JP2007107258A - Rain water storage structure for residence - Google Patents

Rain water storage structure for residence Download PDF

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JP2007107258A
JP2007107258A JP2005298811A JP2005298811A JP2007107258A JP 2007107258 A JP2007107258 A JP 2007107258A JP 2005298811 A JP2005298811 A JP 2005298811A JP 2005298811 A JP2005298811 A JP 2005298811A JP 2007107258 A JP2007107258 A JP 2007107258A
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storage structure
water
rainwater storage
water absorption
absorption pipe
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Toshinori Haraguchi
敏則 原口
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a rain water storage structure for a residence capable of reserving rain water falling in a housing site in the ground to effectively use the rain water and, at the same time, reducing the discharge of drainage of the rain water to a drain gutter etc. to reduce load to the drain gutter etc. <P>SOLUTION: After a crushed stone bedrock layer 12 has been formed by constructing and rolling crushed stone having a particle size of 2.5 mm to 13 mm on subgrade soil 11 around a building 2 in the housing site 1, a permeable concrete paving layer 13 serving as 20% to 30% in void is formed thereon. A water suction pipe 14 having a large number of holes in the circumference and in the longitudinal direction is buried in the subgrade soil 11, and an outlet of the water suction pipe 14 is connected to a side ditch 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、住宅敷地内の建物周囲や建物屋根に降った雨水を貯留して、排水溝や下水道設備、河川への雨水の排出量を抑制し、それらへの負荷を軽減することのできる住宅用雨水貯留構造に関する。   The present invention stores rainwater that has fallen around buildings and building roofs within a residential premises, suppresses the amount of rainwater discharged into drains, sewerage facilities, and rivers, and reduces the load on them Concerning rainwater storage structure.

従来、住宅敷地内の建物周囲や建物屋根に降った雨水は、側溝等の排水溝や下水道設備にそのまま流されていた。また、近年、地表の舗装化に伴い、地表に降った雨水は、地中に浸透する機会が次第に減り、雨水のかなりの量が地中に浸透することなく、側溝や下水道設備等へ流れ込んでいる。このため、近年では、豪雨になると、一度に大量の雨水が側溝や下水道設備に流れ込んで、地盤の低い地域では床下床上浸水や河川の氾濫による被害を招いている。   Conventionally, rainwater that fell on the surroundings of buildings and on roofs of houses has been drained directly into drains such as gutters and sewerage facilities. In recent years, with the pavement of the surface of the earth, the chance of rainwater falling on the surface has gradually decreased, and a considerable amount of rainwater does not penetrate into the ground, but flows into gutters and sewer facilities. Yes. For this reason, in recent years, in the case of heavy rain, a large amount of rainwater flows into the ditches and sewerage facilities at one time, causing inundation on the underfloor floor and river flooding in areas with low ground.

一方、近年の地表の舗装化に伴い、特に都市部において、太陽熱により蓄熱された地表の温度が夜になっても低下しにくいヒートアイランド現象が生じ、これが問題となっている。   On the other hand, with the recent paving of the surface of the earth, especially in urban areas, a heat island phenomenon is generated which is difficult to decrease even at night when the temperature of the surface of the earth stored by solar heat becomes night.

排水溝や下水道設備への負荷を軽減させるものとして、雨水貯留タンクを住宅敷地内に設置する例が開示されている（特許文献１、特許文献２等）。   As examples of reducing the load on drains and sewer facilities, examples of installing a rainwater storage tank in a residential premises are disclosed (Patent Document 1, Patent Document 2, etc.).

特開２００５−１８８０６０号公報JP 2005-188060 A 特開平１１−２４１３７４号公報Japanese Patent Laid-Open No. 11-241374

しかし、前記いずれの例も、雨水貯留タンクの容量に限界があり、多量の雨水を貯留するにはタンクを大型化する必要があり、特に地中に建設する場合には、施工費用が嵩む問題がある。一方、施工費用を安くするために雨水貯留タンクを地上に設置する場合には、敷地と建物との関係から、敷地内のタンクの設置面積が制約を受けると同時に、タンクの設置によって敷地の有効利用が図れなくなるという問題がある。   However, in any of the above examples, the capacity of the rainwater storage tank is limited, and it is necessary to enlarge the tank in order to store a large amount of rainwater. Especially when it is built underground, the construction cost increases. There is. On the other hand, when installing rainwater storage tanks on the ground to reduce construction costs, the installation area of the tanks on the site is restricted due to the relationship between the site and the building, and at the same time, There is a problem that it cannot be used.

