KR20150117791A - Coupling apparatus for non-welding of PHC pile - Google Patents

Coupling apparatus for non-welding of PHC pile Download PDF

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Publication number
KR20150117791A
KR20150117791A KR1020140043293A KR20140043293A KR20150117791A KR 20150117791 A KR20150117791 A KR 20150117791A KR 1020140043293 A KR1020140043293 A KR 1020140043293A KR 20140043293 A KR20140043293 A KR 20140043293A KR 20150117791 A KR20150117791 A KR 20150117791A
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KR
South Korea
Prior art keywords
pile
cap
seat
head
head cap
Prior art date
Application number
KR1020140043293A
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Korean (ko)
Inventor
김병철
김기웅
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김병철
김기웅
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Priority to KR1020140043293A priority Critical patent/KR20150117791A/en
Publication of KR20150117791A publication Critical patent/KR20150117791A/en

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D13/00Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • E02D13/10Follow-blocks of pile-drivers or like devices
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/223Details of top sections of foundation piles
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/226Protecting piles
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/24Prefabricated piles
    • E02D5/30Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/52Piles composed of separable parts, e.g. telescopic tubes Piles composed of segments
    • E02D5/523Piles composed of separable parts, e.g. telescopic tubes Piles composed of segments composed of segments
    • E02D5/526Connection means between pile segments
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/58Prestressed concrete piles
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00Production methods
    • E02D2250/0046Production methods using prestressing techniques
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0026Metals
    • E02D2300/0029Steel; Iron
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00Miscellaneous
    • E02D2600/20Miscellaneous comprising details of connection between elements

Abstract

The present invention relates to a weldless joint of a steel-saving PHC pile, wherein the tip cap of the upper pile and the head cap of the lower pile are in contact with each other with a spacing space through spacing retaining projections, Since the bolt is installed in the spaced space, the fixing bolt is not installed in the pile body made of concrete, so that the crack of the concrete due to the load can be prevented, and the head of the steel wire embedded in the pile is fixed to the outer side of the tip cap and the head cap So that the thickness of the seat plate can be made thin and the material cost can be reduced.
In order to achieve the above object, according to the present invention, there is provided a pile comprising: a seat plate attached to a tip of an upper pile; a reinforcement band formed to surround an outer circumferential surface of a pile tip at an edge of the seat plate; And an upper end of the seat plate is formed with a concave insertion groove along the outer circumferential surface of the pile in an inner direction of the pile. A reinforcing band formed to surround the outer circumferential surface of the pile head at an edge of the seat, and an insertion groove recessed inward of the pile along an outer circumferential surface of the pile at a lower side of the seat, A formed head cap; The end cap and the head cap are provided to be spaced apart from each other by the gap retaining protrusions. The end cap and the head cap are provided on the outer side of the head cap and the head cap, respectively. And a fastener for fastening the upper and lower piles by being fastened to the gap retaining protrusion by fixing bolts horizontally installed.

Description

Technical Field [0001] The present invention relates to a non-welding apparatus for PHC piles,

[0001] The present invention relates to a weldless joint for a steel-saving PHC pile, wherein a spacing space is formed between a leading end cap and a head cap, and the end cap and the head cap are connected using a fastener, The fixing bolt is fastened by the spacing space between the end cap and the head cap so that the bolt is not installed on the concrete pile body so that the crack of the concrete due to the decrease of the coating thickness of the PC steel wire can be prevented, The present invention relates to a steel-free PHC pile-free welded joint capable of being installed so as to be exposed to the outside, thereby reducing the thickness of the seat plate.

Generally, when a construction or civil engineering structure is to be applied to a soft ground, a pile connected to the support layer from the ground surface is used so as to secure the stability of the structure by transferring the load of the structure to the support layer.

The support layer for pile construction is located at a depth of several tens of meters from the surface of the ground. In case of piles, the pile is made up to 15 m or less in length for convenience of production and transportation. .

