JP4237071B2 - Drainage device and drainage method for road structures - Google Patents

Drainage device and drainage method for road structures Download PDF

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JP4237071B2
JP4237071B2 JP2004028786A JP2004028786A JP4237071B2 JP 4237071 B2 JP4237071 B2 JP 4237071B2 JP 2004028786 A JP2004028786 A JP 2004028786A JP 2004028786 A JP2004028786 A JP 2004028786A JP 4237071 B2 JP4237071 B2 JP 4237071B2
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drainage
floor slab
mat
guide piece
wall
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JP2005220589A (en
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圭治 今村
浩志 竹村
幸春 宮原
友男 三村
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Sho Bond Corp
Maeda Kosen Co Ltd
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Maeda Kosen Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
    • Y02A10/30—Flood prevention; Flood or storm water management, e.g. using flood barriers

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Description

本発明は、道路構造物の床版の天端を流れる雨水等の排水装置及び排水方法に関する。   The present invention relates to a drainage device and a drainage method for rainwater and the like flowing through the top of a floor slab of a road structure.

一般に道路構造物の路面の雨水等は、道路側部に設けられた排水桝に排水される。   Generally, rainwater and the like on the road surface of a road structure is drained into a drainage basin provided on the side of the road.

近年では、透水性材料を用いた排水性舗装が施工されるため、雨水等は舗装層を通過して床版上を流れたり、床版上に滞水する。激しい降雨の時などは、排水桝への導水がスムーズに行われなかったり、排水桝の処理能力が不十分であったりして路面上に滞水する。   In recent years, since drainage pavement using a water-permeable material is constructed, rainwater or the like passes through the pavement layer or flows on the floor slab or stagnates on the floor slab. In case of heavy rainfall, the water is not smoothly transferred to the drainage basin or the capacity of the drainage basin is insufficient, resulting in water on the road surface.

そのため、交通への支障や舗装の損傷、床版への悪影響などが生じる。また、冬場には伸縮継手付近に滞留した水が凍結し、事故の原因ともなる。   As a result, there are obstacles to traffic, pavement damage, and adverse effects on floor slabs. In winter, water staying in the vicinity of the expansion joint freezes, causing an accident.

これらの水を排水する対策としては、通常、伸縮継手や地覆に沿って専用の透水パイプや水抜き管を配設して排水桝に連結することが行われている。   As a measure for draining these waters, usually, a dedicated permeable pipe or drain pipe is provided along an expansion joint or a ground cover and connected to a drain.

また、特許文献１に見られるような縁石と排水溝を兼ねた鋼製排水溝ユニットにおいて、水路部の道路側側部の舗装層の位置に導水穴が開口され、導水管が接続されて、床版遊水を導水管を経て流末管へ導くことによる排水方法も提案されている。   Moreover, in the steel drainage groove unit which served as the curb and the drainage groove as seen in Patent Document 1, a water introduction hole is opened at the position of the pavement layer on the side of the road side of the waterway part, and the water conduit is connected, A drainage method has also been proposed in which floor slab water is led to a spillway pipe through a water conduit.

しかしながら、透水パイプや水抜き管を配設して行う排水手段は、道路構造上、大径のものを用いることができず、しかも、表層、基層の両舗装層下にあるため、排水能力に限界があり、また、特許文献１のものは鋼製の縁石兼排水溝という構造の中でのものであり、これを用いない排水システムにおいては利用することはできない。
特公平６−３７７６２号公報 However, the drainage means that is provided with water permeable pipes and drainage pipes can not use large diameters due to the road structure, and because it is under the pavement layer of the surface layer and base layer, drainage capacity There is a limit, and the thing of patent documents 1 is in the structure of steel curb and drainage, and cannot be used in the drainage system which does not use this.
Japanese Examined Patent Publication No. 6-37762

本発明は、道路構造物の排水装置及び方法において、道路構造物の舗装が透水性であることによる課題、すなわち雨水等の路面への溢水や床版上の滞水についての課題を以下述べるところにより解決しようとするものである。   In the drainage device and method for a road structure, the present invention describes the problem due to the water permeability of the road structure pavement, that is, the problem of overflowing water on the road surface such as rain water and stagnant water on the floor slab. To try to solve.

本発明は、上記の課題を解決するため、つぎの手段を提供する。   In order to solve the above problems, the present invention provides the following means.

