KR100284670B1 - Temporary ground anchor body and tension material dismantling method - Google Patents

Abstract

The present invention relates to a disassembled temporary ground anchor body and a tension member dismantling method, wherein a separating locking wall is formed on an inner circumferential surface, a central through hole is formed below a separating locking wall in a central portion, and a plurality of outer holes are radially formed. A cylinder having a locking jaw formed at an upper side of the inner circumferential surface of the central hole, a plurality of anchor tension member binding cones inserted into an upper side of the outer hole to fasten tension members, and inserted into a central hole of the cylinder and having a cylindrical shape; In addition, the anchor dismantling center member which binds the dismantling tension member, the spacer inserted between the anchor dismantling center member and the anchor tension member binding cone, and is located at the bottom of the cylinder to create a passage of the tension member from the outside It is attached to the lower cover and the upper part of the cylinder to prevent moisture and mortar from penetrating into the cylinder. There is an upper cover that prevents axial detachment of the binding cone, a cap that prevents moisture, mortar, etc. penetrating from the outside at the upper part of the cylinder, and a load-bearing body that is coupled with the cylinder and the lower cover to transmit tensile force to the ground. .

In addition, the tension member dismantling process of the present invention by the pull-out force of the dismantling tension member to overcome the pressure generated in the anchor tension tension member binding cone to break the locking jaw breaking the anchoring jaw breaking process in place, and anchor The tension member is to be dismantled by performing a dismantling process in which the dismantling member is separated from the dismantling center member, and a dismantling process of drawing out the tension members by tensioning the tension members to the ground.

The present invention is easy to assemble, regardless of the surrounding mortar after assembly, it is possible to completely pull out the tension member to the ground by dismantling the cone, and to secure a construction stability by providing accurate tensile force.

Furthermore, in the process of dismantling the tension member, the jamming jaw supporting the anchor dismantling member is broken by the pulling force of the dismantling tension member, and the tension member is released in a very simple operation in which the dismantling tension member is separated from the anchor dismantling center member. It is easy to work, and the working time is greatly shortened, and the drawing device can be extracted with very little pulling force as compared to the separation of the tension member by breaking the connection cone for dismantling the anchor. Since the tension members are pulled away from the anchoring center member and anchor tensioning cone slowly without being pulled out suddenly, there is an advantage that can completely prevent the risk of safety accidents. In addition, the shape of the anchor member center member is also simple, and the manufacture of the anchor member center member is also very simple and easy.

Description

REMOVABLE GROUND ANCHORAGE AND METHOD DISASSEMBLING TENSILE MEMBERES

The present invention relates to a decomposable temporary foundation anchor body and tension member dismantling method which can be easily dismantled and removed after installation of the anchor anchor placed in the basement after the construction of the anchoring method in the construction of underground continuous wall in construction, civil structure construction will be.

In general, permanent ground anchors are anchors installed in groundwater leaching grounds, slopes, earthquakes, etc. to prevent the movement or distortion of structures during construction or tower construction, and underground fixed structures that are removed after completion of construction have temporary ground anchors. The present invention relates to hypothetical ground anchors.

In the construction of underground structures of high-rise buildings, subways and other large structures, H-beams are fixed vertically around the ground while increasing the depth of the underground, and the earth walls or the exponential walls are formed by using the large trees. In this case, the earth pressure around the horizontally installed flat plate receives a pressure of several hundred tons as it enters the basement, and eventually causes the earthquake to collapse due to the earth wall being unable to withstand the pressure. In order to prevent the collapse of the earth wall, a complex structure of forced supporters, which connect the two earth walls vertically and horizontally, is installed in the underground space excavated using a large H beam. However, these steel supports are the obstacles to the smooth construction of construction equipment due to the structure of the forced beams installed in the grid, and despite their usefulness such as deterioration of work efficiency, extension of construction period, increase of construction cost, and huge waste of steel, etc. I have a lot of problems.

Another construction method, the underground continuous wall construction method, has the disadvantage that the surface of the wall is irregular and needs to be polished. In this case, it is also a pollution factor such as noise and dust. Therefore, the construction of the continuous wall by the anchor method is often adopted.