On the other hand, the PHC pile is manufactured by introducing the prestressed pre-tensioned concrete high-strength concrete pile fabricated by centrifugal force. The PHC pile is resistant to bending resistance, vertical force and horizontal force It has excellent features and can be constructed by using the pneumatic method, so it is widely used when it is intended to construct structures on soft ground.

In the meantime, for the coupling between the PHC piles, a tip cap and a head cap made of metal for protecting the pile are provided at the tip and the head of the pile opposed to each other, and the upper pile of the lower pile and the tip cap of the upper pile are opposed to each other. In the deployed state, the joints between the piles are made by welding around the circumference of the two caps.

However, there is a difference in quality depending on the conditions of the worksite, the weather, and the skill of the worker where the work is actually performed. Therefore, it is inevitably necessary to have a skilled welder having a high cost, There is a problem that the durability (quality deterioration) of the cap is lowered by the welding residual stress due to the long (actual working time is short). In addition, it is difficult to maintain the quality beyond a predetermined level, and thus there are problems in paying a large cost for quality control.

In view of such a problem, in Patent Document 10-0546941, an upper pile and a lower pile are connected by using a pile connection provided outside the pile while the upper pile and the lower pile are in contact with each other

However, since the bolts for fixing the pile connector are fastened to the pile body made of concrete, it is difficult to maintain the thickness of the steel wire laid inside the pile body, and the portion where the bolt is installed at the time of hoeing is easily broken.

However, since the bolts for fixing the connecting port are installed on the side of the concrete pile and are inserted into the inside of the concrete, There is a problem that cracks are easily generated in the bolt installation part.

Since the jointing apparatus used in the conventional cost-unbonded jointing method has a complicated structure, it can not be easily manufactured and constructed and the thickness of the PC steel sheathing layer in the concrete can not be maintained, so that the strength of the head and the head of the pile is lowered, There is a problem that the portion is broken.

In addition, in the conventional pile, when the tip cap and the head cap are brought into contact with each other, the head of the steel wire embedded in the pile is buried in the steel wire installation hole formed on the seat so that the tip cap does not interfere with the head cap Respectively.

As a result, the thickness of the seat is increased by the thickness of the steel wire to increase the manufacturing costs of the end cap and the head cap.

Patent No. 10-0798647 Patent No. 10-0546941

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems described above, and an object of the present invention is to provide a pile cap for a pile, The pile body is prevented from cracking due to the load because the fixing bolt is not installed on the pile body made of concrete and the head of the steel wire embedded in the pile is protruded to the outside of the end cap and the head cap The thickness of the seat plate can be made thin, and ring members having different diameters can be overlapped to manufacture the seat plate, thereby reducing the loss of materials and ultimately reducing the cost of the material. To provide a weld joint.

According to an aspect of the present invention, there is provided a pile of a pile comprising: a seat plate attached to a tip of an upper pile; a reinforcing band formed to surround an outer circumferential surface of a pile tip at an edge of the seat plate; And a spacing protrusion which is formed in the circumferential direction of the pillar in a direction of a circumferential direction of the pillar and protrudes in a downward direction of the pillar and forms a spacing space when the pillar comes into contact with the lower pile. A tip cap on which an insertion groove is formed; A reinforcing band formed to surround the outer circumferential surface of the pile head at an edge of the seat, and an insertion groove recessed inward of the pile along an outer circumferential surface of the pile at a lower side of the seat, A formed head cap; The end cap and the head cap are provided to be spaced apart from each other by the gap retaining protrusions. The end cap and the head cap are provided on the outer side of the head cap and the head cap, respectively. And a fastener for fastening the upper and lower piles by being fastened to the gap retaining projections by fixing bolts horizontally installed.

Also, the gap retaining protrusion may include an inner protrusion protruding from an inner edge of the seat plate to a lower side of the seat plate; And an outer protrusion protruded from an outer edge of the seat plate in a downward direction of the seat plate and having bolt holes formed in the width direction so that the fixing bolt can be fastened.

