KR101757975B1 - Anchor having a fixing device at a side of pressure plate to depress the land slope and method of installing the same - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil structure for reinforcing slopes, and more particularly, to an anchor provided with a fixing member on the side of a hydraulic pressure plate for pressing a slope and a construction method for constructing the anchor on a slope.
A friction type hydraulic pressure plate side fixing body integrated with a hydraulic pressure plate in the form of a steel pipe pipe is provided on the hydraulic pressure plate side of the anchor, A packer is installed to fix the anchor end side fixing body by press grouting, and then a large pressure plate for pressing the slope is pressed together with a tensile force applied to the tensile member of the anchor together with the pressure plate side fixing body, the secondary packer is inflated, There is provided an anchor provided with a fixing member on the pressure plate side for pressing a slope preventing secondary pressure grouting to prevent loss of an anchor tensioning force.

Description

[0001] The present invention relates to an anchor provided with a fixing member on a pressure plate side for pressing a slope, and an anchor having a fixation member on the side of the pressure plate for pressing the slope,

More particularly, the present invention relates to an anchor provided with a fixing member on a side of a pressure receiving plate for pressing a slope, and an anchor construction method for mounting the anchor on a slope.

In general, cut slopes or embankment slopes often occur in civil engineering works such as roads, railways, embankments, entrance and exit of tunnels, and apartment complexes. Sliding and erosion occur in slope slope or embankment slope, and environmentally friendly slope strengthening method which is in harmony with the natural environment has been demanded.

The soil nailing method, which has been conventionally applied by such a slope reinforcing method, has a problem in that the nail needs to be reinforced more than the structure of reinforcing the slope by the frictional force of the nail.

Reinforced concrete retaining wall has been mainly used as another slope reinforcement method. However, there is a disadvantage that installation of reinforced concrete structure is costly and time consuming. Therefore, anchors are installed and installed integrally with retaining walls. However, such a reinforcing method also has a disadvantage in that it takes a lot of cost in the work of crushing and embankment, and that the entire structure becomes large.

When the slope is cut off, the stress distribution is changed and the groundwater level is lowered and the ground subsides. This phenomenon occurs remarkably in relatively soft soils and weathered rocks. Therefore, even if the anchor is installed while the slope is being excavated and the slope is pressed by the large hydraulic pressure plate, the tension of the anchor is lost due to the settlement of the hydraulic pressure plate over time.

In addition, in the regions where the four seasons are clear, the soil layer is weakened by repeated freezing and thawing, resulting in the problem that the tension plate of the anchor is lost due to the pressure plate being continuously pressed.

An object of the present invention is to solve the above problems of the prior art, and it is an object of the present invention to provide a friction type fixing member in the form of a steel pipe integrated with a pressure plate on the tension side of an anchor, After fixing the front end side fixing member by press grouting, a large hydraulic pressure plate for pressing the slope is pressed together with a tensile force applied to the tensile member of the anchor together with the pressure plate side fixing member, the secondary pressure packer is inflated, And an anchor provided with a fixing member on the side of the pressure receiving plate for pressing a slope for preventing a loss of a tension force of the anchor, and a method of installing the anchor.

In order to accomplish the above object of the present invention, the present invention provides an anchor comprising a pressure plate installed for pressing a slope, a paper sheet, and a tensile member for connecting a front end side fixing member fixed by grouting and introducing a tensile force, A primary packer installed in the middle of the tensile material, a secondary packer mounted on the pressure plate side fixing member, and a pressure plate capable of exhibiting a supporting force even on the soft ground slope behave as one unit for primary grouting and fixing And a pressure plate side fixing member coupled to the pressure plate compression ring configured to be fixed by secondary grouting after the secondary packer expansion.

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In case of installing a friction type hydraulic plate side fixture which is integrated with the hydraulic pressure plate at the side of the hydraulic pressure plate of the anchor, the phenomenon that the soil is repeatedly frozen and thawed at the four seasons, Side fixing member, it is possible to prevent settlement from the sea.

Even in the case of the soft ground which can not withstand the pressure of the hydraulic pressure plate, the friction type fixing member of the pipe type of pipe has the effect of reinforcing the supporting force of the soft ground by the frictional force.

