KR101844710B1 - Foot Concrete Reinforcing Method Using Micropile And H-Beam - Google Patents

Abstract

The present invention relates to a wall type foundation reinforcement method having an additional load separating micro-pile support structure using a penetrated H-beam, capable of effectively resisting a punching front end without transferring an additional load to an existing foundation in enlargement of a building. According to one embodiment of the present invention, the method comprises: (a) a step of forming a vertical through-hole in a predetermined position of an existing foundation and forming a horizontal through-hole with a predetermined size in a bottom part of a wall; (b) a step of punching a punching hole at a predetermined depth in a lower part of the vertical through-hole; (c) a step of inserting a load separating pipe into the vertical through-hole and penetrating a casing into the load separating pipe to insert the casing up to the punching hole of the predetermined depth; (d) a step of inserting a micro-pile into the casing to be inserted into the vertical through-hole and the punching hole, and grouting the punching hole and the vertical through-hole in order; (e) a step of arranging a head part of the micro-pile and installing a soil pressing plate; (f) a step of allowing a penetrated H-beam to penetrate a through-hole of the wall to expose both end parts of an H-beam body to both sides of the wall and allowing a top part of the micro-pile to penetrate a coupling hole to be coupled and installed to the H-beam body; and (g) a step of depositing mortar in the through-hole of the wall and the head part of the micro-pile to perform finishing.

Description

Technical Field [0001] The present invention relates to a wall-type reinforcing method using a through-hole H-beam,

The present invention relates to a wall-type basic reinforcement method using a through-hole H-beam, and more particularly, to a wall-type basic reinforcement method using an additional load- Shaped reinforced concrete pile supporting structure using a through-hole H-beam that effectively resists the punching shear while preventing the additional load from being transferred to the existing foundation during the expansion.

If it is necessary to perform basic reinforcement due to lack of bearing capacity of existing foundation such as vertical expansion of buildings, it is necessary to install micro-pile or pre-pile pile.

However, in this case, the load added at the time of special re-expansion is not transferred to the reinforced microfiber, but is also transferred to the existing foundation, causing a problem in structural stability. Since the existing foundation must be drilled to install the casing and the steel rods, The punching shear between the reinforcement file and the existing foundation is generated, and in this case, the reinforcement can not perform its role.

As a background of the present invention, there is a patent registration No. 1644498 entitled " Microfiber reinforcing structure and reinforcing base concrete using the same "(Patent Document 1).

In the background art, a microfiber 10 in which a male screw is continuously formed on the outer circumferential surface of a steel bar; A lock nut 19 fastened and fixed to the microfilm at a predetermined distance downward from the head of the microfiber 10; A circular ring plate 14 is formed in the upper part of the lock nut 19 so that the micro pile 10 can be inserted therethrough and a circular ring plate 11); The upper surface of the ring plate 11 is welded to the upper surface of the ring plate 11 at a predetermined distance along the concentric circle at a predetermined distance from the inner circumference of the ring plate 11 and the other end of the ring plate 11 is inclined A file reinforcement rope (12) formed to have a predetermined length and having a second end abutting against the bottom of the foundation concrete to support the foundation concrete load; And a spiral reinforcing bar (13) which is spirally wound around the outer side of the file reinforcement rope (12) provided at a predetermined interval on the upper surface of the ring plate (11) from the lower end to the upper end and joined to the file reinforcement rope A microfiber reinforcing structure. &Quot;

However, in the background art, it is difficult to construct a reinforcement structure by drilling an expanded core hole in a lower portion of a foundation concrete, and when a wide settlement occurs in the foundation concrete, a micro pile of a small diameter is used, There is a problem that the bearing capacity of the foundation concrete may be impaired in the process of installing a plurality of microfiles in the foundation concrete.

