KR101826244B1 - Composite pile and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a method for manufacturing a composite pile having a reinforcing sleeve, a reinforcing plate, and an end reinforcing member provided with an implant file at the tip of a pile member in a simple, quick and economical manner, Accordingly, since the assembly process is omitted during the construction, the composite pile is more advantageous in terms of improvement in workability and improvement.

Description

Technical Field [0001] The present invention relates to a composite pile and a method for manufacturing a composite pile,

The present invention relates to a composite pile installed in a ground and a method of manufacturing the same.

Generally, the basic construction method using piles is roughly classified into a piling method in which a pile manufactured in advance at a factory or the like is carried to the site, and a piling method in which a pile is directly manufactured (field casting) in the field. In the conventional pile method, cement milk (cement milk) is poured into a perforation hole, which is excavated using an excavation equipment such as a screw auger and an excavation pile method in which a pile is directly mounted on the ground, The pile is inserted and the pile is inserted and the cement milk is cured.

Here, the pile driving pile method is advantageous in that the tip end of the pile penetrates relatively loose ground due to the striking energy and penetrates into the solid ground, so that the supporting force of the pile at the tip end is advantageous. However, And thus the range of application is limited. Therefore, in order to solve the noise and vibration problems of the pile driving method, most of them have been applied to the pile driving method.

In the pile-up method, slime is left at the bottom of the perforated hole when the perforated hole is excavated, while the lower pile of the perforated hole is weaker than the ground surface due to the stress relaxation. , There is a disadvantage that the tip end side bearing force of the pile becomes small when the tip end of the pile is fixed to the slime and the stress relaxation region. Therefore, in order to have economical efficiency in terms of the internal resistance of the pile and the ratio of the bearing capacity of the end of the pile, it is important to improve the end bearing capacity of the pile by allowing the tip of the pile to pass through the slurry layer Do.

[0004] The Korean Registered Patent No. 1484067 (published on Jan. 21, 2015) discloses a composite pile (hereinafter, referred to as " composite pile ") having a plurality of implant piles, (Hereinafter referred to as " composite pile "). 1 is an exploded perspective view showing a composite pile according to the prior art.

As shown in FIG. 1, a composite pile according to the related art includes a pile 10 embedded in a perforation hole in a ground, a hollow portion 12 formed along the longitudinal direction at the center, and a female thread hole 14 formed in a distal end surface thereof. ) And the female thread hole (14) to be inserted into the ground sheet through the slurry layer on the bottom side of the perforation hole when the pile (10) is embedded and protruded from the tip of the pile (10) ).

The pile (10) includes a pile member made of concrete and a prestressed concrete (PC) steel buried in the longitudinal direction of the pile member. The implant files 20 are made of metal.

A well-known concrete pile manufacturing apparatus (refer to Korean Patent Laid-Open Publication No. 2014-0021460, Korean Patent Registration No. 1059218, etc.) is used for manufacturing the pile 10. Generally, a concrete pile manufacturing apparatus includes an end plate (often referred to as a fixed-side wharf) and a tensioner, both of which are open at both ends and which are disposed at both ends of the mold, . The mold has a structure divided into an upper mold and a lower mold. And an end plate and a tension unit are respectively installed at both ends of the lower mold with the upper mold separated therefrom. Further, both ends of the PC steel materials are connected to the end plate and the tension unit. Then, concrete is inserted into the lower mold, After assembling with the mold, the pile 10 is manufactured by centrifugal molding and curing in a state in which the PC steels fixed at one end position by the end plate are pulled by a tension device opposed to the end plate.

The implant piles 20 are manufactured separately from the pile 10 by a separate process. When the piles 10 and the implant piles 20 are stored or transported or handled in a state where they are assembled with each other, the piles 10 and the joints 20 of the piles 10, which are relatively weak in terms of strength, It may be damaged or broken, so it should be assembled at the time of construction after it is transported to the site.

Since the assembly quality of the pile 10 and the implant pile 20 is determined according to the skill level of the operator and the working environment by assembling the pile 10 and the implant piles 20 at the time of construction in the field, There is a problem in that it is difficult to maintain a high degree of uniformity and there is a problem in that it is disadvantageous in terms of shortening a construction period and a construction cost because an assembling step of the pile 10 and the implant file 20 is included in the construction process.

An object of the present invention is to provide a composite pile which is more advantageous in terms of structural strength improvement and workability improvement and a method for easily manufacturing the composite pile.

