How to prevent climbing plants

Abstract

To provide a method for preventing climbing of climbing plants, capable of preventing the vines of climbing plants from climbing up a sound insulation wall as they grow and climbing over the wall to invade a main line side, not requiring heavy manual labor in its implementation, and being efficiently and inexpensively implemented. [Solution] A sound-insulating wall 1 is formed by a number of pillars 2 made of H-shaped steel erected at predetermined intervals along the side edges of a road, sound-proofing plates 3 supported by stacking multiple plates between the pillars 2 with their edges inserted into grooves 2A formed between a pair of flanges of the H-shaped steel that make up each pillar 2, and the sound-insulating plates 3 fixed to the pillars 2. When the edges of the sound-insulating plates 3 are inserted into the grooves 2A of each H-shaped steel that makes up the pillars 2 of the sound-insulating wall 1 and fixed in place, gaps G are created where vines of climbing plants can enter and gaps G are sealed with a sealing material to prevent them from becoming starting points for the vines to climb up the pillars 2 as they grow.

Description

[Technical field]

[0001] The present invention relates to a method for preventing climbing plants from growing on the soil of a wall-like structure, such as a sound insulation wall, installed along the side of a highway or the like in order to reduce noise emitted by traveling vehicles (hereinafter referred to as a "sound insulation wall"), which prevents climbing plants growing on the soil of the installation base of the sound insulation wall from growing and climbing along the sound insulation wall, causing the tips of the climbing plants to hang down and invade the main road side, thereby causing adverse effects on vehicles traveling on the road. [Background technology]

[0002] Road structures are broadly divided into three types: earth structures (banks, cuts, etc.), bridges, and tunnels. Of these, roads are mainly made of earth except for the paved surface, and plants invade and grow over time. In particular, when a soundproof wall is installed on the earth and climbing plants grow, they climb along the soundproof wall, eventually climbing over it, and the tips of the climbing plants hang down on the main road.

[0003] In other words, sound insulation walls installed on earthen roads are supported by H-shaped steel beams, with sound insulation panels inserted between the H-shaped steel beams to form a wall-like structure. Climbing plants growing near the base of the H-shaped steel beams installed underground use the gaps between the grooves of the H-shaped steel beams and the sound insulation panels as footholds, growing and climbing along the supports, and once they reach the top of the sound insulation wall, they use this point as a foothold to grow and completely cover the entire H-shaped steel beam, with the tip of the vine drooping down towards the main road.

[0004] Climbing plants have a fast growth rate because they do not have a trunk to hold the plant itself against gravity, and if left unchecked, the climbing plants that have grown on earthen structures as described above will invade the main road and hang down from their tops, creating the risk of contact with traveling vehicles and causing accidents. In other words, if climbing plants hang down beyond the soundproofing walls of an expressway, they can easily come into contact with the tops of tall vehicles such as trucks, and there is concern that this could lead to more unexpected accidents on expressways where many vehicles are traveling at high speeds.

[0005] For this reason, work to remove vines has been carried out in the past, but when the vines entangled in the sound barriers are removed manually using a powered grass cutter, the work is dangerous because a disk cutter that rotates at high speed on a slope is mainly used. In addition, when removing vines hanging down on the main line of expressways, the main line is restricted and the work is done using a high-altitude work vehicle, which creates the risk of congestion and accidents due to traffic restrictions, and this has also created problems that hinder safe and smooth logistics. Even if vines are removed once after spending time and effort, they grow quickly, so the removal work must be repeated during the growing season, resulting in an issue of increased work costs. Furthermore, even when vines are killed by using herbicides, continuous spraying work is required, so in cases where the target area is adjacent to farmland or residential areas, it may not be possible to respond from the perspective of roadside conditions and environmental conservation.

