KR20180007293A - Connecting device for PHC pile and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a PHC pile connection device. According to the present invention, when a follow pile in which at least two PHC piles are connected by a PHC pile connection device in which reinforcing members are radially formed on a connecting pipe connecting upper and lower plates is constructed as a buried pile, cement milk filled between a perforation hole and the PHC pile is introduced into all internal spaces of the PHC pile connection device and filled therein to be cured and hardened, and thus compression and flexural strength of the PHC pile connection device are maximized to improve performance of a product. A bending reinforcing member is mounted on an edge of the bottom of an upper plate between the reinforcing members formed radially in the connecting pipe to increase bending stiffness of the upper plate to suppress deformation of the upper plate around a bolt hole due to tensile force transmitted to a bolt, and thus economic efficiency is improved according to improvement of constructability and construction quality of a follow pile.

Description

PHC pile connecting device and manufacturing method thereof [0002]

The present invention relates to a PHC pile connecting device for connecting two or more PHC piles having the same diameter, and more particularly, to a PHC pile connecting device for connecting a PHC pile connecting device having a reinforcing member radially formed on a connecting pipe connecting upper and lower plates When the pile is installed with two or more PHC piles, the cement milk filled between the perforated hole and the PHC pile flows into all the internal spaces of the PHC pile connection device, thereby filling the compression and bending strength of the PHC pile connection device The reinforcing member is installed at the edge of the upper plate between the reinforcing members radially formed in the connection pipe as well as the maximizing plate to increase the rigidity against the bending deformation of the upper plate to suppress the deformation of the upper plate member around the bolt hole due to the tensile force transmitted to the bolt Of the PHC pile connection and the simple, fast and precise, standardized PHC pile connection It relates to crude methods.

Recently, as the urban area has expanded rapidly, many structures such as roads and bridges as well as various structures including various structures have been constructed on soft ground. Since the depth from the ground to the ground is generally very deep, the length of the PHC pile is increased to transmit the load of the structure to the support layer.

However, since the maximum length of the PHC pile currently produced is only 15 m, it is inevitable to connect a plurality of PHC piles of the same diameter to each other when the depth of the support layer is 15 m or more. And the tip of the pile and the metal plate joined to the tip of the upper PHC pile were welded together.

However, in case of PHC pile connection by welding, the workability is greatly influenced by the climatic conditions. In case of wind blowing or rain, the welded joint is difficult and the quality is not good. The expensive construction equipment for constructing the pile is required to stop and wait for the work, resulting in a decrease in the efficiency of the construction equipment and an increase in the construction cost due to an increase in the construction period.

In order to connect the PHC pile with the welding method, a metal veneer must be installed on the head or tip of the PHC pile since the pile is produced. Therefore, in order to smoothly supply the PHC pile to the site, Since the PHC pile should be manufactured and secured in inventory, there is a problem that a lot of cost is put into inventory management of the PHC pile.

In order to solve the above problems, Korean Patent Registration No. 10-1460562 discloses a connecting device for fixing a main body in which a corrugated steel plate is formed between a first and a second original plate in a cylindrical shape and is connected to the first and second original plates The PHC pile head and bolt are fastened with bolts or the PHC piles are fastened to the PHC piles through the first and second discs. Due to space limitations, electric wrenches can not be used and only manual wrenches can be used When the pile is installed with the PHC pile connected by the connecting device, the cement milk is not charged in the inner space formed by the corrugated steel plate, so that after the completion of the construction, There is a problem that it is difficult to maximize the increase of the bending strength.

Also, Korean Patent No. 10-1535863 discloses that a top plate portion in which a plurality of first fastening holes are formed and a bottom plate portion in which a plurality of second fastening holes are formed are connected to each other by a connecting portion, and the bottom plate portion and the connecting portion are passed through the first fastening hole A first bolt insertion hole and a second bolt insertion hole opened in an outer diameter direction of the connection portion and communicating with the second fastening hole, wherein the first fastening hole of the upper plate through the first bolt insertion hole is a PHC Since the bolt is fastened to the connection end of the pile, the workability is partially improved as compared with Korean Patent No. 10-1460562. However, since the bolt fastened through the first bolt insertion hole can not be observed from the outside after connecting the PHC pile, There is a difficulty in quality inspection for confirming the presence or absence of fastening and fastening. In addition to being heavy in weight and manufactured by a single casting, a PHC pile connected by a connecting device After the cement milk has not been charged to the first bolt insertion hole to complete construction, it has a difficult to maximize the compression and Flexural Strength increases of the connecting device.

Japanese Laid-Open Utility Model Application No. 51-000707 discloses a method of connecting a first and a second plate having a plurality of fastening holes by a reinforcing member arranged radially to a connecting pipe, The PHC pile is connected to the first and second plates by bolts. The PHC pile is connected to the first and second plates by a bolt, The cement milk is not charged into the reinforcing ring at the time of construction, so that it is difficult to expect compression and bending strength increase of the connecting device after completion of the construction.

