed state, and the durability of the underground reinforcement may be reduced due to the inflow of groundwater.

The present invention has been proposed in view of the above-mentioned contents, and the object of the present invention is to provide an acupressure nut for retaining wall construction that is improved in workability and maintained in a fixed state by easily performing a fastening operation.

Another object of the present invention is to insert the sealant into the gap between the through-hole of the precast panel and the ground reinforcement, so that the pressure-bearing nut for retaining wall construction can be improved to improve the durability of the ground reinforcement and maintain a firm fixed state. To provide.

In order to achieve the above object, the retaining wall construction pressure nut of the present invention has a compressive force acting on the ground by tightening force is fastened to the free end of the ground reinforcement exposed to the outside through one side is embedded in the ground and through the precast panel A retaining wall construction acupressure nut to be maintained, comprising: a support body configured to form a receiving space therein in a state where an inner end is in close contact with an outer surface of the precast panel; A fastening part formed on the support body and configured to fasten the underground reinforcement material; A tightening part configured to insert and seat a tightening tool protruding outward of the support body to apply an operating force; And a single sealant injection hole punctured on an outer surface of the support body to allow injection of the sealant introduced into the space between the precast panel and the underground reinforcement.

The fastening part may include an inner circumferential surface of the tightening part and a female screw part formed on an inner circumferential surface of an extension part extending into the support body so as to be in line with the tightening part.

In the retaining wall construction pressure nut of the present invention as described above, the support body is formed in the peripheral end of the inner end of the conical body has a seating ring protruding inward more than the protruding length of the extension, the seating ring is the precast In a state in which the panel is seated, an inner end of the extension part may be spaced apart from an outer surface of the precast panel so that an injection path of the sealant flowing into the through hole of the precast panel through which the underground reinforcement penetrates may be formed.

The tightening part may be formed in a nut shape having a plurality of tool seating surfaces on an outer circumferential surface thereof.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention in detail.

1 is a perspective view showing a retaining wall construction pressure nut according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing a retaining wall construction pressure nut according to an embodiment of the present invention.

1 and 2, the retaining wall construction acupressure nut 10 according to an embodiment of the present invention, the support body 12, the fastening portion 14, and the tightening portion 16 is formed to include, One side is buried in the ground and is fastened to the free end of the ground reinforcement exposed through the precast panel to the outside.

The support body 12 is configured such that the receiving space 12a is formed therein in a state where the inner end is in close contact with the outer surface of the precast panel.

In the present embodiment, the outer shape is formed in a substantially conical shape, but is not limited thereto, and may be formed in various shapes such as hemispherical shape and square pyramid shape.

The fastening part 14 is a part formed on the support body 12 and directly fastened to the free end of the underground reinforcement material. The fastening part 14 is formed so as to be in line with the inner peripheral surface of the fastening part 16 and the fastening part 16. It consists of a female screw portion formed on the inner circumferential surface of the extension portion 13 extending into the interior of 12).

In this way, the female screw portion forming the fastening portion 14 is also formed on the extension portion 13 protruding toward the receiving space 12a side of the support body 12 in addition to the tightening portion 16, the length of the reinforcement underground The length of engagement with is also increased so that the precast panel can be firmly fixed.

The tightening portion 16 is a configuration in which a tightening tool or a tightening device that protrudes outwardly of the support body 12 to apply an operating force is inserted and seated, and has a nut shape having a plurality of tool seating surfaces 16a on the outer surface of the protrusion. It can be formed as.

In this embodiment is formed in the form of a hexagon nut that can be inserted, installed in the tightening tool or tightening device in various directions.

In addition, a sealant injection hole 18 for injecting a sealant for filling a gap formed between the through hole of the precast panel inserted into the underground reinforcement and the ground reinforcement is formed in the pressure-bearing nut 10 for the molten wall construction of the present invention. do.

Sealant injection hole 18 is formed in the shape of a circular hole that is drilled to have a predetermined inner diameter on the outer surface of the support body 12, the inner diameter is preferably such that the outer diameter of the outlet of the sealant injection tool is inserted.

3 is a cross-sectional view illustrating a state of use of the retaining wall construction pressure nut according to an embodiment of the present invention, FIG. 4 is an enlarged view of portion A of FIG. 3, and FIG. 5 is a longitudinal cross-sectional view of portion B of FIG. 3 and 4, the mounting ring portion 12b protruding inward more than the protruding length of the extension portion 13 is formed integrally on the inner edge of the support body 12.

As such, when the seating ring part 12b protrudes inwardly than the inner end of the extension part 13, the seating ring part 12b is mounted on the outer surface of the precast panel 20. Injection path of sealant 40 injected into the gap between the through hole 22 of the precast panel 20 and the outer surface of the ground reinforcement 30 while the inner end is spaced apart from the outer surface of the corresponding precast panel 20. Will form.

Hereinafter, the operation of the retaining wall construction pressure nut according to an embodiment of the present invention.

Referring to Figure 3, the retaining wall construction pressure nut 10 according to an embodiment of the present invention is installed on the ground so that the form is fitted into the free end of the underground reinforcement 30 exposed to the outside precast panel 20 In the state in which the) is installed, after backfilling is performed between the inclined surface 51 of the ground and the precast panel 20 using a useful soil, a tension is applied to the ground reinforcement material 30 by a jack or the like to tension it. .

