KR102106577B1 - Cement paste injection appratus - Google Patents

Abstract

The present invention provides a cement paste injecting apparatus which includes: an auger part including an outer auger of which a stirring wing is formed around a circumference and which is formed with a hollow body; a rod lifted along a hollow of the outer auger, and an auger head which is connected to a lower side of the rod and of which a stirring wing is formed along a circumference and a plurality of bits are formed at a lower side; and a swivel which surrounds an outer circumference of the outer auger, in which an injecting hole penetrating in a horizontal direction is formed, and of which a floor surface is opened to directly supply cement paste to the rotating outer auger.

Description

Cement paste injection device {CEMENT PASTE INJECTION APPRATUS}

The present invention relates to a cement paste injection device applied to the t4 construction method, and more specifically, a tip expansion pile (pile fixing bottom portion) that maximizes the bearing capacity of the pile inserted into the ground through a stirring operation that was impossible to construct with the existing t4 hammer construction method. It relates to a cement paste injection device that can enable the construction of the construction method to increase the bearing capacity by expanding the drilling.

In general, when improving the ground or constructing a vertical barrier on the ground, the main rod and the rotating rod are rotated by receiving power from the auger and the rotating rod, and connecting rods connected in sequence vertically to the lower side of the rotator, stirring It uses a ground drilling device composed of rods and excavation rods.

A wire cable is installed on the upper side of a leader, which is vertically elevated from the ground by the support arm of a crawler crane operating on the ground, and a hurricane is installed with the wire suspended so that it can be moved up and down. Connect and assemble a rotator equipped with several gears meshed to each other on the output shaft of the device, and also connect a plurality of cylindrical rods to the output shaft of the rotator vertically in multiple stages and agitate to the bottom connection rod. When the rod and the excavation rod are connected in sequence and then the oscillator is operated, the output shafts of the rotator rotate so that the connecting rod, the stirring rod and the excavation rod connected vertically to each of the output shafts are rotated. When rotating, the excavation rod excavates the ground, and the bridge connected to the excavation rod The half rod will stir the soil excavated by the excavation rod.

In addition, in the conventional pile drilling method, the general auger perforation bit method, the gravel in the ground densely, or the presence of malt, residual rock, etc. makes it impossible to drill the auger, or the t4 hammer method for drilling a rock over weathered rock, which is a bedrock. In this case, in the case of the general auger method, when the cement paste is supplied through the grouting injection hose connected to the upper auger, the cement paste is injected from the bottom of the perforation hole and the cement paste is filled from the bottom of the perforation hole by using the tube inside the perforation rod. After the casing is drawn, the cement paste is injected during the casing draw from the auger bit located on the top of the pile to construct the gap to fill the gap between the pile and the hole.

In the method using t4 hammer, when the t4 hammer structure sends the cement paste to the inner tube of the perforated rod, the inner surface of the t4 hammer and the cylinder are rapidly worn by the cement, and the surface of the t4 hammer is rapidly shortened. In the order of drawing the cement casing paste from the outside of the hole where the casing is installed, and injecting the cement into the injection hose, inserting the pile, and then pulling the casing in order, it takes a separate cement paste injection time, which increases the working time and lowers the perforation hole. There is a problem that Ejanjanto remains, the ball hole collapses, or the groundwater flows.

In addition, in Japan, it is common to construct SIP and extremity piles because it is volcanic soil. In Korea, gravel, residual rock, and malt are present in the ground layer, so t4 hammers are frequently used. There is a problem that construction is almost impossible to increase the support.

On the other hand, the above-mentioned background technology is the technical information acquired by the inventor for the derivation of the present invention or acquired in the derivation process of the present invention, and is not necessarily a known technology disclosed to the general public before filing the present invention. .

Korean Registered Patent No. 10-1913478 Korean Registered Patent No. 10-1510649

The present invention, by implementing a direct supply of cement paste to the auger, it is possible to significantly shorten the construction time, thereby maximizing the bearing capacity of the pile inserted into the ground through a stirring operation that was impossible to construct with the existing t4 hammer method Provided is a cement paste injecting device that enables construction of a tip expansion pile (a method of increasing support by expanding and drilling a lower end of a pile).

Another object of the present invention is to provide a cement paste injection device capable of supplying cement paste for reinforcing the ground while simultaneously drilling the ground.

Another object of the present invention, to provide a cement paste injection device that can reduce the impact on the auger and the bending moment generated in the auger when drilling the ground.

