JP2008274584A - Anchor device setting method and anchor device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anchor device setting method which allows correct driving of an anchor device, facilitates coping with a trouble of difficult driving of a blade device, and facilitates transportation thereof. <P>SOLUTION: According to the anchor device setting method, the blade device 1 consisting of a cylinder portion 10 and a blade portion 20 is driven into the natural ground 8 by a driving means, not shown in Fig. Thereafter, an anchor shaft 2 is inserted into the cylinder portion 10 of the blade device 1 which has already been driven, and driven into the natural ground 8. Further the blade device 1 is formed by combining an upper blade device and a lower blade device with each other. When the blade device is driven into the natural ground, first the lower blade device is driven, and then the upper blade device is driven, followed by combining the former and the latter with each other in the natural ground 8. Thereafter the anchor shaft 2 is driven into the natural ground 8 while penetrating an upper cylinder portion of the upper blade device and a lower cylinder portion of the lower blade device. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an anchor device construction method, and more particularly, to an anchor device construction method and anchor device having a wing.

Conventionally, the construction method of an anchor (anchor rod, anchor pipe, etc., collectively referred to as “anchor device” in the present invention) used to fix a rope (wire) structure of a rockfall countermeasure facility on a slope (slope),
(Ah) Generally, the method of driving directly on the ground (ground),
(Ii) Or, a method of forming a pre-installation hole in the ground in advance and inserting an anchor device into the excavation hole,
(Iii) A method of fixing the anchor device in the ground by inserting an anchor device into the excavation hole and pouring a coagulant having a setting effect such as mortar, cement, resin, etc. Although the timing of insertion of the coagulant and anchor is around, the underground part is positioned as a fixing layer, and the fixing layer is mainly formed by a relatively stable layer such as a rock layer or a stable soil layer).
And a rope is fixed to the anchor upper end exposed above the ground surface of the anchor device installed in this way via a clip made of metal fittings or the like.

In addition, in the conventional technology, at least two characteristics such as the case where the ground is a slope formed by a stable soil layer, or the soil surface is unstable and the ground is formed by a rock layer. In the case of a slope such as formed from different layers, it is considered that the anchor itself is fixed (fixing to prevent pulling out) relatively stable.
However, in the case of a slope with an unstable layer on the ground surface, it is not possible to expect a load bearing element against the load in a direction generally perpendicular to the anchor device. It is thought that it tilts in the direction of load application. That is, the clip and the rope attached to the upper end of the anchor exhibit the same behavior as that of the upper end of the anchor, and an extra load is generated in the structure as a rockfall countermeasure facility.
For this reason, for the purpose of preventing the anchor device from collapsing, an anchor rod or an anchor pipe (generally referred to as “anchor shaft” in the present invention) is placed, and then the anchor shaft passes through the anchor shaft, An invention in which a wing device having a sleeve (referred to as “cylinder portion” in the present invention) and a wing portion is installed is disclosed (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 2001-226916 (page 4-5, FIG. 9)

However, in the technique disclosed in Patent Document 1, the anchor shaft is driven first, and then the wing device is driven in a state where the cylindrical portion is guided to the anchor shaft that has already been driven. Therefore, there were the following problems.
(B) Since the anchor shaft is long and it is difficult to control the driving angle with respect to the natural ground, when the anchor shaft is not driven perpendicular to the surface of the natural ground, The part is inclined with respect to the surface of the natural ground, and a part of the wing part of the struck device is caused to “float” protruding from the surface of the natural ground, so that the tilt prevention effect is hindered and the purpose is not satisfied.
(B) In addition, after the anchor shaft is driven, if it becomes difficult to drive the wing device (for example, it collides with pebbles or gravel), the wing device is relatively recovered. Although it is easy, it is not easy to recover (draw out) the anchor shaft, so that a predetermined device and a considerable time are required for the recovery operation, which causes an increase in construction cost and an extension of the construction period.
(C) In addition, since the wing device composed of a cylindrical portion and a plurality of wing portions has a considerable weight and an apparent bulk, the amount that can be loaded during truck transportation is small, so the transportation cost increases. It is not easy to lift up to a position with a high slope (slope), which causes an increase in construction cost and extension of construction period.

  The present invention has been made to solve such a problem, and enables accurate placement, and can easily cope with the case where it is difficult to place the wing device. An object of the present invention is to provide an anchor device that can be easily transported, and a construction method thereof.

(1) A construction method of an anchor device according to the present invention comprises: a wing device comprising a tubular portion and a wing portion fixed to the outer periphery of the tubular portion; and a rod-like or tubular anchor shaft that can penetrate the tubular portion. An anchor device construction method comprising:
Placing the wing device on a natural ground;
Inserting the anchor shaft into the cylindrical portion of the wing device that has been driven and driving the anchor shaft into a natural ground.

(2) In the above (1), the wing portion is disposed in a plane including the axial center of the cylindrical portion,
The upper edge of the wing device is placed so as to be substantially flush with the surface of the natural ground.

