KR100570270B1 - Spacing apparatus for construct of earth anchor - Google Patents

Abstract

The present invention is installed so as to be in surface contact with the lower portion of the anchoring device 10 of the earth anchor formed with a wedge member insertion hole 11 in the core portion, the pressing device 200 formed with a tension member through-hole 201 in the core portion and It is mounted between the lower support plate 210 formed with the tension member through-hole 211, and when the tension member 1 is tensioned by the pressing device 200, a space between the fixing unit 10 and the lower support plate 210 is predetermined. A spacing holding unit 110 which maintains a spacing such that the spacing is maintained; A working space portion 120 exposed to the outside so as to remove or mount the wedge member 12 inserted into the wedge member insertion hole 11; By presenting the gap anchor mechanism for installing and re-tensioning the earth anchor, characterized in that it comprises a, to prevent the sliding of the wedge member during installation of the earth anchor to increase the tensile force applying efficiency, when re-tensioning the earth anchor The wedge member can be removed and replaced to increase the efficiency of retension.

Earth anchor, wedge, gap

Description

SPACEING APPARATUS FOR CONSTRUCT OF EARTH ANCHOR}

1 to 11 show an embodiment of the spacing mechanism according to the present invention,

1 is a perspective view of a first embodiment.

2 is a bottom view of the first embodiment;

3 is a perspective view of a second embodiment;

4 is a bottom view of the second embodiment;

Fig. 5 is a partial sectional view showing an embodiment of the second embodiment.

6 is a perspective view of a third embodiment;

7 is a bottom view of the third embodiment.

8 is a bottom view of the fourth embodiment;

9 is a perspective view of a fifth embodiment.

10 is a side view showing an embodiment of the fifth embodiment;

Fig. 11 is a partial sectional view showing an embodiment of the sixth embodiment.

12 to 17 show a conventional structure,

12 is a partial cross-sectional view of the earth anchor structure.

13 is a perspective view of the fixing unit and the fixing plate.

14 is a perspective view of the wedge member.

15 is a side view showing a pressurized state by a hydraulic pressurizing device.

16 is a partial sectional view showing a pressurized state by a hydraulic pressurizing device.

17 is a partial cross-sectional view showing a state of the anchorage by re-tensioning work.

** Description of the symbols for the main parts of the drawings **

1: tension member 10: anchorage

11: wedge member insertion hole 12: wedge member

13: fixing plate 20: humble earth and sand

21: earth wall structure 22: drilling hole

23: support member 100: spacing mechanism

110: spacing portion 111: wing portion

112: protrusion jaw 120: working space

130: guide plate portion 131: tension member through hole

140: pressure device support plate portion 141: through hole tension member

200: pressurizing device 201: tension member through hole

210: lower support plate 211: through hole tension member

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earth anchor, and more particularly, to a spacing mechanism for enabling efficient installation and re-tensioning of the earth anchor.

12 to 16 are views for explaining the structure and installation process of a conventional earth anchor (earth anchor).

As shown, in order to prevent the collapse of the rear soil sand 20, earth wall structures 21 such as sheet piles are installed, and the like, such as steel wire in the drilled hole 22 drilled with a predetermined inclination in the rear soil sand 20. The tensioning member 1 is embedded by mortar, etc., and the upper end of the tensioning member 1 is fixed by the fixing unit 10 and the fixing plate 13 provided in the supporting member 23 such as a band.

Although various methods of fixing the upper end of the tension member 1 to the fixing unit 10 are illustrated, FIGS. 13 and 14 illustrate a wedge fixing method that is generally applied.

As shown in Figure 14, the wedge member 12 is a widely used structure configured to form a cone shape by a set of engraving members, which is a tension member (by the pressing device 200 as shown in Figure 15) After applying the tensile force to 1), as shown in Figure 13, by inserting and fixing the wedge member 12 with the tension member 1 in the wedge member insertion hole 11 of the fixing device 10, the tension member (1) serves to ensure that the tensile force applied to the entire earth wall structure 21 through the fixing unit (10).

The pressurizing device 200 may take a variety of structures, which are generally used include a hydraulic pressurizing device as shown in FIGS. 15 and 16, and a process of applying a tensile force to the tensioning member 1 by using the same. Is as follows.

