KR101683616B1 - Apparatus for Connecting Steel Pile and Concrete Base, and Connecting Structure using such Apparatus - Google Patents

Apparatus for Connecting Steel Pile and Concrete Base, and Connecting Structure using such Apparatus Download PDF

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Publication number
KR101683616B1
KR101683616B1 KR1020150084193A KR20150084193A KR101683616B1 KR 101683616 B1 KR101683616 B1 KR 101683616B1 KR 1020150084193 A KR1020150084193 A KR 1020150084193A KR 20150084193 A KR20150084193 A KR 20150084193A KR 101683616 B1 KR101683616 B1 KR 101683616B1
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South Korea
Prior art keywords
steel pipe
pipe pile
head
concrete foundation
reinforcing bar
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KR1020150084193A
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Korean (ko)
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KR20150075405A (en
Inventor
오성남
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(주)스마텍엔지니어링
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/24—Prefabricated piles
    • E02D5/28—Prefabricated piles made of steel or other metals
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/01—Flat foundations
    • E02D27/08—Reinforcements for flat foundations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/24—Prefabricated piles
    • E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
    • E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/72—Pile shoes

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Foundations (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The present invention relates to a head reinforcement device installed on a head of a steel pipe pile before concrete pouring for a concrete foundation in order to construct and integrate a concrete foundation on a steel pipe pile and to use such a head reinforcement device To a structure for integrating a steel pipe pile with a concrete foundation.
In the present invention, the vertical buried reinforcing bars 82, the bottom plate 83, the support rods 84 and the horizontal top plate 81, and the bent end portions 820 of the vertical buried reinforcing bars 82 are connected to the steel pipe piles 20 And a fixing nut 282 is coupled to the bent end portion 820 at an inner side of the steel pipe pile 20. The toothed pile 20 has a structure in which the fixing nut 282 is coupled to the bent end portion 820, A reinforcing device is provided, and furthermore, a coupling structure for integrating the steel pipe pile and the concrete foundation by using such a head reinforcement device is provided.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pile reinforcing apparatus for a steel pipe pile, which forms a rigid connection with a concrete foundation, and a joint structure of a concrete foundation and a steel pipe pile using the same,

The present invention relates to a head reinforcement device installed on a head of a steel pipe pile before concrete pouring for a concrete foundation in order to construct and integrate a concrete foundation on a steel pipe pile and to use such a head reinforcement device And to a joint structure of a concrete foundation and a steel pipe pile which integrate a steel pipe pile and a concrete foundation.

 Conventionally, a steel pipe pile is buried in a concrete foundation and supports a compressive force transmitted from a superstructure through a concrete foundation in placing a concrete foundation on an upper part of a steel pipe pile installed in the ground. However, when the steel pipe pile is embedded in the concrete, the compressive force is supported only by the area corresponding to the thickness of the steel pipe pile head, and there is a great risk of causing punching failure on the concrete foundation. Therefore, it is necessary to eliminate this risk in combining steel pipe piles with concrete foundations.

Korean Patent Registration No. 10-0324104 discloses a prior art coupling structure for coupling a head of a steel pipe pile with a concrete foundation. However, this conventional technique still fails to completely solve the risk of punching failure.

Korean Registered Patent No. 10-0324104 (issued Feb. 20, 2002).

The present invention has been developed in order to overcome the problems and limitations of the related art as described above. Specifically, in supporting the compressive force transmitted from the upper structure through the concrete foundation, the steel pipe pile is embedded in the concrete foundation, It is an object of the present invention to effectively prevent occurrence of punching failure of a concrete foundation caused by supporting the compressive force only by the corresponding area.

Further, in the present invention, when vertically-embedded reinforcing bars embedded in a concrete foundation are coupled to steel pipe piles, it is possible to exhibit an improved bending resistance. If the same bending resistance as in the prior art is exhibited, And to improve the economical efficiency of construction by reducing the amount of rebar assembly work.

