KR102502302B1 - Device for providing tention - Google Patents

Abstract

The present invention relates to a tension device for adjusting the tension for dismantling applied to a tension member in order to remove the tension member exposed from the ground. The tension device may comprise: a case part forming an inner space of the upper and lower sides in the height direction; and a wedge part disposed on the inner space, forming an insertion space into which a tension member exposed from the ground is inserted, and constraining the tension member inserted into the insertion space.

Description

Tension device {Device for providing tension}

The present invention relates to a tension device, and more particularly, to a tension device that adjusts the applied tension when dismantling tension is applied to a tension member to remove the tension member exposed from the ground.

In general, in order to prevent the collapse of the background soil, an earth wall structure such as a sheet pile is installed, and a tension member such as a steel wire is buried in a drilling hole drilled with a predetermined slope in the background soil by mortar or the like, and the upper end of the tension member is It is fixed by an anchorage and an anchoring plate installed on a support member such as a wale.

There are various ways to fix the upper end of the tension member to the anchorage, but the wedge type anchoring method is mainly used.

In the wedge-type anchorage method, after applying a tensile force to the tension member by a tension device, the wedge member is inserted and fixed together with the tension member into the wedge member insertion hole of the anchorage, so that the tensile force applied to the tension member is applied to the entire earth wall structure through the anchorage play a role in conveying

Since these tension members are exposed to the outside, they must be removed after the structure is built because they cause safety problems and environmental pollution in the inserted earth wall (ground).

When removing the tension member, the tension member exposed to the outside of the ground must receive the tensile repulsive force as the tensile force is released momentarily in the state where the tensile force for disassembly is applied in the opposite direction to the inserted direction.

This is to break the chemical bond between the penetrating concrete or mortar and the wedge seated inside the ground, and also to remove soil attached to the tension member inserted into the ground.

On the other hand, in Korean Patent Registration No. 10-0684387 B1 (2007.02.12), since the length or material properties of the free end of each tension member are different, even if the same tension is applied, the amount of stretching is not constant. To this end, a tensioning device for an earth anchor including a plurality of member-specific tensioning devices is disclosed.

However, even if the tension member is individually applied to each tension member by the hydraulic device, if the tension force is applied stronger than the bonding force between the wedge member and the tension device due to carelessness of the operator, the tension member is damaged or the tension member is separated from the wedge member, resulting in There was a problem that human and material damage occurred due to an accident.

The present invention is to solve the above problems, and to provide a tensioning device that can prevent accidents caused by operator's carelessness or malfunction of external devices by adjusting the tension applied to the tensioning member according to the strength of the ground. am.

The problem to be solved by the present invention is not limited to the above-mentioned problems, and problems not mentioned will be clearly understood by those skilled in the art from this specification and the accompanying drawings. .

A tensioning device according to an embodiment of the present invention relates to a tensioning device that adjusts a tensioning force for disassembly applied to a tensioning member in order to remove a tensioning member exposed from the ground. wealth; It may be a tension device including a wedge portion disposed on the inner space, forming an insertion space into which a tension member exposed from the ground is inserted, and restraining the tension member inserted into the insertion space.

According to the tensioning device according to an embodiment of the present invention, it is possible to prevent accidents caused by carelessness of a worker or malfunction of an external device by adjusting the tensioning force applied to the tensioning member according to the strength of the ground.

Effects of the present invention are not limited to the above-mentioned effects, and effects not mentioned will be clearly understood by those skilled in the art from this specification and the accompanying drawings.