The lower support plate 210 is installed on the upper surface of the fixing unit 10, and the tension member 1 penetrates the wedge member insertion hole 11 of the fixing unit 10 and the tension member through hole 211 of the lower support plate 210. To be exposed to the top.

The wedge member insertion hole 11 of the fixing unit 10 is disposed by the wedge member 12 by the engraving member, and is prevented from being separated by the lower support plate 210, the wedge member on the lower side of the lower support plate 210 Since the free space portion 212 is formed to prevent excessive pressure on the 12, the wedge member 12 is pressed to prevent the tension force application operation becomes difficult as the tension member 1 is fixed. have.

While installing the pressurizing device 200 on the upper surface of the lower support plate 210, so that the upper end of the exposed tension member 1 penetrates through the tension member through hole 201 of the core portion of the pressurizing device 200 to be exposed to the top. do.

While installing the upper support plate 220 on the upper portion of the piston 240 of the pressurizing device 200, the upper end of the exposed tension member 1 passes through the wedge member insertion hole (not shown) of the upper support plate 220 The upper portion of the tension member 1 is fixed to the upper support plate 220 by inserting the wedge member into the wedge member insertion hole.

Subsequently, when a force for pushing the piston 240 upward by the hydraulic pressure applied by the hydraulic hose 230 is applied, the pressurizing device 200 main body lowers the fixing unit 10 which is in surface contact with the lower support plate 210. As the piston 240 of the pressurizing device 200 pushes the tension member 1 fixed to the upper support plate 220 upward, a tension force is applied to the tension member 1.

When the tensile force is released after the tensile force is applied to the target value, the tension member 1 again causes the contraction to the earth wall structure 21 side. At this time, the wedge member 12 on the fixing unit 10 side starts the wedge action, and the tension is applied. The member 1 is fixed to the fixing unit 10 to prevent shrinkage thereof, and the tensile force applied to the tension member 1 is transmitted to the entire earth wall structure 21 through the fixing unit 10.

However, the application of the tensile force to the tension member 1 in this manner has been pointed out as a problem in the following points.

First, the loss of tensile force due to the sliding of the wedge member 12 is large.

As shown in FIG. 16, when the tensile force is applied to the tension member 1, the wedge member 12 is inserted into the wedge member 11 of the fixing unit 10 by the free space portion 212 of the lower support plate 210. ) Is located in a state deviating from the predetermined, and when the tension force application operation is finished to release the tension force of the pressing device 200, until the wedge member 12 is located in the insertion hole 11 to start the wedge action Since there is no means to resist the contraction of the tension member 1, the result is that the loss of the tensile force must be taken by the distance from the state in which the wedge member 12 is displaced to the insertion hole 11. .

Second, the efficiency of re-printing work was not good.

The retensioning operation is performed when the wedge member 12 has a defect and thus the tensile force of the tension member 1 decreases, or when a larger tensile force is required due to other site conditions.

According to the conventional method, even if a defect occurs in the wedge member 12, there is no way to remove the existing wedge member 12 while applying a tensile force to the tension member 1, as shown in FIG. The ring member 30 is installed on the upper surface of the existing fixing unit 10, and after the new fixing unit 10a is installed on the upper surface of the ring member 30, the tensile force is applied to the tension member 1, and the new wedge member is provided. It settled by the method by (12a).

However, this does not remove the defective wedge member 12 and thus cannot solve the underlying problem.

Furthermore, the reason for installing the ring member 30 is that the detachment of the wedge member 12 to some extent is prevented so that the re-tensioning operation is prevented by the new anchorage 10a pressing the existing wedge member 12. In order to provide a free space portion 31 to allow, even in this case, the problem remains that the existing wedge member 12 can not be prevented from sliding after completion of the re-tensioning operation.

That is, as shown in Fig. 17, even when a plurality of anchorages 10 are overlapped, the loss due to the sliding of the wedge member 12 is also increased by the number of the anchorages 10, re-tensioning by this method Expecting high efficiency in work can be overwhelming.

