JP6924489B2

JP6924489B2 - Concrete lid member for U-shaped gutters

Info

Publication number: JP6924489B2
Application number: JP2018081753A
Authority: JP
Inventors: 宏志竹内
Original assignee: カサイコンクリート株式会社
Priority date: 2018-04-20
Filing date: 2018-04-20
Publication date: 2021-08-25
Anticipated expiration: 2038-04-20
Also published as: JP2019190072A

Description

本発明は、車道と歩道の境界部分に設けられるＵ形側溝の上方開口部を塞ぐコンクリート製蓋部材に関する。 The present invention relates to a concrete lid member that closes an upper opening of a U-shaped gutter provided at a boundary between a roadway and a sidewalk.

一般に、自動車道と歩道の境界には、縁石が設置されており、その縁石に隣接して、車道と歩道の境界部分には、自動車道や歩道に降った雨水を排水するＵ形側溝が埋設されている。
また、近年では、自動車道と歩道の間に自転車道を設ける道路設計が多くなってきている。
例えば、特許文献１には、自動車道と歩道の間の自転車道に埋設されるスリット側溝であって、内部に略円柱状の排水路が形成され且つ前記排水路に連通されたスリットつき凸条が形成されているスリット側溝が開示されている。かかるスリット側溝は、スリットつき凸条の上面が自転車道と面一となって露出するように、歩道と自転車道の境界部分に埋設される。
特許文献２には、Ｕ形側溝の上面に載置される縁石付き上蓋であって、縁石と、上面舗装止めが長さ方向に連続する切下げエプロンと、を有し、切下げエプロンのうち上面舗装止めの付近に、Ｕ形側溝の排水路へと水を排出するためのスリット切込が形成されている縁石付き上蓋が開示されている。 Generally, a curb is installed at the boundary between the motorway and the sidewalk, and a U-shaped gutter that drains rainwater that has fallen on the motorway or the sidewalk is buried at the boundary between the motorway and the sidewalk adjacent to the curb. Has been done.
Moreover, in recent years, the number of road designs in which a bicycle path is provided between a motorway and a sidewalk is increasing.
For example, in Patent Document 1, a slit gutter embedded in a bicycle path between a motorway and a sidewalk, a substantially columnar drainage channel is formed inside, and a ridge with a slit is communicated with the drainage channel. The slit gutter in which is formed is disclosed. The slit gutter is buried at the boundary between the sidewalk and the bicycle path so that the upper surface of the slit-shaped convex strip is flush with the bicycle path and exposed.
Patent Document 2 includes a curb-mounted upper lid placed on the upper surface of a U-shaped gutter, and has a curb and a devaluation apron in which the upper surface pavement stopper is continuous in the length direction. A curbed top lid is disclosed in which a slit notch is formed in the vicinity of the stop to drain water into the drainage channel of the U-shaped gutter.

特開２０１４−２０６０２８号公報Japanese Unexamined Patent Publication No. 2014-206028 特開２０１７−１０６２９１号公報JP-A-2017-106291

ところで、自動車道と歩道の間に自転車道を構築する場合、既存のＵ形側溝を含む道路を一旦取り壊してから新たに自転車道を構築する場合と、既存のＵ形側溝を利用しつつ一部を改修して自転車道を構築する場合と、がある。
特許文献１のスリット側溝は、道路を新規に構築する場合に適するが、既存の道路に埋設されているＵ形側溝を利用しつつ、自動車道と歩道の間に自転車道を構築する場合には適さない。
特許文献２の縁石付き上蓋は、既存の道路に埋設されているＵ形側溝を利用し、自動車道と歩道の間に自転車道を構築する場合に使用できると考えられる。即ち、自動車道と歩道の境界部分にＵ形側溝及びその上蓋が埋設されている既存の道路を改修するべく、そのＵ形側溝を残しつつ上蓋及び表面舗装などを除去した後、そのＵ形側溝の上に縁石付き上蓋を設置することによって、自転車道を構築できると考えられる。 By the way, when constructing a bicycle path between the motorway and the sidewalk, there are cases where the road including the existing U-shaped gutter is demolished and then a new bicycle path is constructed, and there are some cases where the existing U-shaped gutter is used. There are cases where the bicycle path is constructed by renovating.
The slit gutter of Patent Document 1 is suitable for constructing a new road, but when constructing a bicycle path between a motorway and a sidewalk while using a U-shaped gutter buried in an existing road, Not suitable.
It is considered that the upper lid with a curb of Patent Document 2 can be used when constructing a bicycle path between a motorway and a sidewalk by utilizing a U-shaped gutter buried in an existing road. That is, in order to repair an existing road in which a U-shaped gutter and its upper lid are buried at the boundary between a motorway and a sidewalk, after removing the upper lid and surface pavement while leaving the U-shaped gutter, the U-shaped gutter It is thought that a bicycle path can be constructed by installing a top lid with a curb on the top.

しかしながら、特許文献２の縁石付き上蓋にあっては、スリット切込が形成されているが、切下げエプロンの上面に水が滞留し易く、切下げエプロンの排水性が不十分となる。排水性を高めるため、スリット切込の大きさや形成数を大きくすることが考えられるが、そうすると切下げエプロンの強度が低下するおそれがある。 However, in the upper lid with a curb of Patent Document 2, although a slit cut is formed, water tends to stay on the upper surface of the devaluation apron, and the drainage property of the devaluation apron becomes insufficient. It is conceivable to increase the size and number of slit cuts in order to improve drainage, but this may reduce the strength of the devaluation apron.

本発明の目的は、既存の道路の改修に用いることができ、排水性及び耐久性に優れたＵ形側溝用のコンクリート製蓋部材を提供することである。 An object of the present invention is to provide a concrete lid member for a U-shaped gutter that can be used for repairing an existing road and has excellent drainage and durability.

