JPH093900A - Earth retaining wall structure with water permeability - Google Patents
Earth retaining wall structure with water permeabilityInfo
- Publication number
- JPH093900A JPH093900A JP15129295A JP15129295A JPH093900A JP H093900 A JPH093900 A JP H093900A JP 15129295 A JP15129295 A JP 15129295A JP 15129295 A JP15129295 A JP 15129295A JP H093900 A JPH093900 A JP H093900A
- Authority
- JP
- Japan
- Prior art keywords
- retaining wall
- wall
- vertical drain
- passage
- water permeability
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、通水性を備えた土留
壁の構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retaining wall structure having water permeability.
【０００２】[0002]
【従来の技術】周知のように、地下構造物、例えば、地
下鉄や車両専用道路用などの地下トンネルを開削工法で
構築する際には、地山の崩壊を防止して、内部の掘削を
可能にするために止水性を備えた土留壁が構築される。
この種の土留壁を構築する工法は、連続地中壁工法を始
めとして、各種各様の方法が提供されているが、連続地
中壁工法や柱列壁工法などで構築される土留壁は、地下
構造物の本体部を構築した後にも地中に残置される場合
がある。2. Description of the Related Art As is well known, when constructing an underground structure, for example, an underground tunnel for a subway or a dedicated road for vehicles by an excavation method, it is possible to prevent the ground from collapsing and excavate the interior. A retaining wall with waterproofing is constructed in order to achieve this.
As for the construction method of this type of retaining wall, various methods are provided, including the continuous underground wall method, but the retaining wall constructed by the continuous underground wall method and the column row wall method is , It may be left underground even after the main body of an underground structure is constructed.
【０００３】ところで、止水性を備えた土留壁を地中に
残置しておくと、地下水流を遮断することになり、土留
壁の下流側の水脈が途絶えるため、井戸が枯れたり、あ
るいは、地盤が沈下するといった不都合が発生する。そ
こで、例えば、特開平６−４９８３９号公報には、地下
構造物の本体部を施工する際には、止水性が確保される
とともに、本体部の完成時に通水性が確保できる土留壁
の構築工法が開示されている。By the way, if the soil retaining wall with water stopping property is left in the ground, the groundwater flow is blocked, and the water vein on the downstream side of the soil retaining wall is interrupted, so that the well is withered or the ground is soiled. It causes inconvenience such as subsidence. Therefore, for example, in Japanese Unexamined Patent Publication No. 6-49839, a construction method of a retaining wall that can secure water stopping performance when constructing a main body of an underground structure and water permeability when the main body is completed. Is disclosed.
【０００４】この公報に開示されている工法では、連続
地中壁工法で土留壁が構築されるが、この土留壁を構築
する際に、掘削孔内に、中空円形ないしは角形などの有
孔管や、地山側開口部に鋼製メッシュを配置した特殊通
水枠を鉛直方向に設置しておき、この通水枠内に不透水
性で伸縮性のある筒状体を挿入して、筒状体内の水圧を
周囲の水圧よりも高くした状態で、コンクリートを打設
し、コンクリートが硬化した後に、前記筒状体を特殊通
水枠内から撤去して、有孔管や地山側開口部に配置され
た鋼製メッシュにより土留壁に通水性を与える。In the construction method disclosed in this publication, a retaining wall is constructed by a continuous underground wall method. When constructing this retaining wall, a hollow circular or square perforated pipe is formed in the excavation hole. Alternatively, a special water-permeable frame with a steel mesh placed in the ground side opening is installed in the vertical direction, and an impermeable and stretchable tubular body is inserted into this water-permeable frame to form a tubular shape. In the state where the water pressure in the body is higher than the surrounding water pressure, concrete is poured, and after the concrete hardens, the tubular body is removed from the special water-passing frame, and the perforated pipe or the ground side opening is opened. The placed steel mesh provides water retention to the retaining wall.
