JPH0988074A - Slope protection construction method and slope frame member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to plant substantially the whole slope areas with trees by fixing a box-shaped slope protection member which extends in two directions which cross each other and whose upper part is opened with the slope with an anchor bolt and constructing planting inside. SOLUTION: A slope protection member comprises a vertical beam 2 and a horizontal beam 3 which extend in two directions which cross each other and the whole shape is formed like a cross. An anchor driven into a slope ground is inserted into a through hole provided in an anchor chamber 13 and takes a reaction force from a reaction receiving chamber and introduces a prestress into the anchor. Then, the head of the anchor is fixed with the slope protection member 1. Then, the setting work of the slope protection member 1 is repeated as described above, thereby constructing frame-like slope protections with a large number of slope protection members 1 and fixing connecting boards 21 and 22 with bolts or the like and connecting each of the adjacent slope protection member 1. Sandbags filled with soil are housed in a planting chamber 14 and garden plants are planted, thereby executing planting work and executing vegetation work even inside the lattices formed with the slope protection member by spraying seeds as in the past as usual and planting substantially the whole surface of the slope with trees.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slope protection method and a slope member. More specifically, the present invention relates to a method for planting the slope frame member itself to green the slope surface.

[0002]

2. Description of the Related Art Various protection methods for slopes have been proposed in the past, but in recent years, in addition to the stability of the slope itself, greening has been emphasized from the viewpoint of landscape. One of the construction methods in consideration of such greening is to build a grid-shaped legal frame made of cast-in-place concrete on the slope, and spray plant seeds etc. inside the lattice frame.
Alternatively, a method of vegetation is known by installing a vegetation mat. Also, instead of cast-in-place concrete,
A method of constructing a grid-shaped method frame using a large number of cross-shaped precast concrete blocks is also known. This method also aims at greening by applying vegetation inside the lattice frame.

The legal frame constructed by the above-mentioned construction method has a lattice-like pattern on the slope, and therefore, in combination with the vegetation inside the lattice frame, it can be said that it has a beautiful appearance in some aspects. However, on the other hand, the concrete structure is exposed on the slope, impairing the aesthetics. Further, in the case of cast-in-place concrete, not only a great deal of labor is required for construction on the slope, but also the construction period is long. In this respect, in the case of a precast concrete block, it is sufficient to bring in the factory-produced one to the site and install it.
Although there is no such difficulty, it is heavy and not easy to carry in.

[0004]

SUMMARY OF THE INVENTION The present invention has been made on the basis of the above technical background, and has the following objects.

An object of the present invention is to provide a slope protection method and slope member which can be planted inside the slope member itself so that almost the entire slope can be greened and which is lightweight and easy to construct. To provide.

[0006]

The present invention adopts the following means in order to achieve the above object.

That is, the present invention comprises a step of planting inside a box-shaped legal frame member that extends in at least one direction and has an upper opening, and a step of fixing the legal frame member to the slope by an anchor. And a step of constructing a lattice-shaped method frame by installing a large number of the method frame members on a slope, and a slope protection method.

Further, the present invention is a slope protection method characterized in that the slope frame members installed adjacent to each other are connected to each other.

Further, the present invention resides in a slope protection method characterized in that a sandbag filled with soil is stored inside the slope frame member.

Further, the present invention is a slope protection method characterized by covering the opening with a net after planting the slope frame member.

Furthermore, the present invention is a box-shaped method frame member that extends in at least one direction and has an open upper portion, the interior of which is divided into a plurality of chambers along the direction of extension, and the center of the chambers is defined. Is a anchor chamber for fixing to the anchor, and the other chamber is a planting chamber for planting.

Further, the present invention is a legal frame member characterized by comprising a vertical beam and a horizontal beam extending in two directions orthogonal to each other, and the vertical beam and the horizontal beam intersect at each central portion.

Further, the present invention is the method frame member, characterized in that a connecting member is provided at each end of the vertical beam and the horizontal beam.

