KR20180000056A - Boring and mixing machine with streamline structure for soil-cement body and the construction method therefor - Google Patents

Abstract

The present invention relates to a boring and mixing machine with a streamline support structure and a construction method thereof, wherein after inserting a reinforced core material while excavating a rear surface of a structure such as a retaining wall, an injected grouting material and excavation soil are mixed to construct an underground reinforcing body with the excavation soil mixed with the reinforced core material on a rear surface of the structure. The boring and mixing machine with a streamline support structure comprises a streamline drill bit mounted on an outer circumferential surface while accommodating a non-conductive reinforced core material, a mixing blade, and a hollow rod rotating along with a reinforced core material front end fixing port.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stirring and punching apparatus having a streamlined support structure,

The present invention relates to a stirring punching apparatus having a streamlined support structure and a method of construction thereof. More specifically, after inserting the reinforcing core material while digging the back surface of the same structure as the retaining wall, the grouted material and the excavated soil are agitated to stir the reinforcing core material and the excavated soil to construct the underground reinforcing material Structure and a method of constructing the same.

FIG. 1A is a cross-sectional view of a reinforcement material used to prevent collapse of a digging excavation surface after a ground turf using an anchor or a soil nail.

That is, in order to construct the structure (A) in the ground, it is necessary to excavate the ground at a certain depth. When the excavation and construction of the structure, the excavated surface tends to collapse due to the earth pressure. Therefore, a hypothetical wall including soil plate and thumb pile is constructed, Struts may be installed to prevent the wall 10 from being conducted by the earth pressure. However, since such struts are installed across the excavation space, they interfere with construction of the structure (A), thereby deteriorating the workability.

A reinforcing member 20 such as an anchor or a soil nail is installed so as to extend below the back surface of the temporary wall body 10.

That is, the reinforcing member 20 such as an anchor or a soil nail serves as a fixing anchor for fixing the temporary wall 10 to the excavation surface.

At this time, as the excavation depth becomes longer, the earth pressure acting on the temporary wall body 10 becomes larger, so that the installation depth of the reinforcing material 20 such as an anchor or soil nail is inevitably deeper. However, in the case of an underground obstacle, There is a case where the strut can not be installed because the reinforcement 20 such as an anchor or a soil nail can not be installed.

Particularly, in the case where the upper part of the ground is a railway roadbed through which the railway passes, if a large number of perforation holes H for forming the reinforcing material 20 are formed on the roadbed, a bedrock settlement due to the perforation holes H may occur. Can be seriously affected.

It is possible to prevent the excavation surface collapse and the like required even when the reinforcing member 20 inserted in the perforation hole H is installed without providing the strut and if the depth and the number of the perforation holes can be minimized, And the like can be prevented.

A technique applicable in connection with this is shown in Fig. 1B (Japanese Patent Application Laid-Open No. 2005-226222: Reinforced existing retaining wall structure and Reinforcement method of original retaining wall).

1B, the excavating stirring rod 11 is inserted into a casing (not shown) provided with a reinforcing member in a state where a core member 5 having a conical fusing unit 17 is inserted into the tip end side of the hollow rod 12 2).

When the excavating stirring rod 11 enters the inside of the casing 2 and the excavating vane 13 at the front end passes the casing 2, a solid fire such as cement milk is supplied into the hollow rod 12, The ground is rotated and pushed while discharging the high-temperature fire from the discharge port 16 provided at the side near the excavating blades of the front end of the swash plate 12.

By this excavation, the excavated soil and the solidifying agent solution are stirred and mixed by the stirring blades 15 to form the soil cement 4a. When the pavement is pushed to a predetermined depth, the soil cement 4a is built up to a predetermined depth, and the soil cement column body 4 'is constructed.

If the earth cement column body 4 'having a predetermined length is formed after the punching to the predetermined depth is completed, the core material 5 is pushed into the soil cement column body 4' by the cone- The excavation stirring rod 11 is rotated in the reverse direction while the high-fire supply is continued.

The core member 5 is left in the soil cement column body 4 'by the cone-shaped fixing section 17 and the tip opening of the hollow rod 12, which is blocked by the cone-shaped fixing section 17, At the same time, the solid fire layer 6 is formed around the core 5 without being agitated due to the discharge of the solid fire.

