KR20140131648A - Coupling apparatus of pile using coupler integrated pc nut - Google Patents

Coupling apparatus of pile using coupler integrated pc nut Download PDF

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Publication number
KR20140131648A
KR20140131648A KR1020130050463A KR20130050463A KR20140131648A KR 20140131648 A KR20140131648 A KR 20140131648A KR 1020130050463 A KR1020130050463 A KR 1020130050463A KR 20130050463 A KR20130050463 A KR 20130050463A KR 20140131648 A KR20140131648 A KR 20140131648A
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KR
South Korea
Prior art keywords
pile
head
nut
bolt fastening
bolt
Prior art date
Application number
KR1020130050463A
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Korean (ko)
Inventor
김병철
장상옥
김기웅
김유라
Original Assignee
김병철
김유라
김기웅
장상옥
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 김병철, 김유라, 김기웅, 장상옥 filed Critical 김병철
Priority to KR1020130050463A priority Critical patent/KR20140131648A/en
Publication of KR20140131648A publication Critical patent/KR20140131648A/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
    • E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
    • E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
    • E02D5/526—Connection means between pile segments
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0046—Production methods using prestressing techniques
    • 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

Abstract

The present invention relates to a pile coupling device using a coupler integrated with a PC nut. The purpose of the present invention is to provide the pile coupling device using the coupler integrated with the PC nut, capable of fixing a steel wire while jointing piles by forming the PC nut on an end coupler and a head coupler which are embedded in the end and the head of the pile; having a coupling bolt installed to be tilted to connect the end coupler to the head coupler in order to facilitate connection of the pile; and having a guide pin installed on the pile positioned on the lower part to make the pile placed on the upper part so that the pile is placed on a regular position during a construction process of connecting the piles. The pile coupling device comprises a head coupler which is installed at regular intervals from the head of the pile along the circumference of the pile and has a PC steel wire fixed on one side thereof and a bolt coupling hole formed on the other side thereof, wherein the bolt coupling hole is inclined downward from the upper surface of the head toward the center of the pile; an end coupler which is installed at regular intervals from the end of the pile along the circumference of the pile to correspond to the head coupler, wherein the PC wire is fixed on one side thereof and a bolt coupling hole, which is connected to the bolt coupling hole of the head coupler and has an inclined shape penetrating into the side of the end, is formed on the other side; and a coupling bolt which is coupled through the inclined bolt coupling hole of the end coupler to the bolt coupling hole of the head coupler to connect the end coupler to the head coupler.

Description

Technical Field [0001] The present invention relates to a pile coupling using a PC nut integral connector,

The present invention relates to a coupling device for a pile using a PC nut integral type connector, which comprises a front end connector for fixing the steel wire of the PHC pile, and a PC nut integral connector for slanting the fastening bolt at the head end connector, The present invention relates to a pile joint.

Generally, when a construction or civil engineering structure is to be applied to a soft ground, a pile connected to the support layer from the ground surface is used so as to secure the stability of the structure by transferring the load of the structure to the support layer.

The support layer for pile construction is located at a depth of several tens of meters from the surface of the ground. In case of piles, the pile is made up to 15 m or less in length for convenience of production and transportation. .

These piles are made of steel pipe piles or PHC piles. The PHC piles are manufactured by introducing a prestressed prestress into a hollow high-strength concrete pile fabricated by centrifugal force, and the PHC piles Is characterized by excellent resistance to bending resistance, vertical force and horizontal force, and it is widely used when it is desired to construct a structure on soft ground because it can be constructed using a pneumatic method.

The PHC pile generally has a hollow pile body made of hollow concrete, a protection cap provided at the tip and a head of the pile body, a PC installed at the inside of the pile body and having both ends fixed to the protection cap, And a steel wire.

As a method for connecting the PHC pile having the protective cap formed thereon, there is a method of welding the periphery of the two caps with the upper pile disposed so that the cap installed at the head of the lower pile and the cap provided at the tip of the upper pile are in contact with each other The joints between the piles are made.