Further, the present invention is a method frame member characterized in that a plurality of projections are provided on the outer surface of the bottom portion.

Further, the present invention is the method frame member, wherein the projection length of the projection from the bottom is adjustable.

According to the present invention, a box-shaped member having an open top is used as the method frame member, and the planting is applied to the inside thereof. That is, the slope frame member functions not only as a slope protection structure but also as a planter. Therefore, the slope frame member is covered with planted trees or the like, and the slope surface can be entirely greened.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 is a plan view of a method frame member according to the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is B of FIG.
FIG. 4 is a cross-sectional view taken along line B. The method frame member 1 is a box-shaped member having an open top, and is made by processing a metal material such as a steel plate. The vertical frame member 1 is composed of a vertical beam 2 and a horizontal beam 3 extending in two directions orthogonal to each other, and the vertical beam 2 and the horizontal beam 3 intersect at their central portions. That is, the legal frame member 1 has a cross shape as a whole.

More specifically, the frame member 1 includes a bottom plate 4 and
Longitudinal side plates 5 and 6 standing on the bottom plate 4 along each longitudinal direction of the vertical beam 2 and the horizontal beam 3 and width direction side plates 7 and 8 standing on the width direction. The method frame member 1 has a box shape with an open top. At the upper ends of the longitudinal side plates 6 and 7, inward projecting plates 9 and 10 for fixing a net-like lid made of expanded metal or the like described later are provided. A large number of protrusions 11 are provided on the outer surface of the bottom plate 4 at appropriate intervals.

A plurality of partition plates 12 are provided at appropriate intervals between the longitudinal side plates 5, 5 and between 6, 6 so that the inside of the method frame member 1 is divided into a plurality of chambers 13, 14. ing. Of the chambers 13 and 14, the central chamber 13 constitutes an anchor chamber for fixing an anchor described later, and the other chambers 14 constitute a planting chamber for planting. A reaction force receiving plate 15 is provided in the anchor chamber 13. An anchor insertion holes 16 and 17 are provided in the bottom plate 4 that defines the reaction force receiving plate 15 and the anchor chamber 13. A reinforcing cylinder 18 such as a cylinder through which an anchor can be inserted is provided between the reaction force receiving plate 15 and the bottom plate 4.

The holes 19 provided in the bottom plate 4 for partitioning the planting chambers 13 are for draining water. Connection plates 20 and 21 are provided at both ends of the vertical beam 2 and the horizontal beam 3, respectively, for connecting the vertical beams and the horizontal beams of the adjacent legal frame members. Since the method frame member 1 is made of a steel plate or the like as described above, the inner and outer surfaces thereof may be rustproofed, for example, urethane sprayed.

Next, an embodiment of a slope protection method using the above-mentioned slope member will be described with reference to FIGS. 4 and 5.
FIG. 4 is a perspective view showing a state in which the legal frame member 1 is installed on the slope to build a legal frame, and FIG. 5 is a sectional view of the installed legal frame member. A plurality of anchors 30 are driven into the slope 50 at predetermined intervals. A well-known construction method can be adopted for the anchor work, and the anchor 30 is inserted into a drilled hole formed in the ground 50 and fixed.

The anchor 30 is inserted into the through holes 16 and 17 provided in the anchor chamber 13 of the method frame member 1, and the reaction force is received from the reaction force receiving plate 15 to introduce prestress to the anchor 30, and then the anchor head. The part 31 is fixed to the method frame member 1.
The anchor head 31 is covered with a cap 32. In this way, the method frame member 1 is fixed, and in this state, the protrusions 11 pierce the natural ground 50 to prevent the legal frame member 1 from being displaced, and the load on the natural ground is dispersed to alleviate the unsteady state. It

A sandbag 33 filled with soil in the planting room 14
Is planted by storing trees and planting trees 34. Then, the opening of each planting room 14 is covered with a net-like lid 35 made of expanded metal or the like. As shown in FIG. 6, two mesh-shaped lids 35 each having a rectangular shape with a semicircular cutout 36 are used for each planting room 14. Each net-like lid 35 is fixed to the overhanging plates 9, 10 so that the notches 36, 36 form a circular hole surrounding the root of the tree 34. For convenience, a state in which only the mesh lid 35 is fixed is shown in a part of FIG.

