KR102086951B1 - PHC pile connection device for non welded joint - Google Patents

Abstract

The present invention relates to a device for non-welding connection of a joint of a PHC pile, capable of preventing a bolt for fastening upper and lower guide joining rings to a PHC pile from being released. According to the present invention, the device for non-welding connection of a joint of a PHC pile comprises: a lower guide joining ring including a lower floor plate, a lower outer guide, and a lower inner reinforcing wall; an upper guide joining ring including an upper floor plate, an upper outer guide, and an upper inner reinforcing wall; and a plurality of ring coupling units for coupling the upper guide joining ring and the lower guide joining ring.

Description

PHC pile connection device for non welded joint

The present invention relates to a joint connecting device of the PHC file, in particular, the upper and lower PHC file is jointly welded without welding, even when there is a problem in the smoothness at the end of the manufacturing of the upper and lower PHC file can be closely connected, To prevent the loosening of the bolts that fasten the lower guide joining ring to the corresponding PHC pile, there is no tightening tolerance on the fastening part of the upper and lower guide joining rings, so that the workability is improved. It is about.

Commonly known welding-free vertical bolting method is to place the steel connection block between the high strength concrete pile and the lower pile which are interconnected, and stress by combining bolt and PC nut which is basically formed in the manufacture of concrete pile with high tensile vertical bolt It's a connection method that keeps you connected. In addition, when necessary, the edge of the connection block is supported by an outer ring to reinforce the supporting strength, and there is no need to manufacture a separate joint file and has the advantage of using a ready-made file. However, in order to install the connection block, an effort is required to match the position of the through-hole of the connection block and the PC nut, and an additional external ring is required to increase the material cost.

As a background art of the present invention, Korean Patent Registration No. 10-1563476 has been proposed 'upper and lower detachable quick connect device for PHC pile and file construction method using the same'. It is installed on the first pile and the first mounting panel having a first coupling hole; A second mounting panel installed on the second pile and having a second coupling hole; A first connection part integrally formed with the first mounting panel or the second mounting panel and having a first connection hole; A second connection part integrally formed with the second mounting panel or the first mounting panel in which the first connection part is not formed, and having a second connection hole part; And characterized in that it comprises a fastening member for coupling the first connection portion and the second connection unit integrally, it is possible to reduce the cost required to manufacture the connection device, by selecting the assembly of the connection device in the factory or on site It can be done, the connection portion is installed on the top and bottom is separated separately has the advantage that it can be pre-assembled before putting the pile.

However, the background art does not have a plan for shear and bending reinforcement that resists a horizontal load, and it is difficult to determine the fastening position of the bolt member.

Korea Patent Registration No. 10-1563476

The present invention is connected to the upper and lower PHC pile joint without welding, even when there is a problem in the smoothness at the end of the manufacturing of the upper and lower PHC file can be closely connected, fastening the upper and lower guide joint ring to the corresponding PHC file It is possible to prevent loosening of the bolt, and to provide a joint-free welding connection device of the PHC pile to improve the workability because there is no fastening tolerance of the fastening portion of the upper and lower guide joint ring.

According to a preferred embodiment of the present invention, a non-welding connection device for a PHC file includes a connection unit for connecting a lower PHC file and an upper PHC file to a non-weld, and is fixedly installed at an upper end of the lower PHC file, A lower bottom plate having a through hole having the same diameter as the inner diameter of the PHC pile, a lower outer guide having a predetermined height in the outer diameter portion of the lower bottom plate and having a lower outer fastening hole at regular intervals on the outer circumferential surface thereof, A lower guide joining ring comprising a lower inner reinforcing wall having a predetermined height in the inner diameter portion of the lower bottom plate and having a lower inner fastening hole at regular intervals in a circumferential direction; It is fixedly installed at the lower end of the upper PHC pile, the upper bottom plate having a through hole of the same diameter as the inner diameter of the PHC pile in the center, and the cylindrical bottom with the same height as the lower outer guide portion in the outer diameter of the upper bottom plate An upper inner guide having an outer outer fastening hole at regular intervals on the outer circumferential surface, and having a cylindrical height having a predetermined height at an inner diameter portion of the upper bottom plate, and having an upper inner fastening hole at regular intervals in the circumferential direction An upper guide joint ring configured to include a wall; And a plurality of ring coupling means interconnecting the upper guide bonding ring and the lower guide bonding ring, wherein the lower bottom plate is divided into a plurality or more so as to correspond to uneven smoothness between the lower PHC pile and the upper PHC pile. The lower bottom plate segment having at least one lower bolt fastening hole is assembled by combining a lower segment protrusion and a lower segment recess with each other, and the upper bottom plate is divided into a plurality of upper bottom plates having at least one upper bolt fastening hole. The segment is characterized in that the assembly is composed of the combination of the upper segment projection and the upper segment groove.

