KR20140089680A - Piles for self-enlargement and construction method thereof - Google Patents

Abstract

The present invention relates to a pile installed in a hole perforated on the ground in which direct drilling is completed. An enlargement unit capable of forming a pile enlargement unit on one part is formed. The enlargement unit comprises a cutting device for cutting an enlargement part and a radial enlargement body extended by the pressure of curable joint filler. The enlargement can be performed in order for the pile enlargement unit to be formed by the cutting device and the radial enlargement body in an enlargement state. When the pile capable of enlargement is used, the pile enlargement unit can be constructed without a separate enlargement device with a standard previously planned regardless of stratum such as a solid soil layer or a rock layer.

Description

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

The present invention relates to a pile used for the use of a foundation construction or for fixing a structure, and in particular, it can be self-expanding with a light weight designed without overcutting, thereby reliably increasing the compressive supporting force and the pulling resistance of the pile To the pile.

In general, piles installed in the ground for foundation of foundation structures and for fixing of ground structures or offshore structures are designed to receive compressive force mainly at the tip. When the base width is narrow or unavoidable, piles and tensions are alternately received do.

In order to efficiently use large piles in the material, it is effective to expand the pile around the rigid pile so as to increase the allowable bearing capacity and the pullout resistance.

There have been many ways to enlarge the tip of the pile. In some cases, an irregular enlargement was formed at the tip of the pile.

In most cases of expanding the tip of the pile, it is necessary to complete the vertical drilling to the rock layer with a straight drill and to drill the end of the drilled hole with a separate drill. After that, the residual slime at the end of the hole is cleanly removed, the air hole of the diameter hole is stabilized, and concrete is poured into the installation space of the pile enlargement part. Therefore, the enlarged diameter portion reinforcing member is formed at the tip of the pile inserted into the perforation hole.

However, since the enlarged structure of the pile tip of the prior art has a large amount of equipment to be used, the amount of piercing is increased more than necessary, and it is difficult to prevent the air hole of the diameter hole from loosening or collapsing during drilling operation for expanding the end portion. It was not easy to use universally.

Furthermore, since the slime is naturally mixed in the large-diameter space where the pile enlargement part is to be formed, it is another problem that it is difficult to guarantee the quality required of the pile enlargement part.

Korean Patent No. 10-1011143 entitled " Construction method for formation of foundation part of pile tip and formation of fixed fixing part of tension member,

Therefore, the object of the present invention is to provide a pile having a diameter cutting function so that a pile enlarging part can be constructed in a pre-designed standard in a hard soil layer or a rock layer regardless of a ground layer to improve the allowable supporting force and pulling resistance of the pile installed in the ground And a method of constructing the same.

It is another object of the present invention to provide a pile having a diameter cutting function and at the same time allowing an enlarged diameter hole to be filled and filled with a joining filler material, thereby preventing the hole from being loosened or collapsed, and a construction method thereof.

It is another object of the present invention to provide a pile and a method of constructing the pile for maintaining a strength and quality comparable to products produced in factories by placing a hardenable joint filler filling an aperture hole without incorporating residual slime.

According to another aspect of the present invention, there is provided a pile installed in a pierced hole in a pierced hole, the pierced hole being capable of forming a pile enlarged portion on a part of a pile body, And a radially expanded carrier radially expanding with the pressure of the hardenable joint filler so that the pile enlargement part is formed by the cutting tool and the radially expanded carrier in the expanded state.

Further, the present invention provides a pile installed in a perforation hole in a ground in which a through hole is completed, the pile being connectable to a tip of a pile body and forming a pile enlarged portion, And a radially expanded carrier radially expanding with the pressure of the hardenable joint filler so that the pile enlargement part is formed by the cutting tool and the radially expanded carrier in the expanded state.

Further, the present invention provides a pile installed in a perforation hole in a ground through which a pierced hole is completed, the pile having a piercing hole capable of forming a pile enlarged portion on a part of a pile main body, A plurality of radially movable cutting tools disposed between the upper and lower plates, and a radially extended support which radially expands at a pressure of a curing filler material which is initially positioned in the radial support frame, Is a pile capable of its own magnification.

The present invention also provides a method of constructing a pile installed in a pierced hole in a ground through which a pierced hole is completed, comprising the steps of: piercing a pile body fitted with a piercing tool having a cutting tool and an expanding carrier, The expandable carrier is radially expanded by the pressure of the hardenable joint filler while the hardenable joint filler preliminarily provided at a predetermined amount in advance to the outside of the expandable carrier is further introduced into the expanded carrier while rotating the body of the pile, And the enlarged carrier expands radially to form a pile enlargement part. The pile enlargement part is formed by expanding the enlarged carrier while continuing to cut the enlarged diameter hole until the completion of the inflow of the joint filler.

