KR101543961B1 - Complex pile - Google Patents

Abstract

The present invention relates to a composite pile efficiently improving a coupling structure between a steel pipe pile supporting a structure and the PHC pile inserted into and supported by the ground. The present invention comprises: the steel pipe pile wherein the structure is supported by one side end and a thread is formed in the other side end; and a PHC pile where a reinforcement band to prevent damage is provided to both side ends and the thread corresponding to the thread of the steel pipe pile is provided to one reinforcement band to be screwed to the steel pipe pile. Through this configuration, the present invention improves a quality of a connection portion of the PHC pile and the steel pipe pile since the thread is premanufactured to be fastened in a site when the PHC pile and the steel pipe pile are manufactured. Moreover, the present invention reduces a site construction period to reduce overall construction period.

Description

Compound file {COMPLEX PILE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite file, and more particularly, to a composite file in which a fastening structure between a steel pipe file for supporting a structure and a PHC file (Prestressed spun high strength concrete pile)

The file is a structural element used to transfer the load transferred from the upper structure to the lower ground. The file is largely divided into concrete file and steel file depending on the constituent material. PHC file (Prestressed spun High strength Concrete Pile) is widely used in construction site in the representative form of concrete file. The main feature of this type is the strength of concrete pile and the strength of concrete pile through the use of high strength concrete and the introduction of prestressing force using steel wire. And the stiffness can be effectively improved. Also, a round steel pipe file is a representative type of steel pipe file.

The PHC file has an advantage that the bottom end bearing capacity is excellent and the price is lower than that of the steel pipe file. The steel pipe file is excellent in resistance against the flexural load and has an advantage of being easily inserted into a hard ground. Recently, a compound file has been developed to take full advantage of these two types of advantages. This is a new type of file, which is a combination of two different structural materials by linking and integrating steel pipe files at the top of the PHC file.

Generally, the PHC file is firstly pushed up to the planned depth, and then the PHC file is installed. Then, the steel pipe file is connected to the top of the PHC file, It is necessary to connect the file in the longitudinal direction.

1 is a view schematically showing a configuration for connecting a conventional PHC file and a steel pipe file.

Fig. 1 (a) is a view showing a construction for welding between a steel pipe file and a PHC file by welding. Referring to the drawings, when a steel pipe file 10 is placed on the upper side and a PHC file 20 is placed on the lower side, the lower side 11 of the steel pipe 10 and the upper side of the PHC 20 21) are brought into contact with each other, and the steel pipe file (10) and the PHC file (20) are fastened with the weld (y) along the circumferential direction of the abutting portion.

Fig. 1 (b) is a view showing a construction in which a separate fastening member is provided between the steel pipe file and the PHC file and fastened. Referring to the drawings, a steel pipe 10 is provided with a fastening portion 12 having a threaded portion formed at a lower portion thereof and a fastening portion 22 having a threaded portion formed at an upper portion of the PHC pile 20. The lower side 11 of the steel pipe 10 and the upper side 21 of the PHC 20 are brought into contact with each other and the fastening member 31 is placed on the lower side 11 of the steel pipe 10 The PHC 20 is arranged so as to cover the entire upper surface 21 of the PHC file 20 and the steel pipe file 10 and the PHC file 20 are fastened using the bolts 32. [

Both of the above-mentioned methods have a problem that the air is delayed due to a considerable time in the field assembly work.

In addition, in the case of the welding connection, there is a problem that it is difficult to secure the required quality depending on the working environment as the work is performed in the field, and there is also a problem that the work progress itself is impossible due to weather conditions such as rain.

In addition, although the workability and work efficiency of the bolt connection is increased in the field as compared with the welding connection, it is inconvenient to separately manufacture the bolt fastening part, and additional cost is incurred by separately manufacturing the bolt fastening component Thereby increasing the construction cost as a whole.

The present invention has been made to solve the above problems, and it is an object of the present invention to provide a compound file capable of screwing a PHC file and a steel pipe file by using a field construction equipment by forming a thread corresponding to a PHC file and a steel pipe file, respectively The purpose is to do.

