KR20150019962A

KR20150019962A - Plate equipment fixing micropile and it's construction method

Info

Publication number: KR20150019962A
Application number: KR20130097480A
Authority: KR
Inventors: 이광신
Original assignee: 한국라이언기초건설주식회사; 한국팽이건설 주식회사
Priority date: 2013-08-16
Filing date: 2013-08-16
Publication date: 2015-02-25

Abstract

The present invention relates to a micropile fixing apparatus and a fixing method thereof. The present invention is to construct a hollow trade bar which is a micropile on a fundamental lower ground of a slab structure constructed by cement and support the slab structure constructed by cement with the micropile fixing apparatus comprised by using cylinder plate rings and nuts on the basis of the hollow trade bar.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a microfiber fixing device,

The present invention relates to a fixing device and a fixing method thereof in a structure using microfiles,

The microfiles, which are microfiles, are placed on the foundation foundation of the cemented slab structure. The microfiles are supported by a circular ring plate and a nut. To a structure fixing apparatus and a fixing method using the same.

In general, when a building or structure is erected, foundation work is performed to reinforce the ground in order to support the upper structure according to the condition of the ground or the load of the structure. For example, if the ground contacted with the structure has sufficient stiffness to support it, such as a hard ground, it is possible to carry out the foundation work directly. However, in case of the soft ground, And strengthening the ground by carrying out designated works to improve the ground, and then to carry out foundation work on the ground.

The micro-file is smaller in noise and vibration than the existing steel pipe file or concrete file, and can be installed in a narrow space. Therefore, construction in an urban area, basic reinforcement of an existing building as well as a buoyancy anchor It can also be used as.

This is because it is a file with a small cross-sectional area, so compression and tension can be performed simultaneously because it is a system using peripheral frictional force, ignoring the end bearing capacity.

In the prior art, the Japanese Patent Registration No. 10-0918771 (the microfiber head fixing apparatus and fixing method using the microfiber head fixing apparatus) discloses a method in which a head portion of a micro pile and a foundation concrete Which is capable of quickly and safely transferring a load, and a fixing method therefor.

However, due to the above-mentioned prior art, microfabrication holes are drilled in the foundation concrete, dust and noise are inevitably generated, which deteriorates the working environment and increases the construction period and cost.

On the other hand, even in the case of the domestic registration No. 10-0899372 (a method of fixing a new micro pile head to an existing concrete base structure, and a reinforcing method and a reinforcing structure of the base and pillar structure using the same), a through- The same problem occurs because microfiles are installed.

However, in the case where a foundation is to be reinforced due to settlement of such a conventionally constructed structure, a method of injecting cement liquid or mortar into the ground has been mainly used. However, this method is difficult to secure the quality of construction, There is a problem in that it is not effective in supporting the constructed structure because there is only an effect of suppressing additional settling.

In some cases, it is often necessary to lay foundation concrete in the field, to break the foundation concrete at the pile construction site, to core pierce, to fix the foundation concrete and micro pile through micro pile construction.

When microfiles are constructed, dust is generated in the course of breaking the foundation concrete or drilling the core, which may damage the working environment, and it may be difficult to work with crushing or core equipment, and the construction period and cost increase have.

Since the light oil using the conventional hollow pipe is inserted between the hollow pipe and the tread bar because the hollow pipe is inserted into the tread bar, the cement and the tread bar are not connected to each other and are separated from each other.

It also has the problem of utilizing the original purpose of the pile structure system or its advantages to make the cement and tread bar coincide with the spiral curvature in the tread bar.

The ring plate is not connected to the tread bar simply by perforating the hole, but is simply inserted, and therefore, the tread bar is not connected to the ring plate.

Therefore, since all the forces are supported by the upper and lower nuts, when the nuts are loosened or loosened a little, they often fail to function as fixing devices receiving concentrated stresses, resulting in poor supportability. Such a fixing device transfers a very large upper force and distributes the force evenly in order to transmit it to the support pile.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a fixing device and a fixing method capable of improving the fixing strength while ensuring the stability of the base structure by minimizing the removal portion of the base structure .

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a concrete structure for a concrete structure, In case of fixing, it is possible to easily carry out the supporting operation of the cement slab structure through the simple device and process, regardless of the size of the foundation concrete structure or the ground, so that the removal part of the foundation structure can be minimized, A fixing device and a fixing method of a structure using a microfibre that can significantly improve the productivity of a construction work process and reduce a construction cost can be achieved while securing stability while improving fixing strength. The purpose.

In addition, the present invention relates to a fixing device in which a disk-shaped ring plate is connected so that a tread bar and a ring plate are integrated with each other to smoothly transmit a force, and a fixing device is made to receive a large supporting force by using a screw thread of a tread bar, Therefore, the spring is connected between the disk-shaped ring plates to distribute the stress, so that the stress is dispersed and transmitted, so that the bearing force can be increased without separating or separating from the existing slab.

