KR20040042975A - Removable Ground Anchor - Google Patents

Abstract

PURPOSE: A removal type ground anchor is provided to dismantle and remove a tension member and an anchor used to construct a diaphragm wall easily. CONSTITUTION: The removal type ground anchor comprises: the tension member covered with covering materials; a head cylinder(90); a wedge cone(80) binding up tension members; a stop ring spring(70) fitted to cover up the wedge cone(80); a spring(60); a cap(30); a ring-shaped bushing(50); a disk(40) composed of a center plate(41), an outer plate and a wing; a head cap(20); a hollow taper ring-shaped sealer ring(100); a hollow bolt-shaped sealing bolt(105); an anchorage head provided with a through hole to house many head cylinders(90) and tension members, a head cylinder placer and a head cylinder binder, and an anchorage fastener; and a hollow pipe-shaped anchorage.

Description

Removable Ground Anchor

The present invention relates to a decomposable temporary foundation anchor body and tension member dismantling method which can be easily dismantled and removed the anchor used in the construction of underground continuous wall in construction or civil engineering construction.

Permanent ground anchors are anchors that are installed to prevent movement or distortion of the construction when constructing buildings such as groundwater leaching grounds, slopes, earthquakes, etc., and there is a temporary ground anchor that is removed after completion of construction, the present invention Relate to hypothetical ground anchors.

When building underground structures of high-rise buildings, subways or other large structures, H-beams are fixed vertically around the ground while adding depth to the ground, and earth walls or exponential walls are formed by using large trees. In this case, the earth pressure around the transverse transverse flow installed is subjected to pressure of several hundred tons as it enters the basement, resulting in an accident in which the earth wall collapses without overcoming the pressure.

In order to prevent the collapse of the earth wall, a forced ground hole connecting both earth walls in the underground space excavated using a large beam is sometimes installed.

However, such steel support is a factor that prevents smooth construction due to the structure of steel beams installed as a grid, causing various problems such as deterioration of work efficiency, extension of construction period, increase in construction cost, and enormous waste of steel.

On the other hand, as a commonly used temporary ground anchor body, a well-known U-turn anchor is used, and a plurality of inner bodies 4 are provided in the anchor hole 1, and the inner bodies 4 are bent in a U shape. It is a form to wind up the processed unbonded strand (5).

By the way, while the U-turn method described above has the advantage that the load can be efficiently distributed in the load bearing body 4, the strand body using a 7-twist PC strand is usually bent into a "U" shape to load-load the body 4 Bar wire strand bending part has a problem that plastic deformation occurs, and thus the wire strand's original properties cannot be exerted, especially tensile strength.In addition, when dismantling the anchor body, the part bent by heavy equipment such as a crane turns around. As the tension member has to be drawn out, the removal cost is high, and the drawn tension member is already deformed in a considerable amount around the load bearing body 4 and is twisted like a spring due to its elasticity, and thus cannot be reused. This has the disadvantage of difficulty in arranging the work area.

Therefore, the present invention was invented to solve the above problems, and the object of the present invention is to remove the stranded wire from the anchor body after completion of construction by using the shape characteristics of the seven twisted stranded wire, which is a general tensile material used for ground anchors. have. The seven twisted strands have a shape as illustrated in the cross-sectional view of the general unbonded strand in FIG. 3. For example, the seven twisted strands commonly referred to as the tension member 10 have a center element 11 at the center and the outer peripheral surface of the center element line. In accordance with the radially six six outer address line (12) is a twisted pair consisting of twisted in the right direction or the left direction, etc. The seven twisted strands as illustrated in FIG. 3 are characterized in that seven strands can be moved individually. That is, when hitting only the central element wire 11 of the tension member 10, the central element wire 11 may form a shape that enters inward compared to the outer address line 12, and one or more of the six outer address lines 12 Even in the case of a partial strike, the striked element moves in the hit direction compared to the other element lines. The ground anchor of the present invention utilizes this shape feature of the seven twisted strands to strike the tension member 10 from the anchor body by striking a part of the center element 11 or the outer address line 12 of the tension member 10 when the anchor is dismantled. It can be separated efficiently.

