KR102187757B1 - Method And Apparatus For Removing Reinforced Concrete Pile - Google Patents

Abstract

The present invention relates to a reinforced concrete pile removing method and a device thereof. The method comprises: a preparation step of exposing one end of a reinforcing bar to the ground by crushing a head-side concrete portion of a pile buried in the ground by inserting the at least two reinforcing bars into the concrete portion in a longitudinal direction of the concrete portion; a casing insertion step of burying a casing in the ground so that the pile is inserted into an inner circumferential side of the casing by matching the center of the hollow cylindrical casing having an inner diameter greater than the outer diameter of the pile and the center of the pile; a drawing portion fastening step of fastening drawing portions to the reinforcing bars, respectively; a reinforcing bar removal step of drawing the other end of the reinforcing bar to the ground by moving the drawing portion upward and rotating the drawing portion in one direction based on the center of the casing; and a casing removal step of drawing the casing to the ground.

Description

Method And Apparatus For Removing Reinforced Concrete Pile}

The present invention relates to a method and apparatus for removing reinforced concrete piles.

In general, when constructing reinforced concrete structures or other architectural and civil engineering structures, a method of embedding PHC piles, steel pipe piles, H-beams, reinforced concrete piles, etc. in the ground to solidify the foundation of the ground to be built. Perform the foundation work.

Conventionally, when performing foundation work, the type of foundation and its construction method were determined according to the ground condition after surveying the condition of the ground in a corresponding region to construct the foundation, but in recent years, reconstruction and redevelopment have been booming in large cities.

During such redevelopment and reconstruction, structures on the ground are crushed using various crushing devices to discard and recycle construction waste, but there is a problem that it is difficult to remove the foundation buried in the ground.

In order to solve this problem, Korean Patent Registration No. 10-1050579 (announced date 2011.07.19) discloses a section steel pile extractor buried in the ground as shown in FIG. 1 of the present specification.

More specifically, in the conventional section steel pile extractor, the pressure vise 11 coupled to the base plate 10 so as to be parallel to the ground is installed on both sides, and the pressure vise 11 is raised in a vertical direction with respect to the ground. It consists of a lifting hydraulic device 12.

Accordingly, in the conventional section steel pile extractor, in a state where both sides of the section steel pile buried in the ground are pressed by the pressure vise 11, the pressure vise 11 is raised by the lifting hydraulic device 12 to the ground. The buried section steel pile is pulled out.

However, in the case where the embedded foundation is a reinforced concrete pile, it is difficult to draw because the concrete part of which strength is degraded due to being buried in the ground for a relatively long time by the pressing vise 11 when drawing using such a conventional section steel pile drawing machine is easily damaged. Follows.

In addition, in the conventional shape steel pile extractor, when the cross section of the base to be drawn is circular, the contact area by the pressing vise 11 is relatively small, and it is difficult to draw.

In particular, reinforced concrete piles that have been buried for a long time are more difficult to draw because the soil adhered to the outer circumferential surface is completely integrated with the ground.

Accordingly, recently, a structural review has been conducted in consideration of the location of the reinforced concrete piles buried as a foundation while the existing reinforced concrete piles are left unattended, and a method of constructing the foundation by avoiding this has been used.

However, this construction method has a problem in that the cost of structural review to avoid interference between the new and existing files to be constructed is increased.

In addition, this construction method has a problem in that the cost of construction costs increases because a plurality of new piles are frequently constructed on both sides of the existing pile in order to avoid the existing pile.

Korean Registered Patent Publication No. 10-1050579 (announcement date 2011.07.19)

The present invention was conceived to solve the above-described problem, and reinforced concrete piles that are buried for a relatively long period of time and thus attached to the outer circumference of the pile are fixed or reinforced concrete piles buried in the ground regardless of the cross-sectional shape of the pile can be easily removed. It is to provide concrete pile removal method and device.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention that are not mentioned can be understood by the following description, and will be more clearly understood by the embodiments of the present invention.

In addition, it will be easily understood that the objects and advantages of the present invention can be realized by the means shown in the claims and combinations thereof.

