KR101683848B1 - Drilling machine for upper end in strong phc pile toward and construction method using that - Google Patents

Drilling machine for upper end in strong phc pile toward and construction method using that Download PDF

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Publication number
KR101683848B1
KR101683848B1 KR1020150190211A KR20150190211A KR101683848B1 KR 101683848 B1 KR101683848 B1 KR 101683848B1 KR 1020150190211 A KR1020150190211 A KR 1020150190211A KR 20150190211 A KR20150190211 A KR 20150190211A KR 101683848 B1 KR101683848 B1 KR 101683848B1
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South Korea
Prior art keywords
phc
phc pile
main body
steel wire
head
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KR1020150190211A
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Korean (ko)
Inventor
이준희
조구영
이지현
조자용
Original Assignee
주식회사 동산이엔지
주식회사 태산플랜트
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Priority to KR1020150190211A priority Critical patent/KR101683848B1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/223—Details of top sections of foundation piles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/24—Prefabricated piles
    • E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/58—Prestressed concrete piles

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The present invention relates to an apparatus for drilling an upper end of a PHC pile robust to earthquake and vibration. The apparatus comprises: a main body seated on an upper surface of a PHC pile by removing an upper portion thereof to expose an end of a steel wire of the PHC pile; a plurality of supports extending from the main body, and restricting a lateral portion of the PHC pile; a guide pole seated on the main body; a slide block slidably installed along the guide pole; a core drill installed on the slide block to form a punched hole in the upper surface of the PHC pile; and a restricting portion fixing the slide block to the guide pole.

Description

TECHNICAL FIELD [0001] The present invention relates to a head punch for a PHC pile which is resistant to vibration and vibration, and a PHC pile head connecting method using the same.

The present invention relates to a head punch for a PHC pile which is resistant to seismic and vibration and a PHC pile head connecting method using the same. More particularly, the present invention relates to a head punch for a PHC pile To a head punch for a PHC pile which is resistant to seismic and vibration, which can prevent deformation or breakage of a PHC pile head generated during a piercing operation, and a PHC pile head connecting method using the same.

In general, when installing bridges and trenches, use H-files or steel pipe files for existing vents. However, in the case of bridges, the cross-sectional size of the pile increases as the length of the pile increases, and the amount of steel pipe pile usage increases.

There is a PHC file (Pretensioned spun High strength Concrete pile) as an alternative file for steel pipe file. The PHC file has an economical advantage which is several times cheaper than the steel pipe file per meter.

In addition, steel pipe files can be withdrawn and reused, but many of them are sold as scrap iron because of the increased number of cut parts due to on-site conditions, which makes it possible to economically replace PHC files.

However, when using the PHC file, the connection with the steel is important, but the arrangement and reinforcement of the head of the PHC file will inevitably follow.

In the process of manufacturing the PHC file, if the steel wire is tensioned to give a prestress, the steel wire is fixed by installing a wedge on the SHOE steel plate at the head of the file.

However, it is necessary to have a head fixing structure because the steel wire fixing part disappears when cutting the head part. At this time, it is required that the head part of the PHC file should be easy to assemble and accuracy of the level and accuracy should be secured.

In order to solve the above problem, a head structure of a PHC file has been developed. In the PHC file head structure according to the related art, the upper part of the PHC file penetrated into the ground is crushed to support the temporary steel, In the structure of the tofu, a plurality of auxiliary reinforcing bars positioned between the strands and arranged vertically, at least one reinforcing bar connected circularly and connecting the auxiliary reinforcing bar and the strand, And a plurality of level adjusting nuts fixed to the plurality of auxiliary reinforcing bars, respectively, and a level adjusting fixing bolt threadedly coupled to the plurality of level adjusting nuts.

The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2012-0125065 (published on Nov. 14, 2012, title of the invention: head structure of PEI pile for connection of a temporary steel material and method of construction thereof) .

The head structure of the PHC file according to the prior art is such that when cutting the head of the PHC file to connect the steel material, the PHC pie exposes the steel wire to expose the steel wire to expose the steel wire to the outside of the PHC file, There is a problem that the connection between the steel material and the steel wire is inadequate because the steel wire may be deformed or broken while being broken.

