JP2009268421A - Greened pavement and method for constructing the same - Google Patents

Greened pavement and method for constructing the same Download PDF

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JP2009268421A
JP2009268421A JP2008122992A JP2008122992A JP2009268421A JP 2009268421 A JP2009268421 A JP 2009268421A JP 2008122992 A JP2008122992 A JP 2008122992A JP 2008122992 A JP2008122992 A JP 2008122992A JP 2009268421 A JP2009268421 A JP 2009268421A
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roadbed
pavement
base material
upper side
plant
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Masahiro Nagafune
将宏 長船
Koji Masaki
功士 正木
Yasuyoshi Fujishima
泰良 藤嶋
Masaru Amada
賢 雨田
Takeshi Nakamura
中村  剛
Yuko Adachi
優子 足達
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Nisshoku Corp
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Nisshoku Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a greened pavement being a technique regarding a greened pavement in an area such as a driving path or a parking place which vehicles enter, increasing the ratio of green area while maintaining load-resistant capacity, allowing plants to soundly grow and keeping the plants in sound conditions for a long period of time, and to provide a method for constructing the greened pavement. <P>SOLUTION: The greened pavement includes the following structure: a tread pressure-preventive material is laid on the upper side of a water-holding road base formed by agitating and mixing road base material and water-holding material containing anion adsorbing carbon material, and evenly laying the mixture on the upper side of a road bed and roll-pressing the mixture; vegetation base material including a plant growth-promoting agent containing microorganisms belonging to Staphylococcus or Brevibacterium, and/or the anion adsorptive carbon material is filled in a space protected by the tread pressure-preventive material; and plants are arranged on the upper side of the vegetation base material. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、車両が進入する走行路や駐車場等のエリアにおける緑化舗装の技術に関する。   The present invention relates to a technique for greening pavement in an area such as a traveling road or a parking lot where a vehicle enters.

車両用舗装などアスファルトやコンクリートを使用していた従来の高強度舗装に代替するものとして、舗装部分において芝等の植物の繁茂を積極的に図ることができる緑化舗装があり、斯かる緑化舗装を施した緑化走行路や緑化駐車場等では、その舗装部分における車両の走行・停止に支障を来さないようにしつつ、舗装部分で生育を図る植物が車両に踏まれて枯死するのを防ぐ必要がある。そのため、斯かる舗装緑化を行うに当たっては、その舗装部分に、植物が生育可能な軟らかい地盤と、車両等の荷重に耐えられる強固な地盤を併せ持たせることが肝要であり、この矛盾する条件を同時に解決しなければならない。   As an alternative to conventional high-strength pavement that used asphalt and concrete such as pavement for vehicles, there is a greening pavement that can actively grow vegetation such as turf in the pavement part. It is necessary to prevent plants that grow on the pavement from being stepped on and killed in the greening roads and parking lots that have been applied, while preventing the vehicle from running or stopping on the pavement. There is. For this reason, when pavement greening is performed, it is important that the pavement has a soft ground where plants can grow and a strong ground that can withstand the load of vehicles, etc. It must be resolved at the same time.

そこで、従来の緑化舗装として、特許文献1に記載されているように、強度の高いブロックを踏圧防止材として用いる緑化舗装がある。これは、路盤の上に植生基盤とブロックを配置し、このブロックが車両の荷重を受け止める事で、植物を踏圧から保護するものである。   Therefore, as a conventional greening pavement, as described in Patent Document 1, there is a greening pavement using a high-strength block as a tread pressure prevention material. This is to protect the plant from treading by placing a vegetation base and a block on the roadbed and receiving the vehicle load.

特開平7−150505号公報JP-A-7-150505

しかし、上記特許文献1の緑化舗装では、踏圧防止材の占める面積が大きくなる分、緑化面積が小さくなってしまうという問題があった。   However, the greening pavement of Patent Document 1 has a problem that the greening area is reduced by the increase in the area occupied by the tread pressure prevention material.

更には、砕石路盤の上に薄層の植生基盤が造成されるだけであるため、養分が流亡したり水分が不足するなど植物に多大なストレスがかかり、乾燥障害や生育障害を引き起こす恐れがあった。   In addition, since a thin layer of vegetation base is created on the crushed stone roadbed, there is a risk of drought damage and growth damage due to great stress on the plant such as loss of nutrients and lack of water. It was.

本発明は、上記の問題点を踏まえて成されたものであって、耐荷重性能を維持しながらも緑化面積比率を上昇させ、更には植物を健全に生育し、長期間その状態を維持させることのできる緑化舗装とその施工方法を提供することを目的とする。   The present invention was made in view of the above problems, and increased the ratio of the greening area while maintaining the load bearing performance, and further allowed the plant to grow healthy and maintain its state for a long period of time. The purpose is to provide a greening pavement and its construction method.

