JP3909112B2 - Road structure - Google Patents

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JP3909112B2
JP3909112B2 JP07689597A JP7689597A JP3909112B2 JP 3909112 B2 JP3909112 B2 JP 3909112B2 JP 07689597 A JP07689597 A JP 07689597A JP 7689597 A JP7689597 A JP 7689597A JP 3909112 B2 JP3909112 B2 JP 3909112B2
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road
permeable
sidewalk
crushed stone
roadway
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邦男 金子
文雄 内山
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藤村ヒューム管株式会社
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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
    • 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
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/40—Protecting water resources

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Description

【０００１】
【発明の属する技術分野】
本発明は、透水性ブロックを用いて舗装した歩道、又は透水性舗装の歩道、透水性舗装の車道等の上に、多量に降って浸透する雨水を効率よく側溝に導き、歩道や車道上に雨水が溢れない道路構造に関する。
【０００２】
【従来の技術】
従来の道路構造は図１３〜図１６示したような構造であり、歩道１上に降った雨水Ｒ１は、透水性ブロック１１又は透水性舗装２１を通過後、砕石層１３を通過して歩道側地盤１４の地下に浸透する。なお、前記透水性舗装２１は、直径５ｍｍ程度に統一した粗い粒子をセメントペーストや接着剤で固めたもので、水を浸透する舗装をいう。
また、車道２は、道路構造上礫混じり土で路床２４を形成し、その上部に砕石層等の地盤２２を強固に転圧する。そして、転圧後に透水性舗装２１を道路表面に３ｃｍ〜５ｃｍ程度の厚さで２％程度の勾配に施工している。そして、車道２上の雨水Ｒは、透水性舗装２１内部の空隙部を通過しながら道路勾配なりに車道側側溝５の上縁から該側溝内にに到達させる。
なお、雨水Ｒは車道側側溝５の上縁をオーバーフローさせ、直接道路端車道側側溝５に流れを導く方法が取られている。
【０００３】
【発明が解決しようとする課題】
▲１▼降水量が多い場合歩道１上の雨水Ｒ１は、地下への浸透機能を越えると透水性ブロック１１上（透水性舗装上）に溢れ出し、歩道１の勾配に沿って流れ出し、縁石ブロック３又は道路用Ｌ型側溝４の天端４１を越えて車道側側溝５、歩道側側溝６に流出する。その際に雨水Ｒ、Ｒ１は歩道１や車道２に溢れるため、歩行者の歩行の障害となっている。
また、図１４のように、歩道１上に突出部付縁石ブロック４を配置した場合は、該縁石ブロック４を回り込むように縁石ブロックと縁石ブロックの間を通過して矢印で示したように車道側側溝５に流れる（図１５参照）。さらに、歩道１上に窪部がある場合は水溜まりが出来るため、歩行者の歩行の障害になるという問題点がある。
▲２▼従来の透水性ブロック１１又は透水性舗装２１を施した歩道１は、雨水を地下に浸透させる事が主目的であるため、梅雨時で長雨時等のような降水量が多い場合には縁石ブロック、車道側側溝５及び歩道側側溝６、道路用Ｌ型側溝７等の各種構造物の下部に浸透水が回り込み、その結果構造物の下の地盤１４、２２を軟弱にし、その構造物の沈下や蛇行を助長する。
▲３▼車道２上の雨水Ｒは、降水量が多くなると透水性舗装２１の空隙部では処理出来ないため、道路上に溢れ、更に、道路勾配なりに側溝に流出する。この時既に透水性舗装としての透水機能を失い、透水機能のない舗装道路と同じくなる。その結果、走行車両ではハイドロブレーニング現象、スモーキング現象、水跳ね、光の反射による視界の現象等の現象が発生し、ドライバーは安全運転が阻害され、道路を歩く歩行者にも損害を生じさせることになるという問題点がある。
【０００４】
そこで、本発明はこのような問題点に鑑みてなされたもので、歩道や車道上に多量に降った雨水を効率よく車道端の車道側側溝や歩道端の歩道側側溝に導き、歩道や車道上に雨水が溢れないようにする道路構造の提供を目的としている。
【０００５】
【課題を解決するための手段】
上記技術的課題を解決する手段として、請求項１の発明に係る道路構造は、
路床２４上に不透水層２３を設け、該不透水層２３上に透水性舗装２１を設けて形成した車道２と、上端部に透水部Ｐを設けた該車道２の端に沿って配設される車道側側溝５とから構成される道路構造において、
前記路床２４上に砕石層地盤２２を設けると共に該砕石層地盤２２上に前記不透水層２３を設け、前記透水部Ｐは、車道２の透水性舗装２１を浸透した雨水Ｒｌが流入するように該透水性舗装２１位置に配設したことを特徴とする道路構造。
請求項２の発明は、請求項１に記載の道路構造において、
車道側側溝５は、底版部を開放にした断面門型に形成したものにおいて、片側側壁上端に多孔質透水部３１を設けたことを特徴としている。
請求項３の発明は、請求項１に記載の道路構造において、
車道側側溝５は、断面Ｕ字形に形成すると共に、片側側壁上端に多孔質透水部３１を設けたことを特徴としている。
請求項４の発明は、請求項１に記載の道路構造において、
車道側側溝５は、断面Ｕ字形に形成すると共に、片側側壁上端に切欠溝５１を設けたことを特徴としている。
請求項５の発明は、請求項１に記載の道路構造において、
車道側側溝５は、暗渠型に形成すると共に、片側側璧上端に多孔質透水部３１を設けたことを特徴としている。
請求項６の発明は、請求項１に記載の道路構造において、
車道側側溝５は、暗渠型に形成すると共に、片側側壁上端に切欠溝５１を設けたことを特徴としている。
