KR20130013899A

KR20130013899A - Extended pile

Info

Publication number: KR20130013899A
Application number: KR1020110075815A
Authority: KR
Inventors: 이대동
Original assignee: 이대동
Priority date: 2011-07-29
Filing date: 2011-07-29
Publication date: 2013-02-06

Abstract

PURPOSE: A leading end extended pile is provided to perform the insertion work of a pile even with the small diameter of a bore hole, thereby reducing the construction cost and period, and preventing the contact of the inner surface of the bore hole and an extension member. CONSTITUTION: A leading end extended pile includes a pile main body(100), an intermediate member(200), and multiple extension members(300), a diagonal direction guide unit(400) and a bottom plate member(500). The intermediate member is combined with the lower part of the main body, formed with having a trapezoid structure to consist of slopes on both sides of the bottom surface and a mounting hole(201) in a core part. The extension member is installed to be extended by driving in a radial direction from the intermediate member to the outside, and composed inside of a slope corresponding to the slope of the intermediate member. The diagonal direction guide unit guides the radial extension drive of the multiple extension members. The bottom plate member is installed to be moveable upward and downward corresponding to the intermediate member.

Description

Extension File {EXTENDED PILE}

Field of the Invention [0002] The present invention relates to a civil engineering field, and more particularly, to a file structure.

A pile is a basic structure that is constructed to transmit a load of an upper structure to the ground, and is generally designed as a compression member under the assumption that only a compressive force is applied.

Recently, in order to increase the tip bearing capacity of the pile, research and construction on the tip-extended pile that combines the expansion plate having a larger width than the width of the pile has been actively conducted.

Such conventional tip-extended piles generally take a method of coupling the extension plate 20 made of steel or the like to the bottom of the pile body 10 (FIG. 1).

By the way, the conventional tip-extended pile had the following problems because it must be inserted into the drilling hole in the state that the expansion plate 20 is coupled to the bottom of the main body 10.

First, the drilling diameter (inner diameter of the drilling hole) should be larger than the general pile, which leads to an increase in construction cost and period.

Second, in the case of inserting the tip-extension pile in a state where the drilling diameter is not sufficiently secured, the inner surface of the drilling hole and the expansion plate are in contact with each other, which makes the operation difficult and the breakage of the expansion plate is likely to occur.

The present invention has been derived to solve the above problems, it is possible to reduce the construction cost and period by inserting the file even if the drilling diameter is small, and stable construction by preventing the inner surface of the drilling hole and the contact of the expansion member It is possible, and the object of the present invention is to present a tip-extended pile that can obtain a larger tip bearing capacity than conventional in the drill holes of the same diameter.

In order to solve the above problems, the present invention is a pile main body formed to be buried underground; Coupled to the lower end of the main body 100, the cross section of the lower portion 220 is formed to have a trapezoidal structure having a narrow width of the lower side compared to the upper side, the inclined surface is formed on both sides of the bottom surface, the installation hole 201 The intermediate member 200 is formed; A plurality of expansion members 300 installed radially outwardly with respect to the intermediate member 200 and having an inclined surface corresponding to the inclined surface of the intermediate member 200 therein; An inclined direction guide part 400 coupled to the intermediate member 200 and the plurality of expansion members 300 and configured to guide radial expansion driving of the plurality of expansion members 300; An upper side of the bottom plate portion 510 to be inserted into the bottom plate portion 510 formed to cover the lower portion of the intermediate member 200 and the plurality of expansion members 300 and the installation hole 201 of the intermediate member 200. In addition to having an extended portion 520 is formed to extend, the bottom plate member 500 is installed to enable the vertical drive with respect to the intermediate member 200; presents a tip-extension pile, characterized in that it comprises a.

The bottom plate portion 510 is preferably formed in a disc shape.

It is preferable that the edge jaw portion 310 protrudes downward from the bottom edge of the expansion member 300 so as to form the same plane as the bottom surface of the bottom plate portion 510 in the state where the bottom plate member 500 is raised.

The inner end of the edge jaw 310 is preferably formed in an arcuate longitudinal section.

Between the installation hole 201 of the intermediate member 200 and the extension portion 520 of the bottom plate member 500, a downward drive limiting member that allows only the up drive of the bottom plate member 500 and restricts the down drive ( 600 is preferably installed.

