KR101082528B1 - Packer for ground anchor and wire holding device using the same - Google Patents

Abstract

The present invention relates to an exponential packer and a stranded wire holding device employing the same, particularly a stranded wire holding device employing an exponential packer supports a stranded wire inserted into a perforated hole drilled into the ground so as to prevent collapse of the ground sidewall. A holding device, comprising: a sleeve inserted into the drilling hole and contacting an inner circumferential surface of the drilling hole; An index packer inserted into the sleeve; A bracket having a support plate supported on the ground sidewall, an insertion portion protruding from the support plate toward the sleeve side and inserted into the sleeve, and a protrusion protruding from the support plate in a direction spaced from the sleeve; A strand wire holder coupled to an upper end of the protrusion; A wedge assembly surrounding the outer circumferential surface of the strand and coupled to the strand holder, wherein the exponent packer is made of a metal material, and includes an upper plate and a lower plate fastened by bolts; An elastic body inserted between the upper and lower plates and made of a synthetic resin material elastically deformable by the fastening force of the bolt; And at least one insertion rod inserted into the elastic body in the thickness direction of the elastic body.

Description

Packer for ground anchor and wire holding device using the same}

The present invention relates to an exponential packer and a strand wire holding device employing the same, and in particular, to prevent the collapse of the ground side walls, the strands inserted into the drilled holes drilled in the ground side walls are supported in a direction corresponding to the longitudinal direction of the drill holes. The present invention relates to an index packer and a strand holding device employing the same, which maintains a uniform tensile force applied in tension and prevents underground water, foreign substances, etc. existing in the drill hole from being discharged to the outside of the drill hole.

Ground anchor is a fixing device which is essential for civil engineering or building construction, and is used for fixing various structures or buildings to the ground, or supporting walls which are installed so that the side walls of the ground formed by excavation do not collapse. It is used to fix it to the side wall.

The ground anchor is inserted into a drilled hole drilled into the ground and then fixed by a grout to firmly fix the structure, the building, or the support wall at the corresponding position.

Figure 1 schematically shows a conventional strand holding device.

As shown in Fig. 1, the ground anchor is provided to support the supporting wall 5 so that the side wall W generated by excavating the ground S does not collapse.

Forming a drilled hole 4 inclined with respect to the side wall W, inserting the strand 1 into the drilled hole 4, and grouting the inside of the drilled hole 4 through the injection pipe 3; Injecting the wire (1) to fix the inside of the drill hole (4), the wire (1) protruding outside the side wall (W) is a bracket 12, the wire holder 11, and the wedge assembly 14 Passing through, the strand wire (1) protruding from the wedge assembly 14 is pulled by a separate strand tensioner (not shown).

The strand 1 pulled from the strand tensioner 1 presses the support wall 5 toward the side wall W by a restoring force to prevent the collapse of the side wall W.

On the other hand, as time passes, underground water and foreign matters flowing out of the ground flow into the drilling hole 4, and the ground water packer 15 is drilled to prevent the underground water and foreign matters from being discharged to the outside. Insert into the hole (4).

As shown in FIG. 1, in the conventional strand wire holding apparatus 100, in order to support a strand wire that protrudes to the outside of the drilling hole 4, an H beam 16 is usually provided on the support wall 5, and A support 17 supporting the H beam 16 is installed, and the bracket 12 is fixed to the H beam 16. In addition, the strand wire holder 11 to which the wedge assembly 14 is coupled is seated on the bracket 12.

 Such a conventional strand wire holding device 100 requires a complicated additional configuration in order to support a stranded steel wire projecting out of the drilled hole 4, reducing the work efficiency, in particular the stranded wire projected from the drilled hole 4 There is a problem in that (1) is not kept equal to the longitudinal direction of the drilling hole (4).

Specifically, the strand 1 extending from the drilling hole 4 to the bracket 12 may not maintain a straight line. That is, depending on the position where the bracket 12 is placed, the strand 1 may not maintain a straight line with the longitudinal direction of the drilling hole (4). Since it is very difficult to accurately install the bracket 12 so as to be in line with the drilling hole 4, the strand 1 inserted into the bracket 12 may be bent out of the longitudinal direction of the drilling hole 4. In addition, when the stranded wire 1 in the curved state is tensioned outside the stranded wire holder 11, the tensile force is not evenly transmitted to the stranded wire 1, thereby providing a cause of unsafe construction.

