WO2011027931A1

WO2011027931A1 - Removable ground anchor structure

Info

Publication number: WO2011027931A1
Application number: PCT/KR2009/005513
Authority: WO
Inventors: 김성규
Original assignee: Kim Sung-Kyu
Priority date: 2009-09-05
Filing date: 2009-09-26
Publication date: 2011-03-10

Abstract

The present invention relates to a removable ground anchor structure. More particularly, assembly and disassembly of the removable ground anchor structure is easy. In addition, construction is carried out safely and the removal or re-coupling of a strand is very simple since a coil spring in the anchor is stably mounted not to shake in delivery or transfer.

Description

Removable Ground Anchor Structure

The present invention relates to a removable ground anchor structure, and more particularly, it is easy and very easy to remove and reinstall by rotating and separating the combined strand of the wedge guide, and the coil spring inside the anchor is fixed to the rotating plate. It is to maintain a solid construction without shaking during transportation and movement to ensure a safe construction.

In general, the ground anchor is formed by drilling an anchor hole in the ground and inserting a tensile material (strand wire) having excellent tensile strength into the anchor hole together with an internal fixing agent and a load bearing body, and then injecting it into a grouting material such as concrete to fix it firmly. Next, by applying a load to the free end of the tension member and fixing it with an external fixing agent to secure a strong fixing force to secure structures such as earth walls, and to prevent the collapse of the surrounding ground during excavation work for underground structures in construction and civil engineering works. It is widely used for earthquake construction and construction to control the loss of soil on the soft ground incision surface.

The tensile material used for the ground anchor uses a strand made of twisted steel strands, which is stronger than ordinary reinforcing bars, and becomes a ground obstacle when left in the ground. There is a risk of causing problems. In order to solve this problem, there has been known an internal fixing agent for a removable ground anchor that easily removes a tension member buried in the ground after construction work.

However, the conventional internal fixing agent for removable ground anchors, when the anchors manufactured in the factory are transported to the construction site or during the construction work, in particular, when the drilling work and the installation of the band is applied to the internal fixing body of the anchor, the strand is dismantled. Problems such as inability to remove the tension or the tension material can not be easily removed.

In addition, there is a problem that occurs before the tension, that is, when the tensile material is short or the tensile material is incorrectly coupled, there is a problem that takes a lot of time and additional costs due to the re-punching operation, etc. because there is no way to remove the tensile material and recombine again.

The present invention was developed to solve various problems as described above, the object of which can be easily and easily removed and recombined the stranded wire from the anchor after completion of the structure, the coil is mounted inside the anchor which is a safety device dismantling safety before construction The spring is secured to the rotating plate to provide a removable ground anchor structure to ensure perfect construction.

In order to achieve the above object, the present invention is formed to pass through the coupling hole having a screw thread on the upper and lower inner peripheral surface and is fastened by the lower coupling hole of the upper case and the upper case having a fastening groove to which the elastic spring is fastened to the upper inner peripheral surface and the upper outer peripheral surface. A case consisting of a lower case having a coupling protrusion having a screw thread therein and having a wedge insertion hole formed therein and an insertion hole for inserting a stranded wire at the bottom thereof, and inserted into a wedge insertion hole of the lower case and made of three pieces and elastic on the outer surface. The ring is fastened to the wedge and the upper surface of the wedge is coupled to the upper outer peripheral surface of the V-shaped or U-shaped cut to form an incision surface having an asymmetrical structure similar to the coil spring helix angle while having a fixed groove on the upper surface Forming a rotating plate to smoothly move the coil spring spiral When the wedge guide is formed with a locking jaw engaging the wedge is coupled to the lower side of the rotating plate, and is inserted into the fastening groove of the upper case, the upper side is wide and the lower side is formed narrow and the bottom is fastened to the fixing groove formed on the rotating plate of the wedge guide Tension material with a coil spring, a lid fastened to the upper coupling hole of the upper case and formed with a threaded coupling protrusion formed on the outer circumferential surface to protrude downward, and an insertion groove formed therein while being inclined on the outer surface and fastened by the insertion hole of the lower case. The cover tube is inserted into a cylindrical sealing cap to prevent the entry of this material into the lower case.