Since the reinforcing member is a bar-shaped reinforcing member having a large diameter, the reinforcing effect can be exhibited even when the length of the bar-shaped reinforcing member is shortened as compared with the case of the small-diameter reinforcing member, so that the time required for the construction can be shortened.

At this time, the idling prevention member 14 and the straight excavation blade 13 are mounted at the tip of the excavation stirring rod 11, but the rotary resistance is too strong even for the earth soil so that the excavation energy consumption is too large. Quality control is not easy,

Although the discharge port 16 is formed at the tip end of the excavating stirring rod 11, there is no guarantee that the soil is stirred evenly on the disturbed ground during discharging, so that the construction quality of the soil cement shaft body 4 '

It can be seen that corrosion of the core material 5 is caused by the use of the rod-like reinforcing material, and the method of remaining the core material 5 in the soil cement column 4 ' .

Accordingly, the present invention provides a method of drilling a grouting material more stably even when a ground reinforcement is required in a section requiring strict settlement control during excavation and drilling of a railway line such as a railway, or when a short underground reinforcement is needed due to lack of the road- The present invention relates to a stirring punching apparatus having a pneumatic support structure capable of maintaining a pneumatic wall which can be agitated and can be safely installed with less excavation energy without corrosion, and a technical problem to be solved do.

To this end, the stirring and punching apparatus having a streamlined support structure according to the present invention

A grouting material injection tube is separately formed in the longitudinal direction inside the hollow portion S as a tubular member in which the hollow portion S is continuously formed in the longitudinal direction. In the tip portion communicating with the grouting material injection tube, A hollow drill bit, a stirring blade, and a reinforcing core material tip end fastener mounted on an outer circumferential surface of the hollow core, which are formed by protruding from the outer circumferential surface of the hollow core, And a grooved second discharge port formed at a rear end of the hollow rod so as to communicate with a grouting material injection tube), and the other end is connected to the end of the bit body And a streamlined drill bit including a bit body exposed to the back, wherein the streamlined drill bit It is possible to reduce the rotational torque by the front surface of the hollow rod so as to have a streamlined support structure is to reduce the energy required for the excavation digging construction.

Further, in the method of constructing the stirring and punching apparatus having the streamlined support structure according to the present invention,

(a) initial setting an agitation punching device on an excavation surface (B) to construct a ground reinforcement body in which a nonconductive reinforcing core material and a grouting material are integrated with each other; (b) advancing the ground with less excavation energy by the end drill and the streamlined drill bit of the agitator drilling apparatus while rotating the hollow rod of the agitator drilling apparatus and centering the excavation center by the centering vane; And (c) a second drilling bit of the streamlined drill bit through the rotation of the hollow rod and a second discharge port of the grouting material of the hollow rod to the excavated soil disturbed by the back surface of the end drill portion and the streamlined drill bit, So that the excavated soil and the grouting material are primarily agitated by the stirring blade.

According to the present invention, there is provided a stirring and punching apparatus comprising a streamlined drill bit, a centering blade, and a stirring blade for stably forming a reinforcing core material by stirring the grouting material without clogging the excavated soil and minimizing the excavation resistance during piercing It is possible to provide a stirring and perforating apparatus having a streamlined support structure capable of providing a reinforcing structure as a sole reinforcement formed by agitating a nonconductive reinforcing core material, a grouting material, and a digging soil, and a construction method thereof.

Further, the stirring and perforating apparatus may include a hollow rod capable of piercing with a nonconductive reinforcing core inserted therein, a structure capable of pouring a grouting material into the hollow rod and agitating and discharging the material at the tip, and discharging the grouting material simultaneously with the punching A drilling drill bit having a grouting reed and discharge port, a stirring drilling apparatus having a streamlined support structure having a center holding blade supported in multiple directions by a leading end inserted in a perforated ground and free from rotation of a hollow rod, do.

In addition, the stirring and perforating apparatus may include a nonconductive reinforcing core member for connecting the tip drill unit with an edge fin and a pin fixing member constituting the core member forward end fixing member, and a nonconductive reinforcing core member for fixing the nonconductive reinforcing core member to the pin fixing member at the time of inserting the edge pin. It is possible to provide a stirring and perforating apparatus having a streamlined support structure capable of providing a shape and a processing method of a cut nonconductive reinforcing core material and a method of constructing the same.