Another object of the present invention is to provide a cement paste injection device capable of reinforcing the ground more stably by embedding reinforcing means in the cement paste.

Cement paste injecting apparatus according to an embodiment of the present invention, a stirring blade is formed along the circumference, the outer auger formed of a hollow body and a rod that moves up and down along the hollow of the outer auger, is connected to the lower side of the rod, A stirring blade is formed along the circumference, an auger part including an auger head having a plurality of bits formed on the lower side, surrounding the outer periphery of the outer auger, an injection hole penetrating in the horizontal direction is formed, and the bottom surface is opened to rotate It includes a swivel to supply cement paste directly to the outer auger.

And, the supply guide pipe coupled to the lower side of the swivel and surrounding the outer auger so that the cement paste descends along the stirring blade and is supplied to the ground, installed on the outer surface of the auger head, connected to the bit, and connected to the bit The deployment unit that is in close contact with the outer surface of the auger head or deployed to be spaced apart from the auger head, a leader positioned on the ground, a driving unit movably installed on the leader, and raised and rotated inside the supply guide tube by the driving unit, A housing with an air injection port formed on the upper side, a first part bit formed on a bottom surface of the housing, perforating the ground while descending and rotating with the housing, and having a lifting guide hole penetrating in the upper and lower directions, inside the case A hammer that is located in a space and is operated by supplying air, striking the first additional bit. The first is located on the elevation guide hole of the additional bit, and the further comprises a second additional bit that is projected by the impact force of the hammer to the lower elevation guide hole drilling the ground.

In addition, after falling through the perforated hole in the ground drilled by the auger, it further includes a reinforcement part which is hit by the first additional bit or the second additional bit and embedded in the cement paste.

And, the reinforcing part,

A pocket member filled with air and blown by the first additional bit or the second additional bit, received inside the pocket member, and a plurality of reinforcing walls are cross-formed in the vertical and horizontal directions inside the frame The main reinforcing member, which is exposed to the outside when the pocket member bursts, is hit by the first additional bit or the second additional bit and embedded in the cement paste, accommodated in the interior space of the pocket member, and when the pocket member bursts It is exposed to the buried in the cement paste, it is fixed to the pocket member so as to be positioned in a standing or inclined shape around the reinforcing member when exposed to the outside, and includes a sub-reinforcing member formed in a wavy or zigzag shape.

In addition, the sub-reinforcement member is fixed to the pocket member, one surface is opened and an outer case in which an accommodating space is formed, an interior material accommodated in the outer case, and pressed by the main reinforcement member, the outer case It is fixed to the inner space and includes a coil spring that is kept compressed by the outer case, and the interior material protrudes a predetermined length to the outside of the outer case by the expansion action of the coil spring when the pocket member bursts.

According to one aspect of the present invention described above, the swivel can directly supply the cement paste to the auger. Therefore, after the ground drilling is completed, the rod and t4 hammer of the auger are pulled out, and when the cement face is injected into the auger through the swivel at the time when the pile is inserted, the cement paste injection process and injection time are not generated. It is possible to significantly shorten the time, which makes it possible to maximize the bearing capacity of the pile inserted into the ground through the stirring operation, which was impossible to construct with the existing t4 hammer method. It has the effect of enabling construction.

In addition, by applying a stirring blade formed in a screw shape to the outer auger and the auger head, the cement paste for reinforcing the ground can be supplied to the ground while drilling the ground, thereby reducing the time required to improve the ground. There is.

In addition, since the ground is first drilled through the first additional bit, the hammer, and the second additional bit, the operation of drilling, crushing and excavating the ground through the outer auger and auger head is performed. It is possible to reduce the applied impact and the bending moment generated in the auger head and the outer auger, thereby maintaining a constant quality of the cement paste injection device.

And, by embedding the main reinforcing member and the sub reinforcing member serving as a skeleton to the cement paste supplied to the ground, there is an effect that the ground can be more stably reinforced.

In addition, since the cement paste, the main reinforcing member, and the sub reinforcing member are rigidly combined, the resistance to horizontal and vertical soil pressure generated in the soil is further increased, thereby securing the stability of the ground.

