KR101754988B1 - Fixing method for pile - Google Patents

Fixing method for pile Download PDF

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Publication number
KR101754988B1
KR101754988B1 KR1020150150238A KR20150150238A KR101754988B1 KR 101754988 B1 KR101754988 B1 KR 101754988B1 KR 1020150150238 A KR1020150150238 A KR 1020150150238A KR 20150150238 A KR20150150238 A KR 20150150238A KR 101754988 B1 KR101754988 B1 KR 101754988B1
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KR
South Korea
Prior art keywords
pile
hole
ring member
wedge
wedge member
Prior art date
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KR1020150150238A
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Korean (ko)
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KR20170049760A (en
Inventor
이기환
이정훈
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이기환
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Priority to KR1020150150238A priority Critical patent/KR101754988B1/en
Publication of KR20170049760A publication Critical patent/KR20170049760A/en
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Publication of KR101754988B1 publication Critical patent/KR101754988B1/en

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/48—Foundations inserted underneath existing buildings or constructions
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/10—Deep foundations
    • E02D27/12—Pile foundations
    • E02D27/14—Pile framings, i.e. piles assembled to form the substructure
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/28—Stressing the soil or the foundation structure while forming 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

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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)
  • Piles And Underground Anchors (AREA)

Abstract

A pile (100) buried in the ground through a through hole (21) of a foundation bottom plate (20) of a structure; A ring member 200 having an insertion hole 210 in which the pile 100 is inserted and fixed and a slanting outer surface 202 having an outer diameter enlarged downward; The wedge member 200 is inserted between the inclined outer surface 202 of the ring member 200 and the through hole 21 to support the ring member 200 downward. 300); And a filler (C) filled in the through hole (21) so that the pile (100), the ring member (200) and the wedge member (300) are buried. It is possible to stably reinforce the base structure when the existing structure is enlarged.

Description

{FIXING METHOD FOR PILE}

Field of the Invention [0002] The present invention relates to a construction field, and more particularly to a pile fixing device.

If it is necessary to expand (enlarge) the size of the existing structure, such as the remodeling of the apartment, reinforcement of the foundation structure becomes a problem.

1 and 2 are process drawings for explaining a conventional additional pile construction method.

Conventionally, a method has been employed in which an additional pile 10a is installed around an existing pile 10 formed in a lower portion of a base bottom plate 20 of an existing structure 1 (Figs.

However, the conventional method has the following problems.

Assuming that the existing structure 1 has a load of 200, the two existing piles 10 inherently bear a load of 100, respectively (Fig. 1).

If the structure 2 expanded by remodeling has a load of 400, then two existing piles 10 and two additional piles 10a must each bear a load of 100.

However, in actual practice, when the additional pile is constructed by the conventional method, a larger load 120 acts on the existing pile 10 and a smaller load 80 acts on the additional pile 10a have.

In order to generate the frictional force on the ground, it is required that displacement occurs between the outer periphery of the pile and the ground due to the frictional force (frictional force between the outer periphery of the pile) and the supporting force.

However, when the additional pile is installed by the conventional method, since the enlarged structure 2 is constructed with no displacement occurring between the outer periphery of the additional pile and the ground or in a small state, the frictional force of the additional pile does not act , There is a problem that the existing pile will bear more load.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pile prior loading device capable of stably supporting a foundation structure when an existing structure is expanded and a preloading method using the same. do.

In order to solve the above problems, the present invention provides a pile 100 embedded in the ground through a through hole 21 of a foundation bottom plate 20 of a structure; A ring member 200 having an insertion hole 210 in which the pile 100 is inserted and fixed and a slanting outer surface 202 having an outer diameter enlarged downward; The wedge member 200 is inserted between the inclined outer surface 202 of the ring member 200 and the through hole 21 to support the ring member 200 downward. 300); And a filler (C) filled in the through hole (21) so that the pile (100), the ring member (200) and the wedge member (300) are buried.

The upper portion of the pile 100 located in the through hole 21 preferably has a male screw portion 101 formed on the outer circumferential surface thereof.

It is preferable that a female screw 211 is formed on the inner circumferential surface of the insertion hole 210 of the ring member 200 so as to be screwed with the male screw portion 101 of the pile 100.