上記の課題を解決するために、本発明が講じた技術的手段は、次の通りである。即ち、請求項1に係る発明の緑化舗装は、路盤材と陰イオン吸着炭素材料を含む保水材を攪拌混合し、これを路床の上側へ敷き均した後に転圧することで形成された保水性路盤の上側に踏圧防止材が敷設され、前記踏圧防止材によって保護される空間には、スタフィロコッカス属またはブレビバクテリウム属に属する微生物を含む植物生長促進剤および/または陰イオン吸着炭素材料を含んだ植生基盤材が充填されてなり、更に前記植生基盤材の上側に植物を備えることを特徴とする。   In order to solve the above-mentioned problems, technical measures taken by the present invention are as follows. That is, the greening pavement of the invention according to claim 1 is formed by stirring and mixing a roadbed material and a water-retaining material containing an anion-adsorbing carbon material, laying it on the upper side of the roadbed, and rolling and then rolling it. In the space protected by the pedaling pressure preventive material on the upper side of the roadbed, a plant growth promoter and / or anion adsorbing carbon material containing microorganisms belonging to the genus Staphylococcus or Brevibacterium is placed. The vegetation base material is filled, and a plant is further provided on the upper side of the vegetation base material.

請求項2に係る発明の緑化舗装の施工方法は、路盤材と陰イオン吸着炭素材料を含む保水材を攪拌混合し、これを路床の上側へ敷き均した後に転圧することで保水性路盤を形成する工程と、前記保水性路盤の上側に踏圧防止材を敷設すると共に、前記踏圧防止材によって保護される空間にスタフィロコッカス属またはブレビバクテリウム属に属する微生物を含む植物生長促進剤および/または陰イオン吸着炭素材料を含んだ植生基盤材を充填して植物育成層を形成する工程と、前記植物育成層の上側に植物を配置する工程とからなる事を特徴としている。   The construction method of the greening pavement of the invention which concerns on Claim 2 stirs and mixes the roadbed material and the water-retaining material containing the anion adsorption carbon material, spreads it on the upper side of the roadbed, and then rolls the water-retaining roadbed. A step of forming, and a plant growth promoter containing a microorganism belonging to the genus Staphylococcus or Brevibacterium in a space protected by the tread pressure preventive material and laying a tread pressure preventive material on the upper side of the water retaining roadbed and / or Alternatively, the method is characterized by comprising a step of forming a plant growth layer by filling a vegetation base material containing an anion adsorbing carbon material and a step of arranging a plant above the plant growth layer.

請求項1〜2に係る発明により、耐荷重性能を維持しながらも緑化面積比率を上昇させ、更には植物を健全に生育し、長期間その状態を維持させることのできる緑化舗装とその施工方法が得られる。   By the invention which concerns on Claims 1-2, the greening pavement which can raise a greening area ratio, maintain a load-bearing performance, and also grow a plant healthy, and can maintain the state for a long period of time, and its construction method Is obtained.

すなわち、請求項1に係る発明では、踏圧防止材の頂部に掛かる荷重(主に鉛直下向きの荷重)は、踏圧防止材の下側表面積の広さに分散された上で保水性路盤に伝達される。従って、保水性路盤の単位面積当たりに掛かる力が非常に小さくなるので、より大きな荷重に耐えることができる緑化舗装が得られる。   That is, in the invention according to claim 1, the load (mainly vertical downward load) applied to the top of the tread pressure preventing material is transmitted to the water retention roadbed after being distributed over the area of the lower surface area of the tread pressure preventing material. The Therefore, since the force applied per unit area of the water retaining roadbed is very small, a greening pavement capable of withstanding a larger load can be obtained.

さらに、前記踏圧防止材の上面から保水性路盤までの間に車両等の荷重が掛からない空間を創出可能であり、この空間内に緑化部分(植生基盤材や、植生基盤材から生育する植物)を配置すれば、緑化部分を車両による踏圧等から保護することができ、植物の生長を良好かつ確実に図ることができる。   Furthermore, it is possible to create a space where no load is applied between the upper surface of the tread pressure prevention material and the water retaining roadbed, and a greening part (vegetation base material or plants that grow from the vegetation base material) in this space. If it arrange | positions, a greening part can be protected from the treading pressure etc. by a vehicle, and the growth of a plant can be aimed at favorably and reliably.

その上、前記植物は植物基盤材の層のみならずその下方の保水性路盤の層にまで根を伸ばすことができるので、それだけ強く植物を根づかせることができ、長期間にわたる安定した緑化の実現が可能となる。   In addition, the plant can extend its roots not only to the layer of plant base material but also to the layer of water retaining roadbed below it, so that it can firmly root the plant and realize stable greening over a long period of time. Is possible.