1 is a front view showing a ground improvement device according to the present invention.
Figure 2 is a front view showing the operation of the ground improvement device according to the present invention.
Figure 3 is a perspective view showing a swivel applied to the ground improvement device according to the present invention.
Figure 4 is a front view showing a step-by-step process for improving the ground through the ground improvement device according to the present invention.
5 is a front view showing a housing, a first additional bit, and a second additional bit applied to the ground improvement device according to the present invention.
6 is a cross-sectional view showing a housing, a first additional bit, and a second additional bit applied to a ground improvement device according to the present invention.
7 and 8 is a front view showing the operation of the first additional bit, the second additional bit, reinforcement applied to the ground improvement device according to the present invention.
Figure 9 is a cross-sectional view showing a housing, sub-reinforcement applied to the ground improvement device according to the present invention.

For a detailed description of the present invention, which will be described later, reference is made to the accompanying drawings that illustrate, by way of example, specific embodiments in which the present invention may be practiced. These examples are described in detail enough to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain shapes, structures, and properties described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with one embodiment. In addition, it should be understood that the location or placement of individual components within each disclosed embodiment can be changed without departing from the spirit and scope of the invention. Therefore, the following detailed description is not intended to be taken in a limiting sense, and the scope of the present invention, if appropriately described, is limited only by the appended claims, along with all ranges equivalent to those claimed. In the drawings, similar reference numerals refer to the same or similar functions across various aspects.

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

1 is a front view showing a ground improving device according to the present invention, Figure 2 is a front view showing the operation of the ground improving device according to the present invention, Figure 3 shows a swivel applied to the ground improving device according to the present invention 4 is a front view showing the process of improving the ground step by step in accordance with the present invention.

The ground improvement device 1 according to the present invention may include an auger 10 and a swivel 20.

The auger portion 10 is to form a perforation hole through the ground, and includes an outer auger 11 and an auger head 12 installed under the outer auger 11.

The outer auger 11 is formed with a stirring blade (11a) around the periphery, the cement paste 2 is stirred while drilling the ground while rotating in place.

The stirring blade 11a is formed along the longitudinal direction of the outer auger 11, and is formed in a single screw shape on the entire circumference of the outer auger 11.

Therefore, the stirring blade 11a can stir the soil crushed by the auger head 12 to be described later together with the cement paste 2.

The shape of the stirring blade 11a is not limited to a screw shape, and may be formed in various shapes as long as the cement paste 2 and crushed soil and cement paste 2 can be efficiently stirred.

This, the outer auger 11 is made of a tubular structure in which the upper and lower surfaces are opened and an empty space is formed inside to allow the auger head 12 to be elevated.

The auger head 12 is disposed under the outer auger 11 and crushes, excavates, or stirs the ground prior to the outer auger 11.

A rod 121 having a predetermined length is formed on the top of the auger head 12.

The rod 121 is accommodated in the inner space of the outer auger 11 and is elevated and rotated.

The auger head 12 is formed with a stirring blade 12a along the circumferential longitudinal direction, and agitates the ground while rotating in place.

When the stirring blade 11a of the outer auger 11 and the stirring blade 12a of the auger head 12 are screw-shaped, a hole may be formed in the stirring blades 11a, 12a, or a cut-out portion may be formed. have. When forming a hole or a cut in the stirring blades (11a, 12a), the pressure in the drilling hole can be reduced, thereby making the rod 121 reciprocating up and down easily, and the area obstructing the rod 121 reciprocating rotation up and down is reduced. The resistance can be reduced, and the stirring effect is increased by passing the cement paste through the hole or cutout as the rod 121 reciprocates up and down. Holes or cutouts may be formed in various shapes such that the crushed soil and the like and the cement paste 2 mixed with the cement paste 2 can pass through.

In addition, a plurality of bits 12b for crushing and excavating the ground are formed on the lower surface of the auger head 12.

At this time, the bit 12b is applied so as to be deployable by the deployer 40.

As shown in FIGS. 1 and 2, a plurality of deployment parts 40 may be applied, and may be applied to different types.

The deployment portion 40 located on the left side of the auger head 12 is hinged to the first fixing plate 411 and the first fixing plate 411 coupled to the outer surface of the auger head 12 and can be rotated in the horizontal direction. The first pivoting plate 412 having a connecting piece 413 connected to the bit 12b may be expanded or folded.

That is, the deployment portion 40 is folded when the first rotating plate 412 is in contact with the first fixing plate 411 as shown in Figure 1, the first rotating plate 412 as shown in Figure 2 When it is rotated in a form parallel to the first fixing plate 411, the bit 12b is unfolded.

Then, the deployed bit 12b crushes and excavates the ground as described above.