The present invention has been made in order to solve the above problems, to prevent the sliding of the wedge member during installation of the earth anchor can increase the tensile force applying efficiency, to remove and replace the wedge member when re-tensioning the earth anchor The purpose of the present invention is to propose a space retaining mechanism for installing and re-tensioning earth anchors to increase the efficiency of re-tensioning.

In order to achieve the object as described above, the present invention is installed so that the surface of the anchor anchor formed with the wedge member insertion hole in the core and the lower portion of the pressurization device formed with the tension member through-hole in the core and the tension member through-hole in the core It is mounted between the formed lower support plate, when the tension member is tensioned by the pressing device, the interval maintaining unit for maintaining a gap so that the predetermined distance between the anchorage and the lower support plate; A work space portion exposed to the outside to remove or mount the wedge member inserted into the wedge member insertion hole; It provides a ground anchor mechanism for earth anchor installation and re-tension, characterized in that it comprises.

In addition, the guide plate portion is coupled to the upper portion of the gap holding portion, the tension member through-hole is further formed in the core portion.

The wedge member insertion hole of the fixing member and the tension member through hole of the lower support plate are formed in a plurality of radially symmetrical structure, the plurality of tension members inserted into the wedge member insertion hole and the tension member through hole of the lower support plate is penetrated. Preferably, a plurality of tension member through-holes are formed in the guide plate.

Preferably, the gap maintaining part is coupled to the center of the guide plate part.

Preferably, the gap maintaining part further includes a wing formed to protrude into a space between the plurality of wedge member insertion holes of the anchorage.

The outer lower end of the wing portion is preferably provided with a protruding jaw portion to cover the outer peripheral surface of the anchorage.

The lower end of the protruding jaw portion is preferably formed to be in surface contact with the upper surface of the fixing plate installed in the lower portion of the fixing unit.

The gap maintaining portion may have a cylindrical shape.

The present invention is another means for achieving the above object, that is to be mounted between the anchoring hole of the earth anchor with a wedge member insertion hole formed in the core, and the pressing device formed with a tension member through-hole in the core, the lower surface of the pressing device A pressure device support plate portion which is in contact with and has a tension member through-hole formed in the core portion thereof; A spacing maintaining part coupled to the lower portion of the pressing device support plate part and maintaining a gap between the fixing unit and the pressing device support plate part at a predetermined distance when the tensioning member is tensioned by the pressing device; A work space portion exposed to the outside to remove or mount the wedge member inserted into the wedge member insertion hole; It provides a ground anchor mechanism for earth anchor installation and re-tension, characterized in that it comprises.

The wedge member insertion hole of the anchorage and the tension member through-hole of the pressing device support plate portion is formed in a plurality of radially symmetrical structure, the spacing maintaining portion is preferably coupled to the center of the pressing device support plate portion.

Preferably, the gap maintaining part further includes a wing formed to protrude into a space between the plurality of wedge member insertion holes of the anchorage.

The outer lower end of the wing portion is preferably provided with a protruding jaw portion to cover the outer peripheral surface of the anchorage.

The lower end of the protruding jaw portion is preferably formed to be in surface contact with the upper surface of the fixing plate installed in the lower portion of the fixing unit.

The gap maintaining portion may be implemented by a cylindrical structure.

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

As shown in Figure 5, the earth anchor installation and re-tension maintenance mechanism 100 according to the present invention is basically, the anchoring anchorage 10 of the earth anchor with a wedge member insertion hole 11 formed in the core, and the core portion The tension member 200 is installed to be in surface contact with the lower portion of the pressurizing device 200 in which the through hole 201 is formed, and is mounted between the lower support plates 210 having the tension member through hole 211 formed in the core. When the tension of the tension member (1) by the), the interval maintaining unit 110 for maintaining a gap so that the predetermined distance between the fixing unit 10 and the lower support plate 210; A working space portion 120 exposed to the outside to remove or mount the wedge member 12 inserted into the wedge member insertion hole 11; It is configured to include.

That is, as shown in Figure 5, during the operation of applying the tensile force to the tension member 1 by the pressing device 200, the lower support plate 210 and the pressing device 200 of the pressing device 200 by the interval maintaining unit 110 It is characterized in that the working space 120 is formed between the fixing unit 10.