また、略剣山状の突起付き踏圧防止材を用いる場合、従来は植物の乾燥障害を回避するために十分な量の植物育成層を設けることが必要であり、そのために踏圧防止材の突起を高くしなければならず、それによって踏圧防止材の耐荷重強度が低くなってしまう恐れがあったが、本発明では路盤においても植物が生育可能としているため、従来の踏圧防止材よりも突起高さを低く設定してその耐荷重強度を高めることができる。   In addition, when using an approximately sword mountain-shaped protrusion pressure-preventing material, conventionally, it has been necessary to provide a sufficient amount of a plant-growing layer in order to avoid drought damage to the plant. As a result, the load bearing strength of the stepping pressure preventive material may be reduced. However, in the present invention, since the plant can grow on the roadbed, the protrusion height is higher than that of the conventional stepping pressure preventing material. Can be set low to increase the load bearing strength.

一方、請求項2に係る発明では、上述した効果を確実に発揮させる緑化舗装を簡易に施工できる。   On the other hand, in the invention which concerns on Claim 2, the greening pavement which exhibits the effect mentioned above reliably can be constructed easily.

以下、本発明の実施の形態について図面を参照しながら説明する。ここで、図1は本発明の一実施の形態に係る緑化舗装とその施工方法の構成を概略的に示す断面図、図2は緑化舗装上を車両が通行する際の状況を概略的に示す説明図である。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Here, FIG. 1 is a sectional view schematically showing a configuration of a greening pavement and a construction method thereof according to an embodiment of the present invention, and FIG. 2 schematically shows a situation when a vehicle passes on the greening pavement. It is explanatory drawing.

本実施形態における緑化舗装は、図1に示すように、施工対象域の地面(路床)1の上側に形成した保水性路盤2と、この保水性路盤2上に形成される不陸修正層5と、この不陸修正層5の上に敷設される略剣山状の突起付き踏圧防止材6と、踏圧防止材6によって保護される空間に充填される植生基盤材7とを備えている。   As shown in FIG. 1, the greening pavement in the present embodiment includes a water retention roadbed 2 formed on the upper side of the ground (roadbed) 1 in the construction target area, and a non-land correction layer formed on the water retention roadbed 2. 5, a substantially sword-shaped projecting tread pressure-preventing material 6 laid on the unevenness correcting layer 5, and a vegetation base material 7 filled in a space protected by the tread-pressure preventing material 6.

以下、前記緑化舗装の詳細な構成の説明も兼ねて、本実施の形態に係る緑化舗装の施工方法について述べる。当該緑化舗装の施工方法は、以下の工程(1)〜(5)よりなる。   Hereinafter, the construction method of the greening pavement according to the present embodiment will be described together with description of the detailed configuration of the greening pavement. The construction method of the greening pavement includes the following steps (1) to (5).

(1)先ず、前記保水性路盤2を形成するに当たり、例えば施工対象域の地表を掘り下げて(あるいは施工対象域の周囲に壁を形成して)、緑化舗装形成用のスペースを設け、路床1の整形・転圧を行う。   (1) First, in forming the water retaining roadbed 2, for example, the ground surface of the construction target area is dug down (or a wall is formed around the construction target area) to provide a space for greening pavement formation, Perform 1 shaping and rolling.

(2)次いで、路盤材3(本実施形態では砕石)と保水材4を攪拌混合し、この攪拌したものを路床1に所定厚さ(例えば、10〜30cm程度)に敷設して、ロードローラー、タイヤローラー、振動締固め機等の転圧機械で転圧する。   (2) Next, the roadbed material 3 (crushed stone in the present embodiment) and the water retaining material 4 are stirred and mixed, and the stirred material is laid on the roadbed 1 to a predetermined thickness (for example, about 10 to 30 cm), and loaded. Roll with a rolling machine such as a roller, tire roller, or vibration compactor.

前記路盤材3は、10〜100mm(好ましくは30〜50mm)の粒径を有する硬質粒体であり、例えば砕石や砂利(バラスト)の他、一定の強度(施工後の路盤2の状態を保つことができる強度)を有するものであれば、スラグ等の鉱滓を用いることもできる。   The roadbed material 3 is a hard granule having a particle size of 10 to 100 mm (preferably 30 to 50 mm). For example, in addition to crushed stone and gravel (ballast), the roadbed material 3 maintains a certain strength (the state of the roadbed 2 after construction). It is also possible to use slag or other iron ore as long as it has strength.

前記保水材4としては、ピートモス、バーク堆肥、肥沃土、パーライト、バーミキュライト、ベントナイトや、これらの混合物を用いることができる。尚、保水材4には、土壌改良材や肥料、植物生長促進剤などを含有させてもよく、特に陰イオン吸着炭素材料を含有させると、水分と共に流亡しようとする硝酸イオンなどの肥料分を吸着し植物の生長に利用する事が出来るため好適である。   As the water retaining material 4, peat moss, bark compost, fertile soil, perlite, vermiculite, bentonite, or a mixture thereof can be used. In addition, the water retaining material 4 may contain a soil improvement material, a fertilizer, a plant growth promoter, and the like. In particular, when an anion adsorbing carbon material is contained, a fertilizer such as nitrate ion that is going to run away with moisture is contained. It is suitable because it can be adsorbed and used for plant growth.