Furthermore, a streamlined drill bit, which is capable of minimizing the resistance during rotation and stirring the excavated soil and the grouting material, is provided with a streamlined drill bit. When the excavated soil and the grouting material are punched and drawn, The present invention can provide a stirring and punching apparatus having a streamlined support structure capable of holding a pneumatic wall and capable of centering and a construction method thereof.

FIG. 1A is a view showing the ground reinforcement construction by anchor and soil nailing,
FIG. 1B is a construction flowchart and a structural perspective view of a conventional stirring punching apparatus,
FIGS. 2A and 2B are a perspective view and a cross-sectional view, respectively, of a stirring and perforating apparatus having a streamlined support structure capable of centering and maintaining a wall,
FIG. 3A and FIG. 3B are diagrams showing primary and secondary stirring operations of excavated soil by the stirring and perforating apparatus according to the present invention,
FIGS. 4A, 4B, 4C, and 4D show flowcharts of a method of constructing a stirring and punching apparatus according to the present invention.

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

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

[Agitation punching apparatus having a streamlined support structure]

Figs. 2A and 2B show a structural perspective view and a cross-sectional view of a stirring punching apparatus 100 having a streamlined support structure (simply referred to as a stirring punching apparatus 100).

The stirring and perforating apparatus 100 includes a hollow rod 110, a streamlined drill bit 120, a centering vane 130, a stirring vane 140, a reinforcing core material tip fixture 150, and a nonconductive reinforcing core material 160 .

The hollow rod 110 is embodied as a pipe-shaped steel pipe, and a hollow portion S into which a nonconductive reinforcing core material 160, which will be described later, can be inserted is formed continuously in the longitudinal direction.

A reinforcing core material tip end fixture 150 to be described later is mounted on the distal end of the hollow rod 110 and a streamlined drill bit 120 and a centering vane 130 and a stirring vane 140 are mounted on the outer circumferential surface. In particular, the circular flange portion 112 is spaced apart from the center holding vane 130 so as to surround the outer circumferential surface to be protruded. The body portion 131 of the centering vane 130 is enclosed and mounted between the flange portions 112 formed along the outer circumferential surface of the hollow rod.

2A and 2B, a grouting material injection tube 113 is separately formed in the longitudinal direction around the hollow portion S of the hollow rod 110, and the grouting material injection tube 113 is communicated with the grouting material injection tube 113 A grouting first discharge port 111 is formed at the tip end so that the grouting material G can be primarily discharged from the hollow rod front end.

The hollow rod 110 is rotated by a rotating device (not shown) while accommodating the non-conductive reinforcing core material 160. The hollow rod 110 rotates by means of a streamlined drill bit 120, a stirring blade 140, (150) rotate together.

2A, the streamlined drill bit 120 is integrally formed radially on the outer circumferential surface of the hollow rod 110 as shown in FIG. 2A, and has a basic function of rotating and drilling the ground when rotating together with the hollow rod 110.

The streamlined drill bit 120 is formed of a bit body 121 having a cross shape, for example, once with respect to the hollow rod as compared with the excavating wing 13 of FIG. 1B, ) Is formed as a streamlined front portion 122. [0052] As shown in FIG.

Accordingly, since the rotation resistance with the ground is extremely high when the gull wing is rotated, the present invention has the streamlined front portion 122, which has the effect of remarkably reducing the rotational resistance during rotation. At this time, a plurality of bits 124 are mounted on the surface of the streamlined front portion 122.

At this time, by adjusting the angle of the bit 124, it is possible to form not only the soil on the front portion but also the structure for easily removing the rock. That is, the conventional rotary bit can only excavate the soil, but the present invention can also excavate the rock.

2B, a grouting second discharge port 123 is formed on the end surface of the end portion of the bit body 121. [ The grouting second discharge port 123 has a U-shaped shape, and one side thereof is communicated with the grouting material injection tube 113, and the other side is exposed to the end surface of the bit body 121.