(3) Moreover, the construction method of the anchor device according to the present invention includes a lower wing device composed of a lower tube portion and a lower wing portion fixed to the outer periphery of the lower tube portion,
An upper wing device comprising an upper cylinder portion and an upper wing portion fixed to the outer periphery of the upper cylinder portion;
An anchor device construction method comprising a rod-like or tubular anchor shaft that can pass through the lower cylinder part and the upper cylinder part,
A step of integrating the lower wing device and the upper wing device in a state where the axis of the lower cylinder portion and the axis of the upper cylinder portion coincide with each other;
Placing the integrated lower wing device and the upper wing device on a natural ground;
Inserting the anchor shaft into the upper cylinder part of the upper wing device and the lower cylinder part of the lower wing device that are integrally driven, and driving the ground shaft into a natural ground;
Have

(4) In the above (3), the length of the upper tube portion of the upper wing device is substantially half of the length of the upper wing portion in the vertical direction, and the upper tube portion is the upper wing portion. Fixed in the upper half of the range,
The length of the lower cylinder part of the lower wing device is approximately half of the length of the lower wing part in the vertical direction, and the lower cylinder part is fixed in a range of approximately the lower half of the lower wing part,
The upper edge of the lower wing device and the upper edge of the upper wing device are integrated so as to be substantially flush with each other.

(5) Further, in (3) or (4), an upper positioning means is provided on the outer periphery of the upper tube portion of the upper wing device so that the lower wing portion of the lower wing device can enter,
On the outer periphery of the lower tube portion of the lower wing device, a lower positioning means is provided that allows the upper wing portion of the upper wing device to enter,
The upper wing part is integrated with the lower positioning means, and the lower wing is integrated with the upper positioning means, respectively.

(6) Moreover, the construction method of the anchor device according to the present invention includes a lower wing device including a lower cylinder portion and a lower wing portion fixed to the outer periphery of the lower cylinder portion;
An upper wing device comprising an upper cylinder portion and an upper wing portion fixed to the outer periphery of the upper cylinder portion;
An anchor device construction method comprising a rod-like or tubular anchor shaft that can pass through the lower cylinder part and the upper cylinder part,
Placing the lower wing device on a natural ground;
Placing the upper wing device such that the axial center of the upper tubular portion coincides with the axial center of the lower tubular portion of the lower wing device,
Inserting the anchor shaft into the upper cylinder portion of the placed upper wing device and the lower cylinder portion of the placed lower wing device, and placing the anchor shaft on a natural ground;
An anchor device construction method having

(7) In the above (6), the length of the upper tube portion of the upper wing device is substantially half of the length of the upper wing portion in the vertical direction, and the upper tube portion is substantially above the upper wing portion. Fixed to half the range,
The length of the lower cylinder part of the lower wing device is approximately half of the length in the vertical direction of the lower wing part, and the lower cylinder part is fixed in a range of substantially lower half of the lower wing part,
The lower wing device is placed so that the upper edge is substantially flush with the surface of the natural ground, and the upper wing device is placed so that the upper edge is substantially flush with the surface of the natural ground. And

(8) In the above (6) or (7), an upper positioning means is provided on the outer periphery of the upper tube portion of the upper wing device so that the lower wing portion of the lower wing device can enter,
On the outer periphery of the lower tube portion of the lower wing device, a lower positioning means is provided that allows the upper wing portion of the upper wing device to enter,
The upper wing device is placed such that the upper wing portion enters the lower positioning means of the placed lower wing device.

(9) In any one of the above (3) to (8), in the upper wing device, the upper wing portion is disposed in a plane including the axis of the upper tube portion,
In the lower wing device, the lower wing portion is disposed in a plane including an axis of the lower cylinder portion.

(10) In any one of (3) to (9), the upper wing portion and the upper positioning means of the upper wing device are each a pair, and the upper wing portion is relative to the axis of the upper cylinder portion. Are arranged symmetrically with each other, and the upper positioning means is provided at a position perpendicular to the upper wing part,
The lower wing device includes a pair of lower wing portions and lower positioning means, the lower wing portions are arranged symmetrically with respect to the axis of the lower cylinder portion, and the lower positioning means is the lower wing portion. In a position perpendicular to the
In the state where the pair of lower wing portions of the placed lower wing device and the pair of upper wing portions of the placed upper wing device are positioned perpendicular to each other, the anchor shaft And a step of inserting into the upper cylinder portion of the upper wing device and the lower cylinder portion of the lower wing device that has been placed, and placing in a natural ground.

  (11) The method according to (1) or (2), further comprising a step of placing a top plate that can be locked to the wing device on an upper surface of the wing portion.

  (12) In any one of (3) to (10), the top plate that can be locked to the upper wing device and the lower wing device is placed on the upper surface of the upper wing portion and the upper surface of the lower wing portion. It has the process to perform.

(13) In any one of (3) to (10), a locking projection is provided on an upper edge of the upper wing of the upper wing device,
A locking projection is provided on the upper edge of the lower wing portion of the lower wing device,
A step of preparing a top plate that is arranged in four equal parts in the circumferential direction and in which a locking groove portion on which the locking projection portion can be freely locked is formed;
The locking projection provided on the lower wing portion of the placed lower wing device and the locking projection provided on the upper wing portion of the placed upper wing device are Placing the top plate so as to be engaged with the groove portion,
It is characterized by having.

