KR20110126995A - An anchor assembly - Google Patents

Abstract

PURPOSE: An anchor assembly for weak soil foundation is provided to prevent environmental contamination of bedrock by reducing a tensile member after cutting bedrock. CONSTITUTION: An anchor assembly for weak soil foundation comprises a tensile member(1), a protecting duct(2), a casing(110), a cover(120), a moveable member(130), a wing piece(132), an elastic member(125), and a pulling block(140). The protecting duct protects while protecting the outer circumference of the tensile member. A slot hole(111) more than two is formed on the surface into the longitudinal direction. The cover is fixed to the underground side end part of the casing. A first guide hole(121) through which the pulling block passes is formed on the cover. The elastic member is supported with cover and elastically presses the moveable member. The pulling block is combined in the second guiding hole of the moveable member and transfers the moving block.

Description

Soft anchor anchor assembly {An anchor assembly}

The present invention relates to an anchor assembly for soft ground, and more particularly, to an anchor assembly for soft ground, which allows the tension member to be easily removed and the wing pieces can be fixed to the insertion hole at a uniform pressure.

In general, as the industry develops, it is inevitable that the steep slope is inevitable due to the construction of a new town or the construction of a complex.

Therefore, it is necessary to establish slope stabilization measures to improve land use efficiency, to secure stability and comfort of residential complexes, and to satisfy constructability, economic feasibility and environmental preservation.

As an example of such a slope stabilization measures method, a method using an anchor (anchor) has been adopted.

1 to 3 show the soft ground anchor disclosed in Korean Patent Registration No. 0689769, the anchor 100 is mainly inserted into the rock 10 or concrete molding during work such as building foundation or civil engineering works Drilling the hole 20, inserting the anchor 100 in the insertion hole 20, and then the anchor 100 to be firmly supported and secured without being easily separated or flow from the rock or concrete molding, etc. A plurality of expansion locking plate 500 that is opened and closed by the lifting body 300 is rotatably connected to the fixed plate 400.

When the anchor 100 rotates the shaft rod 200 in one direction, the lifting body 300 screwed to the end of the screw rod body 210 is linearly moved along the screw rod body 210, Accordingly, as shown in FIG. 2, the expansion catching plate 500 is opened with respect to the fixing plate 400, so that the toothed catching pieces 510 are in close contact with the inner wall surface of the insertion hole 20.

However, the soft ground anchor as described above has the following problems.

First, the above-described anchor 100 of the prior art is extended by being linearly moved along the threaded rod body 210 lifting member 300 screwed to the threaded rod body 210 when rotating the shaft rod 200 The plates 500 are to be opened, in this case, when the screw rod body 210 is installed in the insertion hole 20 with the expansion catching plate 500 at the head, the inside of the insertion hole 20 of the rock or concrete. Since the powder on the wall falls to the surface of the threaded rod 210, the movement of the lifting member 300 with respect to the threaded rod 210 is not desired.

In addition, since the shaft rod 200 is to be rotated through the tip end of the rectangular rod body 220 in the state where the insertion hole 20 is installed, a considerable force is required, and thus, a work time is somewhat required.

Second, since the expansion catching plate 500 is rotated about the fixing plate 400 to be in close contact with the inner wall surface of the insertion hole 20, as shown in FIG. 3, only the distal end of the sawtooth engaging piece 510 is inserted into the insertion hole 20. It will be in close contact with the inner wall surface. Accordingly, there is a problem in that the expansion catching plate 500 slips with respect to the insertion hole 20 when the structure 30 and the expansion catching plate 500 act by mutual traction by tightening the shaft 200.

Third, after the anchor 100 is installed in the insertion hole 20, concrete is injected into the insertion hole 20 to allow the concrete and the rock 10 to behave as the same body. ) Is fixed to the fixed plate 400 is not removable as a structure.

Accordingly, the axial rod 200 is rusted or deteriorated to contaminate soil such as rock, and further, it is cumbersome to remove the axial rod 200 when re-installed later.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an anchor for soft ground which is improved to simplify the installation of the anchor and shorten the air.

Another object of the present invention is to provide a soft ground anchor whose structure is improved so that the anchor body is in close contact with the inner wall of the rock hole.