And a central protrusion formed between the inner protrusion and the outer protrusion at regular intervals along the circumferential direction, and a connection protrusion connecting the inner protrusion and the outer protrusion.

The fastening member may include a fastening body installed on the outer side of the end cap and the head cap and having a bolt hole formed in a horizontal direction so that the fastening bolt can be installed; And a locking protrusion protruding from an upper side and a lower side of one side of the fastener body and inserted into the insertion groove to be hooked on the outer side of the end cap and the head cap.

The sloped surface may be chamfered at an edge of an upper surface edge of the front end cap seat and a lower surface edge of a bottom surface of the seat portion of the toe cap and may be engaged with the inclined surface in a wedge- And an inclined surface is formed on the inner surface.

The upper end edge of the end cap seat plate and the lower surface edge of the seat bottom plate are chamfered at an inclined surface and an inclined surface is formed at an inner side surface of the engaging projection of the fastener so as to be engaged with the inclined surface in a wedge- .

And a locking protrusion horizontally protruding from the locking protrusion formed with the inclined surface and hooked to the end cap and the seat plate of the head cap.

Also, the head portion of the steel wire embedded in the pile is configured to be protruded to the outside of the steel wire installation hole formed in the end cap and the seat portion of the head cap, thereby reducing the thickness of the seat.

The end caps and the seat plates of the head cap are characterized in that ring members having different diameters are fitted to each other so as to overlap with each other, and a reinforcing plate is attached to one side surface of the end cap and the ring member.

And the gap retaining projection of the end cap is formed by forming the ring member higher in height than the remaining ring member.

The ring member of the head cap which abuts against the gap retaining protrusion is formed to be wider than the width of the ring member including the gap retaining protrusions to stably support the upper load transmitted through the gap retaining protrusions.

As described above, according to the present invention, since a spacing space is formed between the cap of the upper pile and the cap of the lower pile, and the fixing bolt is installed in the spacing space, the fixing bolt is inserted into the pile of concrete So that the coating thickness of the steel wire is maintained and the pile is prevented from being damaged by the load.

Also, since the pile can be manufactured with the head portion of the steel wire laid out in the inside of the pile exposed to the outside of the left side plate by the spacing space, the thickness of the left side plate can be reduced by the thickness of the steel wire head, .

In addition, it is a very useful invention that can reduce cost by reducing the loss of raw materials as much as possible by overlapping ring members having different diameters during manufacture of the seat.

Brief Description of the Drawings Fig. 1 is an exploded perspective view showing an engaged state of an upper pile and a lower pile through a pile joint device according to the present invention,
FIG. 2 is an exploded perspective view showing a state of engagement between an upper pile and a lower pile by the pile joint device according to the present invention,
3 is a sectional view showing a structure of a pile joint device according to the present invention,
FIG. 4 is a sectional view showing a state where a pile is coupled using a fastener according to a first embodiment of the present invention,
FIG. 5 is a cross-sectional view showing a state where a pile is coupled using a fastener according to a second embodiment of the present invention,
FIG. 6 is a sectional view showing a state where a pile is coupled using a fastener according to a third embodiment of the present invention,
FIG. 7 is a cross-sectional view showing a state where a pile is coupled using a fastener according to a fourth embodiment of the present invention,
8 is an exemplary view showing a state in which a fastener according to the present invention is formed into one piece;
9 is a view showing a state in which a center projection is further formed in the gap retaining projection according to the present invention,
10 is an exemplary view showing a state in which a coupling protrusion is further formed in the gap retaining protrusion according to the present invention;
11 is an exploded perspective view showing a state in which a seat plate is manufactured using ring members having diameters different from one another in the present invention,
12 is a perspective view showing a state in which a seat plate is manufactured by using ring members having diameters different from one another in the present invention,
13 is a cross-sectional view showing a state in which a seat plate is manufactured using ring members having diameters different from one another in the present invention,

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying 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.