【０００５】特殊通水枠は、土留壁の厚み方向を貫通さ
せる大きさ、ないしは、土留壁の厚み方向の一部を置換
する大きさになっていて、内部には、砕石が充填され
る。しかしながら、このような従来の土留壁の構造に
は、以下に説明する技術的な課題があった。The special water-passing frame is sized to penetrate the earth retaining wall in the thickness direction, or to replace a part of the earth retaining wall in the thickness direction, and the inside is filled with crushed stone. However, such a structure of the conventional retaining wall has a technical problem described below.
【０００６】[0006]
【発明が解決しようとする課題】すなわち、上記公報に
開示されている土留壁の構造では、土留壁に通水性を付
与するために、土留壁の厚み方向の全部ないしは一部が
特殊枠体で置換されているので、この部分が構造上の弱
点となる恐れがあった。また、上記公報の土留壁の構築
工法では、泥水が充満された掘削構内に有孔管などを建
て込むため、有孔管の貫通孔内に泥水膜が付着して、目
詰まりを起こす恐れがあるとともに、コンクリートを打
設する際には、その内部に筒状体を挿入して、コンクリ
ートの回り込みを防いでいるが、この筒状体が有孔管な
どの通水枠体の内部側に挿入されるので、有孔管の貫通
孔内には、セメントなどが侵入して、目詰まりを起こす
恐れもあって、土留壁の通水性が著しく低下するという
問題があった。That is, in the structure of the earth retaining wall disclosed in the above publication, in order to impart water permeability to the earth retaining wall, all or a part of the thickness of the earth retaining wall is a special frame. Since it was replaced, there was a risk that this part would become a structural weak point. Further, in the construction method of the retaining wall of the above publication, since a perforated pipe or the like is built in the excavation premises filled with muddy water, a muddy water film may adhere to the through hole of the perforated pipe, causing clogging. In addition, when pouring concrete, a tubular body is inserted inside it to prevent the concrete from wrapping around, but this tubular body is placed inside the water-passing frame such as a perforated pipe. Since it is inserted, cement or the like may enter the through hole of the perforated pipe and cause clogging, resulting in a problem that the water permeability of the soil retaining wall is significantly reduced.
【０００７】さらに、上記公報に開示されている構築工
法は、土留壁を構築する際に、土留壁に通水性を付与す
る方法なので、既に構築されている土留壁に通水性を与
えることができないという問題もあった。本発明は、こ
のような従来の問題点に鑑みてなされたものであって、
第一の目的は、土留壁の性能に殆ど影響を与えることな
く、地下水流の通過が可能になる通水性を備えた土留壁
構造を提供することにある。また、第二の目的として、
土留壁の構築工事の影響により目詰まりを発生すること
がなく、しかも、既設の土留壁に対しても通水性を付与
することができる土留壁構造を提供することにある。Further, since the construction method disclosed in the above publication is a method of imparting water permeability to the earth retaining wall when constructing the earth retaining wall, it is not possible to impart water permeability to the earth retaining wall already constructed. There was also a problem. The present invention has been made in view of such conventional problems,
A first object is to provide a retaining wall structure having water permeability that allows passage of a groundwater flow without substantially affecting the performance of the retaining wall. Also, as a second purpose,
An object of the present invention is to provide a retaining wall structure which does not cause clogging due to the construction work of retaining wall and can impart water permeability to the existing retaining wall.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、対向する一対の壁部が所定の間隔を隔て
て、地中の地下水流を遮断するように構築される土留壁
の構築後に設けられる垂直ドレーン通路と、連通路と、
移送手段とを有する通水性を備えた土留壁構造であっ
て、前記垂直ドレーン通路は、前記壁部の長手方向に沿
って所定の間隔を隔て、かつ、その外側面に沿って上下
方向に延長形成され、前記連通路は、前記壁部の一方の
外側面側に設けられた前記垂直ドレーン通路と他方の外
側面側に設けられた前記垂直ドレーン通路との間を、前
記壁部間に構築される地下構造物本体部の上方で連結す
るように形成され、地下水を前記地下水流の上流側から
下流側に移送する前記移送手段を前記連通路中に設けた
ことを特徴とする。前記連通路は、両端側に設けられ、
前記垂直ドレーン通路と連通する多孔管部が設けられた
一対の垂直部分と、この垂直部分間を連結する水平部分
とを有し、地表側に埋設される前記水平部分に前記移送