In order to solve the above-described problems, the method of removing reinforced concrete piles according to the present invention includes at least two reinforcing bars inserted in the concrete section in the longitudinal direction of the concrete section and crushing the concrete section on the head side of the pile buried in the ground. The preparation step of exposing one end to the ground and the center of the hollow cylindrical casing having an inner diameter larger than the outer diameter of the pile and the center of the pile are coincident and the pile is embedded in the ground so that the pile is inserted into the inner peripheral surface side of the casing The casing inserting step and the drawing port fastening step of fastening the drawing port to the reinforcing bar, respectively, and the drawing port fastening step of moving the drawing port upward and at the same time rotating in one direction based on the center of the casing to draw the other end of the reinforcing bar to the ground. It includes a reinforcing bar removing step and a casing removing step of drawing the casing to the ground.

More specifically, a screw-shaped main blade is formed on the outer circumferential surface of the casing, and in the casing insertion step, the casing is rotated in one direction based on the center of the pile and buried in the ground.

In addition, in the casing removal step, the casing is rotated to one side with respect to the center of the pile and drawn out.

In addition, between the step of removing the rebar and the step of removing the casing, the step of removing the concrete part by rotating the screw auger to match the center of the casing and inserting it into the ground to remove the concrete part may be further included.

More preferably, water and air may be simultaneously sprayed between the pile and the casing in the casing insertion step.

In addition, after the casing removal step is completed, a compaction step of filling and compacting the soil in the pile and the ground in which the casing was buried may be further included.

On the other hand, the reinforced concrete pile removal device according to the present invention has a hollow cylindrical casing body that is detached from the crane by forming a space for inserting the pile on the inner circumferential side, and a screw-shaped main wing coupled to the outer circumferential surface of the casing body, and the It may include a casing that rotates and moves up and down by the crane, including a plurality of carbide tips formed on the lower end of the casing body.

More specifically, the casing body may include an auxiliary wing coupled to the inner peripheral surface.

In addition, the height of the auxiliary blade in the radial direction of the casing body is preferably formed to be smaller than the shortest distance from the inner peripheral surface of the casing body to the outer peripheral surface of the pile.

In addition, the inner circumferential surface of the casing body may include a plurality of hooks whose one end is coupled to a hook hinge so that the other end rotates upward from an imaginary straight line toward the center of the casing body around the hook hinge.

On the other hand, the reinforced concrete pile removal apparatus according to the present invention includes a clamping unit for gripping the outer peripheral surface of the end side of the reinforcing bar and a clamping unit housing in which a plurality of the clamping units are coupled, and a drawing port that rotates and moves up and down by a crane. You may.

The method and apparatus for removing reinforced concrete piles according to the present invention are new to be constructed by easily removing reinforced concrete piles buried in the ground regardless of whether the soil attached to the outer circumference of the pile is fixed after being buried for a relatively long time. It is possible to reduce the cost and construction cost of structural review to avoid interference between the pile and the existing pile.

In addition to the above-described effects, specific effects of the present invention will be described together while describing specific details for carrying out the present invention.

1 is a perspective view showing the shape of a conventional section steel pile extractor.
2 is a flowchart of a reinforced concrete pile removal method according to an embodiment of the present invention.
3 is a cross-sectional view showing a preparation step in a method for removing reinforced concrete piles according to an embodiment of the present invention.
4 is a cross-sectional view showing a casing insertion step in the reinforced concrete pile removal method according to an embodiment of the present invention.
5 is a cross-sectional view showing a step of fastening a drawing port in a method of removing a reinforced concrete pile according to an embodiment of the present invention.
6 is a cross-sectional view showing a step of removing reinforcement in the reinforced concrete pile removal method according to an embodiment of the present invention.
7 is a cross-sectional view showing a casing removal step in the reinforced concrete pile removal method according to an embodiment of the present invention.
8 is a flowchart of a reinforced concrete pile removal method according to an embodiment of the present invention.
9 is a cross-sectional view showing a concrete section removal step in the reinforced concrete pile removal method according to an embodiment of the present invention.
10A and 10B are front views each showing a casing of a reinforced concrete pile removal apparatus according to an embodiment of the present invention.
11A and 11B are bottom views each showing a casing of a reinforced concrete pile removal apparatus according to an embodiment of the present invention.
12 is a front view showing a drawing port of a reinforced concrete pile removal apparatus according to an embodiment of the present invention.
13 is a bottom view showing a clamping unit housing of a reinforced concrete pile removal apparatus according to an embodiment of the present invention.