The present invention for achieving the above object, the coated tension member; A head cylinder having a wedgecon mounting portion capable of accommodating wedge cones while passing the tension member in the center, and a cylinder hollow formed in series with the wedge cone mounting portion and having a sealing mounting portion and a sealing bolt fastening portion; A wedgecon having a stop ring spring-mounted portion on the outer circumferential surface thereof and having a tapered shape on the outer circumferential surface thereof, and having a central through hole and a cap fastening portion on the upper side of the central through hole; A stop ring spring inserted into the stop ring spring mounting portion of the wedge cone and having a ring shape in which one portion is cut; A spring mounted on the upper portion of the wedge cone and pressing the wedge cone; A closed cap fitted to the cap fastening portion of the wedge cone and having a hat inner cavities therein and having a plurality of incisions; A ring-shaped bushing positioned at an upper side of the spring and having a rectangular cross section; A disk which is located on the upper surface of the bushing and is composed of a center plate, an outer plate, a blade, and the like, which are fitted to the disk settled portion of the head cap; A head cap fastened to an upper side of the head cylinder and having a recessed inner hole and having a disc settled portion at a lower end thereof; A sealer having a tapered cross section fitted into the sealer mounting portion of the head cylinder in a state of being fitted into the tension member and having a ring shape; A hollow bolt-shaped sealing bolt fastened to a sealing bolt fastening portion of the head cylinder in a state of being fitted with a tension member; A lower body head having a strand wire through-hole for accommodating a plurality of head cylinders and a tension member, a head cylinder mounting portion and a head cylinder coupling portion at an upper portion thereof, and a lower body coupling portion at a lower circumferential surface thereof; The hollow pipe-shaped inner body is provided.

The removable anchor of the present invention strikes and pushes the central element wire out of seven element wires at the opposite ends of the tension member when the anchor is dismantled, so that the central element wire of the tension material filled in the wedge cone is bent while pushing the disk through the inner hole of the cap and the disk. The disk separation process of separating the disk from the settled part and pushing it up, and the wedgeon fastened to the cap as the disc and the cap are pushed simultaneously so that the center plate of the disk, which is bent and pushed by the center wire, fits on the upper end of the cap At the same time, the stop ring spring, which is pulled up and eventually wraps up the wedge cone, meets the disc seat of the head cap and is inserted into the empty space of the disc seat, and the stop ring spring is inserted into the disc seat. Wedge cones, head caps and head cylinders Furthermore, the withdrawal or been able to without it becomes to remove the tension member that is fastened to the wedge cones.

1 is an exploded perspective view of an embodiment of the present invention anchor body

2-1 is an installation state diagram of the U-turn removable ground anchor

Figure 2-2 is an installation state of the removable ground anchor of the present invention

3 is a cross-sectional view of a typical unbonded strand

Figure 4 is a cross-sectional view of an embodiment of the present invention anchor body

5 is a cross-sectional view of the head cylinder of the anchor body of the present invention.

6 is a cross-sectional view of the head cap of the anchor body of the present invention.

7 is a cross-sectional view of the wedge cone of the anchor body of the present invention.

Figure 8 is a cross-sectional view of the disk of the anchor body of the present invention

Figure 9 is a cross-sectional view of the closed cap of the anchor body of the present invention

Figure 10-1 is a cross-sectional view of the stop ring spring of the anchor body of the present invention

10-2 is a modification of the stop ring spring of the anchor body of the present invention

11 is a cross-sectional view of the bushing of the anchor body of the present invention.

12 is a cross-sectional view of the sealing of the anchor body of the present invention.

Figure 13 is a cross-sectional view of the sealing bolt of the anchor body of the present invention

14 is a tensile material removal process of one embodiment of the anchor body of the present invention

15 is another tensile material removal process of one embodiment of the anchor body of the present invention

Figure 16 is a cross-sectional view of another embodiment of the anchor body of the present invention

Figure 17 is a cross-sectional view of the open cap of the anchor body of the present invention

18 is a tensile material removal process of another embodiment of the anchor body of the present invention

19 is a cross-sectional view of another embodiment of the anchor body of the present invention.

20 is a cross-sectional view of the outer uneven wedge cone of the anchor body of the present invention.