The grouting material G is more efficiently discharged to the excavated soil by the grouting first discharge port 111 formed at the tip end of the hollow rod 110 and the grouting second discharge port 123 formed at the end surface of the bit body 121 Since the streamlined drill bit 120 is rotated together with the hollow rod, the stirring effect is very excellent, which is very advantageous for quality control.

Four streamlined drill bits 120 are shown in a cross shape, but three or less can be provided in the case of a soft ground, and five or more can be provided depending on the ground rigidity. The drill bit 120 has a bit body 121, This is because mounting on the outer circumferential surface is easy if necessary.

As a result, the front surface of the hollow rod 110 has a streamlined support structure by the streamlined drill bit 120, so that the rotational torque of the hollow rod can be reduced, and drilling energy required for excavation construction can be greatly reduced.

The centering vane 130 is located behind the streamlined drill bit 120 and is not rotated together with the hollow rod 110 to hold the center of rotation of the hollow rod 110, 131) and a blade (132).

The body portion 131 is set so as to surround the hollow rod 110 between the flange portions 112 spaced apart along the outer circumferential surface of the hollow rod 110. In FIG 2A, .

At this time, the body 131 does not rotate together with the hollow rod, so that the blade can be embedded in the ground during excavation.

The blade 132 is a wing extending radially from the outer circumferential surface of the body 131. The blade 132 has an extended length so as to be larger in diameter than the drilling diameter formed by the streamlined drill bit 120, And serves as a support for holding the center of rotation of the rod 110.

At this time, an insertion resistance may be generated in the excavation direction. Thus, in the present invention, the end portion of the blade 132 forms a streamlined chamfer so that the insertion resistance is not large.

The center holding vane 130 is configured such that two semicircular barrels 131 formed with a plurality of blades 132 are set so as to enclose between the flanges 112 of the hollow rod 110, And the coupling holes 133 are formed integrally with the hollow rod 110 using connecting bolts.

Therefore, the blade 132 can be installed on the hollow rod without any other fastening means, the rotational resistance is reduced, and the blades 132 are overlapped with each other, so that sufficient supporting rigidity can be ensured.

The stirring wing 140 is integrally formed on the outer circumferential surface of the hollow rod at the rear of the centering vane 130 and is formed in a state in which the grouting material is discharged to the disturbed ground in the excavation and drawing process It is understood that two pieces are formed in FIG. 2A, but the number of formed pieces can be changed.

At this time, the stirring vane 140 is preferably formed in a streamlined shape to be advantageous in resistance to agitation in stirring the excavated soil, and it is also possible to use a structure in which a plurality of combs are formed in the wing portion.

The reinforcing core material tip end fastener 150 serves as a drill when the hollow rod 110 rotates in a hollow rod while the nonconductive reinforcing core material 160 inserted into the hollow rod 110 is fixed to the tip end of the hollow rod 110 And the nonconductive reinforcement core 160 to remain when the hollow rod reaches the final depth.

The reinforcing core material tip fastener 150 includes an edge fin 151, a pin fixture 152, and a tip drill 153.

The edge pin 151 is formed of a wedge portion 151a having a smaller diameter at one side so as to be inserted into the split distal end portion of the nonconductive core member 160, And a head portion 151b.

The pin fixture 152 is formed in a horizontal plate shape on one side of the housing part 152a and temporarily mounted on the end surface of the hollow rod 110, And a connecting flange portion 152b.

2A, the pin fixing hole 152 has a fixing hole 152c passing through the connection flange 152b to the fixing pin 114 formed on the end surface of the hollow rod 110, And is mounted while being inserted.

The tip drill 153 is formed as a drill that serves as a drill when the hollow rod is rotated. The opposite end of the drill 153 is formed with a rear surface inserting hole 153a. The edge of the edge pin 153 is inserted into the non- (151) is inserted into the back surface inserting port (153a) so as to come into contact with the clogged tip.

The housing portion 152a of the pin fixture and the insertion head of the edge pin 151 are inserted into the back face inserting opening 153a and the front end of the edge fin 151 is abutted against the clogged end of the back face inserting opening 153a Is set.

The non-conductive reinforcing core member 160 may be formed of, for example, an FRP rod member to prevent corrosion. That is, it can be corroded when it is made of a steel material, and the reinforcing core material is made of such a nonconductive material.