Korean Patent No. 10-1056655 discloses a method of connecting a lower disk and an upper disk with a plurality of reinforcing plates and fixing an annular ring surrounding the reinforcing plate to the reinforcing plate with bolts, similar to the Japanese Utility Model Application No. 51-000707 When the pile is installed with the joint pile connected with the PHC pile by the connecting device, the pile is not charged into the annular ring, so that the compression of the connecting device is completed after the completion of the construction. It is difficult to expect an increase in bending strength.

Korean Patent No. 10-1460562 Korean Patent No. 10-1535863 Japanese Utility Model Utility Bulletin No. 51-000707 Korean Patent No. 10-1056655

SUMMARY OF THE INVENTION It is an object of the present invention to provide a PHC pile connection device in which a reinforcing member is radially formed on an outer circumferential surface of a connection pipe so that a coupling pipe connecting an upper plate member and a lower plate member is visible, The lower plate and the lower PHC pile can be easily bolted to each other using a power tool through a tool insertion hole penetrating the upper plate and the PHC pile connecting device and the PHC pile are connected to each other. And a PHC pile connecting device for visually confirming whether or not the bolts fixing the PHC pile are fastened and fastened.

Another object of the present invention is to provide a PHC pile connecting device, in which when two piles having two or more PHC piles having the same diameter are connected by a joint pile, the cement milk filled between the piercing hole and the PHC pile is connected to the PHC pile connection device And the PHC pile connecting device is capable of maximizing compression and flexural strength of the PHC pile connecting device.

It is still another object of the present invention to provide a method of manufacturing a steel pipe which is characterized in that a flexural stiffening member is mounted on a bottom edge of a top plate between reinforcing members radially formed on a connecting pipe, It is possible to prevent deformation of the upper plate material around the bolt hole and to prevent the bolt hole of the lower plate material from being positioned on the same line as the PC nut formed on the end of the PHC pile after the PHC pile end is mounted, And to provide a PHC pile connecting device which can be installed on a PHC pile easily by forming a guide member in a radial direction.

It is a further object of the present invention to provide a method of assembling a coupling guide member to a tool insertion hole in a state where a lower plate member and a lower PHC pile are bolted to each other through a tool insertion hole penetrating through an upper plate member, The upper plate and the upper PHC pile are fastened with bolts to increase the contact area between the PHC pile and the PHC pile connection device and also to prevent the PHC pile end from being formed due to the fact that no vertical bolt holes are formed in the upper plate, The present invention provides a PHC pile connection device capable of mitigating a concentrated stress that can be generated by a PHC pile.

Still another object of the present invention is to provide a method of manufacturing a PHC pile which is manufactured by using an assembling jig and a position fixing rods provided thereon and fastening the precise and standardized upper and lower plate members, And a method of manufacturing the connecting device.

According to the present invention,

An upper and a lower plate through which a plurality of bolt holes pass through in the same line as the PC nut formed at the end of the PHC pile with the central part passing therethrough;

One of the upper and lower plate members is rotated in a predetermined angle so that the bolt hole of the lower plate member is inserted into the bolt hole of the upper plate member in the same line as the bolt hole of the lower plate member, Tool inserts;

A connection pipe connecting the upper and lower plate members and closing the penetrating central portion of the upper and lower plate members;

And the upper and lower plates are fixed radially to the outer circumferential surface of the connection pipe so as to be connected to the upper and lower plates, thereby increasing the bending stiffness of the upper and lower plates. When the piles are installed, the cement milk flows into all the inner spaces between the upper and lower plates, A reinforcing member of a 'C' shape in which the 'A' shape is formed opposite to or formed with an opening so as to increase the rigidity against compression and flexural load when the cement milk is filled;

The length L of the outer circumferential surface of the manual tool working space between the reinforcing members is formed to be longer than the length of the outer circumferential surface of the reinforcing member ' And securing a working space of the manual tool for bolting the PHC pile.

In addition, the present invention provides a method of manufacturing a PHC pile-

(1) The lower part of the PHC pile is located on the same line as the PC nut formed on the end of the PHC pile, and the lower part has a diameter that can be engaged with the tool insertion hole of the upper plate and can be engaged with the bolt hole of the lower plate A first step of preparing a plurality of fixed jigs for fixing a position fixing bar having a bolt hole mounting part with a diameter;

(2) a second step of passing the upper plate member through the tool insertion hole of the upper plate member to the position fixing rod of the assembling jig to the assembly jig;

(3) a third step of fixing the position of the upper plate and the connecting pipe by using the connecting pipe after mounting the connecting pipe on the upper plate mounted on the assembling jig;

(4) The 'U' -shaped reinforcement member having a size that allows the inner surface to be fitted to the side of the position fixing rod and having an opening for introducing the cement milk when the pile is installed on the front surface or the front and side surfaces A fourth step of fixing the reinforcing member to an upper surface of the upper plate and the connecting pipe after fixing the position of the reinforcing member;

(5) a fifth step of fitting the bolt hole of the lower plate member to the bolt hole mounting portion of the position fixing rod, mounting the lower plate to the assembly jig, and fixing the position of the lower plate member and the reinforcing member to the usable contact;

(6) The sixth step is to complete the welding by welding the upper and lower plate members and the reinforcement member after welding the reinforcement member and the connection pipe welded together by welding.