U.S. Patent No. 4,592,178 pivots a plurality of wing arms to expand the arms in an excavation hole to provide an anchor function. In U.S. Patent No. 4,832,535, a method of anchoring is also provided, but the tension member formed therein remains as it is. Therefore, it can be a serious problem after the completion of construction.

Removable anchors provided in Japanese Patent Publication Nos. Hei 3-77,891 and Hei 2-5,206 are anchored by inserting a removable core at the center into an excavation hole and integrating various types of tension member fastening structures around them through spacers. The removal of the center core provides a method to remove the tension member by breaking the fastening structure between the spacer and the tension fastening structure. However, since the bond between the spacer and the tension member fastening structure cannot be maintained strongly around the center core, it is dismantled naturally after installation and loses its function. Japanese Patent Application Laid-Open No. 3-77891 has a core material having a tapered cone portion and around it. It is composed of a tension member positioned so that the tip fits into the tension member groove of the tapered cone portion, and a joint member positioned between each side of the tapered cone portion. By pulling the tapered cone portion over the entire length of the anchor, the tension member has a common length over the entire length of the anchor. Extruded in the hole to be free from the restraint of the grout material to allow the removal of the anchor. Japanese Unexamined Patent Application Publication No. 2-5206 consists of an unbonded core material, a spacer made by a plurality of cores to be disassembled when the core material is removed, and a tension member positioned at the outer periphery of the spacer. The lower surface is collapsed so that the tension member bonded to the spacer can be removed.

In this case, however, only one side wall is attached to the spacer and the tension member is insufficient to pull out the tension member to withstand the transverse soil pressure, and the assembly is maintained even when the anchor bodies are assembled to insert these anchor bodies into the excavation hole. The process of inserting and inserting into an excavation hole is not easy and of course, since it is bonded and integrated with the surrounding mortar, it does not separate well and thus remains a theoretical design that cannot be applied in the actual construction site.

In order to improve the above-mentioned disadvantages, the present inventors arrange anchor anchoring cones for anchoring in the center of anchor anchoring centers and arrange spacers along the outer circumferential surface thereof, and then arrange anchor tensioning cones for anchoring without gaps. We have developed an integrated dismantleable anchor body and filed it in Korea Patent Application Nos. 93-7,616, 97-36,215 and 98-18038. If the anchor body only removes the center member for anchor dismantling, the spacer is collapsed inside by the tension force of the tension member and the support structure is dismantled. Thus, the clamping force of the binding cone is released by vibrating or tensioning the tension member in the vicinity. The tension member can be easily removed from the ground.

However, this invention has a disadvantage in that the diameter of the cylinder, which is the core of the tension member removal, becomes large in dependence on the size of the binding cone. This has a problem that increases the construction cost because there is a problem to increase the diameter of the anchor when construction.

Therefore, the present invention was devised to solve the above-mentioned defects and problems, and it is easy to use a temporary anchor anchored in the basement after the construction of the anchoring method in the construction of the underground continuous wall in construction and civil structure construction. The purpose of the present invention is to provide a dismantleable ground anchor body and tension member dismantling method that can be dismantled and safely removed.

In order to achieve the above object, the disassembled temporary ground anchor body of the present invention is formed with a separate locking wall at the upper side of the inner circumferential surface of the body, and a central through hole is formed at the lower side of the upper separating locking wall at the central portion of the body. A cylinder having a plurality of outer cylinders radially formed around the separation wall, and a cylindrical member inserted into an upper portion of the central hole of the cylinder and provided with a friction element on an inner circumferential surface thereof and having a cylindrical shape for binding a dismantling tension member; And a plurality of anchor tension cone binding cones inserted into the upper portion of the outer hole to fasten the tension member, a lower cover having a stopper coupled to the lower end of the cylinder, and the anchor dismantling portion above the inner circumferential surface of the central hole. The locking jaw is formed so that the dragon core material is caught and fixed during the dismantling process, and during the anchor dismantling A spacer inserted between the ash and the anchor tension cone binding cone, an upper cover to prevent the anchor material and the anchor tension anchor binding cone from being separated, and protecting the inside of the cylinder and infiltrating moisture and mortar It is configured to include a cap to prevent.