The nonconductive reinforcement core 160 is inserted into the hollow portion of the hollow rod 110. The tip portion of the nonconductive reinforcement core 160 is separated to a predetermined depth so that the edge fin 151 can be inserted into the end surface. So that the edge pin 151 is inserted into the split end space S2 to be engaged.

When the nonconductive reinforcing core 160 carried by the reinforcing core fastener 150 is struck from the rear side, the nonconductive reinforcing core 160 contacts the tip drill 153, the pin fixture 152, the edge pin 151, And remains inside the ground reinforcement.

That is, since the pin fixing hole 152 is inserted into the fixing pin 114 formed on the end surface of the hollow rod 110 while inserting the fixing hole 152c passing through the connection flange 152b, the nonconductive reinforcing core 160 The non-conductive reinforcing core 160 is detached together with the tip drill 153, the pin fixture 152, and the edge fin 151 when striking the stator core from the rear.

The agitation and punching apparatus 100 of the present invention is constructed so that the disturbed excavated soil formed by rotatably excavating the ground by the end drill unit 153 and the streamlined drill bit 120 of the reinforcement core end fastener 150 and the hollow rod 110, The grouting material G discharged by the first discharge port 111 of the grouting material and the second discharge port 123 of the grouting material formed on the streamlined drill bit 120 is moved forward and backward by using the stirring blade 140, It is possible to construct the embedded ground reinforcement body by leaving the nonconductive core material 160 alone without clogging the excavated soil,

The excavation center is not shaken when excavated by the hollow rod by the center holding vane 130, which is very advantageous for construction and quality control,

The nonconductive reinforcement core 160 is separated from the hollow rod inside the ground reinforcement body by a simple impact and left as a reinforcing core material, so that it is possible to construct a ground reinforcement body such as soil cement very effectively.

[Primary and secondary agitation of excavated soil with the agitation punching apparatus 100]

FIGS. 3A and 3B show primary and secondary agitating operations of the excavated soil by the agitation punching apparatus 100 according to the present invention.

3A, the non-conductive reinforcing core 160 is attached to the hollow rod 110 by a reinforcing core end fastener 150 provided with a tip drill 153, The rod 110 is equipped with a streamlined drill bit 120, a centering vane 130, and a stirring vane 140.

When the hollow rod 110 is initially set and rotated using a rotating device not shown on the excavation surface, the ground of the excavation surface is excavated by the help of the tip drill 153 and the streamlined drill bit 120 do.

At this time, since the center holding vane 130 holds the center of excavation of the hollow rod, the rotational energy can be utilized to the maximum.

So that the grouting material is discharged to the excavated soil through the second discharge port of the grouting material of the streamlined drill bit 120 and the first discharge port of the grouting material of the hollow rod 110 while advancing through the rotation of the hollow rod. The excavated soil and the grouting material are first agitated by the rotating agitating blades 140 while the grouting material is discharged to the excavated soil. This operation continues until the excavation depth is reached.

Next, according to FIG. 3B, the bipolar conductive reinforcing core material 160 is left in the excavated soil and the grouting material that have been stirred from the agitation perforation apparatus 100 extending from the excavated soil tip portion, and the hollow rod is reversed while being rotated backward .

That is, when the rear end of the nonconductive reinforcing core material 160 carried by the reinforcing core material leading end fastener 150 is hit, the nonconductive reinforcing core material 160 is wound around the tip drill part 153, the pin fixing pin 152, the edge pin 151, And is left inside the ground reinforcement member 200.

The excavated soil and the grouting material G are agitated by the streamlined drill bit 120, the centering vane 130 and the stirring vane 140, and the grouting material is further discharged It does not matter whether you move it backward.

As a result, the agitation punching apparatus 100 according to the present invention effectively agitates the excavated soil and the grouting material without first and secondly covering the excavated soil, and when the grouting material is hardened, the non- It can be seen that the ground reinforcement can be constructed.

[Method of constructing stirring punching apparatus (100)] [

4A, 4B, 4C, and 4D show a flowchart of the method of constructing the stirring and perforating apparatus 100 according to the present invention.