本発明は上記課題に鑑みてなされたもので、住宅敷地内に降った雨水を地中に貯留して、雨水を有効利用すると同時に、排水溝等への雨水の排出量を減少させて、排水溝等への負荷を軽減することのできる住宅用雨水貯留構造を提供することを目的とする。   The present invention has been made in view of the above problems, and stores rainwater that has fallen in a residential site in the ground, effectively using rainwater, and at the same time reducing the amount of rainwater discharged to a drainage ditch, etc. It aims at providing the rainwater storage structure for houses which can reduce the load to a ditch etc.

また、施工費用が安価ですむ住宅用雨水貯留構造を提供することを目的とする。   It is another object of the present invention to provide a residential rainwater storage structure that requires low construction costs.

上記課題を解決するために、本発明に係る請求項１の住宅用雨水貯留構造は、住宅敷地内の建物周囲の路床土上に粒径２．５ｍｍ〜１３ｍｍの砕石を敷設および転圧して砕石基盤層を形成した後、その上に空隙率２０％〜３０％となる透水性コンクリート舗装材層を形成したことを特徴とする。   In order to solve the above-mentioned problems, the residential rainwater storage structure according to claim 1 according to the present invention lays and rolls a crushed stone having a particle size of 2.5 mm to 13 mm on a roadbed soil around a building in a residential site. After forming the crushed stone base layer, a water permeable concrete pavement layer having a porosity of 20% to 30% is formed thereon.

住宅敷地内の地表や建物屋根に降った雨水は、地表から直接または雨樋を通して建物周囲の空隙率２０％〜３０％の透水性コンクリート舗装材層に浸透し、降雨量の一部または全部が透水性コンクリート舗装材層に貯留される。すなわち、透水性コンクリート舗装材層を形成する透水性コンクリートには多数の空隙が存在し、地表から浸透した雨水が多数の空隙に貯留される。これにより、大量の雨水がいっきに排水溝や下水道設備に流れ込むことが抑制される。   Rainwater that falls on the ground surface and building roofs within the residential site penetrates the permeable concrete pavement layer with a porosity of 20% to 30% directly from the ground surface or through rain gutters, and part or all of the rainfall falls. It is stored in the permeable concrete pavement layer. That is, a large number of voids exist in the permeable concrete forming the permeable concrete pavement material layer, and rainwater that has permeated from the ground surface is stored in the numerous voids. Thereby, it is suppressed that a large amount of rainwater flows into a drain ditch or a sewer installation at the same time.

透水性コンクリート舗装材層内に貯留された雨水は、その下層の砕石基盤層から路床土にかけてゆっくりと浸透し、地下水の復活、敷地内に植樹した樹木の活性化、地表温度の低下によるヒートアイランド現象の抑制等において、雨水が有効利用される。   Rainwater stored in the permeable concrete pavement layer slowly permeates from the crushed stone base layer to the roadbed soil, reviving groundwater, revitalizing trees planted on the site, heat island due to a decrease in surface temperature Rainwater is effectively used to control the phenomenon.

貯留許容量をオーバーした雨水は、砕石基盤層や路床土や吸水管等を通して、排水溝や下水道設備へ排出されるが、排出量自体が減るので、排水溝等や河川に掛かる負荷が軽減される。また、排水溝等の容積の縮小が可能となり、その施工費用が軽減される。   Rainwater that exceeds the allowable storage capacity is discharged to drainage drains and sewerage facilities through the crushed stone layer, subgrade soil, water absorption pipes, etc., but since the discharge itself is reduced, the load on the drainage drainage and rivers is reduced. Is done. In addition, the volume of the drainage groove or the like can be reduced, and the construction cost can be reduced.

