KR101683850B1 - Strong connector toward earthquake and vibration for upper end of phc pile and construction method thereof - Google Patents

Strong connector toward earthquake and vibration for upper end of phc pile and construction method thereof Download PDF

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Publication number
KR101683850B1
KR101683850B1 KR1020150185357A KR20150185357A KR101683850B1 KR 101683850 B1 KR101683850 B1 KR 101683850B1 KR 1020150185357 A KR1020150185357 A KR 1020150185357A KR 20150185357 A KR20150185357 A KR 20150185357A KR 101683850 B1 KR101683850 B1 KR 101683850B1
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KR
South Korea
Prior art keywords
steel wire
groove portion
insertion groove
steel
phc
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Application number
KR1020150185357A
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Korean (ko)
Inventor
이준희
조구영
이지현
조자용
Original Assignee
주식회사 동산이엔지
주식회사 태산플랜트
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Priority to KR1020150185357A priority Critical patent/KR101683850B1/en
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    • 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
    • E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
    • 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
    • E02D2250/00—Production methods
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/20—Miscellaneous comprising details of connection between elements

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

Abstract

The present invention provides an exposure apparatus comprising: an exposure unit formed by removing an upper portion of a PHC file to expose an end of a steel wire of a PHC file; A steel material inserted into the exposed portion to surround the steel wire and formed with an insertion groove portion into which the steel wire is fitted; And a connection part for maintaining the fit state of the steel material and the steel wire.

Description

TECHNICAL FIELD [0001] The present invention relates to a head connecting device for PHC pile which is resistant to vibration and vibration,

The present invention relates to a head connecting device for a PHC pile which is resistant to vibration and vibration, and more particularly, to a head connecting device for a PHC pile which is resistant to vibration and vibration, To a head connecting device for PHC pile which is resistant to vibration and vibration, which can reduce the number of components required for connection, and a method of constructing 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) .

Since the head structure of the PHC file according to the prior art has to break the top of the head to expose the steel wire from the head of the PHC file, it is difficult to connect the steel wire of the PHC file with the temporary steel material, It is difficult to reduce the number of parts required for connection between the steel material and the steel wire, and it is difficult to reduce the time and cost required for reinforcing the tofu by connecting the steel wire of the PHC pile with the steel material.

Therefore, there is a need for improvement.

The present invention relates to a head connecting device for PHC pile which is resistant to vibration and vibration, which can easily connect a steel material connected to the head of a PHC file to a steel wire of a PHC file and reduce the number of parts required for connecting the steel material and the steel wire. The purpose of the construction method is to provide.

The present invention provides an exposure apparatus comprising: an exposure unit formed by removing an upper portion of a PHC file to expose an end of a steel wire of a PHC file; A steel material inserted into the exposed portion to surround the steel wire and formed with an insertion groove portion into which the steel wire is fitted; And a connection part for maintaining the fit state of the steel material and the steel wire.

In addition, the exposure unit of the present invention is characterized by including a perforation hole portion formed by perforating a part of the upper surface of the PHC file by a core drill installed and driven in the PHC file.

Further, the exposure unit of the present invention is characterized in that the upper end of the PHC file is crushed.

Further, the connecting portion of the present invention may include a through hole portion formed in the steel material so as to communicate with the insertion groove portion; And a fastening member which is fastened to the through hole portion and presses the steel wire to be fitted into the insertion groove portion.

The connecting portion of the present invention may further include a coupling groove formed in the steel wire and into which the end of the coupling member is inserted.

Further, the connecting portion of the present invention may include an insertion groove portion formed in the steel material so that the steel wire is inserted into the insertion groove portion, the high-frequency welding is performed on the steel material after the steel wire is inserted into the insertion groove portion, And fused.

In addition, the connecting portion of the present invention may include: a through hole portion formed in the steel material so as to communicate with the base insertion groove portion; A fastening member which is fastened to the through hole portion and presses the steel wire to be fitted into the insertion groove portion; A coupling groove formed in the steel wire and into which the end of the coupling member is inserted; And an adhesive member which is applied to the insertion groove portion and the engaging groove portion through the through hole portion and adheres the engaging member to the engaging groove portion.