1 is a front view and a partial perspective view for explaining a tension device according to an embodiment of the present invention as a whole.
Figure 2 is a partially exploded cross-sectional view for explaining the configuration of a tension device according to an embodiment of the present invention.
3 is a perspective view and partial cross-sectional view for explaining a tensioning device according to an embodiment of the present invention.
Figure 4 is a partial cross-sectional view for explaining that the tension applied to the tension member is adjusted by the tension device according to an embodiment of the present invention.
5 is a partial cross-sectional view illustrating that the tension applied to the tension member is adjusted by the tension device according to an embodiment of the present invention.
6 is a partial cross-sectional view illustrating that the tension applied to the tension member is adjusted by the tension device according to an embodiment of the present invention.
7 is a partial cross-sectional view illustrating that the tension applied to the tension member is adjusted by the tension device according to an embodiment of the present invention.
8 is a perspective view and a plan view for explaining a wedge portion constituting a tension device according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the presented embodiments, and those skilled in the art who understand the spirit of the present invention may add, change, delete, etc. other elements within the scope of the same spirit, through other degenerative inventions or the present invention. Other embodiments included within the scope of the inventive idea can be easily proposed, but it will also be said to be included within the scope of the inventive concept.

A tensioning device according to an embodiment of the present invention relates to a tensioning device that adjusts a tensioning force for disassembly applied to a tensioning member in order to remove a tensioning member exposed from the ground. wealth; a wedge portion disposed on the inner space, forming an insertion space into which a tension member exposed from the ground is inserted, and constraining the tension member inserted into the insertion space; It may be a tension device including; and a head portion that forms an enclosing space surrounding the upper end of the tension member and is connected to the wedge portion.

In addition, the tension device may further include; an adjustment member disposed on the inner space to limit the height of the tension member inserted into the insertion space.

In addition, the adjusting member may be a tension device that is moved in a height direction on the inner space.

In addition, the head portion may include an insertion hole, and the adjusting member may be a tension device inserted into the insertion hole.

In addition, the insertion hole may form a screw thread, and the adjustment member may be a tension device forming a screw thread corresponding to the screw thread of the insertion hole.

In addition, the wedge part includes a first wedge and a second wedge that cooperate to form the insertion space, and the first wedge is formed from a first wedge body part contacting the case part and the first wedge body part. A first wedge portion protruding in the direction of the insertion space and in contact with the tension member, and the second wedge includes a second wedge body portion in contact with the case portion and protrudes from the second wedge body portion toward the insertion space A second wedge portion formed and having a second wedge portion in contact with the tension member, wherein the first wedge portion and the second wedge portion have different shapes so that the restraining force applied to the tension member by the first wedge portion and the restraining force applied to the tension member by the second wedge portion are different , can be a tension device.

In addition, the first wedge portion is formed on the first wedge body portion to a first length in the height direction, the second wedge portion, the first length in the height direction on the second wedge body portion It may be a tensioning device formed with a smaller second length.

In addition, in the first wedge portion, an arbitrary wedge in the height direction and a distance between the arbitrary wedge and the adjacent wedge is a first length, and the second wedge portion is adjacent to any wedge and any wedge in the height direction The distance between the wedges to be a second length greater than the first length, it may be a tension device.

In addition, in the first wedge portion, the height of the wedge protruding in the width direction from the first wedge body portion is the first height, and the second wedge portion is the height of the wedge protruding in the width direction from the second wedge body portion A second height greater than the first height may be a tensioning device.

In addition, the wedge unit includes a first wedge and a second wedge that cooperate to form the insertion space, and the first wedge and the second wedge are configured to perform a binding force applied by the first wedge to the tension member and a second wedge. It may be a tension device with different strengths so that the binding force applied to the additional tension member is different.

Elements having the same function within the scope of the same idea appearing in the drawings of each embodiment are described using the same reference numerals.

1 is a front view and a partial perspective view for explaining a tension device according to an embodiment of the present invention as a whole.

2 is a partially exploded cross-sectional view for explaining the configuration of a tension device according to an embodiment of the present invention.

3 (a) to (b) are perspective views and partial cross-sectional views for explaining a tensioning device according to an embodiment of the present invention.

4 (a) to (b) are partial cross-sectional views illustrating that the tension applied to the tension member is adjusted by the tension device according to an embodiment of the present invention.