First, as shown in FIG. 4A, a temporary wall is constructed on an excavation surface formed by a trencher to reinforce an underground structure, a retaining wall, and a bottom part of a railway roadbed, and a ground, in which a nonconductive reinforcing core material and a grouting material are integrated with each other, The drilling apparatus 100 is initially set on the excavation surface B in order to construct the reinforcement member 200.

A nonconductive reinforcing core member 160 is mounted on the hollow rod 110 by a reinforcing core material tip end fixture 150 provided with a tip drill 153, It can be seen that the streamlined drill bit 120, the centering vane 130, and the stirring vane 140 are mounted.

Next, as shown in FIG. 4B, the hollow rod 110 of the stirring and perforating device 100 is rotated using a rotating device (not shown) to advance the stirring and perforating device 100 downwardly. Preferably, the underground reinforcement by the agitation punching apparatus is formed in a downward direction of about 20 degrees in order to improve the stability against the ground sliding (arc action failure) on the back of the excavation surface and improve the workability and economical efficiency.

This advancement can effectively hold the center of excavation by the centering vane 130 and effectively drill the ground with less drilling energy by the tip drill 153 and the streamlined drill bit 120.

In addition, by adjusting the angle of the bit 124 of the rotating bit 120, it is possible to form the structure in which the arm is easily removed as well as the soil in the front portion. That is, the conventional rotary bit can only excavate the soil, but the present invention can also excavate the rock.

In this process, the excavated soil disturbed by the end drill unit 153 and the streamlined drill bit 120 is generated. In this process, the grout material of the streamlined drill bit 120 through the rotation of the hollow rod 110, The grouting material is radially discharged to the excavated soil through the first outlet 123 of the hollow rod 110 and the grouting material first outlet 111 of the hollow rod 110 so that the excavated soil and the grouting material are firstly effectively stirred by the stirring vane 140 .

The agitating operation progresses to the planned depth and the grouting material G and the excavated soil which are not clogged form the underground reinforcement 200 such as the soil cement and the hollow portion S of the agitation punching apparatus 100, And the non-conductive reinforcing core material 160 mounted on the hollow rod 110 by the reinforcing core material end fastener 150 is set naturally at the center of the underground reinforcing body.

Next, as shown in FIG. 4C, when the rear end of the nonconductive reinforcing core material 160 is struck, the reinforcing core material end fastener 150 to which the nonconductive reinforcing core material 160 is transferred remains together. When the residual is confirmed, ) To rotate backward.

In this process, the primary agitated excavated soil and the grouting material are secondarily agitated by the streamlined drill bit 120, the centering vane 130 and the stirring vane 140, thereby enabling a more effective underground reinforcement construction.

Next, as shown in FIG. 4D, the rear end of the nonconductive reinforcing core member 160 is fixed to the wall of the excavated surface by using the fixing plate 300 to complete the final underground reinforcing member. According to the sectional view aa of FIG. 4d, in the underground reinforcement according to the present invention, the contact areas between the nonconductive reinforcement core 160 and the ground reinforcements are maximized by the first and second agitation, Is increasing.

When the grouting material is agitated and the grouting material (cement milk) and the excavated soil are mixed with each other, sole cement is formed and the non-conductive reinforcing core material 160 is installed at the center of the soil cement, The remaining reinforcing core material tip fastener 150 also plays a role of bulb, which is very advantageous in preventing the drawing.

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

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

100: stirring punching device 110: hollow rod
111: grouting material first outlet 112: flange portion
113: grouting re-injection tube 114:
120: streamlined drill bit 121: bit body
122: streamlined front part 123: grouting material second outlet
124: bit 130: centering wing,
140: stirring wing 150: compensating core material tip fastener
151: Edge pin 151a: Wedge
151b: insert head 152: pin fixture
152a: housing part 152b: connection flange part
152c: Fixing hole 153: End drill
153a: Bottom opening 160: Nonconductive reinforcement core
200: ground reinforcement member 300:

Claims (17)