請求項７の発明は、請求項１に記載の道路構造において、
開口部には該車道側側溝５の接続方向に沿って上面に凹状窪み５６を設けた側溝蓋５４を配置した車道側側溝５において、透水性舗装２１と不透水層２３の境目高さ位置に車道側側溝５の上端を配置したことを特徴としている。
【０００６】
請求項８の発明に係る道路構造は、
車道２の端に沿って車道側側溝５を配置すると共に該車道側側溝５に隣接させて透水部Ｐを設けた縁石ブロック３を配置し、かつ該縁石ブロック３を介して歩道１を施工した道路において、前記歩道１は、歩道側地盤１４上に順に、砕石層１３、砂層１２、透水性ブロック１１を設けて形成し、前記縁石ブロック３の透水部Ｐは砕石層１３高さ位置に設け、前記透水性ブロック１１を浸透した雨水Ｒ２が車道側側溝５に流入するように該車道側側溝５の上縁位置に縁石ブロック３の透水部Ｐを配設したことを特徴としている。
請求項９の発明は、請求項８に記載の道路構造において、
透水部Ｐは、多孔質透水部３１であることを特徴としている。
請求項１０の発明は、請求項８に記載の道路構造において、
縁石ブロック３は、歩道１の砕石層１３位置の高さ位置に透水孔３２を設けたことを特徴としている。
請求項１１の発明は、請求項８に記載の道路構造において、
縁石ブロック３は、歩道１の砕石層１３位置の高さ位置に多孔質透水部３１を設けたことを特徴としている。
請求項１２の発明は、請求項８に記載の道路構造において、
縁石ブロック３は、歩道１側下端に突出部３５を設け、歩道１の砕石層１３高さ位置に透水孔３２を設けたことを特徴としている。
請求項１３の発明は、請求項８に記載の道路構造において、
縁石ブロック３は、歩道１側下端に突出部３５を設け、歩道１の砕石層１３の高さ位置に多孔質透水部３１を設けたことを特徴としている。
請求項１４の発明は、請求項８に記載の道路構造において、
歩道１は、透水性ブロックの代わりに透水性舗装２１を形成し、該透水性舗装２１の高さ位置に縁石ブロック３の透水部Ｐを設けたことを特徴としている。
【０００７】
請求項１５の発明に係る道路構造は、
歩道１の端に沿って透水部を設けた側溝６を配置した道路において、前記歩道１は、歩道側地盤１４上に順に、砕石層１３、砂層１２、透水性ブロック１１を設けて形成し、前記側溝６には、砕石層１３とほぼ同じ高さ位置に透水部Ｐを設け、前記歩道１の砕石層１３位置に側溝６の透水部Ｐを配設したことを特徴としている。
請求項１６の発明は、請求項１５に記載の道路構造において、
歩道１には、透水性ブロック１１の代わりに透水性舗装２１を設け、側溝６には、その上縁位置に透水部Ｐを設けてなり、該透水性舗装２１位置に側溝６の透水部Ｐを配設したことを特徴としている。
【０００８】
請求項１７の発明に係る道路構造は、
歩道１と車道２の境界付近に、歩道１側に起立部４１を設けた道路用Ｌ型側溝４を配設した道路において、前記歩道１は上から順に、透水性ブロック１１、砂層１２、砕石層１３の順に形成し、前記車道２は路床２４上に順に、砕石層２２、透水性舗装２１を設け、前記道路用Ｌ型側溝４の起立部４１には、砕石層１３とほぼ同じ高さ位置に透水部Ｐを設け、歩道１の砕石層１３を浸透した雨水Ｒ２と車道２の透水性舗装２１を浸透した雨水Ｒｌが道路用Ｌ型側溝４の溝４２内に流入できるように、道路用Ｌ型側溝４の透水部Ｐを砕石層１３位置に配設すると共に、道路用Ｌ型側溝４の上縁を車道２の透水性舗装２１より下に配設したことを特徴としている。
【０００９】
【発明の実施の態様】
本発明の実施の態様を図面に基いて説明する。本発明の第１の発明に係る道路構造は、図１において、車道２は、路床２４上に砕石層地盤２２を設けると共に該砕石層地盤２２上に不透水層２３を設け、かつ該不透水層２３上に透水性舗装２１を設けて形成されている。
前記車道２の端に沿って配設される車道側側溝５は、その上端部に透水部Ｐが設けられている。また、前記透水部Ｐは、車道２の透水性舗装２１を浸透した雨水Ｒ１が流入するように該透水性舗装２１位置に配設されている。
また、前記車道側側溝５は、図２のように、底版部を開放にした断面門型に形成すると共に、片側側壁上端には、例えばポーラスコンクリート等を用いて形成した多孔質透水部３１を設けてもよく、又図１８のように切欠溝５１を設けてもよい。
更に、前記車道側側溝５は、図３のように、断面Ｕ字形に形成すると共に、片側側壁上端に多孔質透水部３１を設けてもよく、又図１９のように切欠溝５１を設けてもよい。また、図２０ＡのようにＵ形側溝５の一方側側壁上端部に多孔質透水部３１を設けると共に、他方側側壁上端部に透水孔３２を、同図ＢのようにＵ形側溝５の一方側側壁上端部に切欠溝５１を設けると共に、他方側側壁上端部に多孔質透水部３１を、同図ＣのようにＵ形側溝５の両側壁上端部に切欠溝５１を設けてもよい。更に、同図ＤのようにＵ形側溝５の一方側側壁上端部に切欠溝５１を設けると共に、他方側側壁上端部に透水孔３２を設けてもよい。
また、前記車道側側溝５は、図４のように、暗渠型に形成すると共に、所定側壁上端に多孔質透水部３１を設けてもよく、又図２０Ｃのように切欠溝５１を設けてもよい。
また、第１の発明の道路構造は、図５のように、透水性舗装２１と不透水層２３の境目高さ位置に車道側側溝５の上端を配置し、車道側側溝５の開口部には該車道側側溝５の接続方向に沿って上面に凹状窪み５６を設けた側溝蓋54が配置されている。
【００１０】
次に、第２の発明の道路構造は、図６のように、車道２の端に沿って車道側側溝５を配置すると共に該車道側側溝５に隣接させて縁石ブロック３を配置し、かつ該縁石ブロック３介して歩道１を施工した道路である。また、前記歩道１は、歩道側地盤１４上に順に、砕石層１３、砂層１２、透水性ブロック１１を設けて形成し、前記縁石ブロック３には、砕石層１３高さ位置に透水部Ｐを設けてなり、透水性ブロック１１を浸透した雨水Ｒ２が車道側側溝５に流入するように該車道側側溝５の上縁位置に縁石ブロック３の透水部Ｐが配設されている。
第２の発明の透水部Ｐは、図７のように、多孔質透水部３１としてもよい。
更に、第２の発明の縁石ブロック３は、図２１、２２のように、歩道１の砕石層１３位置の高さ位置に透水部Ｐとして透水孔３２を設けてもよく、又多孔質透水部３１を設けてもよい。
また、前記第２の発明の縁石ブロック３は、図８のように、歩道１側下端に突出部35を設け、歩道１の砕石層１３高さ位置に透水孔３２を設けてもよく、又多孔質透水部３１を設けてもよい。
更に、前記第２の発明の歩道１は、図９のように、透水性ブロックの代わりに透水性舗装２１を形成し、該透水性舗装２１の高さ位置に縁石ブロック３の透水部Ｐを設けてもよい。
