KR101738126B1 - Steel pipe micro pile and construction method for foundation using the same - Google Patents

Steel pipe micro pile and construction method for foundation using the same Download PDF

Info

Publication number
KR101738126B1
KR101738126B1 KR1020150086627A KR20150086627A KR101738126B1 KR 101738126 B1 KR101738126 B1 KR 101738126B1 KR 1020150086627 A KR1020150086627 A KR 1020150086627A KR 20150086627 A KR20150086627 A KR 20150086627A KR 101738126 B1 KR101738126 B1 KR 101738126B1
Authority
KR
South Korea
Prior art keywords
steel pipe
pipe member
engaging portion
extended
uppermost
Prior art date
Application number
KR1020150086627A
Other languages
Korean (ko)
Other versions
KR20160149514A (en
Inventor
이광영
Original Assignee
(주)엘씨씨
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)엘씨씨 filed Critical (주)엘씨씨
Priority to KR1020150086627A priority Critical patent/KR101738126B1/en
Publication of KR20160149514A publication Critical patent/KR20160149514A/en
Application granted granted Critical
Publication of KR101738126B1 publication Critical patent/KR101738126B1/en

Links

Images

Classifications

    • 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
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • 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
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E02D5/805—Ground anchors with deformable anchoring members
    • 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
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E02D5/808—Ground anchors anchored by using exclusively a bonding material
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds

Abstract

The present invention relates to a cap member (110); A lower end engaging portion 101 and an upper end engaging portion 102 of a screw connection structure are formed and the stopper member 110 is screwed on the lower end engaging portion 101 to be closed, 103 formed on both ends thereof; The lower end engaging portion 201 and the upper end engaging portion 202 of the threaded engaging structure are formed and the lower end engaging portion 201 is formed at the upper end engaging portion 102 of the end steel pipe member 100 or the other end portion of the steel pipe member 200a A plurality of extended steel pipe members (200) coupled to the upper end engagement portion (202); And a base joining member 300 coupled to the upper joining portion 102 of the uppermost steel pipe member 200b installed at the uppermost end of the plurality of the steel pipe members 200 to be coupled with the foundation structure By providing a steel pipe microfabricated by a steel pipe to obtain excellent workability and structural stability.

Description

[0001] STEEL PIPE MICRO PILE AND CONSTRUCTION METHOD FOR FOUNDATION USING THE SAME [0002]

TECHNICAL FIELD The present invention relates to a basic field of civil engineering and construction, and more particularly, to a steel pipe micro pile and a basic construction method using the same.

A micro pile generally refers to a small diameter file (generally having a diameter of 300 mm or less). Since a foundation structure using the micro pile has a merit that it can support a large load as compared with a small space, It is mainly applied to the conditions (underground of buildings) where large equipment can not enter due to restrictions.

However, the conventional microfilming method has the following problems.

First, since the conventional microfibers generally have a steel rod structure, a separate hose is required for grouting, which results in poor workability and is not excellent in the sectional structure after construction.

Second, when it is necessary to work in the basement to reinforce the foundation of existing buildings, it is difficult to insert long microfiles at once.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a steel pipe micro pile having excellent workability and structural stability, and a basic construction method using the same.

In order to solve the above-described problems, the present invention provides a cap member 110; A lower end engaging portion 101 and an upper end engaging portion 102 of a screw connection structure are formed and the stopper member 110 is screwed on the lower end engaging portion 101 to be closed, 103 formed on both ends thereof; The lower end engaging portion 201 and the upper end engaging portion 202 of the threaded engaging structure are formed and the lower end engaging portion 201 is formed at the upper end engaging portion 102 of the end steel pipe member 100 or the other end portion of the steel pipe member 200a A plurality of extended steel pipe members (200) coupled to the upper end engagement portion (202); And a base joining member 300 coupled to the upper joining portion 102 of the uppermost steel pipe member 200b installed at the uppermost end of the plurality of the steel pipe members 200 to be coupled with the foundation structure And presents a steel pipe micro file.