The upper portion of the ring member 200 may be formed with a reinforcing portion 220 protruding upward to form a female threaded portion in the core portion so as to be screwed with the male threaded portion 101 of the pile 100.

And a double nut 230 installed to fix the ring member 200 inserted in the pile 100 in the upper and lower sides.

The inner diameter of the insertion hole 210 of the ring member 200 is preferably larger than the outer diameter of the pile 100.

The ring member 200 is preferably formed with a filling material injection hole 203 along the vertical direction.

It is preferable that a plurality of coupling mechanism insertion portions 204 are formed on the upper surface of the ring member 200 so that the ring member 200 can be rotationally driven for screw coupling.

The wedge member 300 preferably includes a plurality of engraving members 310.

The plurality of engraving members 310 may be spaced apart from each other.

The wedge member 300 has a wedge structure having a wedge structure that allows downward movement of the wedge member 300 and does not allow the wedge member 300 to be upwardly moved with respect to the inner surface of the through hole 21, It is preferable that the portion 301 is formed.

According to the present invention, there is provided a method of fixing a pile using a pile fixing device, comprising: forming a through hole (21) in a bottom bottom plate (20) of the structure; Piercing the lower ground of the through hole (21), inserting the pile (100), and injecting grout to form a pile foundation; Installing the ring member (200) on an outer periphery of the pile (100); The wedge member 300 is installed between the inclined outer surface 202 of the ring member 200 and the through hole 21 and is pressed downward to fix the pile 100 and the ring member 200 step; And a filling step of filling the inside of the through hole (21) with a filling material (C).

The present invention relates to a method for predicting load of a pile using a pile fixing device, comprising the steps of: forming a through hole (21) in a base bottom plate (20) of the structure; Piercing the lower ground of the through hole (21), inserting the pile (100), and injecting grout to form a pile foundation; Installing the ring member (200) on an outer periphery of the pile (100); Pressing the pile (100) downward by a pressurizing device to apply a preceding load; The wedge member 300 is installed between the inclined outer surface 202 of the ring member 200 and the through hole 21 and is pressed downward to fix the pile 100 and the ring member 200 step; Releasing the pressure by the pressure device; And a filling step of filling the inside of the through hole (21) with a filling material (C).

The present invention proposes a pile prior loading device and a preceding loading method which can stably reinforce the foundation structure when the existing structure is expanded.

1 and 2 are process drawings of a conventional additional pile construction method.
3 shows the embodiment of the present invention,
3 and 4 are process drawings of the first embodiment of the preceding load method.
5 is a stress distribution diagram.
6 to 8 are process drawings of a second embodiment of the preceding load method.
9 is a perspective view of the ring member;
10 is a perspective view of a coupling mechanism;
11 is a process chart of the third embodiment of the preceding load method.
12 is a longitudinal sectional view of the fixing device.
13 is a side view of the fixing device.
14 is a side view of the wedge member;

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

As shown in FIG. 3 and subsequent drawings, the preceding load method according to the present invention is basically composed of the following steps.

A through hole 21 is formed in the base bottom plate 20 supporting the load of the upper structure together with the existing pile 10 installed on the lower side and a perforation hole 30 is formed in the lower portion of the through hole 21 3).

A pile 100 such as a micro pile is installed in the through hole 21 and the punch hole 30 so that the pile 100 and the punch hole 30 are integrated by a grouting operation ).

The pile 100 is pressed downward to form a vertical displacement between the pile 100 and the ground and the upper end of the pile 100 and the base bottom plate 20 are integrated.

That is, the present invention is not limited to providing the pile 100 with respect to the base bottom plate 20, but rather is characterized in that the pile 100 is pressed downward to form a vertical displacement between the pile 100 and the ground will be.

When the existing structure is enlarged after the displacement between the pile 100 and the ground is generated, the pile 100 can exhibit the frictional force as well as the support force due to the displacement. Therefore, The load can be appropriately shared by the pile 100 and the burden of adding the load to the existing pile 10 can be eliminated or reduced.

