KR101033269B1 - Pressure expanded type anchor end fixation - Google Patents

Abstract

PURPOSE: A pressure expanded type anchor anchorage is provided to improve the structural stability of a retaining wall or the ground of a slope by improving the supporting force of an anchor. CONSTITUTION: A pressure expanded type anchor anchorage comprises anchorages(20) and protruded bars(30). Each anchorage has an inlet and a coupling hole. Strands(15) of anchors are coupled to the inlets. A conveying pipe(16) is connected to each inlet. The coupling holes are connected to the inlets. The outer diameter of the protruded bar is the same as the inner diameter of the coupling hole. The protruded bars are protruded from the coupling holes.

Description

PRESSURE EXPANDED TYPE ANCHOR END FIXATION}

The present invention is embedded in the back ground of the retaining wall, the attachment portion and the back ground of the vertical shaft earth wall (10), or the cut and embankment slope ground to support the wall and slope pressure plate of the retaining wall and the earth wall (10), etc. Regarding the fixing fixture (20), the pressure pipe (16) in a state in which the protruding rod 30 is coupled to the coupling hole (21) formed in the fixing fixture (20) and the fixing fixture (20) is inserted into the ground anchor hole By compressing the compressed air or the main liquid (注 膠液) into the fixing unit 20 through the) to the protrusion rod 30 is projected and deployed, the anchor fixing unit 20 is to be firmly fixed to the surrounding ground.

The anchor for construction work embedded in the back ground or the slope ground of the retaining wall and the earth wall 10 is anchored to the end of the strand (15) and the strand (15) to be inserted into the anchor hole as shown in FIG. The case shown in the drawing is a typical earth wall 10, which is fastened to the end of the strand 15, the anchorage 20 and the other end is fastened to the earth wall (10) acting on the earth wall (10) It resists back soil pressure.

The earth wall 10 and the anchor shown in FIG. 1 are constructed by first entering the bottom of the earth wall 10 into the ground, and then constructing the anchor hole, and injecting the stranded wire 15 to which the anchorage 20 is joined. It is constructed by injecting the main liquid such as cement paste or water glass in the state and integrating the strands 15 in front of the earth wall 10 at the same time to bind to the auxiliary facilities such as the earth wall 10 or the bracket in a tensioned state.

The anchorage 20 formed at the tip of the anchor not only has an enlarged cross section compared to the entire strand 15, but also serves as a fixture after smooth injection of the strand 15 and solidification of the main injection as a kind of heavy material. After the fixing unit 20 is put into the ball, the fixing unit 20 may be sliding in the anchor hole in the process of performing a subsequent process such as positioning and bishop, and thus, there is a problem in that the desired supporting effect cannot be obtained.

In particular, the activity of the anchor hole in the anchor hole 20 is not only very difficult to observe from the outside, and once the bishop is carried out, since the post-action is virtually impossible, it acts as a major difficulty in anchor construction.

The present invention has been made in view of the above-described problems, in the anchoring anchorage 20 embedded in the ground, the inlet port 25 is connected to the anchorage pipe 16 is connected to the anchorage anchorage (15) is connected to the anchor wire (15) And a coupling hole 21 connected to the inlet 25, and a protrusion bar 30 having an inner diameter and an outer diameter of the coupling hole 21 coupled to the coupling hole 21 is coupled to the pressure feeding pipe 16. As the fluid pressure is applied through the inlet 25, the protruding rod 30 protrudes out of the coupling hole 21.

In addition, the engaging jaw 22 is formed at the outer end of the coupling hole 21 of the fixing unit 20, the protruding rod 30 is an enlarged diameter portion 31 is formed at the center side end of the fixing unit 20 and the other end is Consists of a closed tube, the ejection hole 32 for connecting the inside and outside of the protruding rod 30 is formed on the outer circumferential surface, the main fluid through the pressure feed pipe 16 and the inlet 25 As the pressure is protruded, the protruding rod 30 protrudes out of the coupling hole 21, and the protruding rod 30 is formed by the enlarged diameter portion 31 of the protruding rod 30 and the engaging jaw 22 of the coupling hole 21. Decompression of the coupling hole 21 is suppressed, and the pressure-developing anchor anchor is characterized in that the ejection fluid is ejected as the ejection hole 32 of the protruding rod 30 is exposed to the coupling hole 21 outside.