Figure 21-1 is an exploded perspective view of a tapered plate spring of the anchor body of the present invention

Figure 21-2 is a cross-sectional view of the tapered plate spring of the anchor body of the present invention

22 is a tensile material removal process of another embodiment of the anchor body of the present invention

Figure 23-1 is an exploded perspective view of the inner body head of the anchor body of the present invention

Figure 23-2 is a cross-sectional view of the lower body head of the anchor body of the present invention

<Explanation of symbols for main parts of drawing>

1: anchor ball 2: anchor body

3: Anchor Head 4: Lower Body

5: unbonded strand 6: mortar

7: anchorage

10: tension member 11: center element

12: outer line 13: covering

20: head cap 21: cap hole

22: cylinder assembly portion 23: disc mounting portion

24: uneven portion

30: closed hat 31: hat

32: visor 33: incision

34: wedge cone jaw 35: hat closure

40: disc 41: center plate

42: wing 43: outer plate

50: bushing 51: bushing hollow

60: spring

70: stop ring spring 71: spring plate

72: cut part 73: stop ring during compression

80: Wedge Con 81: Wedge Cone Central

82: incision 83: through hole upper portion

84: cap fastening portion 85: stop ring spring mounting portion

86: spiral

90 head cylinder 91 cap fastening

92: cylinder hollow 93: wedge cone mounting portion

94: through hole tension 95: sealing portion

96: sealing bolt fastening part 97: steel band fastening part

100: sealing 101: sealing center through

105: sealing bolt 106: sealing bolt central through

107: bolt head 108: bolt helix

110: open hat 111: hat through the center

112: wedge cone chisel 113: Changbu

115: Wedge Cone Wedge Cone 116: Wedge Cone Wedge Cone

120: tapered plate spring 121: spring hollow portion

122: spring visor 123: spring wing

124: spring wing incision

130: lower body head 131: lower body pipe fastening portion

132: through hole tension material 133: sealing bolt seat

134: tension member through groove 135: head cylinder binding portion

136: head cylinder coupling groove 137: head cylinder coupling groove

138: head cylinder mounting portion

140: lower body pipe

Hereinafter, described in detail by the accompanying drawings an embodiment of the present invention as follows.

Figure 1 shows an exploded perspective view of an embodiment of the anchor body of the present invention, the inner body pipe 140 of 140 is a member having the shape of a hollow steel pipe, such as a conventional hollow pipe.

2-2 shows a state diagram of the installation of the removable ground anchor of the present invention, in which a plurality of anchor bodies 2 having a plurality of anchor heads 3 fastened to the lower body 4 are installed, and each anchor head 3 is installed. Tighten the unbonded stranded wire (5) covered with a sheath 13 on the tension member (10), put it in the perforated anchor hole (1), fill the mortar (6), cure, and tension to perform a known anchorage (7). It shows that it was settled in the structure using).

3 is a cross-sectional view of a general unbonded strand, and in detail, the tension member 10 constituting the unbonded strand. Seven twisted strand wires, which are general tension members (10) used for ground anchors, have a central element wire (11) in the center and six outer address lines (12) radially along the outer circumference of the central element wire. The twisted strands of the seven strands of twisted twisted pairs are characterized by the fact that the seven strands can be moved individually. The ground anchor of the present invention utilizes the shape characteristics of the seven twisted strands to strike and push a portion of the central element wire 11 or the outer address line 12 of the tension member 10 when the anchor is released. (10) can be separated efficiently.

Figure 4 shows a cross-sectional view of an embodiment of the anchor body of the present invention, one embodiment has a tension member 10 penetrating through the center, from below the sealing bolt 105, the sealing ring 100 is a head cylinder It is fastened to the 90, the head cylinder inside the wedge cone 80, the stop ring spring 70 is wrapped around the wedge cone, the closed cap 30 is fastened to the wedge cone 80, the top of the wedge cone A spring 40 positioned to enclose a cap, a bushing 50 positioned at an upper portion of the spring, a disk 40 positioned at a top portion of the bushing 50 and inserted into a disc seat 23 formed in the head cap 20. And a head cap 20 fastened to the head cylinder 90 to serve as a lid.

