KR101657183B1 - Cast-in pile construction method using compaction device - Google Patents

Abstract

The present invention relates to a method of piling a dredged pile using a compaction device which can easily make a pile of a drilled pile easily after completing compaction and sludge removal after ground penetration, (b) inserting the compaction device into the perforation hole by using the perforator as it is, stirring the distal end residual slime formed at the formation of the perforation hole by stirring with the tip fixing solution, (C) constructing a drilled hole (H) through which the residual slime is removed by compression.

Description

[0001] CAST-IN PILE CONSTRUCTION METHOD USING COMPACT DEVICE [0002]

Field of the Invention The present invention relates to an on-site piling method using a compaction apparatus. More specifically, the present invention relates to a piling method using a compaction device which is capable of easily performing a compaction and removal of a residual slime after ground penetration, thereby making it easier to construct a pile casting site.

The foundation method of the structure is largely classified into shallow foundation and deep foundation method. Deep foundation method is a basic form in which the structure load is transferred to the leading supporting layer by using piles or the like due to lack of supporting force of the ground.

Deep foundation materials are classified into plain concrete piles, steel pipe piles, and on-site concrete piles.

First, the ready-made concrete pile and the steel pipe pile are available for most construction sites because of the quality of the construction and the quality of the construction. However, complaints due to noise and vibration, joints due to transportation restrictions, and difficulties with the foundation are difficult.

In addition, the above-mentioned drilled-in-place pile does not require a pile sound by a low-noise and low-vibration method, and it is easy to cope with the load condition of the upper structure and has an advantage that the bearing capacity can be increased as compared with a foundation pile.

In the case of Korea, however, the auger type hollow pile casting using a conventional pile equipment has not been applied much, and usually, a large diameter pile having a diameter of at least 1,000 mm is mainly used.

In addition, large diameter drilled piles are excavated by installing casing and internal excavation equipment during excavation, so that construction speed is low and construction cost is high.

In addition, the residual slime treatment at the tip of the pile is the biggest problem in the field drilling pile used in Korea, and when the residual slime treatment is insufficient, there is a problem that the bearing capacity of the leading end decreases.

In other words, as a conventional slurry treatment method of a conventional drilled pile, after the residual slime has settled, the first residual slime is treated by using a cleaning bucket or the like and the secondary slime is treated by an air lift, an underwater pump, an air jet, Although the method of removing residual slime is used,

It is difficult to completely treat the residual slime in the field, and the tip bearing capacity of the pile is estimated to be about 1/2 of that of the conventional pile loading method.

It is an object of the present invention to improve the end bearing capacity by closely contacting the relaxed ground by stirring the distal slurry at the tip end of the cast-in-place pile with the tip fixing liquid by using a compaction apparatus in the construction of the drilled pile, This study aims to solve the problem of provision of a piling method using a compaction device suitable for a pile casting in the middle of the tunnel.

In order to achieve the above object,

First, an upper compaction part capable of transmitting a compaction load by vibration, a putter, a rotary press-fitting method and a combination thereof, an intermediate length adjusting part capable of adjusting the length according to a change in pile length, and a lower compaction part for removing residual slime The present invention also provides a compacting apparatus for improving residual slime of a drilled pile,

That is, it is possible to perform the residual slime treatment of the tip of the conventional cast-in-place pile using the compaction apparatus. At this time, the compaction apparatus can solve the difficult problem of installing the casting pile by making the residual slime treatment possible by using the drilling machine used for the drilling of the ground for the drilling of the field drilling pile.

Secondly, the compaction device can be assembled into an upper compaction part, an intermediate length adjustment part, and a lower compaction part so that the compaction device can be assembled into a perforation hole while being lifted in a conventional perforator.

Third, the upper compaction part serves to transmit an external load (vibration or putter) such as a vibration, a putter, and a rotary press-in, and can be applied to a rotary press method using a conventional perforator. A rubber pad for shock absorption and noise, a lifting ring for lifting the compaction device, a bolt with an intermediate connection structure or a plate structure for welded joints.

In case of complaints about vibration noise caused by vibrations or strokes, the rotary press method using a perforator is applied. In the case of the rotary press method, the upper compaction portion can be applied in the same manner as the rotary pushing of the outer casing of the existing perforator.