前記透水部Ｐは、図２１、図２２のＡのように多孔質透水部３１を起立部４１のほぼ中間高さ位置にサンドイッチ状に水平に設けてもよく、同図Ｂのように多孔質透水部３１を所定間隔で水平に設けてもよい。また、Ｃのように多孔質透水部３１をほぼ中央の中間高さ位置に設けるか、起立部４１の上端部全面に多孔質透水部３１を設けてもよい。更には、Ａの多孔質透水部３１の代わりに透水孔３２を水平に設けてもよい。
【００１１】
更に、第３の発明の道路構造は、図１０のように、歩道１の端に沿って側溝６を配置させて形成した道路において、歩道１は、歩道側地盤１４上に順に、砕石層１３、砂層１２、透水性ブロック１１を設けて形成し、側溝６には、砕石層１３とほぼ同じ高さ位置に透水部Ｐを設け、前記歩道１の砕石層１３位置に側溝６の透水部Ｐが配設されている。
また、前記第３の発明の歩道１には、図１１のように、透水性ブロック１１の代わりに透水性舗装２１を設け、側溝６には、その上縁位置に透水部Ｐを設けてなり、該透水性舗装２１位置に側溝６の透水部Ｐを配設してもよい。
【００１２】
また、第４の発明の道路構造は、主に、溝４２内の貯水量が比較的少ない公園内の道路や商店街等のに適用される道路構造に関するものである。図１２のように、歩道１と車道２の境界付近に、歩道１側に起立部４１を設けた道路用Ｌ型側溝４を配設した道路において、前記歩道１は上から順に、透水性ブロック１１、砂層１２、砕石層１３の順に形成し、前記車道２は路床２４上に順に、砕石層２２、透水性舗装２１を設け、前記道路用Ｌ型側溝４の起立部４１には、砕石層１３とほぼ同じ高さ位置に透水部Ｐを設け、歩道１の砕石層１３を浸透した雨水Ｒ２と車道２の透水性舗装２１を浸透した雨水Ｒ１が道路用Ｌ型側溝４の溝42内に流入できるように、道路用Ｌ型側溝４の透水部Ｐを砕石層１３位置に配設すると共に、道路用Ｌ型側溝４の上縁を車道２の透水性舗装２１より下に配設されている。
なお、透水部Ｐは、図２３のＡのように多孔質透水部３１を起立部４１のほぼ中間高さ位置にサンドイッチ状に水平に設けてもよく、同図Ｂのように多孔質透水部３１を所定間隔で水平に設けてもよい。また、Ｃのように多孔質透水部３１をほぼ中央の中間高さ位置に設けるか、起立部４１の上端部全面に多孔質透水部３１を設けてもよい。更には、Ａの多孔質透水部３１の代わりに透水孔３２を水平に設けてもよい。
【００１３】
【発明の効果】
本発明は上述の通り構成されているので、次に記載する効果を奏する。
(1)歩道や車道上に降った雨水は、適宜、歩道や車道下の透水性ブロック、透水性舗装、砕石層を浸透し、かつこれらの層と連通するように配設した歩道端の歩道側側溝及び車道端の車道側側溝に流れ込む。従って、道路上に雨水が多量に降っても連続して浸透し、かつ効率よく歩道端の歩道側側溝及び車道端の車道側側溝に流れ込むため、道路上に多量に降った雨水は歩道や車道上にあふれることがない。よって、雨水が道路や車道に溢れることがないので歩行者の歩行障害とならず、車両の走行障害にもならない。
(2)歩道及び車道の雨水は、適宜、歩道や車道下の透水性ブロック、透水性舗装、砕石層を浸透してこれと連通するように配置した歩道端の歩道側側溝及び車道端の車道側側溝に流れ込み、従って、道路上の雨水は連続して浸透し、効率よく歩道端の歩道側側溝及び車道端の車道側側溝に流れ込むため、歩道や車道上に溢れることが回避できる。
特に、梅雨時の長雨時等のように降水量が多い場合は、縁石ブロック、車道端及び歩道端の側溝、道路用Ｌ型側溝等の各種構造物の下部への浸透水の回り込みがなくなる。その結果構造物の下の地盤を軟弱にしたり、その構造物の沈下や蛇行を助長することがない。従って、道路構造物の沈下，蛇行が防止できる。
(3)道路に溜まった又は溢れた水は、効率よく歩道端の歩道側側溝及び車道端の車道側側溝に流れ込み、歩道や車道上に溢れることがほとんどないため、走行中の車両の車輪内に侵入して車輪が空回りするハイドロブレーニング現象が防止でき、又車両の走行時後方に水が霧状に舞い上がり、後続車の視界を悪くさせるスモーキング現象が防止できる。更に、水跳ね・光の反射により発生する視界の悪化も防止できる。
【図面の簡単な説明】
【図１】 本発明の車道と側溝の説明図。
【図２】 本発明の門型側溝の斜視図。
【図３】 本発明のＵ字型側溝の斜視図。
【図４】 本発明の暗渠型側溝の正面図。
【図５】 本発明の道路構造の説明図。
【図６】 本発明の道路構造の説明図。
【図７】 本発明の道路構造の説明図。
【図８】 本発明の道路構造の説明図。
【図９】 本発明の道路構造の説明図。
【図１０】本発明の道路構造の説明図。
【図１１】本発明の道路構造の説明図。
【図１２】本発明の道路用Ｌ型側溝を使用した道路構造の説明図。
【図１３】従来の道路構造の説明図。
【図１４】従来の道路構造の説明図。
【図１５】図１５の道路構造の平面図。
【図１６】従来の道路用Ｌ型側溝を使用した道路構造の説明図。
【図１７】Ａ、Ｂ、Ｃは側壁上端部に透水部を設けた門型側溝の斜視図。
【図１８】側壁上端に透水部を設けた門型側溝の斜視図。
【図１９】Ａ、ＢはＵ字形側溝の斜視図。
【図２０】Ａ、Ｂ、Ｃ、Ｄ、Ｅは両側壁上端に透水部を設けたＵ字形側溝の斜視図。
【図２１】Ａ、Ｂ、Ｃ、Ｄ、Ｅは透水部を設けた縁石ブロックの斜視図。
【図２２】Ａ、Ｂ、Ｃ、Ｄ、Ｅは透水部を設けた縁石ブロックの斜視図。
【図２３】Ａ、Ｂ、Ｃ、Ｄ、Ｅは透水部を設けた道路用Ｌ型側溝の斜視図。
【符号の説明】
１ 歩道
１１ 透水性ブロック
１２ 砂層
１３ 砕石層
１４ 歩道側地盤
２ 車道
２１ 透水性舗装
２２ 砕石地盤
２３ 不透水層
２４ 路床
３ 縁石ブロック
Ｐ 透水部
３１ 多孔質透水部
３２ 透水孔
３５ 突出部
４ 道路用Ｌ型側溝
４１ 起立部
４２ 溝
５ 車道側側溝
５１ 切欠溝
５４ 側溝蓋
５６ 窪み
６ 歩道側側溝[0001]
BACKGROUND OF THE INVENTION
The present invention efficiently guides rainwater penetrating a large amount of rainwater on a sidewalk paved with a water-permeable block, or on a water-permeable pavement, a roadway with a water-permeable pavement, etc. It relates to road structures that do not overflow with rainwater.