In addition, the ring coupling means is characterized in that the ring fastening bolt having a tapered section in the head side portion or a ring fastening bolt having a tapered section in the head side portion and a screw section at the distal end.

In addition, the upper surface of the lower bottom plate segment is characterized in that the lower bolt loosening sawtooth stepped circumference is arranged around the lower bolt fastening hole.

In addition, the upper surface of the upper plate segment is characterized in that the upper bolt loosening sawtooth stepped circumference is arranged around the upper bolt fastening holes.

In addition, locating grooves are formed in the upper inner reinforcement wall at regular intervals in the circumferential direction to form a coupling position between the lower guide joining ring and the upper guide joining ring, and a symmetrical guide inclined surface is formed between neighboring locating grooves. The lower inner reinforcing wall is provided with a positioning piece having a positioning projection positioned in the locating groove and a stepping jaw in close contact with the guide inclined surface at least at one place on an outer circumferential surface thereof.

In addition, in order to prevent the loosening of the lower fastening bolt for fastening the lower guide coupling ring to the lower PHC pile, characterized in that the anti-loosening teeth are circularly arranged on the bottom of the head of the lower fastening bolt.

In addition, in order to prevent loosening of the upper fastening bolt for fastening the upper guide joint ring to the upper PHC pile, characterized in that the anti-loosening teeth are arranged in a circular shape on the bottom of the head of the upper fastening bolt.

In the non-welding connection device of the PHC pile according to the present invention, the upper and lower PHC piles may be jointed without welding by combining the lower guide joint ring and the upper guide joint ring by a ring fastening pin or a ring fastening bolt.

In addition, the lower guide bonding ring lower bottom plate and the upper guide bonding ring-side upper bottom plate is divided and assembled can be closely connected even if there is a problem in the smoothness at the end when manufacturing the upper, lower PHC pile.

In addition, it is possible to prevent the loosening of the bolts for fastening the upper and lower guide joining ring to the PHC pile by the lower bolt loosening prevention jagged step formed on the lower bottom plate segment and the upper bottom plate segment, respectively.

In addition, the tapering section of the ring fastening pin eliminates the fastening tolerance of the upper and lower guide joining rings, thereby improving workability.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
Figure 1a is an assembled perspective view of the joint portion of the non-welded connection device applied to the PHC file according to the present invention.
FIG. 1B is a top view of FIG. 1A; FIG.
2 is a cross-sectional view taken along the line AA of FIG.
3 is a cross-sectional view taken along line BB of FIG. 2.
Figure 4a is an exploded perspective view of the lower guide joint ring included in the jointless welding device of Figure 1a.
4B is a plan view of the lower guide joint ring included in the jointless welding device of FIG. 1A.
5A is an exploded perspective view of the upper guide joint ring included in the jointless welding apparatus of FIG. 1A;
FIG. 5B is a perspective view of the upper guide joint ring included in the jointless welding device of FIG. 1A; FIG.
Figure 6 is a view illustrating various forms of ring coupling means included in the jointless welding device of Figure 1a.
FIG. 7 is a perspective view illustrating a modification of the lower bottom plate segment and the upper bottom plate segment included in the jointless welding apparatus of FIG. 1A. FIG.
Figure 8 is a modified illustration of the lower fastening bolt and the upper fastening bolt applied to the present invention.

In the following the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the embodiments presented are exemplary for a clear understanding of the present invention is not limited thereto.

1A and 1B, the jointless welding device 10 of the PHC file according to the present invention is connected to the lower PHC file 10 and the upper PHC file 10 'by welding as shown in FIG. It is used to

Joint of the PHC pile non-welding connection device 10 is fixed to the lower guide bonding ring 12 of Figure 4, which is fixedly installed on the top of the lower PHC pile 10, the bottom of the upper PHC pile 10 ' 5 includes a plurality of ring coupling means for interconnecting the upper guide bonding ring 16, the upper guide bonding ring 16 and the lower guide bonding ring 12 with each other.

