KR200428250Y1 - A ground anchor of removal wire - Google Patents

Abstract

  The present invention does not apply force directly to the tension member is fixed to the wedge, when the tension member is rotated in one direction by using a tool or the like, the wedge is installed in the operating member is moved while rotating, the wedge supporting member provided at the bottom It is aimed to be removed from the operating member by the radial expansion around the tightening ring to the tension member is free to remove the tension member without a large force.

 The present invention for achieving the above object is formed in the upper portion of the space is opened, the lower portion is formed in the communication hole and the insertion hole is inserted into the tension member, the main body formed with a screw thread on the upper outer peripheral surface, the inner peripheral surface of the main body An actuating member installed in a seating hole penetrating therein, and a wedge seated in the seating hole of the actuating member and divided into a plurality of parts and connected to each other by a fastening ring; It is provided with a support member is formed in the insertion hole through which the tension material is inserted therein, and a space is formed therein and a thread is formed on the lower inner circumferential surface is characterized in that the cap is screwed to the upper portion of the main body.

 Tension, Ground Anchor, Wedge

Description

 Anchor for removal of tension member {A ground anchor of removal wire}

1 is a cross-sectional view showing a removal anchor body having a conventional dismantling means.

Figure 2 is an exploded perspective view showing an anchor body for removing the tension material according to the present invention.

Figure 3 is a cross-sectional view showing the bonded state of the anchor member for removing the tension material according to the present invention.

Figure 4 is a cross-sectional view showing a state in which the anchoring member for removing the tension member according to the present invention, the fixing load to the tension member.

Figure 5 is a cross-sectional view showing a state in which the tension member is removed to remove the tension member according to the present invention, the tension member removal anchor body.

[Description of Symbols for Main Parts of Drawing]

1 anchor body 10 body

12, 52: space portion 14, 42, 33: insertion hole

16, 19, 26, 54: thread 18, 24: step

20: operating member 22: seating hole

30: wedge 31: ring insertion groove

32: tightening ring 34: tooth

40: support member 44: protrusion

50: cap 60: tension member

70: packing

 The present invention relates to an anchor body for removing a tension member, and more particularly, a tension member capable of quickly and conveniently removing a tension member fixed to a wedge by an operation of an operation member screwed to a body of a ground anchor. It relates to an anchor body for removal.

In general, the ground anchoring method is a method mainly used in civil works, such as earthquake construction, tunnel shaft recognition, stonework and retaining wall reinforcement. The hole is drilled in the ground at the location where the ground anchor is to be installed, and a grout hose and a tension member are inserted into the hole, and then grout is injected into the hole through the grout hose. When the curing is combined with the load bearing body, the anchor is fastened to the other end of the tension member and the tension member is pulled with a tensioner to reinforce the soft ground by pulling the grout and the ground surface.

The application of the ground anchor method has advantages such as effective construction management and shortening of construction in urban construction. However, the excavation equipment is installed due to the installation of a tension member that has about 6 times the strength per unit cross-sectional area compared to the strength of general reinforcing bars in the future construction of adjacent areas. And loss of drilling equipment and construction delay. In order to solve this problem, an anchor was developed and used to remove the tension member in accordance with the construction process after completion of the excavation work, this is a tension member removal ground anchor.

As a related art for such temporary ground anchors, Korean Utility Model Registration No. 20-277731, "Removing Anchor Body with Disassembling Means", has been interposed.

However, the removal anchor body having such a dismantling means is, as shown in Figure 1, in the removal anchor body consisting of a lower body, a tension member, the removal anchor body is a cylinder 100, expansion spring 120 And a three-split wedge 130, a compression spring 140, and a cap 150, wherein the cylinder 100 is open and closed upwards and has a tapered hollow portion of a lower light cross section. Screws are provided on the circumferential surface of the narrow diameter of the upper end and the optical diameter of the lower end of the diameter, and the extension spring 120 is formed to a diameter of the extent including the tension member 160, the three-segment wedge 130 is the same shape The chain split wedge is composed of three wedges, open and up and down, the outer diameter is a trapezoidal cylindrical body in the cross-sectional view of the lower light bar, a band-shaped groove 132 is formed on the outer peripheral surface of the lower end to the groove 132 Wedge fixing ring 134 is installed, the inner hollow A screw is formed on the main surface, and a stop plate 136, which is a circular plate body, is provided at a lower end thereof, and the compression spring 140 is formed of a circular spring shape having an outer diameter equal to the outer diameter of the lower end of the three-split wedge, and the cap 150 Silver is a cylindrical body whose upper side is opened and the lower side is closed, and a screw is provided on the upper outer peripheral surface.