The middle length adjuster may change the length depending on the length of the pile. The middle length adjuster may be an H-shaped steel or a steel pipe depending on the site conditions. The upper and lower compaction units may have a plate structure, Or welding connection is possible.

The lower compaction unit has a compaction support plate having a structure capable of effectively treating the residual slurry at the tip of the perforation hole. The compaction support member can have a circular, square or polygonal shape. The compaction support type is a flat plate type, It is possible to apply a bracket type, a reinforcing material lattice type, etc., and a structure which can weld or bolt connection with the plate is formed with the intermediate connection structure.

(A) forming a perforation hole in the ground using a perforator, (b) inserting a compaction device into the perforation hole by using the perforator as it is, (C) pouring a drilled hole into the perforation hole (H) through which the residual slime is removed, and (d) pouring the pouring hole into the perforation hole (H)

The upper compaction unit and the lower compaction unit, which are assembled to the intermediate length adjusting unit so that they can be reused by replacing only a necessary portion as a portion to which a load due to compaction and a putter is directly applied, The method of the present invention provides a piling method using a compaction device which complements the slip at the distal end portion by the lower compaction portion as the upper compaction portion is put under the action of a putter,

According to the residual slime treatment method of the present invention, the residual slime treatment and the residual slime removal method for improving the bearing capacity can be applied to an upper compaction unit to which a vibration, a putter and a rotary press method can be applied, Since the residual slime can be effectively removed by the intermediate length adjusting section as the control section and the lower compaction section capable of compressing and removing the residual slime at the distal end ground, the pile holding capacity of the casting pile is increased, And thus it is possible to secure economical efficiency and to shorten the air.

1 is a configuration diagram of a compaction apparatus of the present invention;
FIG. 2A is a partial structural view of a compaction apparatus for rotary pressing according to the present invention,
Figure 2b illustrates embodiments of the upper and lower compaction plates of the present invention,
FIGS. 3A, 3B, 3C, 3D, 3E and 3F are flowcharts of the cast-in-place piling method using the compaction apparatus of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

[Compensating device 100 for a cast-in-place pile of the present invention]

FIG. 2 is a perspective view of a compaction apparatus according to a first embodiment of the present invention; FIG. 2 is a perspective view of the compaction apparatus according to the present invention; FIG.

The compaction apparatus 100 includes upper compaction units 110 and 110a, an intermediate length adjustment unit 120, and a lower compaction unit 130.

The upper compaction units 110 and 110a may be divided into an upper compaction unit 110 for compaction and a light compaction and an upper compaction unit 110a for rotation pressing. If there is room for civil complaints due to noise or vibration It is used for rotational indentation.

First, the upper compaction unit 110 for compaction and light is composed of an upper body 111, an upper compaction plate 112, and an upper reinforcing plate 113 as shown in FIG.

The upper body portion 111 is made of a steel pipe or H-shaped steel having a predetermined length, and the upper compaction plate 112 is fixed to the upper surface by welding or the like. (120).

In other words, the length of the upper body part 111 may be determined to a degree that facilitates the transportation and assembly of the upper compaction part 110, considering the extension length of the ground drilled pile.

A lower connecting plate 116 is further formed on the bottom surface of the upper body 111 so as to be connected to an intermediate length adjusting unit 120 to be described later.

The lower connection plate 116 has a larger sectional area than the upper end of the upper body 111 and the lower connection plate 116 is formed by the inner reinforcing plate 114 and the outer reinforcing plate 115 So that it is possible to reinforce the connection site.

The upper compaction board 112 is a plate member fixed by welding or the like on the upper surface of the upper body 111. When a plate member having a larger sectional area than the upper body 111 is used, do. It is preferable that the upper compaction board 112 is made of the same plate material as the lower connection board 116.

The upper reinforcing plate 113 is made of an elastic rubber plate having a predetermined thickness for preventing the upper compaction plate 112 from being damaged by a load due to compaction and a putter. When the compaction plate 112 is damaged by an anchor bolt or the like, it can be replaced.

