JPH116140A - Draining method for soft soil and extensible draining material - Google Patents
Draining method for soft soil and extensible draining materialInfo
- Publication number
- JPH116140A JPH116140A JP15671297A JP15671297A JPH116140A JP H116140 A JPH116140 A JP H116140A JP 15671297 A JP15671297 A JP 15671297A JP 15671297 A JP15671297 A JP 15671297A JP H116140 A JPH116140 A JP H116140A
- Authority
- JP
- Japan
- Prior art keywords
- water
- permeable
- members
- longitudinal direction
- flow path
- 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]
【発明の属する技術分野】本発明は、軟弱地盤等の軟弱
土砂からの排水を促進すると共に、不等沈下等による排
水性能の低下を防止する軟弱土砂の排水工法、および埋
設箇所の沈下に追従して伸長する伸長式ドレーン材に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for draining soft soil, which promotes drainage from soft soil such as soft ground, prevents deterioration of drainage performance due to uneven settlement, and follows settlement of a buried site. The present invention relates to an elongate drain material that elongates by extension.
【０００２】[0002]
【従来の技術】地盤改良のサンドマット工法において
は、図１９に示すように、軟弱地盤３上に砂を積層して
水平なサンドマット５を形成し、サンドマット５上に埋
立土砂７を積載することにより、サンドマット５を介し
て軟弱地盤３から排水するようにしている。なお、図に
おいて、１は支持地盤である。2. Description of the Related Art In a sand mat method for improving a ground, as shown in FIG. 19, sand is laminated on a soft ground 3 to form a horizontal sand mat 5, and a landfill soil 7 is loaded on the sand mat 5. By doing so, the water is drained from the soft ground 3 through the sand mat 5. In the drawing, reference numeral 1 denotes a supporting ground.
【０００３】また、水平ボードドレーン工法において
は、図２１に示すように、透水性を有する長尺板状のド
レーン材を、サンドマット５内に水平に敷設して水平ボ
ードドレーン９を形成し、軟弱地盤３からの排水を促進
している。なお、上述のサンドマット工法と同一部分に
は同一符号を付して説明を省略する。In the horizontal board drain method, as shown in FIG. 21, a long plate-shaped drain material having water permeability is laid horizontally in a sand mat 5 to form a horizontal board drain 9. It promotes drainage from soft ground 3. The same parts as those in the above-described sand mat method are denoted by the same reference numerals, and description thereof will be omitted.
【０００４】[0004]
【発明が解決しようとする課題】サンドマット工法にお
いては、図２０に示すように、軟弱地盤３の不等沈下に
よりサンドマット５が引き伸ばされた場合や、埋立土砂
７の投入時にサンドマット５に衝撃が加えられた場合
に、サンドマット５が分断されて水みちが途切れてしま
い、サンドマット５を介しての排水が困難になるという
問題があった。また、水平ボードドレーン工法において
も、不等沈下によって、ドレーン材が長手方向へ引き伸
ばされて断面が潰れ、水平ボードドレーン９を介しての
排水性能が低下するという問題があった。In the sand mat method, as shown in FIG. 20, when the sand mat 5 is stretched due to uneven settlement of the soft ground 3, or when the landfill soil 7 is charged, the sand mat 5 When an impact is applied, there is a problem that the sand mat 5 is divided and the water path is interrupted, and drainage through the sand mat 5 becomes difficult. Also, in the horizontal board drain method, there is a problem that the drain material is stretched in the longitudinal direction due to uneven settlement, the cross section is crushed, and the drainage performance through the horizontal board drain 9 is reduced.
【０００５】本発明は、このような従来の問題に鑑み、
軟弱土砂の不等沈下や埋立土砂の投入時の衝撃等により
排水性能が低下することのない軟弱土砂の排水工法およ
び伸長式ドレーン材の提供を目的としたものである。The present invention has been made in view of such a conventional problem,
It is an object of the present invention to provide a method for draining soft soil and a stretchable drain material, which do not cause deterioration in drainage performance due to uneven settlement of soft soil and impacts at the time of injecting landfill.
【０００６】[0006]
【課題を解決するための手段】上述の如き従来の問題を
解決し、所期の目的を達成するための本発明に係る軟弱
土砂の排水工法の特徴は、長手方向に連通して両端が開
口した流路と一部もしくは全部が透水性の外壁部とを備
えた複数の透水部材からなり、前記透水部材が、長手方
向に前記流路を連続させて相対的に移動可能に接続さ
れ、前記透水部材が相対的に移動することにより、前記
流路の連通状態を維持しつつ長手方向に伸長可能に形成
されてなる伸長式ドレーン材を、伸長可能な状態で、軟
弱土砂上又は軟弱土砂内に水平に埋設することにある。The feature of the method for draining soft earth and sand according to the present invention for solving the above-mentioned conventional problems and achieving the intended object is that the two ends communicate with each other in the longitudinal direction and are open at both ends. A plurality of water-permeable members provided with a flow path and a part or the whole of which has a water-permeable outer wall portion, wherein the water-permeable member is connected to be relatively movable by continuing the flow path in the longitudinal direction, By the relative movement of the water permeable member, the extensible drain material formed to be extendable in the longitudinal direction while maintaining the communication state of the flow path is stretched in a stretchable state on soft soil or in soft soil. Buried horizontally.
【０００７】なお、軟弱地盤と埋立土砂との間にサンド
マットが形成される場合には、伸長式ドレーン材を、サ
ンドマット内に埋設することが好ましい。[0007] When a sand mat is formed between the soft ground and the landfill soil, it is preferable to embed the stretchable drain material in the sand mat.