In order to achieve the above object, according to the present invention, there is provided a head reinforcement device installed on a head of a steel pipe pile for integrating a concrete foundation formed by a steel pipe pile and concrete placed thereon, A bottom plate installed in the inner hollow of the steel pipe pile so as to block the inner hollow of the steel pipe pile to a certain depth from the head of the steel pipe pile to limit the depth of the concrete flowing into the inside of the steel pipe pile, A support rod extending upwardly and coupled to the top of the steel pipe pile, and a horizontal top plate formed in a ring shape; The upper end of the horizontal upper plate is provided with a recess in which the upper end of the support rod is positioned. When the horizontal upper plate is placed on the upper end of the steel pipe pile, the bent upper end of the support rod is bent over the edge of the head of the steel pipe pile, Lt; / RTI > The lower end of the vertically buried reinforcing bar is formed as a bent end and penetrates from the outside of the steel pipe pile to the steel bar connecting hole formed through the head of the steel pipe pile and the fixing nut is coupled to the bent end from the inside of the steel pipe pile A head reinforcement device is provided.

In addition, the present invention provides a coupling structure in which the steel tube pile and the concrete foundation are integrated by installing the head reinforcement device of the present invention on the head of a steel pipe pile projected to the ground and being embedded in the concrete foundation.

In the head reinforcing apparatus of the present invention and the combined structure of the steel pipe pile and the concrete foundation using the same, the bent end of the vertically buried reinforcing bar is threadedly engaged with the adjusting nut and then penetrates through the reinforcing bar from the outside of the steel pipe pile So that the position of the vertically buried reinforcing bar can be made further away from the outer surface of the steel pipe pile by the rotation of the adjusting nut.

In the present invention, the diameter of the cylindrical reinforcing bar made by the vertical buried reinforcing bars, which are combined with the steel pipe pile and embedded in the concrete foundation, is larger than the diameter of the steel pipe pile. Accordingly, in the present invention, the resistance moment with respect to the bending moment load exerted at the joint portion between the steel pipe pile and the concrete foundation becomes larger, and accordingly, the amount of the vertical buried steel to be buried in the concrete foundation can be reduced, Improvement in workability, and economical construction can be achieved.

According to the present invention, in supporting the compressive force transmitted from the upper structure through the concrete foundation in the state where the steel pipe pile is embedded in the concrete foundation, a horizontal upper plate arranged horizontally is installed on the head of the steel pipe pile, Since the compressive force is supported by the large area of the upper plate, punching failure of the concrete foundation can be effectively prevented.

In addition, in the present invention, since the bent ends of the vertically buried reinforcing bars embedded in the concrete foundation are coupled to the steel pipe piles with passing through the horizontal top plate, the vertical reinforcing bars can be stably maintained in the vertical state until they are embedded in the concrete foundation The pulling resistance of the vertical reinforcing bars can be effectively exerted, the flexural strength is further increased, and the workability is greatly improved. Particularly, since the present invention has a mechanical coupling structure between a steel pipe pile and a bent end, it is possible to reduce the length required for installing the vertical reinforcing steel vertically, thereby reducing the material cost and improving the economical efficiency of construction .

According to the present invention, in the state that the head reinforcement device is installed on the head of the steel pipe pile, since the concrete is installed so that the head of the head reinforcement device and the head of the steel pipe pile are embedded in the concrete, So that an effect of exhibiting a large pulling resistance force is exhibited.

Further, since the vertical reinforcing steel reinforced with the head of the steel pipe pile and embedded in the concrete foundation can be stably maintained in the vertical state by the joint, the pulling resistance of the vertical reinforcing steel can be effectively exhibited , The effect that the flexural strength exerted in the coupling between the steel pipe pile and the concrete foundation is further increased.