The present invention also provides a method of constructing a pile installed in a pierced hole in a ground through which a pierced hole is completed, comprising the steps of: piercing a pile body fitted with a piercing tool having a cutting tool and an expanding carrier, And the pile body is rotated to fill the cemented joint filling material through the hose connected with the ground to the hollow expanding carrier so that the expanding carrier radially expands to the pressure of the bonding filler while the cutting tool is radially cut to the radius and the inflow of the bonding filler And the enlarged carrier is continuously filled with the enlarged diameter hole until it is finished, thereby expanding radially to form a pile enlargement part.

The present invention also provides a method of constructing a pile installed in a pierced hole in a ground through which a pierced hole is completed, comprising the steps of: piercing a pile body fitted with a piercing tool having a cutting tool and an expanding carrier, And a pile body is rotated while a separate horizontal force is exerted on the cutting tool to expand the cutting tool while radially expanding the enlarged carrier filled with the joint filling material capable of being cut and hardened to form a pile enlarged portion .

The present invention also provides a method of constructing a pile installed in a pierced hole in a ground through which a pierced hole is completed, comprising the steps of: piercing a pile body fitted with a piercing tool having a cutting tool and an expanding carrier, And the pile body is rotated while the external fluid applies internal pressure to the expanded carrier, the cutting tool pushed by the extended carrier is radially expanded and cut to a large diameter to complete the formation of the aperture hole, and the expanded carrier is filled with a hardenable joint filler material, .

The present invention also provides a method of constructing a pile installed in a pierced hole in a ground through which a pierced hole is completed, comprising the steps of: piercing a pile body fitted with a piercing tool having a cutting tool and an expanding carrier, And the pile is rotated while pushing the pile filled with the cemented filler material which can be cured by the amount considering the enlargement inside the expanded carrier, the height of the pore hole is reduced and at the same time the cutting tool is radially expanded, The enlarged carrier is continuously filled with the enlarged diameter hole and expanded radially to form a pile enlargement part.

According to another aspect of the present invention, there is provided a method of constructing a pile installed in a pierced hole in a pierced hole where a pierced hole is completed, comprising the steps of: positioning a piercing- The pile enlarging part is formed by rotating the piercing hole while filling the cementable joint filling material into the inside of the carrier, and then the pile body is connected to the piercing hole to complete the pile construction.

The present invention can reduce the construction yield of the pile because it can increase the allowable bearing capacity and pullout resistance of the pile irrespective of the type of stratum if the pile that can enlarge itself is used while filling the diameter hole immediately. Further, when a pile capable of self-magnification is used while filling the diameter hole of the present invention immediately, a separate drill for the diameter reduction is eliminated.

Further, since the cutting tool provided in a part of the pile main body is filled with a curable filler material that is hardenable in the magnifying glass while the diameter cutting is performed, there is no fear that the diameter of the diameter hole of the diameter hole is relaxed or collapsed. The cutting tool provides a pendant enlarged section of a dimension that is precisely designed without excessive cutting, so that the bearing capacity and pull resistance can be greatly increased by the minimum amount of cutting work and the minimum amount of joint filler.

Also, according to the present invention, the curable joint filler to be filled in the enlarged diameter portion can maintain the quality and strength comparable to the products produced in the factory since the residual slime in the perforation hole is not mixed. The cutting tool constituting the sharpening tool of the present invention itself can serve as a permanent reinforcing member of the enlarged portion.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view for explaining a collapse of a cavity wall of a diameter-
FIG. 2 is a view showing a configuration for forming a pile enlarged portion using a pile equipped with a quadrangular pyramid, according to an embodiment of the present invention;
FIG. 3 is a view for explaining the skeletal structure of the probe of FIG. 2,
FIG. 4 and FIG. 5 are diagrams illustrating state diagrams of various structures according to an embodiment of the present invention,
Fig. 6 is a configuration diagram of the separable-
FIGS. 7 and 8 are diagrams showing a state in which the separable spiral hole shown in FIG.
FIG. 9 is a modification of the zoom lens according to the embodiment of the present invention, FIG.
10 and 11 are views showing examples of construction of a pile capable of its own magnification according to an embodiment of the present invention.

