KR20060069810A - Fixing type nailing apparatus and method of the same - Google Patents

Abstract

The present invention relates to a fixable nailing device and a construction method thereof, wherein the nail is inserted into a predetermined portion of the nail so that the nail can have a large friction force against the inner wall surface of the drilling hole, and the extension wing of the anchor is an elastic force of the circular spring. It is an object of the present invention to provide a fixed nailing device and a construction method for adding a tensile force to the deformed rebar used to nail by being unfolded by.

The present invention is a device for perforating the perforated hole on the slope of the slope, and in addition to the grouting in the inside of the device to perform reinforcement of the slope through the nailing operation for inserting the nail, the perforated hole during the outer periphery of the nail 22 A fixing unit 26 for fixing the nail 22 to a predetermined portion inside the drilling hole 4 is coupled near the end of the nail 22 inserted into the interior of the nail 4, and the fixing unit 26 is a drilling hole. It is characterized in that the repelling force of the tensile force due to the withdrawal of the nail 22 is applied to the nail 22 by being fixed to the inner wall surface of (4).

Applying the present invention, by installing the anchorage on the outer periphery of the nail, the extension wing formed in the anchorage is fixed to the inner wall surface of the drilling hole during the grouting process to effectively add tensile force to the nailing construction, due to the tensile force There is an advantage that more effectively reinforces the slope of the inclined slope through the generated repulsive force.

Description

FIXING TYPE NAILING APPARATUS AND METHOD OF THE SAME}

1 is a side cross-sectional view showing a nailing apparatus according to a conventional embodiment,

Figure 2 is a perspective view showing a coupled state of the anchoring nailing device according to an embodiment of the present invention,

Figure 3 is an exploded perspective view showing the configuration of a fixing nailing device according to an embodiment of the present invention,

Figure 4a, 4b, 4c is a process state diagram showing the construction process of the anchoring nailing device according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

2: slope, 4: drilling hole,

6: nail, 8: cement sludge,

10: plate, 20: fixed nailing device,

22: nail, 24: jamming,

26: the fixing mouth, 28: the fixing body

30: insertion hole, 32: extension wings,

34: fixed mouth, 36: fixed protrusion,

38: Wire.

The present invention relates to a fixable nailing device and a construction method thereof, and more particularly, to insert a fixing unit in a predetermined portion of the nail so that the nail can have a great frictional force against the inner wall surface of the drilling hole, the extension wing of the fixing unit is circular The present invention relates to a fixed nailing device and a construction method thereof to further add a tensile force to a deformed rebar used as a nail by being unfolded by an elastic force of a spring.

As is well known, in general, as the industry develops, it is inevitable to develop steep slopes such as mountainous areas such as complex construction, new town construction, road construction, etc., thus increasing land utilization and securing stability and comfort of residential complexes. At the same time, it is required to establish a slope stabilization method that can satisfy the constructability, economic feasibility and environmental integrity.

Grouting soil nailing, which is widely used as slope stabilization method, is a ground reinforcement method and is widely used in Europe and the United States for the purpose of reinforcing slopes and flexible support for excavation surfaces.

In other words, the grouting soil nailing used as an example of the ground reinforcement method is based on the basic concept that the soil body reinforced by the deformed rebar installed on the ground acts like an integrated retaining wall. Its utility as a surrogate structure has been proven and its application has recently been spreading.

In particular, in developed countries, where many theoretical studies on soil nailing have been conducted, they are widely used in small-scale excavation works with a depth of 20M or less, and many specialized construction companies are constructing them in the field.

On the other hand, when the conventional saw nailing method is divided by the grouting method of the drilling hole there is a pressureless method that is a grouting method by gravity and a pressurization method to apply pressure during grouting.

Here, the pressureless method is to install the soil nailing device in the drilling hole, and grouting is carried out several times (usually 2 to 5 times) by gravity to fill the drilling hole. Since construction is required to have a degree of downward slope, it is required to repeat grouting several times, so the construction period is long and the constructability is poor. As a result, it may not be possible to fill the perforated hole tightly, which may reduce the effect of nailing.