FIG. 2 is a perspective view showing a state of engagement between an upper pile and a lower pile by a pile joint device according to the present invention. FIG. FIG. 3 is a cross-sectional view showing the structure of a pile joint device according to the present invention. FIG. 4 is a cross-sectional view showing a state where a pile is coupled using a fastener according to a first embodiment of the present invention. 2 is a cross-sectional view showing a state where a pile is coupled using a fastener according to an embodiment,

As shown in the drawing, the present invention is characterized in that it comprises a head cap 200 installed on a head of a pile 10, and a head cap 20 installed on a tip of the pile 10, when the upper pile 11 and the lower pile 12 are coupled. A tip cap 100 having a spacing protrusion 150 formed on a lower surface thereof so as to form a space between the head cap 200 and the head cap 100, The upper cap 100 of the upper pile 11 and the head cap 200 of the lower pile 12 are fastened to the upper pile 11 and the upper pile 11 by fastening to the gap holding protrusions 150 through the fixing bolts 340, And a fastener 300 for making jointing of the lower pile 12.

The end cap 100 includes a ring-shaped seat plate 110 attached to the tip of the upper pile 11 to protect the tip thereof and a ring-shaped seat plate 110 having a predetermined height from the edge of the seat plate 110 to surround the outer peripheral surface of the tip of the pile The upper pile 11 and the lower pile 12 are in contact with each other when the pile 10 is formed in the circumferential direction of the pile 10 and protrudes in a downward direction of the pile 10, And a gap holding protrusion 150 for forming a spacing space 30 between the cap cap 100 and the cap 200. The cap plate 100 is provided at an upper portion of the seat plate 110 with piles 10 are formed in the inner side of the insertion groove 130 in a concave shape.

Meanwhile, the head cap 200 includes a ring-shaped seat 210 attached to the head of the pile 10 to protect the head, and a ring-shaped seat 210 formed at a predetermined height from the edge of the seat 210, A reinforcing band 220 configured to surround the outer circumferential surface of the pile 10 and an insertion groove 230 having a concave shape inward of the pile 10 along the outer circumferential surface of the pile 10 at the lower side of the seat panel 210.

The fastener 300 includes a front end cap 100 and a fastener body 200 having a bolt hole 311 formed in a horizontal direction so as to install the fastening bolt 340, The end cap 100 is inserted into the insertion grooves 130 and 230 of the head cap 100 and protrudes from the top and bottom of one side of the fastener body 310, And a hooking protrusion 320 for hooking the cap 100 to the outside of the head cap 200.

The fastener 300 is formed in an arc shape as a whole and the upper locking protrusion 320 is inserted into the insertion groove 130 of the end cap 100 and the lower locking protrusion 320 is inserted into the head cap 100 The fixing bolts 340 fastened to the outer projections 152 of the gap retaining protrusions 150 through the bolt holes 311 of the fastener body 310 in a state of being inserted into the insertion grooves 230 of the fastener body 200, So that the pile 11 and the lower pile 12 are connected to each other.

4, the top cap 100 and the top cap 200 can be tightened tightly and tightly through the fastener 300, as shown in FIG. 4, The slant surfaces 111 and 211 are chamfered at the edges of the lower surface of the seat 200 and the edge of the seat 200. The slant surfaces 111 and 211 are fastened to each other in a wedge- The inclined surface 321 may be further chamfered on the inner surface of the engaging projection 320 of the sphere 300.

5, in order to tighten the end cap 100 and the head cap 200 more tightly and tightly through the fastener 300, the upper surface of the upper plate 100 of the end cap 100, And a bottom surface of the bottom plate 210 of the head cap 210. The bottom surface of the bottom plate 200 is formed with a plurality of fasteners 300 The slant surface 321 may be chamfered on the inner side surface of any one of the engaging protrusions 320 among the engaging protrusions 320.