According to an aspect of the present invention, there is provided a composite file including a file having a structure supported at one end thereof and a thread formed at the other end thereof; And a PHC file provided with a reinforcing band at one end to prevent breakage, and a screw thread corresponding to the thread of the pile is provided on the reinforcing band, so that the PHC file is screwed with the pile.

The PHC file includes: a concrete body having a hollow portion; A cap plate disposed to cover both side ends of the concrete body and having a plurality of latching grooves; A plurality of steel wires inserted into the concrete body and having opposite end portions fixed to the retaining grooves of the cap plate at both sides of the concrete body; And a reinforcing band disposed on one side of the cap plate so as to be in contact with the cap plate, a screw thread formed on an outer surface of the cap plate, and an inner side surface of the reinforcing band fastened to the concrete body.

The file is provided as a steel pipe file and includes a hollow steel pipe body; And a connection socket which is fastened to one end of the steel pipe body and has a thread formed on an inner side thereof.

The connection socket may be welded to one end of the steel pipe body.

The connection socket may further include a reinforcing member inserted into the steel pipe body and protruding to one side to support the inner surface of the steel pipe body.

Further, the file may be formed such that a thread is formed on a surface of the reinforcing member contacting the inner surface of the steel pipe body, a through hole is formed in the steel pipe body at a position corresponding to the thread of the reinforcing member, And a fastening member inserted into the threaded portion of the reinforcing member and fastened to the threaded portion of the reinforcing member to fix the connection socket to the steel pipe body.

Wherein the PHC file further comprises a reinforcing band at the other end, wherein a thread is formed on the outer surface of the first reinforcing band located at one end, and a thread is formed on the inner surface of the second reinforcing band located at the other end, May be formed so as to form a corresponding thread.

According to the composite file according to the present invention, since the thread is manufactured at the time of manufacture of the PHC file and the steel pipe file, the quality of the connection between the PHC file and the steel pipe file can be improved.

According to the present invention, since the PHC file and the steel pipe file are connected by a simple screw fastening method, it is possible to shorten the field construction time and shorten the entire construction period.

Further, since the composite file according to the present invention is threaded at the time of manufacturing the PHC file and the steel pipe file and threaded at the site, there is no need for a separate fastening structure or welded fastening, and the construction cost can be reduced.

FIG. 1 (a) is a cross-sectional view schematically showing a structure in which a conventional composite file is welded for fastening,
FIG. 1 (b) is a cross-sectional view schematically showing a structure in which a bolt is fastened to fasten a conventional composite file,
FIG. 2 is a sectional view schematically showing a PHC file among compound files according to an embodiment of the present invention. FIG.
FIG. 3 is an exploded perspective view schematically showing the configuration of a steel pipe file among the composite files according to the embodiment of the present invention, FIG.
4 is a cross-sectional view schematically showing a state in which a compound file is fastened according to an embodiment of the present invention;
FIG. 5 is a perspective view schematically illustrating the configuration of a steel pipe file among the composite files according to another embodiment of the present invention, FIG.
6 is a cross-sectional view schematically showing a PHC file among composite files according to another embodiment of the present invention;
FIG. 7 is a cross-sectional view schematically showing a state in which a composite file according to another embodiment of the present invention is installed on the ground.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are displayed on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

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

2 is a cross-sectional view schematically illustrating a PHC file among compound files according to an embodiment of the present invention.

Referring to FIG. 1, the PHC file 100 includes a concrete body 110 having a hollow portion, a center portion 121 disposed to cover both side ends of the concrete body 110, A steel wire 130 inserted into the concrete body 110 and having both ends fixed to the engagement grooves 122 of the cap plate 120; And a reinforcing band 140 for preventing breakage of both side portions.

The reinforcing bands 140 are provided at both ends of the concrete body 110 to prevent breakage of both sides of the concrete body 110.

The reinforcing band 140 is formed to have a cylindrical shape and has a flange portion 143 whose lower end extends outward. The outer side of the reinforcing band 140 has a connection socket 250 (see FIG. 3) A thread 141 for fastening is formed.