Figure 5 is a cross-sectional view of the head cylinder of the anchor body of the present invention, the head cylinder 90 has a shape having a through hole in the center as a whole, the lower end of the through hole has a normal spiral sealing bolt for fastening the sealing bolt There is a fastening portion 96, and the sealing bolt fastening portion 96 has a sealing tapered portion 95 having a tapered shape in which the inner diameter becomes narrower in succession to the sealing bolt fastening portion 96, the sealing portion 95 is a straight circular through hole The tension member hole 94 is connected to the tension member hole 94, and the wedge cone mounting portion 93 is connected to the wedge cone mounting portion, which has a normal taper shape in which the diameter increases toward the upper portion, and has a tapered outer diameter. 80 is fitted, and a cylinder hollow 92 is formed to be connected to the wedge cone mounting portion 93 and continues in a straight circular through hole. A cap fastening portion 91 is formed at an upper end of the outer circumferential surface of the head cylinder 90, and the cap fastening portion 91 is able to be fastened to the head cap 20 through a conventional threading process. A steel band fastening part 97 having a groove formed in the shape of "C" is formed, and the steel band fastening part 97 forms a fine groove in the steel band fastening part 97 when bundling the plurality of head cylinders 90. It is used to fasten through a known steel band through.

Figure 6 shows a cross-sectional view of the head cap of the anchor body of the present invention, the head cap 20 is hollow and one side has a normal lid shape is clogged, there is a cap inner hole 21 is blocked on one side inside the cap hole On the wall surface of 21, there is an uneven portion 24 formed with a triangular, trapezoidal or other unevenness, and below the uneven portion there is a disk settling portion 23 having a larger diameter than the uneven portion 24. Below the tooth 23 is a cylinder assembly 22 having a normal fastening spiral, which is fastened to the head cylinder 90 described above.

Figure 7 shows a cross-sectional view of the wedge cone of the anchor body of the present invention, the wedge cone 80 is used as a means for fastening the tension material as the overall shape has a central through hole and the outer circumference of the same diameter and the outer circumference below It has a shape of a common hollow taper cone which narrows the outer diameter gradually, and is used by forming a set by dividing a plurality into a longitudinal direction from the top to the bottom. The wedge cone 80 has a wedge cone central through hole 81 penetrating the center portion, and a spiral portion 86 having a spiral such as a triangular or trapezoid is formed at a predetermined length from below the central through hole 81. On the top of the spiral portion 86, there is a cap fastening portion 84 having a larger diameter than the spiral portion and having a "c" shaped groove, and the cap fastening portion 84 subsequent to the cap fastening portion 84 again. Rather, the through hole upper end portion 83 is smaller in diameter. The outer circumferential surface of the wedge cone 80 has a constant length from the top to have the same diameter as the upper end of the outer circumference and has a normal tapered shape that gradually decreases in diameter toward the bottom of the outer circumferential surface. A stop ring spring mounting portion 85 having a '-' groove is formed so that the ring-shaped stop ring spring 70 is fitted.

8 is a cross-sectional view of a disk of the anchor body according to the present invention. The disk 40 has a center plate 41 having a round or rectangular triangle shape at the center thereof, and the center plate 41 has a predetermined width. The blade 42 has a plurality of protruding blades, the end of the blade 42 has a shape that is attached to the outer plate 43 formed to have a wider width than the blade, is a form of processing a thin plate material as a spring steel sheet And iron such as steel sheet or non-ferrous metal, plastic and the like can be used.

Figure 9 shows a cross-sectional view of the closed cap of the anchor body of the present invention, the closed cap 30 has the same shape as a general hat hat, one of the center has a closed hole cap 31 of the inner shape and the inner hole The upper end of the 31 has a cap closing portion 35 having a closed shape, the lower end of the outer diameter portion has a constant cross-sectional shape and has a protruding visor 32, and the upper ledge of the visor 32 is formed with a wedge There is a wedge-cone jaw 34, which is able to perform the role of dragging and raising the 80. In addition, the cap 30 has an incision 82 cut in a predetermined width from the visor 32 to the end of the inner cavity 31, that is, the closing portion 35, wherein the incision 82 is illustrated in FIG. 8. It should be wider than the width of the blade 42 of the disk 40 and the number and angle of division of the incision is the same as the blade 40 of the disk 40, so that the center plate 41 of the disk 40 is a hat 30 Into the inner cavity 31 of the disk, the blade 42 of the disk is to be fitted to the cut portion 82 of the cap so that the disk 40 can be assembled to the closed cap 30.

Figure 10-1 is a cross-sectional view of the stop ring spring of the anchor body of the present invention, Figure 10-2 shows a modification of the stop ring spring of the anchor body of the present invention, the stop ring spring 70 is a cross-section such as square or round The ring is a member of a ring shape having a ring called a spring plate 71, the spring plate 71 has an open type structure having a cut portion 72 cut one place in a constant width, as shown in Figure 10-2 As can be changed in the direction of increasing or decreasing diameter. 10-2 shows a stop ring spring 70 which functions to increase the diameter as the original diameter becomes smaller when the compression force is applied and the compression diameter is released when the compression force is released.