Another object of the present invention is to provide a soft ground anchor assembly that can be easily removed from the insertion hole of the rock after the injection material such as concrete into the insertion hole of the rock to provide a traction with the anchor have.

In the present invention to achieve the above object in the soft ground anchor assembly is inserted into the insertion hole perforated in the soft ground,

In the soft ground anchor assembly is inserted into the insertion hole drilled in the soft ground,

A protective tube (2) surrounding the tension member (1) and the outer peripheral surface of the tension member (1);

A tubular casing 110 having two or more long holes 111 formed in the longitudinal direction on the surface thereof;

A moving member 130 provided to be movable in the longitudinal direction of the casing 110 in the casing 110 and having a second guide hole 133 through which the protective tube 2 passes;

Two or more wing pieces 132 protruding out of the casing 110 through the long hole 111 and hinged to the moving member 130;

A traction block 140 having one end coupled to the second guide holes 132 and holding or releasing the end of the tension member 1;

A cover 120 fixed to an underground end of the casing 110 and having a first guide hole 121 penetrating the traction block 140;

It is supported by the cover 120 and the elastic member 125 for pressing the moving member 130 in the ground direction;

When the casing 110 is inserted into the insertion hole, the casing 110 rotates toward the long hole 111 by a reaction generated during friction with the insertion hole, and after the insertion of the casing 110 is completed, the casing 110 may be grounded. When the force is applied to the ground to provide a soft ground anchor assembly, characterized in that to prevent the casing 110 from moving in the ground direction.

In addition, in the present invention, the traction block is a cylindrical case, a front end cap coupled to one end of the case and fixed to the third coupling hole, and a rear end cap coupled to the other end of the case, A tapered washer supported on the inner side of the tip cap, a hollow sleeve supported on the washer, slidably coupled to the sleeve, and an end portion of the tension member detachably coupled, A collet chuck elastically opened when detached, an elastic rubber ring coupled to the outer circumferential surface of the collet chuck, a support cap supported at the end of the collet chuck, an elastic body supported by the support cap, and fixed to the inner circumferential surface of the case Characterized in that the wiring is provided.

First, the anchor assembly of the present invention stabilizes the rock 10 by integrally behaving by the grout even if a crack 50 occurs in the rock 10.

Second, since it is possible to remove the tension member (1) to prevent environmental pollution of the rock, and to solve the inconvenience of having to remove the tension member (1) at the time of the subsequent incision of the rock.

Third, since the rocker blocks 130 are in close contact with the inner wall of the insertion hole 20 only by pulling the tension member 1, the construction is more convenient than the work in which the square bar body 220 is rotated in the prior art. When the screw rod body 210 is inserted into the insertion hole 20, the screw portion is contaminated by stones falling from the rock, thereby eliminating the problem that the screw tightening operation is not desired.

1 to 3 is a schematic view showing a conventional anchor assembly,
4 is an exploded perspective view of the anchor assembly of the present invention;
5 is an assembled perspective view of the anchor assembly of the present invention;
6 is an exploded perspective view of the traction block;
7 to 9 is an operation cross-sectional view illustrating the operating state of the anchor assembly of the present invention.

Hereinafter, one preferred example of the present invention will be described with reference to the drawings to provide specific details for carrying out the present invention.

4 is an exploded perspective view of the anchor assembly of the present invention, Figure 5 is an assembled perspective view of the anchor assembly of the present invention. Figure 6 is an exploded perspective view of the traction block, Figure 7 to Figure 9 is an operation cross-sectional view illustrating the operating state of the anchor assembly of the present invention.

Soft ground anchor assembly of the embodiment of the present invention is to help the slope stability by applying a force in the underground direction to the inclined surface such as the incision, tension member (1), protective tube (2), casing (110), cover (120) ), The moving member 130, the wing piece 132, the elastic member 125, the traction block 140 is composed of.

The tension member (1) is a structure for applying a compressive force to the ground mounted on the ground in the state where the tensile force is applied, the protective tube (2) is a tube for wrapping and protecting the outer peripheral surface of the tension member (1). The protective tube 2 may prevent corrosion of the tension member 1 and, in the case of a removable anchor, may prevent the tension member 1 from being fixed by the grouting material.