透水性コンクリート舗装材層を空隙率２０％〜３０％としたのは、空隙率２０％未満であると雨水を貯留する効果が低く、空隙率３０％を超えると舗装材としての強度が低下するからである。   The reason why the porosity of the permeable concrete pavement layer is 20% to 30% is that if the porosity is less than 20%, the effect of storing rainwater is low, and if the porosity exceeds 30%, the strength as a pavement decreases. Because.

本発明に係る請求項２の住宅用雨水貯留構造は、路床土中に多数の孔を周上および長手方向に有する吸水管を埋設し、この吸水管の出口を排水溝または下水道設備に接続してなることを特徴とする。   According to a second aspect of the present invention, there is provided a housing rainwater storage structure in which a water absorption pipe having a large number of holes in the circumferential and longitudinal directions is embedded in the roadbed soil, and an outlet of the water absorption pipe is connected to a drainage ditch or sewerage equipment. It is characterized by becoming.

路床土中に多数の孔を周上および長手方向に有する吸水管を埋設することにより、大量に雨水が降った場合など、貯留許容量をオーバーした雨水が吸水管を通じて排水溝または下水道設備に効率よく排出される。   By embedding a water absorption pipe with a large number of holes in the roadbed soil in the circumferential and longitudinal directions, rainwater that exceeds the storage capacity, such as when a large amount of rainwater falls, passes through the water absorption pipe to the drainage ditch or sewerage system. It is discharged efficiently.

本発明に係る請求項３の住宅用雨水貯留構造は、吸水管の周囲を、透水性コンクリートで覆ってなることを特徴とする。   The residential rainwater storage structure according to claim 3 of the present invention is characterized in that the periphery of the water absorption pipe is covered with permeable concrete.

吸水管の周囲を透水性コンクリートで覆ってなることで、吸水管内に路床土中の土砂が吸収されるのを防止することができる。特に大量の雨が集中して降るときなど、大きい効果を発揮する。   By covering the periphery of the water absorption pipe with permeable concrete, it is possible to prevent the earth and sand in the roadbed soil from being absorbed into the water absorption pipe. This is especially effective when a large amount of rain falls.

本発明に係る請求項４の住宅用雨水貯留構造は、吸水管の途中に、集灰マスを設置してなることを特徴とする。   The residential rainwater storage structure according to claim 4 of the present invention is characterized in that an ash collection mass is installed in the middle of the water absorption pipe.

地表に微小粒の火山灰が降る場合は、降雨時に雨水と一緒に透水性コンクリート舗装材層を浸透し、吸水管に入り込んでしまうので、吸水管内に入り込んだ灰を除去する必要がある。吸水管の途中に集灰マスを設置することにより、吸水管内に入り込んだ灰は吸水とともに集灰マスに集積、沈殿される。灰を定期的に除去することができる。特に大量の降灰があった時など、大きい効果を発揮する。   When fine-grained volcanic ash falls on the ground surface, it penetrates the permeable concrete pavement layer together with rainwater during rain, and enters the water absorption pipe. Therefore, it is necessary to remove the ash that has entered the water absorption pipe. By installing the ash collection mass in the middle of the water absorption pipe, the ash that has entered the water absorption pipe is accumulated and precipitated in the ash collection mass together with the water absorption. Ashes can be removed periodically. It is especially effective when there is a large amount of ash fall.

本発明に係る請求項５の住宅用雨水貯留構造は、透水性コンクリート舗装材層が、セメント１００重量部に対し、水性エマルジョン樹脂５〜２０重量部、水２０〜３０重量部、粒径２．５ｍｍ〜１３ｍｍの砕石５００〜６００重量部を配合したものを敷設してなることを特徴とする。   In the rainwater storage structure for a house according to claim 5 of the present invention, the water-permeable concrete pavement layer has 5 to 20 parts by weight of water-based emulsion resin, 20 to 30 parts by weight of water, and a particle size of 2.100 parts by weight of cement. What mix | blends 500-600 weight part of crushed stones of 5 mm-13 mm is laid, It is characterized by the above-mentioned.

