KR102455059B1 - Caulking packer simultaneous injection steel pipe and construction method using it - Google Patents

Abstract

The present invention relates to a caulking packer co-injection steel pipe, which enables accurate construction by providing a separate nailing member at a front end of the co-injection steel pipe and firmly supporting the steel pipe penetrated into a ground, and a construction method using the same. The co-injection steel pipe of the present invention comprises: a grouting steel pipe; a grouting hole; a main shaft bolt; and a main injection pipe.

Description

Caulking packer simultaneous injection steel pipe and construction method using it

The present invention relates to a caulking packer co-injected steel pipe and a construction method using the same, and more particularly, by providing a separate nailing member at the front end of the co-injecting steel pipe so as to firmly support the steel pipe penetrated into the ground, accurate construction It relates to a caulking packer co-injected steel pipe and a construction method using the same.

In general, grout or grouting is used to reinforce the bearing capacity of the excavated ground when constructing tunnels in civil engineering works, or to inject fillers into cracks and cavities in the ground for leak prevention work and soil stability. The filling material (also called 'grouting material') is filled using gravity or a pump.

In this grouting method, a steel pipe is installed in the ground, a packer is installed inside the steel pipe, and a grouting material is injected and solidified, thereby making the steel pipe and the ground one, and increasing the shear strength of the soil and rock. Therefore, it is a very advantageous construction method in terms of constructability and economic feasibility.

In general, the steel pipe grouting method consists of a step of drilling a soft ground, a step of inserting a steel pipe with a strainer installed into the drilling hole, a step of inserting a sealing material between the steel pipe and the drilling hole, and a step of injecting cement while installing a packer.

However, since this method inserts the steel pipe after drilling, it is difficult to insert the steel pipe due to the collapse of the drilling hole, the mixing of foreign substances, etc.

In order to solve this problem, a direct drilling device for inserting a steel pipe at the same time as the drilling has been developed.

1 is a plan view showing the structure of a co-injected steel pipe having a conventional nailing member.

As shown in Fig. 1, the conventional co-injected steel pipe having a nailing member is a co-injected steel pipe having a nailing member to reinforce the ground by penetrating into the ground to perform grouting, A plurality of grouting holes are formed through the outer surface to form a row, a hollow 11 is formed inside, and the steel pipe body 10 penetrates to a certain depth into the interior of the ground, and the hollow 11 inside the steel pipe body 10 It includes a partitioning part 20 installed in the hollow 11 of the steel pipe body 10 so as to be selectively partitioned, and the partitioning part 20 is spaced apart from each other at regular intervals along the longitudinal direction of the steel pipe body 10. A first support plate 21 installed along the radial direction of the steel pipe body 10 inside the hollow 11, and a steel pipe body inside the hollow 11 spaced apart from the first support plate 21 by a predetermined interval ( 10) is installed in the space between the second support plate 22 and the first support plate 21 and the second support plate 22 installed along the radial direction of the first support plate 21 and the second support plate 22. The first support plate 21 is attached to the outer surface so that the inner surface and the side surface of the steel pipe body 100 are in close contact with each other by being pressed by the elastic member 23 so that the hollow 11 is partitioned, and the first support plate 21 is movable. The first injection pipe 24 through which the grouting liquid is injected is fixedly coupled to the movable surface, and the second supporting plate 22 is fixedly coupled to the outer surface so that the second supporting plate 22 is movable, and the first injection pipe 24 It consists of a second injection pipe 25 provided on the outer surface of the.

The steel pipe body 10 is formed to have a circular cross section, and a hollow 11 is provided inside the steel pipe body 10 so that the grouting liquid can flow out after filling the inside, and is formed of a tubular member having a certain length. and a plurality of grouting holes 10a are formed through the outer surface of the steel pipe body 10 .

The partitioning part 20 serves to partition the hollow 11 into a plurality of spaces, the first support plate 21 and the second support plate 22, the elastic member 23, and the first and second injection pipes 24, 25) consists of

The first support plate 21 is fixed to the outer surface of the first injection tube 24 , and the second support plate 22 is fixed to the outer surface of the second injection tube 25 , the first injection tube 24 is the second It is disposed inside the injection tube 25 and the first support plate 21 and the second support plate 22 move in a mutually adjacent direction to press the elastic member 23 provided therebetween, thereby forming a plurality of hollows 11. is partitioned into the space of

In addition, a plurality of through-holes 24a and 25a are formed through the outer surfaces of the first injection pipe 24 and the second injection pipe 25 , respectively, and the grouting liquid injected through the first injection pipe 24 is partitioned into a hollow hollow. (11) can be made to leak.

