KR20210128169A - Joining device of file - Google Patents

Abstract

According to the present invention, a pile coupling device couples an upper pile and a lower pile to each other and comprises: an upper coupling unit including a plurality of upper parts radially arranged on the lower end of the upper pile, fixed and coupled to be circumferentially separated at regular intervals, and provided with a bolting hole formed through the center thereof and a first key groove of a semicircular column shape dented on both sides thereof, and an internal reinforcing ring of a ring shape fixed and coupled to the inner surface of the plurality of upper parts arranged in the radial direction; a lower coupling unit including a plurality of lower parts radially arranged on the upper end of the lower pile, fixed and coupled to be circumferentially separated at regular intervals, and provided with a bolting hole formed through the center thereof and a second key groove of a semicircular column shape dented on both sides thereof to be inserted between the upper parts when the upper pile and the lower pile are coupled, and an external reinforcing ring of a ring shape fixed and coupled to the outer surface of the plurality of lower parts arranged in the radial direction; and a coupling key of a cylindrical shape inserted into and coupled to a key groove of a cylindrical shape formed by coupling the first key groove and the second key groove to maintain a state in which the upper coupling unit and the second coupling unit are coupled to each other. The upper pile and the lower pile are firmly coupled to each other to use a pile of which the length is extended by coupling the upper pile and the lower pile to stably construct a structure. The upper pile and the lower pile can be quickly and easily coupled to each other.

Description

FILE JOINING DEVICE OF FILE}

The present invention relates to a pile coupling device, and more particularly, to a pile coupling device for stably extending the length of a pile by mutually coupling an upper pile and a lower pile.

In general, in order to install a predetermined superstructure on the upper part of the ground, the ground must have sufficient bearing capacity for the load of the superstructure. The ground for which sufficient bearing capacity is not secured in response to the ground conditions or load conditions of superstructures is called soft ground.

In the case of soft ground, measures against the stability and settlement of the superstructure must be prepared before the installation of the superstructure, and among these precautionary measures, it is the most commonly used method. There is a pile construction method, which is a pre-construction method.

This pile construction method refers to a method of constructing a pre-made concrete pile produced in a factory by striking it with a diesel hammer or hydraulic hammer, or drilling the ground and then embedding it.

When carrying out the pile construction method, piles to be used are selected in consideration of the load conditions applied to the structure, seismic design, and other impact stresses. According to the law, the compressive strength of concrete manufactured by applying centrifugal force is defined as high-strength concrete piles (hereinafter referred to as “concrete piles”) by a pretension method with a compressive strength of 78.5N/mm2 (800kgf/cm2) or more.

In addition, the length of concrete piles is stipulated to be 5~15m due to restrictions on manufacturing and transportation, but it is not uncommon for concrete piles to be constructed to a depth of 16m or more depending on the ground conditions of the actual construction site.

In this way, when the construction length is 16m or more, two or more concrete piles are connected and constructed. As shown in FIG. 2) is a method of producing piles by attaching iron plates 3 and 4 with weld grooves 5 to the ends, respectively, and welding the upper and lower piles together in the field.

However, such a welded joint method is easily affected by the weather, requires inspection of the welded part, and has many problems such as the risk of safety accidents.

Therefore, a method for solving such problems is required.

1. Republic of Korea Patent No. 10-1535863 "Up-and-down fastening type pile joint device and pile construction method using the same" 2. Republic of Korea Patent Application No. 10-2015-0034200 "Concrete pile connection device and method"

The present invention has been derived to solve the above problems, and by making the upper pile and the lower pile firmly coupled to each other, the construction of the structure can be stably performed using the pile with the length extended by the combination of the upper pile and the lower pile. An object of the present invention is to provide a pile coupling device that allows the upper pile and the lower pile to be coupled to each other quickly and easily.

