KR101039683B1 - Cave in cone, anchor assembly using the same and slope reinforcement construction method using anchor assembly - Google Patents

Abstract

The present invention relates to a cave-in cone having improved bonding force to the ground, an anchor assembly using the same, and a slope reinforcement construction method using the anchor assembly. Cave in the cone according to an embodiment of the present invention comprises an insertion cone and a power transmission block. Here, the insertion cone is formed in the upper groove, the through-hole is formed along the direction of the central axis so that the nail is provided through, the outer groove is formed in a conical shape to be inserted to extend the earth hole. And, the power transmission block is formed in a shape corresponding to the coupling groove is closely coupled to the coupling groove, the power transmission groove through which the power transmission device is coupled is formed in the center so that the rotational force provided from the power transmission device is transmitted to the insertion cone. do.

Description

Cave-in cone, anchor assembly using cave-in cone and method to reinforce slope using anchor assembly}

The present invention relates to a cave in cone, an anchor assembly using the same and an inclined surface reinforcement construction method using the anchor assembly, and more specifically, a cave in cone with improved bonding force to the ground, the slope assembly using the anchor assembly and anchor assembly using the same It is about a method.

As the industry develops, it is inevitable to develop slopes such as mountain roads such as foundation roads and complexes. Currently, the sliding reality of slopes is constantly occurring regardless of time and place, and acts as a threat to life and property. Doing.

Accordingly, among the methods for suppressing the collapse and sliding of the slope, soil nailing, which is recognized as an advantageous method in terms of shortening air and reducing costs, is widely used.

Soil nailing has been used for temporary scaffolding structures, foundation burrows, etc., but in recent years, the application targets such as slope reinforcement of roads, rock reinforcement of railways, dams, tunnel shafts, etc. have been expanded.

Soil nailing installs a reinforcement body (soil nail structure) on the ground to form the composite reinforcement ground while making the most of the strength of the ground, thereby increasing the shear and tensile strength of the ground, thereby restraining displacement and preventing the ground from loosening. Soil nail structures have been developed and provided in various ways to reinforce the lack of stability due to the sedimentation of soil or loss of soil.

However, the conventional soil nail structure has the following problems.

First, the conventional Soil nail structure is subjected to grouting after inserting a nail or anchor body after drilling, in which case a part of the perforation near the surface is recessed when the base is soil, weathered rock, etc. There was a problem that the grouting solution is not injected well collapsed.

Second, even after grouting, there was a problem in that the surface of the surface was irregular because it was scoured at the time of tension and the tension plate could not be installed, and the work was repeated to re-tension or reinforce the ground after the tension.

Third, an additional process such as installing a lattice block or acupressure block is performed to reinforce the scoured surface, and there is a problem that the appearance is not good due to the installation of the block.

In order to solve the above problems, the technical problem to be achieved by the present invention is to provide a cave-in cone, improved anchoring force with the ground, the anchor assembly using the same and the slope reinforcement construction method using the anchor assembly.

In order to solve the above technical problem, the present invention is a coupling groove is formed in the upper portion, a through hole is formed along the direction of the center axis so that the nail is provided through, the groove is formed in the outer spiral to expand the earth hole Conical insertion cone which is; And formed in a shape corresponding to the coupling groove is closely coupled to the coupling groove, the power transmission groove through which the power transmission device is coupled is formed in the center so that the rotational force provided from the power transmission device is transmitted to the insertion cone. It provides a cave in cone comprising a power transmission block.

Here, the inner side of the insertion cone is preferably provided with a reinforcing member which is provided spirally on the outer side of the through hole along the through hole so that the strength of the insertion cone is reinforced.

And, the present invention is a nail located inside of the perforations formed in the ground; An anchor body coupled to one end of the nail positioned inwardly of the perforation and fixed to the perforation; A conical insertion cone is formed in the upper portion, and a through hole is formed along the direction of the central axis so that the nail is penetrated, and a groove is formed in the outer side so as to extend the earth hole in the upper portion of the perforation. The power transmission block is formed in a shape corresponding to the groove and closely coupled to the coupling groove, and a power transmission groove through which the power transmission device is coupled is formed at the center thereof so that the rotational force provided from the power transmission device is transmitted to the insertion cone. Cave in cone consisting of; And it is provided on the top of the cave in cone, it provides an anchor assembly comprising a tightening unit for pressing the pressing plate coupled to the other end of the nail to the cave in cone fixed to the ground.