However, there is a difference in quality depending on the conditions of the worksite, the weather, and the skill of the worker where the work is actually performed. Therefore, it is inevitably necessary to have a skilled welder having a high cost, There is a problem that the durability (quality deterioration) of the cap is lowered by the welding residual stress due to the long (actual working time is short). In addition, it is difficult to maintain the quality beyond a predetermined level, and thus there are problems in paying a large cost for quality control.

In consideration of the above problems, various methods of performing the joint operation between a pile and a pile have been proposed. However, the conventional joint apparatus used in the costly pile joint method is not easy to manufacture and construct due to its complicated structure, The pile head and the tip of the pile are separately machined to reduce the strength of the head and the head of the pile.

In addition, the PHC pile having the protection cap installed therein has a problem that the cost is increased due to the provision of a metal protective cap.

In order to reduce the cost, a PHC pile having no protective cap is manufactured. The PHC pile is installed to be fixed to a plurality of PC nuts embedded in the pile body.

Since the PHC pile having no cap formed at the tip and the head can not be joined through welding, the PHC pile is connected using a separate coupling device as disclosed in Japanese Patent No. 10-0835777.

However, such a pile joint device requires a separate joint device between the upper pile and the lower pile, so that the operation is troublesome and the joint device is heavy in weight, which makes it difficult for the operator to handle during installation and transportation.

Patent No. 10-0835777

In order to solve the above problems, an object of the present invention is to provide a pile nut which is fixed to a tip connecting portion and a toe connecting portion of a pile, The pile is connected to the front end connection and the head end connection so that the pile can be easily connected. In the process of connecting the pile, a guide pin is installed on the pile located at the lower part so that the upper pile can be installed The present invention provides a pile joint using a PC nut integral connector.

According to an aspect of the present invention, there is provided a pile of a pile, comprising: a plurality of piles disposed at predetermined intervals along a circumferential direction of a pile, wherein a PC steel wire is connected to one side of the pile, A head connector having a bolt fastening hole formed in a downward inclined shape toward the center of the pile at an upper surface thereof; The PC steel wire is fixed to one side of the pile and the other side is connected to the bolt fastening hole at the time of pile joining and is sloped to the side of the front end of the pile. A tip end connector having a bolt fastening hole of a shape; And a fastening bolt fastened to the bolt fastening hole of the head fastening hole through the bolt fastening hole of the inclined tip end fastening hole to connect the tip end fastening fitting and the head fastening fitting.

The head connecting portion may include a first PC nut portion to which the PC steel wire is connected, a first extending portion formed to protrude from a side surface of the first PC nut portion, and a second extending portion formed integrally with the first extending portion, A first bolt fastening portion having a bolt fastening hole formed therein; Wherein the front end connector comprises: a second PC nut part to which the PC steel wire is connected; A second extension part protruding from a side surface of the second PCB nut part; And a second bolt fastening part formed integrally with the second extension part and formed in an inclined shape in communication with the bolt fastening hole of the head fastening part and having a bolt fastening hole opened to the side of the tip end.

The head end connector is configured such that the first PC nut portion and the bolt fastening hole are located on the same line with respect to the first extending portion, and the front end connecting portion is formed such that the second PC nut portion and the bolt fastening hole are mutually And is located on a line.

The head end connector is configured such that the first PC nut portion is positioned on one side of the first extending portion, and the first PC nut portion is positioned on the other side of the first extending portion, so that the first bolt fastening portion and the first PC connecting portion, Wherein the nut portion is configured to be staggered with respect to each other, the tip end connector is configured such that the second PC nut portion is positioned on one side of the second extension portion, and the second PC nut portion is configured to be positioned on the other side of the second extension portion, And the second bolt fastening part and the second PC nut part are staggered from each other.

And a plurality of guide pins provided on the first PC nut portion of the head end connector and fitted to the second PC nut portion formed on the tip end connecting portion of another pile to be connected, thereby facilitating the connection of the PHC piles. .