In order to solve the above problems, the present invention is provided at the upper end of the upper pile disposed on the upper side and the lower end and the lower file disposed on the lower side to interconnect the upper pile and the lower pile, respectively, as a file combining device that is coupled to each other. , A plurality of upper pieces arranged in a radial direction at the lower end of the upper pile and fixedly coupled to be spaced apart from each other at regular intervals along the circumferential direction, a bolting hole is formed in the center, and a first key groove in the shape of a semi-cylindrical hole is formed on both sides thereof; an upper coupling part comprising an inner reinforcing ring having a ring shape fixedly coupled to the inner surfaces of the plurality of upper pieces disposed in a radial direction; It is arranged along the radial direction on the upper end of the lower pile and is fixedly coupled to be spaced apart from each other at regular intervals along the circumferential direction, a bolting hole is formed through the center, and a semi-cylindrical second key groove is formed on both sides of the lower pile, so that the upper pile and the lower pile are formed. A plurality of lower pieces inserted between the upper piece and the upper piece at the time of this coupling, and a ring-shaped external reinforcement ring fixedly coupled to the outer surfaces of the plurality of lower pieces arranged along the radial direction and having a key insertion hole through it a lower coupling part; a cylinder-shaped coupling key that is inserted and fastened into a cylindrical keyway formed by the coupling of the first keyway and the second keyway to maintain a state in which the upper coupling part and the lower coupling part are coupled to each other; It presents a file combining device, characterized in that it includes.

Here, the length of the fixing surface of the upper part fixedly coupled to the inner reinforcing ring is formed relatively shorter than the length of the opposite surface facing the fixing surface so that the cross-section thereof is formed in a trapezoidal shape as a whole, and fixedly coupled to the outer reinforcing ring The length of the fixing surface of the lower part may be formed to be relatively longer than the length of the opposite surface facing the fixing surface, so that the cross-section thereof may be formed in a trapezoidal shape as a whole.

And, the outer diameter of the outer reinforcing ring may be formed larger than the outer diameter of the upper pile and the lower pile.

In addition, the width of the upper part and the lower part, which is a separation distance between the outer reinforcing ring and the inner reinforcing ring, may be formed to be larger than the thickness of the upper pile and the lower pile.

In addition, the longitudinal cross-section of the inner reinforcing ring may be formed to be inclined so that the width gradually increases toward the upper side.

And, the longitudinal cross-section of the outer reinforcing ring may be formed to be inclined so that the width gradually increases toward the lower side.

In addition, the periphery of the bolting hole respectively formed on the upper and lower pieces to prevent the heads of the bolts fastened to the bolting balls from being accommodated and protruding may be recessed to a predetermined depth from the surfaces of the upper and lower pieces.

The pile coupling device according to the present invention allows the upper pile and the lower pile to be firmly coupled to each other, thereby stably constructing a structure using a pile whose length is extended by the combination of the upper pile and the lower pile, and the upper pile and the upper pile There is an effect that the lower piles can be quickly and easily combined with each other.

1 is a longitudinal sectional view showing a state in which an upper pile and a lower pile are connected by a conventional welding method;
2 is a perspective view showing a separated state in which the pile coupling device according to the present invention is fixed to the upper pile and the lower pile, respectively;
3 is a cutaway view showing the structure of a longitudinal section in a state in which the file coupling device according to the present invention is separated;
4 is a perspective view showing a structure in which the pile coupling device according to the present invention is coupled to each other;
5 is a cutaway view showing the structure of a longitudinal section in a state in which the pile coupling device according to the present invention is coupled to each other;
Figure 6 is a perspective view showing the structure of the upper part of the pile coupling device of Figure 3,
7 is a perspective view illustrating a structure of a lower part of the pile coupling device of FIG. 3 .