手段を配置することができる。In order to achieve the above object, the present invention relates to a retaining wall constructed such that a pair of opposing wall portions are spaced apart from each other by a predetermined distance to block underground groundwater flow. Vertical drain passage, which is provided after the construction of
An earth retaining wall structure having water permeability having a transfer means, wherein the vertical drain passage is vertically spaced along a longitudinal direction of the wall portion and vertically along an outer surface thereof. The communication passage is formed between the wall portions between the vertical drain passage provided on one outer surface side of the wall portion and the vertical drain passage provided on the other outer surface side of the wall portion. The transfer means for transferring groundwater from the upstream side to the downstream side of the groundwater flow is provided in the communication passage, the transfer means being formed so as to be connected above the underground structure main body part. The communication passage is provided at both ends,
It has a pair of vertical parts provided with a perforated pipe part communicating with the vertical drain passage and a horizontal part connecting the vertical parts, and the transfer means is arranged in the horizontal part buried on the surface side. be able to.
【０００９】[0009]
【作用】上記構成の土留壁によれば、壁部の長手方向に
沿って所定の間隔を隔て、かつ、その外側面に沿って上
下方向に延びる複数の垂直ドレーン通路と、壁部の一方
の外側面側に設けられた垂直ドレーン通路と他方の外側
面側に設けられた垂直ドレーン通路との間を、壁部間に
構築される本体部の上方で連結する連通路と、連通路中
に介設され、地下水を地下水流の上流側から下流側に移
送する移送手段とを有し、これらを土留壁の壁部の構築
後に設けるので、壁部を構築する際の工事により、これ
らの通路の通水性が損なわれることがなく、既存の土留
壁にも通水性を持たせることが可能になる。また、垂直
ドレーン通路は、壁部の外側に形成し、連通路は、地下
本体部の上方に設けるので、土留壁の壁部の強度などに
影響を与えない。請求項２の構成によれば、連通路は、
両端側に設けられ、垂直ドレーン通路と連通する多孔管
部が設けられた一対の垂直部分と、この垂直部分間を連
結する水平部分とを有し、地表側に埋設される水平部分
に移送手段を配置しているので、移送手段の点検整備が
容易に行なえる。According to the soil retaining wall having the above-mentioned structure, a plurality of vertical drain passages are provided at predetermined intervals along the longitudinal direction of the wall portion and extend vertically along the outer side surface thereof, and one of the wall portions. The vertical drain passage provided on the outer surface side and the vertical drain passage provided on the other outer surface side are connected to each other above the main body portion constructed between the wall portions, and Since it has an intervening means for transferring groundwater from the upstream side to the downstream side of the groundwater flow and these are provided after the wall portion of the earth retaining wall is constructed, these passages can be constructed by construction work when constructing the wall portion. The existing soil retaining wall can be made water permeable without impairing the water permeability. Further, since the vertical drain passage is formed outside the wall and the communication passage is provided above the underground main body, it does not affect the strength of the wall of the retaining wall. According to the configuration of claim 2, the communication passage is
The transfer means has a pair of vertical portions provided on both end sides and provided with a perforated pipe portion communicating with the vertical drain passage, and a horizontal portion connecting the vertical portions, and the horizontal portion buried on the ground side. Since it is arranged, inspection and maintenance of the transfer means can be easily performed.