In addition, the conventional strand wire holding device 100 in order to prevent leakage of underground water, foreign matters, etc. to the outside of the drilling hole (4), the water packer 15 inside the drilling hole (4) Insert

As shown in FIG. 1, the conventional water packer 15 includes a plurality of intermediate plates fastened to the upper plate and the lower plate by bolts and inserted between the upper plate and the lower plate. The upper plate, the lower plate, and the intermediate plate are made of a metal material, and underground water and foreign substances are continuously leaked between the outer circumferential surface of the upper plate, the lower plate, and the intermediate plate and the inner circumferential surface of the drilling hole to be discharged to the outside of the support wall 5 to be constructed. It causes difficulties in construction.

The present invention has been made in consideration of the above-described matters, and in order to prevent the collapse of the ground sidewall, the strands inserted into the drilled holes drilled in the ground sidewalls are supported in the direction corresponding to the longitudinal direction of the drilled holes to tension the stranded wires. It is an object of the present invention to provide a stranded wire holding device having an improved structure to maintain a uniform tensile force and to easily align the stranded wire in a direction corresponding to the longitudinal direction of the hole.

In addition, in the index packer employed in the strand holding device, an object of the present invention is to provide an index pack with an improved structure so that underground water, foreign matters, etc. in the drill hole is not discharged to the outside of the drill hole.

In the strand wire holding device employing the exponent packer according to the present invention for achieving the above object, in the strand wire holding device for supporting the strand wire inserted into the perforated hole drilled into the ground to prevent the collapse of the ground side wall, A sleeve inserted into the drilling hole and contacting an inner circumferential surface of the drilling hole; An index packer inserted into the sleeve; A bracket having a support plate supported on the ground sidewall, an insertion portion protruding from the support plate toward the sleeve side and inserted into the sleeve, and a protrusion protruding from the support plate in a direction spaced from the sleeve; A strand wire holder coupled to an upper end of the protrusion; A wedge assembly surrounding the outer circumferential surface of the strand and coupled to the strand holder, wherein the index packer is made of a metal material, and includes a top plate and a bottom plate fastened by bolts; An elastic body inserted between the upper and lower plates and made of a synthetic resin material elastically deformable by the fastening force of the bolt; And at least one insertion rod inserted into the elastic body in the thickness direction of the elastic body.

Here, the insertion rod is preferably coupled to the central portion of the elastic body.

Here, the cross section of the insertion rod is preferably circular.

Here, the length of the insertion portion is preferably shorter than the length of the protrusion.

Here, the imaginary line connecting the center of the insertion portion and the protrusion is inclined with respect to the support plate, preferably coincides with the center line connecting the center of the drilling hole.

Here, it is preferable that a hole penetrating the outer circumferential surface is formed in the protruding portion.

On the other hand, the exponent packer according to the present invention for achieving the above object is inserted into the perforated hole perforated into the ground, in the exponent packer to prevent the foreign matter inside the perforated hole, made of a metal material Upper and lower plates fastened with bolts; An elastic body inserted between the upper and lower plates and made of a synthetic resin material elastically deformable by the fastening force of the bolt; And at least one insertion rod inserted into the elastic body in the thickness direction of the elastic body.

Here, the insertion rod is preferably coupled to the central portion of the elastic body.

Here, the cross section of the insertion rod is preferably circular.

The strand wire holding device employing the exponent packer according to the present invention is a state in which the strands inserted into the drill holes are easily aligned in the direction corresponding to the length direction of the drill holes, and the strands are aligned in the direction corresponding to the length direction of the drill holes. Supported by, so that the tensile force in the tension of the strand can be transmitted uniformly to the strand.

In addition, the index packer according to the present invention is inserted into the drilling hole and provided with an elastically deformable elastic body, when the upper plate and the lower plate is fastened by the bolt and the elastic body is elastically deformed by the fastening force to expand the outer peripheral surface of the upper plate and the lower plate Underground water, foreign matters, etc. do not flow out.