According to the present invention, when a PHC pile is connected to a PHC pile connecting device in which a reinforcing member is radially formed on the outer circumferential surface of a connecting pipe so that a connecting pipe connecting the upper plate and the lower plate is visible, Using the electric wrench, the lower plate and the lower PHC pile can be easily bolted to the PHC pile connection device and the PHC pile, so that the PHC pile connection device and the PHC pile fixing bolt can be visually confirmed It is possible to construct a joint pile while securing a high workability and a construction quality.

In addition, according to the present invention, when the embedded pile is constructed with joint piles connected by two or more PHC piles having the same diameter by the PHC pile connection device, the cement milk charged between the perforation hole and the PHC pile It is possible to maximize the compression and flexural strength of the PHC pile connecting device after the cement milk is cured by flowing into and filling the internal space, thereby improving the product performance.

According to the present invention, since a bending stiffening member is mounted on the bottom edge of the upper plate between reinforcing members radially formed in the connecting pipe, the rigidity against the bending deformation of the upper plate is increased and the bolt It is possible to suppress the deformation of the upper plate material around the hole and also to prevent the deformation of the upper plate material around the holes and to prevent the bolt holes of the lower plate material from being radially guided on the outer circumferential surface of the lower plate material so as to be easily positioned on the same line as the PC nut formed on the end of the PHC pile. And can be easily installed on the PHC pile, it is possible to improve the workability and the work efficiency, thereby shortening the working time and improving the economical efficiency.

According to the present invention, the fastening guide member is coupled to the tool insertion hole with the bolts fastened to the lower plate member and the lower PHC pile through the tool insertion hole penetrating through the upper plate member, And the upper PHC pile is fastened with a bolt to fix the contact area between the PHC pile and the PHC pile connection device and to form a bolt hole in the upper plate, The stress can be relaxed and the structural stability can be increased.

According to the manufacturing method of the PHC pile connecting device of the present invention, the assembling jig and the position fixing rods provided thereon are used, and the upper and lower plate members, the connecting pipe and the reinforcing member, And can be advantageously produced.

1 is a perspective view of a PHC pile connecting device according to an embodiment of the present invention;
Fig. 2 is an exploded perspective view of Fig.
Fig. 3 is a plan view of Fig. 1
4 is a sectional view taken on line A-A '
5 to 9 are diagrams showing the construction process of the PHC pile connecting device of the embodiment of the present invention
10 to 11 are numerical analysis diagrams of a PHC pile connecting apparatus according to an embodiment of the present invention
12 is a perspective view of a PHC pile connecting apparatus according to another embodiment of the present invention.
13 is an exploded perspective view of Fig. 12,
Fig. 14 is a plan view of Fig. 12
15 is a cross-sectional view taken along the line A-A 'in Fig. 14
16 to 21 are diagrams showing a construction process of the PHC pile connecting device of another embodiment of the present invention
22 is a perspective view of a PHC pile connecting apparatus according to another embodiment of the present invention
23 is an exploded perspective view of FIG. 22,
FIGS. 24 to 29 are diagrams showing a manufacturing process of the PHC pile connecting apparatus according to another embodiment

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view of a PHC pile connecting device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of FIG. 1, and FIG. 3 is a plan view of FIG.

The PHC pile connecting apparatus 100 according to the present invention includes an upper and a lower plate member 110 having a plurality of bolt holes 111 and 121 passed through in the same line as the PC nut 11 formed at the end of the PHC pile 10, One of the upper and lower plate members 110 and 120 is rotated at a predetermined angle and the upper plate member 110 and the lower plate member 120 are aligned in a line with the bolt hole 121 of the lower plate member 120, A tool insertion hole 130 is formed in the bolt hole 121 of the lower plate 120 between the bolt holes 111 of the lower plate 120 so that a power tool for fastening the bolt B can be inserted. A connection pipe 140 for closing the penetrating central portion of the upper and lower plate members 110 and 120 while connecting the lower plate members 110 and 120 is connected to the upper and lower plate members 110 and 120, The upper and lower plates 110 and 120 are fixed radially to the outer circumferential surface of the coupling pipe 140 so as to increase the flexural rigidity of the upper and lower plates 110 and 120, Between Shaped reinforcement member 150 is formed so that the rigidity against compression and flexural load is increased when the cement milk is filled and filled in the entire inner space and the cement milk is cured, The length L of the outer circumferential surface of the manual tool working space between the reinforcing members 150 is set to be longer than the length l of the outer circumferential surface of the reinforcing member 150 that is bent to face the upper plate 110 and the PHC pile, The work space of the manual tool is ensured. This will be described in more detail as follows.

And a guide member 160 radially fixed to the outer circumferential surface of the lower plate member 120 so as to be easily seated on an end of the PHC pile.

A flexural reinforcement member 170 that is mounted on the bottom surface of the upper plate 110 between the reinforcing members 150 and suppresses deformation of the upper plate 110 around the bolt holes 111 by a tensile force transmitted to the bolts B, .

