KR20200146031A - Concrete pile having reinforcing structure for pile head - Google Patents

Abstract

The present invention relates to a concrete pile having a reinforcing structure for a pile head, which is able to prevent the pile head from being damaged or injured when driving the pile. According to the present invention, the concrete pile having a reinforcing structure for a pile head comprises: a pile main frame which includes a concrete body manufactured with precast concrete and having a lower portion installed on the ground to support the load of an upper structure, and a reinforced rebar in the concrete body; the reinforcing structure for a pile head, which includes a plurality of reinforcing blocks piled up in a plurality of stages on an upper portion of the pile main frame to prevent the pile head of the pile main frame from being damaged when the pile is being driven; and an engagement unit which is respectively engaged with the pile main frame and the reinforcing structure for a pile head to allow the reinforcing structure for a pile head to be installed on an upper portion of the pile main frame. The reinforcing structure for a pile head includes reinforcing blocks having different strengths from each other. As such, according to the present invention, the concrete pile having the reinforcing structure for a pile head has a simple structure, is easily installed to improve constructability and economic efficiency, has sufficient rigidity to effectively maintain the structural stability of the concrete pile, needs to replace only the damaged parts without needing to replace the whole configuration when the reinforcing structure for the pile head is damaged by driving the pile and thus, improves constructability and economic efficiency.

Description

Concrete pile having reinforcing structure for pile head}

The present invention relates to a concrete pile having a head reinforcement, and more particularly, when a concrete pile is inserted into the ground through driving, the head of the concrete pile is prevented from being damaged or damaged, so that the structural stability and economical efficiency of the concrete pile And it relates to a concrete pile having a head reinforcement body capable of improving workability.

In general, in the process of constructing structures or structures such as construction or civil works, in order to secure stability and prevent ground subsidence, a number of piles that safely support the lower part are inserted into the basement bedrock or buried to lay the foundation. Construct a structure or building on it.

In particular, in areas where the stratum is unstable or the ground is weak, the piles must be placed or buried in order to solidly accumulate civil works and buildings.

In the early days of construction or civil works, many methods of distributing the load by forming a support by using wooden stakes that are easily available in nature or by placing a boulder on the support have been widely used.In the early 1990s, the centrifugal manufacturing method was used. As the used hollow concrete piles were developed, many types of hollow concrete piles applicable to various conditions in the field, such as SC (chemical prestress), PC (pretentioned spun concrete piles), and PHC (pretentioned spun high strength concrete) piles, are being used. .

As the ground insertion method for concrete piles developed in this way, there is a driving method, which is largely typed using a hammer, and a method of inserting a concrete pile into the hole in the state where the pile insertion hole is drilled in the destination board with a separate drilling device. The method of placing concrete and using a hammer to type concrete after digging until a bedrock layer comes out takes considerable construction time and cost. In particular, in the case of using a hammer, the head of the concrete pile is damaged or damaged. Genie is mainly using PHC files.

As an example of a technology for the head reinforcement technology of such a concrete pile, Korean Patent Laid-Open No. 10-2007-0050516 discloses a structure for reinforcing the head of various hollow concrete piles such as PHC piles embedded in the ground to reinforce soft ground, and Regarding the construction method, a head cover having a plurality of through-holes into which the steel wires of the PHC pile are respectively inserted, a fixture spirally coupled to the PHC pile steel wire, and a plurality of through-holes inserted into the perforated cylindrical holes of the PHC pile The formed disk-shaped closure plate, the support for supporting the disk-shaped closure plate by spirally coupling the spiral portion and the nut formed at the bottom, and the cylindrical hole of the PHC pile are inserted, and a plurality of nuts are welded to the outer periphery of the reinforcing bar. A structure for reinforcing the head of a hollow concrete pile having a reinforcing bar fixing ring that is helically coupled to the helical part and a construction method thereof have been disclosed.

However, the above-described conventional reinforcing structure of the head of the concrete pile is difficult to install in the concrete pile due to its complicated structure, and there is a problem that breakage or damage occurs because it does not have sufficient rigidity for driving, and it is also constructed upon failure. There was a problem of having to replace the whole.