Here, the inner side of the insertion cone is preferably provided with a reinforcing member which is provided spirally on the outer side of the through hole along the through hole to reinforce the strength of the insertion cone when the nail is tensioned.

In addition, the present invention comprises the steps of making a perforation on the inclined surface; A nail and an anchor body are inserted into the perforation, and the anchor body coupled to one end of the nail is fixedly coupled to an inner surface of the perforation; Primary grouting the inside of the perforation; Conical grooves are formed in the upper portion, and through holes are formed along the central axis direction so that the nails are provided therethrough, and grooves are formed in a spiral shape to extend the earth and sand holes. It is formed in the shape is tightly coupled to the coupling groove, the power transmission groove is formed in the center through which the power transmission device is coupled to include a power transmission block for transmitting the rotational force provided from the power transmission device to the insertion cone. The cave-in cone is coupled to the other end of the nail exposed to the outside of the inclined surface, the power transmission device is coupled to the power transmission groove formed in the power transmission block and rotated so that the insertion cone is inserted while expanding the earth hole in the upper portion of the perforated To be combined; Secondary grouting and curing the inner side of the perforation and soil layer; Then, the pressure plate and the tightening unit are sequentially coupled to the other end of the nail to the upper part of the cave in cone, and the tension plate is pressed to tension the nail so that the pressure plate presses the cave in cone to be fixed to the ground. It provides a slope reinforcement construction method comprising the step.

Referring to the effects of the cave in cone, the anchor assembly using the same and the slope reinforcement construction method using the anchor assembly according to the present invention.

First, by inserting a cave-in cone on the upper part of the perforation to consolidate and reinforce the vicinity of the surface, the loss of grouting near the surface due to the depression of the perforation hole can be prevented, and the irregular tension condition due to the depression near the surface can be improved. have. In addition, retension may be prevented due to settlement after tensioning, and defects due to scouring may also be prevented. In addition, aesthetics may be improved and construction costs may be reduced because a separate block is not installed during tensioning.

Second, a groove is formed on the outer surface of the insertion cone spirally to facilitate insertion of the insertion cone, as well as the bond force with the ground can be stronger as the soil is bitten into the groove, the supporting force can be increased.

Third, since a spiral reinforcing member is further provided inside the insertion cone to reinforce the strength of the insertion cone, the insertion cone may be prevented from being damaged by the compressive force applied to the insertion cone during nail tension. .

1 is an exploded perspective view showing a cave in cone according to an embodiment of the present invention.
Figure 2 is a front view showing the cave in cone according to an embodiment of the present invention.
Figure 3 is an exemplary cross-sectional view showing a cave in cone according to an embodiment of the present invention.
4 is an exemplary view showing a state in which the anchor assembly is installed according to an embodiment of the present invention.
Figure 5 is a flow chart showing the slope reinforcement method sequence using the anchor assembly according to an embodiment of the present invention.

With reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above technical problem will be described.

1 is an exploded perspective view showing a cave in cone according to an embodiment of the present invention, Figure 2 is a front view showing a cave in cone according to an embodiment of the present invention, Figure 3 according to an embodiment of the present invention It is a cross-sectional illustration which shows a cave in cone.

As shown in Figures 1 to 3, the cave in the cone 10 is preferably made of an insertion cone 11 and the power transmission block (16). Here, the insertion cone 11 is preferably made of a cone shape and the groove 13 is formed spirally on the outside. And, the upper portion of the insertion cone 11 is preferably provided with the power transmission block (16). In addition, the power transmission groove 17 is preferably formed on the upper portion of the power transmission block 16, the power transmission device is delivered to the power transmission groove 17 so that the rotational power is transferred to the insertion cone (11). As it rotates, the earth and sand are expanded and inserted. At this time, the groove 13 is not only to facilitate insertion into the earth and sand holes while the insertion cone 11 is rotated, it is to increase the coupling force and the support force with the soil layer.