【０００８】また、本発明に係る伸長式ドレーン材の特
徴は、長手方向に連通して両端が開口した流路と一部も
しくは全部が透水性の外壁部とを備えた複数の透水部材
からなり、前記透水部材が、長手方向に前記流路を連続
させて相対的に移動可能に接続され、前記透水部材が相
対的に移動することにより、前記流路の連通状態を維持
しつつ長手方向に伸長可能に形成されたことにある。A feature of the extendable drain material according to the present invention is that it comprises a plurality of water-permeable members having a flow path communicating in the longitudinal direction and having open ends at both ends and a partially or entirely water-permeable outer wall portion. The water permeable member is connected to the flow path in the longitudinal direction so as to be relatively movable by continuing the flow path, and the water permeable member relatively moves, thereby maintaining the communication state of the flow path in the longitudinal direction. It has been formed to be extensible.
【０００９】なお、透水部材は、両端が開口した筒状に
成形され、一方の前記透水部材の端部を他方の前記透水
部材の端部にスライド可能に挿入した形で、相対的に移
動可能に接続されていることが好ましく、あるいは、透
水部材は、両端が開口した筒状の複数の継手部材を介し
て、前記透水部材の端部を前記継手部材の端部にスライ
ド可能に挿入した形で、相対的に移動可能に接続されて
いることが好ましい。The water permeable member is formed in a cylindrical shape having both ends opened, and is relatively movable in a form in which one end of the water permeable member is slidably inserted into the end of the other water permeable member. It is preferable that the end of the water permeable member is slidably inserted into the end of the joint member through a plurality of tubular joint members having both ends opened. It is preferable that they are connected so as to be relatively movable.
【００１０】この場合、透水部材又は継手部材には、鉤
状又はテーパー状の抜止部が設けられていることが好ま
しく、あるいは、透水部材相互間又は透水部材と継手部
材間は、紐状又は帯状の抜止部材を介して連結されてい
ることが好ましい。In this case, it is preferable that a hook-like or tapered retaining portion is provided on the water-permeable member or the joint member, or a string-like or band-like shape is formed between the water-permeable members or between the water-permeable member and the joint member. Are preferably connected via the retaining member.
【００１１】また、透水部材は、両端が開口した伸長可
能な筒状の複数の伸長部材を介して、前記透水部材の端
部と前記伸長部材の端部とを固定した形で、相対的に移
動可能に接続されていてもよい。Further, the water permeable member is relatively fixed in such a manner that an end of the water permeable member and an end of the expansion member are fixed via a plurality of extendable tubular expansion members having both ends opened. It may be movably connected.
【００１２】[0012]
【発明の実施の形態】次に本発明の実施の形態を図面に
ついて説明する。図１〜６は本発明の第１実施形態を示
しており、図において、１０は伸長式ドレーン材であ
り、伸長式ドレーン材１０は、所定長さの多数の透水部
材１１、１２、１２、１１…が、相互にスライドする形
で、相対的に移動可能に接続されて、長手方向に伸長可
能な長尺状に形成されている。Embodiments of the present invention will now be described with reference to the drawings. 1 to 6 show a first embodiment of the present invention. In the drawings, reference numeral 10 denotes an extendable drain material, and the extendable drain material 10 includes a plurality of water-permeable members 11, 12, 12, 11 are connected to each other so as to be relatively slidable in a mutually sliding manner, and formed in an elongated shape that can be extended in the longitudinal direction.
【００１３】透水部材１１、１２は、それぞれ、可撓
性、透水性を有する微小空隙を備えた合成樹脂材、紙等
からなり、図１に示すように、両端が開口した円形断面
等の筒状に成形されており、中央空洞部分により長手方
向に連通して両端を開口させた流路が形成され、周壁部
により透水性の外壁部が形成されている。Each of the water-permeable members 11 and 12 is made of a synthetic resin material, paper or the like provided with minute gaps having flexibility and water permeability. As shown in FIG. The central cavity portion forms a flow path that communicates in the longitudinal direction and opens at both ends, and the peripheral wall portion forms a water-permeable outer wall portion.
【００１４】そして、透水部材１１は比較的大径に形成
され、透水部材１２は比較的小径に形成されており、大
径の透水部材１１の一端側に小径の透水部材１２の一端
側がスライド自在に挿入されている。また、図３、４に
示すように、透水部材１１、１２の端部には、相互に係
合する内向鍔状、外向鍔状の抜止部１１ａ、１２ａが固
設されている。また、透水部材１１の抜止部１１ａと透
水部材１２の外周面の隙間には、土砂流入防止材１９が
装着されており、土砂流入防止材１９は、スポンジ等の
弾性材からなり、透水部材１１、１２がスライドする際
には、透水部材１２が摺動するようになっている。ま
た、透水部材１１、１２の他端には、図１に示すよう
に、フランジ状の連結部１１ｂ、１２ｂが固設されてお
り、ボルト、ナット等を介して、別の透水部材１１、１
２の端部と固定されるようになっている。なお、抜止部
１１ａ、１２ａは周壁部と一体的に成形され、透水部材
１１に透水部材１２を挿入した後に、連結部１１ｂ、１
２ｂが周壁部に固着される。The water permeable member 11 has a relatively large diameter, and the water permeable member 12 has a relatively small diameter. One end of the large diameter water permeable member 11 is slidable on one end side of the small diameter water permeable member 12. Has been inserted. Also, as shown in FIGS. 3 and 4, at the ends of the water-permeable members 11 and 12, inwardly and outwardly engaging stopper portions 11a and 12a that are engaged with each other are fixed. Further, a sediment inflow prevention member 19 is mounted in a gap between the retaining portion 11a of the water permeation member 11 and the outer peripheral surface of the water permeation member 12, and the sediment inflow prevention member 19 is made of an elastic material such as sponge. , 12 slide, the water permeable member 12 slides. As shown in FIG. 1, flange-shaped connecting portions 11b and 12b are fixed to the other ends of the water-permeable members 11 and 12, respectively.