【００１０】[0010]
【実施例】以下、本発明の好適な実施例について、添付
図面に基づいて詳細に説明する。図１，２は、本発明に
かかる通水性を備えた土留壁構造の一実施例を示してい
る。同図に示す土留壁１０は、対向する一対の壁部１０
ａ，１０ｂが所定の間隔を隔てて、地中の地下水流１２
を遮断するように構築されている。壁部１０ａ，１０ｂ
間には、地下構造物本体部１４が構築されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. 1 and 2 show an embodiment of a retaining wall structure having water permeability according to the present invention. The retaining wall 10 shown in the figure is a pair of opposing wall portions 10.
a and 10b are separated from each other by a predetermined distance, and the underground water flow 12
Is built to shut off. Walls 10a, 10b
The underground structure main body 14 is constructed in between.
【００１１】この実施例の壁部１０ａ，１０ｂは、例え
ば、連続地中壁工法により構築された鉄筋コンクリート
製のものであって、止水性を有していて、地上から地盤
を掘削して構築され、各壁部１０ａ，１０ｂの下端は、
地盤中の不透水層に到達するように形成され、壁部１０
ａ，１０ｂ間を掘削して根切りした後に、根切り面上に
地下構造物本体部１４を構築した後にも地盤中に残置さ
れる。The walls 10a and 10b of this embodiment are made of, for example, reinforced concrete constructed by the continuous underground wall construction method, have a water stopping property, and are constructed by excavating the ground from the ground. , The lower ends of the walls 10a and 10b are
The wall portion 10 is formed so as to reach the impermeable layer in the ground.
After excavating and root cutting between a and 10b, it is left in the ground even after constructing the underground structure main body portion 14 on the root cutting surface.
【００１２】この実施例に示している地下構造物本体部
１４は、地下トンネルであって、土留壁１０の構築後に
開削工法により構築され、底版１４ａと、側版１４ｂ
と、上版１４ｃとを有しており、本体部１４の構築後に
上版１４ｃの上方が埋め戻され、土留壁１０は、地盤中
に残置される。地下水流１２は、同図においては、上下
方向に間隔をおいて二段に分かれていて、上，下地下水
流１２ａ，１２ｂは、図面の左から右に流れている。以
上のようにして、土留壁１０を構築して、壁部１０ａ，
１０ｂ間に本体部１４を構築した後に、土留壁１０に通
水性を与える垂直ドレーン通路１６，連通路１８，移送
手段（ポンプ）２０が設けられる。The underground structure main body 14 shown in this embodiment is an underground tunnel, which is constructed by an excavation method after the earth retaining wall 10 is constructed, and has a bottom slab 14a and a side slab 14b.
And an upper slab 14c, the upper part of the upper slab 14c is backfilled after the main body 14 is constructed, and the earth retaining wall 10 is left in the ground. In the figure, the groundwater flow 12 is divided into two stages at intervals in the vertical direction, and the upper and lower groundwater flows 12a and 12b flow from the left to the right of the drawing. As described above, the retaining wall 10 is constructed and the wall portion 10a,
After constructing the main body portion 14 between the 10b, a vertical drain passage 16, a communication passage 18, and a transfer means (pump) 20 for providing water permeability to the soil retaining wall 10 are provided.
【００１３】垂直ドレーン通路１６は、この実施例で
は、一対の壁部１０ａ，１０ｂの外側において、各壁部
１０ａ，１０ｂの外側面に沿うようにして、かつ、壁部
１０ａ，１０ｂの長手軸方向（図１の紙面と直交する方
向）に沿って所定の間隔を隔てて複数設けられる。な
お、垂直ドレーン通路１６は、図１においては、各壁部
１０ａ，１０ｂの外側面に接触するような状態で示して
いるが、各壁部１０ａ，１０ｂの外側面から離間した位
置に設けても問題はない。In this embodiment, the vertical drain passage 16 is arranged outside the pair of walls 10a, 10b along the outer surface of each wall 10a, 10b, and along the longitudinal axis of the walls 10a, 10b. A plurality of them are provided at predetermined intervals along the direction (direction orthogonal to the paper surface of FIG. 1). Although the vertical drain passage 16 is shown in FIG. 1 as being in contact with the outer surface of each wall 10a, 10b, it is provided at a position separated from the outer surface of each wall 10a, 10b. There is no problem.