前記配合とすることで、圧縮強度、曲げ強度ともに優れた空隙率２０〜３０％の透水性コンクリート舗装材層を得ることができる。   By setting it as the said mixing | blending, the water-permeable concrete pavement material layer with the porosity of 20-30% excellent in both compressive strength and bending strength can be obtained.

以上説明したように、本発明に係る住宅用雨水貯留構造によると、敷地内に降った雨水の一部または全部を、空隙率２０％〜３０％の透水性コンクリート舗装材層に速やかに貯留して、排水溝や下水道設備に対する雨水の排出量を減らし、もって排水溝等や河川に掛かる負荷を軽減できる効果を奏する。また、透水性コンクリート舗装材層に貯留した雨水を、地下水の復元、地表温度の低下によるヒートアイランド現象の抑制、敷地内の樹木の活性化などにおいて、有効利用することができる。   As described above, according to the residential rainwater storage structure according to the present invention, part or all of the rainwater that falls on the site is quickly stored in the permeable concrete pavement layer having a porosity of 20% to 30%. Thus, it is possible to reduce the amount of rainwater discharged to drains and sewer facilities, thereby reducing the load on drains and rivers. In addition, rainwater stored in the permeable concrete pavement layer can be effectively used for restoration of groundwater, suppression of heat island phenomenon due to a decrease in surface temperature, activation of trees in the site, and the like.

また、雨水の貯留構造として、大型の雨水貯留タンクを設置せずに済むから、施工費用が安くすみ、敷地の有効利用も図れるという効果を奏する。   In addition, since it is not necessary to install a large rainwater storage tank as a rainwater storage structure, construction costs can be reduced and effective use of the site can be achieved.

次に本発明に係る住宅用雨水貯留構造の実施形態を図面を参照して説明する。図１および図２はその第１の実施形態を、図３は同第２の実施形態を、図４は同第３の実施形態を、それぞれ示している。まず、第１の実施形態を説明する。図１は敷地の平面図、図２は図１のＡ−Ａ断面図を示している。   Next, an embodiment of a residential rainwater storage structure according to the present invention will be described with reference to the drawings. 1 and 2 show the first embodiment, FIG. 3 shows the second embodiment, and FIG. 4 shows the third embodiment. First, the first embodiment will be described. 1 is a plan view of the site, and FIG. 2 is a cross-sectional view taken along the line AA in FIG.

図１の平面図に示すように、略正方形をなす住宅用敷地１には略中央に建物２が設置され、その前面の道路６側に駐車場３と庭４が設けられている。また建物２を囲むようにして敷地１の周囲をコ字形に堀５が囲んでいる。敷地１と道路６の間には排水溝である側溝７が位置する。   As shown in the plan view of FIG. 1, a building 2 is installed at a substantially center on a residential site 1 having a substantially square shape, and a parking lot 3 and a garden 4 are provided on the road 6 side in front of the building 2. A moat 5 surrounds the site 1 in a U-shape so as to surround the building 2. Between the site 1 and the road 6, a side groove 7 which is a drainage groove is located.

本実施形態の住宅用雨水貯留構造１０は、図１の平面図に示すように、敷地内１の、駐車場３および庭４を除く、建物２の周囲に設けられる。この住宅用雨水貯留構造１０は、図２の断面図に示すように、路床土１１の上に粒径２．５ｍｍ〜１３ｍｍの砕石を敷設、転圧して厚さ１０ｃｍの砕石（クラッシャーラン）基盤層１２を形成し、その砕石基盤層１２の上に空隙率２０％〜３０％となる厚さ２ｃｍ〜５ｃｍの透水性コンクリート舗装材層１３を形成した基本構造となっている。   As shown in the plan view of FIG. 1, the residential rainwater storage structure 10 of the present embodiment is provided around the building 2 in the site 1 excluding the parking lot 3 and the garden 4. As shown in the cross-sectional view of FIG. 2, the residential rainwater storage structure 10 has a crushed stone (crusher run) base 10 cm thick by laying crushed stone having a particle size of 2.5 mm to 13 mm on the roadbed soil 11 and rolling it. It has a basic structure in which a layer 12 is formed and a permeable concrete pavement layer 13 having a thickness of 2 cm to 5 cm having a porosity of 20% to 30% is formed on the crushed stone base layer 12.