[0002]
[Prior art]
The conventional road structure is a structure as shown in FIGS. 13 to 16, and rainwater R1 that has fallen on the sidewalk 1 passes through the permeable block 11 or the permeable pavement 21 and then passes through the crushed stone layer 13 to the side of the sidewalk. It penetrates underground of the ground 14 The water-permeable pavement 21 is a pavement in which coarse particles unified to have a diameter of about 5 mm are solidified with cement paste or an adhesive and permeate water.
In addition, the roadway 2 forms a roadbed 24 with soil mixed with gravel due to the road structure, and the ground 22 such as a crushed stone layer is firmly rolled on the upper part thereof. And after rolling, the water-permeable pavement 21 is constructed on the road surface with a thickness of about 3 cm to 5 cm and a gradient of about 2%. The rainwater R on the roadway 2 reaches the side groove from the upper edge of the roadway side groove 5 in a road gradient while passing through the gap inside the water-permeable pavement 21.
In addition, the rain water R overflows the upper edge of the roadway side groove | channel 5, and the method of directing a flow to the road edge side roadside groove | channel 5 is taken.
[0003]
[Problems to be solved by the invention]
(1) When there is a lot of rainfall Rainwater R1 on the sidewalk 1 overflows on the water permeable block 11 (on the water permeable pavement) if it penetrates underground, flows out along the slope of the sidewalk 1, and the curb block 3 or over the top end 41 of the L-shaped side groove 4 for the road, it flows into the roadway side groove 5 and the sidewalk side groove 6. At that time, the rainwater R, R1 overflows the sidewalk 1 and the roadway 2, which is an obstacle to walking of pedestrians.
Further, as shown in FIG. 14, when the curb block 4 with the protruding portion is arranged on the sidewalk 1, the roadway passes between the curb block and the curb block so as to go around the curb block 4 as indicated by the arrow. It flows into the side groove 5 (see FIG. 15). Furthermore, when there is a depression on the sidewalk 1, there is a problem that a water pool can be formed, which obstructs walking of pedestrians.
(2) The sidewalk 1 with the conventional water-permeable block 11 or the water-permeable pavement 21 is mainly intended to infiltrate rainwater underground. The permeated water wraps around the bottom of various structures such as curb blocks, roadway side grooves 5 and sidewalk side grooves 6, road L-shaped side grooves 7, etc., and as a result, the ground 14 and 22 under the structure are softened, and the structure Helps sink or meander things.
{Circle around (3)} Rainwater R on the roadway 2 cannot be treated in the voids of the permeable pavement 21 when the amount of precipitation increases, so it overflows on the road and further flows into the side ditch in a road gradient. At this time, the water-permeable function as a water-permeable pavement is already lost, and it becomes the same as a paved road without a water-permeable function. As a result, hydrobraning, smoking, water splashing, and visibility problems due to light reflection occur in the traveling vehicle, and the driver is prevented from driving safely, causing damage to pedestrians walking on the road. There is a problem that it will be.
[0004]
Therefore, the present invention has been made in view of such problems, and it efficiently guides rainwater that has fallen in large quantities on the sidewalk or roadway to the roadway side groove on the side of the roadway or the sidewalk side groove on the side of the roadway. The purpose is to provide a road structure that prevents rainwater from overflowing.
[0005]
[Means for Solving the Problems]
As means for solving the above technical problems, the road structure according to the invention 請 Motomeko 1,
Subgrade The impermeable layer 23 is provided on the 24, the the roadway 2 formed by providing a porous pavement 21 on impermeable layer 23, distribution along the edge of the vehicle road 2 in which a water-permeable portion P to the upper portion in road structure which is composed of the roadway side groove 5 which is set,
The crushed stone layer ground 22 is provided on the road bed 24 and the impermeable layer 23 is provided on the crushed stone layer ground 22, so that rainwater Rl that has permeated the permeable pavement 21 of the roadway 2 flows into the water permeable portion P. A road structure characterized by being disposed at the position of the water-permeable pavement 21.
The invention of claim 2 is the road structure according to claim 1,
Car road side groove 5, in which formed in the cross-section gate type in which the bottom plate portion in the open, is characterized in that a porous permeable portion 31 on one side the side wall upper end.
The invention of claim 3 is the road structure according to claim 1,
Car road side groove 5, thereby forming a U-shaped cross section, is characterized in that a porous permeable portion 31 on one side the side wall upper end.
The invention of claim 4 is the road structure according to claim 1,
Car road side groove 5, thereby forming a U-shaped cross section, is characterized in that a notched groove 51 on one side the side wall upper end.
The invention of claim 5 is the road structure according to claim 1,
Car road side groove 5, thereby forming the underdrain type is characterized in that a porous permeable portion 31 on one side璧上end.
The invention of claim 6 is the road structure according to claim 1,
Car road side groove 5, thereby forming the underdrain type is characterized in that a notched groove 51 on one side the side wall upper end.