The fasteners 300 are assembled into the end cap 100 and the head cap 200 through the inclined surfaces 321 in a wedge shape so that even if an error occurs during the process of joining the piles 10 in the field, And the tightening strength is improved.

6, the hanger 300 is horizontally protruded from an inclined surface 321 formed on the locking protrusion 320 to be caught by the end caps 100 and the seat panels 110 and 210 of the head cap 200, The jaw 330 can be further formed.

The fasteners are completely engaged with the end caps 110 and 210 of the end cap 100 and the head cap 200 to enable stable coupling of the piles.

As shown in FIG. 7, the locking protrusion 330 may be formed on one of the locking protrusions 320 on which the inclined surface is formed, so that the inclined surface of the seat plate and the locking protrusion can be reduced, .

As shown in FIG. 2, the fasteners 300 may be formed as three pieces or two, four, or three pieces as shown in FIG. 2, so that the end caps 100 and the cap 200 of the pile can be covered. And may be formed as one piece in a state in which any one part is not closed as shown in FIG. 8, and the upper pile 11 and the lower pile 12 And may be fastened to the end cap 100 and the head cap 200 using fixing bolts 340 from the outside.

In the case where the fastener 300 is formed as one piece, the fastener 300 is inserted into the head of the lower pile 12 in advance so that the upper pile 11 When the upper and lower piles 12 and 14 are seated on the upper portion of the lower pile 12, the fastener 300 can be raised to be installed outside the end cap 100 and the head cap 200.

The spacing protrusion 150 includes an inner protrusion 151 protruding downward from the inner edge of the seat 110 in the lower direction of the seat 110 and an inner protrusion 151 protruding from the inner edge of the seat 110 in the downward direction of the seat 110 And an outer protrusion 152 protruding from the outer surface of the fixing bolt 340 and having a bolt hole 153 formed in the width direction so that the fixing bolt 340 can be fastened.

The spacing protrusions 150 form a spacing space 30 between the top cap 100 and the left and right seats 110 and 210 of the head cap 200 when the upper pile 11 and the lower pile 12 are fastened The fastening bolt 340 can be fastened to the spacing space 30.

Since the fastening bolt 340 is fastened through the spacing space 30, the fastening bolt 340 is not installed inside the pile made of concrete in order to fix the fastening tool 300 as in the conventional art, It is possible to prevent cracking of the concrete caused by the piles and to maintain the thickness of the covering of the steel wire 20 which is laid inside the pile.

In the meantime, according to the present invention, the head portion 21 of the steel wire 20 disposed inside the pile 10 is fixed to the outside of the end cap 100 and the left and right seats 110 and 210 of the head cap 200.

That is, according to the present invention, a spacing space 30 is formed between the upper pile 11 and the lower pile 12 by the gap retaining protrusions 150, so that the head portion of the steel wire 20 21 can be protruded and fixed to the outside of the end caps 110 and 210 of the end cap 100 and the head cap 200 so that the thickness of the left and right seats 110, It is possible to reduce the thickness of the pile to a minimum thickness so that the material cost can be reduced.

In more detail, a steel wire installation hole 140 (240) is formed in the left and right seats 110 and 210 so that a steel wire 20 embedded in the pile 10 can be installed in the end cap 100 and the head cap 200, The steel wire installation holes 140 and 240 include first installation holes 141 and 241 through which the steel wire 20 is inserted and tensioning bolts (not shown) can be installed, The first and second mounting holes 141 and 241 are formed to have a relatively smaller diameter than the first mounting holes 141 and 241 and are formed to be connected to the first mounting holes 141 and 241, And second mounting holes 142 and 242 in which the jaws are formed. When the upper pile 11 and the lower pile 12 are assembled while being in contact with each other, they should be installed in the second installation holes 142 and 242 so as not to be interfered by the head 21 of the steel wire 20 In order to allow the head 21 of the steel wire 20 to be embedded therein, a locking protrusion is formed in the second installation holes 142 and 242 and at least a thickness of the head 21 of the steel wire 20 is set to be greater than the thickness of the seat panel 110, The gap between the seat panel 110 of the end cap 100 and the seat panel 210 of the head cap 200 is spaced apart from the seat panel 210 by the gap retaining protrusion 150. [ The head 21 of the steel wire 20 can be exposed to the outside of the left and right seats 110 and 210. The thickness of the seats 110 and 210 can be made thin, do.