And the guide pin is screwed to the first PC nut portion; A tool engagement surface formed on both sides of the tool engagement surface in such a manner that the tool engagement surface is vertically protruded from the upper part of the screw engagement part and is fitted in the second PC nut part and is easily rotated through the tool, And a fitting portion.

And a reinforcement cap installed along the edge of the head and the tip of the pile to cover the top and sides of the head and the head to prevent breakage during hitting.

As described above, according to the present invention, since the bolt fastening holes of the head connecting portion and the bolt fastening holes of the front end connecting portion are inclined, it is possible to insert the fastening bolt from the outside of the upper pile, It is possible to shorten the period of the connection.

In addition, since the pile is manufactured by pouring the tofu connector and the front connector at the head and the head of the pile in manufacturing the pile, the pile can be easily constructed using only the fastening bolt without a separate joint device installed between the piles .

In addition, it is possible to reduce the cost of the material because it is not necessary to separately form the PC nut and the connection port by fixing the PC steel wire that is placed inside the pile through the head connector and the head connector.

In addition, it is a very useful invention for fast pile construction because it is fast and simple to place piles in a state where a guide pin is installed on a first PC nut part of a lower pile head connection and upper and lower piles are jointed.

1 is an exploded perspective view showing a joint structure of a pile using the pile joining device of the present invention,
2 is an exploded perspective view showing the pile joint device of the present invention,
3 is a perspective view showing the pile joint device of the present invention,
FIG. 4 is a sectional view showing a joint structure of a pile using the pile joint device of the present invention,
FIG. 5 is a cross-sectional view illustrating a state where a pile is connected using the pile joining device of the present invention,
6 is a perspective view showing a reinforcing cap attached to a pile head of the present invention,
FIG. 7 is an exploded perspective view illustrating a coupling structure of a head connector and a front connector according to another embodiment of the present invention;
FIG. 8 is a perspective view illustrating a coupling structure of a head connector and a front connector according to another embodiment of the present invention; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a perspective view showing a pile joint structure using the pile joint device of the present invention, FIG. 2 is an exploded perspective view showing the pile joint device of the present invention, FIG. 3 is an assembled perspective view showing the pile joint device of the present invention, FIG. 5 is a cross-sectional view illustrating a state where a pile is connected using the pile joining device of the present invention, and FIG.

As shown in the drawings, the present invention is characterized in that a plurality of head end connectors 100, which are installed at regular intervals along the circumferential direction of the pile 10 at the head of the pile 10 and to which the PC steel wire 20 inside the pile 10 is connected, A plurality of front end connectors 200 provided at predetermined intervals on the ends of the piles 10 so as to correspond to the head end connectors 100 and connected to PC wires 20 inside the piles 10, 200 so as to join the peg 10 and the peg 10 to each other so that the peg 10 and the peg 10 can be jointed to each other by tightening the head connector 200 and the head connector 100, And a bolt (300).

The head end connector 100 includes a cylindrical first PC nut part 110 having a PC wire 20 connected to the inside of the pile 10 and threaded therein, The first extension part 120 is integrally formed with the first extension part 120 and protrudes to the side of the bolt fastening hole 100. The fastening bolt 300 has a bolt fastening hole And a first bolt coupling part 130 in which the first bolt coupling part 131 is formed.

The head connector 100 constructed as described above is installed to be embedded in the head of the pile 10 so that the PC steel wire 20 is fixed through the first PC nut part 110. The bolt fastening hole 131 is formed in the pile The inlet portion is exposed to the upper surface of the head portion so as to be able to install the fastening bolts 300 by communicating with the bolt fastening holes 231 formed in the front end connector 200 at the time of jointing.

The distal end connector 200 includes a cylindrical second PC nut part 210 having a PC steel wire 20 connected to the inside of the pile 10 and threaded therein, And a second extension part 220 formed integrally with the second extension part 220 and capable of mounting the fastening bolts 300. The bolts 300 of the head end fastening part 100 may be formed integrally with the second extension parts 220, And a second bolt fastening part 230 having a bolt fastening hole 231 communicating with the fastening hole 131 formed in an inclined manner.