In order to solve the above-mentioned problem, in the case of forming the perforation hole portion around the steel wire by using the core drill, since the operator performs the perforating operation after holding the core drill and placing the core drill opposed to the PHC pile head, The perforation hole portion can be formed in an undesired portion of the worker while the core drill is moved due to the vibration generated during the drilling operation, and the steel wire can be broken by the pressing force generated during the drilling operation. There is a problem that it may be damaged.

Therefore, there is a need for improvement.

The present invention relates to a seismic isolation structure and a seismic isolation structure capable of forming a perforation hole portion on the upper surface of a PHC file so as to connect a steel material connected to a head portion of the PHC file to a steel wire of the PHC file, And it is an object of the present invention to provide a head punching apparatus for a PHC pile which is resistant to vibration and a method for connecting a head of a PHC pile using the same.

The present invention relates to a PHC pile comprising: a main body which is seated on an upper surface obtained by removing an upper portion of a PHC file to expose an end of a steel wire of the PHC pile; A plurality of supports extending from the body and restricting the sides of the PHC file; A guide post resting on the body; A slide block slidably installed along the guide column; A core drill installed in the slide block to form a perforation hole on an upper surface of the PHC file; And a restricting portion for fixing the slide block to the guide column.

In addition, the guide column of the present invention is provided with a support block which is seated upright on the main body, and the main body is provided with a fixing shaft inserted into the support block.

Further, the supporting base of the present invention is extended from the main body toward the rim of the PHC pile, and a bent portion disposed adjacent to the PHC pile side is formed at the end of the supporting base.

The restricting portion of the present invention may further include: a shaft member rotatably installed in the slide block in a direction orthogonal to the extending direction of the guide column; And a lever member connected to a rotation shaft of the shaft member and bent and extended to the outside of the slide block.

(A) cutting the end of the PHC pile to adjust the height of the top surface formed on the head of the PHC pile installed in the ground and exposed to the ground; (b) placing a jig having a plurality of supports on a top surface of the PHC file so that a core drill is opposed to the top surface of the top of the PHC file; (c) disposing a core drill provided upright on the jig and lifting and lowering along the guide column so that the perforation of the core drill is opposed to the end of the steel wire exposed on the top surface of the PHC pile; (d) forming a perforation hole portion around the steel wire by driving the core drill; And (e) tightening and connecting the steel material to the end of the steel wire.

Further, in the step (e) of the present invention, the steel material having the insertion groove portion is inserted into the perforation hole portion, the steel wire is fitted into the insertion groove portion, and a fastening member is simultaneously installed on the steel material and the steel wire .

In addition, the end portion of the steel material of the present invention is provided with a connection reinforcing portion extending laterally so as to be connected to a structure to be installed on the ground.

The head punching apparatus for a PHC pile which is resistant to vibration and vibration according to the present invention and the PHC pile head connecting method using the same are characterized in that the core drill is seated on the head of the PHC pile and the core pile is separated from the PHC pile It is possible to prevent the core drill from being separated from the PHC pile due to the vibration generated during the piercing operation, thereby preventing the steel wire from being deformed or damaged and preventing the safety accident caused by the core drill departure There is an advantage to be able to.

In addition, the head punching apparatus for a PHC pile which is resistant to vibration and vibration according to the present invention and the PHC pile head connecting method using the same have a main body for supporting and supporting the core drill on the head portion of the PHC pile, The perforation hole portion can be formed in the position, and the time and cost required for the head connecting operation of the PHC file can be reduced.