(A) machining the perforation hole portion so that the steel wire is exposed using a core drill on a head portion of a PHC pile projected from the ground; (b) forming a coupling groove in the steel wire; (c) inserting a steel material having an insertion groove portion into the perforation hole portion and engaging the steel wire with the insertion groove portion; And (d) engaging the engaging member with the engaging groove portion through the through hole portion disposed opposite to the engaging groove portion.

Since the perforation hole portion of the PHC pile according to the present invention is formed to expose the steel wire and connect the steel wire formed with the insertion hole for inserting the steel wire to the steel wire, the steel wire and the steel wire can be directly connected without a separate fastening member, It is possible to reduce the number of parts required to connect the steel to reinforce the tofu and to save time and cost in the construction method for reinforcing the head of the PHC pile.

1 is an exploded perspective view showing a head connecting device for a seismic and vibration resistant PHC pile according to a first embodiment of the present invention.
Fig. 2 is a process diagram showing a method of constructing a head connecting device for PHC pile which is resistant to vibration and vibration according to a first embodiment of the present invention.
3 is a sectional view showing a steel material connecting structure of a head connecting device for a PHC pile resistant to vibration and vibration according to a second embodiment of the present invention.
4 is a cross-sectional view showing a steel material connecting structure of a head connecting device for a PHC pile resistant to vibration and vibration according to a third embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a head connecting device for a PHC pile resistant to vibration and vibration and an installation method thereof according to the present invention 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 an exploded perspective view showing a head connecting device for a seismic and vibration resistant PHC pile according to a first embodiment of the present invention, FIG. 2 is a perspective view of a PHC pile resistant to seismic and vibration according to the first embodiment of the present invention, And a method of constructing the head connecting device is a process drawing shown.

1 and 2, a head connecting apparatus 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 steel material 30 having an exposed portion 16 formed by removing the upper portion and an insertion groove portion 76 which is inserted into the exposed portion 16 to surround the steel wire 12 and into which the steel wire 12 is fitted, (70) for maintaining the fitting state of the steel wire (30) and the steel wire (12).

The PHC file 10 of the present embodiment exposes the steel wire 12 by forming the exposed portion 16 at the top of the PHC pile 10 so that the steel wire 12 is exposed to provide an anti- Reinforcing the head portion of the PHC pile 10 by connecting the steel wire 30 made of high strength steel to the steel wire 12.

Thus, the tensile force and the stiffness of the PHC pile 10 embedded in the ground can be transmitted through the steel wire 12 and the steel material 30.

The exposure unit 16 of the present embodiment includes a perforation hole portion formed by perforating a part of the top surface of the PHC pile 10 by a core drill installed and driven in the PHC file 10. [

The operation of forming the perforation hole portion 16 at the upper end of the PHC pile 10 is such that a perforation hole portion 16 for maintaining an interval from the upper end of the steel wire 12 is formed using the core drill, So that the upper end of the steel wire 12 is exposed from the upper end of the PHC file 10.

The exposed portion 16 may be formed by crushing the upper end portion of the PHC file 10 and may be performed by heavy equipment such as an excavator.

The connecting portion 70 of the present embodiment has a through hole portion 77 formed in the steel material 30 to be connected to the insertion groove portion 76 and a through hole portion 77 formed in the through hole portion 77 and fitted into the insertion groove portion 76 And a fastening member 79 for pressing the steel wire 12.

After the steel wire 12 is exposed by the perforation hole portion 16 formed on the upper surface of the PHC pile 10 by the steel wire 12, the worker inserts the insertion groove portion 76 in the lengthwise direction from the lower end of the steel material 30 And a plurality of through holes 77 are machined so that the inside of the insertion groove 76 is connected to the peripheral surface of the steel 30.

A plurality of through hole portions 77 are formed in a direction perpendicular to the insertion groove portion 76 and the insertion groove portion 76 is pressed by the fastening member 79 fastened through the through hole portion 77, It is possible to prevent the steel wire 12, which is fit-coupled to the outer circumference of the insertion groove portion 76, from being separated from the outside of the insertion groove portion 76.

The connecting portion 70 of the present embodiment further includes the engaging groove portion 78 formed in the steel wire 12 and into which the end portion of the engaging member 79 is inserted so that the engaging member 79 is inserted through the through hole portion 77 It is possible to more effectively prevent the steel wire 12 from being separated from the steel material 30 while the end of the fastening member 79 is engaged with the engagement groove portion 78 at the time of fastening.