5 (a) to (b) are partial cross-sectional views illustrating that the tension applied to the tension member is adjusted by the tension device according to an embodiment of the present invention.

6 (a) to (b) are partial cross-sectional views illustrating that the tension applied to the tension member is adjusted by the tension device according to an embodiment of the present invention.

7 (a) to (b) are partial cross-sectional views illustrating that the tension applied to the tension member is adjusted by the tension device according to an embodiment of the present invention.

8(a) to (b) are a perspective view and a plan view for explaining a wedge part constituting a tensioning device according to an embodiment of the present invention.

In the accompanying drawings, in order to more clearly express the technical idea of the present invention, parts that are not related to the technical idea of the present invention or can be easily derived from those skilled in the art are simplified or omitted.

Throughout the specification, when a part is said to be "connected" to another part, this includes not only the case where it is "directly connected" but also the case where it is "electrically connected" with another element interposed therebetween. . In addition, when a part "includes" a certain component, this means that it may further include other components, not excluding other components, unless otherwise stated, and one or more other characteristics. However, it should be understood that it does not preclude the possibility of existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In this specification, a "unit" includes a unit realized by hardware, a unit realized by software, and a unit realized using both. Further, one unit may be realized using two or more hardware, and two or more units may be realized by one hardware.

In this specification, some of the operations or functions described as being performed by a terminal or device may be performed instead by a server connected to the terminal or device. Likewise, some of the operations or functions described as being performed by the server may also be performed in a terminal or device connected to the corresponding server.

<First Embodiment>

Hereinafter, the tension device 10 according to the first embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4 .

First, to define terms for directions, as shown in (a) of FIG. 6, the Y direction means the height direction and the X direction means the width direction.

The tension member (P) is described in Korean Registered Patent No. 10-1839100 (registered on March 9, 2018). Briefly, one end inserted into the ground (G) is combined with a wedge body (not shown) inside the anchor, In addition, the anchor inserted into the ground (G) is chemically bonded to concrete or mortar injected from the outside.

Therefore, when removing the tension member (P), after applying the tensile force for disassembly in the direction opposite to the inserted direction to the tension member (P) exposed to the outside of the ground, the tensile force is momentarily removed to give a tensile repulsive force .

This is to break the chemical bond between the penetrating concrete or mortar and the wedge body seated inside the ground, and also to remove soil attached to the tension member inserted into the ground.

However, it is preferable that the ground investigation be performed before the tension member (P) is inserted into the ground (G), and the ground investigation may include ground workability analysis, rock slope analysis, rock grade analysis, stratum characteristics analysis, etc. , It can be carried out by the known GPR (Ground Penetrating Radar) method.

On the other hand, as can be seen in Figure 1, the other end of the tension member (P) exposed from the ground (G) may be connected to the tension device (10).

The tension device 10 is disposed on the case portion 300 and the inner space S1 forming the inner space S1 of the upper and lower narrows in the height direction, but the tension member P exposed from the ground G is inserted. forming an insertion space (S2), and forming a wedge portion (100) for restraining the tension member inserted into the insertion space (S2) and an enclosing space (S4) surrounding the upper end of the tension member (P), the wedge portion It includes a head 200 connected to (100).

To explain this in more detail, as can be seen in FIG. 2 , the case 300 forms an inner space S1 of upper and lower narrows, the upper side of which is relatively wider than the lower side in the height direction.

The wedge part 100 is disposed on the inner space S1 and forms an insertion space S2 into which the tension member P exposed from the ground G can be inserted, so that the tension member P is inserted into the insertion space S2. It is inserted through the space (S2) and combined with the wedge part (100).

As can be seen in (a) of FIG. 3, the wedge portion 100 is formed in a cone shape in cooperation with a plurality of wedges 110 to form an insertion space S2 therein, and the head portion 200 ) By the plurality of wedges 110 can be fixed on the inner space (S1).