The PHC pile head punching apparatus and the PHC pile head punching method using the same according to the present invention can directly connect the steel material and the steel wire without a separate fastening member since the steel material forming the insertion hole for inserting the steel wire is connected to the steel wire, It is possible to reduce the number of parts required to connect the steel material to reinforce the head of the file and to save time and cost in the construction method for reinforcing the head of the PHC file.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a head punch for a seismic and vibration resistant PHC pile according to an embodiment of the present invention.
2 is a process diagram showing a PCH file head connection method using a head punch for a seismic and vibration resistant PHC file according to an embodiment of the present invention.
3 is an exploded perspective view showing a steel material connection structure according to a PHC pile head connection method using a head punch for a seismic and vibration resistant PHC pile according to an embodiment of the present invention.
FIG. 4 is a perspective view illustrating a steel material connection structure according to another embodiment of the present invention, in which a head punch for a PHC pile resistant to vibration and vibration is used.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a head punch for a PHC pile resistant to vibration and vibration according to the present invention and a PHC pile head connecting method using the same will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a view showing a head punch for a seismic and vibration resistant PHC pile according to an embodiment of the present invention. FIG. 2 is a perspective view of a head punch for a PHC pile resistant to vibration and vibration according to an embodiment of the present invention. FIG. 3 is a view illustrating a steel material connecting structure according to a PHC file head connecting method using a head punch for a PHC pile resistant to vibration and vibration, according to an embodiment of the present invention Fig.

1 to 3, a head punch for a seismic and vibration resistant PHC pile according to an embodiment of the present invention includes a PHC pile 10 for exposing an end of a steel wire 12 of a PHC file 10, A plurality of support rods 84a extending from the main body 84 and restricting the sides of the PHC pile 10 and a guide pillar A slide block 88a slidably installed along the guide column 86 and a core drill 88a provided on the slide block 88a to form a perforation hole portion 16 on the upper surface of the PHC file 10 And a restricting portion 88 for fixing the slide block 88a to the guide pillar 86. [

The main body 84 is formed in a relatively small disk shape as compared with the diameter of the PHC file 10 and a plurality of support posts 84a are laterally extended from the rim of the main body 84 to form a tripod- And a plurality of supporting posts 84a are seated on the upper surface of the PHC file 10 so that the main body 84 is seated on the upper surface of the PHC file 10.

The main body 84 is provided with a fixing shaft 85a to be inserted into the supporting block 85 so that the main body 84 and the main body 84 are fixed to the main body 84, The main body 84 is fixed to the head of the PHC pile 10 by adjusting the length of the support stand 84a after the support stand 84a is seated on the upper surface of the PHC pile 10, The guide pillar 86 is mounted on the main body 84 so that the fixed shaft 85a is inserted into the support block 85 and the guide pillar 86 is installed upright on the upper surface of the main body 84. [

The guide pillar 86 extends upward from the upper surface of the support block 85 and has a plurality of guide grooves or guide protrusions formed on the circumferential surface thereof to slide in a vertical direction along the guide pillar 86 So that it can be raised and lowered.

The core drill 80 is connected to the slide block 88a so as to be arranged laterally from the slide block 88a and the perforations of the core drill 80 are disposed on the lower side of the jig 82, When the drill 80 is installed, the perforations of the core drill 80 are disposed to face the upper surface of the PHC pile 10. [
The perforations of the core drill 80 are formed in a cylindrical shape to form the perforated hole portion 16 around the end of the steel wire 12 so that the core drill 80 is driven to form the perforated hole portion 16 while the perforated portion is rotated And the end portion of the steel wire 12 is exposed while maintaining the gap with the inner wall of the perforated hole portion 16.

The core drill 80 is disposed on the outer circumferential surface of the slide block 88a so that the core drill 80 is disposed in parallel with the guide pillar 86 so that a perforated portion provided at the lower end of the core drill 80 is disposed downward, When the core drill 80 is driven by the operation of the operator after arranging the core drill 80 so as to face the upper end, the perforation hole portion 16 is formed around the steel wire 12 to expose the end of the steel wire 12 .

The operator inserts the upper end of the steel wire 12 by inserting the steel material 30 in which the insert groove portion 76 is formed into the perforation hole portion 16 by molding the engagement groove portion 78a at the end of the steel wire 12, The end of the fastening member 79 is engaged with the engaging groove portion 78a by engaging the engaging member 79 with the groove portion 76 and connecting the fastening member 79 through the through hole portion 78 formed in the steel material 30. [

Since the through hole portion 78 is formed in a direction orthogonal to the insertion groove portion 76, the end portion of the fastening member 79, which penetrates from the outer wall of the steel material 30 to the inside of the insertion groove portion 76, And is engaged with the groove portion 78a so as to prevent the steel wire 12 from being separated from the insertion groove portion 76.