まずは、床版上面に敷かれた防水マットと舗装層間に地覆および／または伸縮継手に沿って排水マットを敷設したことを特徴とする道路構造物の排水装置を提供する。   First, a drainage device for a road structure is provided, characterized in that a drainage mat is laid along a ground cover and / or an expansion joint between a waterproof mat laid on the upper surface of a floor slab and a paving layer.

具体的には、床版上面に敷かれた防水シートと舗装層間に地覆および／または伸縮継手に沿って、熱可塑性のモノフィラメントを捲回したヘチマ状の構造体である排水マットを敷設するとともに本体の壁体下方に沿って、外側から内側にかけて下方に向けて傾斜する平板で形成された排水誘導片を、外側に突出して形成し、かつ、排水誘導片を形成した壁体に排水誘導片の縁部から上方にかけて、上方が上に凸の弧状形をした排水窓を形成した排水桝を排水マットにより導水された水が流入可能に床版に設置したことを特徴とする道路構造物の排水装置を提供する。 Specifically, along Jibuku and / or expansion joints in the waterproof sheet and pavement layers were laid on the floor plate upper surface, with laying drainage mat is a gourd-like structure wound thermoplastic monofilament A drainage guide piece formed of a flat plate that slopes downward from the outside to the inside along the lower wall of the main body protrudes outward, and the drainage guide piece is formed on the wall formed with the drainage guide piece. The road structure is characterized in that a drainage basin formed with an arcuate drainage window protruding upward from the edge of the floor is installed on the floor slab so that water guided by the drainage mat can flow in Provide drainage equipment.

また、床版上面に敷かれた防水マットと舗装層間に地覆および／または伸縮継手に沿って排水マットを敷設して床版上の水を排水桝に導水することを特徴とする道路構造物の排水方法を提供する。   A road structure characterized by laying a drainage mat along the ground cover and / or expansion joint between the waterproof mat placed on the upper surface of the floor slab and the paving layer, and guiding the water on the floor slab to the drainage basin Provide a drainage method.

具体的には、床版上面に敷かれた防水シートと舗装層間に地覆および／または伸縮継手に沿って、熱可塑性のモノフィラメントを捲回したヘチマ状の構造体である排水マットを敷設するとともに本体の壁体下方に沿って、外側から内側にかけて下方に向けて傾斜する平板で形成された排水誘導片を、外側に突出して形成し、かつ、排水誘導片を形成した壁体に排水誘導片の縁部から上方にかけて、上方が上に凸の弧状形をした排水窓を形成した排水桝を排水マットにより導水された水が流入可能に床版に設置し、床版上の水を排水マットを経て排水桝に導入することを特徴とする道路構造物の排水方法を提供する。 Specifically , a drainage mat that is a loofah-like structure in which thermoplastic monofilaments are wound is laid along the ground cover and / or expansion joint between the tarpaulin laid on the upper surface of the floor slab and the paving layer. A drainage guide piece formed of a flat plate that slopes downward from the outside to the inside along the lower wall of the main body protrudes outward, and the drainage guide piece is formed on the wall formed with the drainage guide piece. A drainage basin with an upwardly convex arcuate drainage window is installed on the floor slab so that water introduced by the drainage mat can flow into the floor slab, and the water on the floor slab is drained to the drainage mat. It provides a drainage method for road structures characterized by being introduced into a drainage basin.

本発明は上述のようにしてなるので、つぎの効果を有する。   Since the present invention is configured as described above, it has the following effects.

床版は、通常、縦断勾配および／または横断勾配を有して形成されているので、舗装層を通過した水は防水シート上を伸縮継手方向および／または地覆部へと移動する。本発明では、舗装層と防水シートとの間に伸縮継手および／または地覆部に沿って排水マットを敷設してあるので、床版上の水は、この排水マットへと流入し、この排水マットが排水桝への流水路となる。   Since the floor slab is usually formed with a longitudinal gradient and / or a transverse gradient, water that has passed through the pavement layer moves on the waterproof sheet toward the expansion joint and / or the ground cover. In the present invention, since the drainage mat is laid along the expansion joint and / or the ground cover between the pavement layer and the waterproof sheet, the water on the floor slab flows into the drainage mat and the drainage The mat serves as a water channel to the drain.