(14) Further, the anchor device according to the present invention includes a lower wing device including a lower cylinder portion and a lower wing portion fixed to the outer periphery of the lower cylinder portion,
An upper wing device comprising an upper cylinder portion and an upper wing portion fixed to the outer periphery of the upper cylinder portion;
A rod-like or tubular anchor shaft that can pass through the lower cylinder part and the upper cylinder part.
(15) In the above (14), a top plate that can be locked to the upper wing device and the lower wing device is provided.

Since the construction method of the anchor device according to the present invention has the above configuration, the following effects can be obtained.
(I) In the anchor device construction method according to the present invention, first, the step of placing the wing device on the ground is executed, and subsequently, the anchor shaft is attached to the tube portion of the already-installed wing device. Since the anchor shaft is driven into the natural ground in the inserted state, (a) the anchor shaft is already driven even if the anchor shaft is not driven perpendicular to the surface of the natural ground. Since the squirting device is not overturned, the “floating” of the wing device does not occur and the object is satisfied. (B) Even if it is difficult to place the wing device and it has been abandoned, since the anchor shaft has not yet been placed, only the wing device is easily recovered (pulled out). It is easy and quick to deal with. (C) Further, even when a force that tilts the anchor shaft is applied, the wing portion functions as a resistor, so that the anchor device is prevented from falling.
The anchor rod, the anchor pipe, or the like can be simply referred to as “anchor”, but in order to prevent confusion between the “anchor device” composed of this and the wing device, It is called “anchor shaft”.

(Ii) Since the wing portion is arranged in a plane including the axis of the tube portion and the upper edge of the wing device is placed substantially flush with the surface of the natural ground, the force applied to the wing portion is the tube portion. The wing device is prevented from “floating”.
The upper edge of the wing device means that the upper edge of the wing part is perpendicular to the axis of the cylinder part, and the upper edge of the wing part is lowered so that the upper edge of the wing part moves away from the cylinder part. When tilting with respect to the axial center of the head part, tilt the connection position between the upper wing part and the cylindrical part with respect to the axial center of the cylindrical part so that the upper edge of the wing part rises away from the cylindrical part. In this case, the position farthest from the upper edge cylinder portion is meant.

  (Iii) Also, first the lower wing device is placed, then the upper wing device is placed, and finally the anchor shaft is already placed with the upper cylinder portion of the already placed upper wing device. Since the anchor shaft is driven in the inserted state with the lower cylinder portion of the lower wing device, the effects (a), (b) and (c) in (i) can be obtained, (D) Each of the lower wing device and the upper wing device is light without being bulky.

(Iv) Furthermore, since the upper edge of the lower wing device and the upper edge of the upper wing device are integrated so that they are substantially flush with each other, the upper edge of the lower wing device and the upper edge of the upper wing device are integrated. There is no difference in height between the two, and it is easy to fit in the natural ground when placed.
Note that the upper edge of the lower wing part and the upper edge of the upper wing part correspond to the upper edge of the wing device of (ii), respectively.
(V) Furthermore, since the upper wing part is integrated with the lower positioning means and the lower blade is integrated with the upper positioning means in an invading state, the arrangement of the upper wing part and the lower wing becomes accurate and arranged. Since the position does not change, the anchor device is reliably prevented from falling.

(Vi) Since the lower wing device and the upper wing device are driven separately, the driving is easy.
(Vii) Furthermore, since the upper edge of the lower wing device and the upper edge of the upper wing device are placed so that they are substantially flush with each other, the upper edge of the lower wing device and the upper edge of the upper wing device are There is no difference in height with the edge, and it fits in the natural ground.
The upper edge of the lower wing device and the upper edge of the upper wing device are the same as the upper edge of the wing device of (ii), respectively.

  (Viii) Since the upper wing device is driven so that the upper wing portion enters the lower positioning means of the already placed lower wing device, (f) the lower wing portion and the upper wing device of the lower wing device. The placement with the upper wing part becomes accurate.

(Ix) Since the upper wing portion is arranged in a plane including the axis of the upper cylinder portion and the lower wing portion is arranged in a plane including the axis of the lower cylinder portion, the upper wing portion and the lower wing portion The force applied to is reliably transmitted to the upper tube portion and the lower tube portion, and “floating” of the wing device is prevented.
(X) Furthermore, since the pair of lower wing portions of the lower wing device and the pair of upper wing portions of the upper wing device are placed so as to be arranged in a cross shape, the anchor device is prevented from falling (see above). (See (c)). In addition, since the pair of lower wing parts and the pair of upper wing parts form a flat surface, the apparent bulk of the lower wing apparatus and the upper wing apparatus is significantly reduced, and transportation is further facilitated (see above). (See (d)).

(Xi) Moreover, since the top plate is placed on the upper surface of the wing portion, the wing portion is accurately arranged.
(Xii) Similarly, since the top plate is placed on the upper surface of the upper wing portion and the upper surface of the lower wing portion, the arrangement of the two becomes accurate.

  (Xiii) Since the lower wing portion of the lower wing device and the upper wing portion of the upper wing device are positioned by the top plate locked to the upper wing device, the arranged position does not change, and the anchor device falls down. This is surely prevented (see (c) above).