It is preferable that a protrusion 120 is formed on the outer circumference of the steel pipe member 100.

It is preferable that the protruding portion 120 is formed by a reinforcing bar of a helical structure surrounding the outer circumference of the steel pipe member 100.

The lower end engaging portion 101 of the end steel pipe member 100 is formed in a male screw structure formed on the outer periphery of the end steel pipe member 100 and the engaging groove 111 having a female thread structure is formed on the stopper member 110 .

The upper end joint portion 102 of the end steel pipe member 100 is a male screw structure formed on the outer periphery of the end steel pipe member 100 and the lower end engaging portion 201 of the extended steel pipe member 200 is formed of a non- The upper end coupling portion 102 of the end steel pipe member 100 and the lower end coupling portion 201 of the extended steel pipe member 200 are formed by a central coupler 400 having a female thread structure, . ≪ / RTI >

The lower end engaging portion 201 of the extended steel pipe member 200 is a male screw structure formed on the outer periphery of the extended steel pipe member 200. The upper end of the steel pipe member 100 And a reinforcing portion 150 of a female screw structure having a larger outer periphery and an inner periphery on the inner periphery of the upper steel pipe member 100. The upper end of the upper steel pipe member 100 is screwed with the lower end engaging portion 201 of the extended steel pipe member 200, The engaging portion 102 is preferably formed by a female screw structure formed on the inner periphery of the reinforcing portion 150.

The lower end engaging portion 201 of the extended steel pipe member 200 is formed to have a gradually narrowed outer periphery toward the upper end of the extended steel pipe member 200 and the upper end engaging portion 102 Is preferably formed to have a structure in which the inner periphery gradually narrows toward the lower portion of the steel pipe member 100.

And a second extended steel pipe member 200a coupled to an upper portion of the extended steel pipe member 200. The upper end of the extended steel pipe member 200 is formed with the same The upper end fitting portion 202 having the same structure as the upper end fitting portion 102 of the distal end steel pipe member 100 is formed by forming the reinforcing portion 250 of the structure of the upper end of the second steel pipe member 200a, It is preferable that a lower end engaging portion 201a having the same structure as the lower end engaging portion 201 of the extended steel pipe member 200 is formed to engage with the upper end engaging portion 202 of the extended steel pipe member 200. [

The upper joint part 102 of the extended steel pipe member 200 is a male screw structure formed on the outer periphery of the extended steel pipe member 200. The base joint member 300 includes a steel rod 310 having a male screw structure, An upper female threaded portion 502 is formed at an upper portion thereof so as to engage with the steel rod 310 and a lower female threaded portion 502 is formed at an upper portion thereof with an upper end engaged portion 310 of the uppermost steel pipe member 200b, The upper coupler 500 further includes an upper coupler 500 having a lower female threaded part 501 to be coupled to the upper end coupling part 102 of the uppermost steel pipe member 200b, It is preferable that the base joint member 300 is engaged.

According to the present invention, there is provided a foundation method using the steel pipe micropile, comprising the steps of: forming a perforation hole (1) in a ground; Inserting the plug member 110 and the steel pipe member 100 into the perforation hole 1 so that the upper end fitting portion 102 of the steel pipe member 100 is exposed on the ground; The lower end fitting portion 201 of the extended steel pipe member 200 is engaged with the upper end fitting portion 102 of the steel pipe member 100 and inserted into the perforation hole 1, Exposing the top engagement portion 102 to the ground; The lower end fitting portion 201 of the second extended steel pipe member 200a is engaged with the upper end fitting portion 102 of the extended steel pipe member 200 and inserted into the perforation hole 1, 200a) is exposed to the ground; Allowing the upper joining portion 102 of the uppermost end steel pipe member 200b to be exposed to the ground by repeating the extension joining step; A grout injection step of injecting grout into the hollow of the steel pipe microfiber; And a foundation installation step of installing the foundation joint member (300) on the upper joint part (102) of the uppermost end steel pipe member (200b) after completion of the grout injection.