Removal anchor having a dismantling means configured as described above is a compression spring 140 provided on the upper side in the state in which the tension member 160 is bitten by the wedge 130 to push the upper portion of the wedge 130, the cylinder ( 100) close contact with the upper end of the inner tapered hollow portion is to bind the tension member 160.

In this state, in order to remove the tension member 160, when a strong force is momentarily added in the upward direction of the saddle 160, the wedge 130 is moved downward while adding downward force to the compression spring 140. At this time, the upward direction is opened in the centrifugal direction by the action of the wedge fixing ring 134, the compression spring 140 received the force from the wedge 130 to lower the wedge 130 back to the lowermost by the elastic force again do. In this process, the expansion spring 120 provided between the upper end of the upper end of the cylinder 100 and the upper end of the wedge 130 is inserted into the wedge 130 by the elastic force in the state where the wedge 130 is opened. It is possible to remove the tension member 160 by holding.

However, the above conventional technologies have the following problems.

When the force is applied to the tension member as described above, the tension member is hit by a hammer or the like to move, so that the impact caused by the impact, such as the wedge and the stopper plate breakage occurred, there was a problem that the tension member can not be easily removed.

In addition, when the wedge is moved upward by applying a strong force to the tension member, the compression spring is moved while the wedge is pushed downward by the compression force of the compression spring. When the extension spring is torsion occurs by the compression of the compression spring is held there is a problem that the tension member can not be easily removed.

In the related art, in order to easily remove the tension member, the tension member is cut, and when one or two of the wire strands constituting the tension member are selected and hit with a hammer or the like, the wire strand is curled, and at this time, Since the movement distance is very short, this striking motion is performed several times, so that the remaining wires are removed from the wedge while the remaining wires are completely removed from the wedge, so that the tensile material is drawn out and removed, requiring much effort and work time to remove the tension material. There was a problem.

In addition, the removal anchor body having a conventional dismantling means is corroded while the components in the cylinder, that is, the compression spring and the expansion spring are rusted by the leakage and moisture at the time of installation, and if this gives a strong force to the tension member by this corrosion These springs are broken and problems such as the tension member cannot be easily removed.

 The present invention is devised to solve the conventional problems, the present invention does not apply force directly to the tension member is fixed to the wedge, the wedge is installed when turned in one direction while holding the tension member using a tool, etc. The member is moved downward while rotating, and the wedge is radially expanded around the tightening ring while being separated from the operating member by the supporting member provided at the bottom so that the tension member is free to remove the tension member without applying great force. Its purpose is to.

 The anchor body of the present invention for achieving the above object is formed in the upper space is formed in the upper portion, the lower portion is formed in the communication hole is inserted into the insertion hole is inserted into the tension member, the main body formed with a screw thread on the upper outer peripheral surface, and An actuating member installed on an inner circumferential surface of the main body to be movable and having a seating hole penetrated therein; a wedge seated in the seating hole of the actuating member and divided into a plurality of parts and connected to each other by a fastening ring; and a space of the main body The support member is provided at the bottom of the lower portion and the insertion member is formed to be inserted into the tension member to penetrate therein, and a space is formed therein and a screw thread is formed on the lower inner circumferential surface is characterized in that the cap is screwed to the upper portion of the main body.

Here, the inner peripheral surface of the main body and the outer peripheral surface of the operating member to form a screw thread, characterized in that the screw coupled to flow with the operating member.

Further, it characterized in that the stepped portion is formed in the space portion of the main body.

And, the seating hole of the operating member is formed to be inclined in the shape of a cone, characterized in that the step is formed on the outer peripheral surface.

On the other hand, the support member is characterized in that the protrusion formed to protrude upward.

In addition, the fastening portion of the main body and the cap is characterized in that the packing is further provided.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the anchor member for removing the tension material according to the present invention will be described in detail.

Figure 2 is an exploded perspective view showing the anchor member for removing the tension material according to the present invention, Figure 3 is a cross-sectional view of the bonded state showing the anchor member for removing the tension material according to the present invention.