路床土１１中には溝を掘削して、大径、小径の吸水管１４、１５が埋設されている。これらの吸水管１４、１５は管壁の長手方向および周方向に多数の孔を形成する管で、大径の給水管１４は、堀５の内側に位置して建物２の周囲を囲み、両側の先端出口が側溝７に接続され、路床土１１中に浸透する雨水を吸収して側溝７まで導き、排出する役割をする。また、小径の吸水管１５は、建物２の屋根８の軒樋９ａから続く縦樋９ｂの下端出口と大径の吸水管１４の途中の間、縦樋９ｂの下端出口と側溝７をそれぞれ接続して、屋根に降った雨水を軒樋９ａから大径の吸水管１４に導き、あるいは直接、側溝７に導き、排出する役割をする。   Grooves are excavated in the subgrade soil 11, and large-diameter and small-diameter water absorption pipes 14 and 15 are embedded. These water absorption pipes 14 and 15 are pipes that form a large number of holes in the longitudinal direction and the circumferential direction of the pipe wall, and the large-diameter water supply pipe 14 is located inside the moat 5 and surrounds the periphery of the building 2. Is connected to the side groove 7 to absorb rainwater penetrating into the road bed soil 11 and guide it to the side groove 7 to discharge it. The small-diameter water intake pipe 15 connects the lower end outlet of the vertical eave 9b and the side groove 7 between the lower end outlet of the vertical eave 9b continuing from the eave eave 9a of the roof 8 of the building 2 and the large-diameter water intake pipe 14, respectively. Then, the rainwater that has fallen on the roof is led from the eaves 9a to the large-diameter water absorption pipe 14 or directly to the side groove 7 to be discharged.

大径の吸水管１４、小径の吸水管１５の各周囲を、土砂の吸出しを防止するための透水性コンクリート１６で全長にわたり覆う。また、大径の吸水管１４の角部（堀５の角部近傍に位置する）および側溝７における先端出口、小径の吸水管１５との接続部には集水マス１７を設置する。この集水マス１７は降灰時に吸水管１４、１５内に入り込む火山灰を集積し、沈殿させるもので、集水マス１７内の灰は定期的に除去する。   The periphery of each of the large-diameter water absorption pipe 14 and the small-diameter water absorption pipe 15 is covered with a permeable concrete 16 for preventing the suction of earth and sand. Further, a water collecting mass 17 is installed at a corner portion of the large-diameter water absorption pipe 14 (located in the vicinity of the corner of the moat 5), a tip outlet at the side groove 7, and a connection portion with the small-diameter water absorption pipe 15. The water collecting mass 17 accumulates and precipitates the volcanic ash that enters the water absorption pipes 14 and 15 when the ash falls, and the ash in the water collecting mass 17 is periodically removed.

透水性コンクリート舗装材層１３は、混練ミキサーに対し、粒径２．５ｍ〜１３ｍｍの細骨材（砕石７号、砕石６号）、普通ポルトランドセメント、添加材として抗菌剤、竹炭、水性エマルジョン樹脂、水を順次投入し、混練する。配合比は、普通ポルトランドセメント１００重量部に対し、水性エマルジョン樹脂５〜２０重量部、水２０〜３０重量部、細骨材５００〜６００重量部とする。これらの材料を混練ミキサーで十分練り混ぜることで２０％〜３０％の気泡を形成する透水性コンクリートが作製され、この透水性コンクリートを砕石基盤層１２の上に流し込むことで、透水性コンクリート舗装材層１３が形成される。透水性コンクリート１６も、上記同様の材料にて制作する。   The permeable concrete pavement layer 13 is a fine aggregate (crushed stone 7 and crushed stone 6) with a particle size of 2.5 to 13 mm, ordinary portland cement, antibacterial agent, bamboo charcoal, and aqueous emulsion resin as additives. Then, water is sequentially added and kneaded. The blending ratio is 5 to 20 parts by weight of aqueous emulsion resin, 20 to 30 parts by weight of water, and 500 to 600 parts by weight of fine aggregate with respect to 100 parts by weight of ordinary Portland cement. A permeable concrete that forms 20% to 30% bubbles is produced by sufficiently kneading these materials with a kneading mixer. By pouring the permeable concrete onto the crushed stone base layer 12, the permeable concrete pavement material. Layer 13 is formed. The permeable concrete 16 is also made of the same material as described above.