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

2 is a perspective view showing a separated state in which the pile coupling device according to the present invention is fixed to the upper pile and the lower pile, respectively, and FIG. 4 is a perspective view showing a structure in which the pile coupling device according to the present invention is coupled to each other, and FIG. 5 is a cutaway view showing the structure of a longitudinal section in which the pile coupling device according to the present invention is coupled to each other , FIG. 6 is a perspective view showing the structure of the upper part of the pile coupling device of FIG. 3, and FIG. 7 is a perspective view showing the structure of the lower part of the pile coupling device of FIG.

As shown in these drawings, the pile coupling device according to the present invention is disposed on the upper side and the lower side with the upper pile (1a) disposed on the upper side in order to interconnect the upper pile (1a) and the lower pile (1b) As a pile coupling device provided at the upper end of the lower pile (1b) and coupled to each other, it is disposed along the radial direction at the lower end of the upper pile (1a) and is fixedly coupled at regular intervals along the circumferential direction, and a ball in the center A ring shape that is fixedly coupled to a plurality of upper pieces 110 through which a ting hole 111 is formed and a first key groove 112 in a semi-cylindrical shape is formed on both sides thereof, and the inner surfaces of the plurality of upper pieces arranged in a radial direction. an upper coupling portion 100 made of an inner reinforcing ring 120 of; It is disposed along the radial direction on the upper end of the lower pile (1b) and is fixedly coupled to be spaced apart from each other at regular intervals along the circumferential direction, a bolting hole 211 is formed through the center, and a semi-cylindrical second key groove 212 is formed on both sides. A plurality of lower pieces 210 that are inserted between the upper piece 110 and the upper piece 110 when the upper pile 1a and the lower pile 1b are coupled to each other, along the radial direction. a lower coupling part 200 fixedly coupled to the outer surface of the plurality of the lower pieces 210 and comprising a ring-shaped external reinforcing ring 220 through which a key insertion hole 221 is formed; The first keyway 112 and the second keyway 212 are inserted and fastened into a cylindrical keyway formed by the coupling to maintain the state in which the upper coupling part 100 and the lower coupling part 200 are coupled to each other. A combination key 300 of a cylindrical shape to make; characterized by including.

The pile coupling device according to the present invention is structurally stable when interconnecting the upper pile (1a) and the lower pile (1b) disposed adjacent to each other in the vertical direction, prevents the adsorption of foreign substances to the connection part, and is interconnected even in external impact It is a device to keep the state firmly.

The upper pile (1a) and the lower pile (1b) are column members having a ring-shaped cross section in which a hollow is formed along the longitudinal direction in the center, and is generally formed of a concrete material.

In order to combine the upper pile (1a) and the lower pile (1b), the upper coupling part 100 is fixed to the lower surface of the upper pile 1a, and the lower coupling part 200 is fixed to the upper surface of the lower pile 1b. In a state in which the upper pile (1a) is seated on the upper surface of the lower pile (1b), the upper coupling part 100 and the lower coupling part 200 are coupled.

As described above, the upper coupling part 100 is disposed along the radial direction at the lower end of the upper pile 1a and is fixedly coupled to be spaced apart from each other at regular intervals along the circumferential direction, and the bolting hole 111 is formed through the center. A plurality of upper pieces 110 having first key grooves 112 having semi-cylindrical shapes on both sides, and a ring-shaped inner reinforcing ring 120 fixedly coupled to the inner surfaces of the plurality of upper pieces disposed in the radial direction. is done

The upper piece 110 is formed in a length of the upper piece 110 fixed surface fixedly coupled to the inner reinforcing ring 120 is relatively shorter than the length of the opposite surface facing the fixed surface, so that the cross section thereof is formed in a trapezoidal shape as a whole. is absent

A bolting hole 111 is formed through the central region of the upper piece 110 so that a bolt is penetrated to fix the upper piece 110 to the lower surface of the upper pile 1a. It is preferable that the periphery 111a of the bolting ball 111 is recessed to a certain depth from the surface of the upper piece 110 so as to prevent the head of the bolt 2 fastened to the silver bolting hole 111 from being received and protruded. .