The nailing member 30 serves to support the steel pipe body 10 penetrating into the ground by being fixedly coupled to the outer surface of the front end of the steel pipe body 10 by welding or the like.

However, in this conventional co-injection steel pipe having a nailing member, as described above, since the nailing member is fixed to the outer surface of the steel pipe by bonding such as welding, the nailing member is adjusted according to the penetration depth of the steel pipe. Since the position cannot be changed, construction is inconvenient, and since the nailing member is fixedly joined to the outer surface of the steel pipe, there is a problem that the nailing member cannot be recycled.

And, in order to divide the hollow 11 of the steel pipe body 10 into a plurality of spaces, the first injection pipe 24 and the second injection pipe 25 protruding to the outside of the steel pipe body 10 are moved to move the first When the support plate 21 and the second support plate 22 move in a mutually close direction to press the elastic member 23, the elastic member 23 is disposed in a position close to the area protruding to the outside of the steel pipe body 10. Although the pressing force for pressing can be strong, the pressing force for pressing the elastic member 23 located far from the area protruding to the outside of the steel pipe body 10 may be relatively weak.

Therefore, since the pressing force applied to the telescopic member 23 located far from the region protruding to the outside of the steel pipe body 10 is lowered, and the deformation of the elastic member 23 is not performed properly, the side surface of the elastic member 23 and As the adhesion to the inner surface of the steel pipe body 10 is lowered, the pressure is not uniformly applied when the grouting liquid is injected through the first injection pipe 24, and as a result, the simultaneous injection steel pipe having the nailing member is accurately constructed. There is a problem that it doesn't work.

Republic of Korea Patent No. 10-0478321

The present invention enables the position of the nailing member provided at the front end of the co-injected steel pipe to be moved according to the depth at which the steel pipe is penetrated, thereby improving the convenience of construction and the degree of freedom in design, and at the same time, it is possible to attach and detach the nailing member. An object of the present invention is to enable recycling of the nailing member.

The present invention is characterized in that it is a simultaneous injection steel pipe having a nailing member that can reinforce the ground by penetrating into the ground to perform grouting.

In one embodiment, the co-injection steel pipe includes a grouting steel pipe formed in a tubular shape to be inserted into the ground, and a plurality of grouting steel pipes on the outer surface of the grouting steel pipe so that the grouting solution injected into the grouting steel pipe is injected between the perforated hole and the grouting steel pipe outer surface. The grouting hole formed by It consists of a plurality of main injection pipes formed for injection, and the simultaneous injection steel pipe is movable from one side of the outer surface of the grouting steel pipe, and is detachably provided to support the grouting steel pipe penetrated into the ground. ; and partition means for partitioning the inner space into a plurality of parts by being spaced apart from each other in the longitudinal direction inside the grouting steel pipe, and the nailing means is made of a tubular thread having a thread formed on the outer surface and inserted into the outer surface of the grouting steel pipe The nailing member is formed, the member fixing plate is screwed to the outer surface of the nailing member so that the tube surface is in contact with the outer surface of the ground to support the grouting steel pipe, and a screw on the outer surface of the nailing member to prevent the flow of the member fixing plate Consists of a member fixing nut that is fastened and one side is formed to press the member fixing plate, and the dividing means is fixed along the radial direction of the grouting steel pipe inside the grouting steel pipe at a location spaced apart from each other along the longitudinal direction of the grouting steel pipe A fixed plate installed and formed so as to be installed and disposed along the radial direction of the grouting steel pipe inside the grouting steel pipe at a position spaced apart from the fixed plate by a predetermined distance, and fixed to the outer surface of the main injection pipe so as to be movable along the longitudinal direction of the grouting steel pipe A movable plate and a telescopic member respectively installed in the space between the stationary plate and the movable plate so that the inside of the grouting steel pipe is partitioned by being pressed when the movable plate is moved to the stationary plate side and the inner surface and the side surface of the grouting steel pipe are in close contact And, to fix the fixing plate in the hollow of the grouting steel pipe, the inner surface of the grouting steel pipe is press-compressed so that the side of the grouting steel pipe is bent and protrudes inward, so that one side of the fixing plate is in contact and fixed The fixing protrusion or the fixing plate is made of any one of fixing nipples fixedly formed so as to contact one side of the fixing plate at a plurality of points on the inner surface of the grouting steel pipe so as to fix the fixing plate to the inside of the grouting steel pipe, and the rear end of the injection hole A caulking packer that is installed outside and is formed to close the gap between the grouting steel pipe and the drilling hole when the caulking liquid is injected, and at the inner end of the drilling hole to fix the grouting steel pipe at the inner end of the drilling hole when the grouting steel pipe is inserted. The formed steel pipe fixing member and the upper An end cover installed to cover the rear end opening of the grouting steel pipe, at least one spacer installed along the outside of the grouting steel pipe and formed to support the grouting steel pipe in a perforation hole, and the other side to one end of the grouting steel pipe on one side One side of the center injection pipe to connect a connection socket formed by screwing on one end of the grouting steel pipe on one side and one end of the grouting steel pipe on the other side for connection with the grouting steel pipe of It is characterized in that it consists of a connection fitting formed of.