The pressurization method keeps the inside of the drill hole by pressure grouting to improve the principal surface friction with the nailing device or to improve the surrounding ground. At this time, in order to maintain a predetermined pressure (about 6-15 kg / cm 2), a packer mainly using foamed urethane or the like is used.

Nails installed on the slope of the slope are subjected to tensile and shear forces. The closer to the right angle to the slope, the shear force is received by the slope activity, and when inclined to the slope, the nail is simultaneously subjected to the tensile and shear forces.

That is, referring to FIG. 1, first, the nailing method is applied to the slope active surface, and in order to stabilize the slope, the drill hole 4 is drilled at an angle on the inclined slope active surface 2, and the drilling is performed. After the nailing construction to insert the nail 6 made of the deformed steel through the drilled hole 4, the grouting cement sludge 8 is applied, and the nail 6 is moved to the outside of the drilled hole 4 after a predetermined time. Pressurized to draw out.

Then, the nail 6 is drawn out in the A direction, and the tension force in the B direction is applied, and finally, the plate 10 is fixed to fix the nail 6 to the slope active surface 2. . That is, in the application of the saw nailing method, by applying a tensile force to the nail so that the tensile force of the nail acts on the slope-active surface side, to stabilize the slope slope.

However, in the case of the nailing method, the tensile force can be acted on by the frictional force of the cement sludge grouting the outer circumferential surface of the deformed steel nail, but the frictional force (fixing force) between the outer circumferential surface of the nail and the cement sludge is not large. There was a problem that the tension of the nail is difficult to act on the slope of the active surface side.

The present invention has been made in view of the above-described state of the art, and inserts a fastener into a predetermined portion of the nail so that the nail can have a great frictional force against the inner wall surface of the perforation hole, and the extension wing of the fastener is applied to the elastic force of the circular spring. It is an object of the present invention to provide a fixed nailing device and a construction method for adding a tensile force to the deformed rebar used to nail by unfolding.

In order to achieve the above object, according to a preferred embodiment of the present invention in the device for performing the slope slope reinforcement through a nailing operation to drill a hole in the slope of the slope, and grouting and inserting a nail therein In this case, a fixing tool 26 for fixing the nail 22 to a predetermined portion inside the drilling hole 4 near the end of the nail 22 inserted into the drilling hole 4 during the outer circumference of the nail 22. Is coupled, and the fixing unit 26 is fixed to the inner wall surface of the drilling hole 4, the repelling force of the tensile force due to the withdrawal of the nail 22 is applied to the nail 22, characterized in that A nailing device is provided.

Preferably, the fixing unit 26 has an opening formed at one side thereof, and the other end side thereof is provided with a cylindrical fixing unit body 28 having a closed closing surface, and a nail 22 is inserted at the center of the closing surface. The insertion hole 30 is drilled, and the extension wing 32 is formed on the outer periphery of the central portion of the anchorage main body 28 to the opening, each of which has a cut line of a predetermined length is formed, A circular spring 27 for applying a restoring force to unfold the outside 32 is provided inside the expansion blade 32, and is bound to an outer circumferential outer surface of the expansion blade 32 to have an inner diameter of the expansion blade 32. In order to pressurize in the same manner as the inner diameter of the anchorage main body 28, a fastener 34 made of a highly elastic ring shape is provided, and each of the plurality of rings 36 is provided at a predetermined outer peripheral portion of the fastener 34 Is formed, the ring A fixed nailing device is provided, characterized in that the wire 38 is coupled via 36.

Preferably, the extension blade 32 is formed to extend with the fixing body main body 28, the fixed nailing, characterized in that the inner diameter is further extended to extend toward the opposite end portion of the extension portion An apparatus is provided.

Preferably, the circular spring 27 is a fixed nail, characterized in that the incision portion is formed in the outer peripheral portion so that it can be retracted due to the pressing force by the fastener 34 on the outside of the extension blade (32) A ring device is provided.

Preferably, the nail 22 is in the state that the nail 22 is inserted through the insertion hole 30 of the fixing member 26 at one end thereof, so that the nail 22 is not separated from the fixing member 26. Provided is a fixable nailing device, characterized in that a locking projection 24 is formed at a predetermined portion of the outer periphery of 22.