The problems to be solved are not limited thereto, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention, a reinforcing plate 220 is disposed along a circumferential direction and includes a plurality of hole portions having a female thread hole 222 and a tension hole 224 adjacent to the female thread hole 222, A plurality of implant piles 230 each standing on the surface of the reinforcing plate 220 and a reinforcing sleeve 210 reinforcing band to which the reinforcing plate 220 is coupled at the tip side Preparing an end reinforcing member (200) having an internal region defined by the reinforcing sleeve (210) and the reinforcing plate (220) and protruding the implant files (230) toward the distal end; Placing the front end reinforcing member 200 at one end of the forming mold 310 and installing prestressed concrete steels 150 in the tension holes 224 at one end, Wow; The end plate 320 having the insertion holes 322 corresponding to the implant files 230 and the through holes 324 corresponding to the female screw holes 222 is inserted into the insertion holes 322 Coupling the bolts to the female screw holes (222) through the through holes (324) in the state where the implant files (230) are fitted and fastening the bolts to the distal end reinforcing member (200); Connecting a tensioner (330) to the other end of the PC steels (150) at the other end of the forming mold (310); A step of putting concrete into the forming mold 310 and performing centrifugal molding in a state where the PC steels 150 having one end fixed by the end plate 320 are stretched by the stretching machine 330 A method of manufacturing a composite pile may be provided.

At least the reinforcing plate 220 and the implant files 230 among the reinforcing sleeve 210, the reinforcing plate 220 and the implant files 230 constituting the distal end reinforcing member 200 are casted As shown in Fig.

The distal end reinforcing member 200 includes a reinforcing ring 220 interposed between the reinforcing plate 220 and the implant piles 230 and having hole portions 222 and 224 corresponding to the hole portions 222 and 224 a reinforcing ring 240, and the like. In this case, at least the implant files 230 among the reinforcing sleeve 210, the reinforcing plate 220, the implant files 230, and the reinforcement ring 240 constituting the distal end reinforcing member 200 And the reinforcing ring 240 may be integrally formed by casting.

According to the embodiment of the present invention, a plurality of female screw holes 226 are arranged along the circumferential direction, a male screw is formed on the outer circumference of the female screw holes 226, a tensile hole 229 is formed therein, A plurality of implant piles 230 erected on the surface of the reinforcing plate 220 and a reinforcing plate 220A to which a nut member 228 having a female screw is connected are formed on the inner circumference of the reinforcing plate 220, And a reinforcing sleeve 210 to which the reinforcing plate 220 is coupled at its tip end so as to have an inner region defined by the reinforcing sleeve 210 and the reinforcing plate 220, Preparing a tip reinforcing member (200C) protruded from the piles (230); Placing the front end reinforcing member 200C at one end of the forming mold 310 and installing the PC steel members 150 in the tension holes 229 at one end; The end plate 320 having the insertion holes 322 corresponding to the implant files 230 and the through holes 324 corresponding to the female threads of the nut members 228 is inserted into the insertion holes 322 Coupling the bolts to the female threads of the nut members (228) through the through holes (324) while the implant files (230) are inserted and fastening the bolts to the distal end reinforcing member (200C); Connecting a tensioner (330) to the other end of the PC steels (150) at the other end of the forming mold (310); A step of putting concrete into the forming mold 310 and performing centrifugal molding in a state where the PC steels 150 having one end fixed by the end plate 320 are stretched by the stretching machine 330 A method of manufacturing a composite pile may be provided.

The end reinforcing members 200, 200A, 200A including the reinforcing sleeve 210, the reinforcing plate 220 or 220A, and the implant piles 230 are formed at the distal end thereof, 200B or 200C), and a composite pile having a PC steel material 150 embedded therein.

According to an embodiment of the present invention, a pile member 100; And a front end reinforcing member 200A and 200C provided at the tip of the pile member 100 and reinforcing the tip of the pile member 100. The front end reinforcing members 200A and 200C are configured as follows A composite pile may be provided that includes a reinforcing plate 220, 220A, an implant pile 230, a reinforcing ring 240, and a reinforcing sleeve 210. [

The back surface of the reinforcing plates 220 and 220A facing the front end surface of the pile member 100,

A plurality of implant files 230, each of which is erected on the surface side of the reinforcing plates 220 and 220A,

The implant files 230 are interposed between the reinforcement plates 220 and 220A and the implant files 230 and are integrally formed with the implant files 230 coupled to the reinforcement plates 220 and 220A. And a reinforcement of a ring-shaped plate structure in which a load acting on the reinforcing plates 220 and 220A is dispersed and a resistance acting on the implant files 230 together with the loads acting on the implant files 230 is integrated Ring 240,

A reinforcing sleeve 210 having a leading end connected to the reinforcing plates 220 and 220A while surrounding the outer periphery of the tip side of the pile member 100,

Means for solving the problems will be more specifically and clarified through the embodiments, drawings, and the like described below. In addition, various solution means other than the above-mentioned solution means may be further proposed.