[0006] Therefore, a weed control fence has been proposed that prevents climbing plants from crossing the fence and invading adjacent land, eliminating the need for manual work to remove climbing plants (Patent Document 1).In addition, in the case of climbing plants invading onto the road side, a guard fence has also been proposed that is configured by attaching a net to an existing protective fence (Patent Document 2). [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2012-102494 A [Patent Document 2] JP 2017-206904 A Summary of the Invention [Problem to be solved by the invention]

[0008] However, while the inventions described in the above Patent Documents 1 and 2 are capable of dealing with horizontal objects such as intrusion prevention fences and protective fences, when dealing with vertical objects in the height direction, such as the H-shaped steel of sound insulation walls installed on expressways, the installation area becomes large, which not only results in cost issues but also in the possibility of hindering inspection of the sound insulation walls.

[0009] Therefore, the present invention is primarily intended for sound insulation walls, and proposes a method for preventing climbing plants from climbing up the sound insulation wall as they grow and climbing over the wall to invade the main line side, and it is an object of the present invention to provide a method for preventing climbing plants from climbing up sound insulation walls that does not require heavy manual labor in its implementation, can be implemented efficiently and at low cost. [Means for solving the problem]

[0010] In order to solve the above problems, the present invention is configured as follows. That is, the method for preventing climbing of climbing plants described in claim 1 is a sound insulation wall comprising a plurality of H-shaped steel posts erected at a predetermined interval along the side edge of a road, sound insulation boards supported by stacking a plurality of sheets between the posts with their edges inserted into grooves formed between a pair of flanges of the H-shaped steel posts, and fasteners for fastening the sound insulation boards to the posts, the method comprising the steps of: preventing climbing plants from entering gaps that are generated when the edges of the sound insulation boards are inserted into the grooves of the H-shaped steel posts that are the supports of the sound insulation wall and the boards are stacked in order to install and fasten the sound insulation boards; and fixing the gaps so that the gaps do not become starting points for climbing along the posts as the vines grow. To seal the gaps, a joint material is used to close them. It is characterized by:

[0011] The method for preventing climbing of climbing plants according to claim 2 comprises: The joint material used to seal the gap is treated with a chemical control agent such as a herbicide or other plant repellent. It is characterized by the following. Effect of the Invention

[0014] According to the method for preventing climbing of climbing plants of the present invention, the characteristic of climbing plants is that they climb up the support by using the gaps between the grooves of the H-shaped steel that is the support of the sound insulation wall and the sound insulation plate as footholds, and the gaps are sealed by sealing means. As a joint material By taking measures to seal the gaps more firmly, the vines will be unable to penetrate the gaps. the law of nature, As the vines grow, they will no longer be able to serve as a starting point for climbing along the posts, which prevents the vines of climbing plants from climbing over the soundproof barrier and invading the main line. In this way, by using a joint material that is generally used to fill gaps as a sealing means, even if the condition of the gaps that arise depending on the installation conditions of the H-shaped steel pillars and the installation conditions of the sound-proofing panels between the pillars changes, the gaps can be easily filled and sealed, and the sealing work can be carried out efficiently in a short amount of time, making it economically advantageous to carry out the work.

[0015] Also, as a sealing means By treating the joint material used with a chemical control method such as a herbicide or other plant repellent, the effect of preventing vines from entering the gaps can be further improved. [Brief description of the drawings]

[0018] [Figure 1] 1 is a partial external view showing, in a simplified manner, a state in which a sound insulation wall to which the present invention is applied is installed at the side of a road. [Diagram 2] FIG. 1 is a cross-sectional view showing a cross section of a standard type sound insulation board that is commonly used. [Diagram 3] This is a plan view for illustrative purposes only, showing the state in which a sound-proofing panel is installed on an H-shaped steel support pillar. [Figure 4] This is a partial external view to explain the state before and after putty has been applied to all areas of the interface between the support and sound-proofing board, which have been filled and sealed with joint material. [Diagram 5] FIG. 11 is a partial external view for illustrating a state in which a gap between a support and a sound-proofing plate is covered with a covering material, which is a method that can be implemented in accordance with the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a partial external view showing in a simplified manner the installation state of a sound insulation wall 1 installed along a road of an earth structure 4. This sound insulation wall 1 is formed by stacking several layers of sound insulation plates 3, the edges of which are inserted into grooves formed between a pair of flanges of each H-shaped steel and supported by the grooves, and attaching the layers with fixing devices (not shown). Fig. 1 is a partial external view showing the installation state of a sound insulation wall 1 installed along a road of an earth structure 4. This sound insulation wall 1 is formed by stacking several layers of sound insulation plates 3, the edges of which are inserted into grooves formed between a pair of flanges of each H-shaped steel and supported by the grooves, and attaching the layers with fixing devices (not shown).