2 is fixed to the end. The retaining portions 11a and 12a are formed integrally with the peripheral wall portion, and after the water permeable member 12 is inserted into the water permeable member 11, the connection portions 11b and 1a are formed.
2b is fixed to the peripheral wall.
【００１５】そして、多数の透水部材１１、１２…が、
一端側を相互にスライド自在に接続され、他端を相互に
固定された形で、大径の透水部材１１、１１と小径の透
水部材１２、１２を交互に配置して、相対的に移動可能
に接続されており、これらの透水部材１１、１２、１
２、１１…の流路（中央空洞部分）が長手方向に連続し
ている。従って、伸長式ドレーン材１０は、図２に示す
ように、大径の透水部材１１と小径の透水部材１２がス
ライドすることにより、透水部材１１、１２、１２、１
１…が相対的に移動し、これによって、流路を潰すこと
なく流路の連通状態を維持しつつ、長手方向に伸縮可能
になっている。なお、鍔状の抜止部１１ａ、１２ａの係
合により透水部材１１、１２の接続状態は確実に維持さ
れる。.. And a number of water-permeable members 11, 12.
One end side is slidably connected to each other, and the other end is fixed to each other. The large-diameter water-permeable members 11, 11 and the small-diameter water-permeable members 12, 12 are alternately arranged and relatively movable. And these water-permeable members 11, 12, 1
2, 11,... (Central hollow portion) are continuous in the longitudinal direction. Accordingly, as shown in FIG. 2, the stretchable drain member 10 slides between the large-diameter water-permeable member 11 and the small-diameter water-permeable member 12, thereby causing the water-permeable members 11, 12, 12, and 1 to slide.
Move relative to each other, so that the flow path can be expanded and contracted in the longitudinal direction while maintaining the communication state of the flow path without crushing the flow path. In addition, the connection state of the water-permeable members 11 and 12 is reliably maintained by the engagement of the flange-shaped retaining portions 11a and 12a.
【００１６】このように構成される伸長式ドレーン材１
０は、図５に示すように、軟弱地盤３と埋立土砂７との
間の水平なサンドマット５内に埋設することによって、
軟弱地盤３からサンドマット５へ浸透した水を、透水部
材１１、１２…の透水性の外壁部（周壁部）を介して内
部に浸透させ、長手方向に連続した流路（中央空洞部
分）を介して排水することができる。The stretchable drain member 1 constructed as described above
0 is buried in a horizontal sand mat 5 between the soft ground 3 and the landfill soil 7 as shown in FIG.
The water permeated into the sand mat 5 from the soft ground 3 penetrates into the inside through the water-permeable outer walls (peripheral walls) of the water-permeable members 11, 12,. Can be drained through.
【００１７】そして、伸長式ドレーン材１０は、伸び切
っていない伸長可能な状態、即ち、大径の透水部材１１
に小径の透水部材１２の大部分を挿入した収縮状態で埋
設しておくことによって、図６に示すように、軟弱地盤
３が圧密により大きく不等沈下すると、伸長式ドレーン
材１０のそれぞれの部分において、それぞれの埋設箇所
の変動に応じて、大径の透水部材１１から小径の透水部
材１２が引き出されて、流路の連通状態を維持しつつ必
要なだけ伸長する。従って、軟弱地盤３の変動に好適に
追従することができ、サンドマット５が分断されても、
伸長式ドレーン材１０を介してサンドマット５の分断さ
れた部分が相互に連絡され、不等沈下後も軟弱地盤３か
ら好適に排水することができる。The stretchable drain member 10 is in a stretchable state that is not fully stretched, that is, a large-diameter water-permeable member 11.
When the soft ground 3 is greatly unequally settled due to consolidation as shown in FIG. In accordance with the above, the small-diameter water-permeable member 12 is pulled out from the large-diameter water-permeable member 11 in accordance with the fluctuation of each buried portion, and extends as necessary while maintaining the communication state of the flow path. Therefore, it is possible to appropriately follow the fluctuation of the soft ground 3, and even if the sand mat 5 is divided,
The divided portions of the sand mat 5 are connected to each other via the extendable drain material 10, and can be drained from the soft ground 3 even after uneven settlement.
【００１８】図７〜９は本発明の第２実施形態を示して
おり、図において、２０は伸長式ドレーン材であり、伸
長式ドレーン材２０は、所定長さの多数の透水部材２
１、２２、２２、２１…が、相互にスライドする形で、
相対的に移動可能に接続されて、長手方向に伸長可能な
長尺状に形成されている。FIGS. 7 to 9 show a second embodiment of the present invention. In the drawings, reference numeral 20 denotes an extendable drain material, and the extendable drain material 20 comprises a plurality of water-permeable members 2 having a predetermined length.
1, 22, 22, 21 ... slide in each other,
It is relatively movably connected and formed in an elongated shape that can be extended in the longitudinal direction.
【００１９】透水部材２１、２２は、それぞれ、可撓
性、透水性を有する微小空隙を備えた合成樹脂材、紙等
からなり、図７に示すように、両端が開口した円形断面
等の筒状に成形されており、中央空洞部分により長手方
向に連通して両端を開口させた流路が形成され、周壁部
により透水性の外壁部が形成されている。Each of the water-permeable members 21 and 22 is made of a synthetic resin material, paper or the like provided with minute gaps having flexibility and water permeability. As shown in FIG. The central cavity portion forms a flow path that communicates in the longitudinal direction and opens at both ends, and the peripheral wall portion forms a water-permeable outer wall portion.