Therefore, after the tensile force is applied to the tension member 1 to the target value by the pressing device 200, the operator can fully insert the wedge member 12 into the insertion hole 11 by a tool such as a spanner or a hammer. And, even after releasing the tension force by the pressing device 200, since the wedge member 12 immediately starts the wedge action, it is possible to completely prevent the loss of the tension force due to sliding of the wedge member 12 as in the prior art. .

In addition, in the case of re-tensioning for the existing anchorage 10, the work space for the removal and replacement of the existing wedge member 12 during re-tensioning operation by the gap maintaining mechanism 100 according to the present invention can be sufficiently secured Therefore, a separate ring member 30 or a new mounting hole 10a, etc. are not required as in the prior art, and a defective wedge member 12 can be replaced with a new wedge member 12, and a new tension force is required. Since it can be applied reliably without the loss of the sliding of the member, it is possible to obtain the effect of increasing the efficiency of re-tension while saving material.

This working effect may be any configuration in which the spacing holding unit 110 is formed so that the work space unit 120 may be secured, but as shown in FIG. 1 or less, the spacing maintaining unit 110 may be formed. In addition to being coupled to the upper portion, it is more preferable to take the structure further provided with a guide plate portion 130 formed with a tension member through-hole 131 in the core.

Since the guide plate 130 has a tension member through-hole 131 is formed in the core portion, the gap maintaining portion 110 is automatically located by inserting it from the upper end of the tension member 1, Make your work more efficient.

On the other hand, depending on the size and other variables of the load that the earth wall structure is to resist, the number of tension members 1 that one anchorage 10 is responsible for may be one, may be a plurality (four, six, etc.).

When the number of tension members 1 is one, as shown in Figures 1 and 2, by forming a space maintaining portion 110 on the left and right or around the tension member through-hole 131 formed in the core portion, It may take a structure in which the work space 120 is formed.

When the number of tension members 1 is plural, the wedge member insertion hole 11 of the anchorage 10 and the tension member through-holes 211 of the lower support plate 210 are formed as a plurality of radially symmetrical structures, in which case As shown in FIGS. 3 and 4, the guide plate portion 130 allows the plurality of tension members 1 inserted into the wedge member insertion hole 11 and the tension member through-hole 211 of the lower support plate 210 to pass therethrough. It is necessary to form a plurality of tension member through-holes 131.

In addition, in this case, in order to distribute the pressure to the fixing unit 10 of the pressing device 200 evenly, it is preferable to take a structure in which the spacer 110 is coupled to the center of the guide plate 130.

The space maintaining unit 110 is such that the lower surface of the lower support plate 210 of the pressurizing device 200 or the lower surface of the guide plate 130 of the space maintenance mechanism 100 according to the present invention and the upper surface of the fixing unit 10 are predetermined spaced apart from each other. Any structure may be used, and FIGS. 1 to 4 illustrate embodiments implemented by a cylindrical structure.

In the case where a plurality of tension member through-holes 131 are formed in the guide plate 130, and only a cylindrical gap maintaining part 110 is formed in the center, when an excessive pressure is applied by the pressurizing device 200, As a result, the gap maintaining unit 110 may be damaged, and thus the work may not be performed smoothly.

Therefore, as shown in Figures 6 to 8, by taking a structure in which the wing portion 111 is formed so as to protrude into the space between the plurality of wedge member insertion hole 11 of the fixing unit 10, buckling by eccentric load More preferably.

Furthermore, as shown in FIG. 9, when the protrusion jaw portion 112 is further provided to cover the outer circumferential surface of the fixing unit 10 at the outer lower end portion of the wing portion 111, the protrusion jaw portion during the application of tension force ( By combining 112 with the outer circumferential surface of the fixing device 10, it is possible to obtain an effect of further increasing the resistance to buckling caused by the eccentric load.

In addition, as shown in FIG. 10, when the lower end of the protruding jaw portion 112 has a structure formed to be in surface contact with the upper surface of the fixing plate 13 installed at the lower portion of the fixing unit 10, the space keeping mechanism 100 is provided. Since the pressure of the pressing device 200 applied to the pressure is transmitted not only to the fixing unit 10 but also to the fixing plate 13, the work can be performed more conveniently without fear of buckling due to an eccentric load.