Patent No. 1644498 "Microfiber reinforcing structure and basic concrete reinforcing method using the same"

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a load separating pipe on an existing foundation at the time of enlargement and to construct a reinforced micro- It is possible to ensure the structural safety by allowing the generated load to be transmitted directly to the reinforced microfiber without being transmitted to the existing foundation, but to be resistant to the punching shear by penetrating H-beam passing through the wall. By using H-Beam, it is possible not only to reduce construction cost, but also to install through H-beam to penetrate the wall without additional process, It is an object of the present invention to provide a wall-type basic reinforcement method having a separate micro-file support structure.

(A) forming a vertical through-hole in a vertical direction at a predetermined position of an existing base, and forming a horizontal through-hole in a horizontal direction so as to penetrate the lower end of the wall at a predetermined size; (b) drilling a perforation hole at a certain depth in a lower portion of the vertical through hole; (c) inserting a load separating pipe into the vertical through-hole, inserting the load separating pipe through the casing into the perforation hole of a certain depth; (d) inserting microfiles into the casing, inserting microfiles into the vertical through holes and the perforation holes, and grouting successively through the perforation holes and the vertical through holes; (e) arranging the microfilm head and installing a scaffold; (f) a through-hole H made up of a H-shaped beam having a predetermined length and having flanges on its both sides to form a coupling hole, and a wall finishing member protruding on both sides in a direction perpendicular to the longitudinal center of the H- -Beam penetrating the through hole of the wall so that both end portions of the H beam main body protrude to both sides of the wall and the upper end of the micro pile passes through the coupling hole and is coupled to the H beam main body; (g) placing the mortar in the through hole of the wall and the head of the micro-pile and finishing the mortar. < RTI ID = 0.0 > .

Also, in the step (d), the vertical penetrating hole is grouted into non-shrinkable mortar. The present invention provides a wall-type reinforced base structure having an additional load-separated micro pile supporting structure using the penetrating H-beam.

Also, in the step (e), the coupling hole of the penetrating H-beam H beam main body is formed as a long hole, and a method of reinforcing a wall-type reinforced concrete structure having an additional load separation micropile supporting structure using the penetrating H- I want to.

Further, in the step (f), the wall closure member of the penetrating H-beam is formed in the shape of a box having an open top. The wall-type foundation reinforcement method having the additional load- .

Further, in the step (f), the through-hole H-beam has a side closure member composed of a vertically formed side closure and a bending closure extending at a right angle to the inside of the side closure, The present invention provides a method of reinforcing a wall-type foundation having an additional load-separated micro pile supporting structure utilizing a through-hole H-beam.

Further, in the step (a), after the wall through-hole is formed, a receiving plate is formed on the inner upper surface of the horizontal through-hole. The wall having the additional load- Type reinforcement method.

In the wall-type basic reinforcement method using the through-hole H-beam utilizing the through-hole H-beam of the present invention, a load separation pipe is installed on the existing foundation at the time of expansion, and a reinforced micro- By separating the existing foundation and the reinforcement microfiles, the load generated during the expansion can be transferred directly to the reinforced microfiber without being transmitted to the existing foundation, while the penetrating H-beam passing through the wall will resist the punching shear to secure structural safety. It is possible to reduce the construction cost by using H-Beam with simple structure using H-beam, and it is easy to construct and shorten the air by constructing penetrating H-Beam through the wall without additional process There is a very useful effect that can be done.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. Shall not be construed as limiting.
FIGS. 1 to 5 are views showing a wall-type basic reinforcing method having an additional load-separated micro pile supporting structure utilizing the through-hole H-beam of the present invention in the order of construction.
6 is a perspective view of a through-beam H-beam of the present invention.
7 is a perspective view of another embodiment of the through H-beam of the present invention.
8 is a side cross-sectional view of a construction embodiment to which FIG. 6 is applied.
FIG. 9 is a view schematically showing a load transfer process according to the existing base and the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

Hereinafter, the technical structure of the present invention will be described in detail with reference to the preferred embodiments.

FIGS. 1 to 5 are views showing a wall-type basic reinforcing method having an additional load-separated micro pile supporting structure utilizing the through-hole H-beam of the present invention in the order of construction.