According to the embodiment of the present invention, by providing the composite pile having the implant files in the manufacturing step, further improved workability and construction economics can be ensured.

Further, since the implant files are molded integrally with the reinforcing plate or the reinforcing ring, a structurally stable composite pile can be provided.

In addition, since the end plate can be installed in a state that the end plate is supported by the implant files, the end plate installation process for manufacturing the composite file can be performed simply and quickly.

1 is an exploded perspective view showing a conventional composite pile (Japanese Patent Publication No. 1484067).
2 is a perspective view of a composite pile according to a first embodiment of the present invention.
3 is a perspective view showing the front end reinforcing member of the composite pile shown in FIG.
FIGS. 4 and 5 show a part of a method of manufacturing a composite pile according to a first embodiment of the present invention.
6 is a perspective view of a composite pile according to a second embodiment of the present invention.
7 is a perspective view of a composite pile according to a third embodiment of the present invention.
8 shows a part of a method of manufacturing a composite pile according to a first embodiment of the present invention.
9 is a perspective view of a composite pile according to a fourth embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. For a better understanding of the invention, it is to be understood that the size of elements and the thickness of lines may be exaggerated for clarity of understanding. Further, the terms used to describe the embodiments of the present invention are mainly defined in consideration of the functions of the present invention, and thus may be changed depending on the intentions and customs of the user and the operator. Therefore, the terminology should be interpreted based on the contents of the present specification throughout.

2 to 5 show a composite pile and a part of the manufacturing process according to the first embodiment of the present invention.

The composite pile according to the first embodiment of the present invention includes an elongated pile member 100, an end reinforcing member 200 provided at the tip of the pile member 100, and a pile member 100 inside the pile member 100. [ And a plurality of PC steels 150 buried in the longitudinal direction.

The pile member 100 is made of concrete. A hollow portion is provided along the longitudinal direction at a central portion of the pile member 100. [

The distal end reinforcing member 200 structurally reinforces the tip of the pile member 100 and improves the fitting ability of the composite pile and the tip end side support force when the composite pile is constructed. Preferably, the tip reinforcing member 200 is made of metal. The distal end reinforcing member 200 includes a reinforcing sleeve 210, a reinforcing plate 220, and a plurality of implant piles 230.

The front end of the pile member 100 is accommodated in the reinforcing sleeve 210. Thus, the reinforcing sleeve 210 surrounds the outer periphery of the tip end side of the pile member 100.

The reinforcing plate 220 is coupled to the leading end side of the reinforcing sleeve 210. Although not shown, the reinforcing plate 220 may be provided with a concave portion which is recessed to be curved toward the hollow portion of the pile member 100 at a central portion opposed to the hollow portion of the pile member 100. In the reinforcing plate 220, a plurality of holes (refer to reference numerals 222 and 224) are provided around the central portion at regular intervals along the circumferential direction. Each of the hole portions (refer to reference numerals 222 and 224) is constituted by a communication hole for connecting the female screw hole 222 and the tension hole 224 adjacently disposed adjacent to each other and the female screw hole 222 and the tension hole 224. These holes (see reference numerals 222 and 224) may be arranged in a row or a row along the circumferential direction.

The implant files 230 protrude from the surface of the reinforcing plate 220 toward the tip end and penetrate through the slurry layer on the bottom side of the perforation hole when the composite pile is embedded. Preferably, the implant files 230 are disposed between the holes (see reference numerals 222 and 224), respectively.

It is preferable that the reinforcing plate 220 and the implant files 230 are integrated with each other, but the present invention is not limited thereto. For example, the reinforcement sleeve 210, the reinforcement plate 220, and the implant files 230 may be integrally molded by casting. Alternatively, the reinforcing plate 220 and the implant piles 230 may be integrally formed by casting, and the reinforcing sleeve 210 and the reinforcing plate 220 may be welded together and integrated or bolted together.