請求項１及び２において、排水マットは、管体や溝とは異なり、平板状であるため、舗装層の一部、たとえば基層部分の一部に置き換えて敷設することができるので、幅広の流水路を確保できる。また、排水マット上は基層部分を省略できるので路面上の排水能力にも優れる。 In Claims 1 and 2 , the drainage mat has a flat plate shape, unlike the pipe body and the groove, so that it can be laid and replaced by a part of the pavement layer, for example, a part of the base layer part. A road can be secured. Further, since the base layer portion can be omitted on the drainage mat, the drainage capacity on the road surface is excellent.

請求項１及び２において、排水桝を防水シート上の水を受け入れやすい構造としてあるので、排水マットにより導水された水の処理能力は向上する。 In Claims 1 and 2 , since the drainage basin has a structure that can easily accept the water on the waterproof sheet, the treatment capacity of the water guided by the drainage mat is improved.

本発明を実施するための最良の形態を以下図面に基き説明する。   The best mode for carrying out the present invention will be described below with reference to the drawings.

図１は、本発明が実施された道路構造物である橋梁の路面側からの斜視図、図２は、地覆沿い一般部の排水マットの敷設状態を示す橋軸方向部分断面図、図３は、排水桝側面部の排水マットの敷設状態を示す橋軸方向部分断面図、図４は、排水桝正面部の排水マットの敷設状態を示す橋軸方向部分断面図、図５は、伸縮継手部の排水マットの敷設状態を示す橋軸直角方向部分断面図である。   FIG. 1 is a perspective view from the road surface side of a bridge which is a road structure in which the present invention is implemented, FIG. 2 is a partial cross-sectional view in the axial direction of the bridge showing a laying state of a drainage mat in a general part along the ground cover, and FIG. Fig. 4 is a partial cross-sectional view in the direction of the bridge axis showing the laying state of the drainage mat on the side surface of the drainage basin, Fig. 4 is a partial cross-sectional view in the direction of the bridge axis showing the laying state of the drainage mat on the front side of the drainage basin, and Fig. 5 is an expansion joint. It is a bridge axis perpendicular direction partial sectional view showing the laying state of the drain mat of a part.

床版１１はＲＣ床版からなり、遊間１１ｂをはさんで対向する床版１１、１１端部裏込部１５ａに伸縮継手１５が、端部地覆沿いに床版排水機能を備えた排水桝１６が設置されている。   The floor slab 11 is an RC floor slab. The floor slab 11 and 11 are opposed to each other across the gap 11b. An expansion joint 15 is provided at an end back portion 15a, and a drainage basin having a floor slab drainage function along the end cover. 16 is installed.

床版１１の上面には、図２乃至図５に示すように、防水シート１２が敷設されて、防水シート１２の上に床版１１の地覆１１ａ及び伸縮継手１５の両側に沿って排水マット１７が舗装層の基層厚さ相当分敷設されている。排水マット１７は、接着剤等により固定しておくとよい。排水マット１７の敷設は、地覆１１ａの一般部ではそのまま直線的に沿って、床版１１の端部地覆沿い排水桝１６が設置されている場所では、地覆部１１ａに直接沿うことなく、排水桝１６の正面及び側面を囲むようにして敷設する。   As shown in FIGS. 2 to 5, a waterproof sheet 12 is laid on the top surface of the floor slab 11, and a drainage mat is formed on the waterproof sheet 12 along both sides of the ground cover 11 a of the floor slab 11 and the expansion joint 15. 17 is laid corresponding to the base layer thickness of the pavement layer. The drain mat 17 may be fixed with an adhesive or the like. The drain mat 17 is laid straight along the general portion of the ground cover 11a, and without being directly along the ground cover portion 11a at the place where the drainage basin 16 is installed along the end ground cover of the floor slab 11. The drainage basin 16 is laid so as to surround the front and side surfaces.

排水マットは、図６に示すような熱可塑性のモノフィラメントを捲縮したヘチマ状の構造体が好ましい。このモノフィラメントはポリエステル、ポリエチレン、ポリプロピレン等を材料とするものがある。中でもアスファルト敷設時の耐圧性、耐熱性を考慮すると軟化点、溶融点が比較的高いポリエステルが特に良い。   The drainage mat is preferably a loofah-like structure in which thermoplastic monofilaments are crimped as shown in FIG. Some of these monofilaments are made of polyester, polyethylene, polypropylene or the like. Of these, polyesters having a relatively high softening point and melting point are particularly preferable in consideration of pressure resistance and heat resistance during asphalt laying.