In addition to the lowering of ground water level and the change of stress due to cutting, by installing a friction type hydraulic plate side fixture integrated with a hydraulic pipe plate integrated with the hydraulic pressure plate from the slope, additional settlement of the pressure plate subjected to continuous compression and prevention of tension loss of the anchor .

In addition, the pressure plate side fixture has the effect of acting like a nailing, and the pressure plate is fixed to the friction type pressure plate side fixture of the pipe type of pipe, so that the tensile force is not deformed, There is a possible effect.

FIG. 1 is a view showing a state in which a pressure plate is pressed by an anchor provided with a fixing member on a pressure plate side for pressing a slope according to the present invention.
2 is a view showing the pressure plate side fixing member in a separated state.
Fig. 3 is a diagram showing the friction type front end side fixing member of the anchor of the present invention.
Fig. 4 is a cross-sectional view taken along line AA of Fig. 1, and is a sectional view of the position at which the bag base packer is mounted in a state in which the front end side fixing member 6 is fixed by grouting and the pressure plate side fixing body 5 is provided in the perforation hole.
Fig. 5 is a cross-sectional view taken along the line BB in Fig. 1, showing a first injection hose 12, a first hopper injection hose 11, a discharge hose 14 and a tension member 9 ), And a secondary injection hose (13).
Fig. 6 is a cross-sectional view taken along line CC of Fig. 1 showing the front end side fixing member 6. Fig.
FIG. 7 is a view showing a hose cutter installed at an angle of 40 to 50 degrees on a long iron rod, and a hose cutter configured to cut a hose by cutting a hose into a hole when a sharp blade is formed inside a hollow iron plate.
8 is a view showing an embodiment of various types of pressure plates.

Hereinafter, an anchor according to the present invention will be described in detail with reference to the accompanying drawings.
The term " fixation member "refers to a fixation member at the right end of FIG. 1 as the" fixation member at the end side " , And the fixture with the left pressure plate and the head is defined as the "pressure plate side fixture" (5). In the present invention, the term "soft ground" refers to a ground on which a hydraulic plate is settled by long-term anchor tension due to weathering or weathering of the exposed portion of the slope.

1 to 8 are views showing the entirety of an anchor 50 according to the present invention in which an anchor is inserted into a perforated hole 22 and grouted to press the pressure plate 1 against a slope. The same reference numerals are assigned to the same portions throughout the drawings.

Fig. 1 is a view entirely showing an anchor 50 according to the present invention. In Fig. 1, a pressure plate 1 installed for pressing a slope is connected to a front end side fixing member 6 fixed by grouting, A primary packer 7 installed in the middle of the tensile material 9 for primary grouting and fixing the front end side fixing member 6 and a pressure sensor 7 for fixing the front end side fixing member 6 to the pressure plate side fixing member The secondary packer 8 is fixed to the secondary packer 8 by secondary grouting after the secondary packer 8 has been inflated so as to act integrally with the hydraulic pressure plate 1 capable of exhibiting a supporting force even on the soft ground slope And further comprises a pressure plate side fixing body (5) coupled to the pressure plate compression ring (4).

The anchor 50 according to the present invention is characterized in that the anchor head 2 formed on both side ends of the tensile material 9 and the tensile material 9 longer than the length of the perforated hole 22 and the thickness of the pressure plate 1, (1) for pressing a slope on the left side of the tensile material (9), and a pressure plate (1) for pressing the slope on the left side of the tensile material (9) Side fixing member 5 coupled to the pressure-receiving plate pressing ring 4 fitted to the hole 19 of the pressure plate-side fixing member 5 by welding or a coupling means such as a screw, Side fixer 7 positioned at an intermediate position between the tension member 9 and the side fixer 6 and a pair of side wall portions 7a and 7b which are sandwiched between the tension members 9 on both sides of the primary packer 7, A second injection hose 13 provided inside the anchor 50 and a second injection hose 13 provided on the pressure plate side fixing member 5 ) Corresponding to The primary packer injection hose 11, the primary injection hose 12, the discharge hose 14 and the secondary packer injection hose 16 extending over the single-side fixing member 6, and a tubing cutter 21 for cutting the temporary packer, the primary injection hose (12) to prevent the compression ring.