The present invention has various effects as follows.

First, the case is separated up and down, there is an advantage that the assembly and disassembly operation is very easy.

Second, the wedge guide of the rotating plate to make a fan-shaped to widen the area that the coil spring can be located there is an effect to prevent the deviation of the strands that can occur during transportation and construction.

Thirdly, the asymmetrical structure similar to the coil spring helix angle is made by making the two-sided warp of the fan-shaped rotor plate to make the rotor plate move smoothly inside the coil spring helix during removal and recombination work. There is this.

Fourth, by installing a sealing cap between the lower case bottom and the tension member cladding pipe to prevent foreign substances such as water and grout liquid into the lower case during construction, there is an effect that the tension and jagger is completely made.

1 is an exploded perspective view showing the overall configuration of the present invention

2 is a cross-sectional view of FIG.

Figure 3 is a cross-sectional view showing the configuration of the wedge guide of the present invention

4 to 6 is a sectional view and a perspective view showing the configuration of the sealing cap of the present invention

7 to 10 is a perspective view and a cross-sectional view showing the configuration of another sealing cap of the present invention

11 to 15 is a reference diagram showing the operating state of the present invention

100: body 10: upper case

11, 12, 21, 71: screw thread 13, 14: bonding hole

15: Tightening groove 20: Lower case

22,72: engaging protrusion 23: insertion hole

30: Case 40: wet

41: elastic ring 50: wet guide

51: incision surface 52: rotating plate

53: locking jaw 60: coil spring

70: lid 80, 90: sealing cap

91: Slope 92,97: Mount screw

93: tube insertion hole 94, 96: O-ring

95: fastening groove 93,97: O-ring

98: Hollow 99: Secondary sheath

Hereinafter, described in detail with reference to the accompanying drawings a preferred embodiment of the present invention.

1 is a perspective view showing the overall configuration of the present invention, Figure 2 is a cross-sectional view of Figure 1, Figure 3 is a cross-sectional view showing the configuration of the wedge guide of the present invention, Figures 4 to 6 is the configuration of the sealing cap of the present invention 7 and 10 are a perspective view and a cross-sectional view showing the configuration of another sealing cap of the present invention, Figures 11 to 14 is a reference diagram showing an operating state of the present invention.

In the drawing, reference numeral 100 denotes the main body of the removable ground anchor according to the present invention.

The main body 100 has a wedge 40 having a wedge guide 50 installed therein and inserted into a case 30 formed of an upper case 10 and a lower case 20, and a coil spring on an upper surface of the wedge guide 50. After the 60 is coupled to abut, the lid 70 is configured to be fastened to the upper side of the upper case 10.

The case 30 is composed of the upper case 10 and the lower case 20 to be separated and easily coupled and separated, the upper case 10 is a coupling hole having a thread (11, 12) on the upper and lower inner peripheral surface (13) (14) is formed to penetrate and the fastening groove 15 is inserted into the upper end of the coil spring 60 which will be described later on the upper inner peripheral surface.

The fastening groove 15 is formed to be the same as the thickness of the coil spring 60 so that the lid 70 is maintained by pressing the coil spring 60 into which the lid 70 is inserted without rotating or leaving the outside.

The lower case 20 has a wedge insertion hole 23 having an inclined surface into which the wedge 40 is inserted while the coupling protrusion 22 having the thread 21 on the upper outer circumferential surface is upwardly formed and formed at the lower end thereof. An insertion hole 24 into which a known strand 1 is inserted is formed.

The screw thread 21 formed on the upper coupling protrusion 22 of the lower case 20 is screwed into the screw thread 12 formed in the lower coupling hole 14 of the upper case 10.

This, the assembly and disassembly of the upper case 10 and the lower case 20 serves to make easy and simple.