The wall-type basic reinforcement method using the through-hole H-beam of the present invention having the additional load-separated micro-pile support structure is a method of reinforcing the foundation reinforcement due to the additional load caused by the expansion and contraction of the existing structure formed of the wall- 1, a vertical through hole 21 is formed at a predetermined position spaced apart from a position where the existing pile 2 is installed in the existing foundation 20, and the wall 10 A horizontal through-hole 11 is formed to penetrate the lower end portion of the base plate 11 with a predetermined size.

The existing foundation 20 is pierced with equipment such as a core drill to expose the ground below the foundation 20 of the vertical through-hole 21 to drill the vertical through-hole 21.

In the wall 10, a horizontal through-hole 11 having a predetermined size is formed so that the through-hole H-beam 50 can penetrate through the horizontal through-hole 11 at a portion where the micro-pile 10 is installed do.

Thereafter, the perforation hole 30 is drilled at a predetermined depth in the lower portion of the vertical through hole 21 (b).

Here, the width of the vertical through hole 21 is larger than the width of the perforation hole 30.

2, a load separation pipe 25 is inserted into the vertical through hole 21, and a casing 26 is installed inside the load separation pipe 25 to form a double pipe structure (c).

The load separation pipe 25 may be formed of a variety of materials such as plastic or metal in the form of a pipe. The load separation pipe 25 may be inserted into the vertical through holes 21 of the existing foundation 20 and inject mortars between the vertical through holes 21 . The load separation pipe 25 separates the existing foundation 20 and the additional microfiles 40 to be described later so as to prevent the load transmitted to the microfiles 40 from being transmitted to the existing foundation 20.

The casing 26 is formed in a pipe shape having a diameter smaller than that of the load separating pipe 25 and made of various materials such as plastic or metal. The casing 26 is installed through the inside of the load separating pipe 25 and extends from the upper end of the vertical through- It is inserted to a predetermined lower depth of the existing foundation 20 so as to prevent burial of the gravel in the perforated portion in the soft ground layer at the time of forming the perforation hole 30 to be described later.

The load separation pipe 25 is inserted into the vertical through hole 21 and the casing 26 is installed inside the load separation pipe 25 to form a double pipe structure and the existing foundation 20 and the micro pile 40 And the penetrating H-beam 50 connected thereto, so that the load generated during the expansion can be directly transmitted to the reinforcing micro pile 40 without being transmitted to the existing foundation.

3, the microfiles 40 are inserted into the casing 26 to insert the microfibers 40 into the vertical through holes 21 and the perforation holes 30, and the microfiles 40 are inserted into the perforation holes 30, And the vertical through holes 21 (d).

The micro pile 40 is inserted into the perforation hole 30 and then the grout material G is injected into the perforation hole 30 so that the micro pile 40 and the perforation hole 30 are integrated , And the grout material is also injected into the vertical through holes (21).

At this time, the non-shrinkable mortar is grouted in the vertical through-hole 21 to have a sufficient compressive strength.

Thereafter, the head of the microfilm 40 is arranged and the pressure plate 41 is installed (f).

The head of the micro pile 40 exposed on the upper portion of the existing base 20 is arranged and the head plate 41 is joined to the head.

6 is a perspective view of a through-beam H-beam of the present invention.

4 and 6, a penetrating H-beam 50 is inserted through the horizontal through-hole 11 of the wall 10 so as to be coupled with the micro pile 40 (e).

The penetrating H-beam 50 includes an H beam main body 51 composed of a H-shaped steel having a predetermined length, a wall finishing body 51 formed to protrude from both sides in a direction perpendicular to the longitudinal center of the H beam main body 51, And a member (52).

At this time, a coupling hole 512 is formed in the flange 511 of the H beam main body 51 on both the lower flange and the upper and lower flanges, so that the micro pile 40 can penetrate and be coupled.

In particular, the engagement hole 512 of the H beam main body 51 may be formed as a long hole, so that a construction error can be absorbed when coupling with the micro pile 40.