The tensile material 9 is composed of a single wire or a plurality of wires and is covered with a PE pipe 24 so that the cement grouting can be stretched when the wire is stretched after the cement grouting. Herein, it is illustrated that a tensile material 9 composed of four sets is installed.

2, a flange-shaped pressure plate compression ring 4 is coupled to the tip of a steel pipe 18 by welding or by a coupling means such as a screw, so that the pressure of the water pressure applied to the pressure plate hole 19 When the plate compression ring 4 and the fixture in the form of a steel pipe are used to tension the tension member 9 by using the anchor head 2, At this time, the pressure plate compression ring 4 may be formed not only in a circular shape but also in various shapes such as a square shape and a hexagonal shape.

The steel pipe 18 of the pressure plate side fixing body 5 is formed so as to have a large frictional force by forming grooves on the outside thereof and is formed so as to extend from the secondary packer 8 to the outside of the steel pipe at the time of grouting, A second pipe hose 17 is formed on the outside of the nonporous pipe section and a second discharge hose passing through the second packer injection hose and the packer in the form of a bag packer is formed. The tea packer injection hose is installed through the pipe. In a more preferred embodiment, the secondary packer is provided with a primary injection hose 12 and a primary packer injection hose 11, which are filled with a hose cutter 21 by a hose cutter 21, Cut at a depth of about 2 m from the hole to constitute the pressure plate side fixing body 5 having only the second-order packer.

3 shows a friction type in which the anchor head 15 fixes the tension member 9 and the fixing member on the outside of the tension member 9 is in contact with the pressure- Various types of fixing members such as a composite type of a fixing member can be applied.

Fig. 4 is a cross-sectional view taken along the line AA of Fig. 1, showing a cross-sectional view of the position where the secondary side bag packer is mounted in a state where the front side fixing member 6 is fixed by grouting and the pressure plate side fixing body 5 is provided in the perforation hole 22. to be.

Fig. 5 is a sectional view taken along the line BB in Fig. 1, showing a first bag packaging machine for first grouting and fixing the front side fixture 6, a first injection hose 12 and a first packer injection hose 11, A tensile member 9, and a secondary injection hose 13, as shown in Fig.

Fig. 6 is a cross-sectional view taken along line CC of Fig. 1 showing the front end side fixing member 6. Fig.

7 is a hose cutter 21, which is installed at an angle of 40 to 50 degrees, preferably about 45 degrees, on the long rod 23, and the inner side of the hollowed iron plate is formed with a sharp blade, 12 and the discharge hose 14 are inserted into the hole and pulled out, the injection hoses 11, 12 and the discharge hose 14 are cut and cut. Is used to cut the injection hoses (11, 12) and the discharge hose (14) in the perforation hole (22).

FIG. 8 is a view showing various types of pressure plates 1 such as a cross, a square, etc., and the cross-shaped pressure plates 1 may be connected to each other by a lattice.
An anchor composed of a pressure plate (1) installed for pressing a slope and a tensile material (9) for connecting a paper sheet and a front side fixing member (6) fixed by grouting to introduce a tensile force, A primary packer 7 installed in the middle of the tensile material 9 for primary grouting and fixing of the primary plate 6 and a secondary packer 8 mounted on the pressure plate side fixture 5, Side fixing member 5 coupled to a hydraulic pressure compression ring 4 configured to be fixed by secondary grouting after expansion of the secondary packer 8 in order to act integrally with the hydraulic pressure plate 1 capable of exerting pressure on the pressure- .

The main technical idea and feature of the present invention is that when the slope is cut, the constrained stress is released, the stress distribution is changed, the ground water level is lowered, and the soft ground is plastic deformed. This phenomenon occurs remarkably in relatively soft soils and weathered rocks. Therefore, even if the anchor 50 is installed while the slope is being excavated and the slope is pressed by the large hydraulic pressure plate 1, the tensile force of the anchor 50 is lost as the pressure plate 1 is depressed with time, .