As shown in FIG. 6 and subsequent drawings, the pile fixing device according to the present invention includes a pile 100 embedded in the ground through a through hole 21 of a base bottom plate 20 of a structure; A ring member (200) having an insertion hole (210) in which a pile (100) is inserted and fixed and which has an inclined outer surface (202) having an outer diameter enlarged downward; A wedge member 300 that is inserted between the inclined outer surface 202 of the ring member 200 and the through hole 21 to support the ring member 200 downward and whose lower width is gradually reduced as compared with the upper width; And a filler C filled in the through hole 21 so that the pile 100, the ring member 200 and the wedge member 300 are buried

The preceding loading method using a pile fixing device according to the present invention is constituted by the following process.

A through hole 21 is formed in the bottom plate 20 of the structure (Fig. 6), the lower ground of the through hole 21 is drilled to insert the pile 100, and grout is injected to form a pile base (Fig. 7).

The ring member 200 is installed on the outer periphery of the pile 100 (Fig. 7).

The pile 100 is pressed downward by a pressurizing device to apply a preceding load and a wedge member 300 (not shown) is inserted between the inclined outer surface 202 of the ring member 200 and the through- And the pile 100 and the ring member 200 are fixed to the lower side (FIG. 8).

When the pile 100 is pushed downward by a pressurizing device such as a hydraulic jack, a force to lift the pile upward is released. When the pile 100 is pushed by the ring member 200 and the wedge member 300, The pile 100 can be prevented from rising to the upper side even after the pressurizing device is removed.

Thereafter, the pressurization by the pressurizing device is released, and the inside of the through hole 21 is filled with a filling material C such as no shrinkage mortar (Fig. 8).

In addition to the effect that the pile 100 can properly share the additional load of the above-mentioned enlarged structure, it is possible to achieve a stable and simple effect of the preceding loading work.

In order to stably fill the filler after the pressurization of the pile and the installation of the fixing device are completed, it is preferable that the filler injection hole 203 is formed along the vertical direction on the ring member 200 (FIG. 9).

The pile 100 and the ring member 200 must be firmly fixed, such as by welding, screwing, or the like.

In the latter case, the male screw portion 101 is formed on the outer circumferential surface of the upper region of the pile 100 located inside the through-hole 21.

The ring member 200 can be screwed in various ways to the pile 100 of such a male thread structure.

First, a female screw 211 may be formed on the inner circumferential surface of the insertion hole 210 of the ring member 200 so as to be screwed with the male screw portion 101 of the pile 100 (FIG. 9).

In this case, when the pile 100 is fixed to the grout, the ring member 200 is rotated and the pile 100 is screwed using a separate coupling mechanism 30 or the like.

In order to facilitate such an operation, a plurality of projections 31 are formed on the upper surface of the ring member 200 so that the projecting portion 31 of the engaging mechanism 30 can be fitted so that the ring member 200 can be rotationally driven for screwing. It is preferable that the coupling mechanism insertion portion 204 is formed in a radially symmetric structure (Figs. 9 and 10).

The filling material injection hole 203 of the ring member 200 described above can also serve as the upper coupling mechanism insertion portion 204. [

Second, the upper portion of the ring member 200 may have a structure in which a reinforcing portion 220 formed with a female threaded portion protrudes upward to be screwed with the male threaded portion 101 of the pile 100 (Figs. 11 to 13 ).

This increases the area of the threaded engagement surface, so that a more stable threaded engagement structure can be achieved.

Third, the double nuts 230 may be installed to fix the ring member 200 inserted in the pile 100 on the upper and lower sides (FIG. 13).

In this case, the insertion hole 210 of the ring member 200 may or may not have a female thread structure.

Here, when the inner diameter of the insertion hole 210 of the ring member 200 is formed larger than the outer diameter of the pile 100, even if the verticality of the pile 100 is poor (even if it is tilted to one side) The effect that the fastening member 100 can be firmly fixed by the double nut 230 in a state where the fastening member 100 is inserted into the insertion hole 210 of the ring member 200 is added.

In this case, the insertion hole 210 of the ring member 200 need not necessarily have a female screw structure.

The wedge member 300 may have an integral ring-like structure or may have a structure including a plurality of engraving members 310 (Figs. 12 and 14).