【００１４】各垂直ドレーン通路１６は、壁部１０ａ，
１０ｂの外側面に沿って上下方向に延び、壁部１０ａ，
１０ｂを挟んで対向する一対ずつが、壁部１０ａ，１０
ｂと直交する軸線上に対向配置されている。各垂直ドレ
ーン通路１６は、地上側から掘削された円形の垂直ドレ
ーン孔１６ａと、この垂直ドレーン孔１６ａ内に充填さ
れた砕石や玉砂利などの石材１６ｂとから構成されてい
る。Each vertical drain passage 16 includes a wall portion 10a,
10b extending in the vertical direction along the outer surface of the wall 10a,
Pairs facing each other with 10b in between are wall parts 10a, 10
It is arranged so as to face the axis line orthogonal to b. Each vertical drain passage 16 is composed of a circular vertical drain hole 16a excavated from the ground side and a stone material 16b such as crushed stone or gravel filled in the vertical drain hole 16a.
【００１５】石材１６ｂを垂直ドレーン孔１６ａ内に充
填する手段としては、石材１６ｂを直接ドレーン孔１６
ａ内に投入する手段の他、例えば、筒状の多孔管内に石
材１６ｂを充填して、これを孔１６ａ内に挿入すること
や、筒状の金網内に石材１６ｂを充填して、これを孔１
６ａ内に挿入することが選択できる。なお、垂直ドレー
ン孔１６ａの断面形状は、円形に限ることはなく、例え
ば、角形や長方形であってもよい。As a means for filling the stone material 16b into the vertical drain hole 16a, the stone material 16b is directly connected to the drain hole 16a.
In addition to the means for charging into a, for example, a stone material 16b is filled in a tubular porous tube and inserted into the hole 16a, or a stone material 16b is filled in a tubular wire net, Hole 1
It can be selected to be inserted into 6a. The sectional shape of the vertical drain hole 16a is not limited to the circular shape, and may be, for example, a rectangular shape or a rectangular shape.
【００１６】この実施例では、垂直ドレーン通路１６
は、下端側が下地下水流１２ｂよりも下方に突出する位
置にあって、上端側が上地下水流１６ａよりも上方に突
出する位置になるように、垂直ドレーン孔１６ａの上部
側が埋め戻されている。一方、連通路１８は、壁部１０
ａ，１０ｂを挟んで対向する一対の垂直ドレーン通路１
６と同軸上にあって、これらを連通するように形成され
ている。In this embodiment, the vertical drain passage 16
Has the upper portion of the vertical drain hole 16a backfilled so that the lower end side is located below the lower groundwater flow 12b and the upper end side is located above the upper groundwater flow 16a. On the other hand, the communication passage 18 includes the wall portion 10.
A pair of vertical drain passages 1 facing each other with a and 10b in between.
6 is coaxial with and formed so as to communicate these.
【００１７】この連通路１８は、この実施例では、両端
が開口した通水用パイプ１８ａから構成されていて、パ
イプ１８ａは、両端側に設けられた一対の垂直部分１８
ｂ，１８ｂと、この垂直部分１８ｂ，１８ｂの上端側を
連結する水平部分１８ｃとを有する略逆凹状に屈曲形成
されている。この通水用パイプ１８ａは、壁部１０ａ，
１０ｂ間に構築された地下構造物本体部１４の上方にお
いて、壁部１０ａ，１０ｂの上端側を迂回するようにし
て水平部分１８ｃが地表に近い位置に埋設されている。In this embodiment, the communication passage 18 is composed of a water passage pipe 18a having both ends open, and the pipe 18a is provided with a pair of vertical portions 18 provided at both ends.
B and 18b and a horizontal portion 18c that connects the upper ends of the vertical portions 18b and 18b are bent in a substantially inverted concave shape. The water passage pipe 18a includes the wall portion 10a,
Above the underground structure main body 14 constructed between 10b, a horizontal portion 18c is buried near the ground surface so as to bypass the upper ends of the walls 10a and 10b.