Further, an inner reinforcing plate 114 may be further formed inside the upper end of the upper body part 111 to prevent the parachute due to a load caused by compaction and a putter, and a lifting ring 117 are further formed between the upper outer peripheral surface of the upper body part 111 and the lower surface of the upper reinforcing plate 112.

Therefore, the upper compaction unit 110 of the present invention can be reused by replacing only the necessary portion when the compaction and the load applied by the putter are directly applied, However, it is possible to use the one which is manufactured so as to have the depth of formation of the drilled pile of the field, and the entire length which is easy to carry and assemble.

At this time, since the construction of the compaction apparatus by the load due to the compaction and the putter causes noise and vibration and civil complaints may occur, the rotary compaction upper compaction unit 110a is shown so that the compaction apparatus can be constructed by the rotational pressing 2A.

That is, the upper press-fit upper compaction portion 110a includes an upper body portion 111, a lower connection plate 116, and an inner reinforcement plate 114 having a rotation press-fit hole 118 formed therein as shown in FIG. do.

In other words, the upper compaction part 110a for rotary press-fitting is rotated by using a jig (not shown) in the rotary press-fit hole 118 formed to penetrate the upper body part 111, The intermediate length adjusting unit 120 and the lower compaction unit 130 connected to the unit 111 have a function of transmitting the rotational force within the perforation hole.

At this time, the rotary press-fit hole 118 may serve as a lifting ring of the upper press-fit upper compaction portion 110a.

A lower connecting plate 116 is formed at a lower portion of the upper body 111 where the rotary pressing hole 118 is formed to connect the intermediate length adjusting unit 120 to the intermediate body adjusting unit 120 and the intermediate length adjusting unit 120 and anchor bolts So that they are connected and connected to each other.

The inner reinforcing plate 114 is formed on the upper surface of the lower connecting plate 116 and inside the lower portion of the upper body 111 where the pressing hole 118 is formed.

The compaction apparatus 100 of the present invention has a limited length because the length of the upper compaction unit and the lower compaction unit are not greatly influenced by the depth depending on the formation depth of the drilled pile of the field so that the upper compaction unit and the lower compaction unit can freely The intermediate length adjusting unit 120 having various extension lengths can be selected and used according to the depth of the drilled pile.

The intermediate length adjusting unit 120 includes an intermediate body 121 and upper and lower intermediate connecting plates 122 and 123 as shown in FIG.

The middle body portion 121 may be made of H-shaped steel or steel pipe having an arbitrary length and may have the same cross section and members as the upper compaction portions 110 and 110a.

The upper and lower intermediate connection plates 122 and 123 are formed on the upper and lower portions of the intermediate body 121, respectively.

First, the upper intermediate connecting plate 122 is used for connecting with the upper compaction unit 110, and the lower intermediate connecting plate 123 is used for connecting with the lower compaction unit 130, which will be described later.

The upper intermediate connecting plate 122 may be formed in the form of a plate formed on the upper surface of the middle trunk 121 and may have a larger cross sectional area than the middle trunk 121, 116 and are connected to each other by means of bolts, nuts, welding, or the like.

An inner reinforcing plate 124 is formed on the inner upper end of the middle body portion 121 for reinforcement of the upper intermediate connecting plate 122 and a lifting loop 125 for lifting the intermediate length adjusting portion 120 is formed in the upper middle And further formed between the connecting plate 122 and the outer circumferential surface of the intermediate body 121.

Next, in the case of the lower intermediate connecting plate 123, a plate member formed on the bottom surface of the middle trunk portion 121 may have a larger sectional area than that of the middle trunk portion 121, So that they are brought into contact with the connecting plate 312 and are connected to each other by using bolts and nuts.

An inner reinforcing plate 124 is formed on the inner side of the lower end of the middle body 121 to reinforce the lower intermediate connecting plate 123 and an outer reinforcing plate 126 for reinforcing the lower intermediate connecting plate 123, As shown in Fig.

The lower compaction unit 130 is connected to a lower portion of the intermediate length adjusting unit 120 and has a function of removing a residual slime formed at a distal end of the perforation hole.

That is, the lower compaction unit 130 includes a lower body 131, an upper connecting plate 132, and a lower compaction plate 133.