【００２０】そして、透水部材２１は比較的大径に形成
され、透水部材２２は比較的小径に形成されており、大
径の透水部材２１の一端側に小径の透水部材２２の一端
側がスライド自在に挿入されている。また、透水部材２
１の内周面、透水部材２２の外周面は相互に係合するテ
ーパー状に形成されており、周壁部が抜止部を兼ねてい
る。また、図９に示すように、透水部材２１の内周面と
透水部材２２の外周面の隙間には、土砂流入防止材２９
が装着されており、土砂流入防止材２９は、スポンジ等
の弾性材からなり、透水部材２１、２２がスライドする
際には、膨脹、収縮するようになっている。また、透水
部材２１、２２の他端には、図７に示すように、フラン
ジ状の連結部２１ｂ、２２ｂが固設されており、ボル
ト、ナット等を介して、別の透水部材２１、２２の端部
と固定されるようになっている。The water permeable member 21 is formed with a relatively large diameter, and the water permeable member 22 is formed with a relatively small diameter. One end of the small diameter water permeable member 22 is slidable on one end of the large diameter water permeable member 21. Has been inserted. In addition, the water permeable member 2
The inner peripheral surface 1 and the outer peripheral surface of the water permeable member 22 are formed in a tapered shape to engage with each other, and the peripheral wall portion also serves as a retaining portion. As shown in FIG. 9, a gap between the inner peripheral surface of the water permeable member 21 and the outer peripheral surface of the water permeable member 22 is
The earth and sand inflow prevention member 29 is made of an elastic material such as a sponge, and expands and contracts when the water-permeable members 21 and 22 slide. As shown in FIG. 7, flange-like connecting portions 21b and 22b are fixed to the other ends of the water-permeable members 21 and 22, respectively, and the other water-permeable members 21 and 22 are connected via bolts and nuts. Is fixed to the end.
【００２１】そして、多数の透水部材２１、２２…が、
一端側を相互にスライド自在に接続され、他端側を相互
に固定された形で、大径の透水部材２１、２１と小径の
透水部材２２、２２を交互に配置して、相対的に移動可
能に接続されており、これらの流路（中央空洞部分）が
長手方向に連続している。従って、伸長式ドレーン材２
０は、図８に示すように、大径の透水部材２１と小径の
透水部材２２がスライドすることにより、透水部材２
１、２２、２２、２１…が相対的に移動し、これによっ
て、流路を潰すことなく流路の連通状態を維持しつつ、
長手方向に伸縮可能になっている。なお、テーパー状の
周壁部（抜止部）の係合により透水部材２１、２２の接
続状態は確実に維持される。.. And a number of water-permeable members 21, 22.
The large-diameter water-permeable members 21 and 21 and the small-diameter water-permeable members 22 and 22 are alternately arranged with one end side slidably connected to each other and the other end side fixed to each other, and relatively moved. The channels (the central cavity) are connected in the longitudinal direction. Therefore, the extension type drain material 2
0, as shown in FIG. 8, the large-diameter water-permeable member 21 and the small-diameter water-permeable member 22 slide, and
Are relatively moved, thereby maintaining the communication state of the flow path without crushing the flow path.
It can be extended and contracted in the longitudinal direction. The connection between the water-permeable members 21 and 22 is reliably maintained by the engagement of the tapered peripheral wall portion (retaining portion).
【００２２】このように構成される伸長式ドレーン材２
０は、前述の伸長式ドレーン材１０と同様に、軟弱地盤
と埋立土砂との間の水平なサンドマット内に埋設するこ
とによって、軟弱地盤からサンドマットへ浸透した水
を、透水部材２１、２２…の透水性の外壁部（周壁部）
を介して内部に浸透させ、長手方向に連続した流路（中
央空洞部分）を介して排水することができる。The stretchable drain member 2 constructed as described above
0, as in the case of the above-mentioned stretchable drain material 10, by burying in the horizontal sand mat between the soft ground and the landfill soil, the water permeated from the soft ground to the sand mat is permeable to the water-permeable members 21, 22. … Permeable outer wall (peripheral wall)
And can be drained through a flow path (central hollow portion) continuous in the longitudinal direction.
【００２３】そして、伸長式ドレーン材２０は、伸び切
っていない伸長可能な状態、即ち、大径の透水部材２１
に小径の透水部材２２の大部分を挿入した収縮状態で埋
設しておくことによって、軟弱地盤が圧密により大きく
不等沈下すると、伸長式ドレーン材２０のそれぞれの部
分において、それぞれの埋設箇所の変動に応じて、大径
の透水部材２１から小径の透水部材２２が引き出され
て、流路の連通状態を維持しつつ必要なだけ伸長する。
従って、軟弱地盤の変動に好適に追従することができ、
サンドマットが分断されても、伸長式ドレーン材２０を
介してサンドマットの分断された部分が相互に連絡さ
れ、不等沈下後も軟弱地盤から好適に排水することがで
きる。The stretchable drain member 20 is in a stretchable state that is not fully stretched, that is, a large-diameter water-permeable member 21.
When the soft ground is largely unequally settled due to compaction by embedding the small-diameter water-permeable member 22 in a contracted state in which most of the small-diameter water-permeable members 22 are inserted, the fluctuation of each embedding point in each part of the extendable drain material 20 Accordingly, the small-diameter water-permeable member 22 is pulled out from the large-diameter water-permeable member 21 and extends as needed while maintaining the communication state of the flow path.
Therefore, it is possible to appropriately follow the fluctuation of the soft ground,
Even if the sand mat is divided, the divided portions of the sand mat are communicated with each other via the extendable drain material 20, and can be drained from the soft ground even after uneven settlement.
【００２４】図１０〜１４は本発明の第３実施形態を示
している。図において、３０は伸長式ドレーン材であ
り、伸長式ドレーン材３０は、所定長さの多数の透水部
材３１、３１…が、これらとスライドする多数の継手部
材３４、３４…を介して、相対的に移動可能に接続され
て、長手方向に伸長可能な長尺状に形成されている。FIGS. 10 to 14 show a third embodiment of the present invention. In the drawing, reference numeral 30 denotes an extendable drain member. The extendable drain member 30 is formed by a plurality of water-permeable members 31, 31... Are movably connected to each other and formed in an elongated shape that can be extended in the longitudinal direction.
