JP2012177240A - Weed-proof structure and construction method for weed-proof structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weed-proof structure capable of regulating the weed growth from between ground-leveling material components composing a ground-leveling material; and a construction method for the weed-proof structure.SOLUTION: In a weed-proof structure, a ground-leveling material 1, constituted by aligning a plurality of ground-leveling material components 3, is laid on the surface of a soil G, and the overgrowth of weed from a boundary between adjoining ground-leveling material components 3 is regulated. The weed-proof structure is provided with a closing member 2 which is included between adjoining ground-leveling material components in a state of being buried in the ground-leveling material components 3 and which closes all or a part of the space between adjoining ground-leveling material components.

Description

  The present invention relates to a weedproof structure provided on a leveling material installed on a soil surface and a construction method of the weedproof structure.

  For example, in order to save time and cost for weeding work, cast concrete as a leveling material is installed on the tower site. Since concrete expands and contracts repeatedly due to changes in temperature, if it is continuous, it will not withstand this expansion and contraction and will crack. Therefore, the concrete is divided into a plurality of sections to be discontinuous, and a cushioning material called a joint material is interposed at the boundary between adjacent concretes (Patent Document 1). Thereby, even if expansion and contraction occurs in the concrete, since the buffer material can cope with the expansion and contraction, it is possible to prevent cracking of the concrete.

JP 2010-133113 A

  When concrete expands or contracts repeatedly, a gap may be formed between the concrete and the cushioning material. When seeds such as grass enter the soil through this gap, the grass grows from the gap and extends to the surface of the leveling material. If the grass grows in this way, it is not preferable in appearance, so that weeding work is necessary, and labor and work costs are required.

  Then, this invention provides the construction method of the weed prevention structure which can regulate the growth of the grass from between the leveling material structure bodies which comprise a leveling material in view of the said situation.

  In the weed control structure of the present invention, a leveling material constituted by arranging a plurality of leveling material components on the soil surface is laid, and the grass prevention structure regulates the grass growth from the boundary of the adjacent leveling material components. It is a grass structure, and is provided with a blocking member that is embedded in the leveling material component and is interposed between adjacent leveling material components and blocks all or part of the adjacent leveling material components. is there.

  According to the weedproof structure of the present invention, since the blocking member is provided, it is generated between adjacent leveling material components due to expansion or contraction of the leveling material structure (for example, a buffer material made of a concrete block or joint material). All or part of the gap to be attempted can be closed. That is, it is possible to prevent the gap from being generated by the closing member, or to block a part of the gap even if the gap is generated. Thereby, it can interrupt | block that the seed of a grass reaches | attains from between the leveling material structure to soil.

  The closing member includes a base portion that closes a lower opening portion of a gap formed between adjacent ground leveling material structures by expansion or contraction of the leveling material structure, and the leveling material structure is erected from the base portion. And a support portion to be provided. Thereby, the base part can coat | cover the boundary of the adjacent leveling material structure, and the soil of the vicinity.

  The support portion has a fitting groove having an upper opening shape, and the leveling material constituting body can be fitted into the fitting groove. Thereby, the leveling material component can be fixed to the closing member by a simple method.

  The said closure member can be made into the substantially L shape which has the vertical part arrange | positioned along the boundary of adjacent leveling material structure, and the horizontal part extended substantially horizontally from this vertical part. As a result, even if a gap is generated between adjacent leveling material components due to expansion or contraction of the leveling material component, the end surfaces of the adjacent leveling material components can be fixed to prevent the generation of a gap. can do.

  The closing member can be made of a steel plate. Since the steel plate is excellent in bending strength and durability, the blocking member can minimize deformation and maintain its shape even with long-time pressure from the leveling material structure. .

  The construction method of the weedproof structure of the present invention is a construction method of a weedproof structure having a plurality of concrete parts and a cushioning material standing on the boundary between adjacent concrete parts on the soil surface. The soil surface is exposed by removing a part of the existing leveling material provided with the concrete material, and the non-removed part is made into a plurality of first concrete parts, and the vertical part and the horizontal part approximately horizontally The vertical portion of the substantially L-shaped opening member having the extending horizontal portion is attached along the end surface of the first concrete portion, and the horizontal portion is formed in a space formed between the adjacent first concrete portions. And a blocking member having a base portion and a support portion for standing a buffer material from the base portion is placed on the soil surface exposed in the space, and the buffer portion is buffered on the support portion. Standing up the material, concrete material in the space It poured in and forms a second concrete section.