The installation hole 201 is formed so that the width is gradually narrowed from the upper side to the lower side, the plurality of wedge members 610 are coupled to each other mounted to surround the extension 520, the downward drive restriction member 600. It is preferable to include.

It is preferable that a stopper member 202 is installed on the upper portion of the installation hole 201 to prevent the downward driving restricting member 600 from being separated.

It is preferable that the through hole 501 is formed in the vertical direction of the bottom plate portion 510 and the extension portion 520 of the bottom plate member 500.

The lower portion 220 of the intermediate member 200 has a longitudinal cross section having a polygonal structure, and the inclined surface of the expansion member 300 and the inclined surface of the intermediate member 200 are preferably formed to be in flat contact with each other.

The inclined direction guide portion 400 is formed in a radial structure toward the outside on the inclined surface of the expansion member 300, a plurality of inclined direction guide grooves 410 formed to have a lower width than the upper side; It is preferable to include; the inclined direction guide protrusion 420 is formed in the inclined surface of the intermediate member 200 to be inserted into the inclined direction guide groove 410, and the width of the lower side is wider than the upper side; Do.

The inclined direction guide portion 400 is formed in a radial structure toward the outside on the inclined surface of the intermediate member 200, a plurality of inclined direction guide grooves 410 formed in a narrower width than the upper side; It is preferable to include; the inclined direction guide protrusion 420 is formed in the inclined surface of the expansion member 300 to be inserted into the inclined direction guide grooves 410, the lower side is narrower than the upper side is formed; Do.

The longitudinal section of the expansion member 300 is preferably formed in a fan shape.

The upper portion 210 of the intermediate member 200 is preferably a disk-shaped structure corresponding to the longitudinal section of the main body 100.

The outer diameter of the upper portion 210 of the intermediate member 200 is formed larger than the outer diameter of the body 100, the outer diameter in the expanded state of the plurality of expansion member 300 is the upper portion of the intermediate member 200 It is preferable that it is formed large compared with the outer diameter of 210.

The present invention is possible to reduce the construction cost and period by inserting the file even if the drilling diameter is small, and stable construction is possible by preventing the inner surface of the drilling hole and the expansion member, and compared to the conventional in the drill hole of the same diameter An extended tip file is provided to obtain greater tip bearing capacity.

1 is a block diagram of a conventional tip extended file.
2 shows an embodiment of the present invention,
2 is a sectional view of a first use state of the first embodiment of the pile;
3 is a sectional view of a second use state of the first embodiment of the pile;
4 is a perspective view of a first use state of the first embodiment of the pile;
5 is a perspective view of a second use state of the first embodiment of the pile;
6 is a bottom view of a first use state of the first embodiment of the pile;
Fig. 7 is a bottom view of a second use state of the first embodiment of a pile.
8 is a perspective view of an intermediate member.
9 is a perspective view of the expansion member;
10 is a perspective view of a first embodiment of a bottom plate member;
11 is a perspective view of the downward driving restricting member.
12 is a side view of the first embodiment of the inclined guide portion;
13 is a side view of a second embodiment of the inclined guide portion;
Fig. 14 is a sectional view of a first use state of a second embodiment of a pile.
Fig. 15 is a sectional view of the second use state of the second embodiment of the pile.
16 is a perspective view of a second embodiment of a bottom plate member;

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

As shown in FIG. 2 or below, the tip-extended pile according to the present invention basically includes a pile main body 100 formed to be buried in the ground; Coupled to the lower end of the main body 100, the cross section of the lower portion 220 is formed to have a trapezoidal structure with a narrow width of the lower side than the upper side, the inclined surface is formed on both sides of the bottom, the installation hole 201 in the core The formed intermediate member 200; A plurality of expansion members 300 installed radially outwardly with respect to the intermediate member 200 and having an inclined surface corresponding to the inclined surface of the intermediate member 200 therein; An inclined guide part 400 coupled to the intermediate member 200 and the plurality of expansion members 300 and configured to guide the radial expansion driving of the plurality of expansion members 300; A bottom plate portion 510 formed to cover the lower portion of the intermediate member 200 and the plurality of expansion members 300 and extending upwardly of the bottom plate portion 510 to be inserted into the installation hole 201 of the intermediate member 200. It is provided with an extension portion 520, and the bottom plate member 500 is installed to enable the vertical drive with respect to the intermediate member (200).

