JP2014068615A - Supporting structure for planted tree and supporting method for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a planted tree supporting structure capable of further firmly supporting the root clump of a planted tree; and to provide a supporting method for the planted tree.SOLUTION: A plurality of vertical strut members 3 are driven into a ground surface on which a root clump 1 of a tree T is mounted, along the peripheral surface of the root clump 1 within a recess 2 which is formed on the ground surface; the upper parts of the vertical strut members 3 are tightened with a tightening member 10 along the side face of the root clump 1; and the side face of the root clump is sandwiched and pressurized by the vertical strut members 3. In a supporting structure for a planted tree which is firmly fixed in this way, catch members 20 are attached to positions which are lower than the fitting position of the tightening member 10 of the vertical strut members 3 and which are corresponding to the side face of the root clump 1, and the catch members 20 comprise holding parts which are firmly fixed to or restrained by the vertical strut members 3, and projection pieces which are integrally formed in the holding parts and projected into the side face of the root clump 1 at the time of tightening the vertical strut members 3 with the tightening members 10.

Description

  The present invention relates to a support structure that supports trees artificially planted in, for example, a park, a pavement, and other places, and a support method thereof.

The present inventor has already proposed Japanese Patent No. 38607779 (Japanese Patent Laid-Open No. 2004-73075) as a supporting structure for planted trees.
That is, the support structure includes a recess formed in the ground on which a tree root pot is placed, a wooden support pile driven in a plurality along the peripheral surface of the root pot in the recess, and the support pile sharpens the tip. A log pile, a root member formed by cutting a portion projecting upward from a fastening member of the support pile, and attached to all or a part of the support pile, and in the recess A root anchor for attaching the root anchor member sideways, and a tightening member provided at a position above the root anchor of the support pile, and tightening the plurality of support piles along the root pot, The root pot is fastened with a tightening member, and the root ridge member is attached to a root ridge fixture, the recess is filled, and the root basin and the root ridge are embedded in the ground.
As a result, even in rainstorms and the like, considerable achievements have been made that the root pots of planted trees are firmly supported.
In this type of support structure, a plurality of support piles that are driven at substantially equal intervals along the peripheral surface of the root pot are pressed and tightened so as to be substantially vertical toward the root pot by a tightening member. Only touched the root pot.
The above problem is not limited to support piles, but is a common problem with vertical strut members that are installed vertically along the side face of root pots such as logs and pipes used in cross-girder type pillars and press the side face of root pots. there were.
Therefore, as a result of earnest research, the inventor further increases the pull-out strength of the vertical strut member by causing the tip of the catch member attached to the vertical strut member such as a support pile to enter the middle position of the root pot. The present invention has been completed by developing a support structure for planted trees that can reliably support even strong winds exceeding expectations.

Japanese Patent No. 3860779

  An object of the present invention is to cause a piece fixed to a vertical strut member to bite into the side surface of the root pot when the vertical strut member is supported substantially by pressing the vertical strut member along the side surface of the root pot. And providing a planted tree support structure and method that can further enhance the pull-out strength of the vertical strut members tightened so as to surround the root pot by the tightening member and the support strength of the root pot. There is.