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

Various piles installed in the ground to support or fix the structure are designed to receive compressive force mainly at the tip of the perforation. When the foundation width is narrow or inevitable, the pile may be alternately subjected to compression or tensile force or may be subjected to tensile force. Most of these piles are formed with the same diameter as the entire length of the member, and they are manufactured at the factory or made of on-site concrete structures.

If a pile with the same diameter is installed in the perforation hole with the same diameter, the construction is simple and easy, but the supporting force and the pulling resistance that can be supported by the pile are inevitably small. A pile with a large stiffness has sufficient capacity to withstand the material, but the pile is weaker than the pile and can not support it sufficiently. That is, in the case of compressed piles having the same upper and lower diameters, the area of supporting the pile at the tip of the perforation hole is only the cross-sectional area of the pile, and in the case of the tensile pile having the same upper and lower diameters, the pile is inserted into the already- It is inevitable.

In order to use the pile efficiently without waste, there is a method of deeply constructing the pile up to a very strong rock bed above the soft rock layer or enlarging the tip of the pile.

The construction method of supporting the pile on the rock bed above the soft rock layer is very uneconomical due to the increase of the amount of piercing, the amount of pile material consumed and the construction period to be long, which increases transportation, oil consumption, ground grouting requirement, It has a bad influence on the underground environment.

On the other hand, the method of enlarging the tip of the pile has the effect of increasing the allowable bearing capacity of the pile due to the large supporting area of the compressed pile, and the tensile pile can not be pulled out due to the pulling of the pile.

The method of enlarging the tip of the pile is included in the method of enlarging a part of the pile. Separate expansion piercing is required after straight piercing, and slime removal of the piercing piercing is disadvantageous compared to the straight piercing. Particularly, it is not easy to prevent the air hole from being relaxed and collapsed during the expansion drilling operation, and the bulged portion of the end of the perforation hole is also difficult to harden the floor.

FIG. 1 is a view for explaining how a hollow wall of a space portion cut by a diameter is collapsed when a tip of a straight hole is drilled with a general diameter drilling drill. In FIG. 1 (a), the tip of the straight hole 2 is drilled 4 shows the state of the collapse water debris 6 accumulated at the bottom of the diameter hole 4 due to the relaxation of the diameter hole 4 and the collapse of the wall after completion of the diameter setting.

When the concrete enlarged portion is formed at the tip of the pile, when the collapsed water debris 6 shown in FIG. 1 (b) or the unexposed slime remains, the surrounding slime is mixed in the concrete constituting the pile enlargement portion, The quality of the enlarged portion becomes difficult to be guaranteed. Therefore, it is not easy to apply the design to the pile design or to universally apply the pile construction.

In the embodiment of the present invention, a pile enlargement part is formed on a part of the pile, and the pile itself is expanded while cutting the ground, and at the same time, an enlarged part of the pile is formed in the pile expansion. Implement it so that it can be made possible.

FIG. 2 is a view showing a configuration for forming a pile enlarged portion by using a pile on which a pore 102 is mounted according to an embodiment of the present invention, wherein (a) shows a state where the pore enlarging portion is formed, (B) shows a state in which the pile enlargement portion is formed at the completion of the piling work by the pile itself having the piercing mouth 102 Giving.

In the present invention, in constructing a pile installed in a perforation hole in a through hole, a piercing mouth 102 capable of forming a pile enlarged portion is provided on a part of the pile main body 100. That is, the pile of the present invention is composed of a pile body 100 and a part of the pile body 100, preferably a pore mouth 102 mounted on the tip of the pile body 100.

The piercing mouth 102 can be constructed as a unitary structure (see FIG. 2), acting integrally with the pile body 100, separated from the pile body 100 and acting independently, Or a separate type in which they are combined (the structure shown in Figs. 5 to 8).

In the case of using the separable spout hole 102, the pile main body 100 can be formed of the foundry pile 100a of FIG. 7 or the excavated pile 100b of FIG.

3 and 4 are diagrams related to a piercing hole 102 of a pile according to an embodiment of the present invention. FIG. 3 shows a skeleton structure of the piercing hole 102 which also serves as a cutting function, Shows a front view and a flat cross-sectional view of the posterior capsule 102 after the posterior capsule.

3 and 4, (a) is a state before scooping of the piercing hole 102 constituting a part of the pile, and (b) is a post-piercing state view of the piercing hole 102. Fig.