1 is a schematic exploded perspective view showing a structure in which a head reinforcement device is installed at an upper end of a steel pipe pile in the present invention.
2 is a schematic perspective view showing a state after the head reinforcement device is installed on the upper end of the steel pipe pile according to the present invention.
3 is a schematic cross-sectional view taken along the line AA of FIG. 2 showing a structure in which the upper end of a steel pipe pile of the present invention equipped with a head reinforcement device is embedded in a concrete foundation.
4 is a schematic cross-sectional view taken along line BB of FIG. 2 showing a structure in which the upper end of a steel pipe pile of the present invention having a head reinforcement device is embedded in a concrete foundation.
Figure 5 is a schematic enlarged view of the circle G portion of Figure 3;
FIG. 6 is a schematic enlarged view corresponding to FIG. 5 showing a state where a bent end is joined to a steel pipe pile by an adjusting nut and a fixing nut.
7 is a schematic cross-sectional view for explaining a reaction force for supporting a vertical load in a joint structure of a concrete foundation and a steel pipe pile according to the present invention.
FIG. 8 is a schematic exploded perspective view corresponding to FIG. 1 showing a head reinforcement device in which a horizontal top plate is divided in a head portion of a steel pipe pile, according to another embodiment of the present invention.
9 is a schematic coupled perspective view of an alternative embodiment shown in Fig.
10 is a schematic cross-sectional view taken along line EE in Fig.
11 is a schematic cross-sectional view at the line FF position in Fig.
12 is a schematic enlarged view of the circle D portion of FIG.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Although the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that the technical idea of the present invention and its essential structure and operation are not limited thereby. In describing the present invention, some of the constituent elements corresponding to the prior art are given the same reference numerals as those used in describing the prior art.

1 and 2 are a schematic exploded perspective view (FIG. 1) and a combined perspective view (FIG. 1) showing a configuration in which a head reinforcement device 80 is installed on the upper end or head portion of a steel pipe pile 20 according to the present invention 2 are shown. 3 and 4 are schematic cross-sectional views showing a structure in which the upper end of a steel pipe pile 20 provided with a head reinforcement device 80 is embedded in a concrete foundation C to be integrated with each other. 4 is a schematic cross-sectional view at the position of the line AA of the vertical reinforcing bar 82, that is, the position at which the vertical buried reinforcing bars 82 are coupled to the horizontal top plate 81, A schematic cross-sectional view at the engaged position is shown. FIG. 5 is a schematic enlarged view of the circle G portion of FIG. 3, and FIG. 6 is an enlarged view corresponding to FIG. 5, showing a bent end portion 820 of the vertical buried reinforcing bar 82 by an adjusting nut and a fixing nut. 3 is a schematic enlarged view of the circle G portion of FIG. 3 showing the state where the position coupled to the steel pipe pile 20 is varied.

A head reinforcement device 80 that is coupled to a head of a steel pipe pile 20 for joining a steel pipe pile 20 and a concrete foundation C includes a vertical buried reinforcing bar 82 embedded in a concrete foundation C, In order to limit the depth of the concrete flowing into the inside of the steel pipe pile 20, it is installed in the inner hollow of the steel pipe pile 20 so as to block the inner hollow of the steel pipe pile 20 to a certain depth from the head of the steel pipe pile 20 A support bar 84 coupled to the bottom of the bottom plate 83 and extending upwardly and a horizontal top plate 81 installed on the top of the bottom of the steel pipe pile 20, .

In order to limit the inflow depth of the concrete, when the concrete is laid for the construction of the concrete foundation C, the poured concrete is introduced into the hollow portion of the steel pipe pile 20, And a bottom plate 83 made of a plate material interrupting the inner hollow of the upper and lower plates. The bottom plate 83 may be provided by a support rod 84 made of a rod member. In the embodiment of the present invention shown in the drawing, the lower end of the support rod 84 is bent toward the hollow portion of the steel pipe pile 20, and the bottom plate 83 is placed on the bent end of the support rod 84 Lt; / RTI > A hole 830 is formed in the bottom plate 83 as illustrated in the figure so that the bottom plate 83 is placed on the bent end of the support rod 84 with the support rod 84 passing through the hole 830 Is preferable for the installation of the stable bottom plate 83. [ However, the coupling structure of the lower end of the support rod 84 and the bottom plate 83 is not limited to this and can be modified.