A grouting material injection tube 113 is formed in the longitudinal direction separately around the hollow portion S as a tubular member in which the hollow portion S is continuously formed in the longitudinal direction and the grouting material injection tube 113 is communicated with the grouting material injection tube 113 And a circular flange portion 112 is spaced apart from the first flange portion 112 so as to surround the outer circumferential surface to accommodate the non-conductive reinforcing core material 160. The outer circumferential surface of the non- A hollow rod 110 in which the streamlined drill bit 120, the stirring vane 140, and the reinforcing core end fastener 150 are rotated together;
The front end of the hollow rod 110 is formed with a streamlined front portion 122 having a bit 124 on its surface and a grouting second discharge port 123 is formed on the rear end of the hollow rod 110, And a streamlined drill bit (120) communicating with the bit body part (121), the bit body part (121) communicating with the bit body part (121)
The drilling device according to claim 1, wherein the drill bit (120) has a streamlined support structure to allow a front surface of the hollow rod to have a streamlined support structure, thereby reducing rotational torque and reducing excavation energy required for drilling. The method according to claim 1,
The grout material G is injected into the grouting material injection pipe 113 and the grouting first discharge port 111 formed at the tip of the hollow rod 110 and the grouting second discharge port 111 formed at the end surface of the bit body 121 123), the grouting material (G) is discharged together with the excavated soil and agitated by the stirring vane (140) rotating together with the hollow rod. The method according to claim 1,
A centering vane 130 which is not rotated together with the hollow rod 110 is further formed on the outer peripheral surface of the hollow portion between the streamlined drill bit 120 and the stirring vane 140,
The center holding vane 130 is embedded in the ground and serves to hold the center of rotation of the hollow rod 110. The center holding vane 130 has two body portions 131 formed with a plurality of blades 132, And the blade 132 is integrally formed with the hollow rod 110 by using a connecting bolt in the fastening hole 133 formed in the blade 132 so that the fastening hole 133 can be formed without a separate fastening means A stirring punching device having a streamlined support structure for mounting on a hollow rod. The method of claim 3,
The stirring wing (140)
And is formed integrally with the outer circumferential surface of the hollow rod at the rear of the centering vane 130. The grouting material acts to move the grouting material forward and backward after the hollow rod 110 is discharged to the disturbed ground, Wherein a plurality of combs are used, and the end of the blade (132) of the centering vane has a streamlined support structure for making a streamlined chamfer so that the insertion resistance is reduced. The method according to claim 1,
The reinforcing core material tip fastener (150)
The other end is formed by a wedge portion 151a having a smaller diameter so as to be inserted into the split distal end of the nonconductive core member 160 and the other end is formed by an edge pin 151b composed of an insertion head 151b inserted into the tip drill 153, And a streamlined support structure for fixing the nonconductive reinforcing core member (160) inserted into the hollow rod (110) to the distal end of the hollow rod (110). 6. The method of claim 5,
The reinforcing core material tip fastener (150)
Serves as a drill when rotating the hollow rod and serves to retain the nonconductive reinforcement core 160 when the hollow rod reaches the final depth,
A connecting flange portion 152b formed on the one side of the housing portion 152a to form a horizontal plate and temporarily mounted on the end surface of the hollow rod 110, And a pin fixture 152 in the form of a socket having a hollow formed therein
The pin fixture 152 is inserted into the fixing pin 114 formed on the end surface of the hollow rod 110 while inserting a fixing hole 152c passing through the connection flange 152b, Device. The method according to claim 6,
The reinforcing core material tip fastener (150)
And the edge of the edge pin 151 inserted into the split distal end of the nonconductive reinforcing core member 160 is inserted into the back surface inserting port 153a to be in contact with the clogged tip.
The housing portion 152a of the pin fixture and the insertion head of the edge pin 151 are inserted into the back face inserting opening 153a and the front end of the edge fin 151 is set to abut the clogged end of the back face inserting opening 153a Wherein the pivoting support structure has a streamlined support structure. 8. The method of claim 7,
The head portion of the reinforcing core material tip end fastener 150 is formed as a drill portion serving as a tip drill portion 153 and serving as a drill for drilling when the hollow rod is rotated. When the nonconductive reinforcing core material 160 is struck from behind, Has a streamlined support structure that is left together with the tip drill (153), the pin fixture (152), and the edge fin (151) so as to remain inside the ground reinforcement. 6. The method of claim 5,