(Xiv) Moreover, since the anchor apparatus which concerns on this invention has a lower wing apparatus, an upper wing apparatus, and an anchor shaft, conveyance becomes easy.
(Xv) Further, since the lower wing device and the upper wing device have a top plate that can be locked, the arrangement of the two becomes accurate.

[Embodiment 1: Integrated type]
FIG. 1 is a schematic view for explaining the anchor device construction method according to Embodiment 1 of the present invention step by step.
In FIG. 1A, it is possible to place an anchor shaft 2, which will be described later, in which a trial digging 7 is performed in advance on a wing device 1 including a cylinder portion 10 and a wing portion 20 fixed to the outer periphery of the cylinder portion 10. It is positioned at the construction point of the surface 9 (hereinafter referred to as “the ground surface”) 9 of the natural ground 8 confirmed to be.
In addition, in the figure, the wing | blade part 20 is trapezoid shape, Comprising: Although only one pair is shown in figure on the right and left, this invention does not limit the shape and quantity. For example, four wings may be provided in a cross shape.

In FIG. 1B, the wing device 1 is driven on the ground 8 by a driving means (not shown). At this time, the upper edge of the wing portion 20 (same as the line connecting the position c and the position d) is perpendicular to the cylindrical portion 10 and is placed until it is substantially flush with the ground surface 9.
In addition, since the lower edge of the wing part 20 (same as the line connecting the position A and the position B) is inclined so as to protrude downward as it approaches the cylinder part 10, it is easy to place. In addition, since the vertical length of the wing part 20 (same as the distance between the position A and the position D) is relatively short, the wing part 20 is not tilted during placement, but the wing part 20 is made of stone or gravel. Even in the case where it is necessary to stop driving due to a collision, the wing device 1 can be easily recovered (pulled out).
In addition, the placing means is not limited, and an adapter (a placement surface is formed) may be placed on the wing device 1 and the wing device 1 may be placed therethrough.

In FIG. 1C, the anchor shaft 2 is inserted into the cylinder portion 10 of the wing device 1 that has already been driven and driven into the ground 8. That is, the anchor device 100 is formed by the anchor shaft 2 and the wing device 1.
At this time, since it has been confirmed that the anchoring point of the anchor shaft 2 can be driven by the test excavation 7, the anchor shaft 2 can be driven to a predetermined depth. Further, even if the driving direction of the anchor shaft c2 is deviated (tilted), the wing device 1 has already been driven, so that the posture of the wing device 1 does not change (tilt). That is, “floating” in which a part of the wing portion 20 protrudes from the ground surface 9 does not occur.

The length and shape of the anchor shaft 2 are not limited, and may be any of a tube, a rod, or an outer peripheral rib formed thereon. Further, the placing means is not limited. Further, even if the adapter shaft (having a placement surface) is placed on the anchor shaft 2 and the anchor shaft 2 is placed therethrough. Good.
In FIG. 1, the upper edge of the wing device 1 is the same as the upper edge of the wing portion 20 (the same as the line connecting position c and position d in FIG. 1B), and the upper edge is Although the cylinder portion 10 is perpendicular to the axis, the present invention is not limited to this, and the upper edge may be inclined.
For example, in the case where the upper edge of the wing part 20 is inclined with respect to the axis of the cylinder part so as to move away from the cylinder part 10 (having a C shape), the connection position between the wing part 20 and the cylinder part 10 When (position 2) is the upper edge of the wing device 1 and, conversely, the upper edge of the wing part 20 is inclined with respect to the axis of the cylinder part so as to move away from the cylinder part 10 (presents a V shape). In this case, the position (position c) farthest from the cylinder portion 10 is defined as the upper edge of the wing device 1.

[Embodiment 2: Assembly type]
2A and 2B illustrate a wing device used in the anchor device construction method according to Embodiment 2 of the present invention, FIG. 2A is a perspective view schematically showing a lower wing device constituting the wing device, and FIG. The perspective view which shows typically the upper wing apparatus which comprises a wing | blade apparatus, (c) is a perspective view which shows a wing apparatus typically.
In addition, the same code | symbol is attached | subjected to the part which is the same as that of Embodiment 1 (FIG. 1), or an equivalent part, and one part description is abbreviate | omitted.

(Lower feather device)
In FIG. 2A, the lower wing device 1a includes a lower cylinder portion 10a and a pair of lower wing portions 20a fixed to the outer periphery of the lower cylinder portion 10a.
The lower cylinder portion 10a is a cylinder having an inner diameter through which the anchor shaft 2 can pass, and a pair of lower positioning projections 11a at a symmetrical position with the shaft centered near the lower end of the outer periphery, A pair of lower positioning grooves 12a are provided at symmetrical positions across the center. The pair of lower positioning projections 11a and the pair of lower positioning grooves 12a are both arranged in the same phase in the circumferential direction. For convenience of explanation, they are arranged at the 3 o'clock and 9 o'clock positions. Call it.