The horizontal upper plate 81 is a plate member having a ring shape to be placed on the upper edge of the steel pipe pile 20, that is, on the head of the steel pipe pile 20 so as to cross the steel pipe pile 20. [ A part of the width of the horizontal upper plate 81 encircles the hollow portion of the steel pipe pile 20 and the remaining width of the steel pipe pile 20 in the horizontal direction 81, As shown in FIG. At the outer edge of the horizontal upper plate 81 is formed a recess 811 in which the upper end of the support bar 84 is located. The support rod 84 can be installed in a state where the horizontal upper plate 81 is placed on the upper end of the steel pipe pile 20. Since the bent portion of the upper end of the support rod 84 is located in the recess 811, 20 is prevented from horizontally moving and rotating, and thus, the originally laid state is maintained constantly.

The vertical buried reinforcing bars 82 embedded in the concrete foundation C are installed vertically with the lower ends of the reinforced reinforcing bars 82 engaged with the upper ends of the steel pipe piles 20. The lower end of the vertical buried reinforcing bar 82 is bent to form a bent end portion 820. The bent end portion 820 is fitted into a reinforcing bar coupling hole 28 formed through the head of the steel pipe pile 20, ) In a mechanical manner. In particular, the bent end portion 820 is fitted into the reinforcing bar coupling hole 28 from the outside of the steel pipe pile 20. [ Therefore, when the vertical buried reinforcing bars 82 are positioned outside the steel pipe pile 20 and a plurality of the vertical buried reinforcing bars 82 are arranged in parallel to form a cylindrical shape, the diameter of the vertical buried reinforcing bars 82 on the cylindrical shape is And becomes larger than the outer diameter of the steel pipe pile 20. The vertical buried reinforcing bar 82 functions to transmit the bending moment load transmitted from the upper structure through the concrete foundation C to the steel pipe pile 20. In the present invention, The bent end portion 820 of the steel pipe pile 20 is fitted into the reinforcing bar coupling hole 28 of the steel pipe pile 20 from the outside of the steel pipe pile 20 so that the diameter of the cylindrical shape formed by the vertically- 20, and therefore the resistance moment with respect to the bending moment load becomes larger. As the resistance moment is increased, the amount of the vertical buried reinforcing bar 82 to be buried in the concrete foundation C can be reduced correspondingly, thereby reducing the material cost and improving the workability. .

As shown in the drawing, the bent end portion 820 of the vertical buried reinforcing bar 82 is formed with a threaded portion. The bent end portion 820 penetrates through the adjusting nut 281 while being screwed into the adjusting nut 281, And the fixing nut 282 is coupled to the bent end portion 820 at the inside of the steel pipe pile 20. [ 6, the position of the vertically-buried reinforcing bar 82 can be made further away from the outer surface of the steel pipe pile 20 by rotating the adjusting nut 281, The diameter of the cylindrical shape formed by the vertical buried reinforcing bar 82 becomes larger. That is, by rotating the adjusting nut 281, the cylindrical diameter of the vertical buried reinforcing bar 82 can be easily adjusted to a required degree.

Particularly, the adjustment nut 281 also functions to control the depth of the bent end portion 820 inserted into the steel pipe pile 20 through the reinforcing bar coupling hole 28. That is, the end of the bent end portion 820 is prevented from being excessively projected from the inside of the steel pipe pile 20. [ By controlling the insertion depth of the bent end portion 820, the diameter of the cylindrical reinforcing bar made of the vertical buried reinforcing bar 82 can be kept constant. It is also possible to form the screw portion at the bent end portion 820 in place of the adjusting nut 281 when only the insertion depth control of the bent end portion 820 is intended, Portion of the reinforcing bar 28 may be left to control the depth to be inserted into the reinforcing bar 28. [

As described above, in the present invention, since the bent end portion 820 of the vertical buried reinforcing bar 82 is coupled with the steel pipe pile 20 in a mechanical manner (through the penetration of the reinforcing bar coupling and the coupling using the nut) The vertical reinforcing steel bar 82 can stably maintain the vertical installation state until the vertical reinforcing steel bar 82 is embedded in the steel pipe pile 20 and the steel pipe pile 20 and the concrete foundation C And the workability is also greatly improved. [0052] The present invention is also directed to a method of manufacturing a semiconductor device, Particularly, the mechanical coupling between the steel pipe pile 20 and the bent end portion 820 makes it possible to reduce the length required for vertically installing the vertical reinforcing bar 82, that is, the fixing length, It has advantages of reduction of material cost and improvement of economical efficiency of construction. In addition, since the shape of the cylindrical reinforcing bar made of the vertical reinforcing bar 82 can be firmly maintained, the shape of the cylindrical reinforcing bar can be improved due to vibration or external impact generated during the concrete pouring for the concrete foundation C It is possible to prevent the position of the vertical reinforcing bar 82 from being changed. Accordingly, it is not necessary to further adjust the position of the vertical reinforcing bars 82, and the workability and economical efficiency are improved.