In another embodiment, the co-injection steel pipe further comprises a multi-joint fixing means for fixing the grouting steel pipe to the inside of the perforation hole by a roller to be inserted into compression, and the multi-joint fixing means is grouted to the center A close contact plate inserted into one end of the steel pipe and formed to be in close contact with the ground around the perforation hole, a plurality of fixed hinges formed on one side of the close contact plate so that the rotating bar is rotatable when fixed with the close contact plate, and one side is coupled to the fixed hinge The rotating bar is formed to be rotatable, and the multi-joint bar is coupled to the other side by the multi-joint hinge, and the rotating bar is coupled to the one side by the multi-joint hinge, and the contact case is inserted into the space between the inner surface of the perforated hole and the grouting steel pipe. A plurality of multi-joint bars formed to be mutually coupled by a plurality of multi-joint hinges to be able to be, and a multi-joint hinge formed to be coupled to be mutually rotatable between the plurality of multi-joint bars so that the plurality of multi-joint bars can be rotated; , The case insertion hole is formed through one side of the adhesion plate so that the adhesion case is inserted and inserted into the space between the inner surface of the perforated hole and the grouting steel pipe, and the grouting steel pipe is inserted and formed through the center of the adhesion plate so that it can be fixed with the adhesion plate. A steel pipe insertion hole to be used, a close contact case formed by coupling to one side of any one of a plurality of multi-joint bars so that it can be inserted into the space between the grouting steel pipe and the inner surface of the perforated hole, and a cushioning spring is formed inside the close contact case A spring buffer groove that becomes a buffering groove, a buffer spring that is built into the spring buffer groove so that the perforated side support and the steel pipe side support can be buffered, and is formed so as to be buffered from the upper side of the close contact case, and one side is inserted into the spring buffer groove , A perforated side support on which a perforated roller is formed on the other side, a perforated side roller formed on one side of the perforated side support to be rotated in close contact with the inner surface of the perforated hole, and to be formed so as to be buffered in the lower direction of the contact case, one side A steel pipe side support inserted into the spring buffer groove and formed with a steel pipe side roller on the other side, and a steel pipe side support formed on one side so that it can be rotated in close contact with the grouting steel pipe. It is characterized in that it consists of a steel pipe-side roller formed.

As described above, by allowing the position of the nailing member provided at the front end of the co-injected steel pipe to be moved according to the penetration depth of the steel pipe, the convenience of construction and the degree of freedom in design are improved, and the nailing member can be attached and detached at the same time. This provides the effect of enabling the recycling of the nailing member.

In addition, the interior of the steel pipe is accurately partitioned into a plurality of spaces so that the sealing force is maintained in each space, so that the grouting can be properly performed for each partition.

In addition, by injecting the grouting solution into the divided steel pipe so that the pressure at which the grouting solution is injected uniformly acts during grouting construction, it has the effect of allowing the simultaneous injection of the steel pipe to be accurately constructed.

In addition, since the steel pipe body can be separated and assembled, it has the effect of improving workability and construction speed even at a construction site in a narrow space.

1 is a view showing the structure of a conventional simultaneous injection steel pipe.
Figure 2a, 2b, 2c is a view of the present invention co-injected steel pipe.
Figure 3 is a connection state diagram for the present invention simultaneous injection steel pipe.
4 is a view showing the nailing means of the present invention co-injected steel pipe.
5 is a view showing a steel pipe fixing means that is another embodiment of the present invention co-injected steel pipe.
FIG. 6 is a detailed view of FIG. 5 .
7 is a view showing a multi-joint fixing means, which is another embodiment for the simultaneous injection steel pipe of the present invention.
FIG. 8 is a detailed view of FIG. 7 .
9 is a view showing a rolling guide means according to another embodiment of the present invention co-injected steel pipe.
FIG. 10 is a detailed view of FIG. 9 .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0016] Reference is made to the accompanying drawings, which show by way of illustration specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail 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 characteristics described herein with respect to one embodiment may be implemented in other embodiments without departing from the spirit and scope of the invention. In addition, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the detailed description set forth below is not intended to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all scope equivalents to those claimed. Like reference numerals in the drawings refer to the same or similar functions throughout the various aspects.

