KR101683849B1 - Anti-slip type strong connecting nut toward earthquake and vibration for phc pile and construction method using that for upper end of phc pile - Google Patents

Abstract

The present invention relates to an anti-slip connecting nut robust to earthquake and vibration for a PHC pile. The anti-slip connecting nut comprises: a polygonal portion allowing a steel wire of a PHC file to be held thereon, and inserted into an upper end of the PHC file; a pipe expanding portion formed to have a greater diameter than that of the polygonal portion, and having a second thread coupled to a first thread of a steel material in a bolt manner; a short edge portion connecting the polygonal portion to the pipe expanding portion; a connecting portion provided on the steel wire and the polygonal portion such that the steel wire is held on the connecting portion; and an anti-slip portion provided on the polygonal portion, the pipe expanding portion, or the short edge portion to prevent the anti-slip connecting nut from slipping against the PHC pile.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an anti-seismic and anti-vibration type PHC file connecting nut,

The present invention relates to a slip prevention type PHC file connecting nut resistant to vibration and vibration and a method of assembling and assembling a head using the same. More particularly, Which is resistant to vibration and seismic vibration, and which can prevent malfunctions that can not be prevented from occurring.

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In addition, steel pipe files can be withdrawn and reused, but many of them are sold as scrap iron because of the increased number of cut parts due to on-site conditions, which makes it possible to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 reinforcing structure of the pile according to the prior art has to break the top of the head to expose the steel wire from the head of the PHC pile, it is difficult to connect the steel wire of the PHC pile with the pseudo steel, 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.

In order to simplify the connection structure of the nut member, a nut member may be provided at an end portion of the file. The nut member including the metal material and the file containing the concrete material are fixed to each other The nut member is slid inside the groove of the pile, and the nut member is rotated. In this case, the nut member is slid inside the groove of the pile and the nut member is rotated There is a problem that the coupling between the steel material and the nut member is not performed.

In addition, since the file according to the prior art is classified as a bad file and discarded when a malfunction that causes the nut member to slip occurs as described above, the expensive file can not be used due to the slip phenomenon of the nut member, It is difficult to reduce the defective rate of the required file, and it is difficult to reduce the time and cost required for file construction.

Therefore, there is a need for improvement.

The present invention relates to an anti-seismic and vibration-resistant anti-slip type PHC file connection nut which can prevent a malfunction in which a connection nut is slipped from a PHC pile when a steel material is fastened to a coupling nut and is not connected to a steel material. The present invention has been made in view of the above problems.

The present invention relates to a polygonal part in which a steel wire of a PHC file is engaged and inserted into the head of a PHC file; And a second screw thread formed to have a larger diameter as compared with the polygonal part and having a first screw thread of a steel material bolted thereto; A step portion connecting the polygonal portion and the expanding portion; A connecting portion provided on the steel wire and the polygonal portion so that the steel wire is engaged; And a slip prevention part provided on the polygonal part, the expansion part, or the step part to prevent slippage with the PHC file.

In addition, the connecting portion of the present invention may include: a latch protrusion formed to protrude from the steel wire and inserted into the polygonal portion; And an engagement step protruded from the polygonal part to prevent the engagement projection from separating from the connection nut through the polygonal part.

In addition, the slip prevention portion of the present invention is characterized by including a latching groove portion formed along the polygonal portion, the expanded portion, or the step portion.

Further, the present invention provides a method of manufacturing a PHC pile comprising: a steel wire installed in a PHC file and extending to a head portion; A connecting nut in which the steel wire is engaged and installed at a head portion of a PHC file; A steel bolted to the connecting nut and extending from the head of the PHC pile; A connection reinforcing plate installed at an end of the steel material so as to be inserted into a concrete structure constructed to surround the head of the steel material; And a slip prevention part for preventing the connection nut from rotating when the steel material is fastened to the connection nut.

The slip prevention type PHC file connection nut resistant to vibration and vibration according to the present invention and the head cleaning construction method using the same are provided with the slip prevention part for improving the frictional force between the PHC file and the connection nut, It is possible to prevent the nut from slipping and idling, to easily engage the steel material, and to reduce the defect rate of the PHC file.