図３は、本発明に係る住宅用雨水貯水構造１０の第２の実施形態であり、路床土１１中に不透水層２０を設けた例を示している。この不透水層２０により、雨水を透水性コンクリート舗装材層１３および砕石基盤層１２の両方に貯留することができる。この不透水層２０は、セメントコンクリートに路床土を混練したものを、路床土１１の上に敷設し、転圧して形成する。大径の吸水管１４、小径の吸水管１５は不透水層２０の上に埋設し、透水性コンクリート舗装材層１３および砕石基盤層１２の両方に対する許容量をオーバーする雨水を吸水して側溝７に排出する。   FIG. 3 is a second embodiment of the residential rainwater storage structure 10 according to the present invention, and shows an example in which an impermeable layer 20 is provided in the roadbed soil 11. With this impermeable layer 20, rainwater can be stored in both the permeable concrete pavement material layer 13 and the crushed stone base layer 12. The water impermeable layer 20 is formed by laying a cement concrete mixed with a roadbed soil on the roadbed soil 11 and rolling it. The large-diameter water absorption pipe 14 and the small-diameter water absorption pipe 15 are embedded on the impermeable layer 20 to absorb rainwater that exceeds the allowable amount for both the water-permeable concrete pavement material layer 13 and the crushed stone base layer 12, and the side grooves 7. To discharge.

図３は、本発明に係る住宅用雨水貯水構造１０の第３の実施形態であり、不透水層２０を、建物２側および堀５側から大径の吸水管１４に向けて下向きに傾斜させて斜面２０ａ、２０ａを形成し、吸水管１４に吸収されるべき雨水を吸水管１４へ効率よく導くように工夫したものである。縦樋９ｂの下端出口は地表の近傍に位置し、縦樋９ｂの出口から排出される屋根の雨水は、透水性コンクリート舗装材層１３を浸透し、貯留量をオーバーする雨水が吸水管１４を通して側溝７に排出される。   FIG. 3 shows a third embodiment of the residential rainwater reservoir structure 10 according to the present invention, in which the impermeable layer 20 is inclined downward from the building 2 side and the moat 5 side toward the large-diameter water absorption pipe 14. Thus, the slopes 20a and 20a are formed so that rainwater to be absorbed by the water absorption pipe 14 is efficiently led to the water absorption pipe 14. The bottom exit of the vertical gutter 9b is located in the vicinity of the ground surface, and the rainwater on the roof discharged from the exit of the vertical gutter 9b permeates the permeable concrete pavement layer 13, and the rainwater exceeding the storage amount passes through the water absorption pipe 14. It is discharged to the side groove 7.

以上の各実施形態の住宅用雨水貯留構造１０の路床土１１と砕石基盤層１２との間にシラス層（フィルター層）を設けて、雨水の保水性を高めるようにしてもよい。   A shirasu layer (filter layer) may be provided between the roadbed soil 11 and the crushed stone base layer 12 of the residential rainwater storage structure 10 of each of the above embodiments to increase the water retention of rainwater.

発明者は、前記実施形態の透水性コンクリート舗装材層１３に用いられる透水性コンク
リートを製作し、その強度試験、透水試験を実施した。試験条件は以下のとおりである。 The inventor manufactured the water-permeable concrete used for the water-permeable concrete pavement material layer 13 of the said embodiment, and implemented the strength test and the water-permeable test. The test conditions are as follows.