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

1 is a view showing the structure of a conventional simultaneous injection steel pipe 500, Figures 2a, 2b, 2c is a view of the present invention simultaneous injection steel pipe, Figure 3 is a connection state diagram for the present invention simultaneous injection steel pipe, 4 is a view showing the nailing means 520 of the present invention co-injected steel pipe 500.

As shown in the drawing, the co-injected steel pipe 500 is characterized in that it is provided with a nailing member 521 to reinforce the ground by penetrating into the ground to perform grouting.

The simultaneous injection steel pipe 500 is a grouting steel pipe 510, a grouting hole 511, a main shaft bolt 513, a main injection pipe 512, a caulking packer 550, a steel pipe fixing member 560, an end cover ( 570 ), a spacer 580 , a connection socket 590 , and a connection fitting 591 .

The grouting steel pipe 510 is formed in a tubular shape to be inserted and installed in the ground.

The grouting hole 511 is formed so that the grouting liquid injected into the grouting steel pipe 510 is injected between the perforated hole and the outer surface of the grouting steel pipe 510, and the grouting hole 511 is on the outer surface of the grouting steel pipe 510. It is characterized in that it is formed in plurality.

The main shaft bolt 513 is installed to pass through the partition means 540 inside the grouting steel pipe 510 and is coupled to the moving plate 542 to press the moving plate 542 into the grouting steel pipe 510. characterized by being

The main shaft bolt is a pulling type in the drawing of the present invention, and consists of a fixing protrusion, a fixing plate elastic member and a movable plate from the left, and in the case of a pushing type, a movable plate, a stretching member, a fixing plate, and a fixing projection from the left in the order of .

The main injection pipe 512 is installed to pass through the partition means 540 inside the grouting steel pipe 510 so that the grouting liquid is injected into the partitioned internal space, and the main injection pipe 512 is the grouting steel pipe ( 510) is characterized in that a plurality are formed inside.

The simultaneous injection steel pipe 500 includes a nailing means 520 , a partitioning means 540 , and a pressing means 560 .

The nailing means 520 can be moved from one side of the outer surface of the grouting steel pipe 510 and is detachably provided to support the grouting steel pipe 510 penetrating into the ground.

The nailing means 520 includes a nailing member 521 , a member fixing plate 522 , and a member fixing nut 523 .

The nailing member 521 is made of a tubular thread formed on the outer surface, characterized in that it is inserted into the outer surface of the grouting steel pipe (510).

The member fixing plate 522 is screwed to the outer surface of the nailing member 521 so that the tube surface is in contact with the outer surface of the ground to support the grouting steel pipe 510 .

The member fixing nut 523 is to prevent the flow of the member fixing plate 522, and the member fixing nut 523 is screwed to the outer surface of the nailing member 521, so that one side is the member fixing plate 522 ) is characterized in that it is formed to pressurize.

The partition means 540 is installed to be spaced apart at regular intervals along the longitudinal direction inside the grouting steel pipe 510 to partition the inner space into a plurality of points.

The partition means 540 includes a fixing plate 541 , a movable plate 542 , a telescopic member 543 , a fixing nipple 544 , and a fixing protrusion 545 .

The fixing plate 541 is installed and formed to be fixed in the radial direction of the grouting steel pipe 510 inside the grouting steel pipe 510 at a location spaced apart from each other by a predetermined interval along the longitudinal direction of the grouting steel pipe 510.

The movable plate 542 is disposed along the radial direction of the grouting steel pipe 510 inside the grouting steel pipe 510 at a position spaced apart from the fixed plate 541 by a predetermined interval, and along the longitudinal direction of the grouting steel pipe 510. It is characterized in that it is movably fixed to the outer surface of the main injection pipe (512).

The moving plate is moved by rotating the main shaft bolt and pulled, and in the present invention, it is a pulling type and consists of a fixed protrusion or a fixed nipple, a fixed plate, a telescopic member, and a moving plate inside the grouting steel pipe in the order of, and in the case of a pushing type, grouting It consists of a moving plate, an elastic member, a fixed plate, a fixed protrusion or a fixed nipple in the inside of the steel pipe.

The telescoping member 543 is installed in the space between the fixed plate 541 and the moving plate 542, respectively, and is pressed when the moving plate 542 is moved toward the fixed plate 541 to the grouting steel pipe 510. It is characterized in that it is formed so that the inside of the grouting steel pipe 510 is partitioned by being in close contact with the inner surface and the side surface of the.

The fixing nipple 544 is such that one side of the fixing plate 541 is in contact at a plurality of points on the inner surface of the grouting steel pipe 510 so as to fix the fixing plate 541 to the inside of the grouting steel pipe 510 . It is characterized in that it is fixedly formed.