The extender 102 of the present invention largely comprises a cutting tool 10 for diameter cutting and a radially extensible carrier 12 which is radially expandable by the pressure of the curable joint fillets 14, , And the pile expanding portion is formed by the cutting tool 10 and the radially extended carrier 12 in the expanded state.

3 is a perspective view showing the structure of the piercing hole 102 of the pile according to the present invention. The piercing hole 102 constituting a part of the pile of the present invention is formed by the spacers 20 between the upper and lower plate members 18 and 18, . Also, a pile bottom member (21) is mounted on the lower portion of the vibration-proof supporting frame (16) so that the vibration-proof supporting frame (16) At this time, it is preferable that a plurality of fixing protrusions 21a are formed on the bottom of the pile bottom member 21 in order to increase the holding force of the pile bottom member 21. [

Cutting tools 10 are radially movably installed in the spaced-apart portions of the upper and lower plate bodies 18 constituting the vibration-damping support frame 16. Between the upper portions of the vibration-damping support frame 16, An expandable carrier 12 capable of expanding radially and containing a joint filler 14 (14a) capable of being cured like concrete is provided.

It is preferable that the cutting tool 10 is formed in two or more pieces per one place of the pile enlargement part, and it is preferable that the contactless type cutting cutter (the structure of FIGS. 2 to 4) and the contactless water jet cutting machine (The structure of FIG. 5). If necessary, a cutting cutter and a fluid pressure jet cutting machine may be used in combination.

The cutting tool 10 of the present invention mainly uses a metal material and serves as a permanent reinforcing material of the pile enlargement unit in an enlarged state when the pile including the pile enlargement unit is completed.

Further, the cutting tool 10 of the present invention is capable of cutting a hard ground of N value of 30 or more including weathered rock, soft rock, and a carcass layer to serve as a role.

It is desirable to use a water jet cutting machine mainly for soft rock over the ground where the hole is to be formed, and a contact cutting cutter for the hard soil layer, the weathered rock and the weak soft rock layer. Further, in the construction of the water jet cutting machine, it is possible to prevent excessive cutting by adjusting the shape of the nozzle, the spraying angle, the spraying pressure, the arrangement and quantity of the jetting ports, and the like. In addition, although the water used in the water jet cutting machine mainly uses water, a liquid abrasive can also be used in consideration of the characteristics of the ground to be cut.

In order to construct the radially movable cutting tool 10 according to the present invention, cutting tools 10 having a "C" shape as shown in FIG. 3 are formed on the inner surface of the upper and lower plate bodies 18 of the differential support frame 16 Thereby forming a slide groove 24 for guiding to move radially.

When the cutting tool 10 is in the form of a physical contact type cutter, a wavy cutting edge is formed on the outer surface of the cutting tool 10 of the " C "type, or separate cutting tips are fixed, can do. On the other hand, when the cutting tool 10 is in the form of a water jet cutter, the cutting tool 10 of the "C" shape acts as a support member as shown in FIG. 5, The water jet opening 28 serves as a cutter.

An inlet port 42 is formed in the upper plate 18 of the radial support frame 16 so that the joint filler 14 and 14a enter the extended support 12 as shown in FIG.

The extension carrier 12 is located between the upper and lower plate bodies 18 at the core of the radial support frame 16 and is connected to the expansion carrier 12 through a joint filler material 14, And is filled with the incoming junction filler 14a. It is important that the expanded carrier 12 has a uniform expandability and that the inner joint filler 14 (14a) does not leak. Therefore, it is possible to use a donut type or a fiber material such as spandex, or a rubber or a tube.

The joint fillers 14 and 14a filled in the expanded support 12 are curable joint fillers for forming a pile enlarged portion on a part of the pile, and may be one of mortar, concrete, epoxy, liquid polymeric material, And a mixture thereof. If there are other equally different materials other than the above-mentioned joint filler material that can be used in the initial flowable liquid phase and which can fulfill the enlarged bearing capacity of the pile after completion of the pile enlargement construction, Can be used.

Further, when a reinforcing material such as a fiber reinforcing material is added to the joint filler 14 (14a), the shear strength, tensile strength and cracking resistance performance after completion of curing of the joint filler material are greatly improved, Improves the effect of reducing the joint filler requirement.

Concrete can be used as a typical example of the joint filler 14 (14a). In this case, it may be more economical to use a concrete having high strength and high performance or a material having high adhesion performance rather than a general concrete.