The end connector 200 constructed as described above is installed to be embedded in the tip of the pile, and the bolt fastening hole 231 is formed to be exposed to the side of the tip so that the fastening bolt 300 can be installed from the outside of the pile.

The first bolt coupling part 130 of the head coupling 100 is configured to be positioned on the same line as the first PC nut part 110 about the first extension part 120. At this time, The second bolt coupling part 230 is positioned on the same line as the second PC nut part 210 around the second extended part 220 so that the bolt coupling holes 131 and 231 can communicate with each other.

In the present invention, the first PC nut part 110 of the head end connector 100 is fitted to the second PC nut part 210 of the end connecting part 200 provided on another pile 10 to be connected, And a guide pin 400 for allowing the first and second guide members 10 to be positively positioned.

The guide pin 400 is inserted into the second PC nut part 210 formed at the front end connector 200 in the process of seating the upper pile 10 to be connected to the lower pile 10, The coupling 100 and the leading end coupling 200 of the pile 10 are positioned on the same line so that the head coupling 100 and the bolt coupling holes 131 and 231 of the coupling end 200 are connected to each other, So as to facilitate the installation.

The guide pin 400 includes a threaded portion 410 that is screwed to the first PC nut portion 110 and a second PC nut portion 210 that is formed to vertically protrude from the upper portion of the threaded portion 410, And a fitting portion 420 having a tool engagement surface formed on both sides thereof in a planar shape so as to be inserted and fastened through the tool.

The fitting portion 420 is formed such that the upper end portion thereof is rounded so as to be easily fitted to the second PC nut portion 210.

At least three guide pins 400 may be installed at regular intervals to facilitate the connection of the upper pile 10 and the lower pile 10.

FIG. 6 is a perspective view of a reinforcing cap attached to a pile head of the present invention. FIG. 6 is a perspective view of a reinforcing cap attached to a pile head of the present invention. And a reinforcing cap (500) for preventing the cap (500).

The reinforcing cap 500 includes a horizontal part 510 for covering a part of the top surface of the head part and a vertical part 520 for vertically extending at one side of the horizontal part 510 and covering the head part of the head part ).

The reinforcing cap 500 is installed at a relatively weak edge portion of the pile 10 to prevent damage to the tip or head of the pile 10 when the pile 10 is hammered and to prevent the bending moment Thereby preventing breakage of the joint.

FIG. 7 is an exploded perspective view illustrating a coupling structure of a head connector and a front connector according to another embodiment of the present invention. FIG. 8 is an assembled perspective view illustrating a coupling structure of a head connector and a front connector according to another embodiment of the present invention,

As shown in the drawing, the head connector 100 of the present invention is configured such that the first bolt fastening part 130 is positioned on one side of the first extending part 120 and the first PC nut part 110 is positioned on the first extending part 120 The first bolt coupling part 130 and the first PC nut part 110 are positioned to be offset from each other with respect to the first extension part 120. [ At this time, the second bolt fastening part 230 of the tip end connecting part 200 is positioned to be offset from the second PC nut part 210 about the second extended part 220 so that the bolt fastening holes 131 and 231 are communicated with each other .

The first bolt coupling part 130 and the first PC nut part 110 are staggered from each other so that when the head coupling 100 and the leading end coupling 200 are fastened through the larger fastening bolt 300, It is possible to secure a space for installing the display unit 300.

More specifically, as shown in the drawing, the first bolt fastening part 130, the first PC nut part 110, the second bolt fastening part 230, and the second PC nut part 210 are staggered from each other, The diameter of the bolt fastening holes 131 and 231 may be formed to be larger than the diameter of the bolt fastening holes 131 and 231 without interference with the first PC nut part 110 and the second PC nut part 210, So that even if the fastening bolts 300 having a large diameter are used, a space for installing the fastening bolts 300 can be ensured and a stable pit can be sounded.

That is, when the pile 10 is joined through the larger fastening bolts 300 for the purpose of improving the binding force, the fastening space of the fastening bolts 300 can be secured and the pile can be stably installed.