The fixing protrusion 545 is press-compressed so that the side of the grouting steel pipe 510 is bent on the inner surface of the grouting steel pipe 510 so that the fixing plate 541 can be fixed in the hollow of the grouting steel pipe 510. It is characterized in that it is formed so that one side of the fixing plate 541 is contacted and fixed by protruding inward.

The caulking packer 550 is installed outside the rear end of the grouting hole 511, and the coating packer is formed to seal the gap between the grouting steel pipe 510 and the drilling hole when the caulking liquid is injected. do.

The caulking packer 550 is characterized in that it is applied or not applied depending on the construction situation.

The steel pipe fixing member 560 is formed to fix the grouting steel pipe at the inner end of the perforated hole when the grouting steel pipe is inserted. It is characterized in that it prevents 5°~15° from flowing upward, and prevents the phenomenon of being pushed back from the drilling hole due to pressure during grouting.

The steel pipe fixing member may be applied or not applied depending on the construction site and construction method.

The end cover 570 is installed to cover the rear end opening of the grouting steel pipe 510 .

At least one spacer 580 is installed along the outside of the grouting steel pipe 510 to support the grouting steel pipe 510 in the perforated hole.

The connection socket 590 is formed to interconnect the grouting steel pipe formed on one side and the grouting steel pipe formed on the other side. It is characterized in that a part is coupled to the thread formed by the outer periphery of one end of the grouting steel pipe of the other side.

The connection fitting 591 is characterized in that it is formed to connect any one of the main injection pipes formed inside when the grouting steel pipe is connected.

The drawings and their descriptions in the present invention are intended to show the construction state for explaining the present invention, and the constituent conditions and forms may be changed within the scope of the present invention according to the working environment or working conditions of the site.

5 is a view showing a steel pipe fixing means 600 that is another embodiment for the simultaneous injection steel pipe 500 of the present invention, and FIG. 6 is a detailed view of FIG. 5 .

As shown in the drawing, the steel pipe fixing means 600 is configured to be further included in the simultaneous injection steel pipe 500, and the steel pipe fixing means 600 is a grouting steel pipe for fixing the inner surface of the perforated hole of the grouting steel pipe 510. (510) It is characterized in that it is formed in plurality so as to be detachable from the outer surface.

The steel pipe fixing means 600 includes a fixed dividing member 610, a spacing protrusion 611, a protrusion groove 612, a steel pipe insertion hole 613, a close contact tube 614, an air injection nozzle 615, an air injection pipe. 616 , a pressure sensor 618 , and a capsule binder 619 .

The fixed dividing member 610 is inserted into the outer surface of the grouting steel pipe 510, and is divided into a plurality of pieces so as to be adjustable according to the outer diameter of the grouting steel pipe 510 when inserted into the grouting steel pipe 510.

The spacer protrusion 611 is inserted into the protrusion groove 612 so as to be adjusted to flow according to the diameter of the grouting steel pipe 510, and the spacer protrusion 611 is formed on one side of the fixed dividing member 610. characterized by being

The protrusion groove 612 is formed so that the spacing protrusion 611 is inserted to be adjusted to fit the diameter of the grouting steel pipe 510, and the protrusion groove 612 is formed on the other side of the fixed dividing member 610. characterized.

The steel pipe insertion hole 613 is formed to be inserted into the outer surface of the grouting steel pipe 510 , and the steel pipe insertion groove is formed in the center of the fixed dividing member 610 .

The close contact tube 614 is formed to fill the space between the fixed dividing member 610 and the perforated hole when inserted into the perforated hole and closely adhere to it. characterized in that it is formed.

The air injection nozzle 615 is formed so that the upper injection tube and the lower injection tube for injecting air to the adhesion tube 614 side can be detachably attached, and the air injection nozzle 615 is each adhesion tube 614. It is characterized in that it is formed on one side.

The air injection tube 616 is characterized in that it is formed as a tube having flexibility to inject air to the adhesion tube 614 side to be detachably attached to the injection nozzle.

The pressure sensor 618 is formed to sense the pressure applied when the contact tube 614 expanded by air injected into the contact tube 614 comes into contact with the perforation hole, and the pressure sensor 618 is each It is characterized in that it is formed on one side of the fixed dividing member 610 of the.

The capsule binder 619 is formed on the outer surface of the adhesion tube 614 so that the outer surface of the adhesion tube 614 and the inner surface of the perforation hole are adhered when the adhesion tube 614 is expanded. It is characterized in that it is formed to flow out between the 614 and the inner surface of the perforation hole.

7 is a view showing a rolling guide means 800 which is another embodiment for the simultaneous injection steel pipe 500 of the present invention, and FIG. 8 is a detailed view of FIG. 7 .