Each of the pair of lower wing portions 20a is a substantially trapezoidal plate member, and the length in the vertical direction is approximately twice the length of the lower tube portion 10a. And since the lower end (same as position i) coincides with the lower end of the upper cylinder part 10b, the lower wing part 20a is the same as the line connecting the position n and position i in the substantially half range near the lower edge in the vertical direction. ) At the 12:00 and 6 o'clock positions of the lower tube portion 10a.
That is, the pair of lower positioning protrusions 11a (same as the pair of lower positioning grooves 12a) and the pair of lower wings 20a are alternately arranged in an orthogonal plane (equally arranged in the circumferential direction). Have been).

Further, a lower positioning projection 21a (same as the line connecting the position and the position) is provided above the fixed range and protrudes toward the lower cylinder portion 10a. That is, the lower positioning projection 21a has a step (a line connecting the position H and the position R) with respect to the side edge (the same as the line connecting the position G and the position H and the line connecting the position L and the position A). , And the line connecting position n and position le).
Furthermore, a lower locking projection 22a (same as the range surrounded by position c, position d, position e, and position f) is provided so as to protrude to the upper edge, and the lower locking projection 22a A lower locking through hole 23a is formed.

(Upper feather device)
In FIG. 2B, the upper wing device 1b includes an upper tube portion 10b and a pair of upper wing portions 20b fixed to the outer periphery of the upper tube portion 10b.
The upper cylinder portion 10b is a cylinder having an inner diameter through which the anchor shaft 2 can pass, and a pair of upper positioning projections 11b in a symmetrical position with the axis centered near the upper end of the outer periphery and a shaft near the lower stage of the outer periphery. A pair of upper positioning grooves 12b are provided at symmetrical positions across the center. The pair of upper positioning projections 11b and the pair of upper positioning grooves 12b are both arranged in the same phase in the circumferential direction, and for convenience of explanation, they are arranged at the 12 o'clock and 6 o'clock positions. Call it.

Each of the pair of upper wing portions 20b is a substantially trapezoidal plate material, and the length in the vertical direction is approximately twice the length of the upper tube portion 10b. Since the upper edge (same as the line connecting the position f and position g) forms the same surface as the upper end of the upper tube portion 10b, the upper wing portion 20b is in a substantially half range near the upper edge in the vertical direction. (It is the same as the line connecting position G and position H) and is fixed at the 3 o'clock and 9 o'clock positions of the upper tube portion 10b.
That is, the pair of upper positioning protrusions 11b (same as the pair of upper positioning grooves 12b) and the pair of upper wing portions 20b are alternately arranged in an orthogonal plane (equally arranged in the circumferential direction). Have been).

Further, below the fixed range, an upper positioning projection 21b (same as a line connecting the position and the position) protruding to the upper tube portion 10b side is provided. That is, the upper positioning projection 21b has a step (a line connecting the position H and the position R) with respect to the side edge (the same as the line connecting the position G and the position H and the line connecting the position L and the position A). , And the line connecting position n and position le).
Further, an upper locking projection 22b (same as the range surrounded by the position c, position d, position e, and position f) is provided so as to protrude to the upper edge, and the upper locking projection 22b An upper locking through hole 23b is formed.

(Assembly feather device)
In FIG. 2 (c), the lower wing device 1a and the upper wing device 1b are assembled and integrated. For convenience of explanation, the integrated unit is referred to as an assembly blade device 4.
That is, both are overlapped in a state where the axis of the lower cylinder portion 10a coincides with the axis of the upper cylinder portion 10b. At this time, the lower wing portion 20a of the lower wing device 1a is held by the upper positioning protrusion 11b of the upper wing device 1b, and the lower positioning protrusion 21a of the lower wing device 1a is formed in the upper positioning groove 12b of the upper wing device 1b. Invaded. Similarly, the upper wing portion 20b of the upper wing device 1b is held by the lower positioning projection 11a of the lower wing device 1a, and the upper positioning projection 21b of the upper wing device 1b is inserted into the lower positioning groove 12a of the lower wing device 1a. Invaded.
Therefore, a total of four lower wing portions 20a and upper wing portions 20b are arranged in a plane orthogonal to each other while being firmly positioned (equally arranged in the circumferential direction).
In the present invention, “holding” does not mean that the upper positioning protrusions 11b are in contact with both surfaces of the lower wing portion 20a. This means that the relative position with respect to the positioning projection 11b includes a value that varies by a predetermined distance (the same applies to the third embodiment).

(Construction method)
The anchor device construction method according to the second embodiment, the lower wing device 1a and the upper wing device 1b are assembled, and the assembled wing device 4 in which the two are integrated in advance is completed, and then the assembled wing device 4 is hit on the ground 8 It is to be established. That is, the procedure for placing is the same as that of the first embodiment (FIG. 1) in which the wing device 1 is replaced with the assembly wing device 4, and the description thereof is omitted. That is, an anchor device (not shown) is formed by the anchor shaft 2 and the assembly blade device 4.

Therefore, the construction method of the anchor device according to the second embodiment has the same effect as the first embodiment (the posture of the assembly blade device 4 does not fluctuate (tilt), and it is easy to cope with the placement failure). Since it can play and it can assemble in an installation point, conveyance becomes easy.
In particular, the lower wing device 1a has a pair of lower wing portions 20a that form a flat surface, and similarly, the upper wing portion 20b of the upper wing device 1b also forms a flat surface. Conveyance efficiency is improved. Moreover, when lifting to a high slope position, the lower wing device 1a and the upper wing device 1b, which are approximately half the weight of the integrated assembly wing device 4, only have to be lifted. The apparatus can be reduced in size, and the burden on the operator can be reduced.