Since the support 84a extends from the main body 84 toward the rim of the PHC pile 10 and the bent portion 84b disposed adjacent to the side of the PHC pile 10 is formed at the end of the support pile 84a, And the bent portions 84b are brought into close contact with the upper surface and the peripheral surface of the PHC pile 10 and the three or more support rods 84a extend from the main body 84, The main body 84 is seated on the upper surface of the PHC file 10 so as not to flow by the main body 84b.

Here, the support 84a is provided to be able to project from the main body 84, and a plurality of supports 84a are installed to project and retract in the same direction and the same length, When a wrench having gear teeth is inserted in the hole and then rotated forward or reverse, a plurality of supports 84a are projected or inserted from the main body 84 at the same time.

Therefore, when the main body 84 and the support 84a are mounted on the upper surface of the PHC pile 10 and the wrench is connected to the main body 84 and rotated, the support 84a is inserted into the main body 84, The bent portion 84b provided at the end is brought into close contact with the circumferential surface of the PHC pile 10 and the main body 84 and the support pile 84a are unblocked to the head of the PHC pile 10. [

The restricting portion 88 includes a shaft member rotatably mounted on the slide block 88a in a direction orthogonal to the extending direction of the guide column 86 and a shaft member connected to the rotation shaft of the shaft member, And a lever member 88b extending from the lever member 88b.

The slide block 88a is formed into a cylindrical or square columnar shape surrounding the guide column 86. The shaft member is inserted inward from the peripheral surface of the slide block 88a and is bent from the outer end of the shaft member 88a, The member 88b is extended.

Therefore, when the operator rotates the lever member 88b downward or upward, the shaft member is inserted into the slide block 88a and presses the outer wall of the guide column 86, so that the motion of the slide block 88a is restricted.

The main body 84 and the support 84a are placed on the upper surface of the PHC pile 10 and the lever member 88b is rotated to release the restraint of the slide block 88a, The perforation is seated on the upper surface of the PHC pile 10 so that the perforated part is opposed to the end of the steel wire 12 and the shaft member is inserted into the slide block 88a by rotating the lever member 88b in the reverse direction again, (88a) is prevented from sliding along the guide pillar (86).

Thereafter, when the core drill 80 is driven by the operation of the operator, the end portion of the steel wire 12 can be exposed while forming the perforation hole portion 16 at the end of the steel wire 12.

A head punch for a PHC pile resistant to vibration and vibration according to an embodiment of the present invention constructed as described above and a PHC pile head connecting method using the same will be described below.

The PHC file 10 head coupling method using a head punch for PHC pile which is resistant to vibration and vibration according to an embodiment of the present invention is a method for connecting a head part of a PHC pile 10 installed in the ground, Cutting the end portion of the PHC pile 10 so as to adjust the height of the top surface of the core drill 80 so that the core drill 80 is opposed to the top surface of the head portion of the PHC pile 10, A core drill 80 is installed on the jig 82 so that the guide pillar 86 is erected upright on the jig 82 and the core drill 80 is lifted and lowered along the guide pillar 86, Placing the perforated hole portion 16 in the periphery of the steel wire 12 by driving the core drill 80; placing the perforated hole portion 16 in the vicinity of the end of the steel wire 12 exposed on the upper surface of the PHC pile 10; And a step of fastening and connecting the steel material (30) to the end of the steel wire (12).

First, the PHC file 10 is installed so that the tofu protrudes on the ground. The upper portion of the PHC pile 10 is cut using the cutting tool 81 to expose the upper surface so that the end of the steel wire 12 can be seen, A support 84a is attached to the main body 84 while the jig 82 having the plurality of support rods 84a arranged in the shape of a circle is placed on the top surface of the PHC pile 10 and then the wrench is inserted into the main body 84 and rotated in the forward or reverse direction. 84 so that the bent portion 84b is brought into close contact with the peripheral surface of the PHC pile 10 to fix the main body 84 and the support pile 84a to the head of the PHC pile 10. [

The guide pillar 86 is seated upright on the upper surface of the main body 84 so that the fixing shaft 85a protruding from the main body 84 is inserted into the supporting block 85 and the guide pillar 86 is inserted into the PHC pile 10 ) From the center to the upper side.