In addition, the sleeping prevention type PHC file connecting nut and the head cleaning method using the same, which are resistant to vibration and vibration, according to the present invention are provided with a connecting nut fixedly installed at the time of producing the PHC file and connected to the steel wire, It is possible to connect the steel material without the coupling member or the nut member which is required to further connect the steel wire with the steel material, thereby reducing the time and cost involved in connecting the steel material for reinforcement of the pile head. .

The slip-resistant type PHC file connecting nut resistant to vibration and vibration according to the present invention and the method of cleaning the head using the same have a structure in which the lower part of the connecting nut is made of a polygonal section having a polygonal sectional shape, So that it is possible to easily join the steel wire and the steel wire having different diameters to each other and to effectively prevent the connection nut from slipping.

1 is a perspective view showing a mounting structure of an anti-slip type PHC file connecting nut resistant to vibration and vibration according to an embodiment of the present invention.
2 is a cross-sectional view showing a connection device for a PHC file having an anti-vibration and vibration resistant anti-slip type PHC file connection nut according to an embodiment of the present invention.
3 is a perspective view showing an anti-seismic and vibration resistant anti-slip type PHC file connection nut according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a slip prevention type PHC file connecting nut resistant to vibration and vibration and a method of cleaning a head using the same 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 a perspective view showing a mounting structure of a slip-proof type PHC file connecting nut which is resistant to vibration and vibration according to an embodiment of the present invention, FIG. 2 is a perspective view showing a slip- FIG. 3 is a perspective view showing an anti-seismic and vibration resistant anti-slip type PHC file connection nut according to an embodiment of the present invention, and FIG. 3 is a perspective view showing a PHC file connection nut having a PHC file connection nut.

Referring to FIGS. 1 to 3, a connection device for a PHC file having an anti-vibration and vibration-resistant anti-slip type PHC file connection nut according to an embodiment of the present invention is provided in the PHC file 10, A connecting nut 50 which is engaged with the steel wire 12 and is installed on the head of the PHC pile 10 and a connecting nut 50 which is bolted to the connecting nut 50 and extends from the head of the PHC pile 10 A connection reinforcing plate 34 installed at an end of the steel material 30 so as to be inserted into a concrete structure constructed to surround the head of the steel material 30 and a connecting nut 50, And a slip prevention part (80) for preventing the connection nut (50) from rotating when fastening the connection nut (50).

When the PHC file 10 is manufactured, the concrete mortar is arranged in a ring shape by the centrifugal force so that the interior of the PHC file 10 becomes hollow. At this time, a plurality of steel wires 12 are arranged and impregnated in the longitudinal direction of the pile, And the connecting nut 50 is engaged with the end of the steel wire 12, respectively.

Since the connection nut 50 inserted into the head of the PHC file 10 is made of a metal material, the PHC pile 10 including the concrete material is liable to slip. The slip preventing portion 80 is provided on the outer circumferential surface to prevent the connecting nut 50 from slipping when the steel 30 is fastened to the connecting nut 50. [

The connecting nut 50 according to the present embodiment has a polygonal section 54 in which the steel wire 12 of the PHC file 10 is engaged and inserted into the head of the PHC pile 10, An expanded portion 56 formed with a large diameter and formed with a second thread 52a for bolt-coupling the first thread 32 of the steel 30, A connection portion 70 provided on the steel wire 12 and the polygonal portion 54 so as to engage the steel wire 12 with the step portion 58 to be connected to the PHC pile 10, And the slip prevention part 80 provided in the expansion part 56 or the step part 58. [

Since the steel wire 12 provided inside the PHC 10 is formed to have a smaller diameter than the steel 30, the polygonal part 54 of the connecting nut 50 to which the steel wire 12 is connected, And is smaller in diameter than the expanded portion 56 connected thereto.

Therefore, it is possible to reduce the material cost required for manufacturing the connecting nut 50 at the portion connecting the relatively small diameter steel wire 12, and the cross-sectional shape of the polygonal portion 54 is formed into a polygonal shape, 30 can be more effectively prevented from slipping and rotating when the coupling nut 50 is fastened.

The expanded portion 56 has a relatively large diameter so that the steel 30 having a diameter larger than that of the steel wire 12 can be easily engaged and a second thread 52a is formed on the inner wall of the expanded portion 56 So as to be bolted to the first screw thread 32 formed on the steel material 30.

A stepped portion 58 forming an inclined surface is formed between the corner portion 54 and the expanded portion 56 so that the thickness of the inner wall of the connecting nut 50 is constant or substantially the same.