The peripheral portion 111a of the bolting hole 111 is recessed to a certain depth so that the bolt 2 head is accommodated, thereby suppressing the concentration of the load, thereby preventing damage to the outer surface of the upper pile 1a.

In addition, a semi-cylindrical first key groove 112 is recessed on both sides of the upper piece 110, and the first key groove 112 is combined with a second key groove 212 to be described later to form a cylindrical key groove. The coupling key 300 is inserted into the keyway so that the upper piece 110 and the lower piece 210 are coupled to each other.

The inner reinforcing ring 120 is a ring-shaped member fixedly coupled to the inner surface of the plurality of upper pieces 210 disposed in the radial direction, the height of which is formed at the same height as the upper piece 110, and the upper piece 110 ) is preferably coupled to be disposed on the same line as the inner reinforcing ring (120).

The inner reinforcing ring 120 is an upper piece 110 and a lower portion due to foreign matter penetrating into the coupling site of the upper piece 110 and the lower piece 220 from the inside of the upper pile 1a and the lower pile 1b or an external impact. It serves to prevent the piece 220 from being damaged.

And, the longitudinal cross-section of the inner reinforcing ring 120 is preferably formed to be inclined so that the width gradually increases toward the upper side.

This moves the upper coupling part 100 provided with the inner reinforcing ring 120 to be coupled to each other in the upper part of the lower coupling part 200, so that the upper coupling part 100 and the lower coupling part 200 come into contact with each other after the initial contact. Insertion is made easily and additionally, when the upper coupling part 100 moves downward, the outer surface of the inclined inner reinforcing ring 120 presses the opposite surface of the lower piece 220 to forcefully engage, thereby increasing the fastening force.

As described above, the lower coupling part 200 is disposed along the radial direction on the upper end of the lower pile 1b and is fixedly coupled to be spaced apart from each other at regular intervals along the circumferential direction, and the bolting hole 211 is formed through the center. A plurality of second key grooves 212 having a semi-cylindrical shape are formed on both side surfaces, and are inserted between the upper piece 110 and the upper piece 110 when the upper pile 1a and the lower pile 1b are coupled. of the lower piece 210 and a ring-shaped outer reinforcing ring 220 fixedly coupled to the outer surface of the plurality of lower pieces 210 disposed in the radial direction.

The lower piece 210 has a length of the lower piece 210 fixed surface fixedly coupled to the outer reinforcing ring 220 is formed to be relatively longer than the length of the opposite surface facing the fixed surface, so that the cross section thereof is formed in a trapezoidal shape as a whole. is absent

In the central region of the lower piece 210, a bolt is penetrated and a bolting hole 211 for fixing the lower piece 210 to the upper surface of the upper pile 1a is formed therethrough. It is preferable that the periphery 211a of the bolting hole 211 is recessed to a certain depth from the surface of the lower piece 210 so as to prevent the head of the bolt 2 fastened to the silver bolting hole 211 from being received and protruded. .

The peripheral portion 211a of the bolting hole 211 is recessed to a certain depth so that the bolt 2 head is accommodated, thereby suppressing the concentration of the load, thereby preventing damage to the outer surface of the lower pile 1b.

In addition, a semi-cylindrical second keyway 212 is recessed on both sides of the lower piece 210, and the second keyway 212 is coupled with the above-described first keyway 112 to form a cylindrical keyway. The coupling key 300 is inserted into the keyway so that the lower piece 210 and the upper piece 110 are coupled to each other.

The outer reinforcing ring 220 is a ring-shaped member fixedly coupled to the outer surface of the plurality of lower pieces 210 disposed in the radial direction, the height of which is formed at the same height as the lower piece 210, and the lower piece 210 ) is preferably coupled to be disposed on the same line as the outer reinforcing ring 220.