The upper surface of the reinforcing band 140 is disposed to be in contact with the cap plate 120 and the lower surface of the reinforcing band 140 formed with the inner side surface 142 and the flange portion 143 is connected to the concrete body 110). As a method for fastening the reinforcing band 140 to the concrete body 110, for example, a mold in which a concrete is placed to form a concrete body is provided, the reinforcing band is placed in the mold, If the concrete is poured into the mold, the reinforcement band can be fastened integrally with the concrete body while the concrete is hardened. Also, the cap plate may be fastened together at this time. Of course, the method for fastening the reinforcing band and the cap plate is not limited thereto, and a method of manufacturing a PHC file in which a reinforcing band is conventionally provided can be applied.

3 is an exploded perspective view schematically showing the configuration of a steel pipe file in a composite file according to an embodiment of the present invention.

Referring to the drawings, the steel pipe file 200 includes a hollow steel pipe body 210, a connection socket 250 coupled to one end of the steel pipe body 210 and having a thread 252 formed on an inner side thereof, Respectively.

The connecting socket 250 is formed as a hollow body 251 and has a thread 252 corresponding to a thread 141 (see FIG. 2) formed on the outer surface of the reinforcing band, . The end surface 253 of the connection socket 250 which contacts the steel pipe body 210 is inserted into the steel pipe body 210 and is inserted into the end surface of the steel pipe body 210, And further includes a reinforcing member 260.

When the bending load is applied in a state where the steel pipe body 210 and the connection socket 250 are engaged with each other, the reinforcing member 250 can easily break the portion where the steel pipe body 210 and the connection socket 250 are fastened, This structure is provided to reinforce this. Of course, the shape of the reinforcing member 250 is not limited thereto, and the reinforcing member 260 may be provided in a cylindrical shape in close contact with the inner surface of the steel pipe body 210, as shown in FIG.

The steel pipe file 200 may further include a fastening member 270 to fasten the connection socket 250 to the steel pipe body 210. A thread 262 is formed on the surface 261 of the reinforcing member 260 which contacts the inner surface of the steel pipe body 210 and the steel pipe body 210 is provided with a screw thread The through hole 220 is formed at a position corresponding to the through hole 262. The fastening member 270 is formed in a bolt shape and is inserted into the through hole 220 and fastened to the thread 262 of the reinforcing member 260 to connect the connection socket 250 to the steel pipe body 210 Can be fixed. Of course, the construction for fixing the connection socket 250 to the steel pipe body 210 is not limited to this, and various mechanical fastening methods such as welding can be applied.

4 is a cross-sectional view schematically showing a state in which a composite file is fastened according to an embodiment of the present invention.

Referring to the drawings, the PHC file 100 of the present invention is disposed on the lower side, and the steel pipe file 200 is disposed on the PHC file 100. The connecting pipe 250 of the pipe 200 is connected to the thread 141 formed on the reinforcing band 140 of the PHC file 100 by rotating the pipe 200. With this configuration, it is possible to fasten the steel pipe file 200 to the PHC file 100 simply by screwing.

Although not shown in the drawings, a hole is provided through the connection socket and the PHC file in the connection socket of the steel pipe file, and a pin is inserted into the hole so that the screw connection of the connection socket and the PHC file is released It is needless to say that the construction for fixing the screw fastening is not limited to this, and various mechanical methods can be applied.

Further, although not shown in the drawing, in the case where the steel pipe file has a hollow corresponding to the diameter of the reinforcing band of the PHC file, it is possible to directly connect to the thread formed in the reinforcing band of the PHC file A screw thread may be formed directly on the inner surface of the steel pipe file body.

6 is a cross-sectional view schematically showing a PHC file among composite files according to another embodiment of the present invention.

The PHC file 500 includes a concrete body 510 having a hollow portion and a center portion 521 disposed to cover both side ends of the concrete body 510 and having a plurality of engagement grooves 522 A steel wire 530 inserted into the concrete body 510 and having both ends fixed to the engagement grooves 522 of the cap plate 520; A first reinforcing band 540 and a second reinforcing band 550 for preventing breakage of both sides.

The first reinforcing band 540 is formed to have a cylindrical shape and has a flange portion 543 whose lower end extends outward, and a thread 541 is formed on the outer side. The upper surface of the first reinforcing band 540 is disposed to be in contact with the cap plate 520 and the lower surface of the first reinforcing band 540 having the inner surface 542 and the flange portion 543, And is fastened to the concrete body 510.