The above-described objects, features, and advantages will be described later in detail with reference to the accompanying drawings, and accordingly, one of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, when it is determined that a detailed description of known technologies related to the present invention may unnecessarily obscure the subject matter of the present invention, a detailed description will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar elements.

Hereinafter, it means that an arbitrary component is disposed on the "top (or lower)" of the component or the "top (or lower)" of the component, the arbitrary component is arranged in contact with the top (or bottom) of the component. In addition, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

In addition, when a component is described as being "connected", "coupled" or "connected" to another component, the components may be directly connected or connected to each other, but other components are "interposed" between each component. It is to be understood that "or, each component may be "connected", "coupled" or "connected" through other components.

Singular expressions used in the present specification include plural expressions unless the context clearly indicates otherwise.

In the present application, terms such as "consist of" or "include" should not be construed as necessarily including all of the various elements or various steps described in the specification, and some of the elements or some steps It may not be included, or it should be interpreted that it may further include additional elements or steps.

Throughout the specification, when referred to as "A and/or B", it means A, B or A and B, unless otherwise specified, and when referred to as "C to D", it means that a special opposite description is Unless there is one, it means that it is C or more and D or less.

Hereinafter, a method and apparatus for removing reinforced concrete piles according to some embodiments of the present invention will be described.

2 is a flowchart of a reinforced concrete pile removal method according to an embodiment of the present invention.

In addition, FIGS. 3 to 7 are cross-sectional views each showing a preparation step, a casing insertion step, a drawing port fastening step, a rebar removing step, and a casing removing step in the reinforced concrete pile removal method according to an embodiment of the present invention.

2 to 7, the reinforced concrete file removal method according to the present invention includes a preparation step (S100) and a casing insertion step (S200), a drawing port fastening step (S300), a rebar removing step (S400), and a casing removal step ( S500).

The preparation step (S100) is a step of exposing one end of the reinforcing bar (S) to the ground by crushing the head-side concrete portion (C) of the pile (P) buried in the ground as shown in FIG. 3.

More preferably, the pile (P) includes at least two reinforcing bars (S) in the concrete part (C), including a PHC pile (Prestressed High-strength Concrete pile), a Cast-in-place Concrete pile, etc. ) Is a pile inserted in the length direction of the concrete part (C).

For example, in the preparation step (S100), the concrete part of the part protruding to the ground by using compressed air or by using a doropball-type concrete crusher using the impact force by suspending the steel ball on a small rock drill or swinging crane directly connected to the engine. (C) may be crushed to expose one end of the reinforcing bar (S) to the ground.

In addition, the casing insertion step (S200) coincides with the center of the hollow cylindrical casing 100 having an inner diameter larger than the outer diameter of the pile (P) as shown in FIG. This is a step of burying the casing 100 in the ground so that the pile P is inserted into the inner peripheral surface side of the casing 100.

More preferably, the casing 100 further includes a screw-shaped main wing 120 formed on the outer circumferential surface, and rotates to one side based on the center of the pile P in the casing insertion step (S200). Can be buried in.

In addition, the casing 100 is detachable from the crane (M) and can be moved horizontally or vertically by power supplied from the crane (M), and can be rotated at the same time.

In addition, it is preferable that the lower end of the casing 100 buried in the ground in the casing insertion step S200 is the same as or deeper than the lower end of the pile P.

In addition, in the casing insertion step (S200), water and air may be simultaneously injected between the pile (P) and the casing 100 while inserting the casing 100 into the ground.

Accordingly, the adhesion between the pile P and the casing 100 is reduced by water and air, so that the casing 100 can be more easily inserted.

On the other hand, the fastening step (S300) of the drawing port is a step of fastening the drawing port 200 to each of the reinforcing bars (S) as shown in FIG. 5.

The drawer 200 may include a plurality of clamping units 210 gripping one end of the reinforcing bar (S).

Accordingly, in the pull-out fastening step (S300), each end of the reinforcing bar (S) exposed to the ground through the preparation step (S100) may be gripped by the clamping unit 210.

On the other hand, in the rebar removing step (S400), the reinforcing bar (S) is rotated in one direction based on the center of the casing 100 while moving the drawing port 200 upward as shown in FIG. This is the step of drawing the other end of the to the ground.

At this time, the concrete part (C) is crushed as the reinforcing bar (S) is twisted.