温度２０℃、湿度６５％の条件下で、タライ型モルタルミキサーに、普通ポルトランドセメント１５ｋｇ、砕石（６号＋７号）７５〜９０ｋｇ、水性エマルジョン樹脂（住友化学（株）製スミカフレックスＲＰ−１００Ｓ）０．７５〜３ｋｇ、竹炭０．３〜１ｋｇ、抗菌剤（（株）シナネンゼオミック社製）０．１５〜０．４５ｋｇ、水５〜６ｋｇの各材料を、砕石、セメント、添加剤としてゼオミック、竹炭、水性エマルジョン樹脂、水の順で仕込む。供試体は、圧縮強度試験用にφ１０ｃｍ×２０ｃｍ、曲げ強度試験用に１０ｃｍ×１０ｃｍ×４０ｃｍ、透水試験用にφ１０ｃｍ×２０ｃｍを複数用意した。なお、圧縮強度試験はＪＩＳＡ１１０８、曲げ強度試験はＪＩＳＲ５２０１を参照した。   Under conditions of a temperature of 20 ° C. and a humidity of 65%, a Tarai-type mortar mixer, ordinary Portland cement 15 kg, crushed stone (6 + 7) 75-90 kg, aqueous emulsion resin (Sumitomo Chemical Co., Ltd. Sumikaflex RP-100S) 0.75 to 3 kg, bamboo charcoal 0.3 to 1 kg, antibacterial agent (manufactured by Sinanen Zeomic Co., Ltd.) 0.15 to 0.45 kg, water 5 to 6 kg, crushed stone, cement, zeomic as additive, Prepare bamboo charcoal, water-based emulsion resin, and water in this order. Samples were prepared in a plurality of φ10 cm × 20 cm for the compressive strength test, 10 cm × 10 cm × 40 cm for the bending strength test, and φ10 cm × 20 cm for the water permeability test. In addition, the compressive strength test referred to JISA1108, and the bending strength test referred to JISR5201.

試験結果は、材齢２８日で圧縮強度（Ｎ／ｍｍ２）が１８．３〜２４．５、曲げ強度（Ｎ／ｍｍ２）が３．２３〜３．４３、空隙率（％）が２１．４〜２５．０、透水係数（ｃｍ／ｓ）が１．３４×１０−２〜１．３．２１×１０−２であった。 As a result of the test, the compressive strength (N / mm 2) was 18.3 to 24.5, the bending strength (N / mm 2 ) was 3.23 to 3.43, and the porosity (%) was 21. The hydraulic conductivity (cm / s) was 4 to 25.0, and 1.34 × 10 −2 to 1.3.21 × 10 −2 .

本発明に係る住宅用雨水貯留構造は、住宅敷地内の建物周囲や建物屋根に降った雨水を貯留して、排水溝や下水道設備、河川への雨水の排出量を抑制し、それらへの負荷を軽減することのできる住宅用雨水貯留構造として利用可能である。   The rainwater storage structure for housing according to the present invention stores rainwater that has fallen around buildings and building roofs within a residential site, suppresses the amount of rainwater discharged into drains, sewerage facilities, and rivers, and loads on them. It can be used as a rainwater storage structure for houses that can reduce the amount of water.

本発明の第１の実施形態を示す住宅用雨水貯留構造の配置を示す平面図、The top view which shows arrangement | positioning of the rainwater storage structure for houses which shows the 1st Embodiment of this invention, 図１のＡ−Ａ線矢視断面図、FIG. 1 is a cross-sectional view taken along line AA in FIG. 本発明の第２の実施形態を示す住宅用雨水貯留構造の断面図、Sectional drawing of the rainwater storage structure for houses which shows the 2nd Embodiment of this invention, 本発明の第３の実施形態を示す住宅用雨水貯留構造の断面図である。It is sectional drawing of the rainwater storage structure for houses which shows the 3rd Embodiment of this invention.

符号の説明Explanation of symbols

１ 住宅用敷地
２ 建物
３ 駐車場
４ 庭
５ 堀
６ 道路
７ 側溝
８ 屋根
９ａ 軒樋
９ｂ 縦樋
１０ 住宅用雨水貯留構造
１１ 路床土
１２ 砕石基盤層
１３ 透水性コンクリート舗装材層
１４ 大径の吸水管
１５ 小径の吸水管
１６ 透水性コンクリート
１７ 集水マス
２０ 不透水層
２０ａ 斜面 DESCRIPTION OF SYMBOLS 1 Residential site 2 Building 3 Parking lot 4 Garden 5 Moat 6 Road 7 Gutter 8 Roof 9a Eaves 9b Longitudinal 10 Residential rainwater storage structure 11 Roadbed soil 12 Crushed stone layer 13 Permeable concrete pavement layer 14 Large diameter Water absorption pipe 15 Small diameter water absorption pipe 16 Water permeable concrete 17 Water collecting mass 20 Impermeable layer 20a Slope