The grout injection step may include a step of forming a steel pipe connecting part 610 having a female thread structure at the bottom and injecting grout injecting part 620 and air discharging part 630 to communicate with the hollow of the uppermost steel pipe member 200b Preparing a device (600); Installing the injection device (600) on the upper joint part (102) of a male screw structure formed on the upper periphery of the upper end of the uppermost steel pipe member (200b); Installing a packer (10) in an area between an upper end of the uppermost end steel pipe member (200b) and an inner periphery of the perforation hole (1); And injecting grout into the hollow of the steel pipe microfabric by the injection device 600. In the step of installing the grout, after the completion of the injection of the grout, the upper end connecting portion of the upper end steel pipe member (200b) And removing the injection device 600 from the base member 102 and installing the base joint member 300.

It is preferable that the end steel pipe member 100 is disposed in the rock layer b.

The present invention provides a steel pipe microfiber excellent in workability and structural stability and a basic construction method using the same.

1 shows an embodiment of the present invention,
1 is a sectional view of a first embodiment of a steel pipe microfiber.
2 is a sectional view of a first embodiment of a tip steel pipe member;
3 is a sectional view of a first embodiment of an extended steel pipe member;
4 is a cross-sectional view of a push type stopper member.
5 is a sectional view of a ground-stopper member;
6 is a sectional view of the center coupler.
7 is a sectional view of the upper coupler;
8 is a sectional view of a second embodiment of a tip steel pipe member.
9 is a sectional view of a second embodiment of a steel pipe microfiber.
10 to 15 are process drawings of the foundation method.
16 is a sectional view of a third embodiment of a tip steel pipe member.
17 is a sectional view of a second embodiment of an extended steel pipe member.
18 is a sectional view of the lower end engaging portion of the steel pipe member.
19 is a cross-sectional view of the upper fitting portion of the steel pipe member.
20 is a cross-sectional view of the steel pipe member in the engaged state;

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

1 and 2, the steel pipe micro pile according to the present invention basically comprises a plug member 110; The lower end engaging portion 101 and the upper end engaging portion 102 of the screw connection structure are formed and the stopper member 110 is screwed on the lower end engaging portion 101 to close the outlet hole 103 for the outflow of the grout, (100); The lower end engaging portion 201 and the upper end engaging portion 202 of the threaded engaging structure are formed and the lower end engaging portion 201 is engaged with the upper end engaging portion 102 of the front end steel pipe member 100 or the upper end engaging portion 201 of the other steel pipe member 200a A plurality of extended steel pipe members 200 (corresponding to the required number of holes according to the depth of the perforation holes) coupled to the upper engaging portion 202; And a base joining member 300 coupled to the upper joining portion 102 of the uppermost steel pipe member 200b installed at the uppermost one of the plurality of the steel pipe members 200 so as to be coupled with the foundation structure.

The foundation method using such steel pipe microfiles is performed by the following process.

A perforation hole 1 is formed in the ground (Fig. 10).

When the strength of the soil layer (a) is weak, a separate casing (20) is installed in the perforation hole (1).

The stopper member 110 is inserted into the perforation hole 1 so that the upper end connecting portion 102 of the steel pipe member 100 is exposed to the ground.

The lower end engaging portion 201 of the extended steel pipe member 200 is engaged with the upper end engaging portion 102 of the steel pipe member 100 to be inserted into the perforation hole 1, 102 are exposed on the ground (Fig. 12).

The lower end fitting portion 201 of the second extended steel pipe member 200a is engaged with the upper end fitting portion 102 of the extended steel pipe member 200 and inserted into the perforation hole 1, So that the upper engaging portion 102 is exposed on the ground.

By repeating the above-described extension step, the upper joining portion 102 of the uppermost end steel pipe member 200b is exposed to the ground (Fig. 13).