The upper body part 111 of the upper compaction part 110 and the middle body part 121 of the intermediate length adjusting part 120 are made of the same material as the lower body part 131, The cross section and member may be used.

The upper connecting plate 132 is used to connect the lower body 131 to the lower intermediate connecting plate 123 of the intermediate length adjusting unit 120.

The upper connection plate 132 is connected to the lower intermediate connection plate 123 by a bolt or the like while being in contact with the lower intermediate connection plate 123 in the form of a plate fixed to the upper surface of the lower body 131 by welding or the like.

An inner reinforcing plate 134 is formed on an inner upper end of the upper connecting plate 132 and a lifting loop 136 is formed on the outer peripheral surface of the upper connecting plate 132 together with the inner reinforcing plate 134, So that the lifting of the part 130 is enabled.

The lower compaction plate 133 receives the load due to the compaction, the weighed, and the rotational press-fitting, and compresses and removes the residual slime formed inside the tip of the perforation hole. That is, by using a compaction device, the tip end residual slime of the sharply inserted pile is agitated with the tip fixation fluid, and tightly adhered to the relaxed ground to increase the tip end support force.

As shown in FIG. 2B, the lower compaction plate 133 may have a circular, rectangular, or polygonal shape as a plate shape, and the compaction support shape may be a plate shape, a projection shape, a stiffener grid And the like can be applied.

Accordingly, the compaction apparatus 100 of the present invention can be used as a compaction apparatus by separately preparing the upper compaction unit 110, the intermediate length adjustment unit 120, and the lower compaction unit 130, A load due to the compaction, a putter and a rotary press-fitting is received, and the residual slime formed inside the end of the perforation hole is compressed and removed to compose the end of the perforation hole.

[Method of piling hollow casting using compaction equipment]

FIGS. 3A to 3F show a flow chart of a cast-in-place piling method using the compaction apparatus of the present invention.

First, as shown in FIG. 3A, for the purpose of constructing a ground drilled pile for securing the basic safety of civil engineering and building structures, a drilling hole (H) is drilled using a drilling machine (200) An external casing (not shown) is installed.

The diameter, spacing, and depth of the perforation hole H vary depending on the scale and load conditions of the structure. After the perforation, the end fixation fluid is injected. When the perforation hole is excavated, the excavated soil is introduced into a casing loading device And is discharged to the outside of the perforation hole (H).

Perforation Hole (H) Once the excavation is completed, residual slime is deposited on the bottom of the perforation hole due to soil and rock fragments generated during excavation of the ground.

Next, as shown in FIG. 3B, the compaction apparatus 100 for adjusting the residual slime of the cast-in-place pile according to the present invention and improving the bearing capacity is adjusted according to the depth of the casted pile and inserted into the perforation hole using the perforator or the crane .

The compaction apparatus 100 includes an upper compaction unit capable of transmitting an external load (such as a compaction, a putter, a rotary press, etc.), an intermediate length adjustment unit connected to the upper and lower compaction units, and a lower compaction unit And the lower end of the upper compaction unit 110 is pushed by the lower compaction unit as the upper compaction unit 110 is turned, swung or pushed in.

Referring to FIG. 3c, it can be seen that the compaction and the strokes are proceeding.

Next, as shown in FIG. 3D, after the residual slime is removed by the compaction apparatus 100, the compaction apparatus 100 is lifted from the perforation hole by using a lifting apparatus such as a separate crane, Install it.

After installing the reinforcing net 300, the concrete is poured as shown in FIG. 3E. The reinforced net is pushed into the reinforcing net considering the structure and the ground conditions, thereby securing a certain end bearing capacity through secondary compaction.

Next, as shown in FIG. 3F, the outer casing 400 is pulled out using a perforator, and the head of the exposed drilled pile A is cleaned.