The core drill 80 is connected to the slide block 88a slidably installed on the guide column 86 so that the perforations are disposed to face the upper end of the steel wire 12.

At this time, the worker releases the restraint of the slide block 88a by rotating the lever member 88b, moves the slide block 88a in the vertical direction or rotates the support block 85 about the fixed shaft 85a So that the perforations are opposed to the ends of the steel wires 12.

Thereafter, when the lever member 88b is rotated in the reverse direction to press the shaft member into the slide block 88a, the shaft member presses the guide column 86 to restrict the linear movement of the slide block 88a, 80 are fixed to the guide pillar 86 so as not to flow.

The guide post 86 and the main body 84 are bent up by a plurality of support rods 84a extending in the lateral direction of the main body 84 and bent downward from the end of the support rods 84a, The support 84a and the main body 84 can be held on the upper surface of the PHC file 10 by being brought into close contact with the peripheral surface of the PHC file 10. [

After the core drill 80 is fixed as described above, the perforation hole portion 16 is formed by the operation of the operator and the forming process of the perforated hole portion 16 is repeated so that all of the steel wires 12 exposed on the upper surface of the PHC pile 10 A plurality of perforation hole portions 16 are formed so as to expose the ends of the perforated hole portion 16 and then the remaining concrete remaining in the perforated hole portion 16 is removed and the steel material 30 is connected to the end portion of the exposed steel wire 12.

The step of connecting the steel material 30 includes the steps of inserting the steel material 30 in which the insert groove portion 76 is formed into the perforation hole portion 16 to fit the steel wire 12 into the insert groove portion 76, And a fastening member 79 which is coupled to the steel wire 12 at the same time.

A pair of engagement grooves 78a are formed at the end of the steel wire 12 exposed through the perforated hole portion 16. At this time, the through hole portion 78 of the steel material 30 is disposed on one side of the steel wire 12 The positioning is made so that the through hole portion 78 and the engaging groove portion 78a are arranged so as to face each other.

After the engaging groove portion 78a is formed in the steel wire 12, the steel material 30 is inserted into the perforation hole portion 16 to fit the steel wire 12 into the insertion groove portion 76, The member 79 is inserted and a tool such as a wrench bent at a right angle is inserted into the perforation hole portion 16 to rotate the head portion of the fastening member 79 while the fastening member 79 is inserted into the through hole portion 78 and the engagement groove portion 78a.

When the steel wire 12 and the steel 30 are connected as described above, the connection reinforcing portion formed on the upper end of the steel material 30 is connected to the reinforcing bars installed on the ground, so that the tensile force and the grounding force of the PHC pile 10 deeply embedded in the ground The strength of the head of the PHC pile 10 can be reinforced by being transmitted to the steel material 30 and the reinforcing bars along the steel wire 12 and the building constructed on the PHC pile 10 is damaged by an external force such as an earthquake .

FIG. 4 is a perspective view illustrating a steel material connection structure according to another embodiment of the present invention, in which a head punch for a PHC pile resistant to vibration and vibration is used.

Referring to FIG. 4, the PHC pile head connecting method using a head punch for a seismic and vibration resistant PHC pile according to another embodiment of the present invention is characterized in that the end portion of the steel wire 12 exposed through the pierced hole portion 16 And fastening the fish nuts 38 and connecting the steel nut 30 to the fish nut 38 or the steel 30 made of a stranded wire.

A connecting reinforcing portion 34 made of a panel is coupled to a structure to be installed on the ground by means of a nut member 36 on the end portion of a steel material 30 made of reinforcing steel and a steel material 30 made of a stranded wire.

Thereby, it is possible to form a perforation hole portion on the upper surface of the PHC pile so as to connect the steel wire connected to the head portion of the PHC file with the steel wire of the PHC pile and to prevent the deformation or breakage of the PHC pile head portion, It is possible to provide a head perforating apparatus for a PHC pile which is strong to a user and a PHC pile head connecting method using the same.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

In addition, although the head punching apparatus for PHC pile which is resistant to vibration and vibration and the PHC pile head connecting method using the pile head punching apparatus have been described as an example, the present invention is merely an example, and a PHC pile head perforating apparatus and a PHC pile head connecting method The product may also be used with the punching apparatus of the present invention and the connecting method using the same.