このヘチマ状の構造体は、構成するモノフィラメントの粗密を調整することにより、排水機能に応じた所定の密度に調整することが可能である。また、ヘチマ状の構造体の外周面には、外周面にフィルター１７ａが取り付けられてアスファルトの流入を防止する。メッシュ状、パンチング状の形態である。材質はプラスチックス、繊維、金属等特定するものではない。   The loofah-like structure can be adjusted to a predetermined density according to the drainage function by adjusting the density of the monofilaments that are formed. Further, a filter 17a is attached to the outer peripheral surface of the loofah-like structure to prevent the inflow of asphalt. It is in the form of mesh or punching. The material does not specify plastics, fibers, metals, etc.

本発明ではポリエステル繊維のメッシュ状で１ｍｍ目合いのものを使用した。   In the present invention, a polyester fiber mesh having a mesh size of 1 mm was used.

排水マット１７の敷設後はアスファルト等により舗装する。舗装は排水マット１７の敷設個所を除いて防水シート１２上に基層１３を敷設し、基層１３の敷設後、基層１３及び排水マット１７上に表層を敷設することにより行う。   After the drainage mat 17 is laid, it is paved with asphalt or the like. Pavement is performed by laying the base layer 13 on the waterproof sheet 12 except for the place where the drain mat 17 is laid, and then laying the surface layer on the base layer 13 and the drain mat 17 after the base layer 13 is laid.

このように構成することで、床版上を流れる雨水等は、図１に示すように矢印方向に移動し、排水マットへと流入する。排水マットはあたかも舗装層が切り欠かれて形成された溝に位置すると同時に流水路となって、雨水等を床版端部に設置した床版排水機能を備えた排水桝へと導水する。排水マットは防水シートの平面上に幅広に敷設できるので、大きな流量の受け入れが可能となる。   By comprising in this way, the rain water etc. which flow on a floor slab move to the arrow direction, as shown in FIG. 1, and flow into a drainage mat. The drainage mat is located in the groove formed by cutting out the pavement layer, and at the same time, it becomes a water channel and conducts rainwater etc. to a drainage basin with a floor slab drainage function installed at the end of the floor slab. Since the drain mat can be laid wide on the flat surface of the waterproof sheet, a large flow rate can be received.

なお、床版上の雨水等が図１に示す矢印方向に流れるのは、床版は通常縦断勾配および／または横断勾配をつけて形成されていることによる。   Note that the rainwater or the like on the floor slab flows in the direction of the arrow shown in FIG. 1 because the floor slab is usually formed with a longitudinal gradient and / or a transverse gradient.

図７は、本発明に使用される排水桝と排水桝の床版設置状態を示す分解斜視図である。   FIG. 7 is an exploded perspective view showing the drainage basin used in the present invention and the floor slab installation state of the drainage basin.

この実施例に示す排水桝は、特願２００３−３３７９２５に示す排水装置と同構造のものであるが、この例に限定されるものでないことはもちろんである。   The drainage basin shown in this embodiment has the same structure as the drainage device shown in Japanese Patent Application No. 2003-337925, but it is of course not limited to this example.

この排水桝は、公知の道路構造物の排水装置と同様に本体１、蓋２、排水管３とからなっている。   This drainage basin is composed of a main body 1, a lid 2 and a drain pipe 3 in the same manner as a well-known drainage device for road structures.

本体１は、鋼製にして平面正方形又は長方形とし、その下端部以下に推状の落し口１ｃを有している。   The main body 1 is made of steel and has a square or rectangular shape, and has a thrust-like drop opening 1c below its lower end.

本体１の壁体１ａの下方、この実施例では三方の壁体１ａの下端方の外側に突出して、排水誘導片４が一体に形成されるとともに同じ三方の壁体１ａに排水窓１ｂが開口されている。   Under the wall 1a of the main body 1, in this embodiment, it protrudes to the outside of the lower end of the three-sided wall 1a, the drainage guiding piece 4 is integrally formed, and the drainage window 1b is opened in the same three-sided wall 1a. Has been.