In addition, in the region where the four seasons are clear, the soil is repeatedly frozen and melted and weakened, so that the tension of the anchor (50) is lost as the hydraulic plate (1)

In order to solve such a problem, a friction type pressure plate side fixing body 5 in the form of a steel pipe pipe integrated with the pressure plate is provided on the tensile side of the anchor 50 to prevent loss of the tension of the anchor 50. [

The primary packer 7 is provided at an intermediate portion of the anchor 50 to fix the anchor end fixing member 6 by press grouting and fix the large hydraulic pressure plate 1 for pressing the slope surface to the pressure plate- The tensile force is applied to the tensile member 9 of the anchor together with the sieve body 5 and is compressed and then the secondary packer 8 is inflated and the secondary pressure grouting is completed.

A perforation hole 22 is formed in a slope having soft ground conditions such as sand and weathered rock and an anchor 50 having a front end side fixing member 6 and a tension member 9 joined thereto is inserted Grouting to the portion where the primary packer 7 is mounted in the middle portion of the anchor 50 for grouting the fixation member 6 at the tip side of the anchor;

Inserting the pressure plate 1 into the tensile member 9 of the anchor and inserting the pressure plate side fixing member 5 with the pressure plate fixing ring 4 into the through hole 22 by inserting the pressure plate side fixing member 5 into the tension member 9;

Expanding the secondary packer (8) mounted on the pressure plate side fixing body (5);

Installing the anchor head (2) on the hydraulic plate (1) and tensioning the tensile material (9);

And a second grouting step.

The second embodiment is different from the first embodiment in that the anchor 50 integrally assembling the front end side fixing member 6 with the tension member 9 and the pressure plate side fixing member 5 in a slope is inserted into the perforation hole 22, Expanding the packer to perform grouting;

Screwing the pressure plate (1) after inserting the pressure plate (1) into the fixing member (5)

And tensioning and fixing the anchor tensile material 9 protruding from the hydraulic pressure plate hole 19 by using the anchor head 2.

The above-described pressure plate side fixing body (5) has a pressure plate compression ring (4) welded or screwed in the form of a flange to a front end of a steel pipe, a pressure plate compression ring (4) Side fixing member 5 of the tension member 9 is constructed so as to behave integrally when the tension member 9 is tensioned by the hydraulic jack using the anchor head 2. [

The steel pipe 18 of the pressure plate side fixing body 5 is formed so as to have a large frictional force by forming grooves on the outside thereof and is formed so as to receive the filling material inside the steel pipe 18 at the time of grouting, A secondary pipe hose 17 is formed in the secondary pipe packer 8 and a secondary discharge hose 16 which penetrates the secondary pipe packing hose 16 as a bag packer and a packer is formed outside the non- 12 and a primary packer injection hose 11 are installed to pass through. A more preferred embodiment is a method for preventing the leakage of the packer by inserting the primary injection hose 12 and the primary packer injection hose 11 into which the primary injection has been completed with the hose cutter 21 into the perforation hole 22 with the hose cutter 21, At a depth of about 2 m. By cutting the hoses as described above, the primary packer injection hose 11 and the primary injection hose 12 do not penetrate through the secondary packer 8, thereby constituting the secondary packer 7 simply, (8) can be easily constructed. In the secondary grouting, a temporary packer is installed in a pressure plate compression ring of the pressure plate side fixing body (5) without a discharge hose to inject the grout liquid. The secondary packer 8 may be omitted for the ground in which the pressure plate 1 and the slopes are pressed together during the secondary injection.

The end fixing member 6 can use various conventional fixing members. 3 is a view showing a frictional type as the front end side fixing member 6 of the anchor 50. The front end side anchor head 15 serves to fix the tensile material 9 and the tensile material external to the anchor head 2 The steel pipe type fixing body 20 of the present invention can be applied in place of various types of fixing members such as a pneumatic type, a pneumatic type and a friction type combined type.

The method of designing the anchor should be designed such that the pressure plate and the pressure plate side fixture have a larger supporting capacity than the tensile load of the tensile material, and the tip side fixer should also be larger than the load applied to the tensile material.