【００２５】透水部材３１は、構造体３２とフィルター
３３、３３とをもって、偏平な矩形断面の板状に形成さ
れている。構造体３２は、可撓性を有する合成樹脂材等
からなり、図１４に示すように、複数の溝が並列して長
手方向に連通して設けられている。また、フィルター３
３は、可撓性、透水性を有する微小空隙を備えた合成樹
脂材、紙等からなり、シート状に成形されて、構造体３
２の上下両側に溝の開口側を覆う形で固着されている。
そして、溝とフィルター３３により長手方向に連通して
両端を開口させた複数の流路が形成され、フィルター３
３により透水性の外壁部が形成されている。The water permeable member 31 is formed in a flat rectangular cross section with a structure 32 and filters 33 and 33. The structure 32 is made of a flexible synthetic resin material or the like, and is provided with a plurality of grooves arranged in parallel in the longitudinal direction as shown in FIG. Filter 3
Reference numeral 3 denotes a structure made of a synthetic resin material, paper, or the like having fine voids having flexibility and water permeability, and formed into a sheet shape.
2 is fixed to the upper and lower sides so as to cover the opening side of the groove.
Then, a plurality of flow paths having both ends opened by communicating with each other in the longitudinal direction by the groove and the filter 33 are formed.
3 forms a water-permeable outer wall portion.
【００２６】また、継手部材３４は、可撓性、不透水性
を有する合成樹脂材等からなり、図１３に示すように、
偏平な矩形断面で両端が開口した筒状に成形されてい
る。そして、継手部材３４の内部には、複数のスペーサ
ー３６、３６…が、透水部材３１の流路（溝）に対応し
て並列して設けられている。スペーサー３６は、可撓性
を有する合成樹脂材等からなり、Ｉ形断面の棒状に成形
されており、継手部材３４の筒状を維持するようになっ
ている。なお、継手部材３４は透水性を有する材料をも
って形成してもよい。The joint member 34 is made of a flexible, water-impermeable synthetic resin material or the like. As shown in FIG.
It is formed in a cylindrical shape with a flat rectangular cross section and both ends opened. A plurality of spacers 36 are provided in the joint member 34 in parallel corresponding to the flow paths (grooves) of the water-permeable member 31. The spacer 36 is made of a flexible synthetic resin material or the like, is formed into a rod shape having an I-shaped cross section, and maintains the tubular shape of the joint member 34. Note that the joint member 34 may be formed of a material having water permeability.
【００２７】そして、図１０に示すように、継手部材３
４の一端側には、透水部材３１の一端側の一部分がスラ
イド自在に挿入されている。なお、図１２に示すよう
に、継手部材３４のスペーサー３６、３６…は、透水部
材３１の流路（溝）にスライド自在に挿入される。ま
た、継手部材３４と透水部材３１間には、図１０に示す
ように、抜止部材３７が装着されている。抜止部材３７
は、可撓性を有する鋼線（ワイヤー）等からなり、所定
の長さの紐状に形成され、固定金具３８、３８を介し
て、一端を継手部材３４に固定され、他端を透水部材３
１に固定されている。また、継手部材３４の他端には、
別の透水部材３１の端部が挿入されて固定金具３８を介
して固定されている。なお、継手部材の両端側に、透水
部材をスライド自在に挿入するようにしてもよい。Then, as shown in FIG.
A part of one end of the water-permeable member 31 is slidably inserted into one end of 4. As shown in FIG. 12, the spacers 36 of the joint member 34 are slidably inserted into the channels (grooves) of the water-permeable member 31. As shown in FIG. 10, a retaining member 37 is mounted between the joint member 34 and the water permeable member 31. Retaining member 37
Is made of a flexible steel wire (wire) or the like, is formed in a string shape of a predetermined length, and has one end fixed to the joint member 34 via fixing brackets 38, 38 and the other end connected to a water permeable member. 3
Fixed to 1. Also, at the other end of the joint member 34,
The end of another water permeable member 31 is inserted and fixed via a fixing bracket 38. The water permeable member may be slidably inserted into both ends of the joint member.
【００２８】そして、多数の透水部材３１、３１…が、
一端側を継手部材３４の一端側にスライド自在に接続さ
れ、他端を別の継手部材３４の端部に固定された形で、
透水部材３１と継手部材３４を交互に配置して、相対的
に移動可能に接続されており、これらの透水部材３１、
３１…の流路（溝）が長手方向に連続している。従っ
て、伸長式ドレーン材３０は、図１１に示すように、透
水部材３１と継手部材３４がスライドすることにより、
透水部材３１、３１…が相対的に移動し、これによっ
て、流路を潰すことなく流路の連通状態を維持しつつ、
長手方向に伸縮可能になっている。なお、抜止部材３７
の緊張により透水部材３１と継手部材３４の接続状態は
確実に維持される。.. And a number of water-permeable members 31, 31.
One end is slidably connected to one end of the joint member 34, and the other end is fixed to the end of another joint member 34,
The water permeable members 31 and the joint members 34 are alternately arranged and connected so as to be relatively movable.
31 ... channels (grooves) are continuous in the longitudinal direction. Accordingly, as shown in FIG. 11, the extendable drain member 30 slides the water permeable member 31 and the joint member 34,
Are relatively moved, thereby maintaining the communication state of the flow paths without crushing the flow paths.
It can be extended and contracted in the longitudinal direction. The retaining member 37
The connection between the water permeable member 31 and the joint member 34 is surely maintained due to the tension.