In addition, the index packer according to the present invention, when the upper plate and the lower plate is fastened by the bolt by inserting the insertion rod in the elastic body, the fastening force by the bolt is transmitted to the insertion rod and the reaction force is transmitted to the stranded wire to the elastic wire to the elastic body Since it adheres firmly, the ground water, foreign matters, etc. along the outer circumferential surface of the stranded wire is prevented from flowing out to improve the elastic deformation effect inside the elastic body.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is an exploded perspective view of the strand holding device employing an index pack according to the present invention, Figure 3 is a cross-sectional view in the combined state of FIG. 4 is a view showing the main portion of FIG. 2, and FIG. 5 is a cross-sectional view taken along the line V-V of FIG.

2 and 3, the strand holding device 200 employing the exponent packer according to the present invention, the perforated hole 4 drilled into the ground (S) to prevent the collapse of the ground side wall (W) A strand wire holding device for supporting a strand wire 1 inserted into a sleeve, the sleeve 10 inserted into the drill hole 4 and contacting an inner circumferential surface of the drill hole 4 and the sleeve 10 inserted into the sleeve 10. The water packer 20, the support plate 31 supported by the ground sidewall W, and an insertion portion protruding from the support plate 31 toward the sleeve 10 and inserted into the sleeve 10 ( 32, a bracket 30 having a protrusion 33 protruding from the support plate 31 in the direction spaced apart from the sleeve 10, and the strand wire holder 40 coupled to the upper end of the protrusion 33. , Surrounding the outer circumferential surface of the strand 1, and comprises a wedge assembly 50 coupled to the strand holder 40 The index packer 20 is made of a metal material, and is inserted between the upper plate 21 and the lower plate 22 fastened by the bolt 26 and the upper plate 21 and the lower plate 22, and the bolt An elastic body 23 made of a synthetic resin material elastically deformable by a fastening force of 26, and at least one insertion rod 60 inserted into the elastic body 23 in the thickness direction of the elastic body 23; It is done.

The sleeve 10 is inserted into the drilling hole 4, the outer peripheral surface thereof is in contact with the inner peripheral surface of the drilling hole (4). The sleeve 10 is inserted into the drilling hole 4 formed inclined with respect to the ground (S). The sleeve 10 inserted into the drilling hole 4 secures the shape of the inlet side of the drilling hole 4 and prevents the inlet side of the drilling hole 4 from collapsing. The upper end of the sleeve 10 is coupled to the engaging plate (10a) is caught on the inlet side of the drilling hole (4). The locking plate 10a prevents the sleeve 10 from slipping into the drilling hole 4.

As shown in FIG. 3, the water packer 20 is inserted into the sleeve 10 to prevent underground water, foreign substances, etc. existing in the drilling hole 4 from flowing out of the drilling hole 4. To be prepared. The water packer 20 includes an upper plate 21, a lower plate 22, an elastic body 23, and an insertion rod 60.

As shown in FIG. 4, the upper plate 21 and the lower plate 22 are made of a metal material, and are fastened by using a bolt 26 and a nut 27, and the upper plate 21 and the lower plate 22. Fastening holes 21b and 22b into which the bolt 26 is inserted are formed, respectively. The elastic body 23 is formed with a fastening hole 23b through which the bolt 26 penetrates at a position corresponding to the fastening holes 21b and 22b.

In the present embodiment, the upper plate 21 and the lower plate 22 are fastened using three bolts 26, and the bolts 26 are arranged at equal intervals with respect to the upper plate 21 and the lower plate 22. . Of course, the number of bolts 26 is changeable, and even if the number is different, each bolt 36 is arranged at equal intervals so that the fastening force by the bolt 26 and the nut 27 is equal to the elastic body 23. It is desirable to ensure that the delivery.

In addition, the upper plate 21, the lower plate 22, and the elastic body 23 are formed with through holes 21a, 22a, 23a through which the strand 1 passes.

The elastic body 23 is made of a synthetic resin elastically deformed by the fastening force of the bolt 26 and the nut 27. A plurality of insertion holes 24 are formed in the elastic body 23.

In the present embodiment, one insertion hole 24 is formed in the center of the elastic body 23, three is formed in the edge portion at equal intervals. Of course, in the present embodiment, the insertion hole 24 is formed in both the center portion and the edge portion, but may be selectively formed in the center portion or the edge portion.

That is, the insertion hole 24 may be formed only at the center portion or only at the edge portion. However, in the case where a plurality of insertion holes 24 are formed at the edges, the insertion holes 24 are preferably arranged at equal intervals so that the elastic body 23 is uniformly elastically deformed.