On the inner circumferential surfaces of the first and second PC nut parts 210 and 210, hooking protrusions 111 and 211 are formed to hook the head 21 of the PC steel wire 20.

The bolt fastening hole 231 of the front end connecting part 200 and the bolt fastening hole 131 of the head fastening part 100 are communicated in an inclined manner and the bolt fastening hole The pile 10 is exposed to the side of the pile so that the pile 10 is positioned at the top and the bottom of the pile 10 is in contact with the top of the pile 10, It is possible to fasten the end connector 200 and the head connector 100 so that the joint construction of the pile can be performed easily.

Therefore, it is not necessary to provide a separate coupling device for pile joints, so that the material cost can be reduced. Since the end connector 200 and the head connector 100 are pre-assembled during the manufacturing process of the pile 10, ), It is possible to construct the pile joints quickly and easily.

In addition, since the PC nut for fixing the PC steel wire 20 is integrally formed, the pile head and the tip of the pile are minimized by installing a pile joint or a PC nut to prevent the strength of the pile head and the tip from being lowered .

The joint of the pile according to the present invention is formed as follows. First, an excavation hole is formed in the ground, and a pile is inserted and fixed to the excavation hole.

The pile 10 is installed such that its tip is inserted into the excavation hole and the head is exposed to the outside of the excavation hole.

The guide pin 400 is installed in the head connecting portion 100 of the pile 10 installed in the excavation hole and the guide pin 400 is installed at least three or more in all the head connecting portions 100 without installing it.

The guide pin 400 is installed by screwing the threaded portion 410 to the first PC nut portion 110 and connecting the tool to the fitting portion 420 so that the threaded portion 410 is engaged with the first PC nut portion 110).

When the guide pin 400 is installed, another pile 10 to be connected is placed on the head of the pile 10 previously installed.

At this time, the fitting portion 420 of the guide pin 400 installed on the head fitting 100 is installed so as to fit into the second PC nut portion 210 of the front end fitting 200, So that they can be seated as they are positioned.

When the upper and lower piles are properly positioned through the guide pin 400, the tip end connector 200 and the head end connector 100 naturally come into contact with each other, and the bolt tightening holes 231 are positioned to communicate with each other.

The bolt fastening holes 131 formed in the first bolt fastening part 130 of the head end connector 100 are inserted into the bolt fastening holes 131 formed in the second bolt fastening parts 230 of the respective end fasteners 200 By fastening the fastening bolts, jointing of the upper and lower piles is completed.

The pile coupling device of the present invention having such a structure is configured such that the bolt coupling hole 131 of the head coupling 100 and the bolt coupling hole 231 of the tip coupling 200 are inclined, It is possible to insert the fastening bolt 300 in the lower part of the pile and to make a joint with the pile located at the lower part. Thus, the construction can be simplified and the construction time can be shortened.

Since the pile is manufactured by previously embedding the head connecting member 100 and the front end connecting member 200 on the head and the head of the pile 10 during the manufacture of the pile 10, the connecting bolt 300 is formed without a separate joint device installed between the piles. It is possible to easily apply the joint by using only the joint.

Also, it is not necessary to separately form the PC nut and the connector by fixing the PC steel wire 20 to the inside of the pile through the head connector 100 and the end connector 200, thereby reducing the material cost.

The second PC nut part 210 of the front end connector 200 is inserted into the first PC nut part 110 of the lower pile head connector 100 so as to join the pile, And the bottom pile is positioned so that the bolt fastening holes of the head coupling 100 and the front end coupling 200 are communicated with each other so that the fastening bolts 300 can be installed, Fast joint construction can be done.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

(10): pile (20): PC wire
(100): head connector (110): first PC nut part
(120): a first extension part (130): a first bolt fastening part
(131): bolt fastening hole (200): end fastener
(210): a second PC nut part (220): a second extension part
(230): second bolt fastening part (231): bolt fastening hole
(300): fastening bolt (400): guide pin
(410): Screw connection part (420): Fitting part
(500): reinforcing cap (510): horizontal part
(520): Vertical section