When the joint filling material 14 (14a) having excellent adhesion properties such as epoxy is used, the epoxy which is a bonding filler is directly contacted with the steel sheet as the upper and lower plate bodies 18 of the scattering support frame 16, The post-hardening pile enlargement part can work almost integrally with the pile body 100. [

Meanwhile, in the present invention, the cutting tool 10, which is installed on the outer periphery of the vibration-damping support frame 16 and is disposed in a radial manner, is formed with a structure that surrounds the extended support 12 in the deep portion.

The radially outward horizontal movement of the cutting tool 10 is preferably accomplished by pushing the expandable carrier 12 along the radial extension with the injection of the bond fillets 14, 14a as shown in the accompanying figures, Alternatively, a method may be adopted which is based on the horizontal acting force of a tool other than the expanded carrier 12. In addition, when the cutting tool 10 is pushed by the extended carrier 12 and radially moved horizontally, the expanded carrier 12 may be expanded by using gas pressure or fluid pressure instead of the bonding filler 14 (14a) There is also a method of filling the joint filler into the expanded carrier 12.

According to an embodiment of the present invention, it is preferable that an outer wall of the extended support 12 is provided with an extended support wall 32 for protecting the extended support 12 as shown in FIG. 4 and FIG.

The extended carrier support wall portion 32 prevents the extended carrier 12 protruding more than the diameter of the upper and lower plates of the support frame 16 from contacting directly with the cut slurry, 14) 14a, and has a structure that can be expanded together with the radial expansion of the expandable carrier 12. As shown in Fig.

The extended carrier protection wall portion 32 is made of a flexible material which is strong and does not tear to the cutting slime because it can be changed in outer diameter. In the example shown in FIGS. 4 and 5, the extended carrier protection wall portion 32 which can be extended through the overlapping structure of the arc-shaped plate material is shown. If the expanded carrier 2 is formed in such a structure that the inner filler material 14 and the inner filler material 14a directly contact the arc-shaped plate-shaped extended carrier protective wall portion 32 made of a steel plate and the upper and lower plate members 18 made of steel, There is a great advantage that the pile main body and the enlargement part integrally act after curing.

In the present invention, it is preferable that the cutting tool 10, that is, the cutting tip of the cutting cutter or the fluid-pressure jet nozzle is protruded outwardly from the extended carrier protection wall portion 32, 10) is mainly made of a hard metal material, it can withstand shocks during cutting and pressure during fluid pressure injection. The slim cut by the cutting tool 10 can be discharged to the upper portion through the gap space formed by the structure in which the cutting tool 10 adjacent to each other protrudes like a vertical column with the extended carrier protection wall portion 32 Do.

In order to facilitate the cutting operation using the pile cutting tool 10 and to smoothly discharge the slicing slurry, a water supply injector (not shown) for supplying water around the cutting tool during the diameter cutting operation is formed .

In addition, in the present invention, the aperture 102 is provided with an injector (see FIG. 5 (a)) capable of injecting a separate hardenable joint filler material to fill a vacant space around the enlarged portion, 66 of the first embodiment. It is to be understood that the injector 66 is illustrated by way of example only in FIG. 5, but that the dispenser 102 is omitted from the other drawings shown.

In order to perform cutting with the cutting tool 10 provided at the piercing hole 102 of the pile of the present invention, the cutting tool 10 needs to be rotated. When the pile body 100 is rotated on the ground, Not only is not stable, but the bottom gradually sinks in the diameter process, so that the diameter section can be different from the planned section.

Accordingly, if the ground of the hole is not a very hard layer, a means is required to be fixed to the bottom of the hole even though the hole 102 is rotated. (21) provided at the lower portion of the pile (16). When the cutting tool (10) is turned by rotation of the pile during construction, the pile bottom member (21) does not rotate but is fixed on the ground of the end of the perforation hole, so that the floor height of the expansion hole is not changed. have.

The method of filling the filler material 14 and 14a in the expanded carrier 12 of the extruder 102 in constructing the extruder 102 for providing the pile expander according to the embodiment of the present invention can be implemented in three ways .

The first method is to fill the expansion carrier 12 in advance with the total amount of the filler material 14. The method shown in Fig. 9 is an example of the first method.

The second method is to fill the expanded carrier 12 with the filler material 14 in advance and fill the expanded carrier material 10 in an initial state without enlargement and fill the remaining filler material 14a necessary until the expansion carrier 10 is fully charged. Is provided in a part of the pile main body 100 connected to the pore mouth 102. The method shown in Figs. 2, 6, and 10 is an example of the second method.