The nonconductive reinforcement core (160)
And a front end space formed by dividing the front end portion into a predetermined depth so as to be inserted into the end end face of the edge fin (151) S2 so that the edge pin 151 is inserted and joined by the reinforcing core material end fastener 150. The agitation punching apparatus according to claim 1, The method according to claim 1,
Wherein the bit (124) of the rotating bit (120) has a streamlined support structure that allows for soil and female removal at the front by angle adjustment. (a) initial setting the agitation punching apparatus 100 of claim 1 on an excavation surface B to construct a ground reinforcement member 200 in which a nonconductive reinforcing core material and a grouting material are integrated with each other;
(b) The hollow rod 110 of the stirring and perforating apparatus 100 is rotated to center the excavation center by the centering vane 130 so that the tip drill unit 153 and the streamlined drill bit 120) with less excavation energy; And
(c) The grouting material second discharge port 123 of the streamlined drill bit 120 is rotated through the rotation of the hollow rod 110 to the excavated soil disturbed by the back surface of the end drill unit 153 and the streamlined drill bit 120 And a step of radially discharging the grouting material through the first discharge port (111) of the grouting material of the hollow rod (110) so that the excavated soil and the grouting material are primarily agitated by the stirring blade (140) The method comprising the steps of: 12. The method of claim 11,
After the step (c), the rear end of the non-conductive reinforcing core material 160 installed in the stirring and perforating device 100 is struck to leave the reinforcing core material end fastener 150, to which the nonconductive reinforcing core material 160 is transferred, The excavated soil and the grouting material are agitated by the streamlined drill bit 120, the centering vane 130 and the stirring vane 140 while the agitated perforation apparatus 100 is reversed and rotated backward (d). < / RTI > 13. The method of claim 12,
After the step (d), the rear end of the nonconductive reinforcing core material 160 is fixed on the excavated surface of the excavated surface by using the fixing plate 300 to complete the final underground reinforcing body, and the grouting material and the excavated soil When the grouting material is agitated, the soil cement is formed. When the grouting material is cured, the non-conductive reinforcing core material 160 is installed at the center of the soil cement, and the remaining reinforcing core material tip fastener 150 serves as a bulb Wherein the slurry-supporting structure further comprises a slurry support structure. 13. The method of claim 12,
In the stirring punching apparatus 100 of the step (a), the non-conductive reinforcing core material 160 is attached to the hollow rod 110 by the reinforcing core material tip end fastener 150 provided with the tip drill 153, The hollow rod 110 is equipped with a streamlined drill bit 120, a centering vane 130 and a stirring vane 140,
A connecting flange portion 152b formed on the one side of the housing portion 152a to form a horizontal plate and temporarily mounted on the end surface of the hollow rod 110, The pin fixture 152 is inserted into the fixing pin 114 formed on the end surface of the hollow rod 110 through the connection flange portion 152b The fixing hole 152c is inserted and mounted
In step (d), when the nonconductive reinforcing core material 160 is struck from behind, the nonconductive reinforcing core material 160 is left together with the tip drill 153, the pin fixture 152, and the edge fin 151, A method of constructing a stirring and perforating device having a streamlined support structure that remains within a sieve. 12. The method of claim 11,
The non-conductive reinforcing core material 160 of the step (a)
In order to prevent corrosion, the FRP rod member is inserted into the hollow part of the hollow rod 110. The front end space S2 (S2 And an edge fin 151 is inserted into the edge of the reinforcing core material tip end fixture 150 so that the edge pin 151 is inserted. 11. The method of claim 10,
In the step (a), the stirring and perforating apparatus 100 is constructed such that a temporary wall is formed on an excavation surface formed through a tearing machine to reinforce the ground under the railway roadbed, and a nonconductive reinforcing core material and a grouting material The streamlined drill bit 120, the centering vane 130 and the stirring vane 140 are used to construct a streamlined drill bit 120 so as to reduce the rotational resistance with respect to the ground. And the end of the blade 132 of the centering vane 130 makes a streamlined chamfer so that the insertion resistance is not large and the stirring vane 140 stirs the excavated soil And a streamlined support structure formed in a streamlined shape so as to be advantageous for resistance by agitation. 12. The method of claim 11,
Wherein the stirring and perforating device (100) of the step (a) has a streamlined support structure that is set downward at an angle of about 20 degrees downward on the excavation surface.

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