  According to the construction method of the weedproof structure of the present invention, the existing leveling material can be modified to prevent the occurrence of a gap between the first concrete portion and the second concrete portion, and the second concrete portion and the buffer It can be set as the weed prevention structure which block | closes the downward opening part of the clearance gap produced between materials. Thereby, constructing a grass prevention structure capable of blocking grass seeds from reaching the soil through the boundary between the first concrete portion and the second concrete portion and the boundary between the second concrete portion and the buffer material. Can do.

  According to the grass-proof structure and the construction method of the grass-proof structure of the present invention, it is possible to block the seeds from reaching the soil, and therefore, it is possible to regulate the growth of grass from the boundary between the adjacent leveling material components. Therefore, weeding work is unnecessary or the frequency can be reduced.

  Assuming that the blocking member has a base part and a support part, it is possible to prevent seeds from entering by simply placing the base part on the soil surface during construction. Since it can support, workability can be improved.

  When the leveling material constituting body is fitted in the fitting groove of the support portion, the leveling material constituting body can be fixed to the closing member by a simple method, and workability at the time of construction is improved.

  When the blocking member is substantially L-shaped having a vertical part and a horizontal part, it is possible to suppress the occurrence of gaps between the leveling material constituents, and thus further block the arrival of seeds to the soil. It is possible to effectively regulate the growth of grass from the boundary between the adjacent leveling material constituting bodies.

  When the blocking member is formed of a steel plate, the shape can be maintained over a long period of time, even for long-term pressure from the leveling material structure, and thus grass growth from the gap can be regulated over a long period of time. .

It is sectional drawing of the weed prevention structure which shows 1st Embodiment of this invention. It is sectional drawing of the obstruction | occlusion member used for the grass protection structure of the said FIG. It is a perspective view of the obstruction | occlusion member used for the grass prevention structure of the said FIG. It is a top view of the steel tower site where the grass prevention structure of the said FIG. 1 is constructed. It is a perspective view of the 1st block body which comprises the obstruction | occlusion member used for the grass protection structure of the said FIG. It is a perspective view of the 2nd block body which comprises the obstruction | occlusion member used for the grass protection structure of the said FIG. It is a perspective view of the 3rd block body which comprises the obstruction | occlusion member used for the grass protection structure of the said FIG. It is sectional drawing of the obstruction | occlusion member laid in the steel tower site shown in the said FIG. 4, (a) is sectional drawing of AA direction, (b) is sectional drawing of BB direction. It is a perspective view which shows the construction middle state of the weed prevention structure of the said FIG. It is sectional drawing of the weed prevention structure which shows 2nd Embodiment of this invention. It is a perspective view of the closure member used for the grass protection structure of the said FIG. It is process drawing explaining the construction method of the weed prevention structure of this invention. It is sectional drawing which shows the modification of the weed prevention structure of 2nd Embodiment of this invention. It is sectional drawing which shows the other modification of the weed prevention structure of 2nd Embodiment of this invention.

  Hereinafter, the best mode for carrying out the present invention will be described.

  The weedproof structure of the present invention is for omitting the labor and cost of weeding work on a steel tower site, for example. That is, as shown in FIG. 1, in the state in which the leveling material 1 configured by aligning a plurality of leveling material structures 3 is laid on the soil G surface, the weedproof structure has an adjacent leveling material structure. It regulates the overgrowth of grass from the boundary of 3. The weedproof structure of the first embodiment of the present invention includes a leveling material structure 3 (3a, 3b) and a metal closing member 2.

  In this embodiment, the leveling material structure 3 is a concrete portion 3a placed on the soil G surface, and a buffer material 3b serving as a joint material interposed between the end surfaces of the concrete portion 3a. Thereby, the leveling material 1 is comprised by the concrete part 3a laid intermittently and the buffer material 3b arrange | positioned by the boundary of the concrete part 3a adjacent to each other.