Republic of Korea Patent Publication No. 10-2007-0050516

An object of the present invention is to provide a concrete pile with a head reinforcement that can effectively maintain the structural stability of a concrete pile because the structure is simple and easy to install, so that workability and economical efficiency can be improved. do.

In addition, the present invention aims to provide a concrete pile with a head reinforcement that can improve workability and economy, since only the damaged part needs to be replaced without the need to replace the entire configuration when the head reinforcement body is damaged by driving. To do.

The present invention is a head reinforcement of a concrete pile installed on the ground by driving, a concrete body that is precast concrete and the lower portion is installed on the ground to support the load of the upper structure, and the reinforcement reinforced within the concrete body A file body comprising a; A head reinforcement body installed on the top of the pile body and comprising a plurality of reinforcing blocks stacked in multiple stages to prevent head destruction of the pile body during driving; It provides a concrete pile with a head reinforcement body, characterized in that it comprises a coupling unit that is coupled to the pile body and the head reinforcement body, respectively, to allow the head reinforcement body to be installed on the upper portion of the pile body.

Here, the coupling unit is a reinforcing bar protruding from the upper end of the concrete body and extending; The reinforcing blocks may be stacked in multiple stages by passing through the extended reinforcing bar.

In addition, the coupling unit, the lower end is detachably coupled to the upper surface of the pile body, the upper end is exposed to the upper portion of the reinforcing block through the reinforcing blocks, a fastening rod having a thread on the outer circumferential surface, and the uppermost reinforcing block It may be configured to include a fixing nut screwed to the upper end of the fastening rod exposed to the top.

In addition, the coupling unit is each penetrated through a plurality of through-holes formed in the reinforcing block, a coupling protrusion is formed at the lower end, and a coupling groove into which the coupling protrusion is inserted is formed at the upper end, so that the reinforcing blocks are combined It may be configured to include a coupler to be laminated to each other by the protrusion and the coupling groove.

Here, the coupling unit may further include a fixing part embedded and fixed to the upper surface of the pile body so that the upper surface is exposed, and the coupling protrusion is inserted and fixed to the upper surface.

Further, the head reinforcement may be formed on an upper surface and a lower surface of the reinforcing block, respectively, so that when the reinforcing blocks are stacked, an assembly groove and an assembly protrusion may be formed, respectively.

The stacking height of the head reinforcement is formed to be 1.5 times the diameter of the reinforcement block so that it is equal to or greater than the depth (L) at which the stress is equalized against the centralized load according to the empirical formula for Saint-Venant's Principle. It is desirable.

In addition, the stacking height of the head reinforcement is at least twice the diameter of the reinforcing block so that the depth (L) at which the stress is equalized against the external concentrated load according to the empirical formula for Saint-Venant's Principle. It is preferably formed.

On the other hand, the head reinforcement body may be configured to include reinforcing blocks having different strengths.

Here, it is preferable that the two reinforcing blocks having different strengths are disposed above the reinforcing block having a high strength and a reinforcing block having a low strength.

In addition, it is preferable that the strength of the reinforcing block disposed on the upper surface of the pile body is configured to have a strength lower than that of the concrete body.

The concrete pile with the head reinforcement according to the present invention provides the following effects.

First, the structure is simple and easy to install, so it is possible to improve workability and economics, and because it has sufficient rigidity, the structural stability of the concrete pile can be effectively maintained.

Second, when the head reinforcement is damaged due to driving, only the damaged part needs to be replaced without the need to replace the entire composition, so it is possible to improve workability and economic efficiency.