As described above, according to the present invention, a fixing device and a fixing method for a structure using the micro pile according to the present invention are characterized in that a hollow tread bar, which is a micro pile, is installed on the foundation bottom of a slab structure constructed with cement, It is possible to support a cement slab structure constructed with a microfabrication device using a nut and a nut so that a structure supporting operation can be easily performed through a simple device and a process, The fixation strength can be improved while securing the stability of the structure, the construction period can be shortened, and the structural stability can be secured.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an overall configuration diagram of a micro-
Fig. 2 is a schematic view of another embodiment of the microfiber fixing device of the present invention
3 is a flowchart of a fixing method of a microfiber fixing device of the present invention

A structure using a micro pile capable of supporting a cement slab structure constructed by a microfiber fixing device constituted by using a circular ring plate and a nut with a microfilter trade bar installed on the foundation bottom of a slab structure constructed with cement A fixing device and a fixing method.

The embodiments of the present invention may be modified in various ways, and the scope of the present invention should not be interpreted as being limited by the embodiments described below.

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

Fixing device using micro file

1 is a perspective view showing the entire configuration of a microfiber fixing device according to the present invention. FIG. 1 - B) is a sectional view showing the entire configuration of a microfiber fixing device .

The microfile tread bar (TB) of the present invention has hollow and spiral irregularities to maximize the cement grouting and frictional force, thereby enhancing the fixation force.

Therefore, the structure of the microfabrication apparatus of the present invention is a structure in which a fixing nut 10 fastened to a lower portion of a hollow tread bar TB is fastened, and a screw-type disk-shaped ring plate 20).

Then, a screw-type disk-shaped ring plate 21 is coupled and fixed so as to be positioned in the middle portion of the hollow tread bar TB of the microfibre fixing device,

The ring-shaped plate 22 is fixed to the upper surface of the hollow tread bar TB by a fixing nut 11, And to provide a fixing device using a file.

A fixing nut 10 is fixed to the lower portion of the hollow tread bar TB protruding from the bottom of the hollow hole 110 of the foundation concrete 100, The plate 20 and the ring plate 21 are combined with the ring plate 22, and then the fixing nut 11 is engaged.

At this time, a screw or a nut may be used, but it may be welded.

A general tread bar (TB) is divided into a steel rod type and a hollow type, and a steel rod type is formed in the same shape as a steel bar which is hollowed like a steel pipe. The hollow type is formed by a hollow tube, Type tread bar (TB).

Then, concrete is filled in the perforation hole 110 of the foundation concrete 100 in which the microfiber fixing device is installed, thereby forming a finished concrete filling part 200.

In addition, a disk-shaped ring plate 20 coupled to the lower portion of the hollow tread bar TB at a predetermined interval around the disk-shaped ring plate 21 coupled to the middle portion of the hollow tread bar TB of the microfiber fixing device, And a spring (S) is further provided for dispersing stress between the disk-shaped ring plates (22), thereby reducing the dispersion of force and effectively fixing the same.

In order to transmit loads between the ring plate 22, the ring plate 21 and the ring plate 20 coupled to the upper portion, the middle portion and the lower portion of the hollow tread bar TB of the micro pile fixing device, The present invention also provides a microfiber fixing device for further increasing a fixing force by further including a transferring ring (30).

As described above, in the micro-pile fixing device of the present invention, the hollow tread and the ring plate are integrated to connect a disk-shaped ring plate to smooth the transmission of force, and fix the hollow tread bar to receive a large supporting force Since the device is made and the upper load acts on the fixing device with a large force, a spring is connected between the disk plates to distribute the stress so that the stress is dispersed and transmitted, so that the bearing force can be increased without separating or separating from the existing slab.

Fixation method using microfiber fixing device

A fixing method using a microfibre fixing device according to [Embodiment 1] of the present invention having such a structure will be described.

FIG. 3 is a flowchart illustrating a fixing method of the microfibre fixing apparatus of the present invention, which will be described in detail as follows.

That is, in a method of reinforcing or repairing a foundation, a method of fixing a micro pile composed of a hollow tread bar (TB) to a foundation concrete is to first break the foundation concrete 100 at the foundation reinforcement or repair site, Thereby forming a perforation hole 110 (Fig. 3-A).

Then, the surface of the perforated hole 110, which is worn or core-punched, is chipped so as to form irregular ridges so as to exhibit the maximum frictional resistance (FIG.

Thereafter, the micro pile including the hollow tread bar (TB) is inserted into the chipped perforation hole (110) and positioned in the center. A fixing nut 10 and a disk-shaped ring plate 20 are successively joined to the lower portion of the hollow tread bar TB and a screw-type disk-shaped ring plate 21 And a screw-type disk-shaped ring plate 22 and a fixing nut 11 are sequentially connected to an upper portion of the hollow tread bar TB to provide a micro pile fixing device (FIG.