【００２９】このように構成される伸長式ドレーン材３
０は、前述の伸長式ドレーン材１０と同様に、軟弱地盤
と埋立土砂との間の水平なサンドマット内に埋設するこ
とによって、軟弱地盤からサンドマットへ浸透した水
を、透水部材３１、３１…の透水性の外壁部（フィルタ
ー３３、３３…）を介して内部に浸透させ、長手方向に
連続した流路（溝）を介して排水することができる。The stretchable drain member 3 configured as described above
0, as in the case of the above-mentioned stretchable drain material 10, is buried in a horizontal sand mat between the soft ground and the landfill soil, so that water permeated from the soft ground to the sand mat is permeable to the water-permeable members 31, 31. .. Can penetrate into the interior through the water-permeable outer wall portions (filters 33, 33,...) And can be drained through flow paths (grooves) that are continuous in the longitudinal direction.
【００３０】そして、伸長式ドレーン材３０は、伸び切
っていない伸長可能な状態、即ち、継手部材３４に透水
部材３１の一部分を挿入した収縮状態で埋設しておくこ
とによって、軟弱地盤が圧密により大きく不等沈下する
と、伸長式ドレーン材３０のそれぞれの部分において、
それぞれの埋設箇所の変動に応じて、継手部材３４から
透水部材３１が引き出されて、流路の連通状態を維持し
つつ必要なだけ伸長する。従って、軟弱地盤の変動に好
適に追従することができ、サンドマットが分断されて
も、伸長式ドレーン材３０を介してサンドマットの分断
された部分が相互に連絡され、不等沈下後も軟弱地盤か
ら好適に排水することができる。The stretchable drain member 30 is buried in a stretchable state that is not fully stretched, that is, in a contracted state in which a part of the water permeable member 31 is inserted into the joint member 34, so that the soft ground is compacted by the consolidation. When the unequal settlement greatly occurs, in each part of the extendable drain material 30,
The water permeable member 31 is pulled out from the joint member 34 in accordance with the fluctuation of each buried portion, and extends as needed while maintaining the communication state of the flow path. Therefore, it is possible to favorably follow the fluctuation of the soft ground, and even if the sand mat is divided, the divided portions of the sand mat are connected to each other via the extendable drain material 30, and are soft even after unequal settlement. It can be drained from the ground suitably.
【００３１】図１５〜１６は本発明の第４実施形態を示
している。図において、４０は伸長式ドレーン材であ
り、伸長式ドレーン材４０は、所定長さの多数の透水部
材４１、４１…が、伸長可能な多数の伸長部材４４、４
４…を介して、相対的に移動可能に接続されて、長手方
向に伸長可能な長尺状に形成されている。FIGS. 15 and 16 show a fourth embodiment of the present invention. In the figure, reference numeral 40 denotes an extendable drain member. The extendable drain member 40 is formed by a plurality of extendable members 44, 4 of which a plurality of water-permeable members 41, 41,.
4 are relatively movably connected to each other via..., And are formed in an elongated shape that can be extended in the longitudinal direction.
【００３２】透水部材４１は、構造体とフィルターとを
もって、円形断面等の筒状に形成されている。構造体
は、可撓性を有する合成樹脂材等からなり、周壁部に多
数の小孔を有する筒状に成形されており、中央空洞部分
により長手方向に連通して両端を開口させた流路が形成
されている。また、フィルターは、可撓性、透水性を有
する微小空隙を備えた合成樹脂材、紙等からなり、シー
ト状に成形されて、構造体の外周面に固着されており、
フィルターにより透水性の外壁部が形成されている。The water permeable member 41 is formed in a tubular shape having a circular cross section and the like, including a structure and a filter. The structure is made of a flexible synthetic resin material or the like, is formed into a cylindrical shape having a large number of small holes in a peripheral wall portion, and communicates in the longitudinal direction by a central hollow portion to open both ends. Are formed. In addition, the filter is made of a synthetic resin material having fine voids having flexibility and water permeability, made of paper or the like, formed into a sheet shape, and fixed to the outer peripheral surface of the structure,
A water-permeable outer wall is formed by the filter.
【００３３】また、伸長部材４４は、可撓性、不透水性
の合成樹脂材等からなり、両端が開口した円形断面等の
筒状で、外筒４５と内筒４６、４６とをもって、長手方
向に伸縮可能になっている。即ち、図１５に示すよう
に、大径の外筒４５の両端側に、小径の内筒４６、４６
の一端側がスライド自在に挿入されており、また、外筒
４５の両端、内筒４６の挿入端には、相互に係合する内
向鍔状、外向鍔状の抜止部４５ａ、４６ａが固設されて
いる。なお、継手部材４４は透水性を有する材料をもっ
て形成していてもよい。また、伸長部材４４の両端に
は、フランジ状の連結部４６ｂ、４６ｂが固設されてお
り、透水部材４１、４１の端部が固定されるようになっ
ている。The extension member 44 is made of a flexible, water-impermeable synthetic resin material or the like, and has a tubular shape with a circular cross section open at both ends. It is possible to expand and contract in the direction. That is, as shown in FIG. 15, small-diameter inner cylinders 46, 46 are provided at both ends of the large-diameter outer cylinder 45.
Are inserted slidably at both ends, and at both ends of the outer tube 45 and at the insertion end of the inner tube 46, inwardly and outwardly engaging stopper portions 45a and 46a which are engaged with each other are fixedly provided. ing. Note that the joint member 44 may be formed of a material having water permeability. Further, flange-shaped connecting portions 46b, 46b are fixedly provided at both ends of the extending member 44, and the ends of the water-permeable members 41, 41 are fixed.
【００３４】そして、多数の透水部材４１、４１…が、
両端を伸縮可能な伸長部材４４、４４の端部に固定され
た形で、透水部材４１と伸長部材４４を交互に配置し
て、相対的に移動可能に接続されており、これらの透水
部材４１、４１…の流路（中央空洞部分）が長手方向に
連続している。従って、伸長式ドレーン材４０は、図１
６に示すように、伸長部材４４が伸縮することにより、
透水部材４１、４１…が相対的に移動し、これによっ
て、流路を潰すことなく流路の連通状態を維持しつつ、
長手方向に伸縮可能になっている。Then, a large number of water permeable members 41, 41,.