The insertion rod 60 is provided to further closely contact the strand 1 inserted into the elastic body 23 with the through hole 23a. The insertion rod 60 is inserted in the thickness direction of the elastic body 23.

In the present embodiment, the insertion hole 24 formed in the elastic body 23 has a circular cross section, and the cross section of the insertion rod 60 also corresponds to the cross section of the insertion hole 24 is also circular.

When the upper plate 21 and the lower plate 22 are tightened by the fastening force of the bolt 26 and the nut 27, the elastic body 23 receives the fastening force, and the insertion rod 60 reacts to the fastening force. The force is distributed to the through-hole 23a side through which the strand 1 passes, and thus the wire-line 1 is in close contact with the inner circumferential surface of the through-hole 23a. The circular cross section of the insertion rod 60 is intended to effectively distribute the reaction force of the clamping force to the through hole 23a. In addition, since the insertion rod 60 that receives the fastening force between the bolt 26 and the nut 27 transmits the reaction force of the physical force to the elastic body 23, the elastic deformation effect of the elastic body 23 is remarkably improved. .

The bracket 30 is configured to include a support plate 31, an insertion portion 32, and a protrusion 33.

The support plate 31 is supported on the side wall (W) of the ground (S). In general, since the support wall 70 is formed by pouring concrete or the like on the side wall W of the ground S, the support plate 31 may be supported on the side wall of the ground S on which the support wall 70 is formed. .

The insertion portion 32 extends from the support plate 31 toward the sleeve 10 and is inserted into the sleeve 10. By inserting the insertion portion 32 of the bracket 30 into the sleeve 10, the bracket 30 is not provided with a separate support 17, such as the conventional strand wire holding device 100, the support wall 70 Can be supported).

The protrusion 33 protrudes from the support plate 31 in a direction spaced apart from the sleeve 10. The protrusion 33 protrudes longer than the extension length of the insertion part 32. The length of the protruding portion 33 is formed longer than the length of the inserting portion 32, so as to sufficiently secure a section for supporting the stranded line 1 extending to the outside of the side wall W of the ground S. In addition, a free space for a post process, for example, a process of holding, pulling, etc. the stranded wire 1 is secured.

In the present embodiment, the insertion portion 32 and the protrusion 33 is made of a hollow pipe shape, the strand wire 1 passes through the inside thereof. The protrusion 33 accommodates the stranded wire 1 protruding out of the drilled hole 4, so that the stranded wire 1 protruding out of the drilled hole 4 is not bent and is fixed in the longitudinal direction of the drilled hole 4. Act as a guide.

By aligning the strands 1 in a direction coinciding with the longitudinal direction of the perforation hole 4, the tensile force transmitted to the strands 1 during tensioning of the strands 1 is distributed evenly. If the strand 1 is stretched in a state in which the strand 1 is bent, the tensile force may not act evenly, causing deformation of the exponent packer 20, and thus, underground water, through the exponent packer 20, may be caused. Foreign substances, etc. may cause leakage to the outside.

In this embodiment, the imaginary line connecting the center of the insertion portion 32 and the protrusion 33 is inclined with respect to the support plate 31. The support plate 31 is in contact with the side wall (W) or the support wall 70 of the ground (S), the insertion portion 32 and the protrusion 33 is a perforated hole 4 formed oblique to the ground (S) It is formed to correspond to the longitudinal direction of the). Thus, the imaginary line connecting the center of the insertion portion 32 and the protrusion 33 is coincident with the center line connecting the center of the drilling hole (4). Of course, when the drilling hole 4 is formed perpendicular to the side wall (W) of the ground (S), the insertion portion 32 and the protrusion 33 may be formed perpendicular to the support plate 31. For example, in the so-called buoyancy anchoring construction in which anchors are installed in the drilling holes 4 drilled perpendicularly to the bottom surface of the ground S, the insertion portion 32 and the protrusion 33 are supported by the support plate 31. It is formed perpendicular to the. In any case, the imaginary line connecting the center of the insertion part 32 and the protrusion part 33 is preferably formed so that it may correspond to the longitudinal direction of the perforation hole 4.

In addition, the protrusion 33 has a hole 34 penetrating the outer peripheral surface. In general, the exponent packer 20 is divided into a permanent fixation packer used for a permanent anchor anchor, a removable exponent packer used for a removable anchor. The hole 34 formed in the protrusion 33 is utilized when the strand holding device 200 employing the exponent packer according to the present invention is used for a removable anchor.