9, the spacer 150 may further include a center protrusion 160 between the inner protrusion 151 and the outer protrusion 152 so as to more stably support the upper load, A connection protrusion 170 for connecting the inner protrusion 151 and the outer protrusion 152 can be further formed.

The center protrusions are preferably spaced apart by a predetermined distance from the steel wire installation holes 140. The connection protrusions 170 are formed radially outwardly from the inside of the pile.

11 is an exploded perspective view showing a state in which a seat plate is manufactured using ring members having different diameters in the present invention, and FIG. 12 is a view showing a state in which a seat plate is manufactured using ring members having diameters different from one another according to the present invention 13 is a cross-sectional view showing a state in which a seat plate is manufactured using ring members having diameters different from each other in the present invention,

The front end cap 100 of the present invention and the seat plates 110 and 210 of the head cap 200 are fitted to each other so that the ring members 112 and 212 having different diameters are overlapped with each other, The ring members 112 and 212 may be integrally connected to each other by attaching the ring members 113 and 213 to each other.

Since the ring members 112 and 212 are formed into a ring shape by bending the bar-shaped plate material, the loss of the material can be minimized as compared with the conventional seat plate production method in which the plate material is produced by press- So that the cost of the pile joint device can be reduced.

The reinforcing plates 113 and 213 are welded to the ring members 112 and 212 to integrally connect the ring members to each other in a superposed state and a steel wire installation hole is formed so that the steel wire can be installed .

The reinforcing plates 113 and 213 connect the ring members 112 and 212 and prevent the seat plate from being deformed when a tensile force is applied to the steel wire 20.

One of the ring members 112 has a width enough to form a steel wire installation hole 140. The ring member 112 includes a ring portion And the steel wire installation hole 240 is formed in any one of the ring members 212 of the metal members 212.

11, 12, and 13, the gap maintaining protrusion 150 of the end cap 100 may be formed so that the height of the ring member 112 is smaller than the height of the remaining ring member 112 So that the relatively protruding portion can be formed of the gap retaining protrusion 150.

The width B of the ring member 212 of the seat 200 of the head cap 200 to be brought into contact with the gap retaining protrusion 150 including the inner protrusion 151 and the outer protrusion 152 as shown in FIG. Is formed to be wider than the width A of the ring member 112 of the seat plate 110 of the end cap 100 including the gap retaining protrusions 150 to stably support the upper load transmitted through the gap retaining protrusions 150. [ .

A process of jointing a pile using the pile joint apparatus of the present invention having the above structure will now be described.

First, an excavation hole is formed in the ground, and a pile 10 is inserted into the excavation hole and fixed. At this time, the pile (10) inserted into the excavation hole is installed so that its tip is inserted into the excavation hole and the head is exposed to the outside of the excavation hole.

Thereafter, the upper pile 11 is seated on the upper portion of the lower pile 12. At this time, the end cap 100 of the upper pile 11 is seated on the head cap 200 of the lower pile 12 and the tip cap 100 of the upper pile 11 is held by the gap retaining projection 150 of the end cap 100. [ (100) and the head cap (200) of the lower pile (12) are in close contact with each other while having the spacing space (30).

A bolt hole 311 formed in the fastening hole 300 is formed by inserting the fastening hole 300 into the insertion hole 130 and 230 of the end cap 100 and the head cap 200 from the outside of the pile, And the bolt hole 153 formed in the outer protrusion 152 of the gap retaining protrusion 150 are aligned with each other and then the fixing bolt 340 is used to fasten the fastener 300 to the outer protrusion 152 of the gap retaining protrusion 150 So that the joint construction between the upper pile 11 and the lower pile 12 is completed.