The connecting portion 70 includes a latching protrusion 72 protruding from the steel wire 12 and inserted into the polygonal portion 54 and a latching protrusion 72 extending from the connecting nut 50 through the polygonal portion 54. [ And an engagement step 74 protruding from the polygonal part 54 to prevent separation.

The engaging stepped portion 74 is formed on the inner wall of the corner portion 54 to protrude toward the central portion of the connecting hole portion 52 formed at the center of the connecting hole portion to narrow the diameter of the connecting hole portion 52, The engaging protrusion 72 is formed at the end of the steel wire 12 so as to be engaged with the engaging step 74. Therefore, when the wire is inserted from the lower end of the steel wire 12 through the expanded portion 56, The engaging protrusion 72 is engaged with the engaging stepped portion 74 so that the connecting nut 50 and the steel wire 12 are engaged.

As described above, when the PHC file 10 is manufactured by providing the centrifugal force after the concrete mortar is injected after being installed in the mold for manufacturing the PHC file 10 by engaging the steel wire 12 and the connecting nut 50, A plurality of steel wires 12 are arranged at regular intervals and a connecting nut 50 is installed on the top of the pile so that the connection hole 52 is exposed.

When the PHC pile 10 is manufactured, a concrete mortar formed by a centrifugal force in the form of a ring is engaged with the slip prevention part 80 to form a latching structure that can prevent the connection nut 50 from slipping.

The slip prevention portion 80 includes the plurality of engagement groove portions 82 formed along the polygonal portion 54, the expansion portion 56 or the step portion 58. Therefore, when the PHC file 10 is manufactured, Since the concrete mortar formed in a ring shape is inserted and hardened in the engaging groove portion 82, the engaging groove portion 82 and the protruding portions protruding from the groove portion formed in the PHC pile 10 are alternately arranged, Lt; / RTI >

The protrusions protruding from the groove portion of the PHC 10 are inserted into the plurality of engaging groove portions 82 to prevent the connecting nut 50 from rotating due to the rotational force generated when the steel material 30 is fastened, 50 can be prevented from slipping.

Further, since the steel pipe member 14 including the metal material is provided on the outer wall of the head portion of the PHC file 10, the connection strength can be improved when the connection between the PHC files 10 is performed.

A method of cleaning the head using the anti-seismic and vibration-resistant anti-slip type PHC file connecting nut according to an embodiment of the present invention will be described below.

The head cleaning method using the anti-slip type PHC file connecting nut resistant to seismic and vibration according to an embodiment of the present invention is formed on the head of the PHC pile 10 installed in the ground and installed so that the head is exposed to the ground Cutting the end portion of the PHC pile 10 so as to adjust the height of the upper surface of the PHC pile 10; molding the perforation hole portion 16 around the steel wire 12 exposed on the upper surface of the PHC pile 10; Tightening the connecting nut 50 to the connecting nut 50, and fastening and connecting the steel material 30 to the connecting nut 50.

After the PHC file 10 is installed on the ground and the head is exposed to the ground, the head is cut using a cutting tool to adjust the height of the head, and the head is cut on the top surface of the PHC pile 10 After forming the perforation hole portion by using an equipment such as a core drill, the connecting nut 50 is fastened and the steel material 30 is fastened to the connecting nut 50.

The head cleaning method as described above can clean the head by connecting the steel material 30 to the connecting nut 50 provided at the upper end of the PHC pile 10 to be shaken without cutting the PHC pile 10 , And the head cleaning method without cutting the head is as follows.

First, when the PHC file 10 is installed on the ground and the head is exposed to the ground, the first thread 32 formed at the lower end of the steel 30 is inserted into the connection nut 50 and rotated, The steel 30 is connected to the connecting nut 50 while the second thread 32a and the second thread 52a are bolted to each other so that the steel 30 is installed on the head of the PHC pile 10 in the vertical direction.

A connection reinforcing plate 34 formed in a panel shape is provided at the upper end of the steel material 30. The connecting reinforcing plate 34 is connected to the steel material 30 after the nut member 36 is joined to the thread formed at the upper end of the steel material 30 30, and the other nut member 36 is engaged with the upper end of the steel material 30, so that the connection reinforcing plate 34 is installed.

After repeating the above operation, the steel member 30 is connected to each steel wire 12, the connection reinforcing plate 34 is installed on the upper end of the steel material 30, The tensile force and the exertion force of the PHC pile 10 deeply embedded in the ground are transmitted through the steel wire 12 and the steel material 30 to the concrete So that the bearing capacity of the concrete structure is improved.