An injection apparatus 600 in which a steel pipe fitting portion 610 having a female thread structure is formed at a lower portion and a grout injection portion 620 and an air discharge portion 630 are formed to communicate with the hollow of the uppermost steel pipe member 200b , And an injection device (600) is installed on the upper end coupling portion (102) of a male screw structure formed on the upper outer periphery of the uppermost end portion steel pipe member (200b).

In the case of the pressurized grouting, the packer 10 is provided in the region between the upper end of the uppermost steel pipe member 200b and the inner periphery of the perforation hole 1.

When the grout is injected into the hollow of the steel pipe microfiber by the injection device 600, the grout flows out to the outside of the steel pipe microfilm through the outflow hole 103 of the steel pipe member 100, Charge.

After completion of the grout injection, the injection device 600 is removed from the upper joint part 102 of the uppermost steel pipe member 200b and the foundation joint member 300 is installed (FIG. 14).

Thereafter, the pile construction is completed by the pouring of the foundation concrete (Fig. 15).

This leads to the following effects.

First, unlike a conventional micro-file with a steel rod structure, since a micro-file having a steel pipe structure is applied, a separate hose is not required for grouting, so that it is excellent in workability and structurally superior in cross section can be obtained after construction.

Secondly, when work is required in the basement to reinforce the existing building, it is possible to construct the steel pipe members 100 and 200 by assembling them in the field so that the workability is excellent.

When the ground is composed of the soil layer (a) and the rock layer (b), it is preferable for the structural steel member to be provided so that the end steel pipe member 100 is located in the rock layer (b).

When the protruding portion 120 is formed on the outer circumference of the front end steel pipe member 100 at this time, it is possible to obtain a better frictional force on the outer circumference of the front end steel pipe member 100. Such a protruding portion 120 is formed by a reinforcing bar having a spiral structure surrounding the outer circumference of the front end steel pipe member 100 (Figs. 8 and 9).

When the lower end engaging portion 101 of the leading end steel pipe member 100 is a male screw structure formed on the outer periphery of the steel pipe member 100 and the engaging groove 111 of the female screw structure is formed on the stopper member 110, So that a more excellent workability can be expected.

The stopper member 110 closes the lower end opening of the end steel pipe member 100 and has a structure for taking charge of the end supporting force of the entire micro pile foundation structure, Knowledge 110b or the like (Figs. 4 and 5).

The upper end engaging portion 102 of the end steel pipe member 100 is a male screw structure formed on the outer periphery of the steel pipe member 100 and the lower end engaging portion 201 of the extended steel pipe member 200 is the outer periphery of the extended steel pipe member 200 And the upper end engaging portion 102 of the end steel pipe member 100 and the lower end engaging portion 201 of the extended steel pipe member 200 are joined together by the central coupler 400 having a female thread structure The steel pipe member having the same structure can be bonded by a coupler having the same structure, so that excellent workability can be obtained (FIG. 6).

The lower end engaging portion 201 of the extended steel pipe member 200 is a male screw structure formed on the outer periphery of the extended steel pipe member 200. The upper end of the steel pipe member 100 is provided with an outer periphery and an inner periphery The upper end engaging portion 102 of the end steel pipe member 100 is formed so as to be screwed with the lower end engaging portion 201 of the extended steel pipe member 200. The reinforcing portion 150 of the female screw structure having a larger outer periphery and an inner periphery, Is formed by a female screw structure formed on the inner periphery of the reinforcing portion 150, the cross-section of the coupling portion is not reduced in spite of the screw-fitting structure, so stress concentration is eliminated and excellent overall structural stability can be obtained (Figures 18-20).

When the reinforcing portion 150 is welded to the upper end of the steel pipe member as a cylindrical structure, the above effect can be further increased (FIG. 19).