In order to solve the above-mentioned problem, in the invention of the support structure of the planted tree of claim 1,
The upper part of the vertical strut member to be driven along the peripheral surface of the root pot in the recess formed on the ground on which the root pot of the tree is placed is tightened along the side surface of the root pot with the tightening member, and the root with the vertical strut member. In the support structure of the planted tree that is fixed so as to sandwich the side of the pot,
A catch member is attached to a position below the attachment position of the fastening member of the vertical strut member and corresponding to the side surface of the root pot,
A holding part that is fixed or restrained to the vertical strut member, and a projecting piece that is formed integrally with the holding part and enters the side surface of the root pot when the vertical strut member is tightened by the tightening member; It is characterized by comprising.
In the invention of claim 2,
The protruding piece is attached to the vertical support member at a position where it can enter a midway position in the height direction of the side surface of the root pot when the tightening member is tightened.
In the invention of claim 3,
The holding part of the catch member is made of an annular body that is fitted around the vertical support member,
The protruding piece of the catch member is a piece that protrudes laterally from the annular body and can bite into the side surface of the root pot.
In the invention of claim 4,
The vertical strut member is made of a log pile,
The annular member of the catch member is provided with a hole for temporarily fixing or fixing the annular member to the vertical column member with a fixture such as a nail at a predetermined position of the vertical column member.
In the invention of the method for supporting planted trees of claim 5,
The upper part of the vertical strut member to be driven along the peripheral surface of the root pot in the recess formed on the ground on which the root pot of the tree is placed is tightened along the side surface of the root pot with the tightening member, and the root with the vertical strut member. In the method of supporting planted trees that are fixed so as to sandwich the side of the pot,
At a midway position in the height direction of the vertical strut member, a catch member consisting of a holding portion fixed or restrained to the vertical strut member and a projecting piece protruding from one side of the holding portion to one side is mounted.
A fastening member is mounted above the catch member with the vertical strut member,
When the vertical strut member is tightened with the tightening member, the protruding piece of the catch member is bitten into the side surface of the root pot and tightened, and the root pot is embedded in the ground by filling the concave portion. .

The catch member of the present invention, when tightening while pressing the vertical strut member along the side surface of the root pot, causes the protrusion of the catch member protruding from the vertical strut member to bite into the side surface of the root pot so that the protruding piece is rooted. It can penetrate into the root extending in the lateral direction in the root pot without cutting, and the root can be entangled with the protruding piece as the root grows, thereby supporting the root pot more firmly.
As a result, at the midway position in the height direction of the side surface of the root pot, the root in the root pot extends substantially horizontally rather than downward, and the root is not cut even if the projecting piece is bitten. A piece can be bitten between the roots.

The support structure of the planted tree of Example 1 is shown, (a) is sectional drawing of the state which driven the vertical | vertical support | pillar member, (b) is sectional drawing of the state which mounted | wore with the root member. It is a top view which shows the fastening structure of the vertical support | pillar member using a fastening member. It is a figure which shows the catch member of Example 1, (a) is a top view, (b) is a side view. FIG. 6A is a plan view of the catch member of Example 2, and FIG. It is a top view of the protruding piece of the catch member of Example 3 which has a protruding piece of a different shape, (a) is a catching member which has a protruding piece which has a substantially trapezoidal shape, (b) is a protruding piece whose tip is corrugated, (C) is a projecting piece having a bifurcated tip. FIG. 9A is a plan view of a catch member according to a fourth embodiment, and FIG. It is a side view of the catch member of Example 5 formed integrally with the fastening member. It is a top view of the catch member of Example 6 which provided the protrusion in the holding | maintenance part. It is a side view of the catch member of Example 7 which integrally provided the nail for driving into a vertical support | pillar member in a holding | maintenance part. The Example from which a support structure differs is shown, (a) is a side view, (b) is a top view.

  Hereinafter, an example in which the present invention is applied to a planted tree support structure of Japanese Patent No. 3860779 will be described with reference to the drawings.

  The support structure of the planted tree T of Example 1 shown in FIG. 1 includes a recess 2 formed of a planting hole formed in the ground for placing the root pot 1 of the tree T, and a root pot 1 in the recess 2. A plurality of (four in the illustrated example) logs made of vertical strut members 3, catch members 20 attached to the respective vertical strut members 3, and attached to the respective vertical strut members 3, A root anchor 5 for attaching the root anchor member 4 serving as an anchor in the concave portion 2 in a horizontal direction, and the vertical strut member 3 is provided at a position above the root anchor 5 so that the vertical strut members 3 are mutually rooted. The fastening member 10 is fastened along the bowl 1.