As shown in the drawing, the rolling guide means 800 is configured to further include a grouting steel pipe, and the rolling guide means 800 is a grouting steel pipe 510 that is inserted into the perforated hole is positioned with respect to the center and inserted. It is characterized in that it is coupled to the grouting steel pipe 510 so that it can be formed.

The rolling guide means 800 includes a tube insertion member 810, a tube support protrusion 811, a first tube fixing pad 812, a second tube fixing pad 813, a guide support tube 814, a tension spring ( 815 ), a guide bar 816 , an entry buffer bar 817 , an entry buffer hinge 818 , and an insertion roller 819 .

The pipe insertion member 810 is formed to be inserted into the outer circumferential surface of the grouting steel pipe 510, and the pipe insertion member 810 is characterized in that a circular pipe is formed.

The tube support protrusion 811 is formed to be in close contact with the outer peripheral surface of the grouting steel pipe 510 so that the tube insertion member 810 and the insertion tube body have the same original center, and the tube support projection 811 is the tube It is characterized in that a plurality of insertion members 810 are formed on the inner surface.

The first pipe fixing pad 812 is formed to support the pipe insertion member 810 so that the pipe insertion member 810 into which the grouting steel pipe 510 is inserted is not pushed in one direction, and the first pipe fixing pad 812 ) is characterized in that it is formed so as to be inserted into the grouting steel pipe 510 at the corresponding position before the pipe insertion member 810 is inserted.

The second pipe fixing pad 813 is inserted into the grouting steel pipe 510 after inserting the pipe inserting member 810 to fix it so as not to fall out in the insertion direction of the pipe inserting member 810 inserted into the grouting steel pipe 510. It is characterized in that the side surface is brought into contact with the pipe insertion member (810), and the inner surface is formed to be in close contact with the grouting steel pipe (510).

The guide support tube 814 is formed so that the tension spring 815 can be embedded therein, and the guide support tube 814 is characterized in that a plurality of the guide support tubes 814 are formed around the outer circumference of the tube insertion member 810 .

The tension spring 815 is built in the guide support tube 814, characterized in that it is formed so that the guide bar 816 can act as a buffer.

The guide bar 816 is formed such that one side is inserted into the guide support pipe 814 to be in contact with the tension spring 815, and the other side is formed to be coupled to the entry buffer bar 817 through a Jinjin buffer hinge. do it with

The entry buffer bar 817 is formed to support the insertion roller 819, and one side is connected to the guide bar 816 by an entry buffer hinge 818.

The entry buffer hinge 818 is formed to prevent damage to the insertion roller 819 by bending the entry buffer bar 817 at a certain angle when the grouting steel pipe 510 is inserted into the perforation hole, and the entry buffer The hinge 818 is characterized in that it is formed for coupling between the entry buffer bar 817 and the guide bar 816 .

When the grouting steel pipe 510 is inserted into the perforation hole, the insertion roller 819 is inserted into the hole inserting member 810 without contacting the inner surface of the perforation hole as the grouting steel pipe 510 is inserted along the inner center of the perforation hole. It is formed so that the insertion roller 819 is characterized in that it is formed on one side of the entry buffer bar (817).

9 is a view showing a multi-joint fixing means 700 that is another embodiment for the simultaneous injection steel pipe 500 of the present invention, and FIG. 10 is a detailed view of FIG. 9 .

As shown in the figure, the multi-joint fixing means 700 is configured to be further included in the simultaneous injection steel pipe 500, and the multi-joint fixing means 700 is a grouting steel pipe 510 by a roller that is inserted into compression. It is characterized in that it is fixed inside the perforated hole.

The multi-joint fixing means 700 includes a close contact plate 710, a fixed hinge 711, a rotating bar 723, a multi-joint bar 712, a multi-joint hinge 713, a case insertion hole 714, and a steel pipe coupling. Hole 715, close contact case 716, spring buffer groove 717, buffer spring 718, perforated side support 719, perforated side roller 720, steel pipe side support 721, steel pipe side roller 722 ) is made of

The adhesion plate 710 is inserted into one end of the grouting steel pipe 510 in the center, and is formed so as to be in close contact with the ground around the perforation hole.

The fixed hinge 711 is formed so as to be rotatable when the rotating bar 723 is fixed to the close contact plate 710, and the fixed hinge 711 is formed in a plurality on one side of the close contact plate 710 do it with

The rotating bar 723 is characterized in that one side is coupled to the fixed hinge 711 to be rotatable, and to the other side, the multi-joint bar 712 is formed to be coupled by the multi-joint hinge 713 .

The multi-joint bar 712 is coupled to one side of the rotating bar 723 by a multi-joint hinge 713, and is formed so that the contact case 716 can be inserted into the space between the inner surface of the perforated hole and the grouting steel pipe 510. As to be, the multi-joint bar 712 is characterized in that a plurality of joints are formed so as to be coupled to each other by a plurality of multi-joint hinges (713).