The invention of claim 7 is the road structure according to claim 1,
In roadway side side groove 5 of arranging the gutter lid 54 provided with a concave recess 56 on the top surface along a connecting direction of the vehicle road side ditch 5 to the open mouth, boundary height position of the porous pavement 21 with impermeable layer 23 Is characterized in that the upper end of the roadway side groove 5 is arranged .
[0006]
The road structure according to the invention of claim 8 is:
And adjacent to the該車canal side groove 5 with placing roadway side gutter 5 along the edge of the carriageway 2 Place the curb block 3 provided with the permeable portion P, and was constructed walkways 1 via the said edge stone block 3 in the road, the sidewalk 1 includes, in order on the sidewalk side ground 14, crushed stone layer 13, sand layer 12, formed by providing a permeable block 11, permeability portion P of the curb block 3 in crushed stone layer 13 height set only, characterized in that rainwater R2 permeated the permeable block 11 is disposed a water permeability portion P of the curb block 3 at the upper edge position of the vehicle road side groove 5 so as to flow into the roadway side groove 5 Yes.
The invention of claim 9 is the road structure according to claim 8,
Hydraulic conductivity unit P is characterized in that a porous permeable portion 31.
The invention of claim 10 is the road structure according to claim 8,
Edge stone block 3 is characterized in that a permeable hole 32 to the height position of the crushed stone layer 13 positioned sidewalk 1.
The invention of claim 11 is the road structure according to claim 8,
Edge stone block 3 is characterized in that a porous permeable portion 31 to the height position of the crushed stone layer 13 positioned sidewalk 1.
The invention of claim 12 is the road structure according to claim 8,
Edge stone block 3, the provided protruding portions 35 on the sidewalk 1 side lower end, is characterized in that a permeable hole 32 in crushed stone layer 13 the height position of the sidewalk 1.
The invention of claim 13 is the road structure according to claim 8,
Edge stone block 3, the projecting portion 35 on the sidewalk 1 side lower end provided is characterized in that a porous permeable portion 31 to the height position of the crushed stone layer 13 sidewalk 1.
The invention of claim 14 is the road structure according to claim 8,
Walkways 1, the porous pavement 21 is formed instead of the permeable blocks, it is characterized in that a permeable portion P of the curb block 3 to the height position of the translucent aqueous pavement 21.
[0007]
The road structure according to the invention of claim 15 is
In road arranged side groove 6 having a permeability portion along the edge of the sidewalk 1, wherein the sidewalk 1 includes, in order on the sidewalk side ground 14, crushed stone layer 13, sand layer 12, formed by providing a permeable block 11 , the groove 6, the water permeation unit P provided at substantially the same height as the crushed stone layer 13 is characterized in that arranged the permeability unit P of the groove 6 in the crushed stone layer 13 position of the walkway 1.
The invention of claim 16 is the road structure according to claim 15,
The walkways 1, the porous pavement 21 in place of the water-permeable blocks 11 provided in the groove 6, it is provided a permeable portion P in its upper edge position, permeability of the side grooves 6 on the transparent aqueous pavement 21 position P is provided.
[0008]
The road structure according to the invention of claim 17 is:
In a road where an L-shaped side groove 4 for road having a standing portion 41 is provided on the side of the sidewalk 1 near the boundary between the sidewalk 1 and the roadway 2, the sidewalk 1 is in order from the top, the permeable block 11, the sand layer 12, and the crushed stone. In this order, the roadway 2 is provided with a crushed stone layer 22 and a water-permeable pavement 21 in order on the road floor 24, and the standing portion 41 of the L-shaped side groove 4 for the road has substantially the same height as the crushed stone layer 13. In order to allow rainwater R2 that has penetrated the crushed stone layer 13 of the sidewalk 1 and rainwater Rl that has penetrated the water-permeable pavement 21 of the roadway 2 to flow into the groove 42 of the L-shaped side groove 4 for road, the permeability unit P of the road L-type gutters 4 while arranged in crushed stone layer 13 position, characterized in that disposed below the porous pavement 21 on the edge carriageway second road L-type gutters 4 Yes.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. In FIG. 1, the road structure according to the first aspect of the present invention includes a crushed stone layer ground 22 provided on a road floor 24, an impermeable layer 23 provided on the crushed stone layer ground 22, and A water-permeable pavement 21 is provided on the water-permeable layer 23.
The roadway side groove 5 disposed along the end of the roadway 2 is provided with a water permeable portion P at the upper end thereof. Further, the water permeable portion P is disposed at the position of the water permeable pavement 21 so that rainwater R1 that has permeated through the water permeable pavement 21 of the roadway 2 flows.
Further, as shown in FIG. 2, the roadway side groove 5 is formed in a cross-sectional gate shape with an open bottom plate portion, and a porous water permeable portion 31 formed using, for example, porous concrete is formed on the upper end of one side wall. You may provide, and you may provide the notch groove 51 like FIG.
Further, the roadway side groove 5 is formed in a U-shaped cross section as shown in FIG. 3, and a porous water permeable portion 31 may be provided at the upper end of one side wall, and a notch groove 51 is provided as shown in FIG. Also good. 20A, a porous water permeable portion 31 is provided at the upper end of one side wall of the U-shaped side groove 5, and a water permeable hole 32 is provided at the upper end portion of the other side wall, and one of the U-shaped side grooves 5 is formed as shown in FIG. The cutout groove 51 may be provided at the upper end of the side wall, the porous water permeable portion 31 may be provided at the upper end of the other side wall, and the cutout groove 51 may be provided at the upper end of both side walls of the U-shaped side groove 5 as shown in FIG. Further, as shown in FIG. D, a notch groove 51 may be provided at the upper end of one side wall of the U-shaped side groove 5, and a water permeable hole 32 may be provided at the upper end of the other side wall.
Further, the roadway side groove 5 may be formed as a culvert type as shown in FIG. 4, and a porous water permeable portion 31 may be provided at the upper end of a predetermined side wall, or a notch groove 51 may be provided as shown in FIG. 20C. Good.
Moreover, the road structure of 1st invention arrange | positions the upper end of the roadway side groove | channel 5 in the boundary height position of the water-permeable pavement 21 and the impermeable layer 23, and the opening of the roadway side groove | channel 5 is shown in FIG. A side groove lid 54 having a concave recess 56 on the upper surface is disposed along the connecting direction of the roadway side groove 5.
