JP4764153B2 - Anchor and its construction method - Google Patents

Description

  The present invention relates to an anchor that prevents a slope from collapsing by driving a bar-shaped anchor with a mortar into an inclined surface or the like covered with mortar such as a cliff.

As shown in FIG. 13, the conventional anchor has a drill (2) drilled in a vertical surface covered with mortar A (1), a hose (3) in the hole, and the mortar from the tip of the hole. When the hose is pulled out while injecting B (4), the mortar B is clogged in the hole.
Therefore, as shown in FIG. 14, a lid (7) with a round steel (6) attached is inserted into the disc (5) to cover it.

Since such a conventional anchor has a structure in which a thin round steel is contained in a rod-shaped mortar, it has been difficult to prevent the soil from collapsing.
Therefore, the present invention provides the anchor with strength to prevent the soil from collapsing.

Therefore, instead of attaching round steel to the lid, we decided to attach a square pipe or a twisted square pipe . FIG. 1 shows the square pipe (8). On the four sides of the square pipe, there are holes 1 (9) on the upper surface, holes 2 (10) on the right side, holes 3 (11) on the lower side, and holes 4 ( 12), and so on, the holes are spirally formed while shifting the pitch. Therefore, as shown in FIG. 2, it was decided to attach this square pipe to the lid A (14) having a hole A (13) through which the hose passes in the center. The torsion angle pipe will be described later.

  Next, the construction method using this square pipe is shown in FIG. 2. A hole (2) is drilled in a vertical surface covered with mortar A (1), and the square pipe ( 8) Place the item with the attached item and position it. Next, as shown in FIG. 3, the hose (3) is put into the hole A (13), and the mortar B (4) is injected from the end of the hole. At this time, since the mortar B flows out from the hole of the square pipe, the mortar B inside and outside the square pipe is clogged from the tip of the hole while being joined through the hole formed in a spiral shape. When the hose is finally pulled out, the mortar B becomes a solid material and is clogged in the hole.

  Therefore, finally, as shown in FIG. 4, the lid (7) having the round steel (6) attached to the disk (5) is inserted into the hole A (13) and the lid is closed.

The conventional anchor had a structure in which a thin round steel was contained in a rod-shaped mortar. However, instead of a thin round steel, a square pipe with holes on four sides or a torsion square pipe was used. The mortar and the square pipe or the twisted square pipe are strongly bonded, the strength of the rod-shaped mortar is increased, and the strength of the mortar becomes much stronger than before, and the soil can be prevented from collapsing.

First, as a first embodiment, an embodiment based on claim 2 using a square pipe will be described.

  As described above, FIG. 1 shows a square pipe (8). On the four sides of the square pipe, there are holes 1 (9) on the upper surface, holes 2 (10) on the right side, holes 3 (11) on the lower side, and holes 3 (11) on the left side. Holes 4 (12) are spirally formed while shifting the pitch. This hole is for the purpose of increasing the strength of the square pipe when the mortar is injected, the mortar inside and outside of the square pipe is joined to wrap the square pipe. Although various arrangements of holes can be considered outside, the holes are arranged in a spiral shape in this embodiment. Therefore, as shown in FIG. 2, the square pipe (8) is attached to the lid A (14) having a hole A (13) through which the hose passes.

FIG. 2 shows a construction method based on claim 2 using this square pipe. A hole (2) is drilled in a vertical surface covered with mortar A (1), and a lid A is placed in the hole. (14) Put the object with the square pipe (8) attached and position it. Next, as shown in FIG. 3, the hose (3) is put into the hole A (13), and the mortar B (4) is injected from the end of the hole. At this time, since the mortar B flows out from the hole of the square pipe, the mortar B inside and outside the square pipe is clogged while being joined through the hole formed in a spiral shape. Therefore, as shown in FIG. 4, the lid (7) having the round steel (6) attached to the disk (5) is inserted into the hole A (13) and the lid is closed.

Next, as a second embodiment, an embodiment based on claims 1 and 3 using a twisted angle pipe will be described. In Example 2, instead of the square pipe of Example 1, a twisted square pipe was used. As a result, in Example 2, the bond between the square pipe and the mortar B became stronger.