In addition, the engaging jaw 22 is formed at the outer end of the coupling hole 21 of the fixing unit 20, and the protruding rod 30 has an enlarged diameter portion 31 formed at the center side end of the fixing unit 20, and the other end thereof is formed. Consists of a closed tube (pipe body), the ejection hole (32) connecting the inside and outside of the protruding rod (30) is drilled at the closed end of the protruding rod (30), traversing the inside of the protruding rod (30) An open barrier rib 35 is formed, and a blocking plate 37, which is in close contact with the barrier rib 35 by a spring 38, is installed between the barrier rib 35 and the jet hole 32, and the pressure feed pipe 16 and As the main injection liquid is pushed through the inlet 25, the protruding rod 30 protrudes out of the coupling hole 21, and the main injection liquid presses the blocking plate 37, thereby blocking the blocking plate 37. It is a pressure-developed anchor anchor, characterized in that the spring 38 is overcome by the elastic force and is spaced apart from the partition wall 35 to eject the main fluid into the jet hole 32.

Through the present invention it is possible to significantly improve the bearing capacity of the anchor, thereby ensuring the structural stability of the retaining wall, earth wall 10 or slope ground.

In particular, since the anchor anchorage 20 can be maintained not only in the completed state but also in the process of anchoring, anchoring, bishop and solidification after the start of the anchor hole, the construction stability and convenience can be improved. Can be.

1 is a view illustrating a conventional anchor installation state
2 is a perspective view of the present invention
Figure 3 is an exploded perspective view of a partially cut away embodiment of the right angle protrusion of the present invention
Figure 4 is an exploded perspective view of a partial cut of the oblique protrusion embodiment of the present invention
5 is a representative cross-sectional view of the embodiment of FIG.
Figure 6 is an exploded perspective view of an embodiment of the present invention to which the ejection hole is applied
Figure 7 is a representative cross-sectional view of the operating state of the Figure 6 embodiment
8 is an exploded perspective view showing an embodiment of the present invention to which an openable blowhole is applied;
9 is a representative cross-sectional view of an operating state of the FIG. 8 embodiment;

Detailed configuration and operation of the present invention will be described with reference to the accompanying drawings.

First, Figure 2 is a perspective view showing the appearance of the present invention, the embodiment shown in the upper side of the figure is an embodiment in which the protruding rod 30 is projected perpendicular to the central axis of the anchorage 20, the embodiment shown in the lower An example is an embodiment in which the protruding rod 30 protrudes inclined to the central axis of the fixing unit 20.

3 and 4 are partial cutaway exploded perspective views showing the vertically projecting and the obliquely projecting embodiments, respectively, as can be seen from the same drawing, the present invention provides the anchor line 15 of the anchoring unit and the pressure pipe ( 16 consists of an inlet 25 to which the inlet 25 and a coupling hole 21 connected to the inlet 25 are formed, and a protruding rod 30 in which the inner and outer diameters of the coupling hole 21 coincide. .

In the illustrated embodiment, the strand 15 is once bound to the anchorage 20 and a separate binding portion 17 and the binding portion 17 is screwed with the anchorage 20 so that the stranded wire 15 and the anchorage ( 20 is connected, and the pressure feed tube 16 is fastened to the inlet 25 formed at the rear end of the fixing unit 20 through the center of the binding unit 17.

As shown in FIG. 5, the fluid pressure applied from the outside through the pressure feed tube 16 acts on the coupling hole 21 via the inlet 25, and the protruding rod 30 is fixed to the anchorage 20 by the fluid pressure. If the anchor hole is excessively ground or the protruding rod 30 is completely penetrated into the surrounding ground, and the anchoring hole 21 is completely separated, the expected fixing effect cannot be expected. As a means for preventing, the locking jaw 22 and the enlarged diameter portion 31 are formed in the coupling hole 21 and the protruding rod 30, respectively.

That is, as shown in FIGS. 3 and 4, at the outer end of the coupling hole 21 of the fixing unit 20, a locking jaw 22 having an inner diameter reduced in an annular shape is formed, and the fixing unit 20 of the protruding rod 30 is formed. At the center side end portion, an enlarged diameter portion 31 having an outer diameter is also annularly expanded, whereby the enlarged diameter portion 31 of the protruding rod 30 protruding by the fluid pressure is caught by the engagement hole 21. The protrusion stops when caught.

