JP2829836B2 - False tree support structure for avalanche prevention - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention is to establish a horizontal or vertical space on a slope where there is a risk of an avalanche.
The present invention relates to a dummy tree support structure for preventing an avalanche for preventing an avalanche.

[0002]

2. Description of the Related Art Hitherto, on slopes where there is a risk of an avalanche or the like, avalanche prevention fences such as a fence type and a suspension fence type for preventing the occurrence of an avalanche etc. are arranged at horizontal intervals or vertical intervals. Recently, however, pseudo-trees for avalanche prevention have been developed which are relatively simple in structure and easy to construct, and are adapted to the natural environment.

[0003] The pseudo-tree for avalanche prevention is, for example, as shown in FIG. 4, a plurality of branches b formed of a steel pipe or the like are directed obliquely upward on a trunk a formed of a steel pipe or the like, and an appropriate vertical interval is provided. Protruding in multiple stages and in multiple directions, the surface of the trunk portion a and each branch portion b is a pseudo tree c formed in a bark shape (shape, coloring, etc.), and is placed on the slope s at a horizontal interval or a vertical interval. The lower end of the artificial tree is fitted to each of the pile foundations d to be established, and the upper part of the artificial tree c is connected to and supported by the pile foundation e which is cast on the upper part of the slope with the horizontal stay w, and is adapted to the natural environment. It is designed to receive snow cover and prevent avalanches.

[0004]

In the conventional artificial tree for preventing avalanches, the upper part of the artificial tree is supported by a horizontal stay as described above. Therefore, in addition to the horizontal snow pressure due to snow accumulation, creep deformation or the like is caused. The sinking force is applied to the artificial tree, and the artificial tree sinks and leans forward to the upper side of the slope, and the left and right loads become uneven due to changes in the slope, etc. There are problems such as impairment of snow stopping performance.

The present invention has been developed in order to solve the above-mentioned problems. The object of the present invention is to support the upper part of the trunk with an appropriately upwardly inclined stay,
The left and right branches are supported by side stays, each stay is made up of two sets, and they are oriented diagonally upward to support them. To provide a support structure.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a pseudo-tree for preventing avalanches, which is formed by attaching a plurality of branches to a trunk formed of a steel pipe or the like, and is formed on a slope with a pile foundation or the like. By supporting the upper part with a moderately upwardly inclined stay, preventing the sinking and forward leaning of the artificial tree and basically improving the snow stopping performance, and furthermore, by supporting the left and right branches with both side stays, Increasing the strength of the artificial tree and preventing the rotation to further enhance the snow protection performance. Each stay is made up of two sets and supported diagonally upward to further enhance the snow protection performance and reliability together with the artificial tree support strength. ing.

[0007]

[Function] A pseudo-tree for preventing avalanches, which is formed by attaching a large number of branches to a trunk formed of a steel pipe or the like and formed on a slope with a pile foundation, at least the upper part of the trunk is directed upwards by 10-4.
The stay is supported by a 5 ° inclination stay, which effectively receives the snow load of the artificial tree and prevents the sinking and forward inclination of the stay, basically stabilizing the establishment of the artificial tree and improving the snow stopping performance and reliability. .

Furthermore, the left and right branches of the artificial tree are supported by side stays, respectively, to increase the support strength of the artificial tree to prevent rotation, and to anchor an anchor on the mountain side between the horizontally adjacent artificial trees. A set of two stays supporting the upper part of the trunk is directed diagonally upward and connected to this anchor for support, or both side stays are directed diagonally upward and connected to this anchor for support. In addition, the support strength of the artificial wood is further enhanced, and the avalanche prevention performance and reliability are effectively enhanced together with the landscape.

[0009]

FIG. 1 shows a first embodiment of the present invention, FIG. 2 shows a second embodiment, and FIG. 3 shows a third embodiment. In the drawing, reference numeral 1 denotes a trunk 1a formed of a steel pipe or the like and a large number of branches 1b. , 1c attached pseudo tree, 2
Is a pile foundation formed of a hollow tube, etc., and 3 and 3a are anchors cast on the mountain side or the mountain side between adjacent pseudo trees, 5a,
b, c, 25a, b, c are stays supporting the trunk, 6 is a sleeve for connecting the stays, 15a, b, c, 35a,
b and c are side stays supporting the left and right branches 1c, and θ and
θ1 is the upward inclination (angle) of the stay, and s is the slope.