In addition, the tension member dismantling method according to the present invention by the pull-out force of the dismantling tension member during the tension member dismantling process to overcome the pressure generated in the anchor tension tension member binding cone to break the locking jaw and break away from the place The tension member is dismantled by performing a fracture process and a tension member separation process of contacting the detached anchor dismantling center member with the stopper to prevent movement of the anchor dismantling center member and extracting and separating the tension member from the anchor dismantling center member.

1 to 11 is a temporary ground anchor body and tension member dismantling hole of the present invention

As a drawing about the law,

Figure 1a is a schematic cross-sectional view of the present invention anchor body is installed.

Figure 1b is a block diagram of the inner body is bonded to the anchor body of the present invention.

Figure 2 is an exploded perspective view of one embodiment of the anchor body of the present invention.

Figure 3a is a cross-sectional view of the assembled anchor body of the present invention.

Figure 3b is a cross-sectional view of the anchoring center material.

Figure 4 is a partially cutaway perspective view of the cylinder portion of the anchor body of the present invention.

5 to 7 are cross-sectional views showing the dismantling process of the anchor body.

8 is a perspective view showing a tension member binding cone.

9 is a plan view of the anchor body;

10 is a plan view showing a modification of the spacer.

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

* Explanation of symbols for main parts of the drawings

10 cylinder 11 center hole

11a: locking groove 11b: locking jaw

12: through hole 13: the top surface

13a: bottom surface 13b: bolt hole

14: upper side separation wall 15: contact groove

20: anchor tension cone binding cone 30: anchor dismantling core material

30a: center hole 31: sleeve

32: insert 33: friction element

35 spacer 35a, 35b, 35c, 35d: contact surface

40: upper cover 41: lower cover

41a: Stopping jaw 43: Lower body fastening portion

43a: inner circumference 45,46: guide

50: cap 51: space

60: lower body 60a: protrusion

60b: hole 61: outer diameter

W: Tensioner for dismantling W ': Tensioner for tension

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

1 to 4, 10 is a cylinder, 11 is a central through hole formed on the center line of the cylinder 10, 12 is a through hole formed around the central through hole 11, 13 is a top surface of the cylinder 10, 14 shows an upper separation locking wall formed at an upper side of the cylinder 10, for example, the cylinder 10 is formed in a cylindrical shape, and a central through hole 11 is formed at the center of the upper separation locking wall 14. The plurality of outer holes 12 are radially arranged around the center hole 11.

In the figure, 20 shows the anchor tension cones for anchor tension, respectively, the anchor tension cones for tension anchors 20 are used to fix the tension tension members (W '), respectively.

The upper side of the cylinder 10, the contact hole 15 into which the anchor tension cones 20 for anchor tension can be fitted as much as the number of the anchor tension tension binder cones 20 for separating the outer wall of the locking wall 14. (12) It is formed in the upper side, respectively, and the locking projection 11b is formed in the center hole 11. As shown in FIG.

Anchor dismantling center material 30 is inserted into the central through hole 11 of the cylinder 10, and a tension member W for dismantling is inserted into the center hole 30a of the center material 30 for anchor dismantling. Spacer 35 for anchor anchor tension member binding cone 20 is radially inserted into the close contact groove 15 around the anchor member 15 and anchor anchor core member 30 and anchor tension member binder cone 20 are fixed so as not to flow. ) Is inserted. The anchor tension tension binding cone 20 uses a conventional wedge cone.

The anchor tension tension member binding cone 20 is, for example, as shown in Figures 8a, 8b, the concave-shaped without a tap, the concave-convex portion 24 is formed on the main surface of the inner tension member insertion hole 23, the diameter is A ring groove 25 is formed on the outer circumferential surface of the wide upper portion, and the binding forging pieces 20a, 20b, and 20c, which are divided into multiple parts by inserting the elastic ring 21 into the ring groove 25, have cutouts 22. It is made to be conical with each other in a conical form. The close contact groove 15 of the cylinder 10 is formed to be inclined in a tapered shape so that the anchor tensioning member binding cone 20 can be inserted into close contact.