The construction and construction of the embodiment of the present invention will be described below.

As shown in FIG. 4, the upper and lower plate members 111 and 121, which have the same diameter and penetrate the center portion, and in which a plurality of bolt holes 111 and 121 are passed in the same line as the PC nut 11 of the PHC pile 10 A power tool for fastening a bolt B to the bolt hole 121 of the lower plate 120 may be inserted between the bolt holes 111 of the upper plate 110, Thereby forming the tool insertion hole 130.

The upper and lower plates 110 and 120 are connected by a connecting pipe 140. The diameter of the connecting pipe 140 is larger than the diameter of the upper and lower plates 110 and 120 So that welding of the upper and lower plates 110 and 120 and the coupling pipe 140 is facilitated by the step.

A reinforcing member 150 is formed on the outer circumferential surface of the connection pipe 140 so as to face the inner circumferential surface of the connection pipe 140. The outer circumferential surface of the connection pipe 140 is seen through the reinforcing member 150, The PHC pile connecting device 100 and the PHC pile 10 can be constructed while checking the tightness and the fastening state of the bolt B fixed to the pile 10 and the PHC pile 10 ' The quality of the pile 1 can be improved.

The reinforcing member 150 is installed such that the tool insertion holes 130 penetrated through the upper plate 110 are positioned inside the reinforcing member 150 and then the upper plate 110 The manufacturing of the PHC pile connecting device 100 of the present invention is completed by fixing the bending stiffening member 170 to the bottom edge of the bottom plate 120 or radially fixing the guide member 160 to the outer circumferential surface of the bottom plate 120.

5 to 6, the guide member 160 of the PHC pile connecting apparatus 100 is connected to the PHC pile 10 by the PHC pile connection apparatus 100, The PHC pile connecting device 100 is rotated so that the bolt holes 121 of the lower plate 120 and the PC nuts 11 of the PHC pile 10 are aligned on the same line, The pile connecting device 100 is mounted on the end of the PHC pile 10. [

In this state, the bolts B are placed on the PC nuts 11 of the PHC pile 10 through the bolt holes 121 of the bottom plate 120, and then the bolts B of the upper plate member 110 The process of inserting the power tool into the tool insert hole 130 penetrating through the PC nut 11 and inserting the bolt B into the PC nut 11 of the PHC pile 10 by the rotational force of the power tool is performed by a plurality of PC nuts 11, So that the bottom plate 120 is fixed to the end of the PHC pile 10 by the bolts B while the bolts B are fastened.

7, when the lower plate 120 of the PHC pile connecting device 100 is attached to the end of the PHC pile 10, the upper plate 110 of the PHC pile connecting device 100 is inserted into the upper plate 110, The bolt hole 111 penetrating the upper plate 110 of the PHC pile connection device 100 and the PC nut 11 of the PHC pile 10 'are brought into close contact with the end of the PHC pile 10' The bolts B are positioned on the PC nuts 11 of the PHC pile 10 'through the bolt holes 111 of the upper plate 110 and the bolts B Is fastened to the PC nut 11 of the PHC pile 10 'until the bolts B are fastened to the PC nuts 11 so that the bolts B are fastened to the upper plate 110 The PHC pile 10 'is fixed and at least two PHC piles are connected to form a joint pile 1 as shown in FIG.

By forming the length L of the outer circumferential surface of the manual tool work space S between the reinforcing members 150 to be longer than the length l of the outer circumferential surface of the reinforcing member 150 bent in the shape of ' The work space of the manual tool used for fastening the bolt B to the PC nut 11 of the PHC pile 10 'can be ensured through the bolt hole 111 of the PHC pile 10'.

When the joint pile 1 in which two or more PHC piles 10 and 10 'are connected by the PHC pile connecting device 100 is inserted into the perforation hole 20 filled with cement milk, Likewise, the cement milk filled between the PHC piles 10 and 10 'and the perforation hole 20 is separated from the inner space of the PHC pile connecting device 100, that is, the upper and lower plates 110) 120 and the connecting pipe 130, thereby maximizing the compression and bending strength of the PHC pile connecting device 100 after cement milk curing.

As a result of the three-dimensional numerical analysis of the PHC pile connecting device 100, when a compressive load of 2539 kN, which is an allowable proof strength of a 500 mm ultra high strength PHC pile, is applied to the PHC pile connecting device 100, When the cement milk is not filled in the reinforcing member 150, a compressive stress of 175.24 MPa is generated at the edge of the reinforcing member 150 of 'a' shape as shown in FIG. 10, while a compressive stress of 'A' When the cement milk is filled in the member 150, a compressive stress of 149.78 MPa is generated at the edge of the 'a' -shaped reinforcement member 150 as shown in FIG. 11, As the cement milk was filled in the inside, the maximum compressive stress occurring in the PHC pile connecting device 100 was reduced by 14.5%.