本発明は、車道と歩道の境界部分に設けられるＵ形側溝であって第１側壁及び第２側壁の間に排水路が形成されたＵ形側溝に載置されるコンクリート製蓋部材において、前記Ｕ形側溝の第１側壁の上面に載置される縁石部又は縁石台座部と、前記Ｕ形側溝の第２側壁の上面に載置される載置領域と前記Ｕ形側溝の上方開口部を塞ぐ閉塞領域とを有するエプロン部と、を有し、前記縁石部又は縁石台座部及びエプロン部がコンクリートにて一体的に成形されており、前記エプロン部の載置領域の上面内に、上下方向に貫通され且つ前記第２側壁の上面から前記排水路へと通水可能とする通水孔部が形成されており、前記通水孔部が、上下方向に延在する第１孔部と、前記第１孔部の下端に連通され且つ前記載置領域から閉塞領域の一部に延在するように前記エプロン部の幅方向に拡張された第２孔部と、を有する。 The present invention relates to a concrete gutter member mounted on a U-shaped gutter provided at a boundary between a road and a sidewalk and having a drainage channel formed between the first side wall and the second side wall. A curb or curb pedestal to be placed on the upper surface of the first side wall of the U-shaped gutter, a mounting area to be placed on the upper surface of the second side wall of the U-shaped gutter, and an upper opening of the U-shaped gutter. It has an apron portion having a closed region, and the curb portion or the curb pedestal portion and the apron portion are integrally formed of concrete, and the apron portion is placed in the upper surface of the mounting area in the vertical direction. A water passage hole portion is formed so as to allow water to pass from the upper surface of the second side wall to the drainage channel , and the water passage hole portion extends in the vertical direction with the first hole portion. It has a second hole portion that communicates with the lower end of the first hole portion and is extended in the width direction of the apron portion so as to extend from the previously described placement region to a part of the closed region .

本発明の好ましいコンクリート製蓋部材は、前記エプロン部の上面に、前記通水孔部に水を導く導水溝部が形成されている。
本発明の好ましいコンクリート製蓋部材は、前記第１孔部が、下方に向かって次第に窄んだ形状とされている。 In the preferable concrete lid member of the present invention, a water guide groove portion for guiding water to the water passage hole portion is formed on the upper surface of the apron portion.
The preferable concrete lid member of the present invention has a shape in which the first hole portion is gradually narrowed downward .

本発明のコンクリート製蓋部材によれば、新設のみならず、既存のＵ形側溝を利用して路肩構造物を構築できる。
本発明の蓋部材は、雨水などをＵ形側溝へと排出する通水孔部がエプロン部の載置領域に形成されているので、蓋部材の上から荷重や振動が長期間加わっても、エプロン部が破損し難く、耐久性に優れている。 According to the concrete lid member of the present invention, not only a new construction but also a road shoulder structure can be constructed by utilizing an existing U-shaped gutter.
In the lid member of the present invention, a water passage hole for discharging rainwater or the like to the U-shaped gutter is formed in the mounting area of the apron portion, so that even if a load or vibration is applied from above the lid member for a long period of time, The apron part is not easily damaged and has excellent durability.

本発明の第１実施形態のコンクリート製蓋部材の平面図。The plan view of the concrete lid member of 1st Embodiment of this invention. 同蓋部材の底面図。Bottom view of the lid member. 同蓋部材の右側面図。Right side view of the lid member. 同蓋部材の左側面図。Left side view of the lid member. 同蓋部材の正面図。Front view of the lid member. 図１のＶＩ−ＶＩ線で切断した断面図。FIG. 5 is a cross-sectional view taken along the line VI-VI of FIG. 図１のＶＩＩ−ＶＩＩ線で切断した断面図。FIG. 2 is a cross-sectional view taken along the line VII-VII of FIG. 同蓋部材の縁石部の一部省略拡大斜視図。Enlarged perspective view of the curb part of the lid member omitted. 同蓋部材を用いて構築された路肩構造物の平面図。The plan view of the road shoulder structure constructed by using the same lid member. 図９のＸ−Ｘ線で切断した拡大断面図。FIG. 9 is an enlarged cross-sectional view taken along the line XX of FIG. 路肩構造物の構築途中を示す参考断面図。A reference cross-sectional view showing the construction of the road shoulder structure. 第２実施形態のコンクリート製蓋部材の正面図。The front view of the concrete lid member of 2nd Embodiment. 同蓋部材を幅方向で切断した断面図。A cross-sectional view of the lid member cut in the width direction. 同蓋部材を用いて構築された路肩構造物の拡大断面図。An enlarged cross-sectional view of a road shoulder structure constructed using the same lid member.

［第１実施形態］
第１実施形態は、縁石部とエプロン部が一体的に形成されているコンクリート製蓋部材に関する。
図１乃至図５は、第１実施形態のコンクリート製蓋部材の六面図（ただし、背面図は、図５の正面図と対称的に表れるので省略している）であり、図６及び図７は、コンクリート製蓋部材を幅方向で切断した断面図であり、図８は、コンクリート製蓋部材の要部拡大斜視図である。ただし、図５乃至図７では、蓋部材とＵ形側溝の関係を判り易くするため、便宜上、Ｕ形側溝を二点鎖線で併記している。
図１乃至図７において、本発明のコンクリート製蓋部材１は、縁石部２と、エプロン部３と、を有し、前記縁石部２及びエプロン部３がコンクリートにて一体的に成形されている（プレキャストコンクリート製品）。
縁石部２及びエプロン部３は、蓋部材１の長さ方向に直線状に延設されている。
蓋部材１の平面視形状は、通常、略矩形状であり、好ましくは、略長方形状である。蓋部材１の長さ方向の長さは、特に限定されず、例えば、５００ｍｍ〜３０００ｍｍであり、好ましくは１０００ｍｍ〜２５００ｍｍであり、より好ましくは１５００ｍｍ〜２２００ｍｍである。また、蓋部材１の幅方向の長さは、特に限定されず、例えば、４００ｍｍ〜１０００ｍｍであり、好ましくは、５００ｍｍ〜８００ｍｍである。
図示例の蓋部材１は、長さ約２０００ｍｍ×幅約６５０ｍｍである。 [First Embodiment]
The first embodiment relates to a concrete lid member in which a curb portion and an apron portion are integrally formed.
1 to 5 are a six-view view of the concrete lid member of the first embodiment (however, the rear view is omitted because it appears symmetrically with the front view of FIG. 5). 7 is a cross-sectional view of the concrete lid member cut in the width direction, and FIG. 8 is an enlarged perspective view of a main part of the concrete lid member. However, in FIGS. 5 to 7, in order to make it easier to understand the relationship between the lid member and the U-shaped gutter, the U-shaped gutter is also shown by a chain double-dashed line for convenience.
In FIGS. 1 to 7, the concrete lid member 1 of the present invention has a curb portion 2 and an apron portion 3, and the curb portion 2 and the apron portion 3 are integrally formed of concrete. (Precast concrete products).
The curb portion 2 and the apron portion 3 extend linearly in the length direction of the lid member 1.
The plan-view shape of the lid member 1 is usually substantially rectangular, preferably substantially rectangular. The length of the lid member 1 in the length direction is not particularly limited, and is, for example, 500 mm to 3000 mm, preferably 1000 mm to 2500 mm, and more preferably 1500 mm to 2200 mm. The length of the lid member 1 in the width direction is not particularly limited, and is, for example, 400 mm to 1000 mm, preferably 500 mm to 800 mm.
The lid member 1 in the illustrated example has a length of about 2000 mm and a width of about 650 mm.