At this time, any one bit 12b is connected to the connecting piece 413, and the other bit 12b is connected to the bit 12b connected to the connecting piece 413, but is located above the bit 12b. .

Therefore, the bit 12b located at a low position precedes the excavation and crushing of the ground, and then the bit 12b located at the high position crushes and excavates the ground.

And, by folding the bit 12b through the deployment portion as described above, it is possible to improve the intrusion performance not only for ordinary soil, but also for soil with hard ground structures such as gravel layers and weathered rocks.

Although not shown in the drawing, the deployment unit 40 may further include a stopper (not shown) for preventing the first rotating plate 412 from folding when the bit 12b is deployed.

In one example, the stoppers are composed of two pairs, each coupled to the first fixing plate 411 and the first rotating plate 412, positioned on a perpendicular line to each other, and formed into an insert piece having an insertion groove and a straight rod shape. One side and the other side may include a fixing bar inserted into the insertion groove, respectively.

That is, it is possible to prevent the first rotation plate 412 from being rotated in a direction in contact with the first fixing plate 411 by inserting the fixing bars into the insertion grooves, respectively.

On the other hand, the deployment portion 40 located on the right side of the auger head 12 is hinged to the second fixing plate 421 and the second fixing plate 421 coupled to the outer surface of the auger head 12 to be rotated in the horizontal direction. It has a structure that is expanded or folded, including a second pivot plate 422 connected to the bit 12b.

That is, the deployment portion 40 is also folded when the second rotating plate 422 is in contact with the first fixing plate 411, and the first rotating plate 412 is rotated in a form parallel to the second fixing plate 421 Poetry unfolds, bit 12b unfolds.

Then, the deployed bit 12b crushes and excavates the ground as described above.

At this time, any one bit 12b is connected to the second rotating plate 422, and the other bit 12b is connected to the bit 12b connected to the second rotating plate 422, and this bit 12b ).

Therefore, the bit 12b located at a low position precedes the excavation and crushing of the ground, and then the bit 12b located at the high position crushes and excavates the ground.

And, the deployment unit 40 may also include a stopper having the above-described structure.

At this time, the deployment portion 40 and the bit 12b located on the left and right sides of the auger head 12 may be installed at different heights, and in the drawing, the deployment portion 40 and the bit 12b located on the left side are on the right side. It shows an example coupled to the lower position than the deployment portion 40 and the bit 12b located at.

Therefore, the bit 12b coupled to the deployment portion 40 located on the left side precedes the crushing and excavation of the ground, and then the bit 12b coupled to the deployment portion 40 located on the right side crushes and excavates the ground. .

On the other hand, the swivel 20 supplies the cement paste 2 with the stirring blade 11a of the rotating outer auger 11, whereby the cement paste 2 has the stirring blade 11a of the outer auger 11 and It descends along the stirring blades 12a of the auger head 12 to be supplied to the ground drilled by the auger portion 10 to enhance the bonding force between adjacent soils.

At this time, the cement paste (2) can be used a variety of mortars, eco-friendly solidified materials.

Specifically, in the swivel 20, an empty space in which a portion of the outer auger 11 is accommodated is formed inside, and an injection hole 20b through which the cement paste 2 is injected is formed through the side, and is formed through the horizontal direction. The upper and lower surfaces are opened so that the outer auger 11 can penetrate.

And, through the lower open portion of the swivel 20, the cement paste 2 injected through the injection hole 20b can be flowed to the lower portion, that is, the stirring blades 11a and 12a.

Swivel 20 may be made of a structure with one surface open so that the outer surface of the outer auger 11 can be easily wrapped. And, the swivel 20 may further include a cover 21 for opening and closing the open portion.

Additionally, the ground improving device according to the present invention may further include a supply guide pipe 30 for preventing the cement paste 2 from being separated from the stirring blades 11a and 12a.

The supply guide pipe 30 is coupled to the swivel 20. The swivel 20 and the supply guide tube 30 should be easily coupled and prevent mutual departure, for this purpose, a T-shaped incision 20a is formed on the lower side of the swivel 20, and the supply guide tube 30 Equipped with a projection 31 having the same shape as the incision 20a, the swivel 20 and the supply guide tube 30 can be connected.