That is, in the case of a removable anchor, it is necessary to dismantle the strand wire holder 40 and the bracket 30, for this purpose, the strand wire (1) protruding out of the drill hole (4) should be cut. In this case, the strands 1 passing through the protrusions 33 may be easily cut using the holes 34. When the strands 1 are cut, the strand holders 40 and the brackets 30 may be easily disassembled. can do.

The strand wire holder 40 is coupled to the upper end of the protrusion 33 so as to grip the strand wire 1 protruding from the protrusion 33 of the bracket 30. In addition, the wedge assembly 50 is coupled to the strand wire holder 40 in a state surrounding the outer peripheral surface of the strand wire (1).

As shown in FIG. 2, the wedge assembly 50 has a funnel shape in which the inner diameter thereof narrows toward the protrusion 33. The strand holder 40 is formed with a hole to which the wedge assembly 50 is coupled, and the shape of the hole corresponds to the outer shape of the wedge assembly 50. The configuration of the wedge assembly 50 is a general configuration, the detailed description thereof will be omitted.

Hereinafter, the operation of the stranded wire holding device 200 employing the exponent packer according to the above configuration will be described in detail.

First, as shown in FIG. 3, the sleeve 10 is inserted into the drilling hole 4, and the index packer 20 is inserted into the sleeve 10. At this time, grout is injected into the inside of the drilling hole 4, and the end of the strand 1 is in a fixed state.

Subsequently, in order to secure the tightness between the still water packer 20 and the sleeve 10, the top plate 21 and the bottom plate 22 of the still water packer 20 are firmly bolted. The upper plate 21, the elastic body 23, and the lower plate 22 of the water packer 20 are inserted into the sleeve 10 in a state of being loosely fastened by the bolt 26 and the nut 27, thereby securing closeness. In order to achieve this, it is preferable to bolt the bolt 26 and the nut 27 to the outside of the drilling hole 4 more firmly with a suitable tool.

As shown in Fig. 5, the elastic body 23 is expanded in the lateral direction so as to be in intimate contact with the inner circumferential surface of the sleeve 10. As shown in FIG.

Then, each bolt 26 connected to the upper plate 21 is rotated a predetermined number of times so that the outer circumferential surface of the elastic body 23 is evenly expanded. For example, when rotating five times, it is preferable to rotate all five times with respect to the three bolts 26 employ | adopted in this embodiment.

In addition, if one bolt 26 is rotated five times at a time, the elastic body 23 adjacent to the rotating bolt 26 may first be excessively expanded, causing uneven expansion of the elastic body 23. Preferably, the bolts 26 are first rotated to induce primary expansion, and each of the bolts 26 is rotated three times to induce secondary expansion so that the elastic body 23 is uniformly inflated.

In addition, the insertion rod 60 inserted into the elastic body 23 is further in close contact with the strand (1) to the through hole (23a) when the bolt 26 is rotated. Specifically, when the upper plate 21 and the lower plate 22 are tightened by the fastening force of the bolt 26 and the nut 27, the elastic body 23 receives a force that expands in the lateral direction, and the fastening force is the insertion rod 60. ), And the reaction force of the transmitted fastening force is dispersed to the adjacent through hole 23a side.

The dispersed reaction force makes the strand 1 more closely in contact with the through hole 23a, and the elastic deformation effectively occurs inside the elastic body 23 as well. In particular, since the cross section of the insertion rod 60 employed in the present embodiment is circular, the fastening force transmitted to the insertion rod 60 is distributed evenly in the circumferential direction of the outer circumferential surface of the insertion rod 60.

Subsequently, the bracket 30 manufactured according to the inclination degree of the drilling hole 4 is inserted into the drilling hole 4. The insertion portion 32 of the bracket 30 contacts the inner circumferential surface of the sleeve 10 inserted into the drilling hole 4 to support the bracket 30.

At this time, the insertion portion 32 of the bracket 30 is inserted into the sleeve 10, so that the bracket 30 can be supported on the side wall (W) or the support wall 70, the same as the conventional separate support 17 The bracket 30 may be supported on the side wall W or the support wall 70 of the ground S without the structure.