In FIG. 2, the upper edge of the upper wing device 1b and the upper edge of the lower wing device 1a are the same as the line connecting the position to the position in FIG. Although the part 10b and the cylinder part 10a are perpendicular to the axis, the present invention is not limited to this, and the upper edge may be inclined.
For example, when the upper wing portion 20b is inclined with respect to the axial center of the upper tube portion 10b so as to be lowered as the upper edge of the upper wing portion 20b is separated from the upper tube portion 10b (presents a C shape), the upper wing portion 20b and the upper tube The connection position (position G) with the portion 10b is the upper edge of the upper wing device 1b, and, conversely, with respect to the axis of the upper tube portion 10b so that the upper edge of the upper wing portion 20b moves away from the upper tube portion 10b. When it is inclined (presents a V shape), the position farthest from the upper tube portion 10b (excluding the upper locking projection 22b) is set as the upper edge of the upper wing device 1b.

[Embodiment 3: Division type]
FIGS. 3 to 6 illustrate the construction method of the anchor device according to the third embodiment of the present invention. FIGS. 3 and 4 are schematic diagrams illustrating the steps, and FIG. FIG. 6 is a plan view showing a top plate constituting the anchor device. Note that the same or corresponding portions as those in the first embodiment (FIG. 1) and the second embodiment (FIG. 2) are denoted by the same reference numerals, and a part of the description is omitted.

  In FIG. 3 (a), it is confirmed that the lower wing device 1a having the lower cylinder portion 10a and the lower wing portion 20a is preliminarily subjected to the test excavation 7 and can be anchored. Position at the construction point of the ground surface 9 on the surface of the mountain 8.

In FIG. 3 (b), the lower wing device 1a is driven on the ground 8 by a driving means (not shown). At this time, it is driven until the upper edge of the lower wing portion 20a is substantially flush with the ground surface 9.
The placing means is not limited, and an adapter (having a placement surface) is placed on the lower wing device 1a, and the lower wing device 1a is placed through the adapter. Good.

In FIG. 3 (c), the axis of the upper cylinder part 10b of the upper wing device 1b to be placed is aligned with the axis of the lower cylinder part 10a of the lower wing apparatus 1a already placed. The upper wing portion 20b (fixed at the 3 o'clock and 9 o'clock positions) of the tubular portion 10b and the lower wing portion 20a (at 12 o'clock and 6 o'clock) of the lower tubular portion 10a of the lower wing device 1a that has already been placed. The upper wing device 1b is placed on the natural ground 8 so as to be perpendicular to each other.
Then, the upper wing portion 20b of the lower wing device 1b that descends is held by the lower positioning protrusion 11a of the already placed lower wing device 1a, and the upper positioning protrusion 21b is used for lower positioning of the lower wing device 1a. It penetrates into the groove 12a. At the same time, the lower wing portion 20a of the lower wing device 1a that has already been driven is held by the upper positioning protrusion 11b of the lower wing device 1b that descends, and the lower positioning protrusion 21a enters the upper positioning groove 12b. . Eventually, the lower end of the upper tube portion 10b of the upper wing device 1b comes into contact with the upper end of the lower tube portion 10a of the lower wing device 1a.

That is, in the third embodiment, the lower wing device 1 a and the upper wing device 1 b are separately placed on the ground 8 to complete the assembly blade device 4 in the ground 8.
Therefore, since both the lower wing device 1a and the upper wing device 1b only have a pair of lower wing portion 20a and upper wing portion 20b, the assembly wing device 4 having a total of four wing portions can be placed. In comparison, the frictional resistance received from the natural ground 8 is substantially halved. Therefore, the capacity (load) for placing the lower wing device 1a and the upper wing device 1b separately is substantially halved. That is, the apparatus for placing is reduced in size, and in particular, installation and transportation (vertical direction and horizontal direction) on a slope with a steep slope become easy, so that the construction is quick.
Further, even when the lower wing device 1a or the upper wing device 1b cannot be placed, it is sufficient to collect (pull out) only one or both of which cannot be placed, and both of them. Since only a pair of wings is provided, the frictional resistance of the natural ground 8 is small and recovery (pulling) is easy.

In FIG. 4A, the anchor shaft 2 is inserted into the upper cylinder portion 10b of the upper wing device 1b that has already been driven and the lower cylinder portion 10a of the lower wing device 1a that has been driven. Place in 8.
Therefore, as in the second embodiment, the posture of the assembly blade device 4 assembled in the ground does not change (tilt).

In FIG. 4B, the top plate 3 is placed on the assembly blade device 4 with the anchor shaft 2 penetrating. That is, the anchor device 300 is formed by the lower wing device 1 a, the upper wing device 1 b, the anchor shaft 2, and the top plate 3.
6A, the top plate 3 is a disk 30 having a through-hole 32 formed at the center, and is provided with four locking groove portions 31 that reach the outer periphery of the disk 30. In FIG. The through hole 32 has an inner diameter through which the anchor shaft 2 can pass. The locking groove 31 is disposed on the radiation orthogonal to each other, and has a width and a length that allow the lower locking projection 22a and the upper locking projection 22b to enter.