That is, after inserting the projection portion 31 of the supply guide pipe 30 into the vertical incision 20a of the T-shaped incision 20a of the swivel 20, and then rotating it, the horizontal incision of the T-shaped incision 20a is rotated. By positioning it at (20a), the swivel 20 and the supply guide tube 30 can be connected. Therefore, it is possible to smoothly inject cement paste 2 into the outer rod 121 rotating through the swivel 20, and it is easy to connect and disassemble the swivel 20 and the supply guide pipe 30, during construction. There is an effect that the swivel 20 and the outer rod 121 are not easily separated.

In addition, the supply guide pipe 30 has upper and lower surfaces open and an empty space formed therein to accommodate the outer auger 11 and the auger head 12.

That is, the supply guide pipe 30 wraps the outer auger 11 and the auger head 12 to prevent the separation of the cement paste 2.

In addition, since the upper open portion of the supply guide pipe 30 is accommodated in the lower open portion of the swivel 20, the cement paste 2 injected into the injection hole 20b descends along the stirring blades 11a, 12a. As it goes, it is agitated with soil, gravel, and weathered rocks located in the ground to strengthen the ground and to strengthen the bonding force between adjacent soils.

Next, referring to FIGS. 5 to 9, the reader 50, the driving unit 60, the housing 70, the first additional bit 80, the hammer 90, and the second addition to the ground improving apparatus according to the present invention An example in which the bit 100 and the reinforcement part 110 are additionally applied will be described.

5 is a front view showing a housing, a first additional bit, and a second additional bit applied to the ground improving device according to the present invention, and FIG. 6 is a housing applied to the ground improving device according to the present invention, a first additional bit, and a second 7 and 8 are front views showing the operation of the first additional bit, the second additional bit, and the reinforcement unit applied to the ground improvement device according to the present invention, and FIG. 9 is the ground according to the present invention It is a sectional view showing the housing and the sub-reinforcement applied to the improvement device.

At this time, the first additional bit 80, the hammer 90 and the second additional bit 100 are operated ahead of the auger 10 described above, so that the auger 10 can more easily enter the ground. do.

The leader 50 is installed on a driving equipment (not shown) and vertically disposed on the ground, and is formed in a truss structure to secure durability, such as withstanding a load by connecting a truss bar inside the frame.

At this time, the length of the leader 50 may vary depending on various conditions such as a construction place, a ground condition, and a depth to be drilled.

In addition, the driving equipment serves to drive and manipulate the movement and overall operation of the reader 50, and monitor and manipulate the operator to operate and operate the movement and overall operation of the reader 50 by boarding. It is equipped with a boarding room equipped with devices, and a moving means is provided to enable actual movement. The moving means may be provided in a caterpillar or a wheel.

In addition, the driving driving equipment is provided with a crank arm to perform a vertical arrangement by combining the leader 50 and adjusting the angle.

The driving unit 60 is formed of a motor in which the motor shaft is rotated in the forward or reverse direction.

The driving unit 60 has a structure that is elevated by the reader 50, and transmits a rotational force for drilling the ground to the housing 70 and the first additional bit 80 coupled to the housing 70.

A first additional bit 80 and a hammer 90 are installed in the housing 70, and a supply hole 70a through which air is supplied to the upper surface is formed, and a first additional bit 80 is mounted at the bottom. A hole is formed, and an air passage for transmitting the supplied air to the hammer 90 is formed inside.

The upper end of the housing 70 is coupled to the motor shaft of the driving unit 60, and is rotated at a high speed by the operation of the driving unit 60 so that the first additional bit 80 drills the ground.

Additionally, an air supply unit 120 for supplying air to the air passage is connected to the upper side of the housing 70 through the supply pipe 121.

The air supply unit 120 is detachably coupled to the reader 50, and can be moved up and down along the reader 50.

Accordingly, the housing 70 connected to the air supply unit 120 and the first additional bit 80 and the second additional bit 100 coupled to the housing 70 may also be elevated.

The air supply unit 120 is formed of an air compressor to supply compressed air to the inner space of the housing 70 so as to strike the hammer 90.

The first additional bit 80 is to drill the ground to a certain depth, the upper portion of the mounting portion 81 is mounted to the mounting hole of the housing 70 is provided.

The first additional bit 80 protrudes to the lower side of the housing 70 and is formed in an approximately inverted triangle shape.

That is, the first additional bit 80 is to be drilled to a certain depth while descending and rotating together with the housing 70 while being mounted at the lower end of the housing 70.

In addition, a plurality of lifting guide holes 80a in which the second additional bits 100 to be described later are accommodated is formed in the first additional bits 80 through the vertical direction.

The hammer 90 perforates the ground by repeatedly striking the first additional bit 80 by air supplied to the air passage of the housing 70.