The above description has been made with respect to the gap maintaining mechanism 100 having a structure that enables the installation and re-tensioning of the earth anchor more efficiently, on the premise of the structure of the hydraulic pressurizer 200 which has been generally used in the related art. Hereinafter, the structure of the conventional hydraulic pressurizing apparatus 200 will be somewhat improved, and the structure that can satisfy the object of the present invention will be described.

As shown in FIG. 11, the spacing maintaining mechanism 100 according to the present embodiment includes a fixing member 10 of an earth anchor having a wedge member insertion hole 11 formed in a core portion thereof, and a tension member through hole 201 formed in a core portion thereof. It is mounted between the formed pressing device 200, the pressing device support plate 140 and the surface contact with the lower portion of the pressing device 200, the tension member through-hole 141 is formed in the core portion; In addition to being coupled to the lower portion of the pressing device support plate 140, when the tension member 1 by the pressing device 200, when the tensioning device 10 and the pressing device support plate 140 is spaced a predetermined distance. A spacing holding unit 110 which maintains a spacing such that the spacing is maintained; A working space portion 120 exposed to the outside to remove or mount the wedge member 12 inserted into the wedge member insertion hole 11; Take a configuration that includes

That is, in the above-described embodiment on the premise of the presence of the lower support plate 210 of the pressurizing device 200, but described with respect to the embodiment of the structure applicable to this, in the present embodiment the lower support plate 210 By presenting a structure in which the spacing unit 110 is directly coupled to the pressurizing device receiving plate portion 140, which is a replacement member, the tension force applying operation of the tension member 1 is efficiently performed without the lower support plate 210 of the conventional pressurizing device 200. It is to suggest a structure that can be used.

Except for this point, other detailed features are the same as in the above-described embodiment.

That is, in the case where the number of the tension members 1 is one, the space maintaining part 110 is formed on the left and right or around the tension member through-holes formed in the core, thereby forming a structure in which the work space part 120 is formed. Can be taken.

When the number of tension members 1 is plural, the wedge member insertion hole 11 of the anchorage 10 and the tension member through-holes 211 of the lower support plate 210 are formed as a plurality of radially symmetrical structures, in which case As shown in FIGS. 3 and 4, the pressure device support plate portion is formed such that the plurality of tension members 1 inserted into the wedge member insertion hole 11 and the tension member through hole 211 of the lower support plate 210 penetrate ( It is necessary to form a plurality of tension member through-holes 141 of 140.

In addition, in this case, in order to distribute the pressure to the fixing unit 10 of the pressing device 200 evenly, it is preferable to take a structure in which the space maintaining unit 110 is coupled to the central portion of the pressing device support plate 140. .

The interval maintaining unit 110 may be any structure so that the lower surface of the pressurizing device receiving plate 140 and the upper surface of the fixing unit 10 are separated from each other, and FIG. 11 shows an embodiment implemented by a cylindrical structure. have.

In addition, in order to prevent buckling due to an eccentric load, it is necessary to take a structure in which the wing portion 111 is formed so as to protrude into the space between the plurality of wedge member insertion holes 11 of the fixing member 10 in the spacing portion 110. desirable.

Further, for the same reason, it is preferable to take a structure in which the outer jaw portion 112 of the wing 111 is further provided with a protruding jaw portion 112 to cover the outer circumferential surface of the fixing unit 10, and the lower end of the protruding jaw portion 112 has a fixing unit ( It is more preferable to make surface contact with the upper surface of the fixing plate 13 installed in the lower part of 10).

Since the above has been described only with respect to some of the preferred embodiments that can be implemented by the present invention, the scope of the present invention, as is well known, should not be construed as limited to the above embodiments, the present invention described above It will be said that both the technical idea and the technical idea which together with the base are included in the scope of the present invention.

The present invention prevents the sliding of the wedge member during installation work of the earth anchor can increase the tensile force application efficiency, the structure to increase the efficiency of re-tension by removing and replacing the wedge member during re-tensioning operation of the earth anchor We present a mechanism for installing and retensioning earth anchors.