The sandbag 33 is filled with a water retaining material such as pumice or zeolite, or a water retaining agent such as glass power (trade name). It is also possible to store the soil directly in the planting room 14 without using the sandbag 33. The type of the tree is not limited, but shrubs that do not have large roots and that take root only with the sandbag 33 inside the legal frame member 1 are preferable. It is also possible to provide a large number of holes in the bottom plate 4 of the framing member 1 within a range that does not reduce the strength, and to establish roots in the ground through these holes. This planting may be carried out at the construction site or in advance at a factory or the like.

The installation work of the law frame member 1 as described above is repeated to construct a lattice-shaped law frame by a large number of law frame members 1. Then, the connecting plates 21 and 22 are fixed by a fixture such as a bolt, and the vertical beams 2 and 2 and the horizontal beams 3 and 3 of the adjacent frame members 1 and 1 are connected. By connecting the legal frame members in this way, the legal frame members cooperate to press down the natural ground, and the stability of the natural ground is improved. Seed spraying and vegetation work using a vegetation mat or the like are performed on the inside 37 of the lattice formed by the method frame as in the conventional case.

Since the inside of the slope frame member 1 is divided into a plurality of planting chambers 14 by the partition plate 12, even when the slope frame member 1 is installed on a steep slope, the sandbag 33 or the soil inside is fixed in position. Securely held in. That is, if there is no partition plate, the sandbag 33 or the soil inside may be biased toward the lower side of the slope due to the gradient in the long term, and a large void may occur at the upper side to expose the root of the tree. By partitioning the plant into a plurality of planting rooms, such a phenomenon can be reliably prevented.

FIG. 7 is a plan view showing another embodiment of the method frame member according to the present invention. This method frame member 41 is a vertical beam 2
It consists of only. Law frame member 1 of the above embodiment
Is applied to the ground having a small bearing capacity, but the slope frame member 41 is applied to a rock having a relatively large bearing capacity. The concrete structure of the legal frame member 41 is the same as the legal frame member 1 except that there is no horizontal beam.
Is almost the same as. However, the legal frame member 41 is also provided with the connecting plates 42 on both sides of the central portion.

FIG. 8 is a perspective view showing an embodiment of a slope protection method using the slope frame member 41. The method frame member 41 is installed on the slope and connected in the vertical direction in the same manner as in the above-described embodiment. The horizontal frame members 41, 41 adjacent to each other are connected by a mesh structure 43. As shown in FIG. 9, the reticulated structure 43 includes a reticulated groove member 44 formed by processing a reticulated body such as expanded metal into a U-shaped cross section, and a reticulated lid 45.

At the time of construction, a mesh groove member 44 is installed between the method frame members 41, 41 so that the opening faces upward, and rods 46 made of a metal material such as steel are provided at the four inner corners thereof.
Place. Then, both ends of the rod 46 are connected to the connecting plate 42.
Fixed to. The rod 46 has a turnbuckle 47,
It is possible to adjust the length. Reticulated channel member 44
Is fixed to the rod 46 at an appropriate position with a wire (not shown) such as wire. Further, the net-shaped channel members 44 are fixed to the ground by short anchors 49 arranged at appropriate intervals.

A sandbag 48 filled with soil containing seeds is housed inside the net-like channel member 44, and an opening is provided with a net-like lid 45.
Close with. The net-like lid 45 is fixed to the net-like channel member 44 by the same wire material as described above. Although the net-like structure 43 does not have many functions of positively pressing the ground and stabilizing the slope, it has a function of preventing the outflow of the topsoil due to rainwater and suppressing the erosion of the slope. Vegetation can be achieved by the seeds put in the sandbags 48.