1 is a perspective view showing the configuration of a concrete pile having a head reinforcement according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view showing the configuration of a concrete pile with a head reinforcement body of FIG. 1.
Figure 3 is an exploded perspective view showing another embodiment of a coupling unit in the concrete pile with the head reinforcement of Figure 2;
Figure 4 is an exploded perspective view showing another embodiment of a coupling unit in the concrete pile with the head reinforcement of Figure 2;
5 is an exploded perspective view showing another embodiment in which an assembly groove and an assembly protrusion are formed in a reinforcing block in the concrete pile having the head reinforcement of FIG. 2.
6 is a front cross-sectional view showing an assembled state by forming an assembly groove and an assembly protrusion in a reinforcing block in the concrete pile having the head reinforcement of FIG. 5.
FIG. 7 is a diagram illustrating a stacking arrangement according to the strength of the reinforcing blocks in the concrete pile with the head reinforcement of FIG. 1.
FIG. 8 is a view for showing the setting of the stacking height of the reinforcing block in the concrete pile with the head reinforcement of FIG. 1.
9 is a perspective view showing another embodiment of a reinforcing block in the concrete pile with the head reinforcement of FIG.

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

1 and 2, the concrete pile with the head reinforcement according to the embodiment of the present invention is installed on the head of the concrete pile installed on the ground to reinforce the head of the concrete pile when driving, thereby damaging the concrete pile. It aims to prevent.

Looking at the concrete pile with the head reinforcement body, the concrete pile with the head reinforcement body is configured to include a pile body 100, a head reinforcement body 200, and a coupling unit 300.

First, the pile body 100 is composed of a pile structure with a columnar lower part erected on the ground, as shown, a concrete body 110 made of a concrete structure, and a reinforcement reinforced within the concrete body 110 ( 120).

The concrete body 110 is precast concrete, and the lower part is installed on the ground to support the load of the upper structure.

The concrete body 110 is configured in the shape of a columnar pile, and the lower end may be formed to gradually decrease the flat area to facilitate installation on the ground during driving in the field.

The reinforcing bar 120 is laid in the concrete body 110 along the longitudinal direction to improve the overall rigidity of the pile body 100.

Here, the pile body 100 may be formed of a known concrete reinforcement structure including a concrete body 110 and a reinforcing bar 120 as described above, and at this time, the size of the concrete body 110 and the reinforcing bar 120 The size and number of) can be variously changed according to the design, and although not shown, band reinforcement or spiral reinforcement may be arranged.

The head reinforcement body 200 is installed on the upper part of the pile body 100 and is configured to directly receive a striking force instead of the pile body 100 when driving, through which the head of the pile body 100 It is configured to prevent destruction.

The head reinforcement body 200 is a cylindrical block corresponding to the shape of the pile body 100, and is configured to be easily coupled to the upper part of the pile body 100, and is made of concrete or reinforced concrete having sufficient rigidity during driving. Is composed.

Further, the head reinforcement body 200 may be configured to include a plurality of reinforcement blocks 210 that are stacked in multiple stages on the upper part of the pile body 100.

Each of the reinforcing blocks 210 is formed to correspond to the shape of the pile body 100, and the upper and lower surfaces in contact with each other are formed flat to enable multi-level stacking.

Meanwhile, the reinforcing blocks 210 are configured to be manufactured in advance by the manufacturer by standardizing the shape and strength, and the reinforcing blocks 210 can be selectively stacked and used in response to the driving force at the site. Do.

Therefore, when the driving force is determined in the field, the operator can install by combining the standardized reinforcing blocks 210 in response to the driving force, and accordingly, there is no need to stack the reinforcing blocks 210 more than necessary depending on the site situation. It can create economic effects by reducing material waste.

Further, since the head reinforcement body 200 is composed of a plurality of reinforcing blocks 210, not a single configuration as described above, when the reinforcing block 210 is damaged by driving, it is damaged without the need to replace the whole. Since only the reinforcing blocks 210 need to be replaced, an economical effect can be obtained.

The coupling unit 300 is coupled to the pile body 100 and the head reinforcement body 200, respectively, and serves to allow the head reinforcement body 200 to be installed on the upper portion of the pile body 100.

Hereinafter, various embodiments of the coupling unit 300 will be described.