[0010]
Next, in the road structure of the second invention, as shown in FIG. 6, the roadway side groove 5 is arranged along the end of the roadway 2, and the curb block 3 is arranged adjacent to the roadway side groove 5, and A road in which a sidewalk 1 is constructed through the curb block 3. The sidewalk 1 is formed by sequentially providing a crushed stone layer 13, a sand layer 12, and a water permeable block 11 on the sidewalk side ground 14, and the curb block 3 has a water permeable portion P at the height of the crushed stone layer 13. The water permeable portion P of the curb block 3 is disposed at the upper edge position of the roadway side groove 5 so that the rainwater R2 that has penetrated the water permeable block 11 flows into the roadway side groove 5.
The water permeable part P of 2nd invention is good also as the porous water permeable part 31 like FIG.
Furthermore, the curb block 3 of the second invention may be provided with a water permeable hole 32 as a water permeable portion P at the height position of the crushed stone layer 13 of the sidewalk 1 as shown in FIGS. 31 may be provided.
The curb block 3 of the second invention may be provided with a protrusion 35 at the lower end on the side of the sidewalk 1 and a water permeable hole 32 at the height of the crushed stone layer 13 of the sidewalk 1, as shown in FIG. A porous water permeable portion 31 may be provided.
Further, as shown in FIG. 9, the sidewalk 1 of the second aspect of the invention forms a water-permeable pavement 21 instead of the water-permeable block, and the water-permeable portion P of the curb block 3 is provided at the height position of the water-permeable pavement 21. It may be provided.
In the water permeable portion P, a porous water permeable portion 31 may be horizontally provided in a sandwich shape at a substantially intermediate height position of the upright portion 41 as shown in FIG. 21 and FIG. 22A, and as shown in FIG. The water permeable portion 31 may be provided horizontally at a predetermined interval. Further, the porous water-permeable portion 31 may be provided at a substantially central intermediate height position as in C, or the porous water-permeable portion 31 may be provided on the entire upper end portion of the upright portion 41. Furthermore, instead of the porous water permeable portion 31 of A, the water permeable holes 32 may be provided horizontally.
[0011]
Furthermore, in the road structure of the third invention, as shown in FIG. 10, in the road formed by arranging the side groove 6 along the end of the sidewalk 1, the sidewalk 1 is in order on the sidewalk-side ground 14 in order of the crushed stone layer 13. , The sand layer 12 and the water permeable block 11 are formed, and the side groove 6 is provided with a water permeable portion P at substantially the same height as the crushed stone layer 13, and the water permeable portion P of the side groove 6 is provided at the crushed stone layer 13 position of the sidewalk 1. Is arranged.
Further, as shown in FIG. 11, the sidewalk 1 of the third invention is provided with a water-permeable pavement 21 instead of the water-permeable block 11, and the side groove 6 is provided with a water-permeable portion P at the upper edge position. The water permeable portion P of the side groove 6 may be disposed at the position of the water permeable pavement 21.
[0012]
The road structure of the fourth invention mainly relates to a road structure applied to a road in a park, a shopping street, etc., where the amount of water stored in the groove 42 is relatively small. As shown in FIG. 12, on the road in which the L-shaped side groove 4 for road having the standing portion 41 provided on the side of the sidewalk 1 is disposed in the vicinity of the boundary between the sidewalk 1 and the roadway 2, the sidewalk 1 is permeable block in order from the top. 11, the sand layer 12 and the crushed stone layer 13 are formed in this order, and the roadway 2 is provided with a crushed stone layer 22 and a water-permeable pavement 21 in order on the road floor 24, and the standing portion 41 of the L-shaped side groove 4 for the road has a crushed stone. A permeable portion P is provided at almost the same height as the layer 13, and the rainwater R2 that has penetrated the crushed stone layer 13 of the sidewalk 1 and the rainwater R1 that has penetrated the permeable pavement 21 of the roadway 2 are in the groove 42 of the L-shaped side groove 4 for road. The permeable portion P of the road L-shaped side groove 4 is disposed at the position of the crushed stone layer 13, and the upper edge of the road L-shaped side groove 4 is disposed below the permeable pavement 21 of the roadway 2. ing.
In addition, the water permeable part P may be provided with the porous water permeable part 31 horizontally in a sandwich shape at a substantially intermediate height position of the upright part 41 as shown in FIG. 23A, and the porous water permeable part 31 as shown in FIG. 31 may be provided horizontally at a predetermined interval. Further, the porous water-permeable portion 31 may be provided at a substantially central intermediate height position as in C, or the porous water-permeable portion 31 may be provided on the entire upper end portion of the upright portion 41. Furthermore, instead of the porous water permeable portion 31 of A, the water permeable holes 32 may be provided horizontally.
[0013]
【The invention's effect】
Since this invention is comprised as mentioned above, there exists an effect described below.
(1) Rainwater that falls on the sidewalks and roadways appropriately penetrates the permeable blocks, permeable pavements, and crushed stone layers under the sidewalks and roadways, and is connected to these layers. It flows into the side groove and the road side groove at the end of the road. Therefore, even if a large amount of rainwater falls on the road, it continuously penetrates and efficiently flows into the sidewalk ditch at the end of the sidewalk and the roadside ditch at the end of the roadway. Never overflow. Therefore, since rainwater does not overflow on the road and the roadway, it does not cause a pedestrian's walking obstacle nor a vehicle running obstacle.
(2) Rainwater on the sidewalks and roadways, as appropriate, penetrates the water-permeable blocks under the sidewalks and roadways, the water-permeable pavement, and the crushed stone layer and communicates with them. Therefore, rainwater on the road continuously permeates and efficiently flows into the sidewalk ditch at the end of the sidewalk and the roadside ditch at the end of the roadway, so that it can be prevented from overflowing on the sidewalk or the roadway.
In particular, if the precipitation as isochronous long rain during the rainy season is high, curb blocks, gutter car roadside and sidewalks end, wraparound of seepage water into the lower part of various structures such as road L-type gutters is eliminated. As a result, the ground below the structure is not softened, and the structure is not encouraged to sink or meander. Therefore, the subsidence and meandering of the road structure can be prevented.