この転圧工程であるが、表面をなるべく水平にした保水性路盤2を形成させるために、散水を行いながら転圧する事が好適である。また、この散水によって保水材4の流動性が向上し、保水材4がより一層路盤材3間の空隙隅々にまで充填されることにもなる。尚、必要に応じて、その上へ細砂を投入して敷き均し、表面をより確実に水平にするための不陸修正層5を形成させてもよい。   Although it is this rolling process, in order to form the water-retaining roadbed 2 with the surface as horizontal as possible, it is preferable to perform rolling while watering. Moreover, the fluidity of the water retaining material 4 is improved by this watering, and the water retaining material 4 is further filled into the gaps between the roadbed materials 3. In addition, if necessary, fine sand may be thrown over and spread, and the unevenness correction layer 5 may be formed to make the surface more level.

(3)しかる後、前記保水性路盤2の上に前記略剣山状の突起付き踏圧防止材6を敷設する。図2に示すように、この踏圧防止材6は樹脂からなり、上向きに延び均一な高さで先端が平坦な突起と、植物の根茎が挿通可能な穴とを多数備え、隣接する前記突起同士の間隔はタイヤ9幅に比べて十分小さく、緑化舗装を施したエリアを通過する車両のタイヤ9の接地は必ず各突起の上端部においてなされるようにし、植物の生長点にタイヤ9が届かないように突起を十分長くしたものである。その大きさは50cm四方の略正方形であって、隣り合う踏圧防止材6同士を繋ぎ合わせる為の連結部が各辺に形成されている。尚、素材はこれに限定されるものではなく、一定の強度があり、変形や腐食をしない材質(鋼鉄などの金属等)が選択可能である。   (3) After that, the substantially sword mountain-like stepped pressure-preventing material 6 is laid on the water-retaining roadbed 2. As shown in FIG. 2, the tread pressure prevention material 6 is made of resin, and includes a plurality of protrusions extending upward and having a uniform height and a flat tip, and holes through which the roots of plants can be inserted. Is sufficiently small compared to the width of the tire 9, and the tire 9 of the vehicle passing through the green pavement area is always grounded at the upper end of each protrusion, so that the tire 9 does not reach the plant growth point. In this way, the protrusion is sufficiently long. The size is a substantially square of 50 cm square, and a connecting portion for connecting adjacent tread pressure preventing materials 6 is formed on each side. In addition, a raw material is not limited to this, The material (metal, such as steel) which has fixed intensity | strength and does not deform | transform or corrode can be selected.

(4)その後、前記踏圧防止材6の上から植生基盤材7を客土すると共に敷き均し、踏圧防止材によって保護される空間に植生基盤材7を充填して植物育成層を形成する。充填する植生基盤材7の高さは、本実施例では後述するように芝生マット敷設と転圧工程を行うため前記踏圧防止材6の突起の高さと略同程度に充填しているが、これより低くする事も可能である。   (4) After that, the vegetation base material 7 is overlaid and leveled from above the tread pressure prevention material 6, and the plant growth layer is formed by filling the space protected by the tread pressure prevention material with the vegetation base material 7. In this embodiment, the height of the vegetation base material 7 to be filled is approximately the same as the height of the protrusion of the tread pressure preventing material 6 in order to perform the lawn mat laying and rolling process as described later. It is possible to make it lower.

(5)最後に、植物育成層の上に植生マット8(本実施形態ではマット状の生芝)を敷設し、踏圧防止材6の突起頂部を植生マット8の上へ突き抜けさせるように振動ローラーなどを用いて転圧する。   (5) Finally, a vegetation mat 8 (mat-like raw turf in this embodiment) is laid on the plant growing layer, and the vibration roller so that the projection top of the tread pressure prevention material 6 penetrates onto the vegetation mat 8. Compress it using a method such as

このように踏圧防止材6の突起頂部を植物の上へ突き抜けさせることによって、踏圧防止材6の表面よりも下側へ植物の生長点を配置する事ができ、この工程によって確実に植物を保護する事が可能となるのである。   Thus, the plant growth point can be disposed below the surface of the tread pressure preventing material 6 by projecting the top of the protrusion of the tread pressure preventing material 6 onto the plant, and the plant is reliably protected by this process. It is possible to do.