In the illustrated example, the vertical strut member 3 is a log whose tip is shaved, but in the present invention, the vertical strut member 3 is vertically installed along the side surface of a cut log, a single pipe, or other root pot used for the cross-girder-shaped strut. The material and the support structure are not particularly limited as long as they press the side surface of the root pot.
The vertical strut members 3 are driven at substantially equal intervals along the peripheral surface of the root pot 1 in the recess 2.
At the time of driving, it is preferable that the vertical column member 3 is driven slightly obliquely so that the vertical column member 3 becomes vertical after tightening.

The vertical strut member 3 may have a configuration in which the root anchor fitting 5 is mounted in advance at a midway position. However, in this embodiment, the root anchor fixture 5 is separated from the vertical strut member 3. After the vertical strut member 3 is driven into the recess 2, it is inserted into the vertical strut member 3 and dropped, and is mounted along the bottom surface of the recess 2.

Next, the vertical strut member 3 is located above the mounting position of the root rod member 4, at an intermediate position below a mounting position of a fastening member 10 described later, and at a location corresponding to the side surface of the root pot 1. A catch member 20 shown in FIG.
The catch member 20 is made of metal in this embodiment, but may be made of synthetic resin as long as it has a certain strength.
The catch member 20 includes a holding portion 21 fixed or restrained to the vertical column member 3 and a protruding piece 22 formed integrally with the holding portion 21 and capable of entering the side surface of the root pot 1 when tightened. It has become.

In the present embodiment, the holding portion 21 is formed of a cylindrical body that is externally fitted to the vertical column member 3, and a fixing component 24 for temporarily fixing the catch member 20 by driving a nail into the vertical column member 3 on the side surface. As a nail hole is formed.
If the vertical support member 3 has a shape other than a circular shape (for example, an ellipse, a quadrangle, a polygon, etc.), and the holding portion 21 has a cross-sectional shape that follows the cross-sectional shape of the vertical support member 3, the fixing structure There is no need to provide a section.

The protruding piece 22 is a piece protruding in the lateral direction from the holding portion 21. In this embodiment, one of the angle-shaped pieces is welded to the holding portion 21 as the holding portion connecting piece 23, and the other is set as the protruding piece 22. Yes.
In the illustrated example, the protruding piece 22 is a rectangular piece in plan view, and may have a blade with a narrow tip so that the protruding piece 22 can easily bite into the side surface of the root pot 1.
Here, the root pot may be one in which soil remains attached to the root, or one obtained by rooting this with a rough rope.
In the latter case, the projecting piece 22 pushes between the rough ropes that are wound around the roots, or cuts a part and cuts them into the root pot.

Then, the catch member 20 is set so that the tip of the projecting piece 22 goes to a midway position in the height direction of the side surface of the root pot 1, and a nail is driven into the vertical column member 3 from the hole 23 of the holding portion 21. The catch member 20 is fixed at a predetermined position of the vertical column member 3.
Here, the catch member 20 may be temporarily fixed to the vertical support member 3.

  Next, the vertical strut member 3 is provided with a tightening member 10 for fastening the vertical strut members 3 to each other using a wire rope or the like above the mounting position of the root member 4, and the upper end of the tightening member 10 projects above the ground. It is mounted at such a position that it does not, that is, at the upper end of the recess 2 in the illustrated example, substantially coincides with the ground line.

  As the tightening member 10, a member having a known configuration can be used as appropriate, but in the case of this embodiment, as an example, a bracket 11 c that pivotally supports a bolt 11 b for connecting a wire rope W to the tip of one of the rings 11 a. And a first fastening tool 11 equipped with a winch 11f with a reverse rotation preventing claw 11e that pulls and winds the wire rope W through an arm 11d at a position perpendicular to the arm 11d, and a sheave 12b serving as a fixed pulley. The second fastener 12 made of the attached ring 12a is used (see Japanese Patent No. 3860797).