As shown in FIGS. 2 and 3A, the spacer 35 is in contact with the outer circumferential surface of the anchor member center member 30 and at the same time with the outer circumferential surface of the anchor tensioning member binding cones 20, so that these contact surfaces 35a are formed. (35b) and (35c) are formed in an arcuate cross section so as to be in close contact during assembly.

2 and 9, the spacer 35 is formed such that the contact surfaces 35a, 35b, and 35c are in contact with the outer peripheral surface of the anchor tensioning member binding cone 20 for anchor tension and the center member 30 for anchor dismantling. 10, the contact surfaces 35c and 35d may be formed to contact the outer circumferential surfaces of the anchor member center member 30 and the anchor tension member binding cone 20. The spacer 35 may be formed in a simple rod, a polyhedron, and various forms. In addition, the spacer 35 may have an appropriate thickness difference, and the upper and lower thicknesses of the anchoring center member 30 and the anchor may be used. It can be changed according to the shape of the tension member binding cone 20 for tension.

The spacer 35 is such that one spacer 35 supports one anchor tension member Binding Cone 20 as shown in FIG. 10, or two anchor tension member Binding Cones 20 as shown in FIG. 9. It may be formed, and may be formed to support three or more anchor tension member binding cone 20 as needed. In addition, the number used of the spacer 35 may be changed according to the number using five or the tension tension member binding cone 20 for anchor tension as shown in Figs.

The locking jaw 11b formed at the upper portion of the inner circumferential surface 11 of the central through hole 11 of the cylinder 10 may be integrally formed at the upper portion of the central through hole 11, or the locking jaw 11a or the sitting jaw may be formed at the upper portion of the inner circumferential face 11. It can be formed by inserting a circular member that can serve as a snap ring or locking jaw.

The anchor dismounting center member 30 has a larger outer diameter than that of the locking jaw 11b so that it can be inserted into the central through hole 11 of the cylinder 10 and placed on the locking jaw 11b. In addition, the inner diameter of the anchor member center member 30 is formed to be smaller than the inner diameter of the locking jaw (11b) is formed so that the inner circumferential surface of the anchor member center material 30 protrudes inward than the inner peripheral surface of the locking jaw (11b). have. The protruding length can be changed as needed. And, the outer circumferential surface of the anchor member core member 30 has the same diameter as the upper end and the lower end as shown in Figure 3a and as shown in Figure 11 the lower portion is formed of the same diameter, except for the lower portion of the top and bottom It can be tapered to be inclined to gradually increase in diameter as it goes.

The anchor dismantling center member 30 may use a conventional strong grip or the like, and the special sleeve 31 is strongly pressed against the dismantling tension member W to bind the dismantling tension member W. In this case, the sleeve 31 may have a spiral on its inner circumferential surface to bind the dismantling tension member W, and a cylindrical insert 32 having a spiral formed between the sleeve 31 and the dismantling tension member W, or a sharp edge. A friction element 33 such as a spring having a face may be inserted to bind the tension member W for dismantling. The anchor member core material 30 can be freely designed and processed to exhibit any fixing force. For example, the design load never falls out, but when a predetermined removal load is applied beyond the design load, the tension member for dismantling is released.

The lower cover 41 is fastened to the lower end surface 13a of the cylinder 10, and the upper part of the lower cover 41 separates the dismantling tension member W from the anchor dismantling center member 30. Helpful stoppers 41a may be formed.

The tension members (W) and (W ') are usually tension members used for wire or PC steel wire, other temporary substructure anchors and removal anchors.

The upper cover 40 and the cap 50 are fastened to the upper end of the cylinder 10. The upper cover 40 is fastened by bolts 42 to two or more bolt holes 13b formed on the upper surface 13 of the cylinder 10, and slightly larger than the diameters of the tension members W and W '. A plurality of diameter guide holes 45 are formed.

The cap 50 is formed to have a space 51 to the extent that the tension members (W), (W ') can be sufficiently flow therein, and the well-known lid is coupled to the outer peripheral surface of the upper portion of the cylinder (10) It is made to fasten by the method of making. As another example, the cap 50 may be attached to the outer circumferential surface of the upper portion of the cylinder 10 by attaching a ring of friction material.

In addition, by forming a plurality of bolt holes corresponding to the bolt hole 13b of the cylinder 10 in the cap 50, the cap 50 and the upper cover 40 may be fastened together using a separate long bolt, Another form of the cap 50 and the top cover 40 serves as one can be fastened to the cylinder.