The third method is a state in which the expansion carrier 12 is initially filled with the filler material 14 through the hose 14 connected to the ground when the expansion port 102 is expanded. The method shown in Figs. 7 and 11 is an example of the third method.

In the case of filling the total amount of the joint filler material 14 of the expanded support 12 in advance, the pore hole 102 of the pile is constructed as shown in Fig.

The piercing hole 102 shown in FIG. 9 is a structure in which the total amount of the filler material enough to fill the aperture hole is radially expandable up to the target diameter while the height of the pre-filled extended carrier 12 is reduced.

9, the spacer 20 shown in Fig. 2, which separates the upper and lower plate bodies 18 constituting the skeleton portion of the sprue 102, is fitted with a stopper 46 to function as a spacer The cutting tool 10 shown in Fig. 2 is also provided with both ends thereof connected to the upper and lower plate bodies 18 and the upper and lower plate bodies 18, 18, And each bending section is also changed to a cutting tool 10a linked with a link.

As described above, the piercing hole 102 of the pile of the present invention rotates and at the same time, the amount of filling of the curable joint filler 14 (14a) in the expanded carrier 12 increases, The tool 10 is gradually radially expanded to cut the ground and the space (aperture hole) generated by the cutting is enlarged to a pre-designed size while the cutting tool 10 and the expanding carrier 12, I can do it. Therefore, the pile enlargement can be formed according to the design standard because there is no excessive magnification beyond the error range of the standard and the external slime is not mixed into the joint filler 14 (14a), and the joint filler 14, And the quality and the strength of the heat-radiating member 14a can be guaranteed in advance.

Hereinafter, a construction method of installing a pile in a perforation hole in a ground through which the pierced hole 102 and the pile main body 100 are completed will be described in more detail.

<Method of pile construction 1>

The pile main body 100 having the piercing hole 102 mounted on its end is inserted into the perforation hole 2 in the ground where the pierced hole is completed. 6 and 10, a pressing plate 26 provided on the outside or inside of the pile is pushed to the outside of the extended carrier 12 of the piercing hole 102 to rotate the pile main body 100, The joined filler material 14a is further introduced into the expanded carrier 12 previously containing the joint filler 14. The expandable carrier 12 is radially expanded by the pressure of the curable joint fillets 14 and 14a and the cutting tool 10 is radially enlarged to cut the ground and the addition of the joint filler 14a Until the end of the flow, The cutting continues. The expandable carrier 12 also expands radially as it continues to fill the aperture hole 4 as long as the hole expansion continues.

After the enlargement of the aperture 102 to the designed aperture hole is completed, an empty space around the aperture 102 is inserted into a separate joint filler such as cement grout or high-performance mortar using an injection port 66 as shown in FIG. .

An example of a method of pressing the pressure plate 26 is to press the weight plate 68 located at the upper portion of the extended support 12 and press the pressure plate 26 using a pressure rod or a fluid pressure balun.

This completes the construction of the pile with the pile enlargement as designed.

<Method of pile construction 2>

The pile main body 100 having the piercing hole 102 mounted on its end is inserted into the perforation hole 2 in the ground where the pierced hole is completed. When the pile main body 100 is rotated and the cementable filler material 14 is filled through the hose 44 extended to the ground to the empty extension carrier 12 as shown in Fig. 11, the pressure of the joint filler material 14, The enlarged diameter hole 12 is radially extended and at the same time the cutting tool 10 of the mouth piece 102 is radially cut to a great extent and the joint filler material 14 is cut off until the enlargement carrier 12 ), The radial expansion of the pile enlarging portion is completed.

Further, after the enlargement of the mouth opening 102 to the designed aperture hole is completed, the empty space around the mouth opening 102 is removed by using the injection opening 66 as shown in Fig. 5 by using separate joints such as cement grout or high performance mortar It is preferable to fill it with filler.

<Method of pile construction 3>

(12) in which the hardened joint filler (14) is filled is also carried out in the same manner as in the pile constructing method (1) except that the radial movement of the cutting tool (10) It is expanding to fill the hall.

<Method of pile construction 4>

The pile main body 100 having the piercing hole 102, which is modified as shown in Fig. 9, is inserted into the pierced hole 2 in the ground where the piercing has been completed. The initial height of the sharp mouth 102 is reduced by pushing and rotating the sharp mouth 102 filled with the joint filler material 14 which can be cured by an amount in consideration of the enlargement in the expanded support body 12 through the pile body 100 At the same time, the cutting tool 10 radially cuts the diameter of the expandable carrier 12 while radially expanding. The cutting tool 10 and the expanded carrier 12 are continuously filled with the enlarged diameter hole until the joint filling material 14 is completely infiltrated, and then radially expanded to complete formation of the pile enlargement part.