The spring 60 illustrated in FIGS. 1 and 4 is a conventional compression coil or leaf spring.

Figure 11 is a cross-sectional view of the bushing of the anchor body of the present invention, located between the spring 60 and the disk 40, the state close to the pure shear when the compression force of the spring 60 is applied to the disk 40 It is intended to be delivered to the ring-shaped member having a rectangular cross section.

12 is a cross-sectional view of the sealing of the anchor body of the present invention, the sealing ring 100 is a sealing tapered portion 95 of the head cylinder 90 as a hollow tapered cone-shaped member having a sealing center through hole (101) ) Is inserted into the head cylinder 90 serves to seal the foreign matter from penetrating from the outside to the inside. In the sealing central through hole 101, the tension member 10 covered with the sheath 13 is fitted to pass.

Figure 13 is a cross-sectional view of the sealing bolt of the anchor body of the present invention, the sealing bolt 106 has a shape of a common hollow bolt, the sealing bolt central through hole (10) through which the tension member 10 is fitted (13) 106), the outer circumferential surface is composed of a bolt spiral portion 108 having a spiral and a bolt head portion 107 is machined hexagonal, square head and the like used for tightening the bolt. Figure 14 shows a process of removing the tension member of an embodiment of the anchor body of the present invention, showing a process of separating and pulling out the tension member 10 from the anchor head composed of the members described with reference to Figures 1 to 13 above. The first picture on the left shows the process of hitting and pushing the central element wire 11 of the tension member 10, and the second picture on the left shows a hat (closed cap) that is pushed up by the continuous blow. The inner plate 31 of the disk 30 meets the disk 40 and pushes up the center plate 41 of the disk so that the disk 40 is deformed and the outer plate 43 of the disk 40 is head cap ( 20 shows the process of being separated from the disk settlement 23, the third picture from the left shows the cap closed portion of the closed cap (30) as it continuously strikes and pushes the central element (11) The disk 40, which has been pushed up to 35), is pushed up with the closed cap 40 this time, and the closed cap 40 that is pushed up is shown to be dragged up together with the wedge cone 80, and the wedge cone is pulled up. Stop ring spring (70) filled in (80) When the disk settling portion 23 of the head cap 20 meets and recovers from the compressed state as shown in FIG. 10-2, the diameter of the stop ring spring 70 is inserted into the disk settling portion 23 while the diameter thereof increases. Is showing. Thus, the stop ring spring 70 is fastened to the wedge cone 80 is fitted to the disc set-up portion 23 and acts like a normal inner diameter snap ring so that the wedge cone 80 breaks the stop ring spring 70. Before it is possible to move forward or backward, etc., the position of the wedge cone 80 is fixed. In addition, the clamping force to the tension member 10 of the wedge cone 70 is also released. The fourth figure from the left shows a process of separating and pulling out the tension member 10 from the wedge cone 70 fixed through the process of the third figure. Figure 15 shows another tension member removal process of an embodiment of the anchor body of the present invention, Figure 15 may be referred to a modification of the tension member removal process shown in FIG.

The first picture on the left shows the process of striking and pushing the central element 11 of the tension member 10, and the second picture on the left shows the hat (closed) of the hat of the center element 11, which is pushed up by the continuous blow. The inner plate 31 of the disk 30 meets the disk 40 and pushes up the center plate 41 of the disk so that the disk 40 is deformed and the outer plate 43 of the disk 40 is head cap ( 20 shows the process of being separated from the disk settlement 23, the third picture from the left shows the cap closed portion of the closed cap (30) as it continuously strikes and pushes the central element (11) The disk 40, which has been pushed up to 35), is pushed up with the closed cap 40 this time, and the closed cap 40 that is pushed up is shown to be dragged up together with the wedge cone 80, and the wedge cone is pulled up. Stop ring spring (70) filled in (80) As shown in FIG. 14, the disc cap 23 of the head cap 20 is not fitted to the disc cap 23, but is continuously pushed up through the disk cap 23. The fourth figure from the left shows the disc 40 and the stop ring spring 70 pushed up through the process of the third figure. 6 shows that the uneven portion 24 is formed in the cap inner hole 21 of the head cap 20. The concave-convex portion 24 of the head cap 20 serves to prevent the disk 40 and the stop ring spring 70 pushed up to the concave-convex portion 24 from being pulled down easily. Therefore, the fourth figure from the left side of FIG. 15 shows the wedge cone by preventing the disk 40 and the stop ring spring 70 pushed up to the uneven portion 24 of the head cap 20 by being caught by the unevenness. (80) shows the process of separating and pulling out the tension member (10) easily.