The present invention comprises the steps of inserting the nail through the insertion hole formed in one side of the fixing unit body; Inserting a circular spring into an extension blade formed at one end of the anchorage; Inserting the fixture into the outer periphery of the extension wing of the anchorage and closing the extension wing to complete the assembly of the fixable nailing device; Inserting the anchoring nailing device into the drilling hole; Performing a grouting process of injecting cement sludge from the inside of the drilling hole; During the grouting process, the fixing tool is separated from the extension blade so that the extension blade is unfolded by the restoring force of the circular spring installed inside the extension blade; A step in which the nail is pulled out to the outside of the punching hole while the extension blade is fixed to a predetermined portion of the punching hole to apply a tensile force to the nail; A process of applying a repulsive force to a tension force applied to the nail in a direction opposite to that of the nail by fixing the anchorage; In the state where a repulsive force is applied to the nail, injecting grouting into the inside of the hole to complete grouting construction; There is provided a fixed nailing construction method comprising the process of fixing the nail by installing a plate at the inlet of the drilling hole.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail with reference to drawings.

Figure 2 is a perspective view showing a coupling state of the fixing nailing device according to an embodiment of the present invention, Figure 3 is an exploded perspective view showing the configuration of the fixing nailing device according to an embodiment of the present invention.

Referring to this, the anchoring nailing device 20 according to an embodiment of the present invention inserts the anchorage in the predetermined portion of the nail so that the nail has a large friction force against the inner wall surface of the drilling hole, and the expansion wing of the anchorage It is a device to add a tensile force to the deformed reinforcing bar used as a nail by expanding the elastic force of the circular spring.

That is, the anchoring nailing device 20 according to an embodiment of the present invention is used in the grouting nailing method used as an example of the ground reinforcement method, a region reinforced by installing a nail 22 which is a deformed rebar in the ground. In order to allow the soil body to act as an integrated retaining wall, a nail 22 is provided, and near the end of the nail 22 inserted into the perforation hole 4 during the outer periphery of the nail 22. A fixing tool 26 for fixing 22 to the predetermined portion inside the drilling hole 4 is provided.

The fixing unit 26 has an opening formed at one side thereof, and the other end side thereof is provided with a cylindrical fixing unit main body 28 having a closed closing surface, and an insertion hole into which the nail 22 is inserted at the center of the closing surface. 30 is perforated.

In addition, at the outer circumferential edge of the fixing unit main body 28 from the central predetermined portion to the opening, the extension wings 32 each having a cut line of a predetermined length are provided, and the extension wings 32 are formed in the fixing unit main body ( 28) is formed to extend, the inner diameter is further extended toward the opposite end of the extension portion.

In addition, the extension blade 32 is made of a high elastic material bar, and a high elastic material such as spring steel is included in the material, so that there is no separate external pressing force, the expansion blade 32 is the fixing unit body ( 28) and the inner diameter expands further toward the opposite end of the extended extension.

Preferably, the extension blade 32 has an inner diameter of the end portion in the unfolded state of the drilling hole 4 is equal to or larger than the inner diameter. This is because the extension blade 32 must be fixed while rubbing against the inner wall surface of the drilling hole 4 in the unfolded state.

In addition, a high elastic circular spring 27 is inserted into the expansion blade 32 to push the expansion blade 32 outward, and the expansion blade 32 is lifted by a separate external force. Part of the outer circumference of the circular spring 27 is cut so that the cut out portion 27a is formed.

On the other hand, in order to bind to the outer peripheral surface of the expansion blade 32 formed on one end of the anchorage 26 to press and press the expansion blade 32 to retract, the fastener (34) formed in a ring (ring) form Is provided, and a plurality of rings 36 are formed at the outer periphery predetermined portions of the fasteners 34, and the wires 38 are coupled through the rings 36.

In addition, in the state in which the nail 22 is inserted through the insertion hole 30 at one end of the nail 22, the nail 22 is caught by the fixing unit 26 so that the nail 22 is not completely separated from the fixing unit 26. The engaging protrusion 24 is formed.

Through this, the anchoring nailing device 20 according to an embodiment of the present invention inserts the nail 22 through the insertion hole 30 formed on one side of the fixing unit body 28, the nail 22 ) Until the locking protrusion 34 is caught by one side of the fixing body main body 28, and the locking protrusion 34 is caught by one side of the fixing body main body 28 to stop the drawing.