The lower cover 41 which is fastened to the lower end of the cylinder 10 has a bolt 42 in two or more bolt holes 13b formed in the lower surface 13a of the cylinder 10 in the same fastening structure as the upper cover 40. ) Is fastened. In addition, guide holes 45 and 46 are formed in the periphery and the center of the lower cover 41 to allow the tension members W 'and W to be covered by the covering material so as not to contact the mortar. At this time, the guide hole 46 formed in the center portion is formed with a larger diameter than the plurality of guide holes 45 formed in the peripheral portion, the sealing between the guide holes 45, 46 and the covering material is mortar or the like cylinder ( 10) Do not penetrate into the interior.

As another example, the cylinder 10 and the lower cover 41 may be integrated.

The lower cover 41 is a lower body fastening portion 43 is formed in the lower portion is to fasten the lower body 60. The lower body fastening portion 43 is a method of fastening the cylindrical outer diameter portion 61 of the lower body 60 to the inner peripheral surface 43a of the lower body fastening portion 43, as shown in Figs. For example, the outer diameter portion of the lower body fastening portion 43 may be fastened to the inner circumferential surface of the lower body 60. At this time, the lower body 60 is preferably a cylindrical shape, the outer peripheral surface is preferably processed into a rough shape. In addition, a protruding portion 60a may be formed on an outer circumferential surface of the lower body 60, and a hole is formed in the main wall of the lower body 60 so that the mortar, which penetrates a portion of the cylinder and fills the inside and the outside of the lower body 60, becomes one. You may give 60b. The holes 60b are evenly formed along the longitudinal direction of the lower body 60. As the load bearing body 60, various materials, such as metal and fiber reinforced plastics, can be used.

11 is a cross-sectional view of another embodiment of the anchor body of the present invention, except for the upper portion of the lower portion of the anchor member center member 30 inserted into the central through hole 11 of the cylinder 10 in the shape of a taper. The case is illustrated.

On the other hand, Korean Patent Publication No. 87-1862 discloses a first ring member made of expanded material, one or two or more second ring members disposed inside the first ring member, and connected to an inner wall of the second ring member. An anchor head which slides in the longitudinal direction, connects the second ring member to the inner wall of the first ring member, slides in the longitudinal direction, and expands the first and second ring members, and a tension member fixed to the anchor head. Earth anchors are known.

More specifically, the earth anchor has one end of the fuselage as the eastern part, and the groove is formed in the longitudinal direction of the fuselage to form the corner part, and the tapered part is formed at the distal end, near the boundary between the eastern part and the corner part. Outer ring (first ring member) having cutouts, one end of the fuselage is made eastern, grooves are formed in the longitudinal direction of the fuselage to form corners, and a cutout is formed near the boundary between the eastern part and the corners. A slider ring (second ring member) having a tapered portion at its distal end, an anchor head having a tapered portion at its distal end, and a guide formed in the longitudinal direction on its outer circumferential surface, and a tension member fixed to the anchor head.

In addition, the slider ring is inserted inside the outer ring, and the anchor head is inserted inside the slider ring to be connected in a straight line. The inner wall of the outer ring is placed on the guide provided on the outer circumferential surface of the slider ring and the inner wall of the slider ring. The fittings are configured to respectively fit the guides provided on the outer circumferential surface of the anchor head, and the outer rings, the slider rings, and the alignment of the anchor heads can be aligned.

Then, when the earth anchor is installed in the ground hole formed in the ground, wedge force is generated by the attraction force of the anchor, and the anchoring force of the anchor is greatly increased.

The dismantleable anchor body of the present invention can also be used by combining the outer ring and the slider ring (wedge-shaped inner body) as described above, and if necessary, the wedge-shaped inner body can be assembled with the anchor body of the present invention, and the dimensions and It can also be applied by changing the shape.

Hereinafter, the process of installing and dismantling the temporary ground anchors based on the above structural features will be described for each process.

