KR101620558B1 - Composite pile using multi support plate and the construction method therefor - Google Patents

Abstract

The present invention relates to a composite pile using multiple pliers and a method of constructing the composite pile, in which crushing holes are formed in the perforation hole as a supporting layer to maximize the end support force of the hollow pile. The synthetic pile using the multiple pavement plate is composed of a front aggregate layer filled in the perforation hole; A hollow fiber inserted into the perforation hole so as to be supported on the top aggregate layer; A plurality of pliers formed in a plurality of stages on the outer circumferential surface and the bottom surface of the hollow file front end; A tip packer fixed to the multiple pressure plates and having a plurality of pressure plates accommodated therein; An upper aggregate layer filled into the perforation hole at the upper portion of the front packer; And a grouting material injected by the first injection pipe through the hollow part of the hollow fiber to the front end packer so that the multiple end effector is injected into the front end of the hollow fiber pile so as to be combined with the hollow fiber end part.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite pile using multiple piles,

The present invention relates to a composite pile using multiple piles and a construction method thereof. More specifically, the present invention relates to a composite pile using multiple pliers and a method of constructing the composite pile, which can maximize the end support force of the hollow pile inserted into the pierced hole by using crushed stone in the pierced hole as a supporting layer.

FIG. 1 is a flowchart of a method of applying a composite pile using compaction excavation.

That is, the method includes drilling and drilling a ground by rotating a casing auger to a predetermined point on a soft ground,

Filling the compaction member (10) including a crushed stone at a predetermined height under the perforated and drilled holes;

A step of dropping the charged compaction member by dropping the hammer 11, a step of filling the compaction member and compaction with a hammer a plurality of times to form a bulb of the crushed stone pile,

And penetrating the foundation pile 20 including the steel pipe pile into the upper part of the bulb and filling the cement paste between the pierced hole and the drilled hole.

In this case, the bulb of the crushed stone pile is formed and then the cement paste is filled in the bulb before penetrating the prepared pile.

This has the effect of being able to take advantage of both the stone pile and the deep foundation.

However, although the tip of the existing pile (steel pipe pile) is inserted into the upper surface of the crushed stone pile, there is a limit to optimizing the section through securing the end bearing capacity of the existing pile.

For example, in the case of construction around a building, if the cross section of the existing pile is enlarged, it becomes impossible to use the small equipment and its efficiency becomes poor. If too small pile is used, a large number of perforation holes and existing piles should be used. It is because it can not be done.

Accordingly, the present invention is a synthetic pile in which a pile aggregate such as a crushed stone and a hollow pile are combined with cement milk to securely secure the end supporting force, thereby minimizing the cross-section of the hollow pile, The present invention provides a composite pile using multiple piles, which is advantageous for securing the grounding force, and a method for providing the composite pile.

According to an aspect of the present invention,

First, the piercing hole is filled with pile aggregate such as crushed stone to form a strand aggregate layer. In particular, in the case of the soft ground, even if the depth of the perforation hole is deepened, there may be a case where it is impossible to confirm the support layer (for example, weathering layer) supporting the tip of the hollow pile. And serves as a supporting layer capable of reliably supporting the tip.

Secondly, in order to support the bottom end of the tip end of the hollow fiber on the end aggregate layer, a pliable plate integrally formed on the tip end of the hollow pile is used. At this time, the pressure plates are spaced apart from each other along the outer circumferential surface of the hollow pile tip to be formed in multiple stages.

Accordingly, the pressure plates (multiple pressure plates) formed at the ends of the hollow fiber in multiple stages are combined and integrated with each other by using a grouting material such as cement milk, so that they act as enlarged bulbs at the tip of the hollow pile.

Thirdly, the grouting material is supplied using a front packer accommodated so that the multiple pressure plates are positioned inside, and the grouting material is filled in the hollow pile (CFT pile) by the first injection pipe inserted in the hollow pile, The grouting material filled through the through holes formed in the pile is filled in the front packer, and the front packer is inflated. Accordingly, the multiple pressure plates inside the front packer are integrally synthesized by the grouting material filled in the front packer.