In FIG. 5A, the anchor shaft 2 passes through the center of the assembly blade device 4 in which the lower blade device 1a and the upper blade device 1b are integrated, and the top plate 3 is placed thereon. At this time, the lower locking projection 22 a and the upper locking projection 22 b are locked to the locking groove 31 and protrude above the disk 30. Therefore, the lower wing portion 20a of the lower wing device 1a and the upper wing portion 20b of the upper wing device 1b are positioned more firmly.
A bolt or a pin (not shown) is inserted into the lower locking through hole 23a and the upper locking through hole 23b formed in the lower locking protrusion 22a and the upper locking protrusion 22b, respectively. The top plate 3 may not be detached. At this time, when the ground surface 9 is going to rise, the top plate 3 contributes to prevention of the rise.

In FIG. 6B, the top plate 3x is a rectangular plate 30x having a through hole 32x formed at the center, and four locking grooves 31x that reach the corners of the rectangular plate 30x are provided. . The through hole 32x has an inner diameter through which the anchor shaft 2 can pass. The locking groove 31x is disposed on radiation that is orthogonal to each other, and has a width and a length that allow the lower locking projection 22a and the upper locking projection 22b to enter.
In FIG. 6 (c), the top plate 3y is a cross-shaped plate 30y having a through hole 32y formed at the center, and there are four locking grooves 31y that reach the tip of the cross-shaped plate 30y. Yes. The through hole 32y has an inner diameter through which the anchor shaft 2 can pass. The locking groove 31y is disposed on radiation that is orthogonal to each other, and has a width and a length that allow the lower locking projection 22a and the upper locking projection 22b to enter.

In the present invention, the form of the top plate is not limited to that shown in the figure, and any form may be used as long as it has the locking function.
In addition, the above describes the case where the lower wing portion 20a and the upper wing portion 20b have a cross shape. However, the present invention is not limited to this, and the lower wing portion 20a or the upper wing portion 20b When the arrangement form (the number of sheets and the arrangement angle) is changed, the shape of the top plate and the number of the locking grooves are changed according to the changed form.

  Since the present invention has the above-described configuration, it can be prevented from falling down in the lateral direction, can be accurately placed, and can be easily handled when placement is impossible. It can be widely used as a construction method for various anchor devices.

The schematic diagram explaining the construction method of the anchor apparatus which concerns on Embodiment 1 of this invention. The perspective view etc. which explain the wing | blade apparatus used for the construction method of the anchor apparatus which concerns on Embodiment 2 of this invention. The schematic diagram explaining the construction method of the anchor apparatus which concerns on Embodiment 3 of this invention. The schematic diagram explaining the construction method of the anchor apparatus which concerns on Embodiment 3 of this invention. The perspective view which shows typically the mode at the time of completion | finish of construction shown in FIG. The top view which shows the top plate which comprises the anchor apparatus shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wing device 1a Lower wing device 1b Upper wing device 2 Anchor shaft 3 Top plate 3x Top plate 3y Top plate 4 Assembly wing device 7 Exploration 8 Ground mountain 9 Ground surface 10 Tube portion 10a Lower tube portion 10b Upper tube portion 11a For lower positioning Protrusion 11b Upper positioning protrusion 12a Lower positioning groove groove 12b Upper positioning groove groove 20 Wings 20a Lower wings 20b Upper wings 21a Lower positioning protrusions 21b Upper positioning protrusions 22a Lower locking protrusions 22b Upper locking projection 23a Lower locking through hole 23b Upper locking through hole 30 Disc 30x Rectangular plate 30y Cross plate 31 Locking groove 31x Locking groove 31y Locking groove 32 Through hole 32x Through Hole 32y Through-hole 100 Anchor device (Embodiment 1)
300 Anchor device (Embodiment 3)

Claims (15)