(Example 1)

In the case of the first embodiment, the coupling unit 300 represents an embodiment in which the reinforcing blocks 210 are combined using the reinforcing bar 120 of the pile body 100.

Referring to Figs. 1 and 2, first, the pile body 100 is a reinforced concrete structure as described above, and the reinforcing bar 120 is arranged in the concrete body 110 along the longitudinal direction. have.

Accordingly, the coupling unit 300 according to the first embodiment may be composed of a reinforcing bar 120 protruding from the upper end of the concrete body 110 and extending.

In this case, each of the reinforcing blocks 210 is formed with a through hole 211 to penetrate through the reinforcing bar 120, and the reinforcing bar 120 extending through the through hole 211 is inserted through and stacked in multiple stages. .

On the other hand, the reinforcing bar 120 is formed to extend to a set height with a margin, so that the reinforcing blocks 210 are formed at a sufficient height so that all of the reinforcing blocks 210 can penetrate, and the remaining length after the reinforcing blocks 210 are all stacked It can be cut in the field to match its height.

Alternatively, the reinforcing bar 120 is cut leaving only a predetermined length before stacking the reinforcing block 210 at the last top, so that the reinforcing bar 120 can be prevented from protruding to the outside after stacking the reinforcing block 210 at the top. have.

(Example 2)

The coupling unit (300a) according to the second embodiment, compared to the coupling unit (300) of the first embodiment described above, coupling the fastening rod (320) to the pile body (100) and using the reinforcing block (210). ) Shows an embodiment in which they are combined.

Referring to FIG. 3, the coupling unit 300a may be configured to include a fastening rod 320 and a fixing nut 310.

The fastening rod 320 is a rod shape having a predetermined length, the lower end is coupled to the upper surface of the pile body 100, the upper is erected in a vertical direction to be exposed from the pile body 100.

The fastening rod 320, through which the reinforcing blocks 210 are penetrated, the reinforcing blocks 210 are stacked, the upper end is exposed from the upper surface of the uppermost reinforcement block 210, and a thread 321 is formed on the outer peripheral surface of the upper end. The fixing nut 310 is screwed.

On the other hand, the fastening rod 320, the lower end portion is detachably inserted into the fitting groove formed in the file body 100, it may be fitted and coupled with the file body 100.

At this time, the fastening rod 320 is inserted detachably into the fitting groove 111 of the pile body 100, or by forming a screw thread on the inner circumferential surface of the fitting groove 111 and the fastening rod 320 to increase the fastening force. Various coupling methods, such as fastening, are applicable.

According to the above, the coupling unit 300a may select a fastening rod 320 having an appropriate height corresponding to the height of the reinforcing blocks 210 stacked in the field, and fit it to the pile body 100. , It is possible to respond to this by varying the number of reinforcing blocks 210 stacked on site.

The fixing nut 310 is coupled to the fastening rod 320 so that the reinforcing blocks 210 are stably stacked and installed in multiple stages on the upper part of the pile body 100, and prevents the reinforcing blocks 210 from being separated. Plays a role.

In detail, the fixing nut 310 is fastened to the upper end of the fastening bar 320 exposed from the top of the uppermost reinforcing block 210 among the reinforcing blocks 210 stacked through the fastening bar 320.

Here, the fixing nut 310 is screwed to the fastening rod 320 so that it is detachable from the fastening rod 320 so that the reinforcing block 210 can be easily replaced when the reinforcing block 210 is damaged. do.

Meanwhile, the reinforcing block 210 may have an insertion groove 214 formed so that the fixing nut 310 does not protrude from the upper surface when the fixing nut 310 is fastened. This is to prevent the concentration of driving force to the fixing nut 310 during driving and to allow the driving force to be effectively transmitted to the pile body 100.

The insertion groove 214 is formed to a depth corresponding to the height of the fixing nut 310 so that the fixing nut 310 does not protrude from the upper surface of the reinforcing block 210, and is fixed using a tool. It is preferable that the nut 310 is formed larger than the diameter of the fixing nut 310 to facilitate fastening of the nut 310.