The wedge 40 is made of three pieces, and the insertion groove 42 for fastening the elastic ring 41 to the upper outer peripheral surface is formed, and the inner thread 43 is formed on the inner surface to hold the strand (1).

And the wedge guide 50, which will be described later on the upper inner circumferential surface of the U-shaped coupling groove 44 is formed.

As shown in FIG. 3, the wedge guide 50 has a cutting surface 51 formed by cutting one side of the upper outer circumferential surface in a V-shape, and a fixing groove 52 to which the lower end of the coil spring 60 is fastened. When the fan-shaped rotating plate 53 is formed, the left and right inclinations of the rotating plate 53 are similar to the inclinations of the coil spring 60, and the locking jaw 54 in which the wedge 40 is coupled to the lower side is formed. .

And when the wedge guide 50 is excessively up the coil spring 60 by placing the support jaw 55 on the upper outer circumferential surface of the locking jaw 54, the end of the coil spring 60 presses the wedge 40 to wedge guide. The 50 and the wedge 40 are not separated, and an insertion groove 56 into which the strand 1 is inserted is formed therein.

Forming a locking projection (56a) that can be inserted into the groove between the outer line (1 outer line) in the insertion groove 56 to compress the outer surface of the inserted strand (1) to prevent the phenomenon of going back and the stranded wire (1) And the wedge guide 50 is engaged with each other and serves to rotate.

The fixing groove 52 is formed in a U-shaped fan shape on one of the outer circumferential surface of the rotating plate 53, and before the removal operation, the lower end of the coil spring 60 is fastened to the fixing groove 52 so The coil spring 60 serves to prevent the coil spring 60 from being separated from the rotating plate 53 even when the shock and the shaking are performed.

The coil spring 60 has a wide upper side and a narrow lower side, the upper end of which is inserted into the upper case 10 fastening groove 15 and the lower end of the coil spring 60 is fixed to the fixing groove 52 of the rotating plate 53. It is.

The lid 70 is formed so that the engaging projection 72 formed with a screw thread 71 on the outer circumferential surface, the coupling projection 72 is screwed with a screw thread 11 formed on the upper inner peripheral surface of the upper case 10 do.

In addition, the present invention as shown in Figure 4 and 5 attached to the insertion hole 24 of the lower case 20 having an inclined surface 81 on the outer surface is formed with an insertion groove 82 in the center and A cylindrical sealing cap 80 having a hole 83 into which a strand is inserted is used in combination.

The insertion groove 82 serves to lock the foreign material or grout liquid into the anchor body by fastening the cover pipe 2 of the wire strand 1 so that the anchor operates safely.

And as shown in Figure 6 attached to the both sides of the inclined surface 81 and the insertion groove 82 of the sealing cap 80 to form a coupling projection like saw blade 84, the insertion line 82 to the strand ( The cladding tube 2 of 1) is inserted and fastened to prevent the anchor from falling out during movement or installation work.

Another configuration of the sealing cap as described above is as shown in Figure 7 and 8 of the accompanying drawings, the sealing cap 90, the inclined surface 91 is formed below the inner circumferential surface and the thread 92 is formed below the tube insertion hole ( 93 is provided to penetrate.

Under the outer circumferential surface of the sealing cap 90 is formed a fastening groove 95 to which the O-ring 94 is fastened.

The sealing cap 90 is fastened to the insertion hole 24 of the lower case 20, and at this time, the sealing O ring 96 is fastened to an upper surface of the sealing cap 90.

In this state, the cover pipe 2 having the thread 3 formed on the outer circumferential surface is screwed with the thread 92 formed on the inner circumferential surface of the sealing cap 90.

In addition, as shown in FIGS. 9 and 10 of the accompanying drawings, a thread 97 is formed at an upper end of an outer circumference of an inner space of the cladding tube 2 fastened to the sealing cap 90, and a hollow 98 is formed inside. The cladding tube 99 is inserted, and the screw thread 97 of the secondary cladding tube 99 is screwed into a screw thread 23a formed on the lower inner peripheral surface of the wedge insertion hole 23 of the lower case 20.