The lower end engaging portion 201 of the elongated steel pipe member 200 is formed to have a structure in which the outer periphery progressively narrows toward the upper end of the elongated steel pipe member 200. The upper end engaging portion 102 of the distal end steel pipe member 100 has, When the inner circumference of the steel pipe member 100 is gradually narrowed toward the lower side, the joining operation of both members can be carried out more easily and stably.

This coupling structure is equally applicable to the connection between the extended steel pipe member 200 and the second extended steel pipe member 200a to be coupled thereto.

The reinforcing portion 150 of the end steel pipe member 100 is formed with the same structure as that of the reinforcing portion 150 of the end steel pipe member 200 The upper end connecting portion 202 having the same structure as that of the upper end fitting portion 102 of the front end steel pipe member 100 is formed and the lower end of the second extending steel pipe member 200a is formed with an extension The lower end engaging portion 201a having the same structure as the lower end engaging portion 201 of the extended steel pipe member 200 is formed to be engaged with the upper end engaging portion 202 of the steel pipe member 200. [

The foundation joining member 300 embedded in the foundation concrete includes a steel rod 310 having a male screw structure and a support plate 320 coupled to the steel bar 310.

An upper coupler 500 having an upper female thread portion 502 formed at an upper portion thereof to be engaged with the steel bar 310 and a lower female thread portion 501 formed at a lower portion thereof to engage with an upper end coupling portion 102 of an extended steel pipe member 200, The joining operation of the upper foundation joining member 300 and the upper joining portion 102 of the uppermost end steel pipe member 200b can be performed more easily and stably (Fig. 7).

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.

100: end steel pipe member 101: bottom end engaging portion
102: upper coupling portion 103: outflow hole
110: plug member 111: engaging groove
120: projecting portion 150: reinforcing portion
200, 200a, 200b: an extended steel pipe member 201:
202: upper coupling part 250: reinforcing part
300: base joint member 310: steel bar
320: Pillow 400: Center coupler
500: upper coupler 501: lower female thread part
502: upper female screw part 600: injection device
610: Steel pipe joint part 620: Grout injection part
630:

Claims (12)