<Method of pile construction 5>

6 (a) is placed at the tip of the perforation hole 2 in which the through hole is completed, and the joint filler 102 which can be cured into the expanded carrier is placed And the pearl enlargement portion is formed by rotating the pearl ingot 102. Then, the pile main body 100 is enlarged as shown in FIG. 6 (b) and joined with the separable drilling hole 102 formed with the pile enlarged portion to complete the pile construction.

<Method of pile construction 6>

In the method of the pile construction methods 1 to 5, the formation of the pore holes 102 is performed by all of the pore holes 102. However, after the pore holes are formed in a part or all of the pore holes, It is also possible to carry out in the same manner as in [5].

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. For example, in the present invention, it is to be understood that it is common to form the piercing hole 102 of the pile at one point of the tip pile, but it may be formed at two or more places when it is necessary to enlarge the pile at the intermediate layer of the ground. Therefore, the scope of the present invention should not be limited by the described embodiments but should be determined by the equivalents of the claims and the claims.

The present invention can reduce the number of piles and reduce the pile length because the compressive supporting force and the pulling resistance are reliably increased only by the minimum size of the pile used for the construction of the foundation, the tower structure of the ground or the fixing of the offshore structure. .

(2) -perforating hole (4) -diameter hole
(6) - collapsed water debris (10) - cutting tool
(12) - Expanded carrier (14) (14a) (14b) - Joint filler
(16) -shaped support frame (18) (18a) - upper and lower plates
(20) (20a) - spacer (21) - pile bottom member
(24) - slide groove (26) - pressure plate
(28) - Water jet opening (32) - Expanded carrier protection wall part
(42) - Fused joint filler inlet
(44) - hose (68) - weight
(100) - the pile main body (102)
(100a) - a standing pile (100b) - a cast-in-place pile

Claims (25)