As shown in FIG. 4, the casing 110 has a tubular (pipe-like) configuration in which two or more long holes 111 are formed in the longitudinal direction thereof. In the present embodiment, the number of the long holes 111 is formed four, and are each spaced 90 degrees.

The movable member 130 is provided to be movable in the longitudinal direction of the casing 110 inside the casing 110, and the second guide hole 133 is provided to pass through the protective tube 2. In the present embodiment, the number of the second guide holes 133 is four, and is provided in the same manner as the number of the tension members 1.

The blade piece 132 may be hinged to the movable member 130 to rotate relative to the movable member 130.

A portion of the wing piece 132 protrudes out of the casing 110 through the long hole 111, and four pieces are provided in the same manner as the number of the long holes 111.

The blade pieces 132 are elastically pressed in a direction away from each other by the coil spring 131.

The traction block 140 is coupled to the second guide hole 133 of the movable member 130 and provided with four sets equal to the number of tension members 1.

Each of the towing blocks 140 is a cylindrical case 141, a front end cap 142 is coupled to one end of the case 141 and coupled to the first guide hole 121 and fixed, and the case Rear end cap 143 coupled to the other end of the 141, tapered washer 144 supported inside the front end cap 142, and hollow sleeve 145 supported by the washer 144 ), A collet chuck 146 slidably coupled to the sleeve 145 and detachably coupled to an end portion of the tension member 1, and collapsing elastically when separated from the sleeve 145, and the collet chuck. An elastic rubber ring 146a coupled to the outer circumferential surface of the 146, a support cap 147 supported at the end of the collet chuck 146, an elastic body 148 supported by the support cap 147, The wiring 149 is coupled to the inner circumferential surface of the case 141.

The collet chuck 146 is composed of a plurality of splitting rods 146b to be mutually retracted and unfolded, and in a normal state, the splitters 146b are opened to allow the tension member 1 to enter and exit. . That is, in the state where the collet chuck 146 is coupled to the sleeve 145 as shown in FIG. 10, the splitters 146b are pinched to grip the tension member 1, and as shown in FIG. 12. In the state separated from the 145, the split bar 146b is opened so that the tension member 1 can be taken out.

When the traction block 140 of the present embodiment is used, it is a removable anchor, and in the case of a permanent anchor, it is only necessary to fix the underground end of the tension member 1 instead of the above-described complicated configuration.

The cover 120 is fixed to the underground end of the casing 110 and may be fixed by various methods such as welding, bolting and nut coupling, and may be integrally formed with the casing 110. In this embodiment, as shown in Figure 4 it is provided integrally.

The cover 120 is formed with a first guide hole 121 through which the towing block 140 passes. The number of the first guide holes 121 is four, the same as the number of the traction block 140 or the tension member (1).

The elastic member 125 is supported by the cover 120 to elastically press the moving member 130 in the ground direction.

In the present embodiment, the number of the first guide holes 121 is four, and the number is proportional to the magnitude of the force applied to the ground, and the word can be changed in design according to the number of the tension members 1. It means.

The anchor assembly of the above configuration is installed and operated as follows.

As shown in FIG. 5, the anchor assembly is inserted into the insertion hole 20.

At this time, the wing pieces 132 exposed to the outside of the long hole 111 is inserted into a portion of the casing 110 by the reaction generated when the friction with the insertion hole 20, as shown in FIG. Go to. Arrows shown in FIG. 7 are arrows indicating the moving direction of the anchor assembly.

On the other hand, the collet chuck 146 is held in the sleeve 145 by the restoring force of the elastic body 148 while the traction block 140 is inserted into the insertion hole 20, the grip of the tension member (1) The state is maintained.

After the insertion is completed, as shown in FIG. 8, when the tension member 1 is applied to the outlet side of the insertion hole 20, that is, in the ground direction, the blade piece 132 is embedded in the ground, and the casing 110 moves in the ground direction. It will limit what you do.

The anchor assembly is completely fixed by injecting and curing a grout (not shown), such as cement mortar, into the insertion hole 20 while the wing piece 132 is embedded in the ground as described above. Of course, if the force fixed by the blade piece 132 is sufficient to apply a tensile force to the tension member 1, grouting is not necessary, but generally grouting is generally performed.