【００１８】通水用パイプ１８ａの両端側に設けられた
垂直部分１８ｂ，１８ｂは、壁部１０ａ，１０ｂを挟ん
で対向する一対の垂直ドレーン通路１６の石材１６ｂ中
に挿入されていて、この挿入された部分には、それぞれ
多孔管部１８ｄ，１８ｄとなっている。なお、この連通
路１８は、対向する一対の垂直ドレーン通路１６に全て
対応させて設ける必要はなく、適宜箇所に複数設けても
よい。The vertical portions 18b, 18b provided on both ends of the water passage pipe 18a are inserted into the stone materials 16b of the pair of vertical drain passages 16 facing each other with the wall portions 10a, 10b interposed therebetween. The perforated pipe portions 18d and 18d are respectively formed in the formed portions. The communication passages 18 do not have to be provided corresponding to all the pair of facing vertical drain passages 16, and a plurality of communication passages 18 may be provided at appropriate places.
【００１９】また、連通路１８は、対向する一対の垂直
ドレーン通路１６と必ずしも同軸上に設ける必要はな
く、偏心した位置にあっても差し支えはない。また、多
孔管部１８ｄには、細かい土砂の侵入を防止するフィル
ターを設けてもよい。そして、連通路１８の水平部分１
８ｃに移送手段（ポンプ）２０が設けられている。移送
手段（ポンプ）２０は、地下水流１２の地下水を上流側
の垂直ドレーン通路１６から、連通路１８を介して下流
側の垂直ドレーン通路１６側に移送するものであって、
その設置箇所は、連通路１８の途中であればどこに設け
ていよいが、地表に近い水平部分１６ｃに設けておく
と、その点検や整備などが容易にできるので望ましい。Further, the communication passage 18 does not necessarily have to be provided coaxially with the pair of opposed vertical drain passages 16, and may be located at an eccentric position. Further, a filter for preventing intrusion of fine earth and sand may be provided on the porous tube portion 18d. Then, the horizontal portion 1 of the communication passage 18
A transfer means (pump) 20 is provided at 8c. The transfer means (pump) 20 transfers the groundwater of the groundwater stream 12 from the upstream vertical drain passage 16 to the downstream vertical drain passage 16 via the communication passage 18.
The installation place may be provided anywhere in the communication passage 18, but it is preferable to provide it on the horizontal portion 16c close to the ground because the inspection and maintenance can be easily performed.
【００２０】さて、以上のように構成された土留壁１０
においては、対向形成された一対の壁部１０ａ，１０ｂ
の長手方向に沿って所定の間隔を隔て、かつ、その外側
面に沿って上下方向に延びる複数の垂直ドレーン通路１
６と、壁部１０ａ，１０ｂ間に渡設された連通路１８
と、地下水の移送手段（ポンプ）２０とを有しているの
で、土留壁１０で遮断された地下水流１２は、移送手段
（ポンプ）２０を駆動すると、地下水が上流側の垂直ド
レーン通路１６から連通路１８を介して下流側の垂直ド
レーン通路１６に流れ込み、下流側の地下水流１２へと
流通する。Now, the retaining wall 10 constructed as described above.
In, the pair of wall portions 10a and 10b formed to face each other.
A plurality of vertical drain passages 1 which are vertically spaced apart from each other along a longitudinal direction of the
6 and the communication passage 18 provided between the walls 10a and 10b
And the groundwater transfer means (pump) 20 are provided, the groundwater flow 12 blocked by the soil retaining wall 10 drives the transfer means (pump) 20 so that the groundwater flows from the vertical drain passage 16 on the upstream side. It flows into the vertical drain passage 16 on the downstream side via the communication passage 18 and flows into the groundwater flow 12 on the downstream side.