That is, instead of using a fixed plate having a fixed structure as in the related art, by using a plurality of extension members 300 which are guided by the inclined direction guide part 400 and can be driven in and out, the insertion of the file into the drilled hole There is a plurality of expansion member 300 to be inwardly folded state (Fig. 2, 4, 6), the intermediate member 200 and the interaction of the expansion member 300 to reach the bottom surface of the drilling hole (by the inclined surface By pushing out), the plurality of expansion members 300 are protruded outward so as to be in an unfolded state (FIGS. 3, 5, and 7).

Therefore, the following effects can be obtained.

First, even if the drilling diameter (the inner diameter of the drilling hole) is not made larger than the general pile, the insertion work for the drilling hole is possible, thereby reducing the construction cost and period.

Second, since the expansion member is in a folded state during the insertion of the file to the drilling hole, it is possible to prevent the inner surface of the drilling hole and the contact of the expansion member, the operation is easy and can prevent the expansion member from being damaged.

Third, since the file can be inserted into the drilled hole, the tip extension structure can be formed later by the expansion of the expansion member, and thus, a larger tip bearing force can be obtained in the drilled hole of the same diameter as compared with the conventional one.

The middle member 200 may be integrally formed at the bottom of the pile body 100, but when installed to be detachable at the bottom of the body 100, only the intermediate member 200 without modifying the structure of the existing pile. ) Is combined with the bottom of the pile is an advantage that the pile according to the present invention can be easily assembled in the field and the like.

However, the expansion members 300 are opened therebetween with expansion, and the support force of the tip of the pile is proportional to the width of the tip (bottom) of the pile (the width of the bottom of the expansion member and the center member), and thus the above-mentioned space Will adversely affect the tip bearing capacity.

Therefore, the bottom plate portion 510 formed to cover the lower portion of the intermediate member 200 and the plurality of expansion members 300, and extends to the upper side of the bottom plate portion 510 to be inserted into the installation hole 201 of the intermediate member 200. When installing the bottom plate member 500 having the extension part 520 formed to be able to drive up and down with respect to the intermediate member 200, the bottom plate portion even if a plurality of expansion member 300 is expanded to open between them Since 510 covers this gap, there is an effect that the tip holding force can be increased by increasing the width of the tip (bottom) of the pile (Figs. 5 and 7).

On the bottom edge of the expansion member 300, the edge jaw portion 310 protrudes downward to form the same plane as the bottom surface of the bottom plate portion 510 in the state where the bottom plate member 500 is raised (the expansion member is extended). It is preferable to take the configuration for the stability of the structure (Figs. 3, 5, 7, 9).

It is preferable that the bottom plate portion 510 is formed in a disk-shaped structure for structural stability, and the inner end of the edge jaw 310 is formed in an arcuate longitudinal section to correspond thereto.

When the tip-extension pile of the above-described structure is inserted into the drilling hole and driven from the top, the bottom plate member 500 vibrates up and down by the impact, and the vertical vibration is the bottom plate member 500 and the intermediate member 200. ) Can cause problems such as breakage and separation.

In order to prevent this, between the installation hole 201 of the intermediate member 200 and the extension portion 520 of the bottom plate member 500, only the downward drive restriction of the bottom plate member 500 and restricts the downward drive. It is preferable to take the structure in which the member 600 was provided.

In such a configuration, even when the tip-extended pile is inserted into the drilling hole and driven from the top, the bottom plate member 500 only moves upward, and thus, the bottom plate member 500 and the intermediate member 200 by the vibration as described above. This can prevent problems such as breakage and separation.

Specifically, the installation hole 201 is formed so that the width becomes narrower gradually from the upper side to the lower side, the plurality of downward driving limiting member 600 is coupled to each other mounted to surround the extension portion 520 of the bottom plate member 500. It may take the configuration including the wedge member (610: cone) of (Fig. 2, 3, 11).

In this case, the plurality of wedge members 610 coupled by the rubber ring 611 or the like allows the upward movement of the stopper member 700, but the downward movement is limited by the wedge action, so that it is coupled with the stopper member 700. It is to prevent the downward behavior of the bottom plate member 500.

After the downward driving restricting member 600 is installed, it is preferable to install a stopper member 202 on the upper part of the installation hole 201 in order to prevent the upward movement thereof (Fig. 2, 3).