The hammer is accommodated in the air passage of the housing 70 and is located above the mounting portion 81.

The hammer 90 operates by the air supplied to the air passage, strikes the first additional bit 80, then rises by the repulsive force, then descends by air again to strike the first additional bit 80.

That is, the hammer 90 is to repeatedly drill the ground by gradually hitting the first additional bit 80 while repeatedly lifting by the reaction force generated by hitting the first additional bit 80 and the supplied air. .

The second additional bit 100 is to drill the ground together with the first additional bit 80, and is received in the elevating guide hole 80a of the first additional bit 80, respectively, on the first additional bit 80. Evenly distributed in

Then, the second additional bit 100 is coupled to the bottom of the hammer 90 through welding or the like.

Therefore, the second additional bit 100 repeats the descending and ascending operation together with the hammer 90 operated according to the air supply.

At this time, the second additional bit 100 is formed in an inverted triangular shape on the lower side so as to improve the drilling efficiency in the same way as the first additional bit 80.

In addition, the second additional bit 100 is completely accommodated into the inside of the lifting guide hole when the hammer 90 is raised, and when lowered, the lower part protrudes out of the lifting guide hole 80a, thereby causing the first additional bit ( 80) and drilling the ground.

That is, when the drilling operation is performed through the drilling device 1 using the air hammer 90 according to the present invention, the first additional bit 80 and the second additional bit 100 together drill the ground. A more efficient drilling operation is performed compared to a conventional drilling device using a single bit 12b. In particular, since the second additional bit 100 is a structure for drilling the ground on the first additional bit 80, the first additional bit (80) can be made to penetrate the ground more easily, it is possible to improve the drilling efficiency.

And, as the ground can be easily drilled through the interaction of the first additional bit 80 and the second additional bit 100, the impact and the bending moment applied to the housing 70 are further reduced. Since it is possible to make the cross section of the housing 70 thin, it is possible not to bend or break it.

Furthermore, the present invention, after first drilling the ground through the first additional bit 80, the hammer 90, the second additional bit 100, the air supply unit 120, the housing 70 from the reader 50 ), After the first additional bit 80 and the air supply unit 120 are separated, the auger unit 10 is applied to the auger unit 10 because the above-mentioned auger unit 10 is combined to perform drilling, crushing and excavation of the ground. The impact and bending moment can also be reduced.

On the other hand, the reinforcing part 110 is introduced into the ground through a perforated hole formed by the first additional bit 80, the second additional bit 100, the auger portion 10, and the auger head 12, cement paste ( It is cured in a state embedded in 2) to reinforce the ground, and may include a pocket member 111, a main reinforcing member 112, and a sub reinforcing member 113.

In one example, the reinforcing part 110 sequentially drills the ground with the first additional bit 80, the second additional bit 100, and the auger 10, and then fills the cement paste 2 with the ground. Can then be applied.

In another example, the reinforcing portion 110 may be applied prior to filling the cement paste 2 in the ground after drilling only the ground with the auger portion 10.

In addition, the drawing shows an example in which the reinforcing part 110 material is applied after filling the cement paste 2. At this time, the reinforcing part 110 may be applied after only a predetermined amount of cement paste 2 is injected into the ground through the above-described method. And, after that, it is also possible to continuously fill the cement paste 2 above the reinforcing part 110 through the above-described method.

The pocket member 111 is formed of a pocket structure in which an empty space is formed inside, and may be formed in various shapes such as polygonal, circular, and elliptical shapes.

An air injection hole (not shown) through which air is injected is formed on the upper surface of the pocket member 111, and the main reinforcing member 112 and the sub reinforcing member 113, which will be described later, are opened to enter and exit. The closed part may be opened or closed by installing a zipper (not shown) or various other types of opening and closing devices.

Therefore, after receiving the main reinforcing member 112 and the sub reinforcing member 113 in the inner space of the pocket member 111, and then closing the open part with a zipper, connect the air compressor to the air injection hole 20b By injecting air, and then blocking with a stopper (not shown), the pocket member 111 can be expanded to a certain size.

In addition, the pocket member 111 may be formed of a rubber or silicone material so as to be exploded by the impact force of the first additional bit 80 or the second additional bit 100.

In addition, the pocket member 111 also performs a function of integrally connecting the main reinforcing member 112 and the sub reinforcing member 113 to be described later, so that the sub reinforcing member 113 is cemented together with the main reinforcing member 112 as much as possible. It can be embedded in the paste (2).