1: Hydraulic plate 2: Anchor head
3: Anchor cap 4: Hydraulic pressure ring
5: pressure plate side fixing member 6: front end side fixing member
7: Primary Packer 8: Secondary Packer
9: tensile material 10: shrinkage tube
11: primary packer injection hose 12: primary injection hose
13: Secondary injection hose (inside of anchor) 14: Discharge hose
15: Tip side anchor head 16: Secondary packer injection hose
17: steel pipe hole 18: steel pipe
19: pressure plate hole 20: steel pipe type fixing body
21: Hose cutter 22: Perforation hole
23: long rod 24: PE tube
50: Anchor

Claims (8)

An anchor composed of a pressure plate (1) installed for pressing a slope and a tension member (9) for connecting a paper sheet and a front side fixing member (6) fixed by grouting to introduce a tensile force,
A primary packer 7 installed in the middle of the tensile material 9 for primarily grouting and fixing the front end side fixing member 6,
The pressure plate side fixing member (4), which is coupled to the hydraulic pressure compression ring (4) configured to be fixed by secondary grouting after expansion of the secondary packer (8) to act integrally with the hydraulic pressure plate (5). The anchor for pressing a slope provided with a fixing member on a side of a pressure receiving plate.
The method according to claim 1,
Wherein the pressure plate compression ring (4) is coupled to the pressure plate side fixing body (5) by welding or by a coupling means such as a screw, an anchor for pressing the slope provided with the fixing body on the pressure plate side.
The method according to claim 1,
The steel pipe of the pressure plate side fixing body (5) is provided with a steel pipe hole (17) in the front end steel pipe from the second packer (8) so that the injection material in the steel pipe during grouting is also injected to the outside of the steel pipe. An anchor for pressing a slope provided with a fixing body.
The perforation hole 22 is formed on the slope of the soft ground condition and the anchor 50 with the front end side fixing member 6 and the tension member 9 is inserted and then the front end side fixing member 6 of the anchor is grouted Expanding the primary packer 7 in the middle portion of the anchor 50 to grout to the portion where the primary packer 7 is mounted,
The pressure plate 1 is installed on the tensile material 9 of the anchor 50 and the pressure plate side fixing body 5 to which the pressure plate compression ring 4 is coupled is inserted into the perforation hole 22 Installing;
Expanding the secondary packer (8) mounted on the pressure plate side fixing body (5);
Installing the anchor head (2) on the hydraulic plate (1) and tensioning the tensile material (9);
And performing secondary grouting on the pressure plate side fixing member (5). The method of claim 1, wherein the fixing member (5)
The anchor 50 integrally assembled with the fixing member 6 on the leading end side, the tension member 9 and the pressure plate side fixing member 5 is inserted into the perforation hole 22 and the primary packer 7 is expanded Steps of grouting:
Screwing the pressure plate (1) after inserting the pressure plate (1) into the fixing member (5)
A step of tensioning and fixing the anchor tensile material 9 projected to the hydraulic pressure plate hole 19 using the anchor head 2 and covering the anchor cap 3:
And performing secondary grouting on the pressure plate side fixing member (5). The method of claim 1, wherein the fixing member (5)
The method according to claim 4 or 5,
The primary packer injection hose 11, the primary injection hose 12 and the discharge hose 14 used are connected to the hose cutter 21 (see FIG. 1) when the primary grouting is performed before the secondary grouting is performed on the pressure- The method according to any one of claims 1 to 5, further comprising the step of cutting the slab with a fixing member on the side of the pressure receiving plate.
The method of claim 6,
The hose cutter 21 is installed on the long bar 23 at an angle of 40 to 50 degrees and a sharp blade is formed inside the perforated metal plate so that the injection hoses 11 and 12 and the discharge hose 14 are inserted into the holes , The injection hose (11, 12) and the discharge hose (14) are cut and cut so that the injection hose (11, 12) and the discharge hose (14) are cut and cut.
The method according to claim 1,
Further comprising a secondary packer (8) mounted on the pressure plate side fixing body (5). An anchor for pressing a slope provided with a fixing member on a pressure receiving plate side.

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