During the operation of inserting the pile into the drilling hole, when the plurality of expansion members 300 are folded inward, the upper surface of the bottom plate 510 of the bottom plate member 500 and the bottom surface of the intermediate member 200 are spaced apart from each other. (FIG. 2).

In this state, when the bottom surface of the bottom plate portion 510 of the bottom plate member 500 comes into contact with the bottom surface of the drilled hole, the intermediate member 200 pushes the plurality of expansion members 300 outward by the weight of the pile. The expansion member 300 is in an unfolded state, and the top surface of the bottom plate portion 510 of the bottom plate member 500 and the bottom surface of the intermediate member 200 are in contact with each other to form a tip extension structure (FIG. 3).

Here, in order for the sludge existing at the bottom of the drilling hole to be smoothly discharged to the top, and the bottom plate portion 510 of the bottom plate member 500 to stably contact the bottom surface of the drilling hole, the bottom plate portion of the bottom plate member 500 ( 510 and the through portion 201 in the core portion of the extension portion 520 is preferably formed so that the sludge is discharged to the upper through it (Fig. 14, 15, 16).

In order to push the expansion member 300 to the outside by the rise of the intermediate member 200, the cross section of these contact surfaces (the inclined surface of the expansion member 300 and the inclined surface of the intermediate member 200) should be inclined structure In the case where the contact surface has a curved structure like a cylindrical pile, the above-described extension of the expansion member 300 does not occur smoothly because the upper and lower curvature radii are different.

In order to solve this problem, both the inclined surface of the expansion member 300 and the inclined surface of the intermediate member 200 are formed to be flat, so that the expansion driving of the expansion member 300 by the interaction with the intermediate member 200 is smooth. It is preferable to make it happen (Fig. 8, 9).

Specifically, for this purpose, the lower portion 220 of the intermediate member 200 is formed in a longitudinal cross-section of the polygonal structure (triangle, square, hexagon, etc.), the cross-section is formed in a trapezoidal structure with a wide width of the lower side compared to the upper side (Fig. 8 ).

That is, when the longitudinal section of the intermediate member 200 has a circular structure, the inclined surface is curved, which causes the above-described problem, so that the longitudinal section has a polygonal structure so that all the inclined surfaces are formed flat.

The inclined surface of the expansion member 300 is formed in an inclined structure whose cross section corresponds to the outer surface of the above-described intermediate member 200 (Fig. 9).

The longitudinal section of the expansion member 300 is preferably formed in a fan-like structure in which the outer end forms an arc, so that the plurality of expansion members 300 take the shape of a disk as a whole.

The inclined guide part 400 combines the intermediate member 200 and the plurality of expansion members 300, and simultaneously guides radial expansion driving of the plurality of expansion members 300. .

It is formed in a radial structure toward the outside on the inclined surface of the expansion member 300, a plurality of inclined direction guide grooves 410 formed to have a lower width than the upper side; Implemented by the configuration including; inclined direction guide protrusion 420 is formed protruding to the bottom of the intermediate member 200 to be inserted into the inclined direction guide groove 410, the width of the lower side is wider than the upper side 2 to 7, FIG. 12.

The inclined direction guide part 400 has a plurality of inclined direction guide grooves 410 formed on the bottom surface of the intermediate member 200 in the radial direction toward the outside, and the width of the lower side is narrower than the upper side; Implemented by the configuration including; inclined direction guide protrusion 420 is formed in the inclined surface of the expansion member 300 so as to be inserted into the inclined direction guide groove 410, the lower side is narrower than the upper side May be (FIG. 13).

The upper portion 210 of the intermediate member 200 is a structure in which the lower portion 220 structure and the plurality of expansion members 300 described above are installed at the lower side thereof, and may be any structure as long as it is mounted at the lower end of the pile body 100. In the case where the main body 100 has a cylindrical structure, it is preferable to take a disk-shaped structure so as to correspond to its longitudinal section.

The outer diameter of the main body 100 of the upper portion 210 of the middle member 200 may be formed to be the same as the outer diameter of the main body 100, and the plurality of expansion members are further formed. When the outer diameter in the expanded state of the 300 takes the configuration formed larger than the outer diameter of the intermediate member 200, the advantage that can be achieved a wider front end extension structure stably (Figs. 2 to 7).

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It is to be understood that both the technical idea and the technical spirit of the invention are included in the scope of the present invention.