In detail, the cave-in cone 10 preferably comprises an insertion cone 11 and a power transmission block 16.

Here, the insertion cone 11 is preferably smaller than the diameter of the lower than the upper surface is formed to be inclined, accordingly, the insertion cone 11 may be formed in a conical shape as a whole.

Through this, the insertion cone 11 may be inserted into the soil layer while reducing the resistance with the soil.

In addition, it is preferable that the through hole 12 is formed through the upper and lower portions in the direction of the central axis of the insertion cone 11. Here, the through hole 12 is provided with a nail (30 in FIG. 4) to be described later penetrates.

In addition, the coupling groove 14 is preferably formed in the upper portion of the insertion cone 11, the coupling groove 14 is preferably formed in the shape of a polygon, for example, may be formed in the shape of a square. .

In addition, the power transmission block 16 is preferably coupled to the coupling groove 14.

In addition, the power transmission block 16 is preferably a power transmission groove 17 is formed.

In addition, a power transmission device (not shown) is preferably coupled to the power transmission groove 17, and a rotational force and a pressing force are provided from the power transmission device.

Accordingly, the power transmission block 16 can be rotated by the rotational force provided from the power transmission device.

As the power transmission block 16 rotates, the insertion cone 11 coupled to the power transmission block 16 can also rotate.

Here, the power transmission block 16 is preferably formed so that the outer shape corresponds to the coupling groove (14).

That is, when the coupling groove 14 is formed in a quadrangular shape, the power transmission block 16 is also formed in a square shape so as to be tightly coupled to the coupling groove 14, and from this, the power transmission device The rotational force provided can be stably and effectively transmitted to the insertion cone 11 through the power transmission block 16.

In addition, the outer surface of the insertion cone 11 is preferably a spiral groove 13 is formed.

At this time, the depth, width and pitch of the groove 13 may be appropriately formed according to the soil layer to be inserted into the insertion cone (11).

Therefore, when the insertion cone 11 is inserted into the soil layer while the insertion cone 11 is rotated by the rotational force and the pressing force provided by the power transmission device, the soil resistance may be reduced while the soil is introduced into the groove 13. Insertion cone 11 can be inserted well in the soil layer.

In addition, the insertion cone 11 may be firmly inserted and fixed to the soil by the coupling force between the groove 13 and the soil to be introduced into the groove 13.

Here, the insertion cone 11 is preferably made of concrete, but is not necessarily limited thereto, and may be manufactured by a PC (precast concrete) method when manufacturing the concrete.

On the other hand, it is preferable that the reinforcing member 19 is further provided on the inside of the insertion cone (11).

Here, the reinforcing member 19 is preferably formed in a spiral shape, it is preferable to be provided to surround the through hole 12 on the outside of the through hole 12.

In addition, the reinforcing member 19 is preferably made of a steel material, reinforcement may be used during manufacturing.

Accordingly, the reinforcing member 19 can reinforce the strength of the insertion cone 11 so that the insertion cone 11 does not break even if a compressive force is applied to the insertion cone 11 so that durability is improved. can do.

Figure 4 is an exemplary view showing a state in which the anchor assembly according to an embodiment of the present invention is installed.

As shown in Figure 4, the anchor assembly 20 is preferably made of a nail (nail) 30, the anchor body 40, the cave in cone 10 and the tightening unit 55.

Here, the nail 30 may be a rod (棒) having a sufficient tensile strength and the like.

In addition, the nail 30 may be further formed with a rib (not shown) on the outer surface so that the strength can be reinforced, accordingly, when installing, a reinforcing bar can be used as the nail 30.

The nail 30 is inserted into the perforation 100, and the anchor body 40 is coupled to one end of the nail 30 deeply inserted into the perforation 100.

At this time, the anchor body 40 is preferably formed to be fixed by the strong coupling force with the perforation 100, if it satisfies this function can be made in various forms without being limited to a specific shape.