更に、この転圧によって植物を植生基盤材7へ確実に密着させることができ、植物の浮き上がり(密着していない状態)による乾燥障害を防ぐ事にも繋がる。   Furthermore, this rolling pressure can surely bring the plant into close contact with the vegetation base material 7, which leads to prevention of drying troubles due to the floating of the plant (in a state where it is not in close contact).

前記植生基盤材7には、ピートモス、バーク堆肥、良質土、保水材、土壌改良材などを混合したものを用いることができる。また、植生基盤材7に植物種子を含ませることも可能である。   The vegetation base material 7 may be a mixture of peat moss, bark compost, high quality soil, water retention material, soil improvement material, and the like. It is also possible to include plant seeds in the vegetation base material 7.

また、前記植生基盤材7には、スタフィロコッカス属またはブレビバクテリウム属に属する微生物を含む植物生長促進剤と、硝酸イオンを吸着する陰イオン吸着炭素材料のどちらか一方、より好適には両方を添加することが、緑化舗装という乾燥しやすい特殊条件下において植物を健全に生育させるために望ましい。   In addition, the vegetation base material 7 includes either a plant growth promoter containing a microorganism belonging to the genus Staphylococcus or Brevibacterium, and an anion adsorbing carbon material that adsorbs nitrate ions, more preferably both. It is desirable to add a plant to grow plants healthy under special conditions that are easy to dry, such as green pavement.

この植生基盤材7の適切な配合条件を導き出すため、本出願人は以下の試験を行った。   In order to derive an appropriate blending condition of the vegetation base material 7, the applicant conducted the following test.

緑化舗装と同様の条件となるように、ワグネルポット内に、200mm厚の保水性路盤、30mmの不陸修正層、70mmの植生基盤材、根茎付き芝生を下から順に敷き詰めた試験体を準備し、次の植生基盤材の配合(各3体)による効果の差異を比較した。尚、芝生設置後2週間は潅水養生を行い、それ以降は一切の手を加えず自然条件下にて4週間放置した。   Prepare a test specimen in which a 200mm thick water-retaining roadbed, a 30mm flat surface correction layer, a 70mm vegetation base material, and a lawn with rhizomes are laid in order from the bottom in the Wagner pot so that the conditions are the same as for greening pavement. The difference of the effect by the composition (each 3 bodies) of the following vegetation base material was compared. In addition, irrigation curing was performed for 2 weeks after setting the lawn, and after that, it was left for 4 weeks under natural conditions without any modification.

A.良質土
B.良質土+微生物生長促進剤
C.良質土+陰イオン吸着炭素材料
D.良質土+微生物生長促進剤+市販活性炭
E.良質土+微生物生長促進剤+陰イオン吸着炭素材料
A. Good quality soil B. Good soil + microbial growth promoter C.I. Good quality soil + anion adsorption carbon material D. Good quality soil + microbial growth promoter + commercial activated carbon Good quality soil + microbial growth promoter + anion adsorbing carbon material

A.の条件においては、3体の試験体全てにおいて葉の90%以上が枯死した。これは、保水性が十分でなく、乾燥障害を受けたものと推測される。   A. Under these conditions, 90% or more of the leaves died in all three specimens. It is presumed that this was insufficient in water retention and suffered from drying problems.

B.の条件においては緑被率が平均50%程度、C.の条件では緑被率平均70%程度、D.の条件では緑被率平均50%程度となった。この事より、微生物生長促進剤と陰イオン吸着炭素材料には乾燥条件下における植物の生長に対して十分な効果があることが確認できた。また、B.とD.では緑被率に有意差が見られず、本試験では市販活性炭の持つ植物生長効果は確認できなかった。   B. In the above conditions, the green coverage ratio is about 50% on average, C.I. The green coverage ratio is about 70% under the conditions of Under these conditions, the average green coverage was about 50%. From this, it was confirmed that the microbial growth promoter and the anion-adsorbing carbon material had a sufficient effect on the growth of plants under dry conditions. B. And D. No significant difference was observed in the green coverage rate, and the plant growth effect of commercial activated carbon could not be confirmed in this test.

E.の条件においては、緑被率平均が94%と最も生育状況が良好であった。本条件のみが突出して良好な結果となっており、微生物生長促進剤と陰イオン吸着炭素材料それぞれが持つ植物生長効果を単純に加えた以上の効果を得られる事が確認できた。具体的なメカニズムを解明するには至らなかったものの、D.の条件ではこの様な効果が確認できなかった事から、微生物の産出するグリシンベタインと陰イオン交換能の組合せ、若しくは、微生物そのものと陰イオン交換能の組合せによって、何らかの相乗効果が発生しているものと推察される。   E. Under the above conditions, the average green coverage was 94% and the growth was the best. Only this condition was outstanding and it was a good result, and it was confirmed that an effect more than that obtained by simply adding the plant growth effect of each of the microbial growth promoter and the anion-adsorbing carbon material was obtained. Although the specific mechanism was not clarified, D.C. Since such an effect could not be confirmed under the above conditions, some synergistic effect was generated by the combination of glycine betaine and anion exchange capacity produced by the microorganism, or the combination of the microorganism itself and anion exchange capacity. Inferred.