The multi-joint hinge 713 is formed so that a plurality of multi-joint bars 712 can be rotated, and the multi-joint hinge 713 is coupled to be mutually rotatable between the plurality of multi-joint bars 712 . characterized in that it is formed.

The case insertion hole 714 is formed so that the contact case 716 can be inserted into the space between the inner surface of the perforated hole and the grouting steel pipe 510, and the case insertion hole 714 is the contact plate 710. It is characterized in that it is formed through one side.

The steel pipe coupling hole 715 is formed so that the grouting steel pipe 510 can be inserted and fixed to the close contact plate 710, and the steel pipe coupling hole 715 is formed through the center of the close contact plate 710. do it with

The close contact case 716 is formed to be inserted into the space between the grouting steel pipe 510 and the inner surface of the perforation hole, and the close contact case 716 is coupled to one side of any one of the plurality of articulated bars 712 . characterized in that it is formed.

The spring buffer groove 717 is formed so that the buffer spring 718 can be built-in, and the spring buffer groove 717 is formed inside the close contact case 716 .

The buffer spring 718 is built into the spring buffer groove 717 so that the perforated side support 719 and the steel pipe side support 721 can be buffered.

The perforated side support 719 is formed so as to be buffered in the upper direction of the close contact case 716, one side is inserted into the spring buffer groove 717, and the perforated side roller 720 is formed at the other side.

The perforation-side roller 720 is formed on one side of the perforation-side support 719 to be in close contact with the inner surface of the perforation hole so that it can be rotated.

The steel pipe side support 721 is formed so as to be buffered in the lower direction of the close contact case 716, one side is inserted into the spring buffer groove 717, and the steel pipe side roller 722 is formed at the other side.

The steel pipe side roller 722 is formed on one side of the steel pipe side support 721 to be in close contact with the grouting steel pipe 510 to be rotated.

The above-described embodiments are for illustration, and those of ordinary skill in the art to which the above-described embodiments belong can easily transform into other specific forms without changing the technical idea or essential features 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 likewise components described as distributed may also be implemented in a combined form.

The scope to be protected through this specification is indicated by the claims described below rather than the above detailed description, and should be construed to include all changes or modifications derived from the meaning and scope of the claims and their equivalents. .

500: simultaneous injection steel pipe
510: grouting steel pipe 511: grouting hole
512: main injection pipe 513: main shaft bolt
520: nailing means 521: nailing member
522: member fixing plate 523: member fixing nut
540: partition means 541: fixed plate
542: movable plate 543: elastic member
544: fixing nipple 545: fixing projection
550: caulking packer 560: steel pipe fixing member
570: end cover 580: spacer
590: connection socket 591: connection fitting
600: steel pipe fixing means 610: fixed dividing member
611: spacing projection 612: projection groove
613: steel pipe insertion hole 614: tight tube
615: air injection nozzle 616: air injection pipe
618: pressure sensor 619: capsule binder
700: multi-joint fixing means 710: close plate
711: fixed hinge 712: multi-joint bar
713: multi-joint hinge 714: case insertion hole
715: steel pipe coupling hole 716: close contact case
717: spring buffer groove 718: buffer spring
719: perforated side support 720: perforated side roller
721: steel pipe support 722: steel pipe roller
723: rotation bar
800: rolling guide means 810: pipe insertion member
811: tube support projection 812: first tube fixing pad
813: second pipe fixing pad 814: guide support pipe
815: tension spring 816: guide bar
817: entry buffer bar 818: entry buffer hinge
819: insertion roller

Claims (3)