  The buffer material 3b is a plate-like elastite interposed between the end faces of the concrete portion 3a. Elastite is formed into a plate shape using asphalt compound, fibers, mineral powder, cork and the like. The buffer material 3b is embedded in the concrete portion 3a as shown in FIG. 1 in a state of being fitted in a fitting groove 4 of the closing member 2 described later. It is embedded so as to have a cross shape (see FIG. 4). The concrete part 3a may repeat expansion and contraction due to changes in temperature. In this case, the buffer material 3b can relieve stress due to the expansion of the concrete portion 3a and prevent destruction. Moreover, although the buffer material 3b can prevent the clearance gap between the concrete part 3a becoming large at the time of shrinkage | contraction, a clearance gap may arise slightly between the concrete part 3a and the buffer material 3b. As a result, grass seeds may enter the soil G through this gap.

  As shown in FIGS. 2 and 3, the closing member 2 includes a base portion 5 made of a single steel plate and a support portion 6 made of a pair of steel plates. The base portion 5 is placed on the soil G surface so as to straddle the adjacent concrete portion 3 a, and the soil G surface is covered with the base portion 5. As shown in FIG. 3, a support portion 6 is formed by spot welding a plurality of locations 7 in a state where a pair of steel plates are erected from the base portion 5. The support portion 6 has a fitting groove 4 having an upper opening shape, and the groove width of the fitting groove 4 is substantially the same as the thickness dimension of the cushioning material 3b. Thereby, if the buffer material 3b is fitted to the fitting groove 4, the buffer material 3b can be supported by the support part 6 in the construction, and the buffer material 3b is the base part 5 (soil G). It can be set as the state extended to the perpendicular direction. The groove width of the fitting groove 4 can be set according to the thickness dimension of the cushioning material 3b, and the groove depth of the fitting groove 4 is determined during construction according to the vertical dimension of the cushioning material 3b. It can be set to be able to support the buffer material 3b. In the present embodiment, the support portion 6 extends so as to support the cushioning material 3b in a cross shape within the site W as shown in FIG.

  The blocking member 2 is formed by connecting a plurality of block bodies (first block body 8a, second block body 8b, and third block body 8c), as shown in FIGS. 8A is a cross-sectional view in the AA direction in FIG. 4, and FIG. 8B shows a cross-sectional view in the BB direction in FIG. As shown in FIGS. 5 to 7, the first to third block bodies 8 a, 8 b, 8 c are a pair of rectangular horizontal plates 9 a, 9 b, 9 c that constitute the base portion 5 and a support portion 6. The standing pieces 10a, 10b, and 10c are provided. In the first to third block bodies 8a, 8b, and 8c, the standing pieces 10a, 10b, and 10c extend along a pair of sides of the horizontal plates 9a, 9b, and 9c (in the present embodiment, along the longitudinal direction). (Side) is arranged in parallel. And as shown in FIG. 5, the standing piece 10a is a dimension shorter than the width dimension of the horizontal direction of the horizontal board 9a in the 1st block body 8a. As shown in FIG. 6, the standing piece 10 b has one end protruding from one side extending in a direction orthogonal to the standing piece 10 b in the second block body 8 b and the other end is standing. It is located on the inner side of the other side extending in the direction orthogonal to 10b. As shown in FIG. 7, the standing piece 10 c is longer in the third block body 8 c than the width in the longitudinal direction of the horizontal plate 9 c.

  As shown in FIG. 8A, the first block body 8a, the second block body 8b, and the standing piece 10b of the second block body 8b cover the horizontal plate 9a of the first block body 8a. Connect together. Similarly, the second block bodies 8b are joined together (four in FIG. 8A), and the second block bodies 8b and the third block bodies 8c are joined together. Accordingly, the standing pieces 10a, 10b, and 10c of the respective block bodies 8a, 8b, and 8c are continuous, and the horizontal plates 9a, 9b, and 9c are continuous to form the closing member 2 in the AA direction. Further, as shown in FIG. 8 (b), the blocking member 2 in the BB direction in FIG. 4 has first block bodies 8a to 8b so that a gap is formed at the intersection with the blocking member 2 in the AA direction. The third block body 8c is combined.

  When the blocking member 2 is placed on the soil G surface, the base portion 5 covers the boundary between the buffer material 3b and the concrete portion 3a and the soil G in the vicinity thereof. That is, since the lower opening of the gap formed between the concrete portion 3a and the cushioning material 3b can be closed, even if grass seeds enter through the gap, the seeds are blocked from reaching the soil. be able to.