At this time, the fastener 300 is fixed to the fastener body 310 in a state where the fastener 320 formed in the fastener body 310 is inserted into the end caps 100 and the insertion grooves 130 and 230 formed in the head cap 200. [ The inclined surfaces 111 and 211 formed on the end plates 110 and 230 of the end cap 100 and the head cap 100 are formed on the protrusions 320 when the bolts 340 are tightened. And the upper pile 11 and the lower pile 12 can be stably connected to each other.

At this time, the fastener 300 is fixed to the fastener body 310 in a state where the fastener 320 formed in the fastener body 310 is inserted into the end caps 100 and the insertion grooves 130 and 230 formed in the head cap 200. [ The inclined surface 321 formed on the locking protrusion 320 when the bolt 340 is tightened and the inclined surface 321 formed on one side of the end cap 100 and the side plates 110 and 230 of the head cap 200 111) 211 are brought into contact with each other to be engaged with each other in the form of a wedge, so that stable connection between the upper pile 11 and the lower pile 12 is possible.

The present invention is configured such that a spacing space 30 is formed between the top cap 100 of the upper pile 11 and the head cap 200 of the lower pile 12, The fixing bolts 340 are not installed inside the pile made of concrete, so that the coating thickness of the steel wire can be maintained and the pile can be prevented from being damaged by the load.

The piles can be manufactured in a state in which the head 21 of the steel wire 20 placed inside the pile 10 is exposed to the outside of the seat plates 110 and 210 by the spacing space 30, The thickness of the seat panels 110 and 210 can be reduced by the thickness of the head 21, thereby reducing the material cost.

In addition, if necessary, the reinforcing plate 400 can be further attached to the vicinity of the steel wire installation holes 140 and 240 to prevent deformation corresponding to the tensile force generated during manufacturing of the pile, thereby making it possible to manufacture a pile of excellent quality.

In addition, when manufacturing the seat, a plurality of ring members having different diameters are fitted so as to overlap each other, and the seat is welded through a reinforcing plate, thereby minimizing the loss of raw materials and thereby reducing the cost of materials will be.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

(10): pile (11): upper pile
(12): lower pile (20): steel wire
(21): Tofu (30): Spaced space
(100): end cap (110): seat
(111): inclined surface (112): ring member
(113): reinforcing plate (120): reinforcing band
(130): insertion groove (140): steel wire installation hole
(141): first installation hole (142): second installation hole
(150): spacing projection (151): inner projection
(152): Outer projection (153): Bolt hole
(160): central projection (170): connecting projection
(200): head cap 210:
(211): inclined surface (212): ring member
(213): reinforcing plate (220): reinforcing band
(230): insertion groove (240): steel wire installation hole
(241): first installation hole (242): second installation hole
(300): fastener (310): fastener body
(311): Bolt hole (320): Locking projection
(321): inclined surface (330): engaging jaw
(340): fixing bolt (400): reinforcing plate
(410): Steel wire installation hole

Claims (11)