A pile installed in a perforation hole in a ground where a through hole is completed,
A piercing orifice capable of forming a pile enlargement part on a part of a pile main body, the piercing hole comprising a cutting tool for diameter cutting and a radially extended carrier radially expanding by the pressure of the hardenable joint filler, Wherein the pile enlargement unit is formed by a tool and a radially expanded carrier.
A pile installed in a perforation hole in a ground where a through hole is completed,
And a radially expanded carrier which is radially expanded by the pressure of the hardenable joint filler to expand the radially expanded carrier by a pressure of the hardenable joint filler, Wherein the pile enlarging portion is formed by the cutting tool and the radially extending carrier in the state of the pile.
[3] The pile of claim 2, wherein the pile body connected to the removable punch is one of a standing pile and a ground pile.
A pile installed in a perforation hole in a ground where a through hole is completed,
And a plurality of spaced-apart support frames formed by upper and lower plates and spacers, wherein the plurality of spaced-apart support frames are disposed between the upper and lower plates, And a radially expandable support which is radially expanded by the pressure of the curable joint filler which is initially positioned in the support frame.
5. The pile according to any one of claims 1 to 4, wherein the cutting tool is at least one of a non-contact water jet cutting machine and a physical contact cutting cutter as a rotatable cutting tool.
5. A cemented carbide according to any one of claims 1 to 4, characterized in that the curable joint filler to be filled in the radially expanded carrier comprises mortar, concrete, epoxy, liquid polymeric material, Possible stakes.
The pile according to any one of claims 1 to 4, wherein the cutting tool is formed so as to protrude further into the outer chamber than the radially extended carrier.
The pile as claimed in any one of claims 1 to 4, characterized in that the cutting tool is configured to be pushed radially by the radially extending carrier.
The pile according to any one of claims 1 to 4, characterized in that the cutting tool is configured to be horizontally radially moved by a separate horizontal acting force applied to the cutting tool.
The method of any one of claims 1 to 4, wherein the radially extended carrier to which the cutting tool and the bonding filler are injected is configured to immediately fill the space generated by the diameter cutting while expanding until the diameter cutting is completed, Which is capable of its own magnification.
The pile according to any one of claims 1 to 4, characterized in that the radially expanded carrier has a protection wall portion which is protected from leakage of the joint filler and from contact with the cutting slime and the ground.
12. The pile as claimed in claim 11, wherein the protective wall portion of the radially extending carrier comprises at least one of a plurality of arcuate blocks and a flexible sheath to prevent tearing.
[5] The apparatus as claimed in claim 1, further comprising a pile bottom member fixed to the bottom of the perforation hole at the time of rotating the cutting tool as the pile rotates, .
The method as claimed in any one of claims 1 to 4, wherein the joint filler comprises: a filling structure that fills the expanded carrier with the total amount of filler materials to be bonded; a filler portion that is partially filled in the expanded carrier and an additional amount And a filling member filled in an empty extension carrier through a hose connected to the ground.
[5] The method according to any one of claims 1 to 4, wherein the magnifying orifice is configured such that the total amount of the joining filler including the magnifying lens is radially expandable up to the target diameter while the height of the pre- A pile capable of its own magnification.
The self-sharpening device according to any one of claims 1 to 4, further comprising an injector capable of injecting a hardenable joint filler into an empty space around the enlarged portion, Wonderable stakes.
The pile according to any one of claims 1 to 4, wherein the cutting tool has a capability of cutting a hard ground having an N value of 30 or more including weathered rock, soft rock, and light rock layer.
A method of constructing a pile installed in a perforation hole in an underground pit,
A pile body having a cutting tool and an extensible carrier is inserted at the tip of the drilled hole in the ground where the drilling is completed, and a hardenable joint filler, which is preliminarily provided at a predetermined amount to the outside of the expanded carrier while rotating the pile body, The expanded carrier is radially expanded by the pressure of the curable joint filler while being further flowed into the expanded carrier, and at the same time, the cutting tool is radially cut to a great extent, and the enlarged carrier is continuously filled in until the infeed of the joint filler is finished Wherein the pile is expanded radially to form a pile enlargement part.
A method of constructing a pile installed in a perforation hole in an underground pit,
A pile body having a cutting tool and an expanding carrier is inserted at the tip of the through hole and the pile body is rotated to fill the hollow expanding carrier with a hardenable joint filler through a hose connected to the ground The expansion carrier is radially expanded by the pressure of the joint filler, and at the same time, the cutting tool is radially cut to a great extent. The expanding carrier is continuously filled with the enlarged support hole cut until the inflow of the joint filler is completed, A pile construction method capable of self-magnification.
A method of constructing a pile installed in a perforation hole in an underground pit,
A pile body with a cutting tool and an extensible carrier is inserted at the tip of the drilled hole in the ground where the drilling is completed and the cutting tool is applied with a horizontal force acting on the cutting tool while rotating the pile body, Wherein the expanded carrier filled with a cutting and curing joint filler is expanded while filling the diameter hole to form a pile enlargement part.
A method of constructing a pile installed in a perforation hole in an underground pit,
A pile main body equipped with a cutting tool having a cutting tool and an expanding carrier is inserted at the tip of a through hole in the ground where the drilling is completed and a cutting tool pushed by the external carrier applying an internal pressure to the expanding carrier and rotating the pile body, And a pile enlargement portion is formed by filling the expandable carrier with a hardenable joint filler material, thereby forming a pile enlarging portion.
A method of constructing a pile installed in a perforation hole in an underground pit,
A pile body equipped with a cutting tool and an extensible carrier is inserted at the tip of the drilled hole in the ground where the drilling is completed, and the joint filler that can be cured by the amount considering the enlargement is rotated while pushing the filled pile. The cutting tool is radially cut in a radial direction while the expanding carrier is radially expanded, and the expanding carrier is continuously filled with the enlarged carrier, which is cut until the infeed of the joint filler is completed, Wherein the pile is formed by a plurality of piles.
A method of constructing a pile installed in a perforation hole in an underground pit,
A pile enlarging part is formed by rotating the piercing hole while filling a cementable filler material which is capable of forming a pile enlargement part and placing a separating type pore containing a cutting tool and an expanding carrier at the tip of the pore hole, A pile construction method capable of self-magnifying completion of pile construction by coupling the body to the piercing hole.
24. The method according to any one of claims 18 to 23, characterized in that prior to injecting the drilling hole into the drilling hole, a part of or all of the design drilling hole is previously identified using a drilling hole Possible pile construction method.
25. The method according to any one of claims 18 to 24, wherein a bottom member fixed to the bottom of the perforation hole is used as a rotating pile body or a spindle, and the rotation of the cutting tool by rotation of the pile body rotates the bottom of the perforation hole Wherein the pile is constructed of a plurality of piles.

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