(3) The water accumulated or overflowing on the road efficiently flows into the sidewalk ditch at the end of the sidewalk and the roadside ditch at the end of the roadway and hardly overflows on the sidewalk or roadway. It is possible to prevent a hydro-braking phenomenon in which the wheels are idled by entering the vehicle, and a smoking phenomenon in which the water rises in the rearward direction when the vehicle is running and deteriorates the visibility of the following vehicle. Further, it is possible to prevent the field of view from deteriorating due to water splashing or light reflection.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a roadway and a side groove of the present invention.
FIG. 2 is a perspective view of a gate-type side groove of the present invention.
FIG. 3 is a perspective view of a U-shaped side groove of the present invention.
FIG. 4 is a front view of a culvert-type side groove of the present invention.
FIG. 5 is an explanatory diagram of the road structure of the present invention.
FIG. 6 is an explanatory diagram of the road structure of the present invention.
FIG. 7 is an explanatory diagram of the road structure of the present invention.
FIG. 8 is an explanatory diagram of a road structure according to the present invention.
FIG. 9 is an explanatory diagram of the road structure of the present invention.
FIG. 10 is an explanatory diagram of a road structure according to the present invention.
FIG. 11 is an explanatory diagram of a road structure according to the present invention.
FIG. 12 is an explanatory view of a road structure using an L-shaped side groove for road according to the present invention.
FIG. 13 is an explanatory diagram of a conventional road structure.
FIG. 14 is an explanatory diagram of a conventional road structure.
15 is a plan view of the road structure of FIG.
FIG. 16 is an explanatory diagram of a road structure using a conventional L-shaped side groove for roads.
FIGS. 17A and 17B are perspective views of a gate-type side groove in which a water permeable portion is provided at an upper end portion of a side wall.
FIG. 18 is a perspective view of a gate-type gutter having a water permeable portion at the upper end of the side wall.
19A and 19B are perspective views of U-shaped side grooves.
20A, B, C, D, and E are perspective views of a U-shaped side groove provided with a water permeable portion at the upper end of both side walls. FIG.
FIGS. 21A, B, C, D, and E are perspective views of a curb block provided with a water permeable portion.
FIG. 22 is a perspective view of a curb block provided with a water permeable portion; A, B, C, D, E.
FIG. 23 is a perspective view of an L-shaped side groove for road provided with a water permeable portion, A, B, C, D, E.
[Explanation of symbols]
1 sidewalk 11 permeable block 12 sand layer 13 crushed stone layer 14 sidewalk side ground 2 roadway 21 permeable pavement 22 crushed stone ground 23 impermeable layer 24 roadbed 3 curb block P permeable portion 31 porous permeable portion 32 permeable hole 35 protruding portion 4 road L-shaped side groove 41 Standing portion 42 Groove 5 Roadway side groove 51 Notch groove 54 Side groove cover 56 Recess 6 Sidewalk side groove

Claims (17)

路床２４上に不透水層２３を設け、該不透水層２３上に透水性舗装２１を設けて形成した車道２と、上端部に透水部Ｐを設けた該車道２の端に沿って配設される車道側側溝５とから構成される道路構造において、
前記路床２４上に砕石層地盤２２を設けると共に該砕石層地盤２２上に前記不透水層２３を設け、前記透水部Ｐは、車道２の透水性舗装２１を浸透した雨水Ｒｌが流入するように該透水性舗装２１位置に配設したことを特徴とする道路構造。Subgrade The impermeable layer 23 is provided on the 24, the the roadway 2 formed by providing a porous pavement 21 on impermeable layer 23, distribution along the edge of the vehicle road 2 in which a water-permeable portion P to the upper portion in road structure which is composed of the roadway side groove 5 which is set,
The crushed stone layer ground 22 is provided on the road bed 24 and the impermeable layer 23 is provided on the crushed stone layer ground 22, so that rainwater Rl that permeates the permeable pavement 21 of the roadway 2 flows into the water permeable portion P. A road structure characterized by being disposed at the position of the water-permeable pavement 21. 車道側側溝５は、底版部を開放にした断面門型に形成したものにおいて、片側側壁上端に多孔質透水部３１を設けたことを特徴とする請求項１に記載の道路構造。 Car road side groove 5, in which formed in the cross-section gate type in which the bottom plate portion in an open, road structure according to claim 1, characterized in that a porous permeable portion 31 on one side the side wall upper end. 車道側側溝５は、断面Ｕ字形に形成すると共に、片側側壁上端に多孔質透水部３１を設けたことを特徴とする請求項１に記載の道路構造。 Car road side groove 5, the road structure according to claim 1, characterized thereby forming a U-shaped cross section, in that a porous permeable portion 31 on one side the side wall upper end. 車道側側溝５は、断面Ｕ字形に形成すると共に、片側側壁上端に切欠溝５１を設けたことを特徴とする請求項１に記載の道路構造。 Car road side groove 5, the road structure according to claim 1, characterized thereby forming a U-shaped cross section, in that a notched groove 51 on one side the side wall upper end. 車道側側溝５は、暗渠型に形成すると共に、片側側璧上端に多孔質透水部３１を設けたことを特徴とする請求項１に記載の道路構造。 Car road side groove 5, the road structure according to claim 1, characterized thereby forming a culvert type, in that a porous permeable portion 31 on one side璧上end. 車道側側溝５は、暗渠型に形成すると共に、片側側壁上端に切欠溝５１を設けたことを特徴とする請求項１に記載の道路構造。Road structure according to claim 1 car canal side groove 5, which together form the culvert type, characterized in that a notched groove 51 on one side the side wall upper end. 開口部には該車道側側溝５の接続方向に沿って上面に凹状窪み５６を設けた側溝蓋５４を配置した車道側側溝５において、透水性舗装２１と不透水層２３の境目高さ位置に車道側側溝５の上端を配置したことを特徴とする請求項１に記載の道路構造。 