Accordingly, the anchor body 40 may be, for example, one or more blades are formed on the outer surface, the blade is coupled to the inner surface of the perforation 100 while expanding.

Alternatively, the anchor body 40 may have a form in which one or more wedges are formed at the front and coupled to the bottom surface of the perforation 100.

Further, the anchor body 40 may be a combination of the two forms described above, such as may be made in various ways.

The anchor body 40 is to maintain a state that is firmly fixed to the perforation 100 to ensure a stable and strong tensile force from the nail 30.

On the other hand, the cave in the cone 10 is preferably coupled to the other end of the nail 30 near the inlet of the perforation 100.

In this case, the other end of the nail 30 is penetrated through the through hole (12 of FIG. 1) so that the cave in cone 10 may be provided near the entrance of the perforation 100.

Then, when the rotational force and the pressing force is transmitted from the power transmission device to the power transmission groove (17 of FIG. 1), the insertion cone 11 can be rotated while the power transmission block 16 is rotated.

Here, when the insertion cone 11 is rotated, the constituent material (for example, soil) of the earth and sand near the inlet of the perforation 100 is bitten into the groove 13 and the insertion cone 11 is deep in the ground. Will be inserted.

In addition, the groove 13 and the soil seized into the groove 13 are strongly coupled, so that the coupling force between the insertion cone 11 and the ground is increased, so that the insertion cone 11 can be firmly fixed. Through this, the bearing capacity can also be increased.

That is, the groove 13 not only allows the insertion cone 11 to be easily inserted while expanding the earth and sand holes, but also increases the coupling force with the earth and sand.

At this time, the power transmission groove 17 may be formed through the upper and lower surfaces of the power transmission block (16 in FIG. 1), through which, even if the insertion cone 11 is inserted into the earth hole, the nail 30 The other end of the can be protruded to the top of the power transmission block (16).

In addition, the power transmission device is also to ensure that the other end portion of the nail 30 is not bent or damaged while the rotational force and the pressure is transmitted to the power transmission block 16, for this purpose various structural applications are possible. Of course.

In addition, the other end of the nail 30 protruding to the upper portion of the cave in cone 10, the pressing plate 50 and the tightening unit 55 for tightening to press the pressing plate 50 to be in close contact with the ground This can be combined.

Here, through holes (not shown) are formed in the center of the pressing plate 50 and the tightening unit 55 so that the other end of the nail 30 can pass therethrough.

In addition, the pressing plate 50 is provided at the other end of the nail 30 so that the lower surface is in close contact with the upper surface of the cave in cone 10, the tightening unit 55 is the lower surface of the pressing plate 50 It is provided to be in close contact with the upper surface of the.

At this time, it is preferable that a screw thread is formed on the inner surface of the through hole of the tightening unit 55 and the outer surface of the other end of the nail 30 to be screwed together.

Accordingly, when the pressure unit 50 is pushed downward while the tightening unit 55 is rotated in the locking direction, the pressure plate 50 simultaneously presses the cave-in cone 10 and the ground.

In addition, the nail 30 is pulled when the pressure plate 50 is in close contact with the ground and continues to tighten the tightening unit 55. At this time, the anchor body 40 is fixed to the perforation 100. Since the nail 30 has a tensile force is generated.

 In addition, by the tensile force of the nail 30, the pressing plate 50 is able to strongly press and reinforce the ground.

In addition, the cave-in cone 10 is to consolidate the vicinity of the surface of the inclined surface to be reinforced near the surface.

At this time, the strength of the insertion cone 11 is reinforced by the reinforcing member 19 provided inside the insertion cone 11, thereby applying to the insertion cone 11 when the nail 30 is tensioned. The insertion cone 11 can be prevented from being damaged due to the compression force, etc., and furthermore, the ground can be pressed more strongly.

Figure 5 is a flow chart showing a slope reinforcement method sequence using an anchor assembly according to an embodiment of the present invention.

As shown in Figure 5, after the step (S110) to make a perforation on the inclined surface, the nail and the anchor body is inserted into the perforation, the step (S120) to ensure that the anchor body is coupled to the inner surface of the perforation proceeds This is preferred.