In addition, as can be seen in (b) of FIG. 3, each of the wedges 110 has a wedge portion 120 formed at a portion in contact with the tension member P, so that the inserted tension member P is wedge 110 Is coupled with the wedge portion 120 to form.

As can be seen in (a) to (b) of FIG. 3, the head portion 200 surrounds the upper end of the inserted tension member P and forms an enclosing space S4 communicating with the insertion space S2. At the same time, the plurality of wedges 110 forming the wedge portion 100 by being coupled with the wedge portion 100 are firmly supported.

That is, as shown in (a) of FIG. 3, the tension member P exposed to the outside from the ground G is inserted into the insertion space S2 and the wedge 120 formed by the wedge 110 and coupled, and the upper end of the tension member P is surrounded and fixed by the head portion 200 in the enclosing space S4, and as a result, the tension member P exposed to the outside is connected to the wedge portion 100 and the head portion 200. It is connected to the tensioning device 10 by the part 200.

Here, the tension device 10 is an adjusting member (P) disposed on the inner space (S1) and limiting the height of the tension member (P) exposed to the outside inserted into the insertion space (S2) ( T) may be further included.

To explain this in more detail, as can be seen in FIG. 2, the head portion 200 may form an insertion hole S3 that penetrates the center of the head portion 200 and communicates with the enclosing space S4. The adjusting member (T) is inserted into the insertion hole (S3).

The insertion hole (S3) may be formed in the height direction, and thus, the adjustment member (T) inserted into the insertion hole (S3) can be moved in the height direction on the inner space (S1).

The insertion hole (S3) may form a screw thread, for example, and the adjusting member (T) may be a bolt forming a screw thread corresponding to the screw thread formed by the insertion hole (S3), but is not limited thereto, and the adjustment member (T) is not limited thereto. The member (T) may be implemented by sliding in the insertion hole (S3).

When the strength of the ground (G) is relatively firm by ground investigation, the tension device 10 is in the form of FIG. 4 (a), the tension member P and the wedge 110 ) After increasing the contact area with the wedge portion 120 formed by the wedge portion 100 and the tensile member P, the bonding force between the wedge portion 100 and the tension member P is relatively increased, and then the external device (for example, a hydraulic device, not shown) An external force (tensile force) is applied in the opposite direction.

On the other hand, the tensile force refers to the tensile force for disassembly applied in the opposite direction to the direction inserted into the tensile member P exposed to the outside of the ground when the tensile member P is removed.

This is to break the chemical bond between the penetrating concrete or mortar and the wedge body seated inside the ground, and also to remove soil attached to the tension member inserted into the ground.

Here, the tensile force applied to the tension device 10 from the external device should be less than the force obtained by adding the physical bonding force between the tension member P and the anchor inserted into the ground G and the chemical bonding force between the concrete and the anchor.

If a force greater than this is applied as a tensile force, the tension member (P) may be broken or the tension member (P) may be released to the outside of the ground (G), and the chemical bond between the ground (G) and concrete or mortar may be broken. This is because accidents may occur resulting in human and material damage.

Therefore, the tension device 10 is inserted in the tension device 10 when the tensile force is equal to or relatively greater than the sum of the physical bonding force between the inserted tension member P and the anchor and the chemical bonding force between the concrete and the anchor. By causing the tension member P and the wedge portion 100 to separate first, the tensile force applied to the ground G is adjusted to prevent such accidents in advance.

To explain this in more detail, the operator adjusts the screw thread formed by the adjusting member (T) and the insertion hole (S3) to surround the adjusting member (T) with the surrounding space (S4) and the insertion space (S4) communicating with the surrounding space (S4). ), or can be retracted in the direction of the insertion hole (S3), which is performed based on ground investigation.

If the strength of the ground (G) is relatively weak, as can be seen in (b) of Figure 4, the operator protrudes the control member (T) into the insertion space (S4).