As shown in FIGS. 4A and 4B, the lower guide joining ring 12 has a lower bottom plate 121 having a through hole 12a having the same diameter as the inner diameter of the PHC pile 10 or 10 ', and the lower bottom plate. Lower outer guide 122 having a predetermined height in the outer diameter portion of the 121 and having a lower outer fastening hole 122a at regular intervals on the outer circumferential surface, and fixed to the inner diameter of the lower bottom plate 121. It is composed of a lower inner reinforcing wall 123 having a height and a cylindrical shape and having a lower inner fastening hole 123a at regular intervals in the circumferential direction.

Here, the lower outer fastening hole 122a and the lower inner fastening hole 123a are configured in the same number. The lower outer guide 122 and the lower inner reinforcement wall 123 may be welded to the lower bottom plate 121.

The upper guide joining ring 16 has an upper bottom plate 161 having a through hole 16a having the same diameter as the inner diameter of the PHC pile 10 or 10 'at the center, and an outer diameter portion of the upper bottom plate 161. An upper outer guide 162 having the same height as the lower outer guide 122 and having a cylindrical shape and having an upper outer fastening hole 162a at regular intervals on an outer circumferential surface thereof, and an inner diameter portion of the upper bottom plate 161. It is composed of an upper inner reinforcing wall 163 having a predetermined height and having a cylindrical shape and having an upper inner fastening hole 163a at a predetermined interval in the circumferential direction.

Here, the upper outer fastening hole 162a and the upper inner fastening hole 163a are configured in the same number as the lower outer fastening hole 122a (or the lower inner fastening hole 123a). The upper outer guide 162 and the upper inner reinforcement wall 163 may be welded to the upper bottom plate 161 by welding.

At this time, the outer circumferential surface of the upper outer guide 162 and the inner circumferential surface of the lower outer guide 122 have the same diameter. In addition, the inner circumferential surface of the upper inner reinforcement wall 163 and the outer circumferential surface of the lower inner reinforcement wall 123 have the same diameter. Accordingly, when the lower guide joining ring 12 and the upper guide joining ring 16 are coupled as shown in FIG. 2, the inner circumferential surface of the upper outer guide 162 is fitted to the outer circumferential surface of the lower outer guide 122, and at the same time, the upper inner reinforcing wall The outer circumferential surface of 163 is fitted to the inner circumferential surface of the lower inner reinforcement wall 123.

On the other hand, the non-welded connection device 10 of the PHC pile is to correspond to the non-uniform smoothness generated at the end during the manufacturing between the lower PHC pile 10 and the upper PHC pile 10 ', as shown in Figure 4a The lower bottom plate 121 is divided into a plurality or more, and the lower bottom plate segment 1210 having at least one lower bolt fastening hole 121a is assembled by combining the lower segment protrusion 1210a and the lower segment recess 1201b. Is preferably configured.

In addition, as shown in FIG. 5A, the upper bottom plate 161 is divided into a plurality or more, so that the upper bottom plate segment 1610 having at least one upper bolt fastening hole 161a is formed by the upper segment protrusion 1610a and the upper segment groove ( 1610b) is preferably assembled and assembled.

In this case, the structure of the lower segment protrusion 1210a and the upper segment protrusion 1610a may have a dovetail shape, thereby increasing the bonding strength.

As such, the lower bottom plate 121 is composed of a plurality of lower bottom plate segments 1210, and the upper bottom plate 161 is composed of a plurality of upper bottom plate segments 1610, so that the burned amount per unit area of the steel sheet is reduced, thereby reducing the manufacturing cost. Has the additional advantage of reducing the cost.

The ring coupling means may be a ring fastening pin 18 having a tapered section 18a that is forcibly fitted into the lower outer fastening hole 122a and the upper outer fastening hole 162a as shown in FIG. 6A. have. Alternatively, as shown in (b) of FIG. 6, it may be a ring fastening bolt 18 'having the same tapered section 18a and a screw section 18b screwed to the lower inner fastening hole 123a at the distal end thereof.

Meanwhile, in order to prevent loosening of the lower fastening bolt 14 for fastening the lower guide joining ring 12 to the lower PHC pile 10, a lower bolt fastening hole is provided on the upper surface of the lower bottom plate segment 1210 as shown in FIG. 7. It is preferable that the lower bolt loosening sawtooth stepped 1212 is arranged in a circular arrangement around the 121a.

In addition, in order to prevent loosening of the upper fastening bolt 17 for fastening the upper guide joint ring 16 to the upper PHC pile 10 ', an upper bolt is fastened to an upper surface of the upper bottom plate segment 1610 as shown in FIG. It is preferable that the upper bolt loosening sawtooth stepped 1612 is arranged in a circular arrangement around the ball 161a.