Accordingly, when the PHC pile connecting device 100 is manufactured from the SS 400 steel having the allowable strength of 140 MPa, the PHC pile connecting device 100 can be manufactured in a state in which the cement milk is not filled in the reinforcing member 150 of the ' Shaped reinforcing member 150 generates compressive stress of 140 MPa when the compressive load of 2028 kN is applied to the reinforcing member 150 and the cement milk is filled in the reinforcing member 150 of the ' When a compressive force of 2373 kN is applied to the connecting device 100, compressive stress of 140 MPa is generated in the 'a' shaped reinforcing member 150, so that the cement milk is filled in the reinforcing member 150 of 'a' The compressive load that can be supported by the connecting device 100 is increased by about 17% because the PHC pile connecting device 100 is constructed with the joint pile 1 connecting the PHC piles 10 and 10 ' When a compressive force acts on the embedded pile, a large compression force is applied to the PHC pile connecting device 100 At this time, the compressive force is stably supported by the 'A' shaped reinforcing member 150 and the cement milk filled therein, and at the same time, the flexural rigidity of the end edges of the upper and lower plates 110 and 120 is reinforced, It is possible to stably maintain the connection state of the PHC piles 10 and 10 'while suppressing the deformation of the pile coupling device 100.

When tensile force acts on the embedded pile installed with the joint pile 1, tensile force is applied to the PHC pile connecting device 100 through the bolts B fastened to the PC nut 11 of the PHC pile 10 ' Since the deformation of the bolt hole 121 of the lower plate member 120 is suppressed by the reinforcing member 150 installed in the vicinity of the bolt hole 121 in the vicinity of the bolt hole 121 by the tensile force transmitted to the bolt B, The deformation of the plate member 120 does not occur to a large extent.

However, the bolt hole 111 passing through the upper plate 110 passes through the inside of the manual tool work space, and the reinforcement member 150 is installed at a distance from the bolt hole 111, and the tensile force transmitted to the bolt B Since the deformation of the upper plate 110 around the bolt hole 111 occurs very much, the arc of the upper plate 110 between the reinforcing members 150 radially formed on the outer circumferential surface of the connection pipe 140 Since the upper plate member 110 around the bolt hole 111 can increase the rigidity against the bending deformation of the bolt hole 111 due to the tensile force acting on the buried pile, It is possible to suppress deformation.

12 to 14, the PHC pile connecting apparatus 100 'of another embodiment of the present invention includes a lower plate member 120' and a lower plate member 120 ' The PHC pile 10 is inserted into the bolt hole 121 of the bolt hole 121 of the bolt hole 121 and the bolt hole 121 of the bolt hole 121, A lower plate member 120 through which a plurality of bolt holes 121 are passed is formed in the same line as the PC nut 11 formed at the end of the upper and lower plate members 110 and 120, A connecting pipe 140 for closing the penetrating central portion of the connecting pipe 110 and 120 is fixed and radially fixed to the outer circumferential surface of the connecting pipe 140 to enhance the bending stiffness of the upper and lower plates, The cement milk is flowed into and filled in all the internal spaces between the upper and lower plates 110 and 120 and the connecting pipe 140 when the pile is installed, Shaped member or a " T " -shaped member or a " -shaped member " is formed between the bolt holes 121 so as to increase rigidity against compression and flexural load when the milk is cured, The PHC pile 10 is fixed to the bottom of the upper plate 110 while being coupled to the tool insertion hole 130. The bolt B is used to guide the upper plate 110 and the PHC pile 10 ' Member 180, which will be described in more detail as follows.

And a guide member 160 radially fixed to the outer circumferential surface of the lower plate member 120 so as to be easily seated on an end of the PHC pile.

The upper and lower plate members 110 and 110 around the bolt holes 111 and 121 are fixed to the bottom surface of the upper plate member 110 between the reinforcing members 150 and the upper surface of the lower plate member 120 by a tensile force transmitted to the bolts B, And a bending stiffening member 170 'for suppressing deformation of the stiffener 120.

The fastening guide member 180 includes a body 181 having a larger diameter than the tool insertion hole 130 and a bolt hole 182 penetrating the body 181 to receive the bolt B, And includes a step 183 formed on the outer circumferential surface of the body 181 so as to be engaged with the tool insertion hole 130.

Hereinafter, the construction and construction of another embodiment of the present invention will be described.

15, a lower plate member 120 through which a plurality of bolt holes 121 pass through is formed in the same line as the PC nut 11 of the PHC pile 10 while passing through the center at the same diameter An upper plate member 110 through which the tool insertion hole 130 is inserted is formed so that the power tool can be inserted in the same line as the bolt hole 121 of the lower plate member 120.

The upper and lower plates 110 and 120 are connected by a connecting pipe 140. The diameter of the connecting pipe 140 is larger than the diameter of the upper and lower plates 110 and 120 So that welding of the upper and lower plates 110 and 120 and the coupling pipe 140 is facilitated by the step.

The reinforcing member (150) is installed radially on the outer circumferential surface of the connection pipe (140), wherein the reinforcing member (150) is formed such that an 'I' shape, a 'T' shape or a ' 150 and the outer circumferential surface of the coupling pipe 140 are seen to visually confirm the tightness and tightness of the bolts B fixing the pile connecting device 100 'and the PHC piles 10, 10' It is possible to improve the quality of construction.