(Third Example)

The coupling unit 300b according to the third embodiment represents an embodiment in which a coupler 330 is coupled to the reinforcing block 210 so that a plurality of reinforcing blocks 210 are coupled to each other through the coupler 330. have.

Referring to FIG. 4, the coupling unit 300b may include a coupler 330 and a fixing part 340.

The coupler 330 is coupled through each of the plurality of through holes 211 formed in the reinforcing block 210.

In detail, the coupler 330 is formed with a coupling protrusion 331 at the lower end, and a coupling groove 332 in which the coupling protrusion 331 is fitted at the upper end, so that the reinforcing blocks 210 are stacked in multiple stages. When the reinforcing blocks 210 are coupled to each other by the coupling protrusion 331 and the coupling groove 332.

Here, the coupling groove 332 and the coupling protrusion 331 may be formed as a cylindrical pin and groove as shown, but this may be formed in a polygonal shape as a flat cross-sectional shape as an example. Of course.

The coupler 330 is preferably inserted through the reinforcing blocks 210 formed of a concrete material, and formed of a metal material so as to improve the durability of the reinforcing block 210 when driving.

On the other hand, the lowermost layer reinforcement block 210 can be coupled to the pile body 100 in various ways in a state in which the coupler 330 is coupled.

As an example of this, the coupler 330 is coupled to the pile body 100 as it is without a separate configuration, so that the lowermost reinforcing block 210 and the pile body 100 may be coupled.

To this end, the pile body 100 may form a coupling groove 332 having a predetermined depth so that the coupling protrusion 331 can be inserted and fixed on an upper surface.

Thus, the pile body 100 and the lowermost reinforcing block 210, the coupling protrusion 331 of the coupler 330 coupled to the lowermost reinforcing block 210, and a coupling groove 332 formed in the pile body 100 As they are fitted together, they are fixed to each other.

Next, unlike the above, a separate configuration may be provided so that the pile body 100 and the coupler 330 are coupled.

Looking at this, for this purpose, the coupling unit 300b may be configured to further include a fixing part 340.

The fixing part 340 is fixed to the pile body 100 and is configured to be coupled with the coupling protrusion 331, and thus, an effect of improving the fastening force between the pile body 100 and the coupler 330 may be provided.

In detail, the fixing part 340 has a coupling groove 341 in which the coupling protrusion 331 of the coupler 330 coupled to the lowermost layer reinforcing block 210 is inserted and fixed on the upper surface as shown, and the upper surface It is fixed to the upper surface of the file body 100 so that this is exposed.

On the other hand, the head reinforcement body 200 prevents slipping between the reinforcement blocks 210 because the reinforcement blocks 210 are stacked in multiple stages as shown in FIGS. 5 and 6, and is positioned at a set position. Can be configured.

Specifically, each of the reinforcing blocks 210 may have an assembly groove 212 and an assembly protrusion 213 formed on an upper surface and a lower surface thereof so as to be coupled to each other when stacked.

Here, the assembly groove 212 and the assembly protrusion 213 may be formed in a position and number set corresponding to the shape size of the reinforcing block 210 so as not to weaken the durability of the reinforcing block 210 during driving.

In the drawing, the assembly groove 212 and the assembly protrusion 213 are each formed in a columnar shape, and it shows a case where four are formed on each of the upper and lower surfaces, but this is an embodiment and various shapes other than the columnar shape are applicable. Of course, the number can be set in various ways.

Further, the assembly groove 212 is formed on the upper surface of the reinforcing block 210 as shown, and the assembly protrusion 213 is preferably formed on the lower surface of the reinforcing block 210.

This is because if the assembly protrusion 213 is formed to protrude from the upper surface of the reinforcing block 210, the assembly protrusion 213 formed on the upper surface of the uppermost reinforcing block 210 is damaged during driving. In addition, in this case, the pile body 100 is because there is a difficulty in construction that the protrusion must be separately formed so as to be assembled in the assembly groove 212 formed on the lower surface of the lowermost reinforcing block 210.