本発明のコンクリート製蓋部材１は、図５乃至図７に示すように、第１側壁８１及び第２側壁８２の間に排水路８３が形成されたＵ形側溝８の上に載置して使用される。
かかる蓋部材１は、Ｕ形側溝８の第１側壁８１の上面及び第２側壁８２の上面に載置される部分と、Ｕ形側溝８の上方開口部（上方開口部は、排水路８３の上方側を指す）を閉塞する部分と、を有する。 As shown in FIGS. 5 to 7, the concrete lid member 1 of the present invention is placed on a U-shaped gutter 8 in which a drainage channel 83 is formed between the first side wall 81 and the second side wall 82. used.
The lid member 1 has a portion mounted on the upper surface of the first side wall 81 and the upper surface of the second side wall 82 of the U-shaped gutter 8 and an upper opening of the U-shaped gutter 8 (the upper opening is the drainage channel 83). It has a portion that closes (pointing to the upper side).

具体的には、縁石部２の高さは、特に限定されず、例えば、１０ｍｍ〜２００ｍｍであり、好ましくは、１００ｍｍ〜２００ｍｍであり、より好ましくは１２０ｍｍ〜１８０ｍｍである。図示例の縁石部２の高さは、１５０ｍｍである。施工場所によっては、歩道に車両を載り上げやすくさせるために、車道に対する歩道の高さを１０ｍｍ〜５０ｍｍくらいに設定しなければならない場合があり、縁石部２の高さは、適宜設定される。ただし、縁石部２の高さは、後述するエプロン部３の基準面から縁石部２の上面までの長さをいう。
主として図５乃至図７を参照して、縁石部２の下面は、Ｕ形側溝８の第１側壁８１の上面に載置される部分である。縁石部２の下面は、略平坦状でもよいが、図示例では、縁石部２の下面は、Ｕ形側溝８の第１側壁８１の上面に接する下座面２ａと、その下座面２ａよりも少し上方に位置する上座面２ｂと、からなる。 Specifically, the height of the curb portion 2 is not particularly limited, and is, for example, 10 mm to 200 mm, preferably 100 mm to 200 mm, and more preferably 120 mm to 180 mm. The height of the curb portion 2 in the illustrated example is 150 mm. Depending on the construction site, the height of the sidewalk with respect to the roadway may have to be set to about 10 mm to 50 mm in order to make it easier for the vehicle to be placed on the sidewalk, and the height of the curb portion 2 is appropriately set. However, the height of the curb portion 2 refers to the length from the reference surface of the apron portion 3 described later to the upper surface of the curb portion 2.
Mainly referring to FIGS. 5 to 7, the lower surface of the curb portion 2 is a portion placed on the upper surface of the first side wall 81 of the U-shaped gutter 8. The lower surface of the curb portion 2 may be substantially flat, but in the illustrated example, the lower surface of the curb portion 2 is formed from the lower seat surface 2a in contact with the upper surface of the first side wall 81 of the U-shaped gutter 8 and the lower seat surface 2a thereof. Also consists of an upper seat surface 2b located slightly above.

縁石部２の上面には、切欠き部４が形成されている。この切欠き部４は、例えば、縁石鋲や道路鋲などの縁石附属設備（例えば、支線誘導用のマーカー、反射板を具備する縁石鋲など）を取り付ける目的、或いは、それ自体が車両などを誘導する方向性表示とする目的などで設けられている。
切欠き部４の平面視形状は、目的に応じて適宜設定できる。例えば、縁石附属設備を取り付けるための切欠き部は、その設備の形状に合わせた平面視形状に形成される。
図示例では、車両などを誘導する方向性表示としての切欠き部４を表しており、かかる切欠き部４は、例えば、方向性を表示する矢印のような平面視形状に形成されている。
なお、切欠き部４の平面視形状は、前記のような矢印に限られず、略平行四辺形、略菱形、略長方形又は正方形などであってもよい。
また、切欠き部４の表面は、水平面でもよいが、雨水などが溜まり難くするために傾斜面とされている。切欠き部４の表面の傾斜方向は、特に限定されず、図示例では、切欠き部４の表面は、長さ方向一方側から反対側に下斜めの傾斜面とされている。なお、特に図示しないが、切欠き部４の表面が、幅方向一方側から反対側に下斜めの傾斜面とされていてもよく、或いは、切欠き部４の表面が屋根状に形成されていてもよい。前記屋根状としては、切欠き部４の表面の幅方向中央部を頂点（最高点）とし、その頂点から幅方向一方側及び反対側へと斜め下がりに表面が形成されている場合などが挙げられる。 A notch 4 is formed on the upper surface of the curb 2. The notch 4 is used for the purpose of attaching a curb attachment such as a curb stud or a road stud (for example, a marker for guiding a branch line, a curb stud having a reflector, etc.), or guides a vehicle or the like by itself. It is provided for the purpose of displaying the direction to be displayed.
The plan view shape of the notch portion 4 can be appropriately set according to the purpose. For example, the notch for attaching the equipment attached to the curb is formed in a plan view shape that matches the shape of the equipment.
In the illustrated example, a notch portion 4 as a direction indicator for guiding a vehicle or the like is represented, and the notch portion 4 is formed in a plan view shape such as an arrow indicating the directionality.
The plan view shape of the notch portion 4 is not limited to the arrow as described above, and may be a substantially parallelogram, a substantially rhombus, a substantially rectangle, a square, or the like.
Further, the surface of the notch portion 4 may be a horizontal surface, but is made an inclined surface in order to prevent rainwater and the like from collecting. The inclination direction of the surface of the notch portion 4 is not particularly limited, and in the illustrated example, the surface of the notch portion 4 is an inclined surface obliquely downward from one side in the length direction to the other side. Although not particularly shown, the surface of the notch portion 4 may be an inclined surface obliquely downward from one side in the width direction to the opposite side, or the surface of the notch portion 4 is formed in a roof shape. You may. Examples of the roof shape include a case where the central portion of the surface of the notch portion 4 in the width direction is an apex (highest point) and the surface is formed diagonally downward from the apex to one side and the opposite side in the width direction. Be done.