Therefore, the contact area of the inserted tension member P with the wedge portion 120 formed by the wedge 110 is relatively small, and as a result, the bonding force between the tension device 10 and the tension member P is relatively small, Relatively, the tensile force applied to the tension device 10 may also be applied relatively small in correspondence with the strength of the ground (G). That is, the adjusting member (T) arranges the end of the tension member (P) inserted into the insertion space (S4) on the wedge portion 120, so that the bonding force between the tension device 10 and the tension member (P) is relatively can be smaller

On the other hand, when the strength of the ground (G) is relatively solid, as can be seen in (a) of Figure 4, the operator adjusts the control member (T) so that it does not protrude into the insertion space (S4).

Therefore, the inserted tension member P has a relatively large contact area with the wedge 120 formed by the wedge 110, so that the bonding force between the tension device 10 and the tension member P becomes relatively large, and the tension The tensile force applied to the device 10 may also be applied relatively large in correspondence with the strength of the ground (G).

That is, according to the relative strength of the ground (G), the operator can adjust the tensile force applied to the tension device 10 from the external device by protruding or retracting the adjusting member (T), and accordingly, the tension member (P) It prevents accidents in advance that are cut off or the tension member (P) is separated from the ground (G).

Therefore, since the binding force between the tension member P inserted into the ground G and the anchor can be measured in advance before inserting the anchor into the ground G, the tensioning device 10 responds to the relative strength of the ground according to the ground investigation. Thus, the tensile force applied by the external device can be adjusted.

However, adjusting the tensile force means that the coupling force between the tension member P inserted in the tension device 10 and the wedge portion is adjusted to maximize the tensile force applied according to the ground investigation (the physical bonding force between the inserted tension member P and the anchor and the concrete It may mean that it is adjusted so that it is less applied than the chemical bonding force between the anchor and the anchor), which adjusts the bonding force between the inserted tension member P and the wedge portion 100, and when the maximum value of the tensile force according to the ground investigation is applied, the tension device It is implemented by causing the tension member P inserted in (10) to be separated from the wedge portion 100 first, and through this, the tension member P is cut or the anchor inserted into the ground G is chemically bonded with the ground G Accidents such as ground collapse due to breakage of coupling are prevented in advance.

<Second Embodiment>

Hereinafter, a second embodiment of the tensioning device 10 will be described with reference to FIGS. 3 and 5 to 8 .

As can be seen in (a) of FIG. 3, the wedge portion 100 is composed of a plurality of wedges 110, and the plurality of wedges 110 cooperate to form an insertion space S2.

Here, the wedges 110 constituting the wedge portion 100 may be formed in different shapes so that their bonding force with the tension member P inserted into the insertion space S2 may vary, and accordingly, the tension is regulated.

To explain this in more detail, the general wedge 110 constituting the wedge portion 100, as shown in (a) of FIG. 5, each wedge 110, the wedge portion 120 formed on the inner peripheral surface of the wedge 110 The length of is the same, and accordingly, the binding force for restraining the inserted tension member P is formed the same.

In contrast, in the wedge part 100 according to the present invention, the shape of the wedge 110 constituting the wedge part 100 is formed differently.

That is, as can be seen in (b) of FIG. 5, the wedge portion 100 cooperates with the first wedge 110 forming the insertion space S2 and the second wedge 110 and the second wedge ( 130) may be provided.

To explain this in more detail, as can be seen in (b) of FIG. 5, the first wedge 110 is in contact with the case portion 300 and the first wedge body portion in the width direction from the first wedge body portion. It has a first wedge portion 120 protruding and coming into contact with the tension member P to restrain the tension member P, and the second wedge 130 has a second wedge body portion in contact with the case portion 300 and A second wedge portion 140 protrudes from the second wedge body in the width direction and comes into contact with the tension member P to constrain the tension member P.

Here, as an example, as can be seen in (b) of FIG. 5, the length of the first wedge portion 120 formed in the height direction is the first length L3, and in the height direction of the second wedge portion 140 The formed length of is the second length L4.