The compressive force is applied to the ground by the precast panel 20 by fastening the retaining wall construction pressure nut 10 on the free end of the tensioned underground reinforcement 30 in close contact with the outer surface of the precast panel 20. do.

In more detail, the installation process of the underground reinforcement material 30 is formed, and the drilling hole 52 is formed in the cut slope 51, and the underground reinforcement material 30 having a predetermined length suitable for the drilling hole 52 is inserted. do. At this time, the spacer 60 is installed at regular intervals such that the underground reinforcement 30 is positioned at the center portion of the drilling hole 52.

As shown in FIGS. 3 and 5, the spacer 60 protrudes from the contact piece 64 in close contact with the inner circumferential surface of the drilling hole 52 to the outside of the round bar 62 having the bolt insertion hole 62a formed at the center thereof. In the center of the contact piece 64, a plurality of hose insertion grooves 66a are formed with a fixing ring 66 in which the underground reinforcement material 30 is formed on the bolt insertion hole 62a of the round bar 62. Is inserted, the mortar supply hose 70 is supplied to the concrete mortar is filled in the interior of the drilling hole 52 in the hose insertion groove (66a) of the fixing ring (66).

In addition, at the inlet side of the boring hole 52 formed in the ground, a blocking pipe 80 having a cutout groove formed therein through which the mortar supply hose 70 is drawn is installed, and the concrete mortar is supplied through the mortar supply hose 70 to drill the hole. If the curing is performed after the grouting (Grouting) in the hole 52, the installation work of the underground reinforcement 30 is completed.

As described above, after the foundation work is performed on the inclined surface where the underground reinforcement material 30 is installed and the foundation block 100 is installed, the underground reinforcement material is extended by the coupler 90 at the exposed end of the underground reinforcement material 30. In the state, the free end is installed so that the free end is exposed to the outside.

On the other hand, in the state where the precast panel 20 is installed, the fastening portion 14 of the retaining wall construction pressure nut 10 is positioned at the free end of the underground reinforcing material 30, and the tightening tool or the tightening portion 16 is tightened. When mounting the device to perform the tightening operation, as shown in Figure 4, the seating ring portion 12b is in close contact with the inner surface of the precast panel 20. At this time, the ends of the extension part 13 are spaced apart from the through hole 22 side of the precast panel 20 at regular intervals to form an injection path.

In this state, when the sealant is injected through the sealant injection hole 18 formed on the outer surface of the support body 12, the precast panel 20 and the ground are received through the receiving space 12a of the support body 12. Sealant 40 is introduced into the gap between the outer surface of the reinforcing material 30 to be filled.

When the fastening of the retaining wall construction pressure nut 10 is completed, the end portion of the ground reinforcement material 30 is cut while leaving only a predetermined portion, and the end portion of the cap formed of a material such as brass, copper, or plastic ( 31) to prevent corrosion and to prevent safety accidents during construction.

What has been described above is just one embodiment for implementing the retaining wall construction pressure nut according to the present invention, the present invention is not limited to the above embodiment, as claimed in the following claims of the present invention Without departing from the gist, any person having ordinary knowledge in the field to which the present invention belongs will have a technical spirit of the present invention to the extent that various modifications can be made.

The retaining wall construction nut of the present invention has an effect that the tightening part is protruded to the outside, so that the tightening tool or the tightening device can be easily installed and the tightening operation can be easily performed, thereby significantly improving workability.

In addition, the sealant may be injected into the gap between the through-hole of the precast panel and the ground reinforcement to maintain the airtightness, thereby improving durability of the ground reinforcement and maintaining a firm fixed state.

Claims (4)

In the retaining wall construction acupressure nut which is buried in one side of the ground and fastened to the free end of the ground reinforcement exposed through the precast panel to the outside, the compressive force acting on the ground by the prestress is maintained. A support body configured to have an accommodating space therein while the inner end is in close contact with the outer surface of the precast panel; A fastening part formed on the support body and configured to fasten the underground reinforcement material; A tightening part configured to insert and seat a tightening tool protruding outward of the support body to apply an operating force; And And a single sealant injection hole formed on the outer surface of the support body to enable injection of the sealant introduced into the space between the precast panel and the underground reinforcement. The method of claim 1, Retaining wall construction pressure nut is characterized in that the fastening portion is composed of the inner peripheral surface of the tightening portion and the female screw portion formed on the inner circumferential surface of the extension portion extending into the support body to be in line with the tightening portion. The method of claim 2, The supporting body has a seating ring portion protruding further inwardly than the protruding length of the extension portion at the inner edge of the body having a conical shape, and the seating ring portion is seated on the precast panel, and the inner end portion of the extension portion. The acupressure nut for retaining wall construction, characterized in that the injection path of the sealant introduced into the through-hole side of the precast panel is spaced apart from the outer surface of the precast panel and the ground reinforcement penetrates. The method according to any one of claims 1 to 3, The tightening part is a retaining wall construction pressure nut, characterized in that formed in the shape of a nut having a plurality of tool seating surface on the outer peripheral surface.

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