In particular, in the case of a cast-in-place concrete pile in which the reinforcing bar (S) is inserted in the longitudinal direction and the radial direction of the pile (P) or a PHC pile, the concrete part (C) by the rebar removing step (S400) is further Can be finely shredded.

In addition, when the pile (P) is kept buried in the ground for a long time, the strength of the concrete part (C) is significantly weakened by moisture or pressure, so the concrete part (C) by the rebar removing step (S400) Can be broken more easily.

Accordingly, in the reinforced concrete pile removal method according to the present invention, the reinforcement (S) is drawn to the ground by the reinforcement removal step (S400) as described above, and the concrete part (C) is crushed in the ground. Is completed.

In addition, in the step of removing the reinforcing bar (S400), the other end of the reinforcing bar (S) may be drawn to the ground by moving the drawing port 200 upward without rotating it.

At this time, the rebar removing step (S400) may be performed by the crane (M).

Thereafter, as shown in FIG. 7, a casing removal step S500 of drawing the casing 100 to the ground may be performed.

More specifically, when the main wing 120 is formed on the outer circumferential surface of the casing 100 in the casing removing step (S500), the casing 100 is the casing inserting step based on the center of the pile (P) ( In S200), the casing 100 may be inserted and drawn while rotating in a direction opposite to the rotation direction.

In addition, the casing removal step (S500) may be performed by the crane (M).

Accordingly, the reinforced concrete pile removal method according to the present invention can easily remove the reinforced concrete pile that is buried for a relatively long period of time so that the soil attached to the outer circumference of the pile is fixed or that is buried in the ground regardless of the cross-sectional shape of the pile.

On the other hand, the reinforced concrete file removal method according to the present invention may omit the casing insertion step (S200) and the casing removal step (S500).

That is, in the reinforced concrete file removal method according to the present invention, in the reinforcement removal step (S400) by performing the preparatory step (S100) and the drawing port fastening step (S300), and then performing the rebar removing step (S400). A new pile P may be buried without the need to remove the crushed concrete part C.

On the other hand, Figure 8 is a flow chart of the reinforced concrete pile removal method according to an embodiment of the present invention.

In addition, Figure 9 is a cross-sectional view showing a concrete section removal step in the reinforced concrete pile removal method according to an embodiment of the present invention.

8 and 9, the reinforced concrete pile removal method according to the present invention includes a screw auger 300 to match the center of the casing 100 between the reinforcement removing step (S400) and the casing removing step (S500). It may further include a concrete portion removing step (S410) of removing the concrete portion (C) by rotating it and inserting it into the ground.

The screw auger 300 may be inserted into the ground in the shape of an awl having a screw-shaped blade as shown in FIG. 9 and discharge the crushed concrete part (C) to the ground in the rebar removing step (S400). have.

In this case, the concrete part removing step (S410) is performed by the crane (M), and may be performed after the casing removing step (S500).

In addition, the reinforced concrete pile removal method according to the present invention further includes a compaction step (S600) of filling and compacting the soil in the ground where the pile (P) and the casing 100 were buried when the casing removal step (S500) is completed. You may.

Accordingly, the reinforced concrete pile removal method according to the present invention can reduce the cost and construction cost of structural review to avoid interference between the new pile to be constructed and the existing pile.

Meanwhile, FIGS. 10 and 11 are a front view and a bottom view showing a casing of a reinforced concrete pile removal apparatus according to an embodiment of the present invention, respectively.

Referring to this, the casing 100 of the reinforced concrete pile removal device according to the present invention has a hollow cylindrical casing body 110 formed on the inner circumferential side for inserting the pile P to be detached from the crane M And a screw-shaped main wing 120 coupled to the outer circumferential surface of the casing body 110 and a plurality of carbide tips 130 formed at the lower end of the casing body 110 by the crane (M) Can rotate and move up and down.

In the casing insertion step (S200) by the main blade 120 and the carbide tip 130, the casing 100 may be more easily inserted into the ground.

In addition, as shown in Figure 10a and Figure 10b, the casing 100 may include an auxiliary wing 140 coupled to the inner peripheral surface.

At this time, the height of the auxiliary blade 140 in the radial direction of the casing body 110 is formed smaller than the shortest distance from the inner peripheral surface of the casing body 110 to the outer peripheral surface of the pile (P).