A stopper member 110 of a bending type 110a structure having an attachment 112 at a lower end thereof;
The lower end engaging portion 101 and the upper end engaging portion 102 of the screw connection structure are formed and the stopper member 110 is screwed into the lower end engaging portion 101 to be closed, 103 formed on both ends thereof;
The lower end engaging portion 201 and the upper end engaging portion 202 of the threaded engaging structure are formed and the lower end engaging portion 201 is formed at the upper end engaging portion 102 of the end steel pipe member 100 or the other end portion of the steel pipe member 200a A plurality of extended steel pipe members (200) coupled to the upper end engagement portion (202);
And a base engaging member 300 coupled to the upper engaging portion 102 of the uppermost steel pipe member 200b installed at the uppermost one of the plurality of the steel pipe members 200 so as to engage with the base structure,
A protrusion 120 is formed on the outer periphery of the end-effector 100,
The projecting portion 120 is formed by a reinforcing bar of a helical structure surrounding the outer periphery of the steel pipe member 100,
The lower end engaging portion 101 of the end steel pipe member 100 has a male screw structure formed on the outer periphery of the end steel pipe member 100,
The stopper member 110 is formed with a coupling groove 111 having a female thread structure,
The lower end engaging portion 201 of the extended steel pipe member 200 has a male screw structure formed on the outer periphery of the extended steel pipe member 200,
A reinforcement portion 150 of a female screw structure having a larger outer circumference and an inner circumference at the outer periphery and the inner periphery of the end steel pipe member 100 is formed at an upper end of the end steel pipe member 100,
The upper end engaging portion 102 of the end steel pipe member 100 is formed by a female screw structure formed on the inner periphery of the reinforcing portion 150 so as to be screwed with the lower end engaging portion 201 of the extended steel pipe member 200 ,
The reinforcing portion 150 has a cylindrical structure and is welded to the upper end of the steel pipe member.
The lower end engaging portion 201 of the extended steel pipe member 200 is formed to have a structure in which the outer periphery gradually narrows toward the upper end of the extended steel pipe member 200,
The upper end joint portion 102 of the end steel pipe member 100 is formed to have a structure in which the inner periphery gradually decreases toward the lower end of the end steel pipe member 100,
Further comprising a second extended steel pipe member (200a) coupled to an upper portion of the extended steel pipe member (200)
The reinforcing portion 250 having the same structure as the reinforcing portion 150 of the distal end steel pipe member 100 is formed on the upper end of the extended steel pipe member 200, A top engaging portion 202 having the same structure as the upper engaging portion 202 is formed,
The lower end of the second extending steel pipe member 200a is provided with a lower end portion 202a having the same structure as the lower end engaging portion 201 of the extended steel pipe member 200 so as to engage with the upper end engaging portion 202 of the extended steel pipe member 200, An engaging portion 201a is formed,
The upper joint part 102 of the extended steel pipe member 200 has a male screw structure formed on the outer periphery of the extended steel pipe member 200,
The base joint member 300 includes a steel rod 310 having a male thread structure and a pressure plate 320 coupled to the steel rod 310,
An upper female threaded portion 502 is formed at an upper portion thereof to be engaged with the steel rod 310 and an upper coupler portion 501 having a lower female threaded portion 501 formed at the lower portion thereof to engage with the upper end engaging portion 102 of the upper- (500)
The basic structure method using a steel pipe microfabricated by the upper coupler (500) to which the upper joint part (102) of the uppermost end steel pipe member (200b) and the base joint member (300)
Forming a perforation hole (1) in the ground;
Inserting the plug member 110 and the steel pipe member 100 into the perforation hole 1 so that the upper end fitting portion 102 of the steel pipe member 100 is exposed on the ground;
The lower end fitting portion 201 of the extended steel pipe member 200 is engaged with the upper end fitting portion 102 of the steel pipe member 100 and inserted into the perforation hole 1, Exposing the top engagement portion 102 to the ground;
The lower end fitting portion 201 of the second extended steel pipe member 200a is engaged with the upper end fitting portion 102 of the extended steel pipe member 200 and inserted into the perforation hole 1, 200a) is exposed to the ground;
Allowing the upper joining portion 102 of the uppermost end steel pipe member 200b to be exposed to the ground by repeating the extension joining step;
A grout injection step of injecting grout into the hollow of the steel pipe microfiber;
And a foundation installation step of installing the foundation joining member (300) on the upper joining part (102) of the uppermost end steel pipe member (200b) after completion of the grout injection,
The grout injection step may include:
And an injection apparatus 600 having a grout injection unit 620 and an air discharge unit 630 formed therein so as to communicate with the hollow of the uppermost steel pipe member 200b ;
Installing the injection device (600) on the upper joint part (102) of a male screw structure formed on the upper periphery of the upper end of the uppermost steel pipe member (200b);
Installing a packer (10) in an area between an upper end of the uppermost end steel pipe member (200b) and an inner periphery of the perforation hole (1);
And injecting grout into the hollow of the steel pipe micropile by the injection device (600)
In the basic installation step,
Removing the injection device (600) from the upper joining portion (102) of the uppermost end steel pipe member (200b) and installing the base joining member (300) after completion of the injection of the grout,
Wherein the end steel pipe member (100) is installed in the rock layer (b). delete delete delete delete delete delete delete delete delete delete delete
KR1020150086627A 2015-06-18 2015-06-18 Steel pipe micro pile and construction method for foundation using the same KR101738126B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150086627A KR101738126B1 (en) 2015-06-18 2015-06-18 Steel pipe micro pile and construction method for foundation using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150086627A KR101738126B1 (en) 2015-06-18 2015-06-18 Steel pipe micro pile and construction method for foundation using the same

Publications (2)