The main reinforcing member 112 is embedded in the cement paste 2 to reinforce the ground, the upper surface of which is coupled to the ceiling surface of the pocket member 111, or the lower surface of which is coupled to the bottom surface of the pocket member 111, A plurality of reinforcing walls 1122 are vertically and horizontally cross-formed inside the frame 1121 formed in a rectangular shape.

The pocket member 111 is unfolded as shown in FIG. 8 when it bursts, exposing the main reinforcement member 112 to the outside.

Thereafter, the main reinforcing member 112 is gradually buried in the cement paste 2 because the first additional bit 80 or the second additional bit 100 repeatedly strikes the upper surface of the frame 1121.

The sub-reinforcing member 113 is embedded in the cement paste 2 together with the main reinforcing member 112 to reinforce the ground, accommodated in the interior space of the pocket member 111, and when the pocket member 111 bursts, the outside It is exposed to the cement paste (2), but when exposed to the outside, it is fixed to the pocket member (111) so that it is positioned in a standing or inclined shape around the reinforcing part (110) material, and is formed in a wavy or zigzag shape. You can.

In addition, the sub-reinforcing member 113 is fixed to the pocket member 111, one surface is opened and an outer case 1131 having an accommodation space formed therein, accommodated inside the outer case 1131, the pocket member 111 The coil spring that is fixed to the interior space of the interior material 1132 and the exterior case 1131, which is pressed by the frame 1121 in the interior space of the pocket part before it bursts, and is compressed by the exterior case 1131 to maintain a compressed state. (1133).

Then, when the pocket member 111 is opened and unfolded, the pressing force of the frame 1121 against the interior material 1132 is extinguished, and at the same time, the coil spring 1133 is expanded in its original form, and the interior material 1132 is the outer case 1131. ) Protrudes a predetermined length upward.

Next, an example of use of the reinforcing portion 110 configured as described above will be described.

First, as described above, the ground is first drilled through the first additional bit 80 and the second additional bit 100.

Thereafter, after separating the housing 70, the first additional bit 80, the second additional bit 100, and the like from the reader 50, the swivel 20 is coupled to the reader 50, and then the auger 10 ) The cement paste (2) is supplied to the ground while drilling the ground for a second time. Therefore, a hole of a certain depth is formed in the ground, and the ground can be strengthened.

Subsequently, after the auger portion 10 is withdrawn to the ground, the housing 70, the first additional bit 80, the second additional bit 100, and the like are again coupled to the reader 50, and the reinforcement unit 110 ) Is dropped into the perforated hole and placed on the top surface of the cement paste 2.

Thereafter, the housing 70, the first additional bit 80, the second additional bit 100, and the air supply unit 120 are lowered and operated to the first additional bit 80 and the second additional bit 12b. The pocket member 111 is popped.

At this time, the pocket member 111 does not need to be formed to have a thickness and stiffness that burst only by the impact force of the first additional bit 80 or the second additional bit 100, and naturally burst when colliding with the cement paste 2 It may be designed to be.

Subsequently, the first additional bit 80, the second additional bit 100, the air supply unit 120, etc. are descended and operated to strike the mold 1121 repeatedly, so as to be embedded in the cement paste 2 .

At this time, the air supply unit 120 should be set to supply air pressure of an intensity capable of being embedded in the cement paste 2 to the air passage with little deformation of the mold 1121.

In addition, the depth, shape, and angle of the main reinforcing member 112 and the sub reinforcing member 113 may be varied depending on the amount, viscosity, strength, and curing degree of the cement paste 2 supplied to the ground.

In addition, since the first additional bit 80 and the second additional bit 100 strike only the frame 1121, the main reinforcing member 112 may be embedded deeper in the cement paste 2 than the sub reinforcing member 113. have.

Therefore, in consideration of the case where the main reinforcing member 112 and the sub reinforcing member 113 are not completely embedded in the cement paste 2, the operation of additionally supplying the cement paste 2 to the ground is performed once more. good.

On the other hand, when the filling process of the reinforcing portion 110 is completed, the housing 70, the first additional bit 80, the second additional bit 100, the air supply unit 120, etc. are raised to the ground to strengthen the reinforcing portion 110. ) Is completed.

As described above, the main reinforcing member 112 and the sub reinforcing member 113 to be applied are settled in the ground when the cement paste 2 is cured, and thus acts as a kind of skeleton, thereby reinforcing the ground more stably and improving stability. And increases the horizontal and vertical bearing capacity of the ground.