That is, when the casing 100 is inserted into the ground in the casing insertion step (S200), the end of the auxiliary wing 140 is preferably formed to be spaced apart from the pile (P).

Accordingly, the casing 100 of the reinforced concrete pile removal device according to the present invention can further reduce the adhesion of the soil and sand to the space between the casing 100 and the pile P by the auxiliary wing 140. .

In addition, the casing 100 of the reinforced concrete pile removal device according to the present invention is the casing body 110 as shown in FIGS. 4 and 10 b and 11 b instead of the auxiliary blade 140 On the inner circumferential surface, one end is coupled to the hook hinge 151 so that the other end rotates upward from a virtual straight line toward the center of the casing body 110 around the hook hinge 151. It can also be included.

In addition, a hook stopper 152 is formed on the inner circumferential surface of the casing body 110 to limit the rotation angle of the hook 150.

More specifically, the hook 150 is rotated upwardly without being rotated so that the end of the side facing the pile P is downward, but the hook hinge 151 is not vertically upward by the hook stopper 152 It can be rotated around.

That is, the casing 100 is inserted into the ground with the end of the hook 150 rotated upward in the casing insertion step (S200), and the end of the hook 150 in the casing removal step (S500) May be drawn in a state toward the radial direction of the pile P.

More preferably, three or more hooks 150 are radially spaced apart from the inner circumferential surface of the casing 100 so as to be horizontally formed, and a plurality of hooks 150 may be vertically spaced apart from each other.

In addition, the length of the hook 150 may be formed larger than the distance from the inner peripheral surface of the casing 100 to the outer peripheral surface of the pile (P).

Accordingly, the concrete portion (C) crushed in the reinforcing bar removing step (S400) can be caught by the hook 150 and taken out to the ground together with the casing 100 in the casing removing step (S500).

That is, since the reinforced concrete pile removal device according to the present invention can take out the crushed concrete part (C) to the ground in the reinforcement removing step (S400) by the hook 150, the concrete part removing step (S410) is omitted. You may.

Meanwhile, FIGS. 12 and 13 are a front view and a bottom view of a clamping unit housing, respectively, showing a drawing port of a reinforced concrete pile removal apparatus according to an embodiment of the present invention.

5, 12, and 13, the drawing port 200 of the reinforced concrete pile removal device according to the present invention is a clamping unit 210 and the clamping for gripping the outer peripheral surface of the end side of the reinforcing bar (S) inside. The unit 210 includes a clamping unit housing 220 to which a plurality of units are coupled, and can be rotated and moved up and down by the crane M.

As an example, the clamping unit 210 includes a clamping part 211 formed to surround the outer circumferential surface by inserting the reinforcing bar S and a clamping part housing 212 formed to surround the outer circumferential surface of the clamping part 211 Can include.

At this time, the clamping part 211 is formed in a conical shape whose cross-sectional area increases as the outer circumferential surface goes upward, and is divided into at least two or more so that the interval can be adjusted in the radial direction of the hole into which the reinforcing bar (S) is inserted. It is desirable.

In addition, the clamping part housing 212 may have an inner circumferential surface corresponding to the outer circumferential surface of the clamping part 211 so as to be inclined.

Accordingly, when the clamping part housing 212 moves upward, the gap between the clamping parts 211 is narrowed and the outer peripheral surface of the reinforcing bar S may be gripped.

In addition, the clamping unit housing 220 is the clamping unit 210 on the bottom surface so that the clamping unit 210 can be fastened according to the position and number of reinforcing bars (S) to be pulled out as shown in FIG. 13. ) May include a plurality of clamping unit coupling portions 221 formed at regular intervals to be coupled.

As an example, in the case where there are three reinforcing bars (S) exposed to the ground in the preparation step (S100), the clamping unit housing (the clamping unit 210) is positioned on a virtual vertical line passing through the center of each reinforcing bar (S) ( Three clamping units 210 may be coupled to 220).

Accordingly, when the rebar removing step (S400) is performed, the reinforced concrete pile removal device according to the present invention has the reinforced concrete part (C) crushed due to the twisting of the reinforcing bars (S). Can be done.

As described above with reference to the drawings illustrated for the present invention, the present invention is not limited by the embodiments and drawings disclosed in the present specification, and various by a person skilled in the art within the scope of the technical idea It is obvious that transformation can be made. In addition, even if not explicitly described and described the effects of the configuration of the present invention while describing the embodiments of the present invention, it is natural that the predictable effects of the configuration should also be recognized.