The engaging groove portion 78 can be formed by blowing or pressing using a tool or the like on the circumferential surface of the steel wire 12 and a pair of engaging groove portions 78 It can be molded at the end of the steel wire 12.

Of course, after forming the perforated hole portion 16 in the PHC file 10, the engaging groove portion 78 can be formed by using a tool at the end portion of the steel wire 12 exposed through the perforated hole portion 16, 12 may be modified in various ways.

A construction method of a head connecting device for a PHC pile which is resistant to vibration and vibration according to an embodiment of the present invention will be described as follows.

The method for constructing the head connecting device for the PHC file 10 according to the first embodiment of the present invention is characterized in that the core drill is used on the head of the PHC file 10 to be projected from the ground, A step of molding the hole portion 16 and a step of forming a coupling groove portion 78 in the steel wire 12 and a step of inserting the steel material 30 in which the insertion groove portion 76 is formed into the perforation hole portion 16, Engaging the engaging groove 79 with the engaging groove 79 by engaging the engaging member 79 through the through hole 77 disposed opposite to the engaging groove 78, .

First, when the construction of the PHC file 10 is completed and the head is exposed to the ground, the perforation hole portion 16 is processed so that the steel wire 12 is exposed on the upper surface of the PHC pile 10 by using the core drill, The remaining concrete remaining in the hole portion 16 is removed.

A through hole portion 77 of the steel material 30 is formed at one side of the steel wire 12 at the side of the steel wire 12 by forming a pair of engagement groove portions 78 at the end of the steel wire 12 exposed through the perforation hole portion 16. [ So that the through hole portion 77 and the engaging groove portion 78 are positioned so as to face each other and are molded.

After the engaging groove portion 78 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 insert groove portion 76, The member 79 is inserted and a tool such as a wrench bent at right angles 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 77 and the engagement groove portion 78).

As described above, when the steel wire 12 and the steel material 30 are connected, the bent portion formed at the upper end of the steel material 30 is connected to the reinforcing bars installed on the ground, and the tensile force and the grounding force of the PHC pile 10, 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 pillar 12 to prevent the building constructed on the PHC pile 10 from being damaged by an external force such as an earthquake .

3 is a sectional view showing a steel material connecting structure of a head connecting device for a PHC pile resistant to vibration and vibration according to a second embodiment of the present invention.

Referring to FIG. 3, in the head connecting device for PHC pile which is resistant to vibration and vibration according to the second embodiment of the present invention, the connecting portion 70 is formed in the steel material 30 so that the steel wire 12 is fitted The steel material 30 and the steel wire 12 are welded together by performing high frequency welding to the steel material 30 after the steel wire 12 is fitted into the insertion groove portion 76. [

In this embodiment, the insertion groove portion 76 into which the steel wire 12 is inserted is formed long in the vertical direction at the lower end of the steel material 30, and after the steel wire 12 is inserted into the insertion groove portion 76, ) Is used to connect the steel material 30 and the steel wire 12 while performing ultrasonic welding.

Since the connecting part 70 according to the present embodiment does not use any separate fastening member 79, no parts required for constructing the head connecting device of the PHC file 10 are required, And the steel wire 12 can be connected to each other.

4 is a cross-sectional view showing a steel material connecting structure of a head connecting device for a PHC pile resistant to vibration and vibration according to a third embodiment of the present invention.

4, the connecting portion 70 of the head connecting device for the seismic and vibration resistant PHC pile according to the third embodiment of the present invention is formed in the steel material 30 so as to be connected to the base insertion groove portion 76, A fastening member 79 which is fastened to the through hole portion 77 and presses the steel wire 12 which is fitted into the insertion groove portion 76 and a fastening member 79 which is formed on the steel wire 12 and which fastens the fastening member 79 And a bonding member 78 that is applied to the insertion groove portion 76 and the coupling groove portion 78 through the through hole portion 77 and bonds the coupling member 79 to the coupling groove portion 78. [ (78a).

The present embodiment is characterized in that the bonding member 78a is injected through the through hole portion 77 before the fastening member 79 is coupled through the through hole portion 77. After the bonding member 78a is injected, When the fastening member 79 is engaged with the fastening member 79 through the fastening member 79 and the fastening member 79 is engaged with the fastening groove 78, an adhesive member 78a is inserted between the fastening member 79 and the fastening groove 78, So that it is possible to more effectively prevent the fastening member 79 from being separated from the engagement groove portion 78.