As shown in Figures 2 and 3, the anchor body 1 of the present invention is formed with a space portion 12 is opened in the upper portion, the lower portion in communication with the space portion 12 is inserted into the tension member 60 Insertion hole 14 is formed, the main body 10 is formed with a screw thread 16 on the upper outer peripheral surface.

In addition, a step 18 is formed on the inner peripheral surface of the space 12 of the main body 10, and a thread 19 is formed on the step 18.

Here, the step 18 formed in the space portion 12 of the main body 10 forms a screw thread 19 by forming a small inner diameter up to a predetermined position on the lower side based on the upper opening, and the inner diameter of the lower end portion is It is preferable to form wider than the inner diameter of the upper portion.

In addition, the insertion hole 14 formed at the lower end of the main body 10 may be formed to be stepped from the outside of the main body 10 so that the tube 62 covering the tension member 60 may be fitted therein.

The inner circumferential surface of the main body 10 is provided with an operating member 20 which is installed to be movable and has a seating hole 22 penetrating therein.

Preferably, the center of the outer circumferential surface of the operating member 20 has an outer diameter of the upper portion and a lower portion of the operation member 20 to increase the outer diameter so that the stepped portion 24 is formed on the boundary surface, and the main body is formed on the outer circumferential surface of which the outer diameter is largely formed on the lower portion. A thread 26 screwed to the thread 19 formed in the space portion 12 of the 10 is formed.

This is because when the operating member 20 is screwed to the inside of the main body 10 to turn the operating member 20 in one direction, the operating member 20 is separated from the thread 19 of the main body 10 and the main body 10 The inner diameter of the lower portion of the space portion 12) can be freely moved freely in a space formed.

Here, it is preferable that the seating hole 22 of the operation member 20 is formed in a tapered shape having a wide upper portion and a narrow lower portion.

 It is seated in the seating hole 22 of the operating member 20 is divided into a plurality of ring insertion groove 31 is formed, the fastening ring 32 is inserted into the ring insertion groove 31 is fixed and connected to each other, An insertion hole 33 into which the tension member 60 is inserted and fixed is formed therein, and a plurality of teeth 34 are formed on an inner circumferential surface of the insertion hole 33, and an outer circumferential surface of the seating hole 22 of the operating member 20. The wedge 30 is provided so that the same taper as is formed.

 Support member provided on the bottom surface of the space portion 12 of the main body 10 is formed with an insertion hole 42 through which the tension member 60 is inserted and protruding protruding hole 44 protruding to the top. 40 is provided.

Here, the support member 40 may be formed integrally with the main body 10 by forming the insertion hole 42 of the support member 40 to communicate with the lower insertion hole 14 of the main body 10. .

In addition, only the protrusion 44 of the support member 40 may be integrally formed by communicating with the insertion hole 14 of the main body 10.

On the other hand, the support member 40 may be fixed to the bottom surface of the space portion 12 of the main body 10 by using a separate fixing means penetrating from the outer lower end of the main body 10.

 In addition, a space portion 52 is formed therein, and a screw thread 54 is formed on the lower inner circumferential surface thereof so that the cap 50 is screwed to the upper portion of the main body 10.

Here, the main body 10 and the cap 50 is preferably further provided with a packing 70 for preventing leakage in the fastening portion screwed.

This prevents leakage to the inside of the main body 10 to prevent the components in the main body 10 from being corroded by the leak.

Referring to the installation and removal operation of the anchor body of the present invention configured as described above are as follows.

First, supporting the tension member 60 inserted into the insertion hole 14 of the main body 10 in a state in which the operating member 20 is screwed to the thread 19 formed in the space portion 12 of the main body 10. Insert the tension member 60 through the insertion hole 42 of the member 40 so as to pass therethrough, and insert it through the seating hole 22 of the operation member 20 to protrude upward, and finally the operation member. The wedge 30 is coupled to the end of the tension member 60 penetrating the 20, and the wedge 30 is immersed in the operating member 20 so that the tension member 60 is primarily in the wedge 30. To be combined.

At this time, before the tension member 60 is inserted into the insertion hole 14 of the main body 10, the tube 62 is first inserted to complete the coupling of the tension member 60 to the anchor body 1, and then the tube 62 is the main body ( The tension member 60 is not fixed by the grout even after the anchor body 1 is fixed in the ground by being seated in the seating hole 17 of 10) to facilitate the separation of the tension member 60.