蓋部材１のエプロン部３は、Ｕ形側溝８の第２側壁８２の上面に載置される載置領域と、前記Ｕ形側溝８の上方開口部を塞ぐ閉塞領域と、を有する。
エプロン部３の上面を区画して説明すると、エプロン部３の上面は、縁石部２の直近に形成された所定幅の基準面３１ａと、その基準面３１ａよりも下方に下がった切下げ面３１ｂと、前記基準面３１ａと切下げ面３１ｂの間の段面３１ｃと、からなる。
基準面３１ａは、蓋部材１の幅方向に延び、その一方側は、段面３１ｃに連続し、その幅方向反対側は、縁石部２の基部に連続している。基準面３１ａは、縁石部２側に下向きで僅かに傾斜した傾斜面とされている。その傾斜角度は、水勾配程度で良く、例えば、０．５度〜２度である。切下げ面３１ｂは、略水平に形成されている。
また、エプロン部３の下面を区画して説明すると、エプロン部３の下面は、Ｕ形側溝８の上方開口部を閉塞する閉塞領域の下面と、Ｕ形側溝８の第２側壁８２の上面に載置される載置領域の下面と、からなる。エプロン部３の載置領域の下面は、Ｕ形側溝８の第２側壁８２の上面に載置される部分である。前記載置領域の下面は、略平坦状でもよいが、図示例では、載置領域の下面は、Ｕ形側溝８の第２側壁８２の上面に接する下座面３ａと、その下座面３ａよりも少し上方に位置する上座面３ｂと、からなる。 The apron portion 3 of the lid member 1 has a mounting region mounted on the upper surface of the second side wall 82 of the U-shaped gutter 8 and a closed region that closes the upper opening of the U-shaped gutter 8.
Explaining by dividing the upper surface of the apron portion 3, the upper surface of the apron portion 3 includes a reference surface 31a having a predetermined width formed in the immediate vicinity of the curb portion 2 and a devaluation surface 31b lowered below the reference surface 31a. , A stepped surface 31c between the reference surface 31a and the devaluation surface 31b.
The reference surface 31a extends in the width direction of the lid member 1, one side thereof is continuous with the step surface 31c, and the opposite side thereof is continuous with the base portion of the curb portion 2. The reference surface 31a is an inclined surface that is slightly inclined downward toward the curb portion 2. The inclination angle may be about a water gradient, for example, 0.5 degree to 2 degrees. The cut-down surface 31b is formed substantially horizontally.
Further, explaining by partitioning the lower surface of the apron portion 3, the lower surface of the apron portion 3 is formed on the lower surface of the closed region that closes the upper opening of the U-shaped gutter 8 and the upper surface of the second side wall 82 of the U-shaped gutter 8. It consists of the lower surface of the mounting area to be mounted. The lower surface of the mounting area of the apron portion 3 is a portion to be mounted on the upper surface of the second side wall 82 of the U-shaped gutter 8. The lower surface of the above-described mounting region may be substantially flat, but in the illustrated example, the lower surface of the mounting region is a lower seat surface 3a in contact with the upper surface of the second side wall 82 of the U-shaped gutter 8 and a lower seat surface 3a thereof. It is composed of an upper seating surface 3b located slightly above.

エプロン部３の載置領域には、エプロン部３の上面から第２側壁８２の上面側へと通水可能とする通水孔部５が形成されている。この通水孔部５は、エプロン部３の上下方向に貫通する貫通部分を有する。前記上下方向に貫通するとは、Ｕ形側溝８に蓋部材１を載置した状態で上側から見ると、貫通部分を通じて第２側壁８２の上面を視認できることをいう。
通水孔部５の貫通部分の位置は、エプロン部３の載置領域内（蓋部材１をＵ形側溝８に載置した際、Ｕ形側溝８の第２側壁８２の上面内に対応するような位置）であれば特に限定されないが、エプロン部３の強度をより低下させないという観点から、蓋部材１をＵ形側溝８に載置した際に第２側壁８２の上面の幅方向略中央部又は中央部付近に対応するような位置が好ましい。 In the mounting area of the apron portion 3, a water passage hole portion 5 that allows water to pass from the upper surface of the apron portion 3 to the upper surface side of the second side wall 82 is formed. The water passage portion 5 has a penetrating portion that penetrates the apron portion 3 in the vertical direction. Penetrating in the vertical direction means that the upper surface of the second side wall 82 can be visually recognized through the penetrating portion when viewed from above with the lid member 1 placed in the U-shaped gutter 8.
The position of the penetrating portion of the water passage portion 5 corresponds to the inside of the mounting area of the apron portion 3 (when the lid member 1 is mounted on the U-shaped gutter 8, the position of the penetrating portion corresponds to the inside of the upper surface of the second side wall 82 of the U-shaped gutter 8. Such a position) is not particularly limited, but from the viewpoint of not further reducing the strength of the apron portion 3, when the lid member 1 is placed in the U-shaped gutter 8, the upper surface of the second side wall 82 is substantially centered in the width direction. A position corresponding to the portion or the vicinity of the central portion is preferable.

通水孔部５は、上下方向に延びる直管状でもよいが、好ましくは、通水孔部５は、エプロン部３の上面（載置領域に対応する切下げ面３１ｂ）から下方に向かって次第に窄んだ第１孔部５１と、第１孔部５１に連通され且つエプロン部３の幅方向に拡張された第２孔部５２と、を有する。第２孔部５２は、第１孔部５１の下方に位置しており、第１孔部５１及び第２孔部５２から、通水孔部５の貫通部分が構成される。
第１孔部５１は、断面視で、下方に向かうに従って次第に幅狭に形成されている（下方に向かうに従って開口面積が小さくなっている）。換言すると、第１孔部５１は上方に向かうに従って拡張されている。
第１孔部５１の上方側は、載置領域内に位置しており、集水し易くするために、周囲が受け口状に拡げられた最大開口部とされている。第１孔部５１の下方側は、載置領域内に位置しており、開口面積が最も小さい最小開口部とされている。
第１孔部５１の平面視形状は、特に限定されないが、図１に示すような、平面視略矩形状のほか、特に図示しないが、略円形状、略楕円形状などであってもよい。 The water passage portion 5 may be a straight tube extending in the vertical direction, but preferably, the water passage portion 5 gradually narrows downward from the upper surface of the apron portion 3 (cutting surface 31b corresponding to the mounting area). It has a first hole portion 51 and a second hole portion 52 that communicates with the first hole portion 51 and is extended in the width direction of the apron portion 3. The second hole portion 52 is located below the first hole portion 51, and the through portion of the water passage portion 5 is formed from the first hole portion 51 and the second hole portion 52.
In cross-sectional view, the first hole portion 51 is formed to be gradually narrower toward the bottom (the opening area becomes smaller toward the bottom). In other words, the first hole 51 is expanded upward.
The upper side of the first hole 51 is located in the mounting area, and is a maximum opening whose circumference is widened in a socket shape in order to facilitate water collection. The lower side of the first hole 51 is located in the mounting area and is the smallest opening having the smallest opening area.
The plan view shape of the first hole 51 is not particularly limited, but may be a substantially rectangular shape in a plan view as shown in FIG. 1, or a substantially circular shape, a substantially elliptical shape, or the like, although not particularly shown.