In this state, the circular spring 27 is positioned inside the extension blade 32 of the anchorage 26, and the fixture 34 is inserted into the anchorage main body 28 to the outer circumference of the extension blade 32. By pulling out and pressing the outer circumference of the expansion blade 32 to press the circular spring 27 installed in the expansion blade 32 so that the expansion blade 32 is folded to the inner center.

When the fastener 34 is fitted to the outer circumference of the extension blade 32, the fixing tool 26 is inserted into the drilling hole 4, and grouting construction is performed. If the wire 38 coupled to the fixture 34 is pulled out of the drilling hole 4 during the grouting construction, the fixture 34 is separated from the extension blade 32 and the extension blade 32 is unfolded by the restoring force of the circular spring 27 installed therein.

Then, the extension blade 32 is fixed to the inner wall surface of the drilling hole (4). When the nail 22 is drawn out to the outside of the drilling hole 4 in this state, the nail 22 is fixed to the fixing unit 26, and the extension blade 32 of the fixing unit 26 is drilled. Since the nail 22 is fixed to the inner wall surface of the hole 4, the nail 22 can no longer be drawn out and the draw pressure is transmitted as it is.

Accordingly, the nail 22 has a tensile force generated by the withdrawal pressure, and completes grouting of the inside of the drilling hole 4 in that state. When the grouting operation is completed, the withdrawal pressure of the nail 22 is removed.

Then, the nail 22 can reinforce the slope of the inclined slope by the repulsive force applied in the direction opposite to the tensile force, that is, the inner side of the drilling hole (4). That is, while the earth body of the area reinforced by the fixing device 26 and the nail 22 acts as an integrated retaining wall, the repulsive force against the tensile force of the nail 22 can reinforce the inclined slope more firmly.

Figure 4a, 4b, 4c is a process state diagram showing the construction process of the anchoring nailing device according to an embodiment of the present invention.

First, in order to construct a nailing through the fixing nailing device 20 according to an embodiment of the present invention, the fixing nailing device 20 should be assembled first. The assembly of the fixed nailing device 20 may be performed outdoors.

Assembly of the anchoring nailing device 20 first inserts the nail 22 through the insertion hole 30 formed on one side of the anchorage main body 28, the locking projection 34 of the nail 22 Is pulled out until it is caught by one side of the fixing body main body 28, and stops withdrawal when the catching projection 34 is caught by one side of the fixing body main body 28.

In this state, the circular spring 27 is positioned inside the extension blade 32, and the fastener 34 is inserted into the fixing body main body 28 and pulled out by the outer circumference of the extension blade 32. The outer circumference of the extension blade 32 is pressed to press the inner diameter of the extension blade 32 to be the same as the inner diameter of the anchorage main body 28. Then, the extension blade 32 is folded.

When the fixture 34 is fitted to the outer circumference of the extension blade 32, the assembly of the fixed nailing device 20 is completed, when the assembly of the fixed nailing device 20 is completed, the The fixed nailing device 20 is inserted into the drilling hole 4, as shown in Fig. 4a.

And, as shown in Figure 4b, the grouting is performed to inject the cement sludge 8 from the inside of the drilling hole (4).

During the grouting process, as shown in FIG. 4C, when the wire 38 coupled to the fixture 34 is pulled to the outside of the drilling hole 4, the fixture 34 extends 32. The extension blade 32 is unfolded by the restoring force of the circular spring 27 located therein.

Then, the extension blade 32 is fixed to the inner wall surface of the drilling hole (4). When the nail 22 is drawn out to the outside of the drilling hole 4 in this state, the nail 22 is fixed to the fixing unit 26, and the extension blade 32 of the fixing unit 26 is drilled. Since the nail 22 is fixed to the inner wall surface of the hole 4, the nail 22 can no longer be drawn out and the draw pressure is transmitted as it is.

Accordingly, the nail 22 has a tensile force generated by the withdrawal pressure, and completes grouting of the inside of the drilling hole 4 in that state. When the grouting operation is completed, the plate 10 is installed at the inlet of the punching hole 4 to fix the nail 22, and the extraction pressure of the nail 22 is removed.