Figure 16 is a cross-sectional view of another embodiment of the anchor body of the present invention, Figure 17 is a cross-sectional view of the open cap of the anchor body of the present invention open cap 110 in place of the closed cap 30 used in the above embodiment It shows the case of using.

Figure 17 shows a cross-sectional view of the open cap of the anchor body of the present invention, the open cap 110 has a hollow central hole 111 in the center, as shown in the closed cap 30 illustrated in Figure 9 113 has a wedge-cone jaw 112, and unlike the hat 30, the hat closure 35, there is no cut 33, etc. has been shown.

FIG. 18 illustrates a process of removing the tension member 10 from the wedge cone 80 using the opening cap 110 shown in FIGS. 16 and 17. Is showing.

The first picture on the left shows the process of hitting and pushing the center element 11 of the tension member 10, and the second picture on the left shows the center element 11, which is pushed up by the continuous blow, with an open cap ( 30 through the central hole 111 of the cap meets the disk 40 and pushes up the center plate 41 of the disk, eventually the disk 40 is deformed, the outer plate 43 of the disk 40 is the head cap (20) shows the process of being separated from the disc set-up 23, the third picture from the left shows that the disk 40 is the head cap (20) by continuously hitting and pushing the center element (11) It shows that it pushed up to the depth of the cap inner hole 21 of). The fourth figure from the left shows a process of pushing up one or more of the outer address lines 12 instead of the center line 11, and the outer address line 12 pushed up through the blow is an open cap 110. It will push up and open cap 110 will push up the wedge cone 80 at the same time again. As the wedge cone 80 is pushed up by hitting the outer address line 12, the stop ring spring 70 filled in the wedge cone 80 meets the disk settling portion 23 of the head cap 20. As shown in the diagram, a portion of the stop ring spring 70 is inserted into the disc seat 23 while the diameter is increased while recovering from the compressed state. As the stop ring spring 70 fastened to the wedge cone 80 is fitted to the disc seat 23, the wedge cone 80 can not move forward or backward until the stop ring spring 70 is damaged. It becomes a state and the position of the wedge cone 80 is fixed. In addition, the clamping force to the tension member 10 of the wedge cone 70 is also released. The fifth figure from the left shows a process of separating and pulling out the tension member 10 from the wedge cone 70 fixed through the process of the fourth figure.

Figure 19 shows a cross-sectional view of another embodiment of the anchor body of the present invention, Figure 20 is a cross-sectional view of the outer uneven wedge cone of the anchor body of the present invention, Figure 21-1 is an exploded perspective view of a tapered plate spring of the anchor body of the present invention Figure 21-2 shows a cross-sectional view of the tapered plate spring of the anchor body of the present invention.

19 is a cross-sectional view of another embodiment of the anchoring body of the present invention. The outer uneven wedge cone 115 having a shape different from that shown in the cross-sectional view of FIG. 16 is used, and the tapered plate spring 120 is also used. It seems to be using.

20 is a cross-sectional view of the outer uneven wedge cone of the present invention, the outer uneven wedge cone 115 is a plurality of trapezoids along the outer circumferential surface on the outer peripheral surface, unlike the wedge cone 80 illustrated in FIG. It can be seen that the wedge cone recess 116 is formed of a groove in the form.