The water-permeable members 41 and the extending members 44 are alternately arranged in a form in which both ends are fixed to the ends of the extendable and contractible extending members 44, 44, and connected relatively movably. , 41 ... (central hollow portion) are continuous in the longitudinal direction. Therefore, the extendable drain member 40 is the same as that shown in FIG.
As shown in FIG. 6, when the extension member 44 expands and contracts,
The water permeable members 41, 41... Relatively move, thereby maintaining the communication state of the flow paths without crushing the flow paths.
It can be extended and contracted in the longitudinal direction.
【００３５】このように構成される伸長式ドレーン材４
０は、前述の伸長式ドレーン材１０と同様に、軟弱地盤
と埋立土砂との間の水平なサンドマット内に埋設するこ
とによって、軟弱地盤からサンドマットへ浸透した水
を、透水部材４１、４１…の透水性の外壁部（フィルタ
ー）を介して内部に浸透させ、長手方向に連続した流路
（中央空洞部分）を介して排水することができる。The extension type drain member 4 configured as described above
0, as in the case of the above-described stretchable drain material 10, is buried in a horizontal sand mat between the soft ground and the reclaimed earth and sand, so that water permeated from the soft ground to the sand mat is permeable to the water-permeable members 41, 41. ... can be permeated into the interior through a water-permeable outer wall portion (filter), and can be drained through a longitudinally continuous flow path (central cavity portion).
【００３６】そして、伸長式ドレーン材４０は、伸び切
っていない伸長可能な状態、即ち、伸長部材４４の外筒
４５に内筒４６、４６が挿入された収縮状態で埋設して
おくことによって、軟弱地盤が圧密により大きく不等沈
下すると、伸長式ドレーン材４０のそれぞれの部分にお
いて、それぞれの埋設箇所の変動に応じて、伸長部材４
４の外筒４５から内筒４６、４６が引き出されて、流路
の連通状態を維持しつつ必要なだけ伸長する。従って、
軟弱地盤の変動に好適に追従することができ、サンドマ
ットが分断されても、伸長式ドレーン材４０を介してサ
ンドマットの分断された部分が相互に連絡され、不等沈
下後も軟弱地盤から好適に排水することができる。The stretchable drain member 40 is buried in a stretchable state in which it is not fully stretched, that is, in a contracted state in which the inner cylinders 46 and 46 are inserted into the outer cylinder 45 of the extension member 44. When the soft ground largely subsides due to the consolidation, the elongation member 4 in each part of the elongation type drain member 40 is changed in accordance with the fluctuation of each embedding point.
The inner cylinders 46, 46 are pulled out from the outer cylinder 45 of FIG. 4 and extend as needed while maintaining the communication state of the flow path. Therefore,
It is possible to favorably follow the fluctuation of the soft ground, and even if the sand mat is divided, the divided parts of the sand mat are connected to each other via the extendable drain material 40, and even after the unequal settlement, the soft mat is separated from the soft ground. It is possible to drain water suitably.
【００３７】図１７〜１８は本発明の第５実施形態を示
している。図において、５０は伸長式ドレーン材であ
り、伸長式ドレーン材５０は、所定長さの多数の透水部
材５１、５１…が、伸長可能な多数の伸長部材５４、５
４…を介して、相対的に移動可能に接続されて、長手方
向に伸長可能な長尺状に形成されている。FIGS. 17 and 18 show a fifth embodiment of the present invention. In the drawing, reference numeral 50 denotes an extendable drain member. The extendable drain member 50 is constituted by a plurality of extendable members 54, 5, of which a plurality of water-permeable members 51, 51.
4 are relatively movably connected to each other via..., And are formed in an elongated shape that can be extended in the longitudinal direction.
【００３８】透水部材５１は、構造体とフィルターとを
もって、四角形断面等の棒状に形成されている。構造体
は、可撓性を有するモノフィラメント成形材等からな
り、四角形断面等で多孔質の棒状に成形されており、多
数の小孔により長手方向に連通して両端を開口させた流
路が形成されている。また、フィルターは、可撓性、透
水性を有する微小空隙を備えた合成樹脂材、紙等からな
り、シート状に成形されて、構造体の外周面に固着され
ており、フィルターにより透水性の外壁部が形成されて
いる。The water permeable member 51 is formed in a rod shape having a rectangular cross section and the like, including the structure and the filter. The structure is made of a flexible monofilament molding material or the like, is formed in a porous rod shape with a square cross section, etc., and forms a flow path that communicates in the longitudinal direction with many small holes and opens both ends. Have been. In addition, the filter is made of a synthetic resin material having fine voids having flexibility and water permeability, paper or the like, is formed into a sheet shape, and is fixed to the outer peripheral surface of the structure, and the filter has water permeability. An outer wall is formed.
【００３９】また、伸長部材５４は、可撓性、不透水性
の合成樹脂材等からなり、両端が開口した四角形断面等
の筒状で、周壁部が蛇腹状（波形状）に成形されてお
り、周壁部が弾性変形又は塑性変形することにより、長
手方向に伸長可能になっている。なお、伸長部材５４は
透水性を有する材料をもって形成してもよい。また、伸
長部材５４の両端には、フランジ状の連結部５４ｂ、５
４ｂが固設されており、透水部材５１、５１の端部が固
定されるようになっている。The extension member 54 is made of a flexible or water-impermeable synthetic resin material or the like, has a tubular shape with a rectangular cross section with both ends opened, and has a peripheral wall formed in a bellows shape (corrugated shape). Since the peripheral wall portion is elastically or plastically deformed, it can be extended in the longitudinal direction. Note that the extension member 54 may be formed of a material having water permeability. In addition, flange-shaped connecting portions 54b, 5
4b is fixed, and the ends of the water-permeable members 51, 51 are fixed.