Then, the nail 22 can reinforce the slope of the inclined slope by the repulsive force applied in the direction opposite to the tensile force, that is, the inner side of the drilling hole (4). That is, while the earth body of the area reinforced by the fixing device 26 and the nail 22 acts as an integrated retaining wall, the repulsive force against the tensile force of the nail 22 can reinforce the inclined slope more firmly.

On the other hand, the anchoring nailing device and the construction method according to an embodiment of the present invention is not limited only to the above-described embodiment is possible various modifications within the scope not departing from the technical gist.

As described above, the anchoring nailing device and the construction method according to the present invention is installed nailing construction by installing the anchorage on the outer periphery of the nail, the extension wing formed in the anchorage is fixed to the inner wall surface of the drilling hole during the grouting process By effectively adding a tensile force to the nail, there is an advantage that more effectively reinforces the slope of the inclined slope through the repulsive force generated by the tensile force.

Claims (6)

In the device for drilling the slope slope through the drilling hole to the slope of the slope of the slope, and grouting and inserting the nail in the inside, A fixing unit 26 for fixing the nail 22 to a predetermined portion inside the drilling hole 4 near the end of the nail 22 inserted into the drilling hole 4 during the outer circumference of the nail 22 is provided. Coupled, the anchorage 26 is fixed to the inner wall surface of the drilling hole 4, the resilient nailing, characterized in that the repulsive force of the tensile force due to the withdrawal of the nail 22 is applied to the nail 22 Device. According to claim 1, wherein the anchorage 26 is provided with an opening on one side, the other end side is provided with a cylindrical anchorage body 28 having a closed closing surface, the nail 22 in the center of the closing surface ) Is inserted into the insertion hole 30 is inserted, the outer edge from the central predetermined portion of the fixing unit main body 28 to the opening is formed with an extension blade 32 formed with a cut line of a predetermined length, respectively, A circular spring 27 for applying a restoring force to spread out the extension blade 32 is provided inside the extension blade 32, and is bound to an outer circumferential outer surface of the extension blade 32 so as to extend the blade 32. In order to pressurize the inner diameter of the same as the inner diameter of the anchorage main body 28, a fastener 34 made of a highly elastic ring shape is provided, and the outer peripheral portion of the fastener 34 has a plurality of loops, respectively. 36 is formed, and Fixed nailing device, characterized in that the wire 38 is coupled through the ring (36). 3. The fixing blade of claim 2, wherein the extension blade 32 is formed to extend with the fixing body main body 28, and has a structure in which the inner diameter is expanded to extend toward the opposite end of the extension body. Type nailing device. According to claim 2, The circular spring (27) is characterized in that the incision portion is formed in the outer peripheral portion so that it can be retracted due to the pressing force by the fastener 34 on the outside of the expansion blade (32) Fixed nailing device. The nail 22 of claim 1, wherein the nail 22 is detached from the fixing member 26 in a state in which the nail 22 is inserted through the insertion hole 30 of the fixing member 26 at one end thereof. Immobilized nailing device, characterized in that the engaging projection 24 is formed so as not to the predetermined portion of the outer periphery of the nail (22). Inserting a nail through an insertion hole formed at one side of the fixing unit body; Inserting a circular spring into an extension blade formed at one end of the anchorage; Inserting the fixture into the outer periphery of the extension wing of the anchorage and closing the extension wing to complete the assembly of the fixable nailing device; Inserting the anchoring nailing device into the drilling hole; Performing a grouting process of injecting cement sludge from the inside of the drilling hole; During the grouting process, the fixing tool is separated from the extension blade so that the extension blade is unfolded by the restoring force of the circular spring installed inside the extension blade; A step in which the nail is pulled out to the outside of the punching hole while the extension blade is fixed to a predetermined portion of the punching hole to apply a tensile force to the nail; A process of applying a repulsive force to a tension force applied to the nail in a direction opposite to that of the nail by fixing the anchorage; In a state in which a repulsive force is applied to the nail, injecting grouting into the inside of the hole to complete grouting construction; Settling nailing construction method comprising the step of fixing the nail by installing a plate at the inlet of the drilling hole.

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