In the first embodiment shown in FIG. 1 (see FIG. 1), a pseudo wood 1 formed by attaching a large number of branches 1b and 1c to a trunk 1a formed of a steel pipe or the like is established on a slope s with a pile foundation 2 or the like. An avalanche-preventing pseudo-wood supporting structure characterized in that at least the upper part of the trunk 1a is connected to and supported by an anchor 3 cast on the mountain side with a stay 5a inclined upward by 10 to 45 °. I'm sorry.

In a second embodiment (see FIG. 2), the left and right branch portions 1c of the pseudo tree 1 are connected to the anchor 3 by side stays 15a, 15b, 15c, respectively, in the pseudo tree support structure for preventing avalanches. It has a dummy tree support structure for avalanche prevention, which is characterized by being supported by a support.

In the third embodiment (see FIG. 3), an anchor 3a is provided on the mountain side between the adjacent pseudo trees 1 in the avalanche prevention structure to support the upper portion of the trunk 1a. The two stays 35a, b, and c supporting the left and right branches 1c of the artificial wood 1 are respectively inclined obliquely upward, and two sets of the upwardly inclined stays 25a are connected to the anchor 3a so as to be directed obliquely upward. And an anchor 3a for preventing avalanches.

More specifically, the artificial wood 1 is composed of a trunk 1a and a number of branches 1b and 1c. The trunk 1a is formed of a steel pipe or the like, and is appropriately connected by connecting means such as fitting or welding as required. The branches 1b and 1c are formed integrally with each other by a connecting means such as a steel pipe or the like and fitted or welded as necessary, and are integrally formed into an appropriate size, and are appropriately formed on the trunk 1a. At the top and bottom of the trunk, they are integrally projected toward the upper oblique direction, and the surface of this trunk and each branch is painted, a sheet of synthetic resin is attached, or a fiber-reinforced plastic sheet is wound around. To form a pseudo-skin by coloring the tea system or dark green system, etc., and applying irregularities as necessary, and attaching a sheet such as a leafed cord or a synthetic resin formed with leaves as necessary, or Fiber-reinforced plastic sheets, etc. can be used on many branches and trunks of artificial trees. Or further 擬木 by being arranged (not shown), by fixing the base plate to the lower portion of the stem to prevent subsidence and tilting of 擬木 (not shown). The artificial wood 1 is established on a pile foundation 2 such as a pipe anchor cast on a slope s or a concrete foundation (not shown).

For the establishment of the artificial wood 1, a pile foundation 2 (pipe anchor or the like) with teeth 2a shown in the figure, which is preferably easily installed on the slope s, is applied, and the trunk of the artificial wood is placed on the upper part of the installed pile foundation 2. The lower part of the trunk of 1a is fitted, fixed and established. If necessary, it can be detachably fixed so that the artificial wood can be extracted at any time in summer or the like, or integrally connected by means such as welding. In addition, when the scaffolding on the slope is good, it is also possible to cast a concrete foundation (not shown) and bury the lower part of the trunk 1a of the artificial tree to establish it.

In the first embodiment shown in FIG. 1, a pile foundation 2 with teeth 2a is cast on a slope s, and a trunk 1 of a pseudo wood 1 is placed on the upper part of the pile foundation.
The lower part of “a” is fitted and fixed and established in a state of being properly buried. An anchor 3 is cast on the hill side, and at least the upper part of the artificial tree is connected to the anchor by a stay 5a (wire rope or the like) with a fixing metal such as a sleeve 6 to support the anchor. In particular, the upper part of the trunk 1a of the artificial tree 1 faces upward 10 to
The structure is supported by a stay 5a having a 45 ° inclination θ, and the middle part and lower part of the artificial tree are supported by stays 5b and 5c further inclined θ1 as shown in the drawing, if necessary. In addition, the artificial trees 1 are arranged in rows with an appropriate horizontal interval on the slope s, and are arranged in multiple stages with an appropriate vertical interval to receive snow and prevent avalanches and the like.

In the false tree support structure for preventing avalanches according to the first embodiment, when snow is deposited as shown by a dashed line in FIG. 1A, the load F (horizontal snow pressure and creep deformation, etc.) is applied to the dummy tree 1 by the snow. 5), while supporting the upper part of the artificial tree and tilting it upward by 10 to 45 ° θ.
The support force of the artificial tree 1 by a effectively functions as a reaction force substantially parallel to the load F, effectively receives the load due to snowfall, prevents the artificial tree from sinking, leaning forward, etc., and stabilizes this established state. At the very least, it demonstrates excellent snow stopping performance and reliability. The upwardly inclined stay 5b supporting the middle portion of the artificial tree further enhances the above-described functions and effects. Furthermore, the upwardly inclined stay 5c supporting the lower part of the artificial tree is a slope s.
Even if the anchor force at the lower part of the artificial tree is reduced due to the collapse of the artificial tree, the artificial tree is stabilized upright and the snow stopping performance and reliability are further improved. The upward slope θ of the stay 5a is obtained by experimenting with a numerical value that effectively receives the load due to snowfall corresponding to the slope of the slope, and is upwardly 10 ° to 45 ° corresponding to the slope of the slope.
By setting the angle within the range of the inclination, the above-described excellent operation and effect can be obtained.