As illustrated in the figure, the transverse band bars 89 may be joined to enclose a plurality of vertical buried reinforcing bars 82 arranged in a cylindrical shape. As described above, in the present invention, since the shape of the cylindrical reinforcing bar made of the vertical reinforcing bars 82 is firmly maintained, it is possible to prevent the lateral bars It is possible to join the vertical reinforcing bars 89 to the vertical buried reinforcing bars 82 and thus to avoid the inconvenience of cast iron roots in the concrete foundation C which may be caused by the presence of the lateral straining bars 89 An advantageous effect is exerted.

When the head reinforcement device 80 having the above structure is installed on the head portion of the steel pipe pile 20, the concrete base C is installed with concrete as shown in FIGS. 3 and 4. That is, the concrete foundation C is formed so that the head portion of the steel pipe pile 20 protruding above the ground and the vertical embedded reinforcing bar 82 of the head reinforcing apparatus 80 are embedded. At this time, the poured concrete flows into the hollow interior of the steel pipe pile 20 and is filled into the steel pipe pile 20 upwardly of the bottom plate 83. Thus, a head reinforcing apparatus 80 is installed on the head of the steel pipe pile 20, and the head of the steel pipe pile 20 and the head reinforcing apparatus 80 are embedded in the concrete foundation C to form an integral body. Therefore, a firm connection between the concrete foundation C and the steel pipe pile 20 can be achieved, thereby exhibiting a large pulling resistance.

7 is a schematic cross-sectional view briefly showing the state shown in FIG. 3 in order to explain the reaction force for supporting the vertical load in the joint structure of the concrete foundation C and the steel pipe pile 20 according to the present invention . The steel pipe pile 20 supports the compressive load P transmitted from the upper structure through the concrete foundation C in a state where the steel pipe pile 20 is embedded in the concrete foundation C, When the steel pipe pile 20 is simply buried without the steel pipe pile 20, there is a great risk that punching failure will be caused in the concrete foundation C because the steel pipe pile 20 supports the compressive force only by the area corresponding to the thickness of the head of the steel pipe pile 20. [ However, in the present invention, a horizontal upper plate 81 having a width and arranged horizontally is installed on the head portion of the steel pipe pile 20, and a bearing force P1 for compressive load is exerted on a large area of the horizontal upper plate 81 . Therefore, there is an advantage that the punching failure of the concrete foundation C that can occur in the conventional art as described above can be effectively prevented.

In the present invention, when the concrete is filled in the steel pipe pile 20, the bent end portion 820 protruding into the steel pipe pile 20 is embedded in the concrete, and the bent end portion 820 is also held by the bearing force P2 ). Furthermore, the supporting rod 84 also exerts a supporting force P3 by the tensile force. Therefore, the present invention has an advantage that the compression force P is much superior to that of the prior art.

In the present invention, the horizontal upper plate 81 has a ring shape. However, in carrying out the present invention, the horizontal upper plate 81 may be used in a circumferential direction.

8 is a schematic exploded perspective view corresponding to FIG. 1 showing a head reinforcing apparatus 80 in which a horizontal upper plate 81 is divided into parts is installed on the head of a steel pipe pile 20. FIG. 9 There is shown a schematic combined perspective view of an alternative embodiment shown in Fig. 10 and 11 are schematic views showing the construction in which the upper end of the steel pipe pile 20 provided with the head reinforcing apparatus 80 according to the modified embodiment of FIGS. 8 and 9 is embedded in the concrete foundation C, Figure 10 shows a schematic cross-sectional view at line EE in Figure 9, and Figure 11 shows a schematic view of the position of the line FF of Figure 9, i.e., Sectional view is shown. Fig. 12 shows a schematic enlarged view of the circle D portion of Fig.