Accordingly, the restraining force for restraining the tension member P into which the first wedge 110 is inserted (part of the bonding force between the inserted tension member and the wedge portion) restrains the tension member P into which the second wedge 130 is inserted. It may be relatively greater than the binding force (part of the bonding force between the inserted tension member and the wedge portion), and the total bonding force between the wedge portion 100 and the inserted tension member P is relatively smaller than that in FIG. 5(a).

Therefore, when the strength of the ground (G) is relatively firm, the operator assembles the wedge portion 100 using only the first wedge 110, and when the strength of the ground (G) is relatively weak, the operator uses the wedge 110 When assembling the unit 100, by assembling the wedge unit 100 using only the first wedge 110 and the second wedge 130 or using only the second wedge 130, a tension device from an external device is provided. The tensile force applied to (10) can be adjusted.

Another example in which the wedge 110 constituting the wedge part 100 is formed will be described using FIG. 6 .

6(a) is a view showing a general wedge 110 constituting the wedge portion 100, and the wedge portion 100 is constituted using the same wedge 110.

In contrast, in the wedge part 100 according to the present invention, the shape of the wedge 110 constituting the wedge part 100 is formed differently.

That is, as can be seen in (b) of FIG. 6, the first wedge portion 120 formed by the first wedge 110 has an arbitrary wedge and a gap in the height direction between the arbitrary wedge and the adjacent wedge. The first length is D1, and the second wedge portion 120 formed by the second wedge 110 has an arbitrary wedge and a distance between the arbitrary wedge and the adjacent wedge in the height direction is the second length D2 .

Accordingly, the restraining force for restraining the tension member P into which the first wedge 110 is inserted (part of the bonding force between the inserted tension member and the wedge portion) restrains the tension member P into which the second wedge 130 is inserted. It may be relatively greater than the binding force (part of the bonding force between the inserted tension member and the wedge portion), and the total bonding force between the wedge portion 100 and the inserted tension member P is relatively smaller than that in FIG. 6(a).

Therefore, when the strength of the ground (G) is relatively firm, the operator assembles the wedge portion 100 using only the first wedge 110, and when the strength of the ground (G) is relatively weak, the operator uses the wedge 110 When assembling the unit 100, by assembling the wedge unit 100 using only the first wedge 110 and the second wedge 130 or using only the second wedge 130, a tension device from an external device is provided. The tensile force applied to (10) can be adjusted.

Another example in which the wedge 110 constituting the wedge part 100 is formed will be described using FIG. 7 .

7(a) is a view showing a general wedge 110 constituting the wedge portion 100, and the wedge portion 100 is constituted using the same wedge 110.

In contrast, in the wedge part 100 according to the present invention, the shape of the wedge 110 constituting the wedge part 100 is formed differently.

That is, as can be seen in (b) of FIG. 7, in the first wedge portion 120 formed by the first wedge 110, the height of the wedge protruding in the width direction is H1, which is the first height, and the first In the second wedge portion 120 formed by the two wedges 110, the height of the wedge protruding in the width direction may be H2, which is the second height.

Accordingly, the restraining force for restraining the tension member P into which the first wedge 110 is inserted (part of the bonding force between the inserted tension member and the wedge portion) restrains the tension member P into which the second wedge 130 is inserted. It may be relatively smaller than the binding force (part of the bonding force between the inserted tension member and the wedge portion), and the total bonding force between the wedge portion 100 and the inserted tension member P is relatively greater than that in FIG. 6(a).

Therefore, when the strength of the ground (G) is relatively soft, the operator assembles the wedge portion 100 using only the first wedge 110, and when the strength of the ground (G) is relatively strong, the operator uses the wedge 110 When assembling the unit 100, by assembling the wedge unit 100 using only the first wedge 110 and the second wedge 130 or using only the second wedge 130, a tension device from an external device is provided. The tensile force applied to (10) can be adjusted.