Accordingly, the true scope of the present invention should be determined by the following claims.

10: PHC file 12: Steel wire
16: perforation hole portion 30: steel material
34: connection reinforcing portion 36: nut member
38: Fish nut 70: Connection
76: insertion groove portion 78: penetration hole portion
78a: engagement groove portion 79: fastening member
80: core drill 81: cutting tool
82: jig 84: main body
84a: Support base 84b:
85: Support block 85a: Fixed shaft
86: guide post 88:
88a: Slide block 88b: Lever member

Claims (7)

A main body which is seated on an upper surface formed by removing an upper portion of a PHC file to expose a steel wire end of the PHC file;
A plurality of supports extending from the body and restricting the sides of the PHC file;
A guide post resting on the body;
A slide block slidably installed along the guide column;
A core drill installed in the slide block to form a perforation hole on an upper surface of the PHC file; And
And a restricting portion for fixing the slide block to the guide post,
Wherein the guide column is provided with a support block which is seated upright on the main body, the main body is provided with a fixing shaft inserted into the support block,
Wherein a plurality of the supports extend laterally from the main body to form a three-legged jig,
Wherein the perforation of the core drill is formed in a cylindrical shape so as to form the perforation hole portion around the end of the steel wire.
delete The method according to claim 1,
Wherein the supporting base extends from the main body toward the rim of the PHC pile and the end of the supporting pile is formed with a bent portion disposed adjacent to the PHC pile side portion.
The apparatus according to claim 1,
A shaft member rotatably installed in the slide block in a direction orthogonal to an extending direction of the guide column; And
And a lever member connected to a rotation shaft of the shaft member and bent to extend outside the slide block.
(a) cutting the end of the PHC pile to adjust the height of the top surface formed on the head of the PHC pile installed in the ground and exposed to the ground;
(b) placing a jig having a plurality of supports on a top surface of the PHC file so that a core drill is opposed to the top surface of the top of the PHC file;
(c) disposing a core drill provided upright on the jig and lifting and lowering along the guide column so that the perforation of the core drill is opposed to the end of the steel wire exposed on the top surface of the PHC pile;
(d) forming a perforation hole portion around the steel wire by driving the core drill; And
(e) tightening and connecting a steel material to the end of the steel wire,
Wherein the step (d) comprises: the guide column having a support block mounted upright on the main body of the jig; and the main body having the fixing shaft inserted into the support block,
Wherein a plurality of the supports extend laterally from the main body to form the three-legged jig,
Wherein a perforation of the core drill is formed in a cylindrical shape so as to form the perforation hole portion around the end of the steel wire,
The step (e) includes the step of inserting the steel material in which the insertion groove is formed into the hole, inserting the steel wire into the insertion groove, and joining the steel material and the steel wire simultaneously. PHC pile head connection method using head punch for PHC pile which is resistant to vibration and vibration.
delete 6. The method of claim 5,
Wherein the end portion of the steel material is provided with a connection reinforcing portion extending laterally so as to be connected to a structure to be installed on the ground, wherein the seam and vibration resistant PHC pile head punching device is used.
KR1020150190211A 2015-12-30 2015-12-30 Drilling machine for upper end in strong phc pile toward and construction method using that KR101683848B1 (en)

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KR20190131944A (en) * 2018-05-18 2019-11-27 최건옥 Concrete file top cutting equipment
CN113585263A (en) * 2021-07-28 2021-11-02 中建五局第三建设有限公司 Pile head breaking equipment and method

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JP2014083662A (en) * 2012-10-26 2014-05-12 Jfe Steel Corp Drilling device and drilling method

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KR20190131944A (en) * 2018-05-18 2019-11-27 최건옥 Concrete file top cutting equipment
KR102108032B1 (en) * 2018-05-18 2020-05-07 최건옥 Concrete file top cutting equipment
CN113585263A (en) * 2021-07-28 2021-11-02 中建五局第三建设有限公司 Pile head breaking equipment and method
CN113585263B (en) * 2021-07-28 2023-07-28 中建五局第三建设有限公司 Pile head breaking equipment and pile head breaking method

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