1. Anchor body assembly process

The lower cover 41 having the stopper 41a on the cylinder 10 is fastened using the bolts 42. Then, in the case where the locking groove 11a or the seating jaw is formed on the inner circumferential surface of the central through hole 11 of the cylinder 10 instead of the integral locking jaw 11b, a fitting member is fitted. Subsequently, the dismantling tension member W pushed through the lower cover 41 is inserted into the anchor dismantling center member 30 and the insert 32 and compressed to disassemble the tension member W for anchor dismantling center member ( After binding to 30), the anchor dismounting center member 30 is placed on the locking jaw 11b of the cylinder 10. Subsequently, spacers 35 are inserted around the center member 30 for anchor disengagement according to the arrangement of the close contact grooves 15, and the lower end thereof contacts the upper surface of the separation catching wall 14, and the contact surface 35c is the center for dismantling the anchor. Reclining against the outer peripheral surface of the ash (30).

In this way, since the insertion space of the anchor tensioning member binding cone 20 is formed in the upper portion of the outer cylinder 12 disposed radially, the anchor tensioning member binding cones 20 are inserted in this space. Then, the upper cover 40 is fastened somewhat loosely using the bolts 42. At this time, the center point of the guide holes 45 formed in the upper cover 40 is on the same axis as the center points of the assembled anchor tension member Binding cone 20, the anchor member center member 30 and each binding cone. When the tension members (W) and (W ') are bound to the (20), the tension members (W) and (W') are to pass through the guide hole 45 of the upper cover (40).

As such, after the upper cover 40 is fastened to the cylinder 10, the tension tension member W 'having the cover material removed to a predetermined length is pushed through the guide hole 45 formed in the lower cover 41 at the upper end again. Tension tension members W 'past the outer hole 12 are inserted from the bottom of the binding cone 20 upwards, and then a part of the tension tension members W' is introduced through the guide hole 45 of the upper cover 40 again. Push from the bottom of the cylinder 10 until it is exposed to the upper portion of the top cover (40). After all the tension members W and W 'are exposed over the guide hole 45 of the upper cover 40, the upper cover 40 is tightened to the cylinder 10 by tightening the bolt 42 more strongly. . Then cover the cap 50.

After completing the above process, the lower body 60 is assembled with the lower cover 41 as necessary. Then, the spacers are disposed at regular intervals so that the tension members W, W 'extending over the lower body 60 do not entangle with each other. The necessary process after that follows the example of the conventional anchoring method.

2. Insertion and Fixing Process

Subsequently, an anchor hole is cut in the ground of a construction site such as a high-rise building, an underground structure of a subway or a large structure, and a casing is inserted therein. Then, the assembled anchor body is inserted into the anchor hole. At this time, a cispipe may be used. Subsequently, a normal grouting operation is performed using high-density materials such as mortar and cement milk. At this time, when the freezing material is not freezing, the high freezing material such as mortar and cement milk is injected at high pressure while extracting the casing. After the hardening material is hardened, the tension tension member W 'exposed to the outside of the excavation hole is tensioned and fixed using a tensioner.

In this case, as shown in FIGS. 1 and 2, when the protrusion 60a is formed on the outer circumferential surface of the lower body 60, a hole 60b is formed on the outer circumferential surface of the lower body 60, and a fastening material is formed inside the lower body 60. , The lower body 60 is integrally connected to the outside of the anchoring force is increased.

In addition, in the case of using the domestic patent publication No. 87-1862 as a load-bearing body, the insertion and fixing process is performed.

And, as described above, when the anchor body is fixed to the anchor hole formed in the ground fixed by using the tension members (W), (W ') to build a continuous underground wall for the building and civil construction, and to build the building and civil construction You can do it safely.

3. Anchor dismantling process

When the underground structure of the high-rise building, subway, and other large structures is completed, when the tension member (W) and (W ') are to be removed, the tension member (W) for disassembly is fastened to the anchor member center member (30). When pulled strongly using the machine, as shown in FIG. 5, the locking jaw 11b formed in the central through hole 11 of the cylinder 10 is destroyed by the strong pressure of the anchor member center member 30 and falls to the lower side. The ash 30 and the dismantling tension member (W) bite thereof are released from the position and the anchor tension tension member binding cones 20, which were tensioned at this moment, are released in accordance with the disengagement of the center member 30 for anchor dismantling. The spacers 35, which were in contact with the outer circumferential surface of the anchor member core member 30, are directed toward the center thereof, thereby causing a stable structure to collapse.