Another example in which the wedge 110 constituting the wedge part 100 is formed will be described using FIG. 8 .

As can be seen in (a) of FIG. 8 , in the wedge part 100 according to the present invention, the first wedge 110 and the second wedge 130 constituting the wedge part 100 have different shapes.

As can be seen in FIG. 110) and the overall size of the second wedge 130.

Accordingly, the wedge part 100 can adjust the tensile force applied to the tension device 10 from the external device through the sizes of the first wedge 110 and the second wedge 130 .

Furthermore, the lengths formed in the height direction of the first wedge portion 120 and the second wedge portion 140 formed in the first wedge 110 and the second wedge 130 are adjusted.

Accordingly, the wedge portion 100 can adjust the tensile force applied from the external device to the tension device 10 through the lengths formed in the height direction of the first wedge portion 120 and the second wedge portion 140 there is.

In addition, in the first wedge portion 120, a distance in a height direction between an arbitrary wedge and an arbitrary wedge and a neighboring wedge is equal to a distance between an arbitrary wedge of the second wedge portion 120 and an arbitrary wedge and a neighboring wedge. It may be formed differently from the spacing in the height direction.

Accordingly, the wedge portion 100 is formed on the first wedge portion 120 and the second wedge portion 140 through an arbitrary wedge and a gap in the height direction between the arbitrary wedge and the adjacent wedge to external devices. It is possible to adjust the tensile force applied to the tension device 10 from above.

In addition, the first wedge portion 120 may be formed so that the height of the wedge protruding in the width direction is different from the height of the wedge protruding in the width direction of the second wedge portion 120 .

Accordingly, the wedge portion 100 is applied to the tension device 10 from an external device through the height of the wedge protruding in the width direction formed on the first wedge portion 120 and the second wedge portion 140 Tension force can be adjusted.

On the other hand, as another example, the tension device 10 configures the wedge portion 100 using wedges 110 having different strengths so that the binding force between the wedge 110 and the inserted tension member P is different, The tension applied to the tension device 10 from the device can be adjusted.

To explain this in more detail, in general, when the strength of the wedge 110 is relatively high, the binding force of the wedge 110 to restrain the tension member P is relatively high.

Therefore, a worker may change the strength of the first wedge 110 and the second wedge 130 through a method such as heat treatment.

In addition, as described above with reference to FIG. 8 , the first wedge 110 and the second wedge 130 may have different strengths and different sizes forming the insertion space.

Therefore, when the strength of the ground (G) is relatively firm, the worker assembles the wedge portion 100 using only the first wedge 110 whose strength is relatively increased by a method such as heat treatment, When the strength is relatively weak, when the worker assembles the wedge part 100, the first wedge 110 having a relatively high strength through heat treatment and the second wedge 130 having a relatively low strength due to no heat treatment By assembling the wedge part 100 using only the second wedge 130, which is relatively low in strength because it is not used or heat treated, it is possible to adjust the tensile force applied to the tension device 10 from an external device.

However, adjusting the tensile force means that the coupling force between the tension member P inserted in the tension device 10 and the wedge portion is adjusted to maximize the tensile force applied according to the ground investigation (the physical bonding force between the inserted tension member P and the anchor and the concrete It may mean that it is adjusted so that it is less applied than the chemical bonding force between the anchor and the anchor), which adjusts the bonding force between the inserted tension member P and the wedge portion 100, and when the maximum value of the tensile force according to the ground investigation is applied, the tension device It is implemented by causing the tension member P inserted in (10) to be separated from the wedge portion 100 first, and through this, the tension member P is cut or the anchor inserted into the ground G is chemically bonded with the ground G Accidents such as ground collapse due to breakage of coupling are prevented in advance.