The second embodiment shown in FIG. 2 is the same as the first embodiment, except that the left and right branches 1c of the pseudo tree 1 are anchored by side stays 15a and b and c. The side stays 15a, 15b, and 15c have a characteristic that the supporting strength of the branch 1c and the supporting strength of the artificial tree are increased, and the side stays 15a, 15b, and 15c prevent the artificial tree from tilting forward and sideways and prevent rotation. In this way, the artificial wood can be further stabilized to improve snow stopping performance and reliability.

FIG. 3 shows a third embodiment of the present invention, in which a pseudo-tree 1 is provided in the above-mentioned pseudo-tree supporting structure for preventing avalanches.
An anchor 3a is cast on the mountain side between the stays, and at least an upwardly inclined stay 25a (25b, 25c as necessary) supporting at least the upper portion of the trunk 1a is formed into a two-piece set, and each is directed obliquely upward to the anchor 3a. Side stays 35a connected to each other or supporting the left and right branches 1c of the artificial tree 1;
The b and c are connected to the anchor 3a, respectively. The upwardly inclined stay and the two side stays of the two-piece set increase the strength of supporting the artificial wood and prevent forward leaning and left and right tilting.
Improve the snow protection performance and reliability by further stabilizing the artificial wood. The number of the anchors 3a can be easily increased by one or two per row.

The support structure of each embodiment shown in the drawings can be easily attached to an existing artificial wood. In addition, the pseudo tree of each embodiment is:
If necessary, it is diversified by bending and forming, attaching leaves or attaching a net with leaves, and further making it into a pseudo tree.

[0020]

As described above, the present invention relates to a pseudo-tree for preventing avalanches in which a pseudo-tree formed by attaching a large number of branches to a trunk formed of a steel pipe or the like as described above is established on a slope with a pile foundation or the like. The upper part is supported by a stay with an upward inclination of 10 to 45 °. This stay prevents the sinking and forward leaning of the artificial tree, stabilizes the artificial tree, and basically improves the landscape and snow stopping performance and reliability significantly with the landscape. I have.

Furthermore, the left and right branches of the artificial tree are supported by side stays to increase the support strength of the artificial tree and prevent rotation.
In addition, anchors are cast on the mountain side between adjacent artificial trees, and at least two stays that support the upper part of the trunk are supported diagonally upward, or both side stays that support the left and right branches. , Which is oriented diagonally upward to further enhance the strength of the artificial tree and stabilize it to further enhance the snow stopping performance, thereby further improving the avalanche prevention performance and reliability as well as the landscape overall.

Further, these support structures can be selected and adapted to various types of slopes, snow cover, etc., and can be easily and diversified, and can be attached to existing artificial wood as needed, so that they can be provided at a relatively low cost.

[Brief description of the drawings]

FIG. 1A is a front view of a first embodiment of the present invention, and FIG.

FIG. 2 is a front view (A) and a plan view (B) showing a second embodiment.

FIG. 3 is a plan view showing a third embodiment.

FIG. 4 is a front view (A) and a plan view (B) of a dummy tree showing a conventional example.

[Description of Signs] 1 pseudo tree 1a trunk 1b, 1c branch 2 pile foundation 3, 3a anchor 5a, 25a stay 15a, b, c, 35a, b, c side stay s slope slope θ upward slope

Claims (3)

(57) [Claims] 1. A pseudo-tree for preventing avalanches, wherein a pseudo-tree formed by attaching a large number of branches to a trunk formed of a steel pipe or the like is established on a slope with a pile foundation or the like. A false tree support structure for preventing avalanches, which is supported by connecting it to an anchor cast on the mountain side with an inclined stay. 2. The false tree support for avalanche prevention according to claim 1, wherein the left and right branches of the false tree are connected to anchors by side stays, respectively. Construction. 3. The pseudo-tree support structure for avalanche prevention according to claim 1, wherein an anchor is provided on the mountain side between the pseudo-trees adjacent in the horizontal direction to support an upper part of the trunk. Are connected to the anchor by directing them diagonally upward to each other, or both side stays supporting the left and right branches of the pseudo tree are connected to the anchor by directing them diagonally upward. False tree support structure to prevent avalanches.