上記工程(1)〜(5)を行う緑化舗装の施工方法及びこれにより形成される緑化舗装では、以下の効果が得られる。すなわち、まず、踏圧防止材6の突起頂部に掛かる荷重(主に鉛直下向きの荷重)は、踏圧防止材6の下側表面積の広さに分散され、さらに隣り合う踏圧防止材6へも伝播して分散されながら保水性路盤2に伝達される。従って、保水性路盤2の単位面積当たりに掛かる力が非常に小さくなるので、大きな荷重に耐えることができる緑化舗装が得られる。   In the construction method of the greening pavement which performs the said process (1)-(5) and the greening pavement formed by this, the following effects are acquired. That is, first, a load (mainly a vertically downward load) applied to the protrusion top portion of the tread pressure preventing material 6 is distributed over the area of the lower surface area of the tread pressure preventing material 6 and further propagates to the adjacent tread pressure preventing material 6. It is transmitted to the water retaining roadbed 2 while being dispersed. Therefore, since the force applied per unit area of the water retaining roadbed 2 becomes very small, a greening pavement capable of withstanding a large load is obtained.

また、保水性路盤2は、従来の路盤とは異なり路盤材3間の空隙に保水材4が充填された状態になっているため、保水材4がクッションの役目を果たし、路盤材3同士が擦りあわされて磨耗したり、目減りして保水性路盤2が沈下してしまうようなことが極めて起こりにくくなっている。   Moreover, since the water retention road base 2 is in a state in which the water retention material 4 is filled in the gap between the road base materials 3 unlike the conventional road base, the water retention material 4 serves as a cushion, and the road base materials 3 are connected to each other. It is extremely difficult for the water retaining roadbed 2 to sink due to rubbing and abrasion, or to be reduced.

殊に、上記の構成によれば、植物育成層を形成する植生基盤材7だけでは不足しがちな保水性・保肥性をその下側の保水性路盤2部分においてカバーすることが可能となり、良好な植物生育環境を整えられる。更には、前記植物は植生基盤材7の層のみならずその下方の保水性路盤2の層にまで根を伸ばすことができるので、それだけ強く植物を根づかせることができ、長期間にわたる安定した緑化の実現が可能となる。   In particular, according to the above configuration, it becomes possible to cover the water retention / fertilization property, which is likely to be insufficient only with the vegetation base material 7 forming the plant growth layer, in the lower water retention roadbed 2 portion, Good plant growth environment is prepared. Furthermore, since the plant can extend roots not only to the layer of the vegetation base material 7 but also to the layer of the water-retaining roadbed 2 below it, the plant can be strongly rooted so that it can be stably planted over a long period of time. Can be realized.

また、前記踏圧防止材6と不陸修正層5の間に車両等の荷重が掛からない空間を創出してあり、この空間内に緑化部分(植生基盤材7や、植生基盤材7から生育する植物)を配置してあるので、緑化部分を車両による踏圧等から保護することができ、植物の生長点が傷つくことなく、植物の生長を良好かつ確実に図ることができる。   In addition, a space where a load of a vehicle or the like is not applied is created between the tread pressure prevention material 6 and the unevenness correction layer 5, and a greening portion (vegetation base material 7 or vegetation base material 7 grows in this space). Since the plant) is arranged, the greening portion can be protected from the treading pressure by the vehicle, and the growth of the plant can be favorably and reliably achieved without damaging the plant growth point.

更に、前記植生基盤材には、スタフィロコッカス属またはブレビバクテリウム属に属する微生物を含む植物生長促進剤と、硝酸イオンを吸着する陰イオン吸着炭素材料のどちらか一方が少なくとも含まれているため、グリシンベタインによって植物へ耐ストレス性を付与できたり、硝酸などの養分の流亡を抑えることができるため、緑化舗装という植物の生長に適さない環境においても植物を健全に育成させる事ができる。   Furthermore, the vegetation base material contains at least one of a plant growth promoter containing a microorganism belonging to the genus Staphylococcus or Brevibacterium and an anion adsorbing carbon material that adsorbs nitrate ions. In addition, glycine betaine can impart stress resistance to plants and suppress the loss of nutrients such as nitric acid, so that plants can be cultivated in an environment that is not suitable for plant growth, such as green pavement.

しかも、緑化舗装の表面には踏圧防止材6の頂部のみ目視されるものの、それ以外の全体にわたって緑化を図ることができるので、緑化面積比率も大幅に高まることとなる。   And although only the top part of the tread pressure prevention material 6 is visually recognized on the surface of a greening pavement, since greening can be aimed at over the other whole, a greening area ratio will also increase significantly.