As a result, it is possible to easily connect the steel wire connected to the head of the PHC file with the steel wire of the PHC pile and to reduce the number of parts required for connecting the steel wire and the steel wire. Method.

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 connecting device for PHC pile which is resistant to vibration and vibration and its construction method has been described as an example, this is merely an illustrative example, and it is also applicable to other products other than the head connecting device for PHC pile which is resistant to vibration and vibration and its construction method The connecting device of the present invention and its construction method can be used.

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

10: PHC file 12: Steel wire
16: Exposure section 30: Steel
34: connection reinforcing plate 36: nut member
70: connection part 76: insertion groove
77: through hole portion 78:
79: fastening member

Claims (8)

An exposed portion formed by removing the upper portion of the PHC file to expose the steel wire end portion of the PHC file;
A steel material inserted into the exposed portion to surround the steel wire and formed with an insertion groove portion into which the steel wire is fitted; And
And a connecting portion for maintaining the fitting state of the steel material and the steel wire,
Wherein the exposure unit includes a perforation hole portion formed by perforating a part of a top surface of the PHC file by a core drill installed and driven in the PHC file,
The connecting portion
A through hole portion formed in the steel material so as to communicate with the insertion groove portion;
A fastening member which is fastened to the through hole portion and presses the steel wire to be fitted into the insertion groove portion; And
And a coupling groove portion formed in the steel wire and into which an end portion of the coupling member is inserted,
The insertion groove portion is formed to be longer in the longitudinal direction from the lower end of the steel material so that a plurality of the through holes are formed in a direction orthogonal to the insertion groove portion, And a through-hole portion is machined on the head connecting portion.
delete delete delete delete delete delete (a) machining the perforation hole portion so that the steel wire is exposed using a core drill on the head portion of the PHC pile projected from the ground;
(b) forming a coupling groove in the steel wire;
(c) inserting a steel material having an insertion groove portion into the perforation hole portion and engaging the steel wire with the insertion groove portion; And
(d) engaging the engaging member with the engaging groove portion through the through hole portion disposed opposite to the engaging groove portion,
A fastening member which is fastened to the through hole portion and presses the steel wire to be fitted into the insertion groove portion and the steel material is joined to the steel wire by an engaging groove portion formed in the steel wire and into which an end portion of the fastening member is inserted,
The insertion groove portion is formed to be longer in the longitudinal direction from the lower end of the steel material so that a plurality of the through holes are formed in a direction orthogonal to the insertion groove portion, And a through-hole portion is formed in the through-hole.
KR1020150185357A 2015-12-23 2015-12-23 Strong connector toward earthquake and vibration for upper end of phc pile and construction method thereof KR101683850B1 (en)

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KR1020150185357A KR101683850B1 (en) 2015-12-23 2015-12-23 Strong connector toward earthquake and vibration for upper end of phc pile and construction method thereof

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KR1020150185357A KR101683850B1 (en) 2015-12-23 2015-12-23 Strong connector toward earthquake and vibration for upper end of phc pile and construction method thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230020264A (en) 2021-08-03 2023-02-10 주식회사 코위드원 PHC file with sensing line and its soundness measuring device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040095391A (en) * 2003-04-28 2004-11-15 (주)피에스테크 reinforced structure and method combining the head of concrete pile with concrete foundation
KR100934608B1 (en) * 2009-06-24 2009-12-31 김형중 A steel wire anchoring device and precast box, the method of assembling precast box using the same
KR20140067787A (en) * 2012-11-27 2014-06-05 (주)현이앤씨 Removable tendon cable type anchor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040095391A (en) * 2003-04-28 2004-11-15 (주)피에스테크 reinforced structure and method combining the head of concrete pile with concrete foundation
KR100934608B1 (en) * 2009-06-24 2009-12-31 김형중 A steel wire anchoring device and precast box, the method of assembling precast box using the same
KR20140067787A (en) * 2012-11-27 2014-06-05 (주)현이앤씨 Removable tendon cable type anchor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230020264A (en) 2021-08-03 2023-02-10 주식회사 코위드원 PHC file with sensing line and its soundness measuring device

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