Figure 21-1 is an exploded perspective view of the tapered plate spring of the anchor body of the present invention, Figure 21-2 is a cross-sectional view of the tapered plate spring of the anchor body of the present invention, the tapered plate spring 120 is a disk ring-shaped spring visor ( 122, the upper portion of the inner rim surface of the spring visor 122 has a root and round of the same diameter as the spring visor and a plurality of spring wings 123 inclined to be inclined to have a constant angle while being pulled in in the direction of decreasing diameter. There is a), the spring wing 123 is separated into the individual so that the spring blade incision 124 is formed therebetween, and also inside the spring wing 123, the spring hollow portion 121 naturally Is a member characterized in that formed. The spring wing 123 is easily deformed by the force pushed up from the bottom to the outside due to the root portion having a round, but conversely, the resistance against the bending force from the top to the bottom is reversed. Dog wings 123 naturally act as a leaf spring. The spring wing 123 formed as described above is inserted into the wedge cone outer concave-convex 116 of the outer concave-convex wedge cone shown in FIG. 20 to smoothly move in one direction and prevent the progress in another direction. It will act as a stopper.

22 is a view illustrating a process of removing a tension member according to another embodiment of the anchoring body of the present invention, and a tension member according to another embodiment configured by using the members illustrated in FIGS. 19, 20, 21-1, and 21-2. The removal process is shown. The first picture on the left is a plurality of wedge cone outer convex concave 116 formed on the concave convex wedge cone 115 in a state in which the concave-convex wedge cone 115 is held in the head cylinder 90 with a tension member 10. A groove is formed in the cylinder hollow portion 92 of the head cylinder 90 so that the spring wing portion 123 of the tapered plate spring 120 is fitted into the uneven portion of the outermost unevenness 116 at the uppermost end. The assembly is shown in the state of fastening. The second and third pictures on the left show the process of striking and pushing the central element 11 of the tension member 10, and the figure shows that the central element 11, which is pushed up by the continuous strike, is the open cap (30). After passing through the central hole 111 of the cap and meets the disk 40 and pushes up the center plate 41 of the disk, and eventually the disk 40 is deformed, the outer plate 43 of the disk 40 is the head cap ( 20 shows that the disk 40 is pushed up to the depth of the cap inner hole 21 of the head cap 20 by the process of being separated from the disk settlement 23 of the 20 and continuously hitting the central element wire (11). Giving. The fourth figure from the left shows a process of pushing up one or more outer address lines 12 instead of the central element line 11, and the outer address line 12 pushed up through the blows opens the open cap 110. Push up and open cap 110 will push up the uneven wedge cone 115 at the same time again. The outer uneven wedge cone 115 pushed up by the outer address line 12 is a spring wing 123 of the tapered plate spring 120 is fastened to the head cylinder 90 is the wedge cone outer convex concave 116 formed on the outer peripheral surface You can see it going up while overcoming it. The uneven wedge cone 115 can be easily lifted up while overcoming the spring wing 123 of the tapered plate spring 120, but is drawn downward as described in FIGS. 21-1 and 21-2. It requires a lot of power. The fifth figure from the left shows a process of separating and pulling out the tension member 10 from the uneven wedge cone 115 while the uneven wedge cone 115 is fixed by the tapered plate spring 120.

In another embodiment shown in FIGS. 19, 20, 21-1, 21-2, 22, the closed cap 30 is used instead of the open cap 110 and the stop ring on the wedge cone 80 is also used. The same result can be obtained by using the spring 70 instead.

Figure 23-1 is an exploded perspective view of the lower body head of the anchor body of the present invention, Figure 23-2 is a cross-sectional view of the lower body head of the anchor body of the present invention, the inner body 4 shown in Figures 1 and 2-2. It is shown that the lower body head 130 is a component of. As illustrated in FIG. 1, the lower body head 130 may fasten the plurality of head cylinders 90 to the upper portion, and the lower body head 130 to the lower body pipe 140. The lower body head 130 forms a lower body pipe fastening portion 131 by adjusting its diameter to be fitted with the lower body pipe 140 at the lower portion of the outer peripheral surface of a member such as a circular rod having a predetermined length, and the head cylinder on the upper surface thereof. The mounting portion 138 is formed and a plurality of holes are formed in the longitudinal direction. Each hole forms a tension member through hole 132 through which the tension member 10 covered with the covering 13 passes, and the upper part of the tension member through hole 132. The sealing bolt seating portion 133 is formed from the head cylinder mounting portion 138 to a left portion of a shape having a larger diameter than the tension member through-hole 132 to a predetermined depth. A head cylinder binding part 135 is formed between the tension member through hole 132 and the tension member through hole, and the head cylinder binding part 135 protrudes from the head cylinder mounting part 138 to fit the outer diameter of the head cylinder 90. The head cylinder 90 of the head cylinder binding unit 135 is fastened to a lower portion of the head cylinder binding groove 136 having a semicircular shape that is similar to the outer diameter of the head cylinder 90. The upper portion of the head cylinder coupling groove 136 has a semicircular protrusion having a diameter similar to that of the steel band coupling portion 97 formed in the head cylinder 90, which is called a head cylinder coupling groove 137. The steel band fastening part 97 of the head cylinder 90 is fitted into the fastening groove 137. In this case, the head cylinder binding unit 135 protruding from the head cylinder unwinding unit 138 may be welded or a conventional bolted joint. In addition, a plurality of tension member passage grooves 134 are formed in a semicircular groove shape from the top to the bottom along the outer circumferential surface of the lower body body 130 between the plurality of tension member through-holes 132 formed in the lower body head 130, wherein the tension member passes through The groove 134 may be configured by combining one or a plurality of semicircular grooves.