Therefore, as shown in FIG. 2, the ring 11 a of the first fastener 11 is inserted and attached to one vertical strut member 3, and the second tightening member 3 is attached to the second vertical strut member 3. The ring 12a of the accessory 12 is inserted and attached.
Then, the wire rope W having one end tied to the bolt 11b of the first fastener 11 is passed through the sheave 12b of the second fastener 12, and the other end is taken up by the winch 11f of the first fastener 11. Then, the vertical strut members 3 are pulled and tightened in the shrinking direction of the wire rope W wound in an annular shape.

Accordingly, the vertical support member 3 driven slightly obliquely is tightened substantially vertically so as to press the side surface of the root pot 1, and at the same time, the protruding piece 22 of the catch member 20 is moved in the height direction of the side surface of the root pot 1. Encroach into the middle position.
This is because the root pot 1 extends in the lateral direction at the midway position from above in the height direction, and extends downward at the lower position, so that even if the protruding piece 22 bites into the root pot 1. Without cutting the roots in the root pot 1, there is no obstacle to root growth.
In the present invention, the midway position in the height direction of the side surface of the root pot 1 includes all the intermediate regions excluding the upper end and the lower portion of the root pot 1.

  Moreover, since the vertical support | pillar member 3 is tightened strongly, when there is a clearance gap between the catch member 20 and the vertical support | pillar member 3, the holding part 21 of the catch member 20 inclines, and the corner | angular part of the holding | maintenance part 21 and the vertical support | pillar The catch member 20 can be firmly fixed to the vertical strut member 3 by tightening with the member 3.

After the tightening and fixing, the vertical strut members protruding from the upper ends of the rings 11a and 12a of the first and second fasteners 11 and 12 are cut off.
The cut piece 3 ′ of the vertical support member 3 is inserted into the second ring 5b of the root anchor fitting 5 and used as a root anchor member 5 serving as an anchor (see FIG. 1B).
Next, by refilling the concave portion 2, the root pot 1, the root anchor member 4, and the vertical support member 3 are embedded, and the vertical support member 3 functions as an underground support.

In the said Example, although the upper part of the vertical support | pillar member 3 was cut | disconnected and utilized as the root member 4, you may prepare separately the wooden root member 4, such as a log, beforehand.
Moreover, although the vertical support | pillar member 3 showed the example embed | buried in the ground to an upper end, the upper part may be exposed to the ground or may protrude.

In the above embodiment, the case where only the fastening member for final fastening is used as the fastening member is illustrated. However, a fastening member for final fastening is provided in the middle position of the vertical column member 3, and the fastening for final fastening is performed. It is good also as a structure which provides the fastening member for temporary fastening in the upper position from an attaching member, and fastens it in two steps up and down (not shown).
In this case, the catch member 20 is attached to the vertical column member 3 at a position below the fastening member for final fastening.
After tightening, the upper part of the vertical column member 3 protruding upward from the final fastening member can be cut, and the cut piece can be used as the root member 4.

Although the case where four vertical strut members are used is illustrated in the above embodiment, the number of the vertical strut members may be plural.
In addition, the structure of the tightening member 10 is not limited to the present embodiment. In short, any structure may be used as long as a plurality of vertical strut members driven along the periphery of the root pot are pressed against the root pot and tightened.

The catch member 20 according to the second embodiment shown in FIG. 4 includes a gap adjusting means for closing the gap between the holding portion 21 and the vertical column member 3 when the holding portion 21 has a larger diameter than the vertical column member 3. .
The gap adjusting means has a hole formed in the holding portion 21 at a position spaced from the nail hole of the fixing component 24, and the nut 25 is held in the holding portion so that the hole and the screw hole of the nut communicate with each other. 21 is welded to the outer wall 21, and a bolt 26 is screwed onto the nut 25.