At this time, the strand (1) is fastened to the inside of the covering pipe 2, the end of the strand (1) is coupled to the anchor body.

Such a sealing cap 90 serves to completely block the foreign matter or grout liquid is inserted into the anchor body.

The present invention as described above, as shown in the accompanying drawings, Figure 11 and 13, first, the sealing

cap

80, 90 to the insertion hole 24 formed in the lower end of the lower case 20 is installed.

Then, the cover tube 2 into which the strand 1 is inserted into the hole 83 or the tube insertion hole 93 formed in the center of the sealing

cap

80 or 90 is inserted.

The strand 1 is formed by twisting one strand of the core wire in the center and six strands of the outer wire on the outer surface thereof, and wrapping the outer surface of the strand 2 with the covering tube 2. The tip is peeled off by a certain length and then used.

As described above, the upper portion of the stranded wire (1) in which the sheath (2) is peeled off passes through the inner space of the wedge (40) and is inserted into the insertion groove (56) of the wedge guide (50), and the sheath (2) has a sealing cap ( At the same time as being coupled to the insertion groove 82 of the 80, the engaging projection 84, such as a saw blade bite so as not to fall out.

In addition, the cover tube 2 is fastened by screwing the screw thread 3 formed on the outer circumferential surface of the cover 92 with the thread 92 formed in the tube insertion hole 93 of the sealing cap 90, and the upper end of the cover tube 2 into the upper part. Insert a secondary covering pipe (99) having a thread (97) formed therein.

At this time, the strand 1 is inserted into the inner hollow 88 of the secondary coating pipe 99, the thread 97 formed on the upper outer peripheral surface of the secondary coating pipe 99 is the wedge insertion hole of the lower case 20 ( 23 is screwed into the thread 23a formed on the lower side.

And the strand (1) is fastened to the inside of the insertion groove 56 of the wedge guide 50 through the wedge 40, the upper end of the strand (1) a plurality of insertion grooves 56 formed in the wedge guide 50 The locking protrusion 56a is pressed against the outer surface of the strand wire 1 to prevent the phenomenon from going back, and the strand wire 1 and the wedge guide 50 are engaged with each other to rotate together.

After inserting the strand 1 as described above, the upper end of the coil spring 60 is coupled to the fastening groove 15 formed in the upper inner peripheral surface of the upper case 10, the lower coupling hole 14 of the upper case 10 Screw the coupling protrusion 22 of the lower case 20).

Then, the lid 70 is fixed by screwing the upper coupling hole 13 of the upper case 10.

The lower end of the coil spring 60 is fastened to the fixing groove 52 formed in the rotating plate 53 of the wedge guide 50 coupled to the upper side of the wedge 40, to move and transport the anchor or anchor When the coil is inserted into the ground to prevent the coil spring 60 is separated from the rotating plate 53 in the external shake.

When the tension line 1 is tensioned as described above, the wedge 40 moves downward by the tension force and is completely inserted into the wedge insertion hole 23 of the lower case 10 and at the same time, the fixing groove of the rotating plate 53. The lower end of the coil spring 60 fastened to 52 is in a relaxed state.

In addition, in the case of the sealing cap 90, the O-ring 96 installed in the upper end of the insertion hole 24 of the lower case 20 is retracted to further close the sealing cap 90, the O-ring 94 is installed on the outer peripheral surface Is in close contact with the inner circumferential surface of the insertion hole 24 of the lower case 20 to securely protect the inside of the anchor body.

In addition, the coil spring 60 is extended to the lower side by the elastic force in the state fixed to the upper case 10, which causes the lower end of the coil spring 60 to be relaxed in the fixing groove 52.

Then, as shown in FIG. 14, when the tension line 1 is rotated in the clockwise direction after removing the tensile force applied to the strand 1, the strand 1 caught by the thread 41 inside the wedge 40. The wedge 40 and the wedge guide 50 are rotated in the same direction by the rotational force of.