On the other hand, referring to FIG. 7, in the present invention, in forming the head reinforcement body 200 by stacking multi-stage reinforcement blocks 210, reinforcement blocks 210a, 210b, 210c. 210d, 210e of different strengths are provided. As it is stacked by a preset method, it can be installed in consideration of the economics of the reinforcing blocks 210 according to the generation of stress due to the driving force, and the destruction of the pile body 100 can be induced to the destruction of the reinforcing blocks 210. Hereinafter, the arrangement method of these reinforcing blocks 210 will be described in detail.

First, the head reinforcement body 200 includes reinforcing blocks 210a, 210b, 210c. 210d, and 210e having different strengths, and at this time, the reinforcing blocks 210a, 210b, 210c. 210d, and 210e They are standardized and configured to have a set strength.

In this state, the two reinforcing blocks having different strengths are arranged so that the reinforcing block having high strength is disposed on the upper portion of the reinforcing block having low strength, and as a whole, the reinforcing blocks 210a having lower strength toward the pile body 100 210b, 210c. 210d, 210e) are preferably arranged.

This is because the uppermost reinforcement block 210a directly receives the driving force from the reinforcement blocks 210a, 210b, 210c. 210d, 210e stacked in multiple stages, the maximum stress due to the concentrated load in the uppermost reinforcement block 210a. This is because the largest and lower reinforcing blocks 210b, 210c. 210d, 210e distribute the load, thereby reducing the maximum stress.

For example, when multi-layered reinforcement blocks 210a, 210b, 210c, 210d, and 210e are respectively referred to as blocks A, B, C, D, and E as shown, the design strength of each of these blocks is Assuming that a kgf/cm ² , b kgf/cm ² , c kgf/cm ² , d kgf/cm ² , e kgf/cm ² and the strength of the pile body 100 is assumed to be Ikgf/cm ² , these The strength of the reinforcing blocks 210a, 210b, 210c. 210d, 210e is arranged in the order of a>b>c>d> e, so that the strength of the reinforcement blocks 210a, 210b, 210c. It is preferable that the strength of the highest reinforcing block 210a that is directly transmitted is maximized.

Meanwhile, at this time, two or more of the reinforcing blocks 210a, 210b, 210c, 210d, and 210e may have the same strength, and even in this case, as described above, the reinforcing blocks having high strength have low strength. It may be disposed on top of the reinforcing block having.

According to the above, the operator can select and apply the reinforcing blocks 210a, 210b, 210c. 210d, 210e of suitable strength to correspond to the driving force of the field, and the reinforcing blocks 210a, 210b, 210c. 210d, It is possible to economically arrange and use the reinforcing blocks 210a, 210b, 210c. 210d, 210e without the need to increase the strength of 210e) more than necessary.

That is, the unit cost of the reinforcing blocks 210a, 210b, 210c. 210d, 210e is determined according to the strength of the concrete, and the reinforcing blocks 210a, 210b, 210c. 210d, 210e of appropriate strength corresponding to the driving force of the site are determined. By using them, you can provide economical effects by reducing the wasted cost.

On the other hand, among the reinforcing blocks 210, the strength of the reinforcing block 210e disposed on the upper surface of the pile body 100 is the pile body (I; 100) so as to prevent head damage to the pile body 100. It is preferable to be configured to have a strength to be lower than the strength of the concrete body 110.

That is, when an impact load that may cause destruction is applied to the top of the pile body 100, the reinforcing block 210e on the top of the pile body 100 is first destroyed, thereby economical loss due to reconstruction of the pile. Can be prevented.

On the other hand, the reinforcing blocks 210 are preferably stacked higher than the range (height) of the concentrated load generated by driving.

In other words, it is preferable that the head reinforcement body 200 prevents damage to the pile body 100 as much as possible by allowing the concentrated load to exist only within the reinforcing blocks 210 when the driving force is applied.