The external reinforcing ring 220 is the upper part 110 and the lower part due to the penetration of foreign substances into the coupling site of the upper part 110 and the lower part 220 from the outside of the upper pile 1a and the lower pile 1b or an external impact. It serves to prevent the piece 220 from being damaged, and a key insertion hole 221, which is an inlet into which the coupling key 300 is inserted, is formed through the plate surface.

The outer diameter of the outer reinforcing ring 220 is formed to be larger than the outer diameter of the upper pile (1a) and the lower pile (1b), so that the outer reinforcing ring 220 is formed along the radial direction of the upper pile (1a) and the lower pile (1b). It is effective to ensure that the upper pile (1a) and the lower pile (1b) can be stably coupled by protruding at a predetermined interval to the outside.

In addition, it is preferable that the longitudinal cross-section of the outer reinforcing ring 220 is inclined so that the width gradually increases toward the lower side.

This moves the lower coupling part 200 provided with the external reinforcing ring 220 up and down to mutually couple the upper coupling part 100 in the lower part of the upper coupling part 100 and the lower coupling part 200 after the initial contact. The insertion is made easy and the outer surface of the outer reinforcing ring 220 that is inclined when the lower coupling part 200 is moved up and down presses the opposite surface of the upper piece 110 to forcefully engage, thereby increasing the fastening force.

In addition, the width of the upper piece 110 and the lower piece 210, which is the separation distance between the outer reinforcing ring 220 and the inner reinforcing ring 120, is greater than the thickness of the upper pile 1a and the lower pile 1b. As a result, as described above, the outer reinforcing ring 220 protrudes a certain length to the outside of the upper pile 1a and the lower pile 1b along the radial direction, and the inner reinforcing ring 120 is also upper along the radial direction. It is preferable to protrude a predetermined length to the inside of the pile (1a) and the lower pile (1b).

The coupling key 300 is inserted and fastened into a cylindrical keyway formed by the coupling of the first keyway 112 and the second keyway 212, so that the upper coupling part 100 and the lower coupling part 200 are coupled to each other. It is a cylindrical member that holds the

The coupling key 300 is inserted into a cylindrical keyway formed by the coupling of the first keyway 112 and the second keyway 212 so that the upper coupling part 100 and the lower coupling part 200 are coupled to each other. Because of the structure, it is possible to reliably prevent the coupling key 300 from being separated from the key groove, and the first key groove 112 and the second key groove 212 are in contact with each other along the longitudinal direction of the coupling key 300 . Since it is a structure, there is a remarkable effect that can improve the flexural rigidity of the coupling key 300 against external force.

The process of construction after coupling the upper pile and the lower pile using the pile coupling device according to the present invention having the above-described configuration will be described with reference to FIG. 2 as follows.

First, after inserting the bolt into the bolt hole 111 after making the upper surface of the upper piece 110 of the upper coupling part 100 of the pile coupling device in contact with the lower surface of the upper pile 1a, using a separate tool The bolt is fastened to the fastening hole formed in the upper pile 1a, so that the upper coupling part 100 is fixedly coupled to the lower surface of the upper pile 1a.

When the coupling of the upper pile (1a) and the upper coupling part 100 is completed, the lower part 210 of the lower coupling part 200 is seated so that the lower surface of the lower coupling part 200 is in contact with the upper surface of the lower pile 2 After this, the bolt is inserted into the bolt hole 211 and the bolt is fastened to the fastening hole formed in the lower pile 1b using a separate tool, so that the lower coupling part 200 is fixedly coupled to the lower pile 1b. make it possible

After that, by lifting the upper file (1a), the upper piece 110 is arranged to be inserted into the space between the lower piece 210 and the lower piece 210, and is seated on the upper surface of the lower file 1b to form a key groove. And, the coupling of the upper pile (1a) and the lower pile (1b) is completed by inserting and fastening the coupling key 300 into the keyway.

As described above, in the pile coupling device according to the present invention, the construction of the structure is stably performed using a pile having a length extended by the coupling of the upper pile and the lower pile by allowing the upper pile and the lower pile to be firmly coupled to each other. and the upper and lower piles can be quickly and easily combined with each other.