The PC steel member 150 is composed of a linear member and a head provided at one or both ends of the linear member. The head of the PC steel material 150 may be formed during the manufacturing process of the PC steel material 150 and may be formed by a known mechanism in the manufacturing process of the composite pile according to the first embodiment. The head of the PC steel material 150 is exposed to the outside through the tension hole 224 and the tension is maintained in a state that the size is larger than the tension hole 224 and is caught in the tension hole 224. [ Preferably, the female screw hole 222 is formed to be larger than the head of the PC steel member 150, and the communication hole between the female screw hole 222 and the tension hole 224 is larger than the linear member of the PC steel member 150 Or smaller than the tensile hole 224 or equal to the tensile hole 224.

In order to manufacture the composite pile according to the first embodiment, a composite pile manufacturing apparatus including a known molding die 310, an end plate 320, and a known tensioner 330 is used. The composite pile according to the first embodiment includes a step of preparing the front end reinforcing member 200, a step of arranging the front end reinforcing member 200 provided at one end of the forming mold 310, A step of fastening the end plate 320 to the disposed end reinforcing member 200, a step of connecting the tensioner 330 to the PC steels 150 at the opposite side of the end plate 320, And a step of curing after centrifugal molding in the state that the concrete is put into the mold 310 and the PC steels 150 are stretched by the stretching machine 330.

First, the distal end reinforcing member 200 including the reinforcing sleeve 210, the reinforcing plate 220, and the implant piles 230 is prepared.

Next, the end reinforcing member 200 is disposed at one end of the forming mold 310 of the composite pile manufacturing apparatus, which is divided into an upper mold and a lower mold. At this time, the molding die 310 is separated from the lower mold, and the distal end reinforcing member 200 is disposed such that the tip ends of the implant files 230 are directed to the outside of the molding die 310.

Next, the PC steels 150 are installed so that one end of the PC steels 150 is caught in the tension holes 224 of the reinforcement plate 220, respectively.

The end plate 320 having the insertion holes 322 corresponding to the implant files 230 and the through holes 324 corresponding to the female screw holes 222 is then fastened to the distal end reinforcing member 200 . The end plates 320 are inserted into the through holes 322 of the end plate 320 in a state where the end plates 320 are supported on the implant files 230 by inserting the implant files 230 into the insertion holes 322 of the end plate 320. [ (222) of the reinforcing plate (220) through the bolts (324). At this time, the operator assembles the end plate 320 with the end plate 320 supported by the implant files 230, so that the fastening operation of the end plate 320 can be performed easily and quickly.

Next, a known tensioner 330 constituting a composite pile manufacturing apparatus is connected to the other end of the PC steels 150 at the other end of the forming mold 310.

Thereafter, the concrete is put into the forming mold 310, and the upper mold is assembled to the lower mold. Then, the PC steels 150 having the fixed positions at one end thereof by the end plate 320 are stretched by the stretching machine 330 Lt; / RTI >

Next, the composite pile manufacturing apparatus is rotated by the centrifugal type, centrifugal molding is performed, and curing is performed. Then, the manufacture of the composite pile according to the first embodiment, in which the distal end reinforcing member 200 having the implant files 230 are provided at the front end and the PC steel members 150 are buried therein, is completed.

6 is a perspective view of a composite pile according to a second embodiment of the present invention.

6, the composite pile according to the second embodiment of the present invention is the same as the first embodiment except that the reinforcing plate 220 and the implant file A reinforcing ring 240 is interposed between the reinforcing plate 220 and the implant files 230 to increase the strength of the connection between the reinforcing plate 220 and the implant files 230 Only the points that contain are different. That is, the second embodiment illustrates that the tip reinforcing member 200A may have a configuration including the reinforcing ring 240 further.

Here, the reinforcing ring 240 corresponds to the hole portions (see reference numerals 222 and 224 in FIG. 3) of the reinforcing plate 220 and corresponds to the hole portions 242 and 244 which function the same as the hole portions of the reinforcing plate 220 ).

The tip reinforcing member 200A of the composite pile according to the second embodiment is preferably an integral type of the implant piles 230 and the reinforcing ring 240, but is not limited thereto. For example, the reinforcing sleeve 210 of the distal end reinforcing member 200A, the reinforcing plate 220, the implant piles 230, and the reinforcing ring 240 can be integrally molded by casting. Alternatively, the reinforcement plate 220, the implant files 230, and the reinforcement ring 240 may be integrally formed by casting, and the reinforcement sleeve 210 and the reinforcement plate 220 may be welded together and integrated, Can be combined. Alternatively, the reinforcement sleeve 210 and the reinforcement plate 220 may be welded together or integrally joined or joined together by bolts, and the reinforcement plate 220 and the reinforcement ring 240 may be welded together, .

Since the composite pile according to the second embodiment is manufactured by the same or similar method as the first embodiment, a detailed description of the method of manufacturing the composite pile according to the second embodiment will be omitted.