In the latter case, a plurality of engraved members 310 can be structured so as to be spaced apart from each other, which adds an effect that the filler can be injected downward through an area between the plurality of engraved members 310. [

The wedge member 300 is provided on its outer surface with a wedge-shaped concave / convex portion 301 which permits downward movement of the wedge member 300 and does not allow upward movement of the wedge member 300 with respect to the inner surface of the through- It is possible to reliably prevent the pressurized pile 100 from floating (Fig. 14).

The pile fixing apparatus according to the present invention may be applied by arranging a plurality of piles in a vertical direction as required (FIG. 11).

Although the pile fixing device according to the present invention is applied to the pile prior loading method, the pile fixing device according to the present invention is not limited to the conventional pile fixing method. Can be effectively applied.

That is, in the above-described process of the preceding load applying method, only the step of pressing the pile downward by the pressurizing device can be applied as it is.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It is to be understood that both the technical idea and the technical spirit of the invention are included in the scope of the present invention.

20: base bottom plate 21: through hole
100: pile 101: male thread part
200: ring member 202: oblique outer surface
203: filler injection hole 204: engagement mechanism insertion portion
210: insertion hole 211: female thread portion
220: reinforcement part 230: double nut
300: wedge member 301: concave / convex portion
310: piece piece

Claims (13)

A pile 100 buried in the ground through a through hole 21 of a foundation bottom plate 20 of the structure;
A ring member 200 having an insertion hole 210 in which the pile 100 is inserted and fixed and a slanting outer surface 202 having an outer diameter enlarged downward;
The wedge member 200 is inserted between the inclined outer surface 202 of the ring member 200 and the through hole 21 to support the ring member 200 downward. 300);
A double nut (230) installed to fix the ring member (200) inserted into the pile (100) on the upper and lower sides;
A method of fixing a pile using a pile fixing device including a filler (C) filled in the through hole (21) so that the pile (100), the ring member (200) and the wedge member (300)
Forming a through hole (21) in the base bottom plate (20) of the structure;
Piercing the lower ground of the through hole (21), inserting the pile (100), and injecting grout to form a pile foundation;
Installing the ring member (200) on an outer periphery of the pile (100);
The wedge member 300 is installed between the inclined outer surface 202 of the ring member 200 and the through hole 21 and presses the wedge member 300 downward to fix the pile 100 and the ring member 200 step;
And a filling step of filling the inside of the through hole (21) with a filling material (C)
A male screw portion 101 is formed on an outer circumferential surface of the upper region of the pile 100 located in the through hole 21,
Wherein an inner diameter of the insertion hole (210) of the ring member (200) is larger than an outer diameter of the pile (100). delete delete delete delete delete The method according to claim 1,
And a filler injection hole (203) is formed in the ring member (200) along the vertical direction. delete The method according to claim 1,
Wherein the wedge member (300) comprises a plurality of engraving members (310). 10. The method of claim 9,
Wherein the plurality of piece members (310) are spaced apart from each other. The method according to claim 1,
The wedge member 300 has a wedge structure having a wedge structure that allows downward movement of the wedge member 300 and does not allow the wedge member 300 to be upwardly moved with respect to the inner surface of the through hole 21, (301) is formed on the pile (300). delete delete
KR1020150150238A 2015-10-28 2015-10-28 Fixing method for pile KR101754988B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150150238A KR101754988B1 (en) 2015-10-28 2015-10-28 Fixing method for pile

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Application Number Priority Date Filing Date Title
KR1020150150238A KR101754988B1 (en) 2015-10-28 2015-10-28 Fixing method for pile

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KR20170049760A KR20170049760A (en) 2017-05-11
KR101754988B1 true KR101754988B1 (en) 2017-07-07

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001207447A (en) * 2000-01-28 2001-08-03 Giken Seisakusho Co Ltd Mobile auxiliary device for press-in machine
KR100816044B1 (en) * 2007-12-18 2008-03-24 문형록 Structure lifting and supporting method by using a micro pile

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001207447A (en) * 2000-01-28 2001-08-03 Giken Seisakusho Co Ltd Mobile auxiliary device for press-in machine
KR100816044B1 (en) * 2007-12-18 2008-03-24 문형록 Structure lifting and supporting method by using a micro pile

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KR20170049760A (en) 2017-05-11

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