Therefore, by screwing the bolt 26 back and forth along the screw of the nut 25, the tip of the bolt 26 can be advanced and retracted by the holding portion 21, and there is a gap between the vertical strut member 3 and the inner peripheral surface of the holding portion 21. Even if this occurs, it is possible to suppress backlash between the holding portion 21 and the vertical column member 3 by pressing the tip of the bolt 26 against the vertical column member 3.
Since other configurations are the same as those of the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.
In addition, the holding | maintenance part 21 can change the position of the protrusion piece 22 suitably by reversing up and down.

The shape of the projecting piece 22 of the catch member 20 is not limited to a rectangle, and may be an arbitrary shape.
The catch member 20 shown to Fig.5 (a) shows the case where the protrusion piece 22 is formed in the trapezoid shape by planar view which narrows a horizontal width toward a front-end | tip. The shape is not limited to a trapezoid, and may be a semicircular shape, a semielliptical shape, a polygonal shape, or the like.

Moreover, you may make the front-end | tip of the protrusion 22 into an uneven | corrugated shape.
The protruding piece 22 shown in FIG. 5B shows a case where the tip is formed in a corrugated shape.
Similarly, FIG. 5C shows a case where the fork shape is used.
In addition, the shape of the projecting piece 22 may be any shape that does not inhibit the growth of the roots of the tree even if the shape is cut into the root pot 1.

In the above-described embodiment, the case where one protrusion piece 22 is provided is illustrated, but a plurality of protrusion pieces 22 may be provided above and below.
The catch member 20 according to the fourth embodiment shown in FIG. 6 has a configuration in which a pair of opposing pieces of a metal having a channel-shaped cross section is a protruding piece 22, and a piece connecting the protruding pieces 22 is a holding portion connecting piece 23. ing.
The holding member connecting piece 23 is welded to the outer wall surface of the holding portion 21 to form the catch member 20.
Since other configurations are the same as those in the above-described embodiment, description thereof is omitted.

The catch member 20 may be connected to the fastening member or may be integrally formed.
The catch member 20 ′ shown in FIG. 7 is formed by extending the ring 11 a of the fastening member and integrally forming the holding portion 21, and has a configuration in which one cylindrical body 50 is also used.
According to this, it is only necessary to attach the cylindrical body 50 to the vertical column member 3.
The cylindrical body 50 may have a cap shape whose upper surface is closed. In that case, the fixing component of the cylindrical body 50 may be omitted.

  Although not shown, even if the ring 11a and the holding portion 21 of the fastening member are provided separately, if the ring 11a and the holding portion 21 are connected by a connecting member such as a chain, the ring 11a is By fixing to the vertical column member 3, the temporary fixing of the holding portion 21 and the fixing component for fixing can be omitted.

In the above-described embodiment, the holding portion 21 and the projecting piece 22 are configured such that the holding portion connecting piece 23 is welded by the holding portion 21 and the projecting piece 22 is integrally formed with the holding portion 21. The structure which provided the protrusion piece 22 directly may be sufficient.
Moreover, since the holding | maintenance part 21 should just be fixed to the vertical support | pillar member 3, it does not need to be a cylinder.

The catch member 20 of Example 6 shown in FIG. 8 has a configuration in which a projecting piece 22 is formed integrally with a holding portion 21 ′ having an arc shape in cross section.
In the illustrated example, a fixing component 24 ′ made of nail holes is formed at substantially equal intervals in the holding portion 21 ′.
Then, the holding portion 21 ′ is arranged along one side of the vertical strut member 3 (side surface in the root pot 1 direction), and the nail indicated by the dotted line in the figure from the nail hole of the fixing component 24 ′ By driving into the member 3, the holding portion 21 ′ can be fixed at a predetermined position of the vertical column member 3.