Moreover, in the case of the sub-reinforcement member 113, the interior material 1132 is buried in the cement paste 2 in a state protruding a certain length outside the outer case 1131. In this case, the length and range of the skeleton are increased. The ground can be improved more efficiently and stably.

Furthermore, since the cement paste 2, the main reinforcing member 112, and the sub reinforcing member 113 are rigidly combined, the resistance to horizontal and vertical soil pressure generated in the ground is further increased to ensure stability of the ground. Can.

The above-described embodiments are for illustration only, and those skilled in the art to which the above-described embodiments belong can easily be modified into other specific forms without changing the technical idea or essential characteristics of the above-described embodiments. You will understand. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope to be protected through the present specification is indicated by the claims, which will be described later, rather than the detailed description, and should be interpreted to include all modified or modified forms derived from the meaning and scope of the claims and equivalent concepts thereof. .

1: Ground improvement device 2: Cement paste
10: Auger 11: Outer auger
11a, 12a: Stirring blade 12: Auger head
12b: bit 121: load
20: swivel 20a: incision
20b: injection hole 21: cover
30: supply guide pipe 31: projection
40: unfolding portion 411: first fixed plate
412: First copper plate 413: Connection
421: 2nd fixed plate 422: 2nd copper plate
50: reader 60: drive unit
70: housing 70a: supply hole
80: first additional bit 80a: lifting guide hole
81: mounting portion 90: hammer
100: second additional bit 110: reinforcement
111: pocket member 112: main reinforcement member
1121: frame 1122: reinforcement wall
113: sub-reinforcement member 1131: outer case
1132: interior material 1133: coil spring
120: air supply unit 121: supply pipe

Claims (2)

A stirring blade is formed along the circumference and an outer auger formed of a hollow body and a rod that is elevated along the hollow of the outer auger, connected to the lower side of the rod, a stirring blade is formed along the circumference, and a plurality of bits on the lower side Auger portion comprising auger head is formed,
It includes a swivel that surrounds the outer periphery of the outer auger, forms an injection hole penetrating in the horizontal direction, and directly supplies cement paste to the rotating outer auger with the bottom surface open.
A supply guide pipe coupled to the lower side of the swivel and surrounding the outer auger so that the cement paste descends along the stirring wing and is supplied to the ground.
The deployment portion is installed on the outer surface of the auger head, and connected to the bit, the bit close to the outer surface of the auger head or deployed to be spaced apart from the auger head,
A leader located on the ground,
The driving unit is installed to be elevated on the leader,
The housing is elevated and rotated inside the supply guide tube by the driving unit, and an air inlet is formed on the upper side.
It is installed on the bottom surface of the housing, the first part is formed with a lowering and rotating with the housing to perforate the ground, the first guide bit formed with a lifting guide hole penetrating in the up and down direction,
A hammer that is located in the interior space of the housing and is operated when air is supplied to strike the first additional bit,
The second additional bit is located in the first guide bit of the lifting guide hole, and protrudes to the lower side of the lifting guide hole by the hammer hitting force, thereby drilling the ground.
After falling through the underground hole drilled by the auger, the first additional bit or the second additional bit is blown by a reinforcement part further embedded in the cement paste,
The reinforcement,
A pocket member filled with air inside and blown by the first additional bit or the second additional bit,
It is accommodated in the interior of the pocket member, and a plurality of reinforcing walls are formed in a vertical and horizontal direction in the frame, and when the pocket member is opened, it is exposed to the outside by the first additional bit or the second additional bit. The main reinforcing member that is hit and embedded in the cement paste,
It is accommodated in the interior space of the pocket member, and when the pocket member is exposed, it is exposed to the outside and buried in the cement paste. When exposed to the outside, it is fixed to the pocket member so that it is positioned in a standing or inclined shape around the reinforcement member when exposed to the outside. It includes a sub-reinforcing member formed in a shape or a zigzag shape,
The sub-reinforcing member,
An outer case fixed to the pocket member, one surface open, and an accommodation space formed therein,
The interior material accommodated in the outer case and pressed by the main reinforcement member,
It is fixed to the inner space of the outer case and includes a coil spring to maintain a compressed state by the outer case,
The interior material is a ground improvement device, characterized in that a predetermined length protrudes to the outside of the outer case by the expansion action of the coil spring when the pocket member bursts.
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