In the caulking packer simultaneous injection steel pipe that can reinforce the ground by penetrating into the ground and performing grouting,
The co-injection steel pipe,
A grouting steel pipe formed in a tubular shape to be inserted and installed in the ground,
A plurality of grouting holes formed on the outer surface of the grouting steel pipe so that the grouting liquid injected into the grouting steel pipe is injected between the perforated hole and the outer surface of the grouting steel pipe;
a main shaft bolt installed to pass through the partition means inside the grouting steel pipe and formed inside the grouting steel pipe to be coupled to the moving plate and press the moving plate;
It consists of a plurality of main injection pipes formed to inject the grouting liquid into the compartment space inside the grouting steel pipe,
The co-injection steel pipe,
a nailing means capable of positional movement on one side of the outer surface of the grouting steel pipe and being detachably provided to support the grouting steel pipe penetrating into the ground; and
It is installed at regular intervals in the longitudinal direction inside the grouting steel pipe and consists of a partition means for partitioning the inner space into a plurality of points,
The nailing means,
A nailing member made of a tubular thread formed on the outer surface and inserted into the outer surface of the grouting steel pipe;
a member fixing plate which is screwed to the outer surface of the nailing member so that the tube surface is in contact with the outer surface of the ground to support the grouting steel pipe;
It consists of a member fixing nut which is screwed to the outer surface of the nailing member to prevent the member fixing plate from flowing and one side is formed to press the member fixing plate,
The partition means,
A fixing plate installed and formed so as to be fixed by a fixing nipple or a fixing protrusion along the diameter direction of the grouting steel pipe inside the grouting steel pipe at a position spaced apart in the longitudinal direction of the grouting steel pipe;
A movable plate disposed along the radial direction of the grouting steel pipe inside the grouting steel pipe at a position spaced apart from the fixed plate and fixed to the outer surface of the main injection pipe so as to be movable along the longitudinal direction of the grouting steel pipe;
A telescopic member which is respectively installed in the space between the fixed plate and the moving plate and is pressed when the moving plate is moved toward the fixed plate so that the inner surface and the side surface of the grouting steel pipe are in close contact so that the inside of the grouting steel pipe is partitioned;
In order to fix the fixing plate in the hollow of the grouting steel pipe, the inner surface of the grouting steel pipe is press-compressed so that the side of the grouting steel pipe is bent and protrudes inward, so that one side of the fixing plate is in contact and fixed. or
It consists of any one of the fixing nipples fixedly formed so that one side of the fixing plate is in contact at a plurality of points on the inner surface of the grouting steel pipe so as to fix the fixing plate to the inside of the grouting steel pipe,
A caulking packer installed outside the rear end of the grouting steel pipe and formed to seal the gap between the grouting steel pipe and the drilling hole when caulking liquid is injected;
A steel pipe fixing member formed on the inner end face of the drilling hole to fix the grouting steel tube at the inner end of the drilling hole when the grouting steel pipe is inserted;
an end cover installed to cover the rear end opening of the grouting steel pipe;
At least one spacer installed along the outside of the grouting steel pipe to support the grouting steel pipe in a perforated hole;
A connection socket formed by screwing to one end of the grouting steel pipe on one side and one end of the grouting steel pipe on the other side for connection with the grouting steel pipe on the other side as one end of the grouting steel pipe on one side;
It consists of a connection fitting formed on one side of the center injection pipe to connect the center injection pipe formed inside when the grouting steel pipe is connected,

The co-injection steel pipe,
It further includes a multi-joint fixing means for fixing the grouting steel pipe to the inside of the perforated hole by the compressed roller,
The multi-joint fixing means,
An adhesion plate inserted into one end of the grouting steel pipe in the center and formed to be in close contact with the ground around the perforation hole,
A plurality of fixed hinges formed on one side of the close contact plate so as to be rotatable when the rotating bar is fixed with the close contact plate,
A rotating bar having one side coupled to a fixed hinge and formed to be rotatable, and a multi-joint bar formed to be coupled by a multi-joint hinge to the other side;
A plurality of multi-joint bars coupled to one side of the rotating bar by a multi-joint hinge, and formed to be mutually coupled by a plurality of multi-joint hinges so that the contact case can be inserted into the space between the inner surface of the perforated hole and the grouting steel pipe;
A multi-joint hinge formed to be coupled so that the plurality of articulated bars can be rotated with each other so that the plurality of articulated bars can be rotated;
A case insertion hole formed through one side of the adhesion plate so that the adhesion case can be inserted and inserted into the space between the inner surface of the perforated hole and the grouting steel pipe;
A steel pipe insertion hole formed through the center of the close contact plate so that the grouting steel pipe can be inserted and fixed to the close contact plate;
A close contact case formed by coupling to one side of any one of the plurality of multi-joint bars so as to be inserted into the space between the grouting steel pipe and the inner surface of the perforation hole;
A spring buffer groove formed inside the close contact case so that the buffer spring can be embedded;
A buffer spring that is built into the spring buffer groove so that the drilled side support and the steel pipe side support can be buffered;
A perforated side support that is formed so as to be buffered in the upper direction of the close contact case, one side is inserted into the spring buffer groove, and a perforated side roller is formed at the other side;
A perforation-side roller which is formed on one side of the perforated side support and is formed to be rotated in close contact with the inner surface of the perforation hole;
A steel pipe side support that is formed so as to be buffered in the lower direction of the close contact case, one side is inserted into the spring buffer groove, and the steel pipe side roller is formed at the other side;
A caulking packer simultaneous injection steel pipe, characterized in that it comprises a steel pipe side roller formed on one side of the steel pipe side support so that it can be rotated in close contact with the grouting steel pipe.
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