The wall closure member 52 is a member that is fitted to the horizontal through hole 11 of the wall body 10 and allows the wall body 10 to be closed. The wall closure member 52 may have various shapes such as a slab, a steel pipe, 51 by a variety of known methods such as welding so as to protrude from both sides in a direction perpendicular to the longitudinal center portion.

The penetrating H-beam 50 penetrates through the horizontal through-hole 11 of the wall 10 so that both ends of the H beam main body 51 protrude from both sides of the wall 10, The upper end of the H beam main body 51 is inserted through the coupling hole 512 to be coupled to the H beam main body 51.

6, the wall closure member 52 of the penetrating H-beam 50 is formed in the shape of a box with an open top so that mortar can be poured into the opened top, ) And the horizontal through-hole (11), respectively.

As described above, the penetrating H-beams 50 provided in the horizontal through holes 11 of the wall 10 each have both ends protruded on both sides of the wall 10, 512 are passed through the upper end of the microfiber 40 and fixed by the nut 45.

FIG. 7 is a perspective view of another embodiment of the through-hole H-beam of the present invention, and FIG. 8 is a side cross-sectional view of a construction embodiment to which FIG. 6 is applied.

7 and 8, a side closure member 53 including a vertically formed side closure portion 531 and a bent closure portion 532 extending at a right angle inner side from the side closure portion 531, Beam 50 is formed so as to be opposed to the upper portion of the wall closure member 52 in a direction perpendicular to the longitudinal direction of the wall 51 when the through H-Beam 50 is fitted in the horizontal through- The upper surface and the horizontal through-hole 11 are closed to facilitate the pouring of the mortar.

That is, the vertical height of the side finishing portion 531 may be equal to or slightly higher than the height between the upper surface of the through-hole H-beam 50 and the horizontal through-hole 11, The mortar is poured into the upper portion of the through-hole H-beam 50 so that the horizontal through-hole 11 can be closed.

8, the support plate 12 is formed on the inner upper surface of the horizontal through-hole 11 after the horizontal through-hole 11 of the wall 10 is formed in advance in the step (a) And the microfibers 40 are moved from the receiving plate 12 through the penetrating H-beam 50 while the mortar is poured together with the side closing members 53 of the penetrating H- So that it can be directly supported.

Finally, as shown in FIG. 5, the mortar is poured into the horizontal through-hole 11 of the wall 10 and the head of the micro-pile 40 to close the wall (g).

 The upper surface of the H-beam 50 of the horizontal through-hole 11 of the wall 10, the interior of the wall closure member 52 and the lower surface of the H beam main body 51 of the head of the micro- Shrinkable mortar is placed between the upper surfaces of the foundation 20 to cure sufficiently to have a predetermined compressive strength so that the micro pile 40 can directly support the additional load.

Particularly, as shown in the drawing, a mortar may be installed after an additional reinforcing assembly 55 is installed on the upper portion of the penetrating H-beam 50 of the wall horizontal through-hole 11.

As described above, in the wall-type basic reinforcing method using the through-hole H-beam of the present invention, the reinforced micro pile 40 is applied to the existing foundation 20 at the time of expansion, The penetrating H-beam 50 is installed and the front end of the micro pile 40 is coupled to the penetrating H-beam 50 to resist the punching front end of the micro pile 40 to secure structural safety To be able to do so.

Particularly, in step (a), cutting is performed from the upper end of the existing foundation 20 to a lower part of a predetermined height, and a vertical through-hole 21 is formed at a predetermined position of the existing foundation 20. In step (f) The height of the tip of the micro pile 10 is lowered so that the upper portion of the cut base 20 is closed with a certain thickness of mortar to be poured into the horizontal through hole 11 of the wall 10 of the penetrating H- The mortar can be installed in a predetermined thickness on the upper portion of the cut base 20 so that the finished surface is not exposed to the upper portion of the base 20.

FIG. 9 is a view schematically showing a load transfer process according to the existing base and the present invention. FIG.