To this end, looking at the stacking height (L) of all reinforcing blocks, the stacking height (L) of the head reinforcement body 200 is stressed by the Saint-Venant's Principle from the upper working point (P) during driving. Make it more than this equalization depth (ℓ).

Therefore, the stacking height (L) of the reinforcing blocks 210 is equal to or greater than the depth (ℓ) at which the stress is equalized against the centralized load, as shown by the empirical formula for Saint-Venant's Principle. It is preferable that the reinforcing block 210 is configured to be 1.5 times or more of the diameter.

Furthermore, when a load acts on the outside and an external concentrated load occurs, the stacking height (L) of the reinforcing blocks 210 is equalized to the stress for the external concentrated load by the empirical formula for the principle of Saeng-Benang. It is preferable that the reinforcing block 210 is configured to be at least twice the diameter of the reinforcing block 210 so as to be greater than or equal to the depth (L).

9 is a view showing another embodiment of the reinforcing block 210. Referring to the drawings, the reinforcing block 210 may secure economy by reducing the amount of material required by forming a through hole 215 in the central portion.

In this case, the through hole 215 is formed to have a set diameter that does not affect the strength of the reinforcing block 210 during driving, and is preferably formed as one in the central portion as shown, but is not limited thereto.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those of ordinary skill in the art will appreciate that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical scope of the present invention should be determined by the technical spirit of the appended claims.

The present invention relates to a concrete pile having a head reinforcement that prevents the head from being damaged or damaged during driving, and according to the present invention, the structure is simple and the installation is easy to improve workability and economy, and sufficient rigidity Because it has the structural stability of the concrete pile, it is possible to effectively maintain the structural stability of the concrete pile, and when the head reinforcement body is damaged by driving, it is possible to improve workability and economical efficiency because only the damaged part needs to be replaced without the need to replace the entire composition.

100: pile body 110: concrete body
120: reinforcing bar 200: head reinforcement
210,210a,210b,210c,210d,210e: reinforcement block
211: through hole 212: assembly groove
213: assembly protrusion 214: insertion groove
215: through hole 300,300a,300b: coupling unit
310: fixing nut 320: fastening rod
330: coupler 331: coupling protrusion
332,341: coupling groove 340: fixing part

Claims (5)

A concrete body precast made of precast concrete and installed on the ground to support the load of the upper structure, and a pile body comprising a reinforcing bar placed in the concrete body;
A head reinforcement body installed on the top of the pile body and comprising a plurality of reinforcing blocks stacked in multiple stages to prevent head destruction of the pile body during driving;
Each of the pile body and the head reinforcement body is coupled to, and the head reinforcement body is configured to include a coupling unit to be installed on the upper portion of the pile body:
The coupling unit,
Each of the plurality of through-holes formed in the reinforcing block is coupled through, but a coupling protrusion is formed at the lower end, and a coupling groove into which the coupling protrusion is inserted is formed at
The reinforcing blocks are configured to include a coupler for stacking and bonding to each other by the coupling protrusion and the coupling groove:
The head reinforcement body,
Concrete pile with a head reinforcement body, characterized in that it is configured to include reinforcing blocks having different strengths.
The method of claim 1,
Head reinforcements with different strengths,
Concrete pile with a head reinforcement, characterized in that the reinforcing block having high strength is disposed on the top of the reinforcing block having low strength.
The method of claim 2,
A concrete pile with a head reinforcement, characterized in that the strength of the reinforcing block disposed on the upper surface of the pile body is configured to have a strength lower than that of the concrete body.
The method according to any one of claims 1 to 3,
The coupling unit,
A concrete pile with a head reinforcement, characterized in that it is embedded and fixed to the upper surface of the pile body so that the upper surface is exposed, and further comprises a fixing part into which the coupling protrusion is inserted and fixed to the upper surface.
The method of claim 4,
The head reinforcement body,
Concrete piles having a head reinforcement, which are formed on the upper and lower surfaces of the reinforcing blocks, respectively, and assembly grooves and assembly protrusions that are assembled and coupled to each other when the reinforcing blocks are stacked are formed.

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