なお、本発明は、本実施形態に限らず、種々に変形して実施することができる。そこで、以下にその変形例について説明する。もちろん、以下に示す各変形例同士を適宜組み合わせることができることはいうまでもない。   The present invention is not limited to this embodiment, and can be implemented with various modifications. Therefore, the modified example will be described below. Of course, it goes without saying that the following modifications can be combined as appropriate.

本実施形態の上記工程(1)では、路床1の上に直接路盤材3を積層しているが、路床1と路盤材3との間に別の部材を設けてあってもよい。   In the step (1) of the present embodiment, the roadbed material 3 is laminated directly on the roadbed 1, but another member may be provided between the roadbed 1 and the roadbed material 3.

また、本実施形態の上記工程(2)では、路盤材3と保水材4を予め攪拌混合しているが、路盤材3のみを路床1に所定厚さ敷設・転圧したのち、スラリー状または液体状の保水材4を路盤材3間の空隙に充填するようにしてもよい。   Further, in the step (2) of the present embodiment, the roadbed material 3 and the water retaining material 4 are agitated and mixed in advance, but only the roadbed material 3 is laid and rolled on the roadbed 1 to a predetermined thickness, and then in a slurry state. Alternatively, the liquid water retaining material 4 may be filled in the gaps between the roadbed materials 3.

しかしながら、上述の方法では充填の為のポンプ等別途施工機械が必要となると共に、確実に路盤材3間の空隙全てに保水材4を充填することが困難であるため、本実施形態に記載の路盤材2と保水材4を事前に混合させたのちに路床1へ敷設・転圧する方法が最も好適である。   However, the above-described method requires a separate construction machine such as a pump for filling, and it is difficult to reliably fill the water retaining material 4 in all the gaps between the roadbed materials 3. The method of laying and rolling on the roadbed 1 after mixing the roadbed material 2 and the water retaining material 4 in advance is most preferable.

本実施形態の上記工程(3)では、略剣山状の踏圧防止材6を使用しているが、車両などの荷重から植物及び植生基盤材7を保護する事が出来るものであればこれ以外の形状(厚めの格子状マットなど)であってもよい。   In the above step (3) of the present embodiment, the substantially sword-like treading pressure prevention material 6 is used, but other than this can be used as long as it can protect the plant and the vegetation base material 7 from the load of the vehicle or the like. The shape (such as a thick lattice mat) may be used.

保水材4および植生基盤材7には陰イオン吸着炭素材料を含ませる事が好適である旨は上述した通りであるが、保水材4には何も吸着していない状態の陰イオン吸着炭素材料を、植生基盤材7には予め硝酸イオンを吸着させた状態の陰イオン吸着炭素材料を用いる事が望ましい。   As described above, it is preferable that the water retaining material 4 and the vegetation base material 7 contain an anion adsorbing carbon material, but the anion adsorbing carbon material in a state where nothing is adsorbed on the water retaining material 4. For the vegetation base material 7, it is desirable to use an anion adsorbing carbon material in which nitrate ions are adsorbed in advance.

この様な構成とすることで、植生基盤材7に含まれる陰イオン吸着炭素材料は、施工当初から植物に対して肥料分(硝酸)を供給出来るとともに、植物が必要としない過剰な硝酸は植物に利用可能な状態で吸着・保持し続ける事が出来るという理想的な肥料(植物が必要とする量の養分を常に提供可能な肥料)として効果を発揮する。   By adopting such a configuration, the anion adsorbing carbon material contained in the vegetation base material 7 can supply fertilizer (nitric acid) to the plant from the beginning of construction, and excess nitric acid that the plant does not need is plant It is effective as an ideal fertilizer (a fertilizer that can always provide the amount of nutrients needed by plants) that can continue to be adsorbed and retained in a state where it can be used.

そして、保水材4に含まれる陰イオン吸着炭素材料は、事前に何も吸着させていないために吸着能が非常に高くなっており、植生基盤材7から若干量流亡してくる硝酸イオンを確実に保持して水質汚染などを未然に防ぐ事ができる。また、将来的に伸長してくる植物の根茎に対してこの硝酸を肥料分として供給する事ができるため、より強く植物を根づかせて長期間にわたる安定した緑化の実現が可能となる。   The anion adsorbing carbon material contained in the water retaining material 4 has a very high adsorbing capacity because nothing has been adsorbed in advance, and it is possible to ensure that a certain amount of nitrate ions are washed away from the vegetation base material 7. To prevent water pollution. Further, since this nitric acid can be supplied as a fertilizer to the rhizomes of plants that will grow in the future, it will be possible to more firmly root the plants and realize stable greening over a long period of time.