And, as shown in Figure 6 when the anchor dismantling center material 30 is in close contact with the upper end of the stop jaw (41a) the anchor dismantling center material 30 is no longer able to progress. In this state, when the dismantling tension member W is continuously tensioned, the dismantling tension member W is slowly slipped and separated from the anchor dismantling center member 30. In this way, the dismantling tension member W is gradually separated from the anchor dismantling center member 30. And when tensioning the remaining tension tension member (W ') as shown in Figure 7 anchor tension member binding cones 20 are caught in the outer hole 12 formed in the separation engaging wall 14 of the cylinder 10 and loses its function. It will happen. At this time, the tension is continued to pull out the tension members (W), (W ') out of the anchor hole.

As described above, the dismantleable anchor body of the present invention is easy to assemble, and after assembly, it is possible to completely pull out the tension member to the ground by dismantling the binding cone regardless of the surrounding mortar, and secure the construction stability greatly by providing accurate tensile force. can do.

Furthermore, in the process of dismantling the tension member, the jamming jaw supporting the anchor dismantling member is broken by the pulling force of the dismantling tension member, and the tension member is separated by a very simple operation in which the dismantling member of the anchor member dismantling member is separated from the anchor member dismantling member. It is easy to work out, and the working time is greatly shortened, and the diameter of the cylinder can be made smaller by using the above-mentioned anchor dismantling center material, so that the workability can be improved and the manufacturing cost can be reduced. When dismantling, the tension members are not pulled out in a hurry, but are pulled out slowly from the binding cone and anchor dismantling center material, which has the advantage of completely preventing the risk of safety accidents. In addition, the shape of the anchor member center material is also simple, there is an advantage that the manufacturing of the anchor member center material is very simple and easy.

While the embodiments of the present invention have been described so far, the present invention is not limited thereto, and various embodiments which 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 (6)

A cylinder having a separating locking wall formed at an upper side of the inner circumferential surface of the body, and having a central hole formed at a lower side of the upper separating locking wall at a central portion of the body, and having a plurality of outer cylinders radially formed around the separating locking wall; An anchor dismantling center member inserted into an upper portion of the central through hole of the cylinder and provided with a friction element on an inner circumferential surface and binding to a dismantling tension member, and a plurality of anchors inserted into an upper side of the outer hole to fasten the tension member. Tension tension member binding cone, the lower cover having a stop jaw coupled to the lower end of the cylinder, and the locking jaw is formed to be fixed to the anchor material for the anchor dismantling upper portion of the inner circumferential surface of the central hole and to be broken during the dismantling process And a spacer inserted between the anchor dismantling center member and the anchor tension member binding cone, and the anchor. Cheyong central tension member and the anchor tension member and the coupling cone and top cover to prevent exit, disengageable hypothesis Ground anchor body, characterized in that is configured to protect the interior of the cylinder contains water, a cap to prevent the penetration of the mortar for. The dismountable temporary anchor body according to claim 1, wherein a lower body is fastened to the lower side of the lower cover to increase anchor resistance. 2. The disassembleable temporary anchor body according to claim 1, wherein a wedge-shaped inner body is coupled to a lower side of the cylinder. The method of claim 1, wherein the anchor material is a cylindrical sleeve, the friction element is a spiral friction portion formed by forming a spiral on the inner circumferential surface of the sleeve, an insert inserted into the sleeve and the uneven portion formed therein; And a coil spring having a sharp cross section inserted into the inner circumferential surface of the sleeve. 3. The dismountable temporary foundation anchor body according to claim 2, wherein the inner body is formed by forming a hole formed in the cylindrical circumferential wall so that the mortar filled in and out of the body is integrally formed, and / or an uneven portion for increasing frictional resistance. . In the process of dismantling the tension member, the anchoring dismantling member overcomes the pressure generated by the anchor tension tension member binding cone by the pullout force of the dismantling tension member and breaks the catching jaw. A method of dismantling a tension member, comprising: contacting to prevent movement of the anchor core member and to extract and separate the tension member from the anchor member core member.