The catch member 20 of the seventh embodiment shown in FIG. 9 includes a plate-like holding portion 21 ″ and a projecting piece that is integrally provided at a midway position in the height direction of the holding portion 21 ″ and protrudes substantially horizontally in the lateral direction. It consists of 22.
The holding part 21 ″ may be one having a curved cross section or a flat one.
The protruding piece 22 may be formed at the upper end or the lower end of the holding portion 21 "and bent by holding the holding portion 21" at a substantially right angle.

The holding portion 21 ″ is integrally provided with a nail-like fixing component 24 ″ projecting inwardly opposite to the projecting direction of the projecting piece 22 on the inner wall surface thereof.
Accordingly, the protruding piece 22 can be attached by driving the nail-like fixing component 24 ″ into the vertical support member via the holding portion 21 ″.

The support structure is not limited to the above embodiment.
FIG. 10 shows a cross beam type strut structure.
In this case, a catch member 20 is attached in the middle of the vertical column member 3 made of a log or a single pipe pipe, and a pipe (length can be adjusted in the illustrated example) or a cut log combined at the bottom of the vertical column member 3 It consists of the structure which connected the cross beam member 8 which consists of.
Other configurations are the same as those in the above embodiment.

The present invention may be used by replacing each configuration of the above embodiment.
Further, the present invention may be applied to a log or pipe vertical column member 3 in a cross beam type column structure (see FIG. 10) using a cut log or a pipe instead of the embodiment.
In addition, it goes without saying that various design changes can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Root pot 2 Recessed part 3 Vertical support | pillar member 3 'Cut piece 4 Root anchor member 5 Root anchor fixture 5a 1st ring 5b 2nd ring 10 Fastening member 11a Ring 11b Bolt 11c Bracket 11d Arm 11e Reverse rotation prevention claw 11f Winch 12 1st 2 Fastener 12a Ring 12b Sheave 20, 20 'Catch member 21, 21', 21 "holding part 22 Projection piece 23 Holding part connecting piece 24, 24 ', 24" fixing component T Tree W Wire rope

Claims (5)

The upper part of the vertical strut member to be driven along the peripheral surface of the root pot in the recess formed on the ground on which the root pot of the tree is placed is tightened along the side surface of the root pot with the tightening member, and the root with the vertical strut member. In the support structure of the planted tree that is fixed so as to sandwich the side of the pot,
A catch member is attached to a position below the attachment position of the fastening member of the vertical strut member and corresponding to the side surface of the root pot,
A holding part that is fixed or restrained to the vertical strut member, and a projecting piece that is formed integrally with the holding part and enters the side surface of the root pot when the vertical strut member is tightened by the tightening member; A support structure for planted trees characterized by comprising:   The planting according to claim 1, wherein the projecting piece is attached to the vertical support member at a position where the projecting piece can enter a midway position in the height direction of the side surface of the root pot when the tightening member is tightened. Support structure of trees. The holding part of the catch member is composed of an annular body that is externally fitted to the vertical column member,
The planted tree support structure according to claim 1 or 2, wherein the projecting piece of the catch member is a piece that projects laterally from the annular body and can bite into a side surface of the root pot. The vertical strut member consists of log piles,
4. A hole for temporarily fixing or fixing the annular body to the vertical strut member with a fixing tool such as a nail at a predetermined position of the vertical strut member in the annular body of the catch member. Support structure of planted tree as described in 2. The upper part of the vertical strut member to be driven along the peripheral surface of the root pot in the recess formed on the ground on which the root pot of the tree is placed is tightened along the side surface of the root pot with the tightening member, and the root with the vertical strut member. In the method of supporting planted trees that are fixed so as to sandwich the side of the pot,
At a midway position in the height direction of the vertical strut member, a catch member consisting of a holding portion fixed or restrained to the vertical strut member and a projecting piece protruding from one side of the holding portion to one side is mounted.
A fastening member is mounted above the catch member with the vertical strut member,
When tightening the vertical strut member with the tightening member, the projecting piece of the catch member bites into the side of the root pot and tightens, and the planted tree is formed by filling the recess and embedding the root pot in the ground. Method.

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