As a result, it is possible to prevent a malfunction in which the connecting nut is slipped from the PHC pile when the steel material is fastened to the connecting nut and the steel material is not connected, and the slip prevention type PHC file connecting nut resistant to vibration and vibration is used. .

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 slip prevention type PHC file connecting nut resistant to vibration and vibration and the head cleaning construction method using the same are described as an example, the slip prevention type PHC file connection nut resistant to earthquake and vibration, The connecting nut of the present invention and the construction method using the connecting nut may be used for products other than the construction method.

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

10: PHC file 12: Steel wire
14: steel pipe member 30: steel member
32: first thread 34: connection reinforcing plate
36: nut member 50: connecting nut
52: connection hole part 52a: second thread
54: multi-part 56:
58: step portion 70: connecting portion
72: engaging projection 74: engaging step
80: slip prevention part 82:

Claims (5)

The corners of the PHC file are interlocked and inserted into the head of the PHC file;
And a second screw thread formed to have a larger diameter as compared with the polygonal part and having a first screw thread of a steel material bolted thereto;
A step portion connecting the polygonal portion and the expanding portion;
A connecting portion provided on the steel wire and the polygonal portion so that the steel wire is engaged; And
And a slip prevention part provided on the polygonal part, the expansion part, or the step part to prevent slippage with the PHC file,
Wherein the slip prevention portion includes a latching groove portion formed along the polygonal portion, the expansion portion, or the step portion,
The latching groove portion is extended from the end of the polygonal portion to the extending portion through the step portion so that one projecting portion protruding from the PHC file is engaged with the polygonal portion, the step portion and the expanded portion at the same time Which is resistant to vibration and vibration.
The connector according to claim 1,
A latch protrusion formed to protrude from the steel wire and inserted into the polygonal portion; And
And an engagement step protruded from the polygonal part to prevent the engagement projection from separating from the connection nut via the polygonal part.
delete A steel wire installed in the PHC file and extending to the head;
A connecting nut in which the steel wire is engaged and installed at a head portion of a PHC file;
A steel bolted to the connecting nut and extending from the head of the PHC pile;
A connection reinforcing plate installed at an end of the steel material so as to be inserted into a concrete structure constructed to surround the head of the steel material; And
And a slip prevention part for preventing the connection nut from rotating when the steel material is fastened to the connection nut,
The connecting nut
Wherein the steel wire is engaged and inserted into the head of the PHC file;
And a second screw thread formed to have a larger diameter as compared with the polygonal part and having a first screw thread of a steel material bolted thereto;
A step portion connecting the polygonal portion and the expanding portion;
A connecting portion provided on the steel wire and the polygonal portion so that the steel wire is engaged; And
And a slip prevention part provided on the polygonal part, the expansion part, or the step part to prevent slippage with the PHC file,
Wherein the slip prevention portion includes a latching groove portion formed along the polygonal portion, the expansion portion, or the step portion,
The latching groove portion is extended from the end of the polygonal portion to the extending portion through the step portion so that one projecting portion protruding from the PHC file is engaged with the polygonal portion, the step portion and the expanded portion at the same time Which is resistant to vibration and vibration.
(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) forming a perforation hole portion around a steel wire exposed on an upper surface of the PHC pile;
(c) fastening the connecting nut to the end of the steel wire;
(d) tightening and connecting the steel to the connecting nut,
The connecting nut
Wherein the steel wire is engaged and inserted into the head of the PHC file;
And a second screw thread formed to have a larger diameter as compared with the polygonal part and having a first screw thread of a steel material bolted thereto;
A step portion connecting the polygonal portion and the expanding portion;
A connecting portion provided on the steel wire and the polygonal portion so that the steel wire is engaged; And
And a slip prevention part provided on the polygonal part, the expansion part, or the step part to prevent slippage with the PHC file,
Wherein the slip prevention portion includes a latching groove portion formed along the polygonal portion, the expansion portion, or the step portion,
The latching groove portion is extended from the end of the polygonal portion to the extending portion through the step portion so that one projecting portion protruding from the PHC file is engaged with the polygonal portion, the step portion and the expanded portion at the same time Which is resistant to vibration and vibration, is made by using a PHC file connection nut.

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