The fluid pressure protruding the protruding bar 30 may include compressed air or a high pressure jet liquid, and when operated with compressed air, a separate grouting should be performed on the anchor hole. As in, forming the ejection hole 32 in the protruding rod 30, and when the injection of the injection liquid into the pressure pipe 16, the protruding rod 30 is protruded as well as the injection fluid through the ejection hole (32) 20) Erupted outside, the settlement and bishops can proceed simultaneously.

In this case, as shown in Figure 6 and 7, the protruding bar 30 is composed of a tubular body (pipe), the end of the center side of the anchorage opening 20 formed with the enlarged diameter portion 31 is opened and the other end is closed, The ejection hole 32 connecting the inside and the outside of the protruding rod 30 to the outer circumferential surface near the enlarged diameter portion 31 is drilled, and when the protrusion of the protruding rod 30 is completed as shown in FIG. The injection fluid is ejected while being exposed to the outside of the coupling hole 21 of (20).

As shown in Figure 6 and 7, in the process of projecting the rod 30 as the main liquid is pumped through the pressure feed pipe 16 and the inlet 25, the protrusion bar 30 After the enlarged diameter portion 31 reaches the engaging jaw 22 of the coupling hole 21, the position of the ejection hole 32 should be set near the enlarged diameter portion 31 so that the ejection hole 32 is exposed. Sufficient protrusion of the protruding rod 30 can be achieved.

However, if there is a rock or hard ground around the anchorage 20, the protruding rod 30 may not protrude completely, which is a serious bishop due to blocking of ejection fluid as well as a simple protruding defect of the protruding rod 30. It may cause a defect.

Thus, in the present invention, as shown in Figures 8 and 9, by forming a cut-off panel 37 which is depressurized by the spring 38 in the protruding bar 30, the protruding bar 30 is not completely protruded. In order to prevent the bishop's failure, the bishop's fluid could be ejected even if it was not.

That is, as shown in Figure 8, the closed end of the protrusion bar 30 punctures the blow holes 32 connecting the inside and outside of the protrusion bar 30, the partition wall crossing the inside of the protrusion bar 30 and the center is open And forming a block 35 between the partition 35 and the ejection hole 32 to be in close contact with the partition 35 by a spring 38 to enlarge the diameter of the protruding rod 30. When the 31 is caught by the engaging jaw 22 of the coupling hole 21 or the protrusion of the protruding rod 30 is suppressed by an external factor such as a rock as shown in FIG. As the pressure is applied, the blocking plate 37 overcomes the spring force of the spring 38 and is spaced apart from the partition wall 35 to open, and the main injection liquid introduced between the blocking plate 37 and the opening of the partition wall 35 is ejected. It is to be ejected through the ball (32).

10: earth wall
15: stranded wire
16: pressure feed pipe
17: binding unit
20: anchorage
21: combined holes
22: jamming jaw
25: inlet
30: protrusion bar
31: enlarged neck
32: blowout
35: bulkhead
37: blocking panel
38: spring

Claims (3)

delete delete Anchor anchorage 20 is embedded in the ground, the anchoring wire 20 is anchored in the anchorage 20 is coupled to the inlet port 25 and the inlet port 25 is connected to the inlet port 16 is connected to the pressure feed pipe 16 The protruding rod 30 having the inner diameter and the outer diameter of the coupling hole 21 is coupled to the coupling hole 21, and a fluid pressure is applied through the pressure feeding pipe 16 and the inlet port 25. In the pressure-developed anchor anchoring protrusion bar 30 is projected to the outside of the coupling hole 21,
A locking jaw 22 is formed at an outer end of the coupling hole 21 of the fixing unit 20;
Protruding rod 30 is an enlarged diameter portion 31 is formed at the center side end of the anchorage 20 and the other end is composed of a closed tube, the closed end of the protruding rod 30, the protruding rod 30 A jet hole 32 connecting the inside and the outside is drilled, and a partition wall 35 is formed to traverse the inside of the protruding rod 30 and the center is opened, and a spring 38 is formed between the partition wall 35 and the jet hole 32. Blocking plate 37 which is in close contact with the partition wall 35 is installed by the), the protruding rod 30 is coupled as the main liquid is pumped through the pressure feed pipe 16 and the inlet 25 (21) protrudes outward, and as the main injection liquid pressurizes the blocking plate 37, the blocking plate 37 overcomes the spring force of the spring 38 and is spaced apart from the partition wall 35 so that the main injection liquid is blown out ( Pressurized deployment anchor anchor, characterized in that it is ejected.

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