The strand 1 projecting to the outside of the drilling hole 4 passes through the insertion portion 32 and the protrusion 33. Since the insertion portion 32 and the protrusion 33 of the bracket 30 extend in a direction coinciding with the longitudinal direction of the drilling hole 4, the insertion portion 32 and the protrusion 33 of the bracket 30 are The stranded wire 1 protruding to the outside of the drilling hole 4 is supported while guiding in the longitudinal direction of the drilling hole 4. When the strand wire 1 is tensioned using a strand tension device (not shown), a tensile force is uniformly transmitted to the strand wire 1 extending in correspondence with the longitudinal direction of the perforation hole 4.

Subsequently, an outer circumferential surface of the strand wire 1 protruding through the protrusion 33 is coupled to the strand wire holder 40 while the wedge assembly 50 is wrapped to support the strand wire 1.

Subsequently, the stranded wire 1 is tensioned using a stranded wire tensioning device, and retensioned when it is necessary to retension the tensioned stranded wire 1 after a lapse of time.

In addition, in the case where the strand wire holding device 200 employing the exponent packer according to the present invention is used for the construction of the removable anchor, it is necessary to dismantle the bracket 30 and the strand wire holder 40. The strand wire 1 is cut through the holes 34 of 33 to dismantle the bracket 30 and the strand wire holder 40.

As such, the strand wire holding device 200 employing the exponent packer according to the present invention supports the strand wire 1 protruding from the drill hole 4 while maintaining a straight line corresponding to the longitudinal direction of the drill hole 4, The tensile force is to be transmitted uniformly during the tension of the strand (1).

In addition, the bracket 30 inserted into the sleeve 10 allows the strand 1 to be easily held in a straight line.

In addition, while the conventional strand wire holding device 100 requires a large number of additional components for holding the strand 1, the strand wire holding device 200 employing the index packer according to the present invention uses a bracket 30. Holding the strand wire 1 by inserting it into the sleeve 10 and engaging the strand wire 1 extending from the protrusion 33 of the bracket 30 to the strand wire holder 40 and the wedge assembly 50. Since it can be carried out, since the holding of the strand (1) can be performed relatively simply and easily, it provides an effect of simplifying the construction to shorten the working time.

In addition, the index packer 20 according to the present invention is provided with an elastically deformable elastic body 23 to secure the tightness between the sleeve 10 and the elastic body 23, the underground water, foreign matter present in the drilling hole (4) Prevent back leaks.

In particular, since the insertion rod 60 is inserted into the elastic body 23, the stranded wire 1 penetrating the elastic body 23 more tightly to the through hole 23a by using the reaction force against the fastening force of the bolt 26. By adhering closely, and promoting elastic deformation inside the elastic body 23, it provides an effect of preventing underground water, foreign matters, and the like from leaking out through the through holes 21a, 22a, and 23a. This will be described in detail with reference to FIGS. 6 and 7 below.

6 and 7 show a simulation simulation of the degree of elastic deformation of the elastic body according to whether the insertion rod is inserted.

FIG. 6 shows a numerical analysis result by Finite Element Analysis in a state where the insertion rod 60 is not inserted into the elastic body 23. FIG. 7 shows the insertion rod 60 in the elastic body 23. FIG. Shows the results of numerical analysis by the finite element analysis method with. 7 shows the simulation result of inserting the insertion rod 60 into the center of the elastic body 23. The part shown in red is the part where elastic deformation is activated, and the part shown in blue is the part where elastic deformation is not activated.

As shown in FIG. 6, in the state where the insertion rod 60 is not inserted, the fastening force of the bolt 26 and the nut 27 is transmitted only in the vicinity of the upper plate 21 and the lower plate 22, so that the elastic body 23. It can be seen that the elastic deformation of) is induced. In the vicinity of the middle of the elastic body 23, almost no elastic deformation occurs. 6, the red color on the right side is the portion adjacent to the upper plate 21, and the red color on the left side is the portion where the lower plate 22 is located. As shown in Fig. 6, it can be seen that the portion adjacent to the upper plate 21 has a greater degree of elastic deformation than the portion adjacent to the lower plate 22.

On the other hand, as shown in Figure 7, when the insertion rod 60 is inserted into the elastic body 23, since the red color is widely distributed near the middle of the elastic body 23, the elastic deformation near the middle of the elastic body 23 It can be seen directly that this is activated. By inserting the insertion rod 60, the elastic deformation effect is remarkably improved. And, according to the simulation result of FIG. 7, it can be seen that relatively little elastic deformation occurs where the bolt 26 and the nut 27 are located. By using this, the positions of the bolt 26, the nut 27, and the insertion rod 60 may be appropriately changed to adjust the degree and position of elastic deformation of the elastic body 23.