The reinforcing member 150 may be disposed between the bolt holes 121 penetrating the lower plate 120 and may be disposed between the lower surface of the upper plate 110 and the upper surface of the lower plate 120 between the reinforcing members 150. [ The manufacturing of the PHC pile connecting device 100 'of the present invention is completed by fixing the flexural reinforcement member 170' or radially fixing the guide member 160 to the outer circumferential surface of the lower plate 120.

16 to 17, the PHC pile connecting device 100 'manufactured in the above process is connected to the end of the PHC pile 10 by using the guide member 160 of the PHC pile connecting device 100' The PHC pile connecting device 100 'is rotated so that the bolt holes 121 of the lower plate 120 and the PC nuts 11 of the PHC pile 10 are positioned on the same line, And the bolts B are positioned on the PC nuts 11 of the PHC pile 10 through the bolt holes 121 of the PHC pile connecting device 100 The process of inserting the power tool into the insertion hole 130 and fastening and fixing the bolt B to the PC nut 11 of the PHC pile 10 by the rotational force of the power tool is performed by the bolts B to the PC nuts 11, So that the lower plate 120 is fixed to the end of the PHC pile 10 by the bolts B. [

18, when the lower plate member 120 of the PHC pile connecting device 100 'is mounted on the end of the PHC pile 10, the upper plate member 110' of the PHC pile connecting device 100 ' The body 181 of the fastening guide member 180 is inserted into the space between the upper and lower plates 110 and 120 through the space between the upper and lower plates 110 and 120, The upper plate member 110 is attached to the tool insertion hole 130 in the top face direction from the bottom face of the plate member 110 so that the step 183 is caught by the tool insertion hole 130, The PC nut 11 of the PHC pile 10 'is positioned so as to be in line with the bolt hole 182 of the fastening guide member 180 while closely contacting the end of the PHC pile 10'.

In this state, the bolt B is positioned on the PC nut 11 of the PHC pile 10 'through the bolt hole 182 of the coupling guide member 180, and the bolt B is rotated by the rotational force of the manual tool The process of fastening the PHC pile 10 'to the PC nut 11 is repeated until the bolts B are fastened to the PC nuts 11 and the PHC pile (10 ') is fixed and a joint pile (1') to which at least two PHC piles are connected is formed as shown in FIG.

Although the fastening guide member 180 is described as being coupled to the tool insertion hole 130 before the PHC pile 10 'is brought into close contact with the upper plate 110, the PHC pile 10' The fastening guide member 180 may be coupled to the tool insertion hole 130 passing through the upper plate 110 in a state in which the fastening guide member 180 is in close contact with the upper plate 110.

When the compressive force acts on the embedded pile constructed with the joint pile 1 connected to the PHC pile 10 or 10 'by the PHC pile connecting device 100', a large compressive force is applied to the PHC pile connecting device 100 ' At this time, any one of the reinforcing member 150 having the 'I' shape, the 'T' shape or the 'A' shape is formed opposite to the reinforcing member 150 and the cement milk filled in the reinforcing member 150, So that the connection state of the PHC piles 10 and 10 'can be stably maintained.

The bolt holes 111 and 121 penetrated through the upper and lower plate members 110 and 120 pass through the interior of the manual tool work space and are inserted into the reinforcing member 150 at a distance from the bolt holes 111 and 121, Since the deformation of the upper and lower plate members 110 and 120 around the bolt holes 111 and 121 is very large due to the tensile force transmitted to the bolt B, An arc-shaped flexural reinforcement member 170 'is mounted and fixed to the edge of the upper surface of the upper plate 110 between the reinforcement members 150 and the upper surface of the lower plate 120 to form upper and lower portions around the bolt holes 111 and 121 It is possible to suppress the deformation of the upper and lower plate members 110 and 120 around the bolt holes 111 and 121 due to the tensile force acting on the embedded pile since the plates 110 and 120 can increase the rigidity against bending deformation. It is.

When the joint pile 1 'to which the PHC pile 10 or 10' is connected by the PHC pile connecting device 100 'is inserted into the perforation hole 20 filled with cement milk, as shown in FIG. 21 , The cement milk filled between the PHC piles 10 and 10 'and the perforation hole 20 includes the space between the inner spaces of the PHC pile connecting device 100' Is filled and cures into all the internal spaces formed by the upper and lower plate members 110 and 120 and the coupling pipe 130 to maximize compression and flexural strength of the PHC pile connecting device 100 ' .

When the body 181 of the coupling guide member 180 is coupled to the tool insertion hole 130 and the contact area between the PHC pile connecting device 100 'and the PHC pile 10' is increased, The concentrated stress occurring at the ends of the pile 10 'is relaxed, thereby increasing the structural stability of the joint pile 1' connected to the PHC pile connecting device 100 '.