【００２１】このようにして地下水流１２を流通させる
と、地下水流１２を遮断するようにして設けられた土留
壁１０の下流側へも地下水が供給されるので、土留壁１
０の下流側の井戸枯れや地盤沈下といった弊害が回避さ
れる。このとき、本実施例の土留壁構造では、土留壁１
０の壁部１０ａ，１０ｂの構築後に、土留壁１０に通水
性を付与する垂直ドレーン通路１６，連通路１８，移送
手段（ポンプ）２０を設けるので、壁部１０ａ，１０ｂ
を構築する際の工事により、これらの通路の通水性が損
なわれることがなく、既存の土留壁にも通水性を持たせ
ることが可能になる。When the groundwater flow 12 is circulated in this manner, the groundwater is also supplied to the downstream side of the earth retaining wall 10 provided so as to block the groundwater flow 12, so that the earth retaining wall 1
The problems such as well withering and ground subsidence on the downstream side of 0 are avoided. At this time, in the retaining wall structure of this embodiment, the retaining wall 1
Since the vertical drain passage 16, the communication passage 18 and the transfer means (pump) 20 for imparting water permeability to the soil retaining wall 10 are provided after the construction of the wall portions 10a, 10b of 0, the wall portions 10a, 10b.
Due to the construction work, the water permeability of these passages will not be impaired, and the existing retaining wall will also be water permeable.
【００２２】また、垂直ドレーン通路１６は、壁部１０
ａ，１０ｂの外側に形成し、連通路１８は、地下本体部
１４の上方に設けるので、壁部１０ａ，１０ｂの強度な
どに影響を与えない。なお、上記実施例では、土留壁１
０を連続地中壁工法で構築する場合を例示したが、本発
明の実施は、これに限定されることはなく、土留壁１０
の構築工法に拘束されることはない。Further, the vertical drain passage 16 is provided in the wall portion 10.
Since it is formed outside the a and 10b, and the communication passage 18 is provided above the underground main body 14, it does not affect the strength of the walls 10a and 10b. In the above embodiment, the retaining wall 1
Although the case where 0 is constructed by the continuous underground wall construction method is exemplified, the practice of the present invention is not limited to this, and the retaining wall 10 is not limited thereto.
Is not bound by the construction method of.
【００２３】[0023]
【発明の効果】以上、実施例で詳細に説明したように、
本発明にかかる通水性を備えた土留壁構造によれば、土
留壁の性能に影響を及ぼすことなく通水性を付与するこ
とができる。また、本発明にかかる通水性を備えた土留
壁構造によれば、土留壁を構築する際の工事により、目
詰まりを起こすことがなく、十分な通水性が確保できる
とともに、既設の土留壁にも通水性を持たせることがで
きる。As described above in detail in the embodiments,
According to the soil retaining wall structure having water permeability according to the present invention, water permeability can be imparted without affecting the performance of the soil retaining wall. Further, according to the retaining wall structure having water permeability according to the present invention, due to the construction at the time of constructing the retaining wall, it is possible to secure sufficient water permeability without causing clogging, and to the existing retaining wall. Can also be water permeable.
【図１】本発明にかかる通水性を備えた土留壁の一実施
例を示す断面説明図である。FIG. 1 is a cross-sectional explanatory view showing an example of an earth retaining wall provided with water permeability according to the present invention.
【図２】図１の要部水平断面図である。FIG. 2 is a horizontal sectional view of a main part of FIG.