Claims (14)

delete The anchor hole 10 of the earth anchor having a wedge member insertion hole 11 formed in the core portion, It is installed to be in contact with the lower portion of the pressing device 200, the tension member through-hole 201 is formed in the core portion and is mounted between the lower support plate 210, the tension member through-hole 211 is formed in the core portion, When the tension member 1 is tensioned by the pressing device 200, the interval maintaining unit 110 for maintaining a gap so that the predetermined distance between the fixing unit 10 and the lower support plate 210; A working space portion 120 exposed to the outside so as to remove or mount the wedge member 12 inserted into the wedge member insertion hole 11; A guide plate portion 130 coupled to an upper portion of the gap maintaining portion 110 and having a tension member through hole 131 formed at a core portion thereof; Earth anchor installation and re-tensioning interval maintenance mechanism 100 comprising a. The method of claim 2, The wedge member insertion hole 11 of the anchorage 10 and the tension member through-hole 211 of the lower support plate 210 is formed of a plurality of radially symmetrical structure, Tension member through hole 131 of the guide plate 130 so that the plurality of tension members 1 inserted into the wedge member insertion hole 11 and the tension member through hole 211 of the lower support plate 210 to pass through. ) Is an anchor anchor installation and re-tensioning space maintenance mechanism 100, characterized in that a plurality is formed. The method of claim 3, The gap maintaining unit 110 is installed on the center of the guide plate 130, the anchor anchor installation and re-tension gap maintenance mechanism (100). The method of claim 4, wherein The gap holding unit 110 is further provided with a wing portion 111 formed to protrude into the space between the plurality of wedge member insertion hole 11 of the fixing device 10, the interval for installing and re-tensioning earth anchors Retention Mechanism 100. The method of claim 5, An outer lower end portion of the wing 111 is provided with a projection jaw portion 112 to cover the outer circumferential surface of the fixing device 10, characterized in that the earth anchor installation and re-tension gap maintenance mechanism (100). The method of claim 6, The lower end of the protruding jaw portion 112 is earth anchor installation and re-tensioning space maintenance mechanism 100, characterized in that the surface formed in contact with the upper surface of the fixing plate 13 is installed in the lower portion of the fixing unit (10). The method according to any one of claims 2 to 4, The spacing maintaining unit 110 is installed in the anchor anchor and re-tension spacing mechanism 100, characterized in that the cylindrical shape. The anchor hole 10 of the earth anchor having a wedge member insertion hole 11 formed in the core portion, As it is mounted between the pressing device 200, the tension member through-hole 201 is formed in the core, A pressing device support plate 140 having surface contact with the lower portion of the pressing device 200 and a tension member through-hole 141 formed in the core portion thereof; In addition to being coupled to the lower portion of the pressing device support plate 140, when the tension member 1 by the pressing device 200, when the tensioning device 10 and the pressing device support plate 140 is spaced a predetermined distance. A spacing holding unit 110 which maintains a spacing such that the spacing is maintained; A working space portion 120 exposed to the outside to remove or mount the wedge member 12 inserted into the wedge member insertion hole 11; Earth anchor installation and re-tensioning mechanism 100, characterized in that it comprises a. The method of claim 9, The wedge member insertion hole 11 of the anchorage 10 and the tension member through hole 141 of the pressing device support plate 140 is formed in a plurality of radially symmetrical structure, The gap maintaining unit 110 is installed on the center of the pressurizing device receiving plate 140, the earth anchor installation and re-tension gap maintenance mechanism (100). The method of claim 10, The gap holding unit 110 is further provided with a wing portion 111 formed to protrude into the space between the plurality of wedge member insertion hole 11 of the fixing device 10, the interval for installing and re-tensioning earth anchors Retention Mechanism 100. The method of claim 11, An outer lower end portion of the wing 111 is provided with a projection jaw portion 112 to cover the outer circumferential surface of the fixing device 10, characterized in that the earth anchor installation and re-tension gap maintenance mechanism (100). The method of claim 12, The lower end of the protruding jaw portion (112) is earth anchor installation and re-tensioning space maintenance mechanism (100), characterized in that it is formed in surface contact with the upper surface of the fixing plate (13) is installed in the lower portion of the fixing unit (10). The method of claim 9 or 10, The spacing maintaining unit 110 is installed in the anchor anchor and re-tension spacing mechanism 100, characterized in that the cylindrical shape.

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