In the above, the configuration and characteristics of the present invention have been described based on the embodiments according to the present invention, but the present invention is not limited thereto, and various changes or modifications can be made within the spirit and scope of the present invention. It is apparent to those skilled in the art, and therefore such changes or modifications are intended to fall within the scope of the appended claims.

100: wedge part, 200: head part, 300: case part
110: first wedge, 120: first wedge
130: second wedge, 140: second wedge portion
S1: Internal space, S2: Insertion space, S3: Insertion hole, S4: Enclosed space
T: control member, P: tension member, G: ground

Claims (11)

In the tension device for adjusting the tension for dismantling applied to the tension member in order to remove the tension member exposed from the ground,
A case portion forming an inner space of the upper and lower sides in the height direction; and
A wedge portion disposed on the inner space to form an insertion space into which a tension member exposed from the ground is inserted, and restraining the tension member inserted into the insertion space; includes,
The wedge part,
A wedge body portion in contact with the case portion and a wedge portion protruding from the wedge body portion toward the insertion space and in contact with the tension member,
Further comprising; an adjusting member for disposing the end of the tension member inserted into the insertion space on the wedge portion.
tension device.
According to claim 1,
A head portion disposed on an upper end side of the tension member and connected to the wedge portion; further comprising,
The control member,
Disposed on the inner space to limit the height of the tension member inserted on the insertion space,
tension device.
According to claim 2,
The control member,
Positioned in the height direction on the inner space,
tension device.
According to claim 3,
the head,
Equipped with an inlet,
The control member,
inserted into the insertion hole,
tension device.
According to claim 4,
The insertion port,
forming a thread,
The control member,
Forming a screw thread corresponding to the screw thread of the insertion hole,
tension device.
In the tension device for adjusting the tension for dismantling applied to the tension member in order to remove the tension member exposed from the ground,
A case portion forming an inner space of the upper and lower sides in the height direction; and
A wedge portion disposed on the inner space to form an insertion space into which a tension member exposed from the ground is inserted, and restraining the tension member inserted into the insertion space; includes,
The wedge part,
A first wedge and a second wedge that cooperate to form the insertion space,
The first wedge,
A first wedge body portion in contact with the case portion and a first wedge portion protruding from the first wedge body portion toward the insertion space and in contact with the tension member,
The second wedge,
A second wedge body portion contacting the case portion and a second wedge portion protruding from the second wedge body portion toward the insertion space and contacting the tension member,
The first wedge part and the second wedge part,
The shape is different so that the binding force applied to the tension member by the first wedge and the binding force applied to the tension member by the second wedge are different.
tension device.
According to claim 6,
The first wedge portion,
It is formed in a first length in the height direction on the first wedge body,
The second wedge part,
Formed on the second wedge body in a second length smaller than the first length in the height direction,
tension device.
According to claim 6,
The first wedge portion,
Any wedge in the height direction and the interval between the arbitrary wedge and the neighboring wedge is a first length,
The second wedge portion,
Any wedge in the height direction and the distance between any wedge and the neighboring wedge is a second length greater than the first length,
tension device.
According to claim 6,
The first wedge portion,
The height of the wedge protruding in the width direction from the first wedge body is the first height,
The second wedge portion,
The height of the wedge protruding in the width direction from the second wedge body is a second height greater than the first height,
tension device.
In the tension device for adjusting the tension for dismantling applied to the tension member in order to remove the tension member exposed from the ground,
A case portion forming an inner space of the upper and lower sides in the height direction; and
A wedge portion disposed on the inner space to form an insertion space into which a tension member exposed from the ground is inserted, and restraining the tension member inserted into the insertion space; includes,
The wedge part,
A first wedge and a second wedge that cooperate to form the insertion space,
The first wedge and the second wedge,
The strength is different so that the binding force applied to the tension member by the first wedge and the binding force applied to the tension member by the second wedge are different.
tension device.
According to any one of claims 7, 8, 9 or 10,
The first wedge and the second wedge,
The size forming the insertion space is different,
tension device.

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