第２孔部５２の上方側は、前記第１孔部５１の下方側（最小開口部）に連通されており、そこから少なくともエプロン部３の幅方向に拡張されている。
図示例では、第２孔部５２は、その上方側（第１孔部５１の最小開口部）から下方に向かうに従って、蓋部材１の幅方向及び長さ方向の何れにも拡張されている。特に、第２孔部５２の下方側は、載置領域内に位置しているが、さらに、閉塞領域の一部に延在するように幅方向に拡張されている。 The upper side of the second hole portion 52 communicates with the lower side (minimum opening) of the first hole portion 51, and is extended from there at least in the width direction of the apron portion 3.
In the illustrated example, the second hole portion 52 is expanded in both the width direction and the length direction of the lid member 1 from the upper side (minimum opening of the first hole portion 51) toward the lower side. In particular, the lower side of the second hole 52 is located in the mounting region, but is further extended in the width direction so as to extend to a part of the closed region.

通水孔部５を比較的大きな開口面積を有する直管状に形成してもよいが、そうすると載置領域中における通水孔部５の占める空間が比較的大きくなる。
この点、上記のように、通水孔部５を、下窄まりの第１孔部５１と、幅方向に拡張された第２孔部５２と、から構成することにより、第１孔部５１の占める空間は比較的小さいので載置領域の強度が低下せず、第２孔部５２を通じて水をＵ形側溝８の排水路８３へと円滑に排出できるようになる。第１孔部５１の高さは、適宜設定できるが、第１孔部５１が、第２孔部５２よりも長いことが好ましい。例えば、第１孔部５１は、エプロン部３の載置領域の厚みの１／２倍〜９／１０倍程度であり、好ましくは、エプロン部３の載置領域の厚みの３／５倍〜４／５倍である。 The water passage portion 5 may be formed in a straight tubular shape having a relatively large opening area, but then the space occupied by the water passage portion 5 in the mounting area becomes relatively large.
In this regard, as described above, the water flow hole portion 5 is composed of the first hole portion 51 of the lower constriction and the second hole portion 52 expanded in the width direction, whereby the first hole portion 51 is formed. Since the space occupied by the water is relatively small, the strength of the mounting area does not decrease, and water can be smoothly discharged to the drainage channel 83 of the U-shaped gutter 8 through the second hole 52. The height of the first hole portion 51 can be appropriately set, but it is preferable that the first hole portion 51 is longer than the second hole portion 52. For example, the first hole portion 51 is about 1/2 to 9/10 times the thickness of the mounting area of the apron portion 3, preferably 3/5 times to the thickness of the mounting region of the apron portion 3. It is 4/5 times.

通水孔部５は、１つの蓋部材１に少なくとも１つ形成されていればよく、通水孔部５の数は、蓋部材１の大きさに応じて適宜設定できる。
図示例の蓋部材１は、長さ方向に間隔を開けて、２つの通水孔部５が設けられている。 At least one water passage hole portion 5 may be formed in one lid member 1, and the number of water passage holes 5 can be appropriately set according to the size of the lid member 1.
The lid member 1 of the illustrated example is provided with two water passage holes 5 at intervals in the length direction.

エプロン部３の上面には、前記通水孔部５に水を導く導水溝部６が形成されている。導水溝部６は、エプロン部３の上面の全体的（基準面３１ａ、切下げ面３１ｂ及び段面３１ｃ）に形成されていてもよいが、好ましくは、切下げ面３１ｂに形成される。
導水溝部６は、エプロン部３の上面（特に切下げ面３１ｂ）に滞留する雨水などの水を、通水孔部５に導くために設けられている。導水溝部６は、エプロン部３の上面から凹んだ部分である。
通水孔部５は、１本だけでもよく或いは２本以上形成されていてもよいが、少なくともエプロン部３の幅方向に延びる通水孔部５を有することが好ましい。
例えば、導水溝部６は、エプロン部３の幅方向に延びる第１溝部６１と、エプロン部３の長さ方向に延びる第２溝部６２と、を有する。
第１溝部６１は、平面視で幅方向に延びる直線状に形成されており、その一方側の端部は、通水孔部５の縁に臨んでおり、その幅方向反対側の端部は、段面３１ｃに臨んでいる。第２溝部６２は、平面視で長さ方向に延びる直線状に形成されており、例えば、幅方向に２列以上形成されている。少なくとも１つの第２溝部６２は、その端部が通水孔部５の縁に臨んでおり、少なくとも１つの第２溝部６２は、第１溝部６１と部分的に交差している。 On the upper surface of the apron portion 3, a water guide groove portion 6 for guiding water to the water passage hole portion 5 is formed. The water guide groove portion 6 may be formed on the entire upper surface of the apron portion 3 (reference surface 31a, devaluation surface 31b and step surface 31c), but is preferably formed on the devaluation surface 31b.
The water guide groove portion 6 is provided to guide water such as rainwater that stays on the upper surface (particularly the devaluation surface 31b) of the apron portion 3 to the water passage hole portion 5. The water guide groove portion 6 is a portion recessed from the upper surface of the apron portion 3.
The water passage hole 5 may be formed by only one or two or more, but it is preferable to have at least the water passage portion 5 extending in the width direction of the apron portion 3.
For example, the water guide groove portion 6 has a first groove portion 61 extending in the width direction of the apron portion 3 and a second groove portion 62 extending in the length direction of the apron portion 3.
The first groove portion 61 is formed in a straight line extending in the width direction in a plan view, the end portion on one side thereof faces the edge of the water passage hole portion 5, and the end portion on the opposite side in the width direction thereof is formed. , Facing the step surface 31c. The second groove 62 is formed in a straight line extending in the length direction in a plan view, and is formed in, for example, two or more rows in the width direction. The end of at least one second groove 62 faces the edge of the water passage hole 5, and at least one second groove 62 partially intersects the first groove 61.