  The construction method of the weed prevention structure of 1st Embodiment of this invention is demonstrated. As shown in FIG. 9, first, for example, a wooden formwork is set on the soil G surface of the steel tower site W to perform division. And the obstruction | occlusion member 2 is installed in the soil G surface so that the support part 6 may be extended in cross shape by planar view as shown in FIG. The buffer material 3b is erected by fitting the buffer material 3b into the fitting groove 4 of the support portion 6. And after pouring concrete into the steel tower site W, an unnecessary formwork is removed. Thereby, the weed prevention structure of 1st Embodiment of this invention can be constructed.

  Thus, in this invention, since seeds can be blocked from reaching the soil G, grass growth can be controlled from the boundary between the concrete portion 3a and the buffer material 3b, and weeding Work is unnecessary or the frequency can be reduced.

  Since the closing member 2 includes the base part 5 and the support part 6, it is possible to prevent seeds from entering by simply placing the base part 5 on the soil G surface during construction. Since the buffer material 3b can be supported by 6, workability can be improved. Further, since the cushioning material 3b is fitted in the fitting groove 4 of the support portion 6, the cushioning material 3b can be fixed to the closing member 2 by a simple method, and workability during construction is improved. To do.

  Since the blocking member 2 is made of a steel plate, the shape can be maintained over a long period of time even against long-term pressure from the concrete part 3a, and thus the growth of grass from the gap is regulated over a long period of time. be able to.

  FIG. 10 shows a weedproof structure according to the second embodiment. In FIG. 10, the grass protection structure according to the first embodiment is provided, and the grass protection structures according to the second embodiment are provided on both sides thereof. The weedproof structure according to the second embodiment includes a leveling material structure 23 and a metal closing member 22.

  The leveling material constituting body 23 is a first concrete portion 23a and a second concrete portion 23b that are placed on the soil G surface. That is, as shown in FIG. 10, the leveling material 21 with a weedproof structure according to the second embodiment includes a plurality of first concrete portions 23 a that are discontinuously provided on the entire site, and first concrete portions that are adjacent to each other. It is comprised from the 2nd concrete part 23b arrange | positioned at the shock absorbing material 20 side rather than 23a.

  As shown in FIG. 11, the closing member 22 has a substantially L shape having a vertical portion 24 and a horizontal portion 25 extending from the end portion of the vertical portion 24 at a substantially right angle. The vertical portion 24 is provided with a plurality of (three in the illustrated example) hole portions 27 at a predetermined pitch, and the shaft portion of the fixed nail 26 including the shaft portion and the flange is inserted into the hole portion 27. . The vertical portion 24 is disposed along the boundary between the first concrete portion 23a and the second concrete portion 23b, and the shaft portion of the fixed nail 26 extends substantially horizontally in the first concrete portion 23a. It is embedded in the concrete part 23a. Moreover, the horizontal part 25 is embed | buried under the 2nd concrete part 23b in the state extended substantially horizontally in the 2nd concrete part 23b.

  Thus, when the substantially L-shaped blocking member 22 is attached, even if a gap is generated between adjacent concrete parts due to expansion or contraction of the first concrete part 23a and / or the second concrete part 23b, they are adjacent to each other. The end surfaces of the concrete part can be fixed, and the generation of gaps can be suppressed. Thereby, it is possible to block grass seeds from entering the boundary between the first concrete part 23a and the second concrete part 23b, and to block the seeds from reaching the soil G.

  Next, with reference to FIG. 12, a method for remodeling an existing leveling material and constructing the grass prevention structure of the first embodiment and the second embodiment will be described. As shown in FIG. 12A, the existing leveling material 100 is placed in a state where a plurality of concrete portions 101 are divided on the soil G, and the cushioning material 102 is provided at the boundary between the concrete portions 101 adjacent to each other. Is erected.

  First, the buffer material 102 is removed, and the concrete portion 101 around the buffer material 102 is removed to form a plurality of first concrete portions 23a that are discontinuous. Thereby, as shown in FIG.12 (b), the space S is formed between the adjacent 1st concrete parts 23a, In this space S, it is in the state which the soil G exposed.

  As shown in FIG.12 (c), the obstruction | occlusion member 2 which comprises the weed prevention structure of 1st Embodiment is mounted in this soil G surface. Thereby, the base unit 5 covers the soil G corresponding to the space S. Next, the buffer material 20 is erected by fitting the buffer material 20 into the fitting groove 4 of the support portion 6. That is, the buffer material 20 is supported by the support portion 6 and fixed in a state of extending in the vertical direction with respect to the base portion 5 (soil G).