また、緑化する手法としては、上述したように、芝生からなる植生マット8を敷設する方法が施工直後から緑化がなされるので好適であり、特に芝生育成時にスタフィロコッカス属またはブレビバクテリウム属に属する微生物を含む植物生長促進剤を与えて予め芝生にストレス耐性を備えさせた植生マットを用いる事が、緑化舗装という特殊条件下において長期間植物を健全な状態で維持するために最も望ましい。また、この方法のほかに、前記植生基盤材7に種子・肥料などを含有させる方法を選択しても良く、植生シート(水溶性シートの裏面に種子や肥料を担持させたもの)を敷設してもよい。   In addition, as described above, as described above, the method of laying the vegetation mat 8 made of lawn is suitable because it is greened immediately after the construction, and is particularly suitable for Staphylococcus spp. Or Brevibacterium spp. It is most desirable to use a vegetation mat provided with a plant growth promoter containing the microorganisms to which the turf has been previously provided with stress resistance in order to maintain the plant in a healthy state for a long time under the special condition of greening pavement. In addition to this method, a method in which seeds and fertilizers are contained in the vegetation base material 7 may be selected, and a vegetation sheet (a seed or fertilizer supported on the back surface of a water-soluble sheet) is laid. May be.

本発明の一実施の形態に係る緑化舗装の構成を概略的に示す側面図である。It is a side view which shows roughly the structure of the greening pavement which concerns on one embodiment of this invention. 前記緑化舗装の設置状況を概略的に示す説明図である。It is explanatory drawing which shows roughly the installation condition of the said greening pavement.

符号の説明Explanation of symbols

1 路床
2 保水性路盤
3 路盤材
4 保水材
5 不陸修正層
6 踏圧防止材
7 植生基盤材
8 植生マット
9 タイヤ
DESCRIPTION OF SYMBOLS 1 Subgrade 2 Water-retaining roadbed 3 Roadbed material 4 Water retention material 5 Uneven correction layer 6 Tread pressure prevention material 7 Vegetation base material 8 Vegetation mat 9 Tire

Claims (2)

路盤材と陰イオン吸着炭素材料を含む保水材を攪拌混合し、これを路床の上側へ敷き均した後に転圧することで形成された保水性路盤の上側に踏圧防止材が敷設され、前記踏圧防止材によって保護される空間には、スタフィロコッカス属またはブレビバクテリウム属に属する微生物を含む植物生長促進剤および/または陰イオン吸着炭素材料を含んだ植生基盤材が充填されてなり、更に前記植生基盤材の上側に植物が配置されてなる事を特徴とする緑化舗装。   A stepping pressure preventing material is laid on the upper side of the water retaining roadbed formed by stirring and mixing the roadbed material and the water retaining material containing the anion-adsorbing carbon material, laying it on the upper side of the roadbed, and then rolling it. The space protected by the prevention material is filled with a vegetation base material containing a plant growth promoter and / or anion adsorbing carbon material containing a microorganism belonging to the genus Staphylococcus or Brevibacterium, and A greening pavement characterized in that plants are arranged above the vegetation base material. 路盤材と陰イオン吸着炭素材料を含む保水材を攪拌混合し、これを路床の上側へ敷き均した後に転圧することで保水性路盤を形成する工程と、前記保水性路盤の上側に踏圧防止材を敷設すると共に、前記踏圧防止材によって保護される空間にスタフィロコッカス属またはブレビバクテリウム属に属する微生物を含む植物生長促進剤および/または陰イオン吸着炭素材料を含んだ植生基盤材を充填して植物育成層を形成する工程と、前記植物育成層の上側に植物を配置する工程とからなる事を特徴とする緑化舗装の施工方法。   Stirring and mixing the roadbed material and the water retention material containing the anion adsorbing carbon material, spreading the pressure on the upper side of the roadbed and then rolling it, and preventing the treading pressure on the upper side of the water retention roadbed In addition to laying wood, the space protected by the tread pressure prevention material is filled with a vegetation base material containing a plant growth promoter and / or anion adsorbing carbon material containing microorganisms belonging to the genus Staphylococcus or Brevibacterium Then, the construction method of the greening pavement characterized by consisting of the process of forming a plant growing layer, and the process of arrange | positioning a plant above the said plant growing layer.
JP2008122992A 2008-05-09 2008-05-09 Greened pavement and method for constructing the same Pending JP2009268421A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013237970A (en) * 2012-05-11 2013-11-28 Nisshoku Corp Greening pavement and construction method for the same
CN107306645A (en) * 2017-08-04 2017-11-03 天津亚德尔生物质科技有限公司 A kind of charcoal roadbed adsorbs vegetation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013237970A (en) * 2012-05-11 2013-11-28 Nisshoku Corp Greening pavement and construction method for the same
CN107306645A (en) * 2017-08-04 2017-11-03 天津亚德尔生物质科技有限公司 A kind of charcoal roadbed adsorbs vegetation

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