また、縁石部２には、エプロン部３の上面から第１側壁８１の上面側へと通水可能とする排水孔部７１が形成されている。この排水孔部７１の上方側は、エプロン部３の基準面３１ａ側に開口されており、排水孔部７１は、その開口から上下方向に延び、縁石部２の下面に開口されている。排水孔部７１も、下方に向かうに従って幅方向に拡張されている。
なお、図３の符号７２は、複数の蓋部材１を長さ方向に並べて施工する際に、隣接する蓋部材１を連結するための連結金具（図示せず）を取り付ける取り付け部を示す。 Further, the curb portion 2 is formed with a drainage hole portion 71 that allows water to pass from the upper surface of the apron portion 3 to the upper surface side of the first side wall 81. The upper side of the drainage hole portion 71 is opened on the reference surface 31a side of the apron portion 3, and the drainage hole portion 71 extends in the vertical direction from the opening and is opened on the lower surface of the curb portion 2. The drainage hole 71 is also expanded in the width direction toward the bottom.
Reference numeral 72 in FIG. 3 indicates an attachment portion to which a connecting metal fitting (not shown) for connecting adjacent lid members 1 is attached when a plurality of lid members 1 are arranged side by side in the length direction.

本発明の蓋部材１は、車道と歩道の境界部分に設けられる。特に、本発明の蓋部材１は、自転車道と歩道の境界部分に設けられる。
図９及び図１０は、本発明のコンクリート製蓋部材１をＵ形側溝８の上に載置した路肩構造物を示す。
前記路肩構造物は、例えば、自転車道と歩道の境界部分にＵ形側溝を埋設し、そのＵ形側溝の上に蓋部材を載置し、歩道側の舗装及び自転車道側の舗装を行うことによって構築される。
本発明の蓋部材１は、既存の道路を改修して路肩構造物を構築する場合に使用してもよく、或いは、新規に路肩構造物を構築する場合に使用してもよい。また、構築される路肩構造物は、既存の道路に敷設されているＵ形側溝を再利用してもよく、或いは、新規にＵ形側溝を敷設してもよい。
好ましくは、本発明の蓋部材１は、既存の道路（例えば、自転車道を有さない、歩道と自動車道からなる道路）を改修し、敷設されているＵ形側溝を利用しつつ自転車道と歩道を有する路肩構造物を構築する際に用いられる。
例えば、歩道と自動車道の境界部分に蓋付きＵ形側溝８が埋設されている既存の道路を改修する場合、図１１に示すように、その歩道側の舗装及び自動車道側の舗装を引き剥がすと共に、蓋を外してＵ形側溝８の上方開口部を露出させる。
次に、Ｕ形側溝８の上に本発明の蓋部材１を載置し、栗石などの路盤材を充填して地均しをした後、歩道舗装及び自転車道舗装を行うことにより、路肩構造物を構築できる。 The lid member 1 of the present invention is provided at a boundary portion between a roadway and a sidewalk. In particular, the lid member 1 of the present invention is provided at the boundary between the bicycle path and the sidewalk.
9 and 10 show a road shoulder structure in which the concrete lid member 1 of the present invention is placed on the U-shaped gutter 8.
In the road shoulder structure, for example, a U-shaped gutter is embedded in the boundary portion between the bicycle path and the sidewalk, a lid member is placed on the U-shaped gutter, and the sidewalk side pavement and the bicycle path side pavement are performed. Constructed by.
The lid member 1 of the present invention may be used when the existing road is repaired to construct a road shoulder structure, or may be used when a new road shoulder structure is constructed. Further, as the road shoulder structure to be constructed, the U-shaped gutter laid on the existing road may be reused, or a new U-shaped gutter may be laid.
Preferably, the lid member 1 of the present invention is used as a bicycle path by modifying an existing road (for example, a road having no bicycle path and consisting of a sidewalk and a motorway) and utilizing a U-shaped gutter laid. It is used when constructing a road shoulder structure with a sidewalk.
For example, when repairing an existing road in which a U-shaped gutter 8 with a lid is buried at the boundary between the sidewalk and the motorway, the pavement on the sidewalk side and the pavement on the motorway side are peeled off as shown in FIG. At the same time, the lid is removed to expose the upper opening of the U-shaped gutter 8.
Next, the lid member 1 of the present invention is placed on the U-shaped gutter 8, filled with a roadbed material such as chestnut stone, and leveled, and then sidewalk pavement and bicycle path pavement are performed to form a road shoulder structure. You can build things.

図９及び図１０を参照して、前記路肩構造物は、自転車道などの車道と歩道の境界部分に埋設されたＵ形側溝８と、前記Ｕ形側溝８の上方開口部を塞ぐように第１側壁８１及び第２側壁８２の上面に載置されたコンクリート製蓋部材１と、縁石部２に一方側に接して形成された歩道舗装部９１と、縁石部２の反対側の近傍に形成された自転車道舗装部９２（車道舗装部９２）と、を有する。
蓋部材１の縁石部２が、Ｕ形側溝８の第１側壁８１の上面に載置され、蓋部材１のエプロン部３の載置領域が、Ｕ形側溝８の第２側壁８２の上面に載置され、蓋部材１の閉塞領域が、Ｕ形側溝８の上方開口部を閉塞している。排水孔部７１の下方側は、Ｕ形側溝８の第１側壁８１の上面から上方開口部の一部分にかけて開口している。また、通水孔部５は、Ｕ形側溝８の第２側壁８２の上に位置しており、通水孔部５の第２孔部５２の下方側は、Ｕ形側溝８の第２側壁８２の上面から上方開口部の一部分にかけて開口している。
自転車道舗装部９２は、エプロン部３の段面３１ｃから切下げ面３１ｂ上に形成されていると共に、さらに、エプロン部３を越えて形成されている。なお、特に図示しないが、自転車道舗装部９２の端部に連続して、アスファルトなどを用いて自動車道舗装部が形成される。
自転車道舗装部９２は、透水性を有する透水性舗装である。このような透水性舗装は、微細な隙間を有するアスファルト塗装などが挙げられる。
また、自転車道舗装部９２の上面は、水平面であってもよいが、舗装に降った雨水などが排水孔部７１に流れ込み易くなることから、一方側から幅方向反対側に下向きで僅かに傾斜した傾斜面とされている。この自転車道舗装部９２の傾斜した上面は、エプロン部３の傾斜した基準面３１ａと連続して傾斜面を構成することが好ましい。例えば、自転車道舗装部９２の上面とエプロン部３の基準面３１ａは、両者を併せて１つの傾斜面とされており、その傾斜角度は、上記基準面３１ａで説明したような水勾配程度でよい。 With reference to FIGS. 9 and 10, the road shoulder structure has a U-shaped gutter 8 embedded in a boundary portion between a roadway such as a bicycle road and a sidewalk, and a th-order structure so as to close an upper opening of the U-shaped gutter 8. A concrete lid member 1 placed on the upper surfaces of the first side wall 81 and the second side wall 82, a sidewalk pavement portion 91 formed in contact with the curb portion 2 on one side, and formed in the vicinity of the opposite side of the curb portion 2. It has a bicycle road pavement portion 92 (carriageway pavement portion 92).
The curb portion 2 of the lid member 1 is placed on the upper surface of the first side wall 81 of the U-shaped gutter 8, and the mounting area of the apron portion 3 of the lid member 1 is placed on the upper surface of the second side wall 82 of the U-shaped gutter 8. It is placed and the closed region of the lid member 1 closes the upper opening of the U-shaped gutter 8. The lower side of the drainage hole 71 is open from the upper surface of the first side wall 81 of the U-shaped gutter 8 to a part of the upper opening. The water passage hole 5 is located above the second side wall 82 of the U-shaped gutter 8, and the lower side of the second hole 52 of the water passage 5 is the second side wall of the U-shaped gutter 8. There is an opening from the upper surface of the 82 to a part of the upper opening.
The bicycle path pavement portion 92 is formed on the devaluation surface 31b from the step surface 31c of the apron portion 3, and is further formed beyond the apron portion 3. Although not particularly shown, a motorway pavement portion is formed by using asphalt or the like continuously at the end portion of the bicycle path pavement portion 92.
The bicycle path pavement portion 92 is a permeable pavement having water permeability. Examples of such permeable pavement include asphalt coating having fine gaps.
Further, the upper surface of the bicycle path pavement portion 92 may be a horizontal surface, but since rainwater or the like that has fallen on the pavement easily flows into the drainage hole portion 71, it is slightly inclined downward from one side to the opposite side in the width direction. It is said to be an inclined surface. It is preferable that the inclined upper surface of the bicycle path pavement portion 92 constitutes an inclined surface continuous with the inclined reference surface 31a of the apron portion 3. For example, the upper surface of the bicycle path pavement portion 92 and the reference surface 31a of the apron portion 3 are combined into one inclined surface, and the inclination angle is about the water gradient as described in the reference surface 31a. good.