As described above, according to the present invention, the wedge cone is fixed by using a stop ring spring or a tapered plate spring while pushing up the wedge cone by hitting the central element wire or the outer address line, and the tension member can be separated from the wedge cone. It is now possible to remove the tension member completely to the ground.

Although described in the embodiments of the present invention so far, the present invention is not limited thereto, and various embodiments that can be modified and changed within the true spirit and scope of the principles described and claimed are within the protection scope of the present invention. You will have to understand.

Claims (13)

Clad tensile material; A head cylinder; Wedge cones for binding the tension member; A cut ring-shaped stop ring spring; Springs; With a hat; A ring shaped bushing; A disk consisting of a center plate, an outer plate and a wing; A head cap; Sealing with a hollow taper ring shape; A hollow bolt-shaped sealing bolt; A lower body head having a tension hole for accommodating a plurality of head cylinders and tension members, a head cylinder mounting portion and a head cylinder coupling portion at an upper portion thereof, and a lower body coupling portion at a lower outer peripheral surface thereof; Removable ground anchors, characterized in that consisting of a hollow pipe-shaped load chamber 2. The removable ground anchor according to claim 1, wherein the head cap has a cap hole, a concave-convex portion having a concave-convex portion, and a disk set-up portion and a cylinder assembly portion under the concave-convex portion. 2. The removable ground anchor according to claim 1, wherein the hat has a hat inner perforation, a bottom part with a visor, and a closed hat having a plurality of incisions. 2. The removable ground anchor according to claim 1, wherein a disk having a center plate, a plurality of wings and a plurality of outer plates is used. 2. The removable ground anchor according to claim 1, wherein a hollow ring shaped bushing is used. 2. The removable ground anchor according to claim 1, wherein a stop ring spring having a cutout is used as the ring-shaped spring. According to claim 1, wherein the wedge cone has a stop ring spring mounting portion on the upper side of the outer peripheral surface has a tapered shape of the outer peripheral surface below, has a central through hole and a cap fastening portion on the upper side of the central through hole has a spiral portion below Removable ground anchors characterized by having a plurality of cutouts 2. The removable ground anchor according to claim 1, wherein the head cylinder has a wedgecon mounting portion for accommodating wedges and a cylinder hollow in the wedge cone mounting portion, and has a sealing mounting portion and a sealing bolt coupling portion. The wedge cone mounting portion for accommodating the wedge cone, and the cylinder hollow portion in the wedge cone mounting portion, and the groove for fastening the tapered plate spring in the cylinder hollow portion, and the sealing mounting portion. And a removable ground anchor, characterized by having a sealing bolt connection. 2. The removable ground anchor according to claim 1, wherein the hat has an open hat having a central hole in the hat and a visor at the bottom thereof. According to claim 1, wherein the wedge cone has a stop ring spring mounting portion and a plurality of polygonal groove-shaped wedge cone outer concave on the upper side of the outer circumference and the outer circumferential surface is formed in a tapered shape and has a central through and central through Removable ground anchor, characterized in that the outer concave wedges having a plurality of incisions having a helix with a cap fastening portion on the side 2. The removable ground anchor according to claim 1, wherein a tapered plate spring is used having a spring visor and having a plurality of spring wings and a spring wing incision. In the removal of the removable ground anchor, it is possible to separate and extract the strand from the wedge by releasing the engagement of the wedge from the strand through the process of hitting one or a portion of the center strand and the outer address line of the twisted strand. Ground anchors