Claims (7)

A head connecting portion provided at a predetermined distance along the circumferential direction of the pile at the head portion of the pile, wherein the PC steel wire is connected to one side and the bolt fastening hole is formed on the other side of the pile to downwardly inclined downward toward the center of the pile;
The PC steel wire is fixed to one side of the pile and the other side is connected to the bolt fastening hole at the time of pile joining and is sloped to the side of the front end of the pile. A tip end connector having a bolt fastening hole of a shape;
And a fastening bolt fastened to the bolt fastening hole of the head connecting end through a bolt fastening hole of the inclined tip end fastening hole to connect the tip end connecting end and the head end fastening port. Device.
The method according to claim 1,
The head end connector includes a first PC nut part to which the PC steel wire is connected, a first extension part that is formed to protrude from the side surface of the first PC nut part, and a second extension part that is integrally formed with the first extension part, A first bolt fastening part having a fastening hole formed therein; ≪ / RTI >
Wherein the tip end connector comprises: a second PC nut part to which the PC steel wire is connected; A second extension part protruding from a side surface of the second PCB nut part; And a second bolt fastening part formed integrally with the second extension part and formed in an inclined shape in communication with the bolt fastening hole of the head fastening part and having a bolt fastening hole opened to the side of the front end thereof. Joint of pile using integral nut with nut.
3. The method of claim 2,
Wherein the head end connector is structured such that the first PC nut portion and the bolt fastening hole are located on the same line with respect to the first extending portion and the front end connecting portion is formed such that the second PC nut portion and the bolt fastening hole Of the pile. The pile joint according to any one of claims 1 to 3,
3. The method of claim 2,
Wherein the head end connector is configured such that the first PC nut portion is positioned on one side of the first extending portion and the first PC nut portion is positioned on the other side of the first extending portion, and the first bolt fastening portion and the first PC nut, The parts being configured to be offset from each other,
The second PC nut part is configured to be positioned on the other side of the second extending part, and the second PC nut part is positioned on the other side of the second extending part, so that the second PC nut part is positioned on the other side of the second extending part, And the nut portions are staggered with respect to each other. 3. The method of claim 2,
And a plurality of guide pins installed on the first PC nut portion of the head end connector to be inserted into a second PC nut portion formed on a tip end connecting portion of another pile to be connected, thereby facilitating the connection of the PHC piles. Wherein the punches are connected to each other by means of a bolt.
6. The method of claim 5,
The guide pin is screwed to the first PC nut portion;
A tool clamping surface formed on both sides of the tool clamping surface and formed to be rounded at an upper end thereof so as to be easily rotated through a tool, Wherein the punch comprises a punch having a first end and a second end.
The method according to claim 1,
The pile is installed along the edge of the head and the top of the pile so as to cover the top and side surfaces of the head and the head so as to prevent damage during hitching and to prevent breakage of the joint in response to the bending moment applied to the joint after completion of pile installation Wherein the reinforcing cap further comprises a reinforcing cap to prevent the punching of the pile.


















KR1020130050463A 2013-05-06 2013-05-06 Coupling apparatus of pile using coupler integrated pc nut KR20140131648A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105887877A (en) * 2014-12-25 2016-08-24 宿迁力引实业有限公司 X-shaped pin connector for prestressed concrete pipe piles
KR20190053813A (en) 2018-12-28 2019-05-20 정순용 Concrete pile connected by a molten filler and Connecting method of the same
KR20190053501A (en) 2017-11-10 2019-05-20 정순용 Concrete pile connected by a molten filler and Connecting method of the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105887877A (en) * 2014-12-25 2016-08-24 宿迁力引实业有限公司 X-shaped pin connector for prestressed concrete pipe piles
KR20190053501A (en) 2017-11-10 2019-05-20 정순용 Concrete pile connected by a molten filler and Connecting method of the same
KR20190053813A (en) 2018-12-28 2019-05-20 정순용 Concrete pile connected by a molten filler and Connecting method of the same

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