In addition, as shown in FIGS. 4 and 5, the upper inner reinforcing wall 163 has a locating groove 163b at regular intervals in the circumferential direction to match a coupling position between the lower guide joining ring 12 and the upper guide joining ring 16. ) Is formed, and a symmetrical guide inclined surface 163c is formed between neighboring locating grooves 163 and 163, and the lower inner reinforcing wall 123 has at least one outer circumferential surface at the locating groove 163b. A positioning piece 124 having a positioning projection 124a to be positioned and a stepping projection 124b in close contact with the guide inclined surface 163c is provided.

The welding method of the lower PHC pile 10 and the upper PHC pile 10 'through the connection device will be described.

First, the lower guide coupling ring 12 is fixedly installed through the lower fastening bolt 14 fastened to the steel wire fixing nut (not shown) on the upper end of the lower PHC pile 10 as shown in FIG. 2.

Then, the upper guide coupling ring 16 is fixedly installed through the upper fastening bolt 17 fastened to the steel wire fixing nut (not shown) at the lower end of the upper PHC pile 10 '.

Then, the upper guide bonding ring 16 is coupled to the lower guide bonding ring 12 so that the upper PHC pile 10 'and the lower PHC pile 10 are positioned on the same straight line, and then the upper guide bonding ring ( 16) and the lower guide joint ring 12 is coupled to the plurality of ring fastening pins 18 to connect the upper and lower PHC piles 10 'and 10 to each other.

At this time, the upper guide bonding ring 16 is easily coupled to the lower guide bonding ring 12 because the upper outer guide 162 is guided by the lower outer guide 122 of the lower guide bonding ring 12.

In addition, the upper guide joining ring 16 and the lower guide joining ring 12 are in close contact with the upper inner reinforcing wall 163 and the lower inner reinforcing wall 123 to reinforce the shear resistance and bending resistance of the joint between the pile. .

In addition, the positioning protrusion 124a provided on the outer circumferential surface of the lower inner reinforcing wall 123 is slid along the guide inclined surface 163c of the upper inner reinforcing wall 163 to be inserted into the locating groove 163b to ring fastening pins. The fastening position of the 18 (or ring fastening bolt 18 ') is automatically determined, making the fastening work much easier.

In this way, if the non-welding connection device 10 of the PHC pile is applied, no welding is performed on the joints of the PHC piles 10 and 10 ', thereby reducing the welding material cost and eliminating the need for skilled welders, thereby increasing the operating cost. It is alleviated.

Furthermore, the lower bottom plate 121 is composed of a plurality of lower bottom plate segments 1210, and the upper bottom plate 161 is composed of a plurality of upper bottom plate segments 1610, so that the PHC piles 10, 10 ′ may be formed. It is possible to solve the problem of uneven smoothness generated during manufacturing, and has an additional advantage of reducing the manufacturing cost by reducing the amount of burnout per unit area of the steel sheet.

In addition, as compared with the conventional bolt fastening method, the fastening position of the ring fastening pin 18 or the ring fastening bolt 18 'is automatically determined, thereby shortening the connection work time between the piles.

In addition, the upper surface of the lower bottom plate segment 1210 is a circular arrangement of the lower bolt loosening saw tooth stepped 1212 around the lower bolt fastening hole (121a) to the lower guide joining ring 12 to the lower PHC pile 10 The loosening of the lower fastening bolt 14 to be fastened to can be effectively prevented.

In addition, the upper surface of the upper plate segment 1610 has a circular upper teeth fixing stepped teeth 1612 are arranged around the upper bolt fastening hole (161a) to the upper guide joint ring 16 to the upper PHC pile 10 ' Unfastening of the upper fastening bolt 17 to be fastened to the) can be effectively prevented.

In addition, in the ring coupling means, both the ring fastening pin 18 or the ring fastening bolt 18 'are forcibly fitted with a tapered section 18a, so that there is no play between the upper and lower PHC piles 10 and 10'. It has a close bonding condition, which improves workability.

On the other hand, in order to prevent loosening of the lower fastening bolt 14 for fastening the lower guide joining ring 12 to the lower PHC pile 10, as shown in Figure 8 to prevent the loosening teeth on the bottom of the head of the lower fastening bolt 14 141 may be configured to be circularly arranged.

In addition, in order to prevent loosening of the upper fastening bolt 17 for fastening the upper guide bonding ring 16 to the upper PHC pile 10 ', as shown in Figure 8 for preventing loosening on the bottom of the head of the upper fastening bolt 17 The teeth 171 may be configured to be arranged in a circle.