At this time, if the multiple pliers are integrally formed at the distal end of the hollow pile by the grouting material, the hollow pile serves as a kind of extended distal end at the distal end of the hollow pile.

Fourth, the pile aggregate is added to the upper part of the front end packer filled with grouting material, and the pile aggregate and the grouting material are mixed with each other using a separate injection pipe, thereby synthesizing the hollow pile, grouting material and pile aggregate So that the pile load can be sufficiently secured.

To this end, the composite pile using the multi-

A skirt aggregate layer filled in the perforation hole; A hollow fiber inserted into the perforation hole so as to be supported on the top aggregate layer; A plurality of pliers formed in a plurality of stages on the outer circumferential surface and the bottom surface of the hollow file front end; A tip packer fixed to the multiple pressure plates and having a plurality of pressure plates accommodated therein; An upper aggregate layer filled into the perforation hole at the upper portion of the front packer; And a grouting material injected by the first injection pipe through the hollow portion of the hollow fiber to the front end packer so that the multiple end effector is injected into the front end of the hollow fiber pile so as to be combined with the hollow pile front end portion.

The aggregate material of the present invention can be relatively low-cost aggregate materials such as the front aggregate layer, the extensible front end portion, the synthetic pile portion and the crush stone, and is filled with the CFT pile using the cement milk as the grouting material, It is possible to optimize the section of the hollow pile and to synthesize the synthetic pile section with the hollow pile to increase the pile section, so that it can be used effectively as a synthetic pile.

1 is a view showing a construction sequence of a composite pile using a conventional crushed stone aggregate layer,
FIG. 2A is a perspective view of the composite pile using the multiple pressure plate of the present invention,
FIG. 2B is a perspective view of the multiple pressure plate of the present invention,
FIGS. 3A, 3B, and 3C are flowcharts of a method of constructing a synthetic pile using the multiple pressure plate 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.

[Synthetic pile (100) using multiple pressure plates (130)]

FIG. 2A is a perspective view of a composite pile 100 using the multiple pavement plate of the present invention, and FIG. 2B is a perspective view of the multiple pavement plate of the present invention.

2A, the composite pile 100 using the multi-ply plate may have a structure in which a front aggregate layer 110, a hollow pile 120, a multiple pile 130, a front packer 140, an upper aggregate layer 150, (160).

The front aggregate layer 110 is an aggregate layer filled in the front end of the perforation hole 300 previously formed in the ground to a predetermined thickness.

The end aggregate layer 110 serves as a supporting layer for securing the tip end supporting force of the synthetic pile according to the present invention and the grouting material 160 is injected between the aggregate and the aggregate, .

The grouting material 160 is injected by a first injection pipe 210 installed to be inserted into the hollow fiber 120, and is a cement paste. This will be described later.

It is understood that the hollow pile 120 is made of steel pipe pile and the bottom surface is supported on the top surface of the aggregate layer 110. The bottom pile 120 can be stably supported by the lowermost pile 131 described below.

The hollow fiber sheet 120 is supported at its tip end by the aggregate layer 110, and the multiple pressure-sensitive adhesive sheet 130 is integrally formed at the distal end thereof to form a tip extension part.

And a front packer 140 for synthesizing the multiple pressure plates 130 with the grouting material 160 is installed.

At this time, if the grouting material 160 is filled in the hollow portion and the hollow pile serves as the CFT pile, it can be said that the grouting material 160 is for securing the stiffness of the synthetic pile with a small cross-section.

Accordingly, the hollow fiber 120 uses a hollow hollow fiber, and a side hole 121 is formed at the tip of the hollow fiber 120 so that the grouting material 160 filled in the hollow fiber 120 is filled in the end packer 140 through the through hole.

Next, the multiple pressure plate 130 includes a lowermost pressure plate 131, a top pressure plate 132, and an intermediate pressure plate 133. [

The multiple pressure plates 130 are integrally formed at the tip end of the hollow pile 120 and the lowermost pail 131 is formed by a method such as welding on the bottom surface of the hollow pile 120 using a circular plate having an injection hole 135 formed therein ,

The uppermost pressure plate 132 and the intermediate pressure plate 133 penetrate the hollow pile 120 and are integrally welded to the hollow pile 120 as a steel plate with a ring-shaped plate.