22 to 23 relate to a PHC pile connection device 100 " of another embodiment of the present invention, wherein the PHC pile connection device 100 " of another embodiment of the present invention is a one- Shaped PHC cemented reinforcing member 150 used in the pile connecting device, instead of the reinforcing member 150 used in the example of the PHC pile connection device, a " c " Shaped reinforcing member 150 is formed by pressing a steel plate to form a 'C' shape, so that it is easy to manufacture and the lower PHC pile connecting device 100 '' Shaped reinforcing member 150 is welded to the upper and lower plates 110 and 120 by welding to the coupling pipe 130, Manufactures precise and standardized PHC pile connections (100 ") Can. The PHC pile connecting device 100 '' according to another embodiment of the present invention may include a guide member 160, a flexural reinforcement member 170, and a fastening member member 180, The configurations applied to one embodiment are the same as those described above, and the drawings and description thereof are omitted. 22 to 23 show that the reinforcing member 150 having the 'C' shape has an opening at the front, but the 'C' shaped reinforcing member 150 having the front and side openings is also formed in the opening An opening is also formed on the side surface as shown in FIG.

24 to 29 show a PHC pile connection device 100 '' using the 'C' -shaped reinforcement member 150 of the reinforcing member 150 in the method of manufacturing the PHC pile connection device 100 '' of the present invention. ) In a stepwise manner,

24 is a view showing a state in which a plurality of positions coincident with the PC nut formed on the end portion of the PHC pile, which can be engaged with the bolt holes 121 of the tool insertion hole 130 of the upper plate 110 and the bolt holes 121 of the lower plate 120, The position fixing bar 210 is inserted into the tool insertion hole 130 of the upper plate 110 and is engaged with the fixing jig 200. [ It is preferable that a bolt hole mounting portion 211 having a diameter capable of fitting into the bolt hole 121 of the lower plate member 120 is formed at an upper portion thereof.

25 shows a second step of passing the upper plate member 110 through the tool insertion hole 130 of the upper plate member 110 to the position fixing rod 210 of the assembly jig 200 and mounting the upper plate member 110 to the assembly jig 200 In the case where the tool fixing hole 210 of the assembling jig 200 is passed through the tool inserting hole 130 of the upper plate 110 and the upper plate 110 is mounted on the assembling jig 200 The outer diameter of the position fixing bar 210 is such that the outer diameter of the position fixing bar 210 can be fitted and passed through the tool insertion hole of the upper plate member 110 so that the upper plate member 110, No precise and standardized welding is possible.

26 shows a third step of fixing the position of the upper plate 110 and the connection pipe 130 by the usable contact after the connection pipe 130 is mounted on the upper plate 110 mounted on the assembly jig 200 .

27 is a cross-sectional view of the 'C' shape of the choke nibble having a size that allows the inner surface to be fitted to the side surface of the position fixing rod 210 and having an opening for introducing the cement milk when the pile is installed on the front surface, A fourth step of fixing the reinforcing member 150 to the upper plate 110 and the coupling pipe 130 after the reinforcing member 150 is mounted, The inner surface of the reinforcing member 150 of the 'C' shape coupled to the position fixing rod 210 is fitted to the inner surface of the fixing rod 210 when the reinforcing member 150 of the 'C' Shaped reinforcing member 150 that is fitted to the position fixing bar 210 does not flow so that it can be quickly assembled and can be precisely welded.

28 shows the bolt hole 121 of the lower plate 120 and the bolt hole 121 of the bolt hole 121 of the position fixing rod 210 having a size fit to the bolt hole 121 of the lower plate 120, And fixing the position of the lower plate 120 and the reinforcing member 150 by the use of the fixing jig 200 after fitting the lower plate 120 to the fixing jig 200. In this fifth step, The outer diameter of the bolt hole mounting portion 211 of the position fixing rod 210 is larger than the outer diameter of the bolt hole mounting portion 211 of the lower plate member 120 in the case of fitting the bolt hole 121 of the lower plate member 120 to the bolt hole mounting portion 211 of the position fixing rod 210 So that the lower plate member 120 which is fixed to the bolt hole mounting portion 211 of the position fixing rod 210 does not flow and the precise and standardized welding This is possible.

29 shows a state in which the upper and lower plate members 110 and 120 and the reinforcing member 150 are welded by welding after welding the reinforcement member 150 and the connection pipe 130 welded to each other, And completing the sixth step.

Although the present invention has been described in connection with certain exemplary embodiments and drawings, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be interpreted to limit the scope of the present invention. It must be interpreted in terms of meaning and concept. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only examples of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

100: PHC peg connection device 110: top plate
120: lower plate member 130: tool insertion hole
140: connector 150: reinforcing member
160: guide member 170: bending reinforcement member
200: Jig for assembly

Claims (8)