A construction method of an anchor device comprising a wing device composed of a tubular portion and a wing portion fixed to the outer periphery of the tubular portion, and a rod-like or tubular anchor shaft that can penetrate the tubular portion,
Placing the wing device on a natural ground;
Inserting the anchor shaft into the cylindrical portion of the installed wing device and driving it into a natural ground;
An anchor device construction method having The wing portion is disposed in a plane including the axis of the cylindrical portion;
2. The anchor device construction method according to claim 1, wherein an upper edge of the wing device is placed so as to be substantially flush with a surface of a natural ground. A lower wing device comprising a lower cylinder part and a lower wing part fixed to the outer periphery of the lower cylinder part;
An upper wing device comprising an upper cylinder portion and an upper wing portion fixed to the outer periphery of the upper cylinder portion;
An anchor device construction method comprising a rod-like or tubular anchor shaft that can pass through the lower cylinder part and the upper cylinder part,
A step of integrating the lower wing device and the upper wing device in a state where the axis of the lower cylinder portion and the axis of the upper cylinder portion coincide with each other;
Placing the integrated lower wing device and the upper wing device on a natural ground;
Inserting the anchor shaft into the upper cylinder part of the upper wing device and the lower cylinder part of the lower wing device that are integrally driven, and driving the ground shaft into a natural ground;
An anchor device construction method having The length of the upper tube portion of the upper wing device is approximately half of the length of the upper wing portion in the vertical direction, and the upper tube portion is fixed in a range of approximately the upper half of the upper wing portion,
The length of the lower cylinder part of the lower wing device is approximately half of the length of the lower wing part in the vertical direction, and the lower cylinder part is fixed in a range of approximately the lower half of the lower wing part,
4. The anchor device construction method according to claim 3, wherein the upper edge of the lower wing device and the upper edge of the upper wing device are integrated so as to be substantially flush with each other. On the outer periphery of the upper cylinder portion of the upper wing device, an upper positioning means is provided so that the lower wing portion of the lower wing device can enter,
On the outer periphery of the lower tube portion of the lower wing device, a lower positioning means is provided that allows the upper wing portion of the upper wing device to enter,
5. The anchor device construction method according to claim 3, wherein the upper wing portion is integrated with the lower positioning means and the lower blade is integrated with the upper positioning means in a state of entering. A lower wing device comprising a lower cylinder part and a lower wing part fixed to the outer periphery of the lower cylinder part;
An upper wing device comprising an upper cylinder portion and an upper wing portion fixed to the outer periphery of the upper cylinder portion;
An anchor device construction method comprising a rod-like or tubular anchor shaft that can pass through the lower cylinder part and the upper cylinder part,
Placing the lower wing device on a natural ground;
Placing the upper wing device such that the axial center of the upper tubular portion coincides with the axial center of the lower tubular portion of the lower wing device,
Inserting the anchor shaft into the upper cylinder portion of the placed upper wing device and the lower cylinder portion of the placed lower wing device, and placing the anchor shaft on a natural ground;
An anchor device construction method having The length of the upper tube portion of the upper wing device is approximately half of the length of the upper wing portion in the vertical direction, and the upper tube portion is fixed in a range of approximately the upper half of the upper wing portion,
The length of the lower cylinder part of the lower wing device is approximately half of the length in the vertical direction of the lower wing part, and the lower cylinder part is fixed in a range of substantially lower half of the lower wing part,
The lower wing device is placed so that the upper edge is substantially flush with the surface of the natural ground, and the upper wing device is placed so that the upper edge is substantially flush with the surface of the natural ground. The construction method of the anchor apparatus of Claim 6. On the outer periphery of the upper cylinder portion of the upper wing device, an upper positioning means is provided so that the lower wing portion of the lower wing device can enter,
On the outer periphery of the lower tube portion of the lower wing device, a lower positioning means is provided that allows the upper wing portion of the upper wing device to enter,
The anchor device construction method according to claim 6 or 7, wherein the upper wing device is placed so that the upper wing portion enters the lower positioning means of the placed lower wing device. . In the upper wing device, the upper wing portion is disposed in a plane including the axis of the upper tube portion,
The anchor device construction method according to any one of claims 3 to 8, wherein, in the lower wing device, the lower wing portion is disposed in a plane including an axis of the lower cylinder portion. The upper wing part and the upper positioning means are a pair, and the upper wing part is arranged symmetrically with respect to the axis of the upper cylinder part, and the upper positioning means is the upper wing part. In a position perpendicular to the
The lower wing device includes a pair of lower wing portions and lower positioning means, the lower wing portions are arranged symmetrically with respect to the axis of the lower cylinder portion, and the lower positioning means is the lower wing portion. In a position perpendicular to the
In the state where the pair of lower wing portions of the placed lower wing device and the pair of upper wing portions of the placed upper wing device are positioned perpendicular to each other, the anchor shaft Inserting into the upper cylinder portion of the upper wing device being placed and the lower cylinder portion of the lower wing device being placed, and placing in the natural ground;
The anchor device construction method according to claim 3, wherein the anchor device has a structure.   3. The anchor device construction method according to claim 1, further comprising a step of placing a top plate that can be locked to the wing device on an upper surface of the wing portion.   11. The method according to claim 3, further comprising: placing a top plate that can be locked to the upper wing device and the lower wing device on an upper surface of the upper wing portion and an upper surface of the lower wing portion. The construction method of the anchor apparatus as described in a crab. A locking projection is provided on the upper edge of the upper wing portion of the upper wing device,
A locking projection is provided on the upper edge of the lower wing portion of the lower wing device,
A step of preparing a top plate that is arranged in four equal parts in the circumferential direction and in which a locking groove portion on which the locking projection portion can be freely locked is formed;
The locking projection provided on the lower wing portion of the placed lower wing device and the locking projection provided on the upper wing portion of the placed upper wing device include the locking projection. Placing the top plate so as to be engaged with the groove portion,
The anchor device construction method according to claim 3, wherein the anchor device construction method comprises: A lower wing device comprising a lower cylinder part and a lower wing part fixed to the outer periphery of the lower cylinder part;
An upper wing device comprising an upper cylinder portion and an upper wing portion fixed to the outer periphery of the upper cylinder portion;
An anchor device having a rod-like or tubular anchor shaft that can pass through the lower cylinder part and the upper cylinder part.   15. The anchor device according to claim 14, further comprising a top plate that can be locked to the upper wing device and the lower wing device.

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