Subsequently, the cap 50 is screwed to the main body 10, a load bearing body consisting of a grout tube and a tension member is prepared and inserted into a hole in the ground drilled by a perforator, and then the grout (concrete) is inserted through the grout tube. When the injected grout is bonded and cured with the lower body, the other end of the tension member 60 is fastened to the anchor installed in the wall, and the tension member 60 is pulled by the tensioner to pull the grout and the ground as well as the tension member 60. Install it as shown in Figure 4 to work.

At this time, the tension member 60 pulled by the tensioner is moved to the seating hole 22 of the operating member 20, such as the wedge 30, that is, the wedge 30 is tapered seating hole of the operating member 20 While being in close contact with 22, the tension member 60 is moved to grip the state, so that the wedge 30 more firmly grips the tension member 60, thereby completing the installation.

Next will be described the operation of removing the tension member installed in the ground.

In order to remove the tension member 60 installed in the ground, the tension member 60 is first cut, and when the tension member 60 is turned and rotated in one direction while giving a slight force to the outside, the inner peripheral surface thread 19 of the body 10 The operating member 20, which is screwed on), is moved downward while being released.

At this time, the tension member 60 may be rotated in one direction without cutting in some cases, but it is preferable to cut the tension member 60 for easy operation.

When the tension member 60 is turned in one direction, the operating member 20 is completely released from the inner circumferential surface thread 19 of the main body 10 at some point, and in this state, when the tension member 60 is continuously pulled outward. The actuating member 20 is moved toward the insertion hole 14 of the main body 10, and the protrusion 44 of the supporting member 40 is inserted into the seating hole 22 of the actuating member 20. .

At this time, when the projection 44 of the support member 40 is fitted into the seating hole 22 of the operating member 20 of the wedge 30 is tightly fixed to the seating hole 22 of the operating member 20 The wedge 30 is pushed while supporting the bottom surface so that only the operation member 20 is continuously moved in the stopped state.

When the wedge 30 is pushed while supporting the lower end, the wedge 30 is separated from the seating hole 22 of the operation member 20, and the wedge 30 is separated from the lower part of the tightening ring 32. Within the range allowed by the seating hole 22 of the operating member 20 is radially expanded as shown in FIG. 5 so that the force holding the tension member 60 is lost.

As described above, the tension member 60 is freed from the wedge 30 holding the tension member 60 firmly, so that the tension member 60 can be easily removed without great effort.

 In the above description of the preferred embodiment of the anchor member for removing the tension material according to the present invention, the present invention is not limited to this, and the present invention is not limited to the claims and the detailed description of the invention and various modifications within the scope of the accompanying drawings It is possible to implement and this also belongs to this invention.

 The present invention configured as described above can be moved while unwinding the operating member screwed to the main body by turning the tension member in one direction, so that the tension member can be easily removed, thereby providing the effect of removing the tension member without great effort.

In addition, the present invention does not impact the tension member with a hammer or the like as in the prior art, and the present invention only needs to be rotated in one direction without effort while holding the tension member, so that anyone can easily and reliably remove the tension member. do.

Claims (6)

 A space portion having an upper portion opened therein, an insertion hole into which a tension member is inserted in communication with the space portion at the lower portion, and a main body having a thread formed on the upper outer circumferential surface thereof;  An actuating member installed on an inner circumferential surface of the main body and having a seating hole penetrating therein;  Wedges are seated in the seating hole of the operating member and are divided into a plurality formed and connected to each other by a fastening ring, A support member provided at a lower portion of the space of the main body and having an insertion hole formed therein; A space member is formed therein and a thread is formed on the lower inner circumferential surface of the tension member removal anchor, characterized in that consisting of a cap screwed to the upper portion of the main body.  The method of claim 1, Anchor for removing tension member, characterized in that the thread formed on the inner circumferential surface of the main body and the outer circumferential surface of the actuating member, respectively, so that the actuating member can flow.  The method of claim 2, A tension member for removing the anchor member, characterized in that the stepped portion is formed in the space portion of the main body.  The method of claim 2, The seating hole of the operating member is formed to be inclined in the shape of a cone, the anchor member for removing the tension member, characterized in that the step is formed on the outer peripheral surface.  The method of claim 1, The support member is an anchor body for removing the tension member, characterized in that the protrusion formed protruding upward.  The method of claim 1, A tension member for removing the tension member, characterized in that the packing is further provided in the fastening portion of the main body and the cap.

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