6, since the elastic deformation degree of the elastic body 23 is large in the vicinity of the upper plate 21, when the insertion rod 60 is smaller than the thickness of the elastic body 23 and disposed close to the upper plate 21 side, Fastening force concentrated in the vicinity of the upper plate 21 is effectively transmitted to the insertion rod 60 can further improve the elastic deformation effect of the entire elastic body (23).

In the above, the present invention has been described in detail with reference to preferred embodiments, but the present invention is not limited to the above embodiments, and many modifications can be provided without departing from the scope of the present invention. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

1 is a view schematically showing a conventional strand wire holding device;

Figure 2 is an exploded perspective view of a strand wire holding apparatus employing an index packer according to the present invention,

3 is a cross-sectional view in the coupled state of FIG.

4 is a view showing an extract of the main part of FIG.

5 is a cross-sectional view taken along the line VV of FIG. 4;

6 and 7 are diagrams simulating the degree of elastic deformation of the elastic body according to whether the insertion rod is inserted.

<Explanation of symbols for the main parts of the drawings>

10 ... Sleeve 20 ... Square Packer

21 ... top 22 ... bottom

23 ... elastomer 21a, 22a, 23a ... through hole

21b, 22b, 23b ... Fasteners 24 ... Inserts

26 ... bolt 27 ... nut

30 ... bracket 31 ... support plate

32 ... Insert 33 ... Protrusion

34 ... hole 40 ... strand holder

50 ... Wedge assembly 60 ... Insertion bar

Claims (9)

In the strand wire holding device for supporting the strand wire inserted into the drilled hole drilled into the ground to prevent the collapse of the ground side wall, A sleeve 10 inserted into the drilling hole 4 and contacting an inner circumferential surface of the drilling hole 4; An index packer 20 inserted into the sleeve 10; A support plate 31 supported on the ground side wall, an insertion portion 32 protruding from the support plate 31 toward the sleeve 10, and inserted into the sleeve 10, and from the support plate 31. A bracket 30 having a protrusion 33 projecting in a direction away from the sleeve 10; A strand wire holder 40 coupled to the upper end of the protrusion 33; And a wedge assembly 50 surrounding the outer circumferential surface of the strand wire and coupled to the strand wire holder 40. The exponent packer 20, An upper plate 21 and a lower plate 22 made of a metal material and fastened by bolts 26; An elastic body 23 inserted between the upper plate 21 and the lower plate 22 and made of a synthetic resin material elastically deformable by the fastening force of the bolt 26; And And at least one insertion rod (60) inserted into the elastic body (23) in the thickness direction of the elastic body (23). The method of claim 1, The insertion rod (60) is a wire strand holding device employing an index packer, characterized in that coupled to the central portion of the elastic body (23). The method of claim 1, The cross-section of the insertion rod 60 is a wire strand holding device employing an exponent packer, characterized in that the circular. The method of claim 1, The length of the insertion portion 32 is a strand holding device employing an exponent packer, characterized in that shorter than the length of the protrusion (33). The method of claim 1, An imaginary line connecting the center of the insertion portion 32 and the protrusion 33 is inclined with respect to the support plate 31 and coincides with a center line connecting the center of the drilling hole 4. Steel wire holding device adopts. The method of claim 1, The projecting portion 33, the wire holding apparatus employing a water exponent packer, characterized in that a hole (34) penetrating the outer peripheral surface. In the water-proof packer is inserted into the perforated hole drilled into the ground, to prevent foreign substances in the perforated hole to leak, An upper plate 21 and a lower plate 22 made of a metal material and fastened by bolts 26; An elastic body 23 inserted between the upper plate 21 and the lower plate 22 and made of a synthetic resin material elastically deformable by the fastening force of the bolt 26; And And at least one insertion rod (60) inserted into the elastic body (23) in the thickness direction of the elastic body (23). The method of claim 7, wherein The insertion rod (60) is an index packer, characterized in that coupled to the central portion of the elastic body (23). The method of claim 7, wherein Cross section of the insertion rod 60 is an exponent packer, characterized in that the circular.

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