Claims (6)

敷地内の建物周囲の路床土上に粒径２．５ｍｍ〜１３ｍｍの砕石を敷設および転圧して砕石基盤層を形成した後、その上に空隙率２０％〜３０％となる透水性コンクリート舗装材層を形成したことを特徴とする住宅用雨水貯留構造。   A permeable concrete pavement with a porosity of 20% to 30% after a crushed stone base layer is formed by laying and rolling the crushed stone with a particle size of 2.5mm to 13mm on the roadbed soil around the building in the site A residential rainwater storage structure characterized by forming a material layer. 路床土中に多数の孔を周上および長手方向に有する吸水管を埋設し、この吸水管の出口を敷地外への排水溝または下水道設備に接続してなることを特徴とする請求項１記載の住宅用雨水貯留構造。   2. A water absorption pipe having a large number of holes in the road bed soil in the circumferential and longitudinal directions is embedded, and an outlet of the water absorption pipe is connected to a drainage channel or a sewerage facility outside the site. The residential rainwater storage structure described. 吸水管の途中に、建物に付設された雨樋の出口を接続してなることを特徴とする請求項１または請求項２に記載の住宅用雨水貯留構造。   The residential rainwater storage structure according to claim 1 or 2, wherein an outlet of a rain gutter attached to the building is connected in the middle of the water absorption pipe. 吸水管の周囲を、透水性コンクリートで覆ってなることを特徴とする請求項１ないし請求項３のうちいずれか１項に記載の住宅用雨水貯留構造。   The rainwater storage structure for a house according to any one of claims 1 to 3, wherein the periphery of the water absorption pipe is covered with water-permeable concrete. 吸水管の途中に、集水マスを設置してなることを特徴とする請求項１ないし請求項４のうちいずれか１項に記載の住宅用雨水貯留構造。   The rainwater storage structure for housing according to any one of claims 1 to 4, wherein a water collecting mass is installed in the middle of the water absorption pipe. 透水性コンクリート舗装材層は、セメント１００重量部に対し、水性エマルジョン樹脂５〜１２重量部、水２０〜３０重量部、粒径２．５ｍｍ〜１３ｍｍの砕石５００〜６００重量部を配合したものを、砕石基盤層の上に敷設してなることを特徴とする請求項１ないし請求項５のうちいずれか１項に記載の住宅用雨水貯留構造。   The water-permeable concrete pavement layer is a mixture of 5 to 12 parts by weight of an aqueous emulsion resin, 20 to 30 parts by weight of water, and 500 to 600 parts by weight of crushed stone having a particle size of 2.5 to 13 mm with respect to 100 parts by weight of cement. 6. The residential rainwater storage structure according to claim 1, wherein the residential rainwater storage structure is laid on a crushed stone base layer.
JP2005298811A 2005-10-13 2005-10-13 Rain water storage structure for residence Pending JP2007107258A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010180582A (en) * 2009-02-04 2010-08-19 Sumitomo Forestry Co Ltd Side ditch
WO2016141770A1 (en) * 2015-03-12 2016-09-15 周太泽 Hard road construction method for natural groundwater recharge
CN111395066A (en) * 2020-04-28 2020-07-10 中铁二院工程集团有限责任公司 Reconstruction structure and construction method for existing railway roadbed underground drainage system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010180582A (en) * 2009-02-04 2010-08-19 Sumitomo Forestry Co Ltd Side ditch
WO2016141770A1 (en) * 2015-03-12 2016-09-15 周太泽 Hard road construction method for natural groundwater recharge
US10233595B2 (en) 2015-03-12 2019-03-19 Taize ZHOU Hard pavement construction method for natural groundwater recharge
CN111395066A (en) * 2020-04-28 2020-07-10 中铁二院工程集团有限责任公司 Reconstruction structure and construction method for existing railway roadbed underground drainage system

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