P. file
C. Concrete section
S. Rebar
M. Crane
100. Casing
110. Casing body
120. Main Wing
130. Carbide Tips
140. Auxiliary Wing
150. Hook
151. Hook Hinge
152. Hook Stopper
200. Drawer
210. Clamping unit
211. Clamping part
212. Clamping part housing
220. Clamping unit housing
221. Clamping unit coupling
300. Auger
S100. Preparation stage
S200. Casing insertion step
S300. Steps to conclude with drawer
S400. Steps to remove rebar
S410. Concrete part removal step
S500. Casing removal step
S600. Compaction step

Claims (12)

A preparation step in which at least two reinforcing bars are inserted in the concrete part in the longitudinal direction of the concrete part to crush the concrete part at the head of the pile buried in the ground to expose one end of the reinforcing bar to the ground;
A casing insertion step of burying the casing in the ground so that the pile is inserted into the inner peripheral surface of the casing by matching the center of the pile with the center of the hollow cylindrical casing having an inner diameter larger than the outer diameter of the pile;
A drawing port fastening step of fastening a drawing port to each of the exposed reinforcing bars;
Rebar removing step of drawing the other end of the reinforcing bar to the ground by moving the drawer upward; And
Reinforced concrete pile removal method comprising a; casing removal step of drawing the casing to the ground.
The method of claim 1,
Reinforced concrete pile removal method of moving the drawing port upward in the rebar removing step and rotating in one direction based on the center of the casing.
The method of claim 1,
A reinforced concrete pile removal method in which a screw-shaped main blade is formed on the outer circumferential surface of the casing to rotate the casing in one direction based on the center of the pile in the casing insertion step and buried in the ground.
The method of claim 3,
A reinforced concrete pile removal method in which the casing is rotated to one side with respect to the center of the pile in the casing removing step and pulled out.
The method of claim 1,
A reinforced concrete pile removal method further comprising a concrete section removing step of removing the concrete section by rotating the screw auger to match the center of the casing and inserting it into the ground between the rebar removing step and the casing removing step.
The method of claim 1 or 4,
After completion of the casing removal step, a compaction step of filling and compacting the pile and the soil in the ground where the casing was buried; a reinforced concrete pile removal method further comprising.
In a pile buried in the ground by inserting at least two reinforcing bars in the concrete section in the longitudinal direction of the concrete section, the concrete section at the head side of the pile is crushed to expose one end of the two or more reinforcing bars to the ground. A clamping unit gripping the outer peripheral surface; And
A reinforced concrete pile removal device comprising: a pull-out port comprising: a clamping unit housing in which a plurality of clamping units are coupled.
The method of claim 7,
A hollow cylindrical casing body in which a space for inserting a file is formed on the inner circumferential side and detached from the crane (M);
A screw-shaped main blade coupled to the outer peripheral surface of the casing body;
Reinforced concrete pile removal device further comprising a; a plurality of carbide tips formed on the lower side of the casing body; including a casing that rotates and moves up and down by the crane.
The method of claim 8,
The casing body includes an auxiliary wing coupled to the inner peripheral surface,
A reinforced concrete pile removing device in which the height of the auxiliary blade in the radial direction of the casing body is formed smaller than the shortest distance from the inner peripheral surface of the casing body to the outer peripheral surface of the pile.
The method of claim 8,
Reinforced concrete pile removal device comprising a plurality of hooks on the inner circumferential surface of the casing body, one end is coupled to a hook hinge and the other end rotates upward from a virtual straight line toward the center of the casing body around the hook hinge.
A preparatory step in which at least two or more reinforcing bars are inserted into the concrete part in the longitudinal direction of the concrete part to crush the concrete part at the head side of the pile buried in the ground to expose one end of the reinforcing bar to the ground;
A drawing port fastening step of fastening a drawing port to each of the exposed reinforcing bars;
Reinforced concrete pile removal method comprising; reinforcing bar removal step of drawing the other end of the reinforcing bar to the ground by moving the drawing port upward.
The method of claim 11,
A reinforced concrete pile removal method in which the drawing port is moved upward in the rebar removing step and rotated in one direction based on the center of the pile.

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