In roadway side side groove 5 of arranging the gutter lid 54 provided with a concave recess 56 on the top surface along a connecting direction of the vehicle road side ditch 5 to the open mouth, boundary height position of the porous pavement 21 with impermeable layer 23 The road structure according to claim 1 , wherein an upper end of the roadway side groove 5 is disposed on the roadside. 車道２の端に沿って車道側側溝５を配置すると共に該車道側側溝５に隣接させて透水部Ｐを設けた縁石ブロック３を配置し、かつ該縁石ブロック３を介して歩道１を施工した道路において、前記歩道１は、歩道側地盤１４上に順に、砕石層１３、砂層１２、透水性ブロック１１を設けて形成し、前記縁石ブロック３の透水部Ｐは砕石層１３高さ位置に設け、前記透水性ブロック１１を浸透した雨水Ｒ２が車道側側溝５に流入するように該車道側側溝５の上縁位置に縁石ブロック３の透水部Ｐを配設したことを特徴とする道路構造。And adjacent to the該車canal side groove 5 with placing roadway side gutter 5 along the edge of the carriageway 2 Place the curb block 3 provided with the permeable portion P, and was constructed walkways 1 via the said edge stone block 3 in the road, the sidewalk 1 includes, in order on the sidewalk side ground 14, crushed stone layer 13, sand layer 12, formed by providing a permeable block 11, permeability portion P of the curb block 3 in crushed stone layer 13 height setting only the road which is characterized in that rainwater R2 permeated the permeable block 11 is disposed a water permeability portion P of the curb block 3 at the upper edge position of the vehicle road side groove 5 so as to flow into the roadway side groove 5 Construction. 透水部Ｐは、多孔質透水部３１であることを特徴とする請求項８に記載の道路構造。Hydraulic conductivity unit P is, road structure according to claim 8, characterized in that the porous permeable portion 31. 縁石ブロック３は、歩道１の砕石層１３位置の高さ位置に透水孔３２を設けたことを特徴とする請求項８に記載の道路構造。Road structure according to the edge stone block 3, claim 8, characterized in that a permeable hole 32 to the height position of the crushed stone layer 13 positioned sidewalk 1. 縁石ブロック３は、歩道１の砕石層１３位置の高さ位置に多孔質透水部３１を設けたことを特徴とする請求項８に記載の道路構造。 Edge stone block 3 road structure according to claim 8, characterized in that a porous permeable portion 31 to the height position of the crushed stone layer 13 positioned sidewalk 1. 縁石ブロック３は、歩道１側下端に突出部３５を設け、歩道１の砕石層１３高さ位置に透水孔３２を設けたことを特徴とする請求項８に記載の道路構造。Road structure according to claim 8 edge stone block 3, the provided protruding portions 35 on the sidewalk 1 side lower end, characterized in that a permeable hole 32 in crushed stone layer 13 the height position of the sidewalk 1. 縁石ブロック３は、歩道１側下端に突出部３５を設け、歩道１の砕石層１３の高さ位置に多孔質透水部３１を設けたことを特徴とする請求項８に記載の道路構造。 Edge stone block 3 road structure according to claim 8, characterized in that the provided protruding portions 35 on the sidewalk 1 side lower end, provided with a porous permeable portion 31 to the height position of the crushed stone layer 13 sidewalk 1. 歩道１は、透水性ブロックの代わりに透水性舗装２１を形成し、該透水性舗装２１の高さ位置に縁石ブロック３の透水部Ｐを設けたことを特徴とする請求項８に記載の道路構造。 Walkways 1, the porous pavement 21 is formed instead of the permeable blocks, according to claim 8, characterized in that a permeable portion P of the curb block 3 to the height position of the translucent aqueous pavement 21 Road structure. 歩道１の端に沿って透水部を設けた側溝６を配置した道路において、前記歩道１は、歩道側地盤１４上に順に、砕石層１３、砂層１２、透水性ブロック１１を設けて形成し、前記側溝６には、砕石層１３とほぼ同じ高さ位置に透水部Ｐを設け、前記歩道１の砕石層１３位置に側溝６の透水部Ｐを配設したことを特徴とする道路構造。In road arranged side groove 6 having a permeability portion along the edge of the sidewalk 1, wherein the sidewalk 1 includes, in order on the sidewalk side ground 14, crushed stone layer 13, sand layer 12, formed by providing a permeable block 11 , wherein the groove 6, the permeability unit P provided at substantially the same height as the crushed stone layer 13, the road structure, characterized in that it has disposed permeability portion P of the groove 6 in the crushed stone layer 13 position of the walkway 1. 歩道１には、透水性ブロック１１の代わりに透水性舗装２１を設け、側溝６には、その上縁位置に透水部Ｐを設けてなり、該透水性舗装２１位置に側溝６の透水部Ｐを配設したことを特徴とする請求項１５に記載の道路構造。The walkways 1, the porous pavement 21 in place of the water-permeable blocks 11 provided in the groove 6, it is provided a permeable portion P in its upper edge position, permeability of the side grooves 6 on the transparent aqueous pavement 21 position The road structure according to claim 15, wherein P is disposed. 歩道１と車道２の境界付近に、歩道１側に起立部４１を設けた道路用Ｌ型側溝４を配設した道路において、前記歩道１は上から順に、透水性ブロック１１、砂層１２、砕石層１３の順に形成し、前記車道２は路床２４上に順に、砕石層２２、透水性舗装２１を設け、前記道路用Ｌ型側溝４の起立部４１には、砕石層１３とほぼ同じ高さ位置に透水部Ｐを設け、歩道１の砕石層１３を浸透した雨水Ｒ２と車道２の透水性舗装２１を浸透した雨水Ｒｌが道路用Ｌ型側溝４の溝４２内に流入できるように、道路用Ｌ型側溝４の透水部Ｐを砕石層１３位置に配設すると共に、道路用Ｌ型側溝４の上縁を車道２の透水性舗装２１より下に配設したことを特徴とする道路構造。In a road where an L-shaped side groove 4 for a road having a standing portion 41 is provided on the side of the sidewalk 1 near the boundary between the sidewalk 1 and the roadway 2, the sidewalk 1 is in order from the top, the permeable block 11, the sand layer 12, and the crushed stone. In this order, the roadway 2 is provided with a crushed stone layer 22 and a water-permeable pavement 21 in order on the road floor 24, and the standing portion 41 of the L-shaped side groove 4 for the road has substantially the same height as the crushed stone layer 13. In order to allow rainwater R2 that has penetrated the crushed stone layer 13 of the sidewalk 1 and rainwater R1 that has penetrated the water-permeable pavement 21 of the roadway 2 to flow into the groove 42 of the L-shaped side groove 4 for road, A road characterized in that the water-permeable portion P of the L-shaped side groove 4 for road is disposed at the position of the crushed stone layer 13 and the upper edge of the L-shaped side groove 4 for road is disposed below the water-permeable pavement 21 of the roadway 2. Construction.
JP07689597A 1997-03-28 1997-03-28 Road structure Expired - Fee Related JP3909112B2 (en)

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