In the embodiment described with reference to FIGS. 1 to 7, the horizontal top plate 81 has a circular ring shape with a width, but in the case of the modified embodiment shown in FIGS. 8 to 12, And a plurality of arcuate members are arranged at intervals along the circumference of the steel pipe pile 20. [ When the horizontal upper plate 81 is provided in a plurality of divided shapes, the upper end of the support rod 84 is spaced apart from the horizontal upper plate 81, that is, at a position where the horizontal upper plate 81 is not present, ). ≪ / RTI >

In the embodiment shown in FIGS. 1 to 7, the vertical buried reinforcing bar 82 is located outside the horizontal upper plate 81. However, as shown in FIG. 8 to FIG. 12, It is preferable that the vertical buried reinforcing bar 82 is vertically installed with its lower end passing through the horizontal upper plate 81. For this, a reinforcing bar hole 810 is formed in the horizontal top plate 81, and a lower end of the vertically embedded reinforcing bar 82 passes through the reinforcing bar hole 81. When the horizontal upper plate 81 is installed on the head portion of the steel pipe pile 20, the horizontal upper plate 81 is formed by the steel pipe pile 20 as seen from the vertical direction, Quot; inner width portion ", and "outer width portion" located outside the steel pipe pile 20. [ The vertical buried reinforcing bar 82 passes through the outer width portion of the horizontal top plate 81. [ That is, the reinforcing bar hole 810 is formed at the outer width portion of the horizontal top plate 81.

8 to 12, the diameter of the cylindrical reinforcing bar made by the vertical buried reinforcing bar 82 is still smaller than the outer diameter of the steel pipe pile 20 even when the horizontal top plate 81 is divided, Becomes larger.

In the case of using the divided horizontal top plate 81, since the bent end portion 820 of the vertical buried reinforcing bar 82 is coupled to the steel pipe pile 20 in a state of passing through the horizontal top plate 81, The vertical reinforcing steel bar 82 can stably maintain the vertical installation state until it is buried in the foundation C so that the pulling resistance of the vertical reinforcing steel bar 82 can be effectively exerted, Not only the flexural strength exerted in the bonding between the concrete bases C is further increased, but also the workability is greatly improved. 8 to 12 are the same as those of the embodiments of FIGS. 1 to 7 described above, and thus the repetitive description thereof will be omitted.

20: Steel pipe pile
80: Head restraint system
81: Horizontal top plate
82: Vertically embedded reinforcing bars
83: bottom plate
84: support rod

Claims (3)