Here, the twisted square pipe will be described. As shown in FIG. 5, when the end of the square pipe is fixed and the other end is held and turned, the middle is twisted. At this time, both ends are square as shown in FIG. 6, but the cross-sectional view of the twisted portion is twisted with the four sides of the square pipe recessed inward as shown in FIG.
This torsional angle pipe manufacturing technology has been successfully developed for the first time by the applicant, and now a torsional angle pipe manufacturing machine is installed to manufacture and sell torsional angle pipes.

  Therefore, as shown in FIG. 8, the gripping margins are left at both ends of the square pipe, and the holes 1 (9a), the holes 2 (10a), the holes 3 (11a), the holes 4 (12a), etc. Make a plurality of holes. When this square pipe is twisted, as shown in FIG. 9, a torsion part having a spiral hole is formed in the order of the upper side, the right side, the lower side, and the left side. Then, when both ends are cut, a twisted angle pipe (15) is formed as shown in FIG. The arrangement of the holes can be considered variously outside the spiral shape, and the holes may be formed after twisting the square pipe.

FIG. 10 shows a construction method based on claim 3 using this twisted angle pipe, in which a hole (2) is drilled in a vertical surface covered with mortar A (1) and a lid is placed in the hole. A thing with a twisted angle pipe (15) attached to A (14) is positioned. Next, as shown in FIG. 11, the hose (3) is put into the hole A (13), and the mortar B (4) is injected from the tip of the hole. At this time, since the mortar B also flows out from the hole of the twisted angle pipe, the outer mortar B in the twisted angle pipe is clogged while being joined through the hole formed in a spiral shape.
Therefore, as shown in FIG. 12, the lid (7) having the round steel (6) attached to the disc (5) is inserted into the hole A (13) and the lid is closed.

  The feature of the second embodiment is that since a twisted angle pipe is used, even if an attempt is made to pull out the twisted angle pipe, it is combined with the mortar so as not to come out. Therefore, it is a stronger anchor than Example 1.

  Unlike a conventional anchor, a square pipe or a torsional square pipe is inserted therein, so that the strength is so strong that it cannot be compared with the conventional one, and the applicability as an anchor is extremely large.

The square pipe of Example 1 of the present invention. The 1st step construction explanatory drawing of this invention Example 1. FIG. The 2nd step construction explanatory drawing of this invention Example 1. FIG. 3rd stage construction explanatory drawing of this invention Example 1. FIG. The front view which twisted the square pipe of Example 2 of this invention. FIG. 6 is a cross-sectional view taken along line AA in FIG. 5. BB sectional drawing of FIG. The square pipe of Example 2 of the present invention. The twisted angle pipe of Example 2 of the present invention. The 1st step construction explanatory drawing of Example 2 of this invention. The 2nd step construction explanatory drawing of this invention Example 2. FIG. Third stage construction explanatory diagram of the embodiment 2 of the present invention. The 1st step construction explanatory drawing of the conventional Example. The 2nd step construction explanatory drawing of the conventional Example.

1 Mortar A
2 holes 3 hose 4 mortar B
5 Disc 6 Round steel 7 Lid 8 Square pipe 9, 9a Hole 1
10, 10a hole 2
11, 11a hole 3
12, 12a hole 4
13 hole A
14 Lid A
15 Twisted square pipe

Claims (3)

Twisted square pipe Twisted square pipe A hole A is drilled in the center at the end of a twisted square pipe with multiple holes in a row at appropriate intervals on the top, bottom, right and left sides of the square pipe. features and to Rua anchor that was fitted with a lid a was.   Drill a hole in the surface covered with mortar A, etc., and drill a hole in the center of the square pipe with multiple holes in a row at appropriate intervals on each side of the square pipe. Put the object with the lid A with A open, position it, put the hose in the hole A, inject the mortar B sequentially from the tip of the hole, pull out the hose and attach the round steel to the disc Is inserted into the hole A, and the lid is covered. Drill a hole in the surface covered with mortar A, etc., twist the square pipe into the hole, and twist the square pipe. Position the object with the lid A with the hole A attached to the tip of the twisted square pipe with the hole in the hole, place the hose in the hole A, and inject the mortar B sequentially from the end of the hole, a lid fitted with a round steel disc and disconnect the hose, characterized in that the lid by inserting into the hole a, the construction method of the anchors.

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