The second reinforcing band 550 is formed to have a cylindrical shape and has a flange portion 553 whose upper end extends inward. The second reinforcing band 550 has a thread 541 formed on the outer surface of the first reinforcing band 540 A thread 551 is formed on the inner surface of the second reinforcing band 550. [ A cap plate 520 is closely attached to an inner surface of a flange portion 553 of the second reinforcing band 550 and an outer surface of the flange portion 553 is fastened to the concrete body 510.

With this configuration, when a plurality of PHC files 500 are provided, it is possible to easily connect PHC files without additional fastening members or welding processes.

FIG. 7 is a cross-sectional view schematically showing a state in which a composite file according to another embodiment of the present invention is installed on the ground.

For example, in order to install a specific structure on the ground, a PHC file is buried in the ground, a steel pipe file is connected to a PHC file, and a structure is installed in the steel pipe file. Generally, a steel pipe file is made to have a length of 5 m, and a PHC file is made to have a length of 10 m. Of course, it may be manufactured in various lengths according to the needs of the user. When a file is to be buried at a depth of 25m on the ground using a steel pipe file and a PHC file having the same length, two PHC files are firstly connected to the ground, Files can be screwed into a 25-meter-long file on the ground. Such an example of construction is shown in Fig.

Referring to the drawing, a first PHC file 500 and a second PHC file 600 are concluded on the ground before a PHC file is embedded. At this time, the reinforcing band 640 provided on the upper side of the second PHC file 600 is screwed and connected to the reinforcing band 550 provided on the lower side of the first PHC file 500. Then, the PHC file connected with the external equipment is buried in the ground. At this time, it is preferable that the reinforcing band 540 provided on the upper side of the first PHC file 500 is buried so as to be exposed to some extent. The steel pipe file 200 is placed on the upper side of the first PHC file 500 by using external equipment such as a punching machine on the upper reinforcing band 540 of the first PHC file 500, 200 are gradually moved downward to be rotated to connect the connection socket 250 of the steel pipe file 200 to the upper reinforcing band 540 of the first PHC pile 500 by screwing.

With this configuration, the PHC file can be easily connected and buried according to the depth at which the PHC file is buried on the ground, and the steel pipe file can be connected to the PHC file embedded in the ground by simple screw fastening, The effect of reducing the cost can be obtained.

Of course, it is also possible to embed the steel pipe file first on the ground according to the situation of the ground or the operator's needs, and connect the PHC file to the upper side of the steel pipe file.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

100: PHC file 110: Concrete body
120: cap plate 130: steel wire
140: reinforcement band 200: steel pipe file
210: Steel pipe body 220: Through hole
250: connecting socket 260: reinforcing member
270: fastening member

Claims (7)

A hollow tube body protruding from one side and inserted into the other side end of the tube body and supporting an inner side surface of the tube body and having a thread on a surface contacting the tube body A connecting socket having a reinforcing member and formed with a thread on an inner side thereof and a through hole formed at a position corresponding to a thread of the reinforcing member in the steel pipe body and fastened to the thread of the reinforcing member, A file having a fastening member to be fixed to the steel pipe body; And
A cap plate disposed so as to cover both side ends of the concrete body and having a plurality of latching grooves formed thereon, and a cap plate inserted in the concrete body and disposed at both sides of the concrete body, And a flange portion inserted into the concrete body and extending outward from the lower end is seated on the step portion of the concrete body and the upper surface is supported on the cap plate, A PHC file having a reinforcing band formed with a thread corresponding to the thread of the connecting socket and screwed to the connecting socket of the pile;
A compound file containing.
delete delete The method according to claim 1,
The connecting socket includes:
Welded to one end of the steel pipe body.
delete delete The method according to claim 1,
The PHC file includes:
Further comprising a reinforcing band at the other end,
Wherein a thread is formed on the outer surface of the first reinforcing band located at one end and a thread corresponding to the thread of the first reinforcing band is formed on the inner surface of the second reinforcing band located at the other end. file.

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