After the grout is completely cured, a tensile force is applied to the tension member 1 and the tension member 1 is fixed on the ground side. Although it is not described about the structure which fixes the tension material 1, it is generally comprised from a bearing plate, a wedge fragment, a wedge block, etc.

Hereinafter, a description will be given of a method of removing when the tension member (1) to be removed according to the construction step.

First, a force is applied to the tension member 1 in the underground direction. Tensile force (1) is usually applied to the tensile force of 10 tons or more, so if the tensile force is simply broken, the force is naturally applied to the underground side by elastic restoring force. If necessary, the tension member (1) is hit by using a hammer or the like. . When a force is applied to the tension member 1, the collet chuck 146 moves to the right while compressing the elastic body 148 and is separated from the sleeve 145 as shown in FIG. 9, and the rubber ring 146a is connected to the wiring 149. It takes over At this time, the splitters 146b of the collie 146 are opened so that the tension member 1 can be separated and removed from the collet chuck 146. The tension member 1 is fixed by the frictional force with the splitter 146b, but in the state shown in FIG. 9, the splitter 146b may be opened without being restrained, so that the frictional force is reduced and becomes detachable.

On the other hand, as described above, the tow block 140 of the present embodiment is a tow block 140 is applied to the removable anchor and in the case of a permanent anchor may be manufactured with a more simple structure.

The anchor assembly of the present embodiment enables the removal of the tension member 1, thus preventing contamination of the rock.

In addition, since the wing pieces 132 are caught on the inner wall of the insertion hole 20 only by pulling the tension member 1, the construction is more convenient than the work in which the rectangular bar body 220 needs to be rotated in the prior art, and also conventional screw rods. When the sieve 210 is inserted into the insertion hole 20, the screw part is contaminated by stones falling from the rock, thereby eliminating the problem that the screw tightening operation is not desired.

While the above has described the specific contents for carrying out the present invention by describing the preferred embodiment of the present invention, it can be implemented in various forms of anchor assembly within the scope not departing from the technical idea of the present invention.

110 Casing 111 Long
120 ... cover 121 ... first guide hole
130 ... moving member 132 ... wing
125 ... elastic member 140 ... towing block

Claims (2)

In the soft ground anchor assembly is inserted into the insertion hole drilled in the soft ground,
A protective tube (2) surrounding the tension member (1) and the outer peripheral surface of the tension member (1);
A tubular casing 110 having two or more long holes 111 formed in a longitudinal direction on a surface thereof;
A moving member 130 provided to be movable in the longitudinal direction of the casing 110 in the casing 110 and having a second guide hole 133 through which the protective tube 2 passes;
Two or more wing pieces 132 protruding out of the casing 110 through the long hole 111 and hinged to the moving member 130;
A traction block 140 having one end coupled to the second guide holes 132 and holding or releasing the end of the tension member 1;
A cover 120 fixed to the base end of the casing 110 and having a first guide hole 121 penetrating the traction block 140;
And an elastic member 125 which is supported by the cover 120 and presses the movable member 130 in the ground direction.
When the casing 110 is inserted into the insertion hole, the casing 110 rotates toward the long hole 111 by a reaction generated during friction with the insertion hole, and after the insertion of the casing 110 is completed, the casing 110 is grounded. When the force is applied to the ground, the anchor assembly for the soft ground, characterized in that to prevent the casing 110 from moving in the ground direction by being embedded in the ground. The method of claim 1,
The towing block 140 is a cylindrical case 141, a front end cap 142 is coupled to one end of the case 141 and coupled to the first guide hole 121 and fixed, and the case 141 And a rear end cap 143 coupled to the other end of the head), a tapered washer 144 supported inside the front end cap 142, and a hollow sleeve 145 supported by the washer 144. A collet chuck 146 slidably coupled to the sleeve 145 and detachably coupled to an end of the tension member 1, and collapsing elastically when separated from the sleeve 145, and the collet chuck 146. Elastic rubber ring 146a coupled to an outer circumferential surface of the c), a support cap 147 supported at the end of the collet chuck 146, an elastic body 148 supported by the support cap 147, and the case The anchor assembly for the soft ground, characterized in that it is provided with a wiring (149) coupled to the inner peripheral surface of the (141).

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