As a result, it can be seen that the present invention uses the perforator for constructing the existing pile as it is, and more effectively solves the residual slime process, which is a problem in the construction of the cast-in-place pile using the compaction apparatus 100.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: compaction device
110: upper compaction part 110a: compaction device for rotary pressing
111: upper body part 112: upper compaction board
113: upper reinforcing plate 114: inner reinforcing plate
115: outer reinforcing plate 116: lower connecting plate
117: Lifting ring 118: Rotating indentation hole
120: intermediate length adjusting part 121: middle body part
122: upper intermediate connecting plate 123: lower intermediate connecting plate
124: inner reinforcing plate 125: lifting ring
130: lower compaction part 131: lower body part
132: upper connecting plate
133: lower compaction plate 134: inner reinforcing plate
200: perforator

Claims (6)

(a) a perforation hole is formed in the ground using a perforator,
(b) After inserting the compaction apparatus 100 into the perforation hole by using the perforator as it is, the distal end residual slime formed at the time of forming the perforation hole is agitated with the tip fixing solution and is tightly contacted with the relaxed ground, (100) is pulled out from the perforation hole,
(c) constructing a drilled hole (H) in which the residual slime is removed by compression,
The compaction apparatus 100 of the step (b) is for compaction of the perforation hole of the casting pile of the field drilling apparatus. The compaction apparatus 100 is a part to which a load due to compaction and a putter is directly applied, The upper compaction unit 110 and the lower compaction unit 130 connected to each other and connected to the upper compaction unit 120 are vertically assembled and connected to each other by the lower compaction unit as the upper compaction unit 110 is put, The slime is first collapsed,
After installing the reinforcing net (300), the concrete is laid. Considering the structure and the ground conditions, the reinforcing net is inserted and the second compaction is carried out to secure further supporting capacity.
The lower compaction unit 130 has a function to remove the residual slime formed at the distal end of the perforation hole. The lower compaction unit 130 includes a lower body 131, An upper connecting plate 132 and a lower compaction plate 133. The lower body 131 uses an H-shaped steel or steel pipe having a predetermined length, The upper intermediate connecting plate 123 is connected to the lower intermediate connecting plate 123 by a welding or the like on the upper surface of the lower body 131 and is in contact with the lower intermediate connecting plate 123, And the lower compaction plate 133 receives the load due to the compaction, the face, and the rotation, and receives the load from the lower compartment 131 in the form of a plate for pressing and removing the residual slime formed inside the end of the perforation hole. A larger cross-sectional area, a flat plate, a projection, Steel material, and to use the grid-shaped plate member,
The middle length adjusting unit 120 includes an intermediate body 121 and upper and lower intermediate connecting plates 122 and 123. The intermediate body 121 is formed of an H- The plate 122 is used for connection with the upper compaction unit 110 and the lower intermediate connection plate 123 is used for connection with the lower compaction unit 130. The length of the compaction unit can be adjusted A method of casting piles using a compaction device. The method according to claim 1,
The upper compaction unit 110 of the compaction apparatus includes an upper body 111, an upper compaction plate 112, and an upper reinforcing plate 113,
The upper body part 111 is a steel pipe or an H-shaped steel material, and an upper compaction board 112 is fixedly installed on an upper surface of the upper body part 111. The upper body part 111 serves to transmit a load due to compaction and a putter to an intermediate length adjuster 120, A lower connection plate 116 in the form of a plate is formed on the bottom surface of the portion 111 so as to be connected to the intermediate length adjusting portion 120,
The upper compaction plate 112 is a plate member fixed to the upper surface of the upper body 111 by welding or the like,
The upper reinforcing plate 113 is used to prevent the upper compaction plate 112 from being damaged by a load due to compaction and a putter, and a method of casting a pile using a compaction device using an elastic rubber plate. The method according to claim 1,
The upper compaction unit 110 of the compaction apparatus is a rotary compaction upper compaction unit 110a. The upper compaction unit 110a for rotary pressing is composed of an upper body 111 having a rotary pressing hole 118, A connecting plate 116 and an inner reinforcing plate 114,
The upper compaction part for rotary press-fit 110a is rotated by a jig in a rotary press-fit hole 118 formed to penetrate the upper body part 111 to form an upper body part 111 And the lower compaction unit 130 has a function of transmitting the rotational force in the perforation hole. delete delete The method according to claim 1,
The construction of the cast-in-place pile in the step (c) is performed by inserting reinforcing net into the perforation hole, and then placing the concrete so that only the inserted reinforcing bar is embedded.

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