Since the above has only been described with respect to some of the preferred embodiments that can be implemented by the present invention, the scope of the present invention, as noted, should not be construed as being limited to the above embodiments, and It will be said that the technical idea and the technical idea with the root are all included in the scope of the present invention.

1a: upper file 1b: lower file
100: upper coupling part 110: upper part
111: bolt hole 112: first keyway
120: inner reinforcing ring 200: lower coupling part
210: lower part 211: bolt hole
212: second keyway 220: external reinforcement ring
300: combination key

Claims (7)

In order to interconnect the upper pile (1a) and the lower pile (1b), the upper pile (1a) disposed on the upper side and the lower pile (1b) disposed on the lower side and the lower pile (1b) are respectively provided at the top of the pile to be coupled to each other. As a device,
It is disposed along the radial direction at the lower end of the upper pile (1a) and is fixedly coupled to be spaced apart from each other at regular intervals along the circumferential direction, the bolting hole 111 is formed through the center, and the first key groove 112 in a semi-cylindrical shape is formed on both sides. An upper coupling part 100 comprising a plurality of upper pieces 110 having a hole formed therein, and an inner reinforcing ring 120 having a ring shape fixedly coupled to the inner surfaces of the plurality of upper pieces disposed in a radial direction;
It is disposed along the radial direction on the upper end of the lower pile (1b) and is fixedly coupled to be spaced apart from each other at regular intervals along the circumferential direction, a bolting hole 211 is formed through the center, and a semi-cylindrical second key groove 212 is formed on both sides. A plurality of lower pieces 210 that are inserted between the upper piece 110 and the upper piece 110 when the upper pile 1a and the lower pile 1b are coupled to each other, along the radial direction. a lower coupling part 200 fixedly coupled to the outer surface of the plurality of the lower pieces 210 and comprising a ring-shaped external reinforcing ring 220 through which a key insertion hole 221 is formed;
The first keyway 112 and the second keyway 212 are inserted and fastened into a cylindrical keyway formed by the coupling to maintain the state in which the upper coupling part 100 and the lower coupling part 200 are coupled to each other. A combination key 300 of a cylindrical shape to make;
File combining device, characterized in that it contains. According to claim 1,
The length of the fixing surface of the upper piece 110 fixedly coupled to the inner reinforcing ring 120 is formed relatively shorter than the length of the opposite surface facing the fixing surface so that the cross-section thereof is formed in a trapezoidal shape as a whole, and the external reinforcement The length of the fixing surface of the lower part fixedly coupled to the ring 220 is formed to be relatively longer than the length of the opposite surface facing the fixing surface, so that the cross-section thereof is formed in a trapezoidal shape as a whole. According to claim 1,
The outer diameter of the outer reinforcing ring 220 is a pile coupling device, characterized in that formed larger than the outer diameter of the upper pile (1a) and the lower pile (1b). According to claim 1,
The width of the upper piece 110 and the lower piece 210, which is the separation distance between the outer reinforcing ring 220 and the inner reinforcing ring 120, is greater than the thickness of the upper pile 1a and the lower pile 1b. File combining device, characterized in that formed large. According to claim 1,
The longitudinal section of the inner reinforcing ring 120 is a pile coupling device, characterized in that it is inclined so that the width gradually increases toward the upper side. According to claim 1,
The longitudinal cross-section of the outer reinforcing ring 220 is a pile coupling device, characterized in that it is inclined so that the width gradually thickens toward the lower side. 7. The method according to any one of claims 1 to 6,
The periphery of the bolting holes 111 and 211 respectively formed in the upper part 110 and the lower part 210 to prevent the heads of the bolts 2 fastened to the bolting holes 111 and 211 from being received and protruded are A pile coupling device, characterized in that it is recessed to a certain depth from the surface of the upper piece 110 and the lower piece 210.

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