At this time, the rotating plate 53 of the wedge guide 50 is rotated to the upper side while rotating along the space between the coil spring 60 and the coil spring 60, the wedge 40 is inserted into the wedge of the lower case 20 The ball 23 is moved upward from the ball 23 and is opened to the bar by the elastic ring 41 fastened to the outer circumferential surface of the wedge 40 by the moving space.

And when pulling the strand (1) to the lower side as shown in Figure 15 attached to the strand (1) is separated from the wedge 40 and at the same time the rotating plate 53 of the wedge guide 50 is coil spring 60 and coil The state inserted in the space between the springs 60 is maintained.

As such, the rotating plate 53 of the wedge guide 50 is hung in the space between the coil spring 60 and the coil spring 60 and only the strand 1 is discharged to the outside.

In the above state, when the strand is short or a problem occurs and the strand is to be replaced or when the strand is removed and retension is required, the strand is inserted into the insertion hole 24 of the lower case 20 when the strand is twisted. The leading end of (1) is inserted into the inner space of the wedge 40 caught in the space between the coil spring 60 and the coil spring 60, and at the same time, the locking projection formed in the insertion groove 56 of the wedge guide 50 ( 56a).

In this state, when the strand wire 1 rotates in the counterclockwise direction, the wedge 40 and the wedge guide 50 rotate simultaneously by the rotational force, and the rotating plate 53 is the coil spring 60 and the coil spring 60. Take the space between and come down.

And the wedge 40 is in a restrained state while the lower case 20 is fastened to the wedge insertion hole 23 again. As described above, the present invention is easy and simple to remove as well as to remove the strand.

Claims

The upper case has a coupling hole formed with a screw thread on the upper and lower inner circumferential surface and has a fastening groove for fastening the elastic spring on the upper inner circumferential surface, and a coupling protrusion having a thread on the upper outer circumferential surface and fastened to the lower coupling hole of the upper case. A case formed of a lower case having a threaded insertion hole formed in the lower inner circumferential surface of the wedge insertion hole and forming a wedge insertion hole having a thread in a lower side thereof;

A wedge inserted into a wedge insertion hole of the lower case and made of three pieces and having an elastic ring fastened to an outer surface thereof;

Coupling spiral is formed by cutting the one side of the upper outer peripheral surface in the form of V-shaped or U-shaped while being coupled to the upper side of the wedge and forming a cutting surface having a fixed groove on the upper surface and forming a rotating plate having an asymmetric structure similar to the coil spring spiral angle. A wedge guide having a latching jaw to which the wedge is coupled to the lower side of the rotating plate while allowing the inside to move smoothly;

A coil spring inserted into and fastened to the fastening groove of the upper case, the upper side of which is wider and the lower side of the upper side narrowed, and the lower end of which is fastened to the fixing groove formed on the rotating plate of the wedge guide;

A lid fastened to an upper coupling hole of the upper case and having a coupling protrusion formed with a screw thread on an outer circumferential surface thereof to protrude downward;

The cylindrical sealing cap is fastened by the insertion hole of the lower case and having the inclined surface on the outer surface is inserted into the groove groove tube inserted into the insertion groove to prevent foreign substances, etc. into the lower case; Ground anchor structure.
The method of claim 1,

Removable ground anchor structure characterized in that it comprises a coupling protrusion formed on both the outer surface of the inclined surface and the insertion groove of the sealing cap.
The method of claim 1,

The sealing cap, the inclined surface is formed below the inner circumferential surface is provided with a tube insertion hole formed with a screw thread on the lower side of the inclined surface and the outer peripheral surface is formed with a fastening groove for fastening the O-ring, characterized in that the sealing includes an O-ring for the upper side Removable ground anchor structure.
The method of claim 3,

Removable ground anchor structure, characterized in that the insertion is inserted into the tube insertion hole of the sealing cap is screwed into the upper end of the wedge insertion hole of the lower case, the thread is formed on the outer circumferential top and the secondary sheathing pipe having a hollow inside is installed. .