FIG. 7 is a perspective view of a composite pile according to a third embodiment of the present invention, and FIG. 8 shows a part of a method of manufacturing a composite pile according to the first embodiment of the present invention.

As shown in FIGS. 7 and 8, the composite pile according to the third embodiment of the present invention has the same structure and functions as those of the first embodiment, Only the configuration of the hole portion where one end is coupled and the end plate 320 is engaged is different.

Each of the holes provided in the reinforcing plate 220 of the front end reinforcing member 200B has a nut member 228 screwed to the female screw hole 226 and the female screw hole 226 ). The nut member 228 is formed with a male thread for engagement with the female screw hole 226 on its outer periphery and a tensile hole 229 formed therein. The inner periphery of the tension hole 229 is fastened to the end plate 320 A female thread to which a bolt is coupled is formed.

Since the composite pile according to the third embodiment is manufactured by the same or similar method as the first embodiment, a detailed description of the method of manufacturing the composite pile according to the third embodiment will be omitted.

For reference, the composite pile according to the third embodiment is described based on the first embodiment, but the present invention is not limited to this, and may be constructed based on the second embodiment.

9 is a perspective view of a composite pile according to a fourth embodiment of the present invention.

As shown in FIG. 9, the composite pile according to the fourth embodiment of the present invention is the same as the first embodiment except that the reinforcing plate 220A has the extended tip So as to have an expanded outer circumference as compared with the reinforcing sleeve 210. [ That is, the fourth embodiment illustrates that the reinforcing plate 220A whose outer periphery is extended to the tip reinforcing member 200C can be applied.

Since the composite pile according to the fourth embodiment is manufactured by the same or similar method as the first embodiment, a detailed description of the method of manufacturing the composite pile according to the fourth embodiment will be omitted.

For reference, the composite pile according to the fourth embodiment is described as being based on the first embodiment, but it is not limited thereto, and may be constructed based on the second or third embodiment.

On the other hand, the composite pile according to the fourth embodiment may have a configuration in which the implant files 230 are excluded, depending on the conditions and the like.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

Further, the technical ideas described in the embodiments of the present invention may be performed independently of each other, or two or more may be implemented in combination with each other.

100:
150: PC steel
200:
210: Reinforcing sleeve
220, 220A: reinforcing plate
230: Implant file
240: reinforcing ring
310: Molding mold
320: end plate
330: Tensile machine

Claims (2)

Reinforcing plates 220 and 220A having a plurality of holes 222 and 224 having a female thread hole 222 and a tensile hole 224 adjacent to the female thread hole 222 are disposed along the circumferential direction, A plurality of implant piles 230 standing on the surface of the reinforcing plates 220 and 220A and a plurality of implant piles 230 interposed between the reinforcing plates 220 and 220A and the implant piles 230, And 220A and integrally formed with the implant files 230 to resist the loads acting on the implant files 230 and to hold the holes 242 and 244 corresponding to the holes 222 and 224 And a reinforcing sleeve 210 having a leading end connected to the reinforcing plates 220 and 220A so that the strength of the reinforcing sleeve 210 and the reinforcing plate 210 220, 220A) And having a well, comprising the steps of preparing the implant file 230 to a (see 200, 200A, 200C), the front end reinforcing member protruding in the distal end side direction;
The end reinforcing members 200, 200A and 200C are disposed at one end of the forming mold 310 and one end of the PC steels 150 is connected through the holes 222, 224, 242 and 244 (244) of the holes (242, 244) of the reinforcing ring (240), respectively;
An end plate 322 having insertion holes 322 corresponding to the implant files 230 and through holes 324 corresponding to the female threaded holes 222, 242 of the hole portions 222, 224, 242, The bolts are coupled to the female threaded holes 222 and 242 through the through holes 324 in a state where the implant files 230 are inserted into the insertion holes 322, 320) to the distal end reinforcing members (200, 200A, 200C);
Connecting a tensioner (330) to the other end of the PC steels (150) at the other end of the forming mold (310);
A step of putting concrete into the forming mold 310 and performing centrifugal molding in a state where the PC steels 150 having one end fixed by the end plate 320 are stretched by the stretching machine 330 / RTI >
Method of manufacturing a composite pile. By the production method according to claim 1,
A distal end reinforcing member 200, 200A including a reinforcing sleeve 210, a reinforcing plate 220, 220A, an implant pile 230, and a reinforcing ring 240, , 200C)
The PC steels 150 are buried in the inside,
Composite pile.

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