[0020] A variety of plants naturally grow in the area of ​​the earth structure 4 at the base of the sound insulation wall 1, and in particular, when climbing plants 8 grow naturally, in the past, as the climbing plants 8 grew, they would twine around the support 2 and climb up the sound insulation wall 1 along the support 2, and the climbing plants would use this support 2 as a starting point to grow, overrun the top of the sound insulation wall 1 and invade the main line side.

[0021] As shown in the cross-sectional view of Fig. 2, a standard type sound insulation panel 3 that is generally used has an outer frame formed of an exterior metal plate 3A such as an aluminum plate, the surface facing the road formed of an exterior metal plate 3B with slits and holes, sound absorbing material 3C such as rock wool or glass wool is installed inside this exterior metal plate 3B, and an air layer 3D is formed on the unpaved surface side. Fig. 3 is a plan view for explaining the state in which a sound insulation wall 1 is installed on H-shaped steel pillars, and as shown in the figure, both ends of the sound insulation panel 3 are inserted and fixed in the grooves 2A between multiple upright H-shaped steel pillars 2.

[0022] Because the soundproofing boards and the like are fixed in a pushed-in state toward the sound-absorbing side in this manner, climbing plants growing on the earthen structure can penetrate into the gap G between the groove 2A of the H-shaped steel and the soundproofing board 3, where they can become entangled and grow, providing a starting point for climbing.

[0023] In the method for preventing climbing of climbing plants according to an embodiment of the present invention, as described above, a gap G occurs between the groove 2A of the H-shaped steel pillar 2 and the sound insulation plate 3 in the construction method for installing the sound insulation wall 1, and the gap G is filled with a commonly used joint material to prevent the intrusion of the climbing vines that serve as the starting point for climbing. According to the applicant's knowledge, the gap between the pillar 2 and the sound insulation plate 3 of a typical sound insulation wall 1 is about 7 cm, and as a joint material for filling this gap, a synthetic resin olefin-based elastomer that has chemical resistance, weather resistance, load resistance, flexibility, smoothness, heat insulation, etc. can be used.

[0024] As a material for filling such gaps, flexible plastic materials and the like can be used, and by sealing the gaps G using a joint material of an appropriate material depending on the state of the gaps G that have actually occurred, it is possible to prevent climbing plants 8 from climbing the sound insulation wall 1. Figure 4 (a) shows the appearance of the sound insulation wall 1 after the gaps G have been filled with such joint material, and as shown in the same figure (b), if putty 9 is applied to all parts of the boundary surface where the support 2 and the sound insulation board 3, which have been filled and sealed with the above-mentioned joint material, come into contact, the gaps G can be sealed more reliably. Furthermore, by adding or applying a plant repellent or mortalizing agent, which is a herbicide component, to these joint materials or putty, an even greater climbing prevention effect can be expected.

[0025] moreover, Although not within the scope of the present invention, it is possible to carry out the present invention Another method to prevent climbing vines Law and As shown in FIG. 5, a covering material 5 having a size that can cover the area including the wall surface centered on the H-shaped steel, which is at least 1 to 2 m high, is installed at the installation base area of ​​the earth structure area 4 where the support 2 is erected, depending on the installation situation, etc., so that the entire area of ​​the support 2 and the sound insulation plate 3, including the gap G occurring between the groove 2A of the H-shaped steel, which is the support 2, and the sound insulation plate 3, is covered and concealed, and the gap G is reliably sealed. You can also .