排水誘導片４は、誘導面が平面からなり外側から内側にかけて下方に向けて傾斜する平板で形成され、この排水誘導片４の内側縁部から上方にかけて、壁体１ａの高さの２分の１以上の長孔にして、かつ、上方が上に凸の弧状形をした排水窓が形成されている。排水窓１ｂは、大きな流量に備えるため大口であるとともに荷重に対応するため上方を弧状形とした。この実施例では、一方の壁体１ａは、道路幅員方向の一側端部に位置するので、排水誘導片４は形成されず、排水窓１ｂは開口されず、その両側に突出壁１ｄを形成してなる。この突出壁１ｄは床版上の雨水等の横もれを防止する機能を有するが、ない場合は４面に誘導片４を形成する。   The drainage guide piece 4 is formed of a flat plate whose guide surface is a flat surface and is inclined downward from the outside to the inside. The drainage guide piece 4 extends upward from the inner edge of the drainage guide piece 4 to half the height of the wall 1a. A drainage window having one or more elongated holes and having an arcuate shape with an upward convex upward is formed. The drainage window 1b has a large opening in order to prepare for a large flow rate, and has an arcuate shape on the upper side to cope with the load. In this embodiment, since one wall body 1a is located at one side end in the road width direction, the drainage guide piece 4 is not formed, the drainage window 1b is not opened, and the protruding walls 1d are formed on both sides thereof. Do it. The projecting wall 1d has a function of preventing the rainwater and the like from leaking on the floor slab.

蓋２は鋼製にして集水穴２ａが形成されている。   The lid 2 is made of steel and has a water collecting hole 2a.

排水管３は本体１の落し口１ｃに連接している。   The drain pipe 3 is connected to the outlet 1 c of the main body 1.

このようにして形成された排水桝は、床版１１に設置される。図は橋梁の構造を分りやすくするため一部分を切り欠いた形式で示してある。   The drainage basin thus formed is installed on the floor slab 11. The figure is shown with a part cut away to make the structure of the bridge easier to understand.

この橋梁の構造は、床版１１はＲＣ床版からなり、床版１１の上に防水シート１２を、防水シート１２の上の所定の個所に排水マット１７を敷設し、排水マット１７が敷設されていない防水シートの上に排水性舗装からなる表層１４を敷設して、上に基層（この図には表れていない）を敷設し、防水シート１２と形成されている。   In this bridge structure, the floor slab 11 is an RC floor slab, a waterproof sheet 12 is laid on the floor slab 11, a drain mat 17 is laid at a predetermined location on the waterproof sheet 12, and the drain mat 17 is laid. A surface layer 14 made of drainable pavement is laid on a waterproof sheet that is not, and a base layer (not shown in this figure) is laid on the surface layer 14 to form a waterproof sheet 12.

この実施の例において、排水桝は、排水窓１ｂの下端部が床版１１上面とほぼ面一又は以下になるようにして設置される。設置後、床版１１上面から排水誘導片４の溝４ａの内側縁部まで面なりに防水シート１２が敷設される。   In this embodiment, the drainage basin is installed so that the lower end of the drainage window 1b is substantially flush with or below the upper surface of the floor slab 11. After installation, the waterproof sheet 12 is laid so as to face from the upper surface of the floor slab 11 to the inner edge of the groove 4a of the drainage guide piece 4.

この排水桝は、壁体に大きな排水窓が形成されているので排水マットを流水路として流れる大量の雨水等の処理能力を十分に満たすことができる。   Since this drainage basin has a large drainage window formed in the wall, it can sufficiently satisfy the treatment capacity of a large amount of rainwater and the like that flows through the drainage mat as a water channel.

本発明の実施の形態を示す橋梁の路面側からの斜視図である。It is a perspective view from the road surface side of the bridge which shows embodiment of this invention. 図１における地覆沿い一般部の排水マットの敷設状態を示す橋軸方向部分断面図である。It is a bridge-axis direction fragmentary sectional view which shows the laying state of the drain mat of the general part along the ground cover in FIG. 図１における排水桝側面部の排水マットの敷設状態を示す橋軸方向部分断面図である。It is a bridge-axis direction fragmentary sectional view which shows the laying state of the drainage mat of the drainage side surface part in FIG. 図１における排水桝正面部の排水マットの敷設状態を示す橋軸方向部分断面図である。It is a bridge-axis direction fragmentary sectional view which shows the laying state of the drainage mat of the drainage basin front part in FIG. 伸縮継手部の排水マットの敷設状態を示す橋軸直角方向部分断面図である。It is a bridge shaft perpendicular direction partial sectional view showing the laying state of the drainage mat of an expansion joint part. 本発明に用いられる排水マットの断面図である。It is sectional drawing of the drainage mat used for this invention. 排水桝と道路構造を示す切り欠き分解斜視図である。It is a notch disassembled perspective view which shows a drainage basin and a road structure.