本発明のコンクリート製蓋部材１は、エプロン部３に通水孔部５が形成されているので、透水性の車道舗装部９２からエプロン部３の切下げ面３１ｂに浸透した水は、通水孔部５を通じてＵ形側溝８の排水路８３に流れるようになる。
特に、切下げ面３１ｂには通水孔部５に水を導く導水溝部６が形成されているので、浸透した水がエプロン部３の切下げ面３１ｂ上に滞留し難く、通水孔部５へ円滑に導かれてＵ形側溝８の排水路８３へと流れていくようになる。
本発明においは、前記通水孔部５が、Ｕ形側溝８の第２側壁８２に載置される載置領域に形成されているので、蓋部材１の上から荷重や振動が長期間加わっても、通水孔部５の近辺から蓋部材１が破損することを防止できる。つまり、蓋部材１をＵ形側溝８上に載せたときには、蓋部材１の載置領域の下方にはＵ形側溝８の第２側壁８２が存在するので、載置領域に通水孔部５を形成していてもその通水孔部５の近辺から蓋部材１が破損することを効果的に防止できる。 Since the concrete lid member 1 of the present invention has a water passage hole 5 formed in the apron portion 3, water that has permeated from the water-permeable roadway pavement portion 92 to the cut-down surface 31b of the apron portion 3 has a water passage hole. It flows into the drainage channel 83 of the U-shaped gutter 8 through the portion 5.
In particular, since the cut-down surface 31b is formed with a water guide groove portion 6 for guiding water to the water passage hole portion 5, the permeated water is unlikely to stay on the cut-down surface 31b of the apron portion 3 and smoothly reaches the water passage hole portion 5. Guided by, it flows into the drainage channel 83 of the U-shaped gutter 8.
In the present invention, since the water passage hole 5 is formed in the mounting region to be mounted on the second side wall 82 of the U-shaped gutter 8, a load or vibration is applied from above the lid member 1 for a long period of time. However, it is possible to prevent the lid member 1 from being damaged from the vicinity of the water passage portion 5. That is, when the lid member 1 is placed on the U-shaped gutter 8, the second side wall 82 of the U-shaped gutter 8 exists below the mounting area of the lid member 1, so that the water passage portion 5 is provided in the mounting area. It is possible to effectively prevent the lid member 1 from being damaged from the vicinity of the water passage hole portion 5 even if the lid member 1 is formed.

さらに、通水孔部５は、下方に向かって次第に窄んだ第１孔部５１と、エプロン部３の幅方向に拡張された第２孔部５２と、を有するので、エプロン部３の切下げ面３１ｂの水が第１孔部５１に入り込み易く、第１孔部５１に入った水は、第２孔部５２から排水路８３へと円滑に排出されるようになる。
また、導水溝部６は幅方向に延びるので、切下げ面３１ｂ上に形成される車道舗装部９２に歪みが生じ難くなる。すなわち、一般に道路の舗装は、長さ方向に自転車や自動車が走行するので、幅方向に応力が加わり易いが、導水溝部６が幅方向に延在されていることにより、車道舗装部９２に歪みが生じ難くなる。 Further, since the water passage portion 5 has a first hole portion 51 that is gradually narrowed downward and a second hole portion 52 that is expanded in the width direction of the apron portion 3, the apron portion 3 is devaluated. The water on the surface 31b easily enters the first hole 51, and the water that has entered the first hole 51 is smoothly discharged from the second hole 52 to the drainage channel 83.
Further, since the headrace groove portion 6 extends in the width direction, the roadway pavement portion 92 formed on the devaluation surface 31b is less likely to be distorted. That is, in general, since a bicycle or an automobile travels in the length direction of the road pavement, stress is likely to be applied in the width direction, but the roadway pavement portion 92 is distorted due to the extension of the headrace groove 6 in the width direction. Is less likely to occur.

［第２実施形態］
第２実施形態は、別途の縁石を載置する形式のコンクリート製蓋部材に関する。換言すると、第２実施形態のコンクリート製蓋部材は、別途の縁石を載置するための縁石土台部とエプロン部が一体的に形成されている。
本実施形態の蓋部材は、第１実施形態の縁石部のうち縁石に相当する部分（エプロン部の基準面よりも突出している部分）を有さない点で、上記第１実施形態と異なっている。
以下、本発明の第２実施形態を説明するが、その説明に於いては、主として上述の第１実施形態と異なる構成について説明し、同様の構成及び効果については、用語又は符号をそのまま援用し、その説明を省略する場合がある。 [Second Embodiment]
The second embodiment relates to a concrete lid member in which a separate curb is placed. In other words, in the concrete lid member of the second embodiment, a curb base portion and an apron portion for placing a separate curb stone are integrally formed.
The lid member of the present embodiment is different from the first embodiment in that it does not have a portion corresponding to the curb (a portion protruding from the reference surface of the apron portion) of the curb portion of the first embodiment. There is.
Hereinafter, the second embodiment of the present invention will be described. In the description thereof, a configuration different from the above-described first embodiment will be mainly described, and terms or symbols are used as they are for the same configuration and effect. , The explanation may be omitted.