Publication Number Publication Date
KR20160149514A KR20160149514A (en) 2016-12-28
KR101738126B1 true KR101738126B1 (en) 2017-05-19

Family

ID=57724387

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150086627A KR101738126B1 (en) 2015-06-18 2015-06-18 Steel pipe micro pile and construction method for foundation using the same

Country Status (1)

Country Link
KR (1) KR101738126B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102196008B1 (en) * 2020-06-16 2020-12-30 주식회사 도건이엔텍 Construction method of micropile that is convenient for construction

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200344961Y1 (en) * 2003-11-20 2004-03-11 김기백 Steel pipe one-shot grouting structure
KR100943064B1 (en) * 2008-02-19 2010-02-18 홍지기술산업주식회사 Micro pile having dual diameter and foundation construction method using the same
KR101331218B1 (en) 2013-05-03 2013-11-20 김학진 Skin friction force and end bearing capacity reinforced multi section type pre-tensioned spun high strength concrete pile
KR101467142B1 (en) 2014-02-14 2014-12-01 반석기초이앤씨(주) Pressure grouting enabled steel pipe pile and penetration device of the same and pile construction method using the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200344961Y1 (en) * 2003-11-20 2004-03-11 김기백 Steel pipe one-shot grouting structure
KR100943064B1 (en) * 2008-02-19 2010-02-18 홍지기술산업주식회사 Micro pile having dual diameter and foundation construction method using the same
KR101331218B1 (en) 2013-05-03 2013-11-20 김학진 Skin friction force and end bearing capacity reinforced multi section type pre-tensioned spun high strength concrete pile
KR101467142B1 (en) 2014-02-14 2014-12-01 반석기초이앤씨(주) Pressure grouting enabled steel pipe pile and penetration device of the same and pile construction method using the same

Also Published As

Publication number Publication date
KR20160149514A (en) 2016-12-28

Similar Documents

Publication Publication Date Title
KR101522900B1 (en) Micropile of pressure injection and it's construction method
KR101644498B1 (en) Micropile reinforcement structure and Reinforcing method of foot concrete using it
KR100457406B1 (en) Ground Anchor
KR20230035003A (en) Grout injection device and grouting construction method
KR101738126B1 (en) Steel pipe micro pile and construction method for foundation using the same
KR101633505B1 (en) The support material
KR101236765B1 (en) Method for placing adhesive filling into the expanded drill hole to increase bearing capacity of piles and tention members and apparatus therefor
KR101489387B1 (en) End supporting multi micro pile and method for constructing the same
KR101426066B1 (en) End supporting multi micro pile and method for reinforcing structure base using this
KR101871118B1 (en) Pile head reinforcement structure using drilling bit capable of multistage expansion using unwelded coupler and pile construction method using it
KR101680872B1 (en) Inner inserted member for micropile and structure of micropile and construction method thereof
JP6359320B2 (en) Casing segment connection structure in the micropile method
KR200311872Y1 (en) Improved soil nail
KR100991248B1 (en) Foundation construction method of micro pile using pack and pile used in the same
KR200480999Y1 (en) Coulper of steel pipe pile for rotational intrusion and pullout
KR20170057808A (en) Composite pile
KR102522769B1 (en) Fixing construction method of high-strength GFRP hollow bar for tunnel and ground reinforcement and its construction device
KR101965754B1 (en) Seismic retrofit PC wall panel for RC frame and Construction method thereof
KR101121119B1 (en) Foundation construction method of micro pile with pack
KR101609168B1 (en) Small bore steel pipe pile
KR102176457B1 (en) Soil nailing Device and soil nailing method using the same
KR200386863Y1 (en) A soil nailing for exclusion
KR100869369B1 (en) The ground reinforcement apparatus and method grouting type using bundle steel pipe
KR101695720B1 (en) A based pile tip connected type based pile and construction method therefor
KR101110157B1 (en) Foundation construction method of micro pile using pack

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right