符号の説明Explanation of symbols

１１ 床版 １１ａ 地覆
１２ 防水シート
１３ 基層
１４ 表層
１５ 伸縮継手 １５ａ 伸縮継手裏込部
１６ 排水桝
１７ 排水マット １７ａ フィルター
１ 本体 １ａ 壁体
１ｃ 落し口 １ｄ 突出壁
２ 蓋 ２ａ 集水穴
３ 排水管
４ 排水誘導片 DESCRIPTION OF SYMBOLS 11 Floor slab 11a Ground cover 12 Waterproof sheet 13 Base layer 14 Surface layer 15 Expansion joint 15a Expansion joint back part 16 Drainage basin 17 Drainage mat 17a Filter 1 Main body 1a Wall 1c Drop port 1d Projection wall 2 Lid 2a Water collecting hole 3 Drain pipe 4 Drainage guide piece

Claims (2)

床版上面に敷かれた防水シートと舗装層間に地覆および／または伸縮継手に沿って、熱可塑性のモノフィラメントを捲回したヘチマ状の構造体である排水マットを敷設するとともに本体の壁体下方に沿って、外側から内側にかけて下方に向けて傾斜する平板で形成された排水誘導片を、外側に突出して形成し、かつ、排水誘導片を形成した壁体に排水誘導片の縁部から上方にかけて、上方が上に凸の弧状形をした排水窓を形成した排水桝を排水マットにより導水された水が流入可能に床版に設置したことを特徴とする道路構造物の排水装置。 A drainage mat that is a loofah-like structure wound with thermoplastic monofilaments is laid along the ground cover and / or expansion joint between the tarpaulin on the top of the floor slab and the paving layer, and below the wall of the main body A drainage guide piece formed of a flat plate that slopes downward from the outside to the inside along the wall and protrudes outward, and is formed above the edge of the drainage guide piece on the wall body on which the drainage guide piece is formed. A drainage device for a road structure, characterized in that a drainage basin formed with an arcuate drainage window having an upward convex shape is installed on a floor slab so that water guided by a drainage mat can flow into the floor slab . 床版上面に敷かれた防水シートと舗装層間に地覆および／または伸縮継手に沿って、熱可塑性のモノフィラメントを捲回したヘチマ状の構造体である排水マットを敷設するとともに本体の壁体下方に沿って、外側から内側にかけて下方に向けて傾斜する平板で形成された排水誘導片を、外側に突出して形成し、かつ、排水誘導片を形成した壁体に排水誘導片の縁部から上方にかけて、上方が上に凸の弧状形をした排水窓を形成した排水桝を排水マットにより導水された水が流入可能に床版に設置し、床版上の水を排水マットを経て排水桝に導入することを特徴とする道路構造物の排水方法。 A drainage mat that is a loofah-like structure wound with thermoplastic monofilaments is laid along the ground cover and / or expansion joint between the tarpaulin on the top of the floor slab and the paving layer, and below the wall of the main body A drainage guide piece formed of a flat plate that slopes downward from the outside to the inside along the wall , and protrudes outward, and is formed above the edge of the drainage guide piece on the wall body on which the drainage guide piece is formed. Then, a drainage basin with an upwardly convex arcuate drainage window is installed on the floor slab so that water guided by the drainage mat can flow into it, and the water on the floor slab passes through the drainage mat into the drainage basin. A drainage method for road structures characterized by being introduced.
JP2004028786A 2004-02-05 2004-02-05 Drainage device and drainage method for road structures Expired - Lifetime JP4237071B2 (en)

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CN105401503B (en) * 2015-10-21 2018-06-22 浙江工业大学 It is a kind of to have from the road surface and ground structure of draining and self-cleaning function and its construction method
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