And, it is preferable that the step (S130) of primary grouting the inside of the perforation is made.

Here, the primary grout is preferably made to about 0.5 ~ 1m below the ground surface from the bottom of the perforation.

Then, the cave-in cone is coupled to the end of the nail exposed to the outside of the inclined surface, the power transmission device is coupled to the power transmission groove formed in the power transmission block and rotated by inserting the insertion cone while expanding the earth hole in the upper portion of the perforation It is preferable that the step (S140) is made to be combined.

Then, it is preferable that the step (S150) of secondary grouting and curing the inner side of the perforated and soil layers.

Through this, insolation of the grouting of the ground surface due to the depression of the perforation can be prevented, and irregular tensile conditions due to the depression of the ground surface can be improved.

In addition, the pressing plate and the tightening unit is sequentially coupled to the upper portion of the cave in cone, and tightening the tightening unit to tension the nail so that the pressing plate to press the cave in cone to be fixed to the ground (S160) Is preferred.

Accordingly, the vicinity of the surface can be consolidated and reinforced by the cave-in cone to prevent retension due to settlement and to prevent defects caused by scouring after tensioning.

In addition, since a separate block does not need to be installed, the aesthetics may be improved, and construction costs may also be reduced.

As described above, the present invention is not limited to the above-described specific preferred embodiments, and various modifications by those skilled in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Implementations are possible and such variations are within the scope of the present invention.

10: Cave In Cone 11: Insert Cone
12: through hole 13: groove
14: coupling groove 16: power transmission block
17: power transmission groove 19: reinforcing member
20: anchor assembly 30: nail
35: insertion unit 40: anchor body
50: pressure plate 55: tightening unit
100: perforated

Claims (5)

Conical insertion groove is formed in the upper portion, the through-hole is formed along the direction of the central axis so that the nail is provided through, the outer side is formed with a conical insertion cone is inserted into the groove to expand the earth and sand; And
Is formed in a shape corresponding to the coupling groove is closely coupled to the coupling groove, the power transmission groove is formed in the center through which the power transmission device is coupled so that the rotational force provided from the power transmission device is transmitted to the insertion cone Cave in cone comprising a transfer block. The method of claim 1,
Cave-in cone, characterized in that the inner side of the insertion cone is further provided with a reinforcing member is provided spirally on the outer side of the through hole along the through hole to reinforce the strength of the insertion cone. A nail located inside the perforation formed in the ground;
An anchor body coupled to one end of the nail positioned inwardly of the perforation and fixed to the perforation;
A conical insertion cone is formed in the upper portion, and a through hole is formed along the direction of the central axis so that the nail is penetrated, and a groove is formed in the outer side so as to extend the earth hole in the upper portion of the perforation. The power transmission block is formed in a shape corresponding to the groove and closely coupled to the coupling groove, and a power transmission groove through which the power transmission device is coupled is formed at the center thereof so that the rotational force provided from the power transmission device is transmitted to the insertion cone. Cave in cone consisting of; And
And a tightening unit provided on an upper portion of the cave in cone and configured to press the pressing plate coupled to the other end of the nail to fix the cave in cone to the ground. The method of claim 3,
Anchor assembly, characterized in that the inner side of the insertion cone is further provided with a reinforcing member to the outer side of the through hole along the through hole so that the strength of the insertion cone is reinforced when the nail is tensioned. Making perforations on slopes;
A nail and an anchor body are inserted into the perforation, and the anchor body coupled to one end of the nail is fixedly coupled to an inner surface of the perforation;
Primary grouting the inside of the perforation;
The cave-in cone according to claim 1 or 2 is coupled to the other end of the nail exposed to the outside of the inclined surface, the power cone is coupled to the power transmission groove formed in the power transmission block and rotated by inserting the cone into the perforated Inserting and expanding the upper earth hole;
Secondary grouting and curing the inner side of the perforation and soil layer; And
Coupling the pressure plate and the tightening unit to the other end of the nail in order to the top of the cave in cone, and tightening the tightening unit to tension the nail so that the pressure plate presses the cave in cone to be fixed to the ground. Slope reinforcement construction method comprising a.

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