The reason why such pressure plates are separated from each other at the tip end portion of the hollow pile by integrating them is to increase the end supporting force of the hollow pile.

That is, even if the cross section of the hollow pile is supported by the aggregate layer 110, it is limited in securing the end support force. Therefore, the cross sectional area of the hollow pile is increased in order to secure the expanded cross sectional area.

The diameter of the pressure plates may be larger than the diameter of the hollow pile, but the cross-section can be supported on the upper surface of the front aggregate layer.

One such cushioning plate may be provided on the bottom surface of the hollow pile, but they are spaced upward and downward to be installed in the hollow pile and are combined with the grouting material 160 to reinforce the grouting material 160 formed of cement paste, The tip can act as an expanding bulb and a tip extension.

In FIG. 2A, it is understood that the multi-ply pressure plate 130 is provided with one lowermost pressure plate 131, one uppermost pressure plate 132 and one middle pressure plate 133. However, the number of the intermediate pressure plates 133 is not limited except for the lowermost pressure plate 131 and the uppermost pressure plate 132.

Further, it can be understood that the lowermost pressure plate 131 located at the tip of the hollow fiber 120 can be prevented from deformation and breakage due to the end supporting force by the reinforcing plate 134 (rib).

The front packer 140 serves as a receptacle for synthesizing the grouting materials 160 to the multiple pressure plates so that the tip of the hollow fiber 120 can act as an extended bulge and a tip bulge.

It is noted that the pack pack 140 has a lower end and an upper end fixed between the uppermost and lowermost pressure plates 131 and the upper and lower surfaces of the uppermost pressure plates 132b and the intermediate pressure plate 133 is accommodated therein have.

When the grouting material 160 is supplied by the side holes 121 of the hollow pile, the grouting material 160 expands and comes into contact with the perforation hole 300. When the grouting material 160 is partially leaked, grouting material is injected into the perforation hole 300 The end packer 140 is preferably formed of a pack made of a fabric.

The upper aggregate layer 150 is formed for forming a synthetic pile portion of the perforation hole 300 after the extended tip portion is formed at the distal end of the hollow pile by the grouting material 160 injected into the front end packer 140 .

The upper aggregate layer 150 is filled with crushed stones or the like as a finishing plate as a finishing aggregate layer 110 and filled up to the upper end of the perforation hole to form a space between the hollow pile 120 and the perforation hole 300 It can be seen that it plays a role of filling.

In this case, the filled aggregate is synthesized with the grouting material 160 using a separate injection pipe to be formed around the hollow pile 120, so that the hollow pile 120 and the synthetic aggregate act as one body, The cross section of the hollow pile 120 becomes almost the same as the diameter of the perforation hole, which is more advantageous in securing the stiffness as a synthetic pile.

The grouting material 160 is injected into the front aggregate layer 110, the hollow portion of the hollow fiber 120 and the front end packer 140 by the first injection pipe 210, The cement paste is injected into the upper aggregate layer 150. Cement paste is a mixture of cement and water which is economical and easy to inject and penetrate between crushed stone such as lower aggregate layer and upper aggregate layer.

Referring to FIG. 2B, the first injection pipe 210 is inserted in the work space above the perforation hole 300 in the hollow pile 120, passes through the hollow portion of the hollow pile, passes through the inside of the end packer, So as to penetrate through the injection hole 135 of the semiconductor device 100.

The grouting material 160 thus injected is first injected into the front aggregate layer 110 by the injection hole 135 through the first injection pipe 120 and is injected into the front aggregate layer in an amount After the injection, the first injection tube 210 is pulled up to the upper end of the injection hole and injected into the front end packer 140 through the side hole 121 while being injected into the hollow portion of the hollow end of the hollow pile 120.

In this process, the multiple pressure plates 130 are combined with the hollow fiber by the grouting material 160 by the end packer 140 so as to act as extended tip portions or extended bulbs.

When the final end packer 140 is expanded, the grouting material 160 is injected so that the first injection pipe 210 is filled with the hollow pile hollow portion so that the hollow pile 120 functions as a CFT pile. It can be said that the grouting material 160 is injected into the steel pipe pile and synthesized with each other.