An upper and a lower plate through which a plurality of bolt holes pass through in the same line as the PC nut formed at the end of the PHC pile with the central portion passing therethrough;
One of the upper and lower plate members is rotated in a predetermined angle so that the bolt hole of the lower plate member is inserted into the bolt hole of the upper plate member in the same line as the bolt hole of the lower plate member, Tool inserts;
A connection pipe connecting the upper and lower plate members and closing the penetrating central portion of the upper and lower plate members;
The bending strength of the upper and lower plates is increased by being radially fixed to the outer circumferential surface of the connecting pipe so as to be connected to the upper and lower plates. When the pile is installed, cement milk flows into all the inner spaces between the upper and lower plates and the connecting pipe. And a reinforcing member formed to face the " a " shape so that the rigidity against compression and flexural load increases when the cement milk is filled and cured,
The length L of the outer circumferential surface of the manual tool working space S between the reinforcing members is made longer than the length l of the outer circumferential surface of the reinforcing member which is bent in the " a " shape so as to secure the working space of the manual tool PHC peg connection device. An upper plate member through which a tool insertion hole is inserted so that a power tool for bolt fastening can be inserted into the bolt hole of the lower plate member in the same line as the bolt hole of the lower plate member while passing through the center portion;
A lower plate having a plurality of bolt holes penetrating the same in a line with the PC nut formed on the PHC pile with the central part penetrating therethrough;
A connection pipe connecting the upper and lower plate members and closing the penetrating central portion of the upper and lower plate members;
The upper and lower plate members are radially fixed to the outer circumferential surface of the connecting pipe so as to be connected to the upper and lower plate members to increase the bending stiffness of the upper and lower plates and to inject and fill the cement milk into all the inner spaces between the upper and lower plates and the connecting pipe A reinforcing member which is one of an 'I' -shaped, a 'T' -shaped or a -shaped-shaped member opposed to each other to increase the rigidity against compression and flexural load when the cement milk is cured;
And a coupling guide member which is coupled to the tool insertion hole and mounted on a bottom surface of the upper plate to guide the upper plate and the PHC pile to be fixed by bolts. An upper and a lower plate through which a plurality of bolt holes pass through in the same line as the PC nut formed at the end of the PHC pile with the central portion passing therethrough;
One of the upper and lower plate members is rotated in a predetermined angle so that the bolt hole of the lower plate member is inserted into the bolt hole of the upper plate member in the same line as the bolt hole of the lower plate member, Tool inserts;
A connection pipe connecting the upper and lower plate members and closing the penetrating central portion of the upper and lower plate members;
And the upper and lower plates are fixed radially to the outer circumferential surface of the connection pipe so as to be connected to the upper and lower plates, thereby increasing the bending stiffness of the upper and lower plates. When the piles are installed, the cement milk flows into all the inner spaces between the upper and lower plates, Shaped reinforcement member having openings on the front surface or on the front and side surfaces to increase the rigidity against compression and flexural load when the cement milk is filled and cured,
The length L of the outer circumferential surface of the manual tool work space S between the reinforcing members is longer than the length of the front surface of the reinforcing member of the 'C' shape of the front end or front and side surfaces, Thereby securing a working space of the PHC peg. The connector according to claim 2,
A body having a larger diameter than the tool insertion hole;
A bolt hole penetrating the body so that the bolt is engaged;
And a stepped portion formed on the outer circumferential surface of the body to be engaged with the tool insertion hole. The method according to any one of claims 1 to 3,
Further comprising a guide member radially fixed to the outer circumferential surface of the bottom plate to easily mount the PHC pile on an end of the PHC pile. The method according to claim 1 or 3,
And a bending stiffening member which is mounted on the bottom surface of the upper plate between the reinforcing members and suppresses deformation of the upper plate member around the bolt hole by tensile force transmitted to the bolt. The method of claim 2,
Further comprising a bending stiffening member which is mounted on the bottom surface of the upper plate and between the reinforcing members and fixed to the upper surface of the lower plate to suppress deformation of upper and lower plate members around the bolt hole by tensile force transmitted to the bolt. Connection device. A manufacturing method of a PHC pile connection device,
(1) The lower part of the PHC pile is located on the same line as the PC nut formed on the end of the PHC pile, and the lower part has a diameter that can be engaged with the tool insertion hole of the upper plate and can be engaged with the bolt hole of the lower plate A first step of preparing a plurality of fixed jigs for fixing a position fixing bar having a bolt hole mounting part with a diameter;
(2) a second step of passing the upper plate member through the tool insertion hole of the upper plate member to the position fixing rod of the assembling jig to the assembly jig;
(3) a third step of fixing the position of the upper plate and the connecting pipe by using the connecting pipe after mounting the connecting pipe on the upper plate mounted on the assembling jig;
(4) The 'U' -shaped reinforcement member having a size that allows the inner surface to be fitted to the side of the position fixing rod and having an opening for introducing the cement milk when the pile is installed on the front surface or the front and side surfaces A fourth step of fixing the reinforcing member to an upper surface of the upper plate and the connecting pipe after fixing the position of the reinforcing member;
(5) a fifth step of fitting the bolt hole of the lower plate member to the bolt hole mounting portion of the position fixing rod, mounting the lower plate to the assembly jig, and fixing the position of the lower plate member and the reinforcing member to the usable contact;
(6) a sixth step of completing welding by welding the upper and lower plates and the reinforcing member by main welding after welding the reinforcing member and the connecting pipe welded to each other, ≪ / RTI >

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