So far, the present invention has been described in detail with reference to the presented embodiments, but those skilled in the art may make various modifications and modifications without departing from the technical spirit of the present invention with reference to the presented embodiments. will be. The invention is not limited by the invention as such variations and modifications but only by the claims appended below.

12: Lower guide joining ring
16: Upper guide joining ring
18: ring fastening pin
18 ': Ring tightening bolt

Claims (7)

In the connecting unit for connecting the lower PHC pile 10 and the upper PHC pile 10 'by welding,
A lower bottom plate 121 fixedly installed at an upper end of the lower PHC pile 10 and having a through hole 12a having a diameter equal to an inner diameter of the PHC pile 10 or 10 'at the center, and the lower bottom plate ( A lower outer guide 122 having a predetermined height and having a predetermined height in the outer diameter portion and having a lower outer fastening hole 122a at regular intervals on the outer circumferential surface thereof, and a predetermined height in the inner diameter portion of the lower bottom plate 121. A lower guide joining ring 12 having a cylindrical shape and having a lower inner reinforcing wall 123 having a lower inner fastening hole 123a at regular intervals in a circumferential direction;
An upper bottom plate 161 fixedly installed at a lower end of the upper PHC pile 10 'and having a through hole 16a having a diameter equal to an inner diameter of the PHC pile 10 or 10' at the center thereof; An upper outer guide 162 having a height equal to that of the lower outer guide 122 at the outer diameter portion of 161 and having an upper outer fastening hole 162a at regular intervals on an outer circumferential surface thereof, and the upper bottom plate Upper guide joining ring (16) comprising an upper inner reinforcing wall (163) having a predetermined height in the inner diameter portion of the (161) and cylindrically shaped and having an upper inner fastening hole (163a) at regular intervals in the circumferential direction. and;
Includes; a plurality of ring coupling means for interconnecting the upper guide bonding ring 16 and the lower guide bonding ring 12,
In order to cope with the uneven smoothness between the lower PHC pile 10 and the upper PHC pile 10 ', the lower bottom plate 121 is divided into a plurality of or more lower portions having at least one lower bolt fastening hole 121a. The plate segment 1210 is assembled by combining the lower segment protrusion 1210a and the lower segment recess 1201b with each other, and the upper bottom plate 161 is divided into a plurality of or more at least one upper bolt fastening holes 161a. An upper sole plate segment 1610 having an upper and lower plate segments 1610a is assembled by combining the upper segment protrusion 1610a and the upper segment recess 1610b with each other;
In order to match the coupling position between the lower guide joining ring 12 and the upper guide joining ring 16, the upper inner reinforcing wall 163 is formed with locating grooves 163b at regular intervals in the circumferential direction, and adjacent locating. Between the grooves 163 and 163 a symmetrical guide inclined surface 163c is formed,
The lower inner reinforcing wall 123 has a positioning protrusion 124a positioned in the locating groove 163b at at least one outer circumferential surface thereof and a stepping protrusion 124b in close contact with the guide inclined surface 163c. The non-welded connection device of the PHC pile, characterized in that the crystal piece 124 is provided. The method of claim 1,
The ring coupling means includes a ring fastening pin 18 having a tapered section 18a at the head side portion or a ring fastening bolt 18 having a tapered section 18a at the head side portion and a screw section 18b at the distal end thereof. 18 ') non-welded connection of the PHC pile. The method of claim 1,
The upper surface of the lower bottom plate segment 1210 is a non-welded connection device of the PHC pile joint, characterized in that the lower bolt loosening sawtooth stepped 1212 is arranged around the lower bolt fastening hole (121a). The method of claim 1,
The upper surface of the upper plate segment (1610) of the joint connection of the PHC pile non-welded, characterized in that the upper bolt loosening sawtooth stepped 1612 is arranged around the upper bolt fastening hole (161a). delete The method of claim 1,
In order to prevent the loosening of the lower fastening bolt 14 which fastens the lower guide joint ring 12 to the lower PHC pile 10, the anti-loosening teeth 141 are arranged in a circular shape on the bottom of the head of the lower fastening bolt 14. Non-welded connection device of the PHC pile, characterized in that. The method of claim 1,
In order to prevent loosening of the upper fastening bolt 17 which fastens the upper guide joint ring 16 to the upper PHC pile 10 ', the anti-loosening teeth 171 are formed on the bottom of the head of the upper fastening bolt 17. Non-welded connection device of the PHC file, characterized in that arranged.

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