At this time, the coupling of the ring plate may be screwed using a bolt or the like, but may be welded.

Thereafter, a non-shrinking mortar and concrete are poured into the chipped perforation hole 110 of the foundation concrete 100 in which the microfiber fixing device is installed to form a finished concrete filling part 200 so that the inside of the chipped perforation hole 110 And a hollow tread bar (TB) to fix the micro pile.

A disk-shaped ring plate 20 coupled to the lower portion of the hollow tread bar TB at a predetermined interval around the disk-shaped ring plate 21 coupled to an intermediate portion of the hollow tread bar TB of the microfiber fixing device, And further comprising a spring (S) for dispersing stress between the disk-shaped ring plates (22), thereby reducing the dispersion of force and effectively fixing the micro-pile.

In order to transmit a load between the ring plate 22, the ring plate 21, and the ring plate 20 coupled to the upper, middle, and lower portions of the hollow tread bar TB of the microfiber fixing device, And a load transfer ring (30) for further increasing the fixing force, thereby more effectively fixing the micro pile fixing device when cement or concrete is poured in the perforation hole (110).

The cement or concrete pouring in the perforation hole 110 may be performed before the fixing structure is fastened to the upper portion of the hollow tread bar TB, that is, before the fastening nut 11 is fastened to the tread bar TB, It can also be carried out together with the pouring concrete.

The microfabrication apparatus and the fixing method according to [Embodiment 1] of the present invention have such a structure that the anchor plate is merely embedded in the finished concrete in the conventional fixing structure, so that it is vulnerable to drawing when the load acts, When the adhesion between the concrete and the existing foundation concrete is weakened, the microfibers can be pulled out together with the finished concrete. However, in the present invention, the disk-shaped ring plates 20 to 22 The chipped hole 110 and the non-shrinking maltter are inserted into the base concrete 100 after being assembled with concrete, thereby solving the conventional problems and improving the fixing strength.

TB: Hollow Tread Bar S: Spring
100: concrete (slab) 110: perforation hole
200: Concrete filling part
10, 11: Fixing nut 20, 21, 22: Ring plate
30: Load transmission ring

Claims

A micro-pile fixing device for fixing a micro-pile comprising a tread bar (TB) to a base concrete (100)
The tread bar (TB) comprises a fixing nut (10) which is hollow and fastened to the lower portion,
A screw-type disk-shaped ring plate 20 coupled to an upper portion of the fixing nut 10,
A screw-type disk-shaped ring plate 21 coupled to an intermediate portion of the tread bar TB,
A screw-type disk-shaped ring plate 22 coupled to an upper portion of the tread bar TB,
And a fixing nut (11) fastened to an upper portion of the disk-shaped ring plate (22).

The method according to claim 1,
A disk-shaped ring plate 20 coupled to a lower portion of the disk-shaped ring plate 21 coupled to an intermediate portion of a hollow tread bar (TB) of the micro-pile fixing device, and a disk- And a spring (S) for distributing stress between the fixing roller (22) and the fixing roller (22).

The method according to claim 1,
A ring plate 21 and a ring plate 20 coupled to the middle and lower portions of the hollow tread bar TB of the microfabricating apparatus and one or more load transmission rings 30. The microfiber fixing device according to claim 29,

A method of fixing a micro-pile comprising a tread bar (TB) to a base concrete,
Breaking the foundation concrete (100) or drilling the core to form the perforation hole (110)
Chipping the maximum frictional resistance height by chipping the surface of the perforated hole (110) that breaks or coarses to form a ruggedly irregular surface;
Inserting a micropile comprising a hollow tread bar (TB) in the chipped perforation hole (110)
Sequentially coupling a fixing nut (10) and a disk-shaped ring plate (20) to a lower portion of the hollow tread bar (TB)
A screw-type disk-shaped ring plate 21 is coupled to an intermediate portion of the hollow tread bar TB and a screw-type disk-shaped ring plate 22 and a fixing nut 11) are sequentially connected to each other to install a microfiber fixing device,
And a finishing step of forming a finished concrete filling part (200) by placing non-shrinking mortar and concrete in a chipped perforation hole (110) of a foundation concrete (100) Wherein the microfibers are fixed by including a hollow tread bar (TB) within the microfibers.

5. The method of claim 4,
A disk-shaped ring plate 20 coupled to a lower portion at regular intervals around a disk-shaped ring plate 21 coupled to an intermediate portion of the hollow tread bar TB, and a disk-shaped ring plate 22 And further comprising a step of installing a spring (S) for distributing stress between the microfibers

5. The method of claim 4,
One or more load transferring rings 30 for transferring loads between the ring plate 22, ring plate 21 and ring plate 20 coupled to the upper, middle and lower portions of the hollow tread bar TB A microfiber settling method that allows the settling, including further installation steps