FIG. 10 is a sectional view showing another example of the protrusion. The protrusion 11 is a bolt having a sharp tip. The bottom plate 4 is provided with a mounting hole 51 for the protrusion 11. The protrusion 11 is inserted into the mounting hole 51, and the bottom plate 4 is fixed by the nut 52.
Fixed to. With such a protrusion 11, it is possible to adjust the protruding length from the bottom plate 4 by changing the fixed position. Therefore, it is possible to cope with unevenness of various sizes of the natural ground 50, and it is possible to surely prevent the unsealed state.

[0032]

As described above, according to the present invention, greening of the entire slope can be achieved, and a slope protection structure excellent in landscape can be constructed. Since the method frame member is box-shaped, it is lightweight, can be easily carried into and installed on site, and is excellent in workability.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a method frame member according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

3 is a sectional view taken along line BB of FIG.

FIG. 4 is a perspective view showing an embodiment of a slope protection method according to the present invention.

FIG. 5 is a cross-sectional view showing an installed state of a method frame member.

FIG. 6 is a perspective view showing a mesh lid.

FIG. 7 is a plan view showing another embodiment of the method frame member.

FIG. 8 is a perspective view showing another embodiment of a slope protection method.

FIG. 9 is a cross-sectional view showing a mesh structure.

FIG. 10 is a cross-sectional view showing another example of the protrusion.

[Explanation of symbols]

 1 ... Method frame member 2 ... Vertical beam 3 ... Horizontal beam 4 ... Bottom plate 5,6 ... Longitudinal side plate 7, 8 ... Width side plate 9, 10 ... Overhanging plate 11 ... Protrusion 12 ... Partition plate 13 ... Anchor chamber 14 ... Planting Chamber 15 ... Reaction force receiving plate 16, 17 ... Insertion hole 19 ... Drainage hole 30 ... Anchor 33 ... Sandbag 34 ... Tree 35 ... Net-like lid

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kiyoshi Todoroki 515 Minamiyajima Co., Ltd. Nagano City, Nagano Prefecture (72) Inventor Mikio Nakazawa 515 Minamiyajima Co., Ltd. Nagano City, Nagano Prefecture (72) Inventor Kazu Kobayashi People 515 Minamiyajima Co., Ltd. Nagano City, Nagano Prefecture Kudofujinai Co., Ltd. (72) Inventor Masami Tozumi 515 Minamiyajima Co., Ltd. Nagano City, Nagano Prefecture Kakufujinai Co., Ltd.

Claims (9)

[Claims] 1. A step of planting inside a box-shaped method frame member that extends in at least one direction and has an open upper portion; a step of fixing the method frame member to a slope by an anchor; A slope protection method comprising a step of installing a frame member on a plurality of slopes to construct a lattice-shaped slope frame. 2. The slope protection method according to claim 1, wherein the slope frame members installed adjacent to each other are connected to each other. 3. The slope protection method according to claim 1, wherein a sandbag filled with soil is housed inside the slope frame member. 4. The planting method is applied to the method frame member, and then the opening is covered with a net-like body.
The listed slope protection method. 5. A box-shaped method frame member that extends in at least one direction and has an open top, the interior of which is divided into a plurality of chambers along the direction of extension, and the central chamber of the chambers. A legal frame member comprising an anchor chamber for fixing to an anchor, and another chamber constituting a planting chamber for planting. 6. The vertical frame member comprises a vertical beam and a horizontal beam extending in two directions orthogonal to each other, and the vertical beam and the horizontal beam intersect at each central portion. Legal frame member. 7. The legal frame member according to claim 6, wherein a connecting member is provided at each end of the vertical beam and the horizontal beam. 8. The method frame member according to claim 5, 6 or 7, wherein a plurality of protrusions is provided on the outer surface of the bottom portion. 9. The method frame member according to claim 8, wherein the protrusion length of the protrusion from the bottom portion is adjustable.