  Moreover, the obstruction | occlusion member 22 which comprises the weed prevention structure of 2nd Embodiment is attached to the 1st concrete part 23a. That is, after the vertical portion 24 is aligned with the end surface of the first concrete portion 23a, the vertical portion 24 is attached to the first concrete portion 23a via the fixing nail 26.

  Thereafter, the space S is filled with concrete to form a second concrete portion 23b as shown in FIG. Thereby, the buffer material 20 and the closing members 2 and 22 are embedded in the second concrete portion 23b. In this way, the leveling material 21 can be composed of the concrete portions 23 that are intermittently placed and the cushioning material 20 that is disposed at the boundary between the adjacent concrete portions 23.

  As described above, the weed control structure according to the second embodiment has the same effect as the weed control structure of the first embodiment. In particular, since the blocking member 22 is substantially L-shaped having the vertical portion 24 and the horizontal portion 25, the generation of gaps between the concrete portions can be suppressed, so that the seed reaches the soil G even more. It is possible to effectively prevent the grass from growing from the boundary between adjacent concrete parts. In addition, in the weed prevention structure shown in FIGS. 10-12, about the structure similar to FIGS. 1-9, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG.13 and FIG.14 shows the modification of the weed prevention structure of the said 2nd Embodiment. In the weed prevention structure of the second embodiment, the leveling material constituting body is a first concrete part and a second concrete part, both of which are concrete parts having a surface substantially parallel to the soil G surface, as shown in FIG. Alternatively, one of the ground leveling material constituting bodies may be a U-shaped groove 40. Furthermore, as shown in FIG. 14, one of the leveling material components may be a so-called shore block 41 used as a partition for agricultural land such as paddy fields.

  While the embodiments and examples of the present invention have been described above, the present invention is not limited to these and various modifications can be made. For example, as the leveling material constituting body, various materials can be adopted as long as they constitute a leveling material such as a concrete block, a tile block, and cast concrete, and the shape can also be various. The blocking member is preferably a steel plate in view of strength, cost, etc., but may be other metals.

1, 21, 100 Leveling material 2, 22 Blocking member 3a, 23a, 23b Concrete portion 3b, 20 Buffer material 4 Fitting groove 5 Base portion 6 Support portion 24 Vertical portion 25 Horizontal portion G Soil

Claims (6)

On the soil surface, a leveling material constructed by aligning a plurality of leveling material components is laid, and a grass prevention structure that regulates the overgrowth of grass from the boundary of the adjacent leveling material components,
A weedproof structure comprising a blocking member interposed between adjacent leveling material components in a state of being embedded in the leveling material material and closing all or part of the adjacent leveling material components . The closing member is a base portion that closes a lower opening of a gap formed between adjacent leveling material constituents by expansion or contraction of the leveling material constituents, and
A weedproof structure comprising: a support portion for erecting the leveling material structure from the base portion.   The grassproof structure according to claim 1 or 2, wherein the support portion has a fitting groove having an upper opening shape, and the leveling material constituting body is fitted into the fitting groove.   The said blocking member was made into the substantially L shape which has the vertical part arrange | positioned along the boundary of adjacent leveling material structure, and the horizontal part extended substantially horizontally from this vertical part. 1 herbicidal structure.   The weedproof structure according to any one of claims 1 to 4, wherein the closing member is made of a steel plate. On the soil surface, a construction method of a weedproof structure having a plurality of concrete parts and a cushioning material standing on the boundary between adjacent concrete parts,
A part of the existing leveling material installed on the soil surface is removed to expose the soil surface, and the non-removed part is a plurality of first concrete parts,
The first concrete part adjacent to each other by attaching the vertical part along the end surface of the first concrete part of the substantially L-shaped closing member having a vertical part and a horizontal part extending substantially horizontally from the vertical part. And projecting the horizontal portion into the space formed between,
On the soil surface exposed in the space, a blocking member including a base part and a support part for standing a cushioning material from the base part is placed,
A cushioning material is erected on the support part,
A construction method for a weedproof structure, wherein a concrete material is poured into the space to form a second concrete portion.

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