100: main body 200: intermediate member
201: through hole 210: upper part
220: lower 300: expansion member
400: inclined direction guide portion 410: inclined direction guide groove
420: inclined guide protrusion 500: bottom plate member
510: bottom plate 520: extension
600: downward drive limiting member 610: wedge member

Claims

A pile main body 100 formed to be buried in the ground;
Coupled to the lower end of the main body 100, the cross section of the lower portion 220 is formed to have a trapezoidal structure having a narrow width of the lower side compared to the upper side, the inclined surface is formed on both sides of the bottom surface, the installation hole 201 The intermediate member 200 is formed;
A plurality of expansion members 300 installed radially outwardly with respect to the intermediate member 200 and having an inclined surface corresponding to the inclined surface of the intermediate member 200 therein;
An inclined direction guide part 400 coupled to the intermediate member 200 and the plurality of expansion members 300 and configured to guide radial expansion driving of the plurality of expansion members 300;
An upper side of the bottom plate portion 510 to be inserted into the bottom plate portion 510 formed to cover the lower portion of the intermediate member 200 and the plurality of expansion members 300 and the installation hole 201 of the intermediate member 200. And a bottom plate member (500) installed so as to be capable of vertically driving with respect to the intermediate member (200).

The method of claim 1,
The bottom plate portion 510 is a tip-extended pile, characterized in that formed in a disk-like structure.

The method of claim 2,
The edge of the bottom surface of the expansion member 300, the front end portion characterized in that the edge jaw portion 310 protrudes downward to form the same plane as the bottom surface of the bottom plate portion 510 in the state in which the bottom plate member 500 is raised Expandable file.

The method of claim 3,
The inner end portion of the edge jaw portion 310 is extended end file, characterized in that the longitudinal section is formed in an arc shape.

The method of claim 1,
Between the installation hole 201 of the intermediate member 200 and the extension part 520 of the bottom plate member 500, a downward drive limiting member which allows only the up-drive of the bottom plate member 500 and restricts the down-drive ( Extended file type, characterized in that 600) is installed.

The method of claim 5,
The installation hole 201 is formed so that the width gradually becomes narrower from the upper side to the lower side,
The downward drive limiting member 600 is
Tip-extended pile, characterized in that it comprises a plurality of wedge member (610) mounted to be coupled to each other to surround the extension (520).

The method according to claim 6,
Tip expansion type file, characterized in that the stopper member 202 is installed on the upper portion of the installation hole 201 to prevent the downward drive restriction member 600 is separated.

The method of claim 1,
Tip-extension pile, characterized in that the through-hole 501 is formed in the up and down direction in the bottom plate portion 510 and the extension portion 520 of the bottom plate member 500.

The method of claim 1,
The lower portion 220 of the intermediate member 200 is formed in a polygonal longitudinal section,
The inclined surface of the expansion member 300 and the inclined surface of the intermediate member 200 is a front end extension file, characterized in that formed in a flat surface contact with each other.

The method of claim 1,
The inclined direction guide portion 400
A plurality of inclined direction guide grooves 410 formed in a radial structure on an inclined surface of the expansion member 300 and having a lower width than an upper side thereof;
An inclined guide protrusion 420 formed on the inclined surface of the intermediate member 200 so as to be inserted into the inclined guide groove 410 and guided, and having a lower width than the upper side thereof;
Extended file type, characterized in that it comprises a.

The method of claim 1,
The inclined direction guide portion 400
A plurality of inclined guide grooves 410 formed in a radial structure on the inclined surface of the intermediate member 200 toward the outside and having a lower width than the upper side thereof;
An inclined guide protrusion 420 formed on the inclined surface of the expansion member 300 so as to be inserted into the inclined guide groove 410 and guided, and having a lower width than the upper side thereof;
Extended file type, characterized in that it comprises a.

The method of claim 1,
Longitudinal extension file, characterized in that the longitudinal section of the expansion member 300 is formed in a fan shape.

The method of claim 1,
The upper portion 210 of the intermediate member 200 is a tip-extended pile, characterized in that the disk-shaped structure corresponding to the longitudinal section of the main body (100).

The method of claim 1,
The outer diameter of the upper portion 210 of the intermediate member 200 is formed larger than the outer diameter of the body 100, the outer diameter in the expanded state of the plurality of expansion member 300 is the upper portion of the intermediate member 200 A tip-extended pile, characterized in that formed larger than the outer diameter of (210).