At this time, an upper stopper 122 is further installed in the upper hollow portion of the hollow pipe 120 so that the grouted material injected does not flow back to the outside of the hollow pipe. It can be seen that the upper starter is also in the form of a ring which is installed through the hollow fiber 120 as a kind of gasket.

The second injection pipe 220 is for injecting the grouting material 160 injected into the upper aggregate layer 150. The second injection pipe 220 injects the grouting material 160 through the perforation hole 300 And the hollow fiber 120, and is injected into the upper aggregate layer from the tip or the like.

The upper aggregate layer 150 is integrated with each other by the grouting material and the hollow pile 120 functions as a synthetic pile together with the upper aggregate layer 150.

[Composite pile construction method using multiple pressure plates]

FIGS. 3A, 3B and 3C show a flow chart of a synthetic pile construction method using multiple pressure plates.

3A,

First, a perforation hole 300 is formed in the ground G. The perforation hole 300 may be a drilling rig equipped with an auger which is not shown.

It is understood that the inside of the tip of the perforation hole 300 is filled with crushed stone or the like and the top aggregate layer 110 is formed at a constant height.

Next, the hollow fiber 120, in which the multiple feeder plates 130, the front end packer 140, and the first injection pipe 210 are assembled, is inserted in advance on the upper surface of the front aggregate layer 110.

It can be seen that the intermediate pack is accommodated in the inside of the hollow fiber 120 of the end packer 140 and the end packer 140 is installed in the lowermost and uppermost pressure plates, The bottom end of the hollow fiber bundle 210 is located inside the front packer 140 and extends to the outside of the hollow fiber bundle via the hollow portion of the hollow fiber bundle 120.

It is also seen that the second injection tube 220 is arranged around the perforation hole 300 and the hollow pile 120 so as to extend to the top of the front packer 140 and the upper end extends outside the perforation hole 300 have.

The first injection pipe 210 and the second injection pipe 220 may be formed of rubber hoses or the like.

Next, it is understood that the upper aggregate layer 150 is filled into the perforation hole in the upper part of the front end packer so that the second injection pipe 220 is embedded. This is because it is necessary to maintain the hole in the perforation hole.

Next, as shown in FIG. 3B, the upper end stop 122 is installed in the hollow pile hollow portion at the upper end of the first injection pipe, and the pile is tilted so that the hollow pile 120 can be inserted into the end aggregate layer 110 .

3C, the grouting material 160 is injected through the first injection pipe 210 so that the inside of the front aggregate layer 110, the front packer 140 and the hollow fiber 120 are filled with the grouting material do. As a result, the tip packer 140 is inflated.

Also, the grouting material 160 is injected through the second injection pipe 220 so that the grouting material is also injected into the upper aggregate layer 150, thereby completing the final composite pile using the multiple paving plates of the present invention.

When the grouting material 160 is cured, the end aggregate layer 110 is also advantageous in securing the end supporting force as a support layer,

Also, the front packer 140 is hardened to function as a tip expanding portion and an expanding bulb while reinforcing the grouting material inside the front packer even if the length of the top packer is extended by using the inner multiple pressure plates.

In addition, the grouting material 160 injected into the upper aggregate layer 150 is a synthetic pile portion having a cross section of a synthetic pile, an upper aggregate layer in which a grouting material is hardened and a hollow pile in which a grouting material is injected, It can be seen that it is more advantageous in securing the stiffness of the synthetic pile.

In this case, the constructed composite pile head is cut so that the same height of the top surface is matched, and a head reinforcing plate (in the form of a horizontal plate) is further formed by an inclined reinforcing plate formed on the outer periphery of the head, So that the base plate can be supported by the synthetic pile of the present invention.