  1. A reinforcing band formed so as to surround the outer circumferential surface of the tip of the pile at an edge of the upper plate; and a reinforcing band formed in a circumferential direction of the pile at the lower plate to protrude downward from the upper plate, A tip cap formed of a spacing protrusion for forming a spacing space and having an insertion groove recessed inwardly of the pile along an outer circumferential surface of the pile at an upper side of the seat;
    A reinforcing band formed to surround the outer circumferential surface of the pile head at an edge of the seat, and an insertion groove recessed inward of the pile along an outer circumferential surface of the pile at a lower side of the seat, A formed head cap;
    The top cap and the head cap are provided to be spaced apart from each other by the gap retaining protrusions so that upper and lower ends of the head cap and the head cap are fitted in the insertion grooves formed respectively in the end cap and the head cap outside the tip cap and the head cap, And a fastener for fastening upper and lower piles by being fastened to the gap retaining protrusion by a fixing bolt horizontally installed on the lower portion of the pile.
  2. The method according to claim 1,
    The spacing-
    An inner protrusion protruding from a bottom edge of the seat in a downward direction of the seat;
    And an outer protrusion protruding from the outer edge of the seat plate in the downward direction of the seat plate and having bolt holes formed in the width direction so that the fixing bolts can be fastened. .
  3. 3. The method of claim 2,
    Further comprising a center protrusion formed at predetermined intervals along the circumferential direction between the inner protrusion and the outer protrusion, and a coupling protrusion connecting the inner protrusion and the outer protrusion.
  4. The method according to claim 1,
    The fastener includes:
    A fastener body installed outside the end cap and the head cap and having a bolt hole formed in a central portion thereof so that the fastening bolt can be installed;
    And a locking protrusion protruding from an upper side and a lower side of one side of the fastener body and inserted into the insertion groove to be hooked on the outer side of the end cap and the head cap. Of welded joints.
  5. 5. The method of claim 4,
    Wherein an inclined surface is chamfered at an edge of an upper surface of the end cap seat plate and a lower surface corner of a seat bottom plate,
    And a sloped surface is formed on an inner side surface of one of the fastening holes of the fastening hole so as to be engaged with the inclined surface in a wedge shape.
  6. 5. The method of claim 4,
    A chamfered inclined surface is formed on an edge of an upper surface of the end cap seat and a lower surface edge of a seat of the head cap,
    And a sloped surface is formed on an inner side surface of the engaging projection of the fastener so as to be engaged with the inclined surface in a wedge-like shape.
  7. The method according to claim 5 or 6,
    Further comprising a locking protrusion horizontally protruding from the locking protrusion formed with the inclined surface and hooked to the end cap and the seat plate of the head cap.
  8. The method according to claim 1,
    Wherein the head of the steel wire laid in the inside of the pile is fixed so as to protrude outwardly of the steel wire installation hole formed in the end cap and the seat of the head cap to reduce the thickness of the seat. Device.
  9. The method according to claim 1,
    The end caps and the seat panels of the head cap,
    And a ring member having different diameters are fitted so as to overlap with each other, and a reinforcing plate is attached to one side surface of the ring member, and a ring member which is fitted and joined is integrally connected.
  10. 10. The method of claim 9,
    Wherein the gap retaining projection of the tip cap is formed by forming a height of the ring member higher than a height of the remaining ring member.
  11. 11. The method of claim 10,
    Wherein the ring member of the head cap to be brought into contact with the gap retaining projection is formed to be wider than the width of the ring member including the gap retaining projection to stably support the upper load transmitted through the gap retaining projection. Type joint of PHC pile.



KR1020140043293A 2014-04-11 2014-04-11 Coupling apparatus for non-welding of PHC pile KR20150117791A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200480962Y1 (en) * 2016-02-24 2016-07-29 도원산업(주) Non-welding type connector for connecting piles
KR20170106866A (en) * 2016-03-14 2017-09-22 주식회사 태산플랜트 Quick connector for phc pile post and pile construction method using that
KR20170141553A (en) * 2016-06-15 2017-12-26 주식회사 태산플랜트 Buried type quick connector for pretensioned spun high strength concrete pile post and pile construction method using that
KR102116012B1 (en) * 2019-01-11 2020-05-27 주식회사 택한 Steel pile connector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200480962Y1 (en) * 2016-02-24 2016-07-29 도원산업(주) Non-welding type connector for connecting piles
KR20170106866A (en) * 2016-03-14 2017-09-22 주식회사 태산플랜트 Quick connector for phc pile post and pile construction method using that
KR20170141553A (en) * 2016-06-15 2017-12-26 주식회사 태산플랜트 Buried type quick connector for pretensioned spun high strength concrete pile post and pile construction method using that
KR102116012B1 (en) * 2019-01-11 2020-05-27 주식회사 택한 Steel pile connector

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