9A, the existing foundation 20 is supported by the existing file 2 so that the foundation load P is equally transferred to the existing file 2 in P / 2, The additional incremental load is transferred to the existing file (2) if it is not separated from the existing foundation (20).

Therefore, in the present invention, the load separation pipe 25 and the casing 26 are formed so as to protrude a certain distance from the vertical through-hole 21 of the base 20, and the through hole H-Beam The additional incremental load Q is transferred to the added micro file 40 divided by 2 / Q without being transferred to the existing file 2, as shown in FIG. 9B.

The method of reinforcing a wall-type foundation with additional load-separated micro pile supporting structure utilizing the through-hole H-beam of the present invention as described above is characterized in that a load separation pipe is installed on an existing foundation at the time of expansion, The existing foundation and the reinforcement microfiles are separated so that the load generated during the expansion can be transferred directly to the reinforced microfiber without being transferred to the existing foundation, while the penetrating H-beam passing through the wall can resist the punching shear, And it is possible to reduce the construction cost by using the simple structure H-beam through the H-beam, and it is easy to construct by installing the through H-beam to penetrate the wall without additional process There is a very useful effect that can shorten the air.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

2: existing file
10: Wall
11: Through hole
20: existing foundation
21: Through hole
30: Perforated hole
40: Micro file
41:
50: Through H-Beam
51: H beam main body
52: wall closure member

Claims (6)

(a) A vertical through-hole 21 is formed at a predetermined position of a base 20 in a vertical direction, and a horizontal through-hole 11 is formed in a horizontal direction so as to penetrate the lower end of the wall 10 with a predetermined size step;
(b) drilling a perforation hole (30) at a certain depth in a lower portion of the vertical through hole (21);
(c) The load separation pipe 25 is inserted into the vertical through hole 21 and the casing 26 is passed through the load separation pipe 25 so that the upper end thereof protrudes to the upper portion of the existing foundation 20 at a predetermined height Inserting up to a perforation hole (30) of a predetermined depth;
(d) The microfilm 40 is inserted into the casing 26 to insert the microfilm 40 into the vertical through hole 21 and the perforation hole 30, and the perforation hole 30 and the vertical through- 21);
(e) arranging the head of the microfilm 40 and installing the pressure plate 41;
(f) an H beam main body 51 made of H-shaped steel having a predetermined length and having flanges 511 formed on both sides thereof to form a coupling hole 512, Beam H-beam 50 composed of a wall closure member 52 formed to protrude from both sides penetrates the horizontal through-hole 11 of the wall body 10 so that both ends of the H beam main body 51 are connected to the wall 10, And an upper end of the micro pile 40 is inserted into the H beam main body 51 through the coupling hole 512 to be installed on both sides of the H beam main body 51;
(g) applying mortar to the head of the horizontal piercing hole (11) and the micro pile (40) of the wall (10) to finish the additional load separation micro- A wall - type foundation reinforcement method having a pile support structure. The method according to claim 1,
In step (d)
Characterized in that the vertical through holes (21) are grouted with non-shrinking mortar. The method of reinforcing a wall-type foundation with an additional load-separated micro pile support structure utilizing penetrating H-beams. The method according to claim 1,
In step (f)
Through H-Beam (50) The H-beam main body (51) has an engagement hole (512) formed by a long hole. The method according to claim 1,
In step (f)
Wherein the wall closure member (52) of the penetrating H-beam (50) is of a box shape with an open top. The method of claim 4,
In step (f)
The penetrating H-beam 50 has a side closure member 53 consisting of a vertically formed side closure member 531 and a bent closure member 532 extending at a right angle inner side from the side closure member 531, 51 and the wall closure member 52 in a direction perpendicular to the wall closure member 52. The method of reinforcing a wall-type foundation with an additional load- The method of claim 5,
In step (a)
Characterized in that the support plate (12) is formed on the inner upper surface of the horizontal through-hole (11) after forming the horizontal through hole (11) of the wall (10) Wall - type foundation reinforcement method with micro - pile support structure.

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