[0026] The covering material 5 is a synthetic resin sheet of 1.5 m wide and 1.2 m high that can cover the above-mentioned area. The material of the synthetic resin sheet is not limited, but for example, a synthetic resin sheet made of polyester with a surface covered with polyvinyl chloride is used. The width and height can be changed according to the growth of the climbing plants. The peripheral edge of the synthetic resin sheet is fixed to the support 2 and the sound insulation board 3 with adhesive tape 6 so as to be in close contact with the support 2 and the sound insulation board 3, and the adhesive tape 6 is inserted into the step part 3E of the sound insulation board 3 so as to completely adhere to the step part 3E and to prevent any gaps from occurring at this part. In addition, sandbags 7 are piled on the lower end of the synthetic resin sheet against the earth structure 4, and the synthetic resin sheet may be prevented from peeling off at the lower end when the earth structure embankment 4 collapses due to rain or the like.

[0027] In addition to the type of covering material 5 shown in Fig. 5, a semicircular covering material with a height of 1.2 m and a diameter of 20 cm or more can be used to cover the area from the base of the support 2 to the soundproofing walls 3 on both sides of the support 2, and it may be installed in combination with the synthetic resin sheet described above, which can further improve the covering function and ensure the sealing of the gap G. Furthermore, as in the above, a plant repellent / withering agent with herbicide components can be added to or applied to the covering material 5 to further prevent climbing.

[0028] As described above, according to the method for preventing climbing of climbing plants in the embodiment of the present invention, the gap G between the groove of the H-shaped steel that is the support 2 of the sound insulation wall 1 and the sound insulation panel 3 is used as the starting point for climbing, and a countermeasure is taken to seal the gap G after fully considering the characteristics of climbing plants that use this area as a foothold to climb along the support 2.As a result, the vines are unable to enter the gap G and are no longer able to climb along the support 2 as they grow, thereby preventing the vines from climbing over the sound insulation wall 1 and invading the road surface side.

[0029] The climbing prevention method of the present invention can be easily applied to existing sound insulation walls as well as during construction of the sound insulation wall, and since the method is implemented by fully analyzing and considering the fundamental characteristics of climbing plants, it is possible to eliminate the need for periodic vine removal work as in the past, and preventive effects can be expected. Furthermore, since the manual labor required for implementation can be done more efficiently than in the past, if the above-mentioned preventive effect is also achieved, it is possible to improve the efficiency and economy of the sound insulation wall maintenance work itself as well as improve overall safety. Furthermore, even when the present invention is implemented, the sealing state by the sealing means described above can be easily released, so there is no problem when inspecting and maintaining the sound insulation wall. [Industrial Applicability]

[0030] Although the present invention is mainly intended for sound insulation walls installed on roads on earth structures, it can also be applied to sound insulation walls along railway tracks, and can be easily implemented as a countermeasure when problems similar to those of the present invention arise. Considering the rapid growth of climbing plants and the expansion of overgrown areas due to global warming, as well as the total amount of work required to remove climbing plants from sound insulation walls installed in Japan, the economic effect brought about by the action and effect exerted by implementing the present invention is expected to be extremely large. [Explanation of symbols]

[0031] 1. Soundproofing walls 2 Pillars (H-shaped steel) 3. Soundproofing board 3A Exterior metal plate 3B Exterior metal plate with slits 3C Sound absorbing material 3D Air Layer 3E Step part 4 Embankment 5 Covering material 6 Adhesive Tape 7. Sandbags 8. Climbing plants 9 Putty G Gap

Claims

1. A sound-insulating wall comprising a plurality of H-shaped steel posts erected at predetermined intervals along the side edges of a road, sound-insulating plates supported by stacking a plurality of plates between the posts with their edges inserted into grooves formed between a pair of flanges of the H-shaped steel posts, and fasteners for fixing the sound-insulating plates to the posts, characterized in that the method prevents climbing plants from entering gaps that are generated when the edges of the sound-insulating plates are inserted into the grooves of the H-shaped steel posts that form the sound-insulating wall and the plates are stacked in order to install and fix them, and the method comprises the steps of: sealing the gaps with a joint material to prevent climbing plants from entering the gaps and to prevent the gaps from becoming starting points for vines climbing up the posts as they grow.

2. A method for preventing climbing plants as described in claim 1, characterized in that a chemical control means such as a plant repellent such as a herbicide is applied to the joint material.

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