１０ 土留壁 １０ａ，１０ｂ 壁部 １２ 地下水流 １４ 本体部 １４ａ 底版 １４ｂ 側版 １４ｃ 上版 １６ 垂直ドレーン通路 １６ａ 垂直ドレーン孔 １６ｂ 石材 １８ 連通路 １８ａ 通水用パイプ １８ｂ 垂直部分 １８ｃ 水平部分 １８ｄ 多孔管部 ２０ 移送手段（ポンプ） 10 retaining wall 10a, 10b wall part 12 groundwater flow 14 body part 14a bottom plate 14b side plate 14c upper plate 16 vertical drain passage 16a vertical drain hole 16b stone 18 communication passage 18a water pipe 18b vertical portion 18c horizontal portion 18d perforated pipe portion 20 Transfer means (pump)
Claims (2)
て、地中の地下水流を遮断するように構築される土留壁
の構築後に形成される垂直ドレーン通路と、連通路と、
移送手段とを有する通水性を備えた土留壁構造であっ
て、 前記垂直ドレーン通路は、前記壁部の長手方向に沿って
所定の間隔を隔て、かつ、その外側面に沿って上下方向
に延長形成され、 前記連通路は、前記壁部の一方の外側面側に設けられた
前記垂直ドレーン通路と他方の外側面側に設けられた前
記垂直ドレーン通路との間を、前記壁部間に構築される
地下構造物本体部の上方で連結するように形成され、 地下水を前記地下水流の上流側から下流側に移送する前
記移送手段を前記連通路中に設けたことを特徴とする通
水性を備えた土留壁構造。1. A vertical drain passage formed after construction of a retaining wall constructed so as to block groundwater flow in the ground by a pair of opposing wall portions with a predetermined interval, and a communication passage,
A soil retaining wall structure having water permeability having a transfer means, wherein the vertical drain passage is vertically spaced along a longitudinal direction of the wall portion and vertically along an outer side surface thereof. The communication passage is formed between the wall portions between the vertical drain passage provided on one outer surface side of the wall portion and the vertical drain passage provided on the other outer surface side of the wall portion. The water transfer means is formed so as to be connected above the underground structure main body, and the transfer means for transferring groundwater from the upstream side to the downstream side of the groundwater flow is provided in the communication passage. The retaining wall structure provided.
垂直ドレーン通路と連通する多孔管部が設けられた一対
の垂直部分と、この垂直部分間を連結する水平部分とを
有し、 地表側に埋設される前記水平部分に前記移送手段を配置
したことを特徴とする請求項１記載の通水性を備えた土
留壁構造。2. The communication passage has a pair of vertical portions provided on both end sides and provided with a perforated pipe portion communicating with the vertical drain passage, and a horizontal portion connecting the vertical portions. The earth retaining wall structure with water permeability according to claim 1, wherein the transfer means is arranged in the horizontal portion buried on the surface side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15129295A JP2900842B2 (en) | 1995-06-19 | 1995-06-19 | Earth retaining wall structure with water permeability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15129295A JP2900842B2 (en) | 1995-06-19 | 1995-06-19 | Earth retaining wall structure with water permeability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH093900A true JPH093900A (en) | 1997-01-07 |
| JP2900842B2 JP2900842B2 (en) | 1999-06-02 |
Family
ID=15515500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15129295A Expired - Fee Related JP2900842B2 (en) | 1995-06-19 | 1995-06-19 | Earth retaining wall structure with water permeability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2900842B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104988993A (en) * | 2015-07-17 | 2015-10-21 | 中铁十六局集团北京轨道交通工程建设有限公司 | Steel support node structure and construction method of steel support node structure |
| CN111139837A (en) * | 2020-01-04 | 2020-05-12 | 中亿丰建设集团股份有限公司 | Method for simultaneously excavating multiple base pits at crossed subway in soft soil area |
| CN114673168A (en) * | 2022-05-05 | 2022-06-28 | 温州神光建设工程有限公司 | Foundation pit maintenance device for house building and construction method thereof |
-
1995
- 1995-06-19 JP JP15129295A patent/JP2900842B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104988993A (en) * | 2015-07-17 | 2015-10-21 | 中铁十六局集团北京轨道交通工程建设有限公司 | Steel support node structure and construction method of steel support node structure |
| CN111139837A (en) * | 2020-01-04 | 2020-05-12 | 中亿丰建设集团股份有限公司 | Method for simultaneously excavating multiple base pits at crossed subway in soft soil area |
| CN114673168A (en) * | 2022-05-05 | 2022-06-28 | 温州神光建设工程有限公司 | Foundation pit maintenance device for house building and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2900842B2 (en) | 1999-06-02 |
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