図１２は、第２実施形態のコンクリート製蓋部材の正面図、図１３は、同蓋部材の幅方向における断面図（第２実施形態の蓋部材を図１のＶＩＩ−ＶＩＩ線と同様の箇所で切断）である。図１２及び図１３では、便宜上、Ｕ形側溝を二点鎖線で併記している。
図１２及び図１３において、本実施形態のコンクリート製蓋部材１は、縁石土台部２１と、エプロン部３と、を有し、前記縁石土台部２１及びエプロン部３がコンクリートにて一体的に成形されている。
縁石土台部２１の下面は、Ｕ形側溝８の第１側壁８１の上面に載置される部分である。縁石土台部２１の下面は、略平坦状でもよいが、上記第１実施形態と同様に、Ｕ形側溝８の第１側壁８１の上面に接する下座面２ａと、その下座面２ａよりも少し上方に位置する上座面２ｂと、からなる。
縁石土台部２１の上面は、別途の縁石を載せる載置面である。縁石土台部２１の上面は、例えば、縁石の基部が嵌まり込むように、凹状に形成されている。もっとも、縁石土台部２１の上面に縁石を載せることができればよいので、縁石土台部２１の上面は、略平坦状などに形成されていてもよい。
縁石部を有さない本実施形態では、排水孔部７１の上方側は、エプロン部３の基準面３１ａに形成されている。
第２実施形態の蓋部材の他の構成は、上記第１実施形態と同様であるため、その説明を省略する。なお、第２実施形態の蓋部材の平面図、底面図、側面図などは、縁石部２が縁石土台部２１になっている点及び排水孔部７１の上方側が基準面３１ａに形成されている点を除いて同様であるため、それらは図示しない。 FIG. 12 is a front view of the concrete lid member of the second embodiment, and FIG. 13 is a cross-sectional view of the lid member in the width direction (the lid member of the second embodiment is the same as the line VII-VII of FIG. 1). (Cut with). In FIGS. 12 and 13, for convenience, U-shaped gutters are also shown by alternate long and short dash lines.
In FIGS. 12 and 13, the concrete lid member 1 of the present embodiment has a curb base portion 21 and an apron portion 3, and the curb base portion 21 and the apron portion 3 are integrally formed of concrete. Has been done.
The lower surface of the curb base portion 21 is a portion placed on the upper surface of the first side wall 81 of the U-shaped gutter 8. The lower surface of the curb base portion 21 may be substantially flat, but as in the first embodiment, the lower seat surface 2a in contact with the upper surface of the first side wall 81 of the U-shaped gutter 8 and the lower seat surface 2a thereof. It consists of an upper seat surface 2b located slightly above.
The upper surface of the curb base portion 21 is a mounting surface on which a separate curb is placed. The upper surface of the curb base portion 21 is formed in a concave shape so that, for example, the base of the curb is fitted. However, since it is sufficient that the curbstone can be placed on the upper surface of the curb base portion 21, the upper surface of the curb base portion 21 may be formed in a substantially flat shape or the like.
In the present embodiment having no curb portion, the upper side of the drainage hole portion 71 is formed on the reference surface 31a of the apron portion 3.
Since the other configurations of the lid member of the second embodiment are the same as those of the first embodiment, the description thereof will be omitted. In the plan view, bottom view, side view and the like of the lid member of the second embodiment, the point where the curb portion 2 is the curb base portion 21 and the upper side of the drainage hole portion 71 are formed on the reference surface 31a. They are not shown as they are similar except for the points.

図１４は、第２実施形態のコンクリート製蓋部材１をＵ形側溝８の上に載置した路肩構造物を示す。
本実施形態の蓋部材１は、縁石土台部２１上に別途の縁石９を載置して路肩構造物を構築する点において上記第１実施形態と異なっており、その余は同様である。
本実施形態の蓋部材１も、上記第１実施形態と同様に、既存の道路の改修に用いることもでき、排水性及び耐久性に優れているものである。 FIG. 14 shows a road shoulder structure in which the concrete lid member 1 of the second embodiment is placed on the U-shaped gutter 8.
The lid member 1 of the present embodiment is different from the first embodiment in that a separate curb 9 is placed on the curb base portion 21 to construct a road shoulder structure, and the rest is the same.
The lid member 1 of the present embodiment can also be used for repairing an existing road as in the first embodiment, and is excellent in drainage and durability.

１コンクリート製蓋部材
２縁石部
３エプロン部
５通水孔部
５１第１孔部
５２第２孔部
６導水溝部
８Ｕ形側溝
８１第１側壁
８２第２側壁
８３排水路 1 Concrete lid member 2 Curb part 3 Apron part 5 Water flow hole part 51 1st hole part 52 2nd hole part 6 Water guide groove part 8 U-shaped gutter 81 1st side wall 82 2nd side wall 83 Drainage channel

Claims

In a concrete lid member placed in a U-shaped gutter provided at a boundary between a roadway and a sidewalk and having a drainage channel formed between the first side wall and the second side wall.
A curb portion or a curb pedestal portion mounted on the upper surface of the first side wall of the U-shaped gutter, a mounting region mounted on the upper surface of the second side wall of the U-shaped gutter, and an upper opening of the U-shaped gutter. It has an apron portion having a closed area for closing the portion, and the curb portion or the curb pedestal portion and the apron portion are integrally formed of concrete.
A water passage hole portion is formed in the upper surface of the mounting area of the apron portion so as to penetrate in the vertical direction and allow water to pass from the upper surface of the second side wall to the drainage channel .
The apron portion of the apron portion so that the water passage portion communicates with the first hole portion extending in the vertical direction and the lower end of the first hole portion and extends from the previously described placement region to a part of the closed region. A concrete lid member for a U-shaped gutter having a second hole portion expanded in the width direction.

The concrete lid member for a U-shaped gutter according to claim 1, wherein a water guide groove portion for guiding water to the water passage hole portion is formed on the upper surface of the apron portion.

The concrete lid member for a U-shaped gutter according to claim 1 or 2, wherein the first hole portion has a shape gradually narrowed downward.