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: synthetic pile
110: Fibrous aggregate layer
120: hollow file
130: Multiple plates
131: Lowermost plate
132: uppermost pressure plate
133: Middle pressure plate
134: reinforcing plate
135: injection hole
140: Fleet Packer
150: Upper aggregate layer
160: Grouting material
210: first injection tube
220; The second injection tube
300: Perforated hole

Claims (10)

An end aggregate layer 110 filled in the perforation hole;
A hollow fiber (120) inserted into the perforation hole to be supported on the top aggregate layer;
A multiple pressure plate (130) formed in a multi-stage on the outer circumferential surface and the bottom surface of the hollow file front end;
A front packer (140) fixed to the multiple pressure plates and having a plurality of pressure plates accommodated therein;
An upper aggregate layer 150 filled in the perforation hole on the top packer 140; And
And a grouting material (160) injected by the first injection tube through the hollow portion of the hollow fiber pile to the front end packer (140) so as to be combined with the hollow pile front end portion in the front end packer,
A ring-shaped upper stopper 122 is formed in the upper hollow portion of the hollow pipe 120 to penetrate the hollow pipe 120 to prevent backflow of the injected grouting material.
The end aggregate layer 110 includes crushed stone and is injected with grouting material from the inside of the hollow pile through the first injection pipe 210 so that the grouting material 150 is injected into the end aggregate layer 110 and then cured.
The upper aggregate layer 150 includes a crushed stone, and a grouting material 160 is injected and cured by a second injection pipe 220 located at an upper portion of the front packer to inject a grouting material into the hollow portion to form a hardened CFT pile A composite pile using multiple pliers to form a synthetic pile together with a composite pile. delete The method according to claim 1,
The hollow pile 120 includes a steel pipe pile and a side hole 121 is formed at the tip of the hollow pile 120 to allow the grouting material 160 to be injected into the front packer 140 through the side holes. The method according to claim 1,
The multiple pressure plates 130
A lowermost pressure plate 131 formed on the bottom surface of the hollow pipe 120 and having an injection hole 135 formed therein;
An uppermost pressure plate 132 spaced upward from the lowermost pressure plate 131 so as to penetrate the hollow pile; And
An intermediate pressure plate 133 formed between the lowermost pressure plate 131 and the uppermost pressure plate 132 so as to penetrate the hollow pile; Composite pile using multiple. 5. The method of claim 4,
A front packer 140 is installed between the lowermost pressure plate 131 and the uppermost pressure plate 132 so that an intermediate pressure plate is received and a grouting material injected from a hollow file is injected into the front packer through the side holes. pile. 6. The method of claim 5,
The composite pile 140 is made of a fabric and expanded by the grouting material so as to form a tip extension portion and an extension bulb by a grouting material and a multiple pressure plate at the tip of the hollow pile. delete (a) forming a perforation hole (300) in the ground, and then filling the end aggregate layer (110) into the end of the perforation hole;
(b) a hollow pipe (120) installed so that a first injection pipe (210) is inserted into the hollow part and a multiple pressure plate (130) is integrally formed on the outer circumferential surface of the front end part and the front packer (140) ) Is supported on an upper surface of the front aggregate layer (110);
(c) filling the upper aggregate layer 150 in the perforation hole such that the second injection pipe 220 is disposed above the front packer 140 and the second injection pipe 220 is embedded;
(d) The grouting material 160 is injected into the second injection pipe 220 to inject the grouting material injected into the tip end of the hollow fiber into the front end packer through the end aggregate layer and the hollow pile, So as to form a file with CFT piles,
In the step (d), a ring-shaped upper stopper 122 is formed in the upper hollow portion of the hollow pipe 120 to penetrate the hollow pipe 120 to prevent backflow of the injected grouting material,
The end aggregate layer 110 includes crushed stone and is injected with grouting material from the inside of the hollow pile through the first injection pipe 210 so that the grouting material 150 is injected into the end aggregate layer 110 and then cured.
The upper aggregate layer 150 includes a crushed stone, and a grouting material 160 is injected and cured by a second injection pipe 220 located at an upper portion of the front packer to inject a grouting material into the hollow portion to form a hardened CFT pile A method of constructing composite pile using multiple pliers to form a synthetic pile together with pile. delete 9. The method of claim 8,
After the step (d)
Wherein the hollow pile head is cut so that a head reinforcement plate is further formed on the head portion and the head reinforcement plate is embedded in the foundation plate concrete of the building.

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