A head reinforcement device (80) installed at a head of a steel pipe pile (1) for integrating a concrete foundation (C) formed by a steel pipe pile (1)
A vertical buried reinforcing bar 82 embedded in a concrete foundation C and a reinforced concrete reinforcing bar 82 having a predetermined depth from the head of the steel pipe pile 20 to limit the depth of concrete flowing into the steel pipe pile 20. [ A bottom plate 83 installed in the hollow of the steel pipe pile 20 so as to block the inner hollow and a support rod 84 connected to the bottom plate 83 and extending upward, And a horizontal top plate 81 which is installed over the head and is in the form of a ring,
A part of the width of the horizontal upper plate 81 is eroded into the hollow portion of the steel pipe pile 20 and the rest of the width in the horizontal direction 81 is located outside the steel pipe pile 20, Is placed on the head of the steel pipe pile 20;
A concave portion 811 is formed at the outer edge of the horizontal upper plate 81 where the upper end of the support rod 84 is positioned. The horizontal upper plate 81 is fixed to the upper end of the steel pipe pile 20, The bent upper end is placed over the edge of the head portion of the steel pipe pile 20 and the bent upper end of the support bar 84 is positioned in the recess 811. After the support rod 84 is mounted on the steel pipe pile 20, The upper plate 81 is restrained from being horizontally moved and rotated while being placed on the upper end of the steel pipe pile 20 so that the upper plate 81 continuously maintains the original state thereof;
A plurality of vertical buried reinforcing bars 82 are arranged in a cylindrical shape and are coupled to the steel pipe pile 20. The lower end of the buried reinforcing bars 82 is formed by a bent end portion 820, The end portion 820 passes through the steel pipe pile 20 while passing through the reinforcing bar coupling hole 28 formed through the head of the steel pipe pile 20 from the outside of the steel pipe pile 20 while being screwed to the adjustment nut 281, The fixing nut 282 is coupled to the bent end 820 so that the diameter of the cylindrical shape in which the vertical buried reinforcing bars 82 are arranged is larger than the outer diameter of the steel pipe pile 20;
The vertical buried reinforcing bar 82 is made to be in a designed position by the rotation of the adjusting nut 281 or the position of the vertical buried reinforcing bar 82 is further moved away from the outer surface of the steel pipe pile 20, And the diameter of the cylindrical shape of the cylindrical shape is increased.
delete A joint structure of a steel pipe pile (1) and a concrete foundation (C) in which a head of a steel pipe pile (1) protruded to the ground is embedded in a concrete foundation (C)
A head reinforcement device 80 for unifying with the concrete foundation C is installed on the head of the steel pipe pile 1,
The head reinforcing apparatus 80 includes a vertically buried reinforcing bar 82 embedded in a concrete foundation C and a reinforcing bar 82 extending from the head of the steel pipe pile 20 in order to limit the depth of concrete flowing into the inside of the steel pipe pile 20. [ A bottom plate 83 installed at the inner hollow of the steel pipe pile 20 so as to block the inner hollow of the steel pipe pile 20 to a depth and a support bar 84 connected to the bottom plate 83 at the lower end and extending upward, And a horizontal top plate 81 installed over the head of the steel pipe pile 20 and shaped like a ring;
A part of the width of the horizontal upper plate 81 is eroded into the hollow portion of the steel pipe pile 20 and the rest of the width in the horizontal direction 81 is located outside the steel pipe pile 20, Is placed on the head of the steel pipe pile 20;
A concave portion 811 is formed at the outer edge of the horizontal upper plate 81 where the upper end of the support rod 84 is positioned. When the horizontal upper plate 81 is placed on the upper end of the steel pipe pile 20, The bent upper end of the supporting rod 84 to which the supporting rod 84 is coupled is pushed over the edge of the head of the steel pipe pile 20 and the bent upper end of the supporting rod 84 is positioned in the recess 811, Is installed on the steel pipe pile 20, the horizontal top plate 81 is restrained from being horizontally moved and rotated in a state of being placed on the upper end of the steel pipe pile 20, so that the horizontal top plate 81 is kept in the original position continuously;
A plurality of vertical buried reinforcing bars 82 are arranged in a cylindrical shape and are coupled to the steel pipe pile 20. The lower end of the buried reinforcing bars 82 is formed by a bent end portion 820, The end portion 820 passes through the steel pipe pile 20 while passing through the reinforcing bar coupling hole 28 formed through the head of the steel pipe pile 20 from the outside of the steel pipe pile 20 while being screwed to the adjustment nut 281, The fixing nut 282 is coupled to the bent end 820 so that the diameter of the cylindrical shape in which the vertical buried reinforcing bars 82 are arranged is larger than the outer diameter of the steel pipe pile 20;
The vertical buried reinforcing bar 82 is designed to be in the designed position by the rotation of the adjusting nut 281 or to be further away from the outer surface of the steel pipe pile 20 to design the cylindrical diameter in which the vertical buried reinforcing bars 82 are arranged The concrete is filled in the hollow of the steel pipe pile 20 to the upper side of the bottom plate 83 by the concrete for constructing the concrete foundation C and the concrete is filled in the hollow inside of the steel pipe pile 20, Wherein a vertical buried reinforcing bar (82) of the device (80) is embedded in a concrete foundation (C).
KR1020150084193A 2015-06-15 2015-06-15 Apparatus for Connecting Steel Pile and Concrete Base, and Connecting Structure using such Apparatus KR101683616B1 (en)

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