【００４０】そして、多数の透水部材５１、５１…が、
両端を伸長可能な伸長部材５４、５４の端部に固定され
た形で、透水部材５１と伸長部材５４とを交互に配置し
て、相対的に移動可能に接続されており、これらの透水
部材５１、５１…の流路（小孔）が長手方向に連続して
いる。従って、伸長式ドレーン材５０は、図１８に示す
ように、透伸長部材５４が波形状から直線状の方へ伸長
することにより、透水部材５１、５１…が相対的に移動
し、これによって、流路を潰すことなく流路の連通状態
を維持しつつ、長手方向に伸長可能になっている。[0040] Then, a large number of water-permeable members 51, 51 ...
The water-permeable members 51 and the extension members 54 are alternately arranged and connected so as to be relatively movable in such a manner that both ends are fixed to the ends of the extension members 54, 54 which can be extended. The flow paths (small holes) of 51, 51 ... are continuous in the longitudinal direction. Therefore, as shown in FIG. 18, the water-permeable members 51, 51... Move relative to each other as the water-permeable members 54 extend from the corrugated shape to the linear shape. It is possible to extend in the longitudinal direction while maintaining the communication state of the flow path without crushing the flow path.
【００４１】このように構成される伸長式ドレーン材５
０は、前述の伸長式ドレーン材１０と同様に、軟弱地盤
と埋立土砂との間の水平なサンドマット内に埋設するこ
とによって、軟弱地盤からサンドマットへ浸透した水
を、透水部材５１、５１…の透水性の外壁部（フィルタ
ー）を介して内部に浸透させ、長手方向に連続した流路
（小孔）を介して排水することができる。The extendable drain member 5 configured as described above
0, as in the case of the above-mentioned stretchable drain material 10, is buried in a horizontal sand mat between the soft ground and the landfill soil, so that water permeated from the soft ground to the sand mat can be permeable to the water-permeable members 51, 51. ... can be permeated into the inside through the water-permeable outer wall portion (filter), and can be drained through the flow path (small hole) continuous in the longitudinal direction.
【００４２】そして、伸長式ドレーン材５０は、伸び切
っていない伸長可能な状態、即ち、伸長部材５４が波形
状の収縮状態で埋設しておくことによって、軟弱地盤が
圧密により大きく不等沈下すると、伸長式ドレーン材５
０のそれぞれの部分において、それぞれの埋設箇所の変
動に応じて、伸長部材５４が直線状に引き伸ばされて、
流路の連通状態を維持しつつ必要なだけ伸長する。従っ
て、軟弱地盤の変動に好適に追従することができ、サン
ドマットが分断されても、伸長式ドレーン材５０を介し
てサンドマットの分断された部分が相互に連絡され、不
等沈下後も軟弱地盤から好適に排水することができる。When the stretchable drain material 50 is not stretched and is stretchable, that is, when the stretchable member 54 is buried in a corrugated contraction state, the soft ground is largely unequally settled due to compaction. , Extendable drain material 5
In each part of 0, the extension member 54 is stretched linearly according to the variation of each buried location,
It extends as needed while maintaining the communication state of the flow path. Therefore, it is possible to favorably follow the fluctuation of the soft ground, and even if the sand mat is divided, the divided portions of the sand mat are communicated with each other via the extendable drain material 50, and are soft even after unequal settlement. It can be drained from the ground suitably.
【００４３】なお、上述の第１〜５実施形態では、軟弱
地盤と埋立土砂との間に形成されるサンドマット内に伸
長式ドレーン材を埋設する場合について述べたが、軟弱
地盤と埋立土砂との間にサンドマットを形成せずに水平
に伸長式ドレーンを埋設してもよい。In the first to fifth embodiments, the case where the stretchable drain material is buried in the sand mat formed between the soft ground and the landfill soil has been described. The stretchable drain may be buried horizontally without forming a sand mat between them.
【００４４】また、上述の第１〜５実施形態では、軟弱
地盤上に水平に埋設される水平設置区間において、伸長
式ドレーン材の外壁部が透水性を有する場合について述
べたが、真空ポンプ等の地上設備と水平設置区間の端部
を接続する垂直設置区間においては、伸長式ドレーン材
の外壁部は不透水性であることが好ましい。In the first to fifth embodiments described above, the case where the outer wall of the extendable drain material has water permeability in the horizontal installation section buried horizontally on the soft ground is described. In the vertical installation section connecting the above-mentioned ground equipment and the end of the horizontal installation section, the outer wall of the extendable drain material is preferably impermeable.
【００４５】また、上述の第１〜５実施形態では、軟弱
地盤の埋立工事に伸長式ドレーン材を使用する場合につ
いて述べたが、軟弱土砂を盛土、埋立等の材料にする場
合にも伸長式ドレーン材を使用することができる。Further, in the first to fifth embodiments described above, the case where the stretchable drain material is used for the reclamation work of the soft ground has been described. Drain material can be used.
【００４６】また、上述の第１、２実施形態では、スラ
イド自在に接続された大径筒状の透水部材２１と小径筒
状の透水部材２２の組を、多数、端部を固定する形で連
結する場合について述べたが、筒状の透水部材の一端側
を大径に成形し、他端側を小径に成形することによっ
て、全ての透水部材を相互にスライド自在に接続するこ
ともできる。In the first and second embodiments, a large number of slidably connected large-diameter cylindrical water-permeable members 21 and small-diameter cylindrical water-permeable members 22 are fixed at their ends. Although the case of connection has been described, all the water permeable members can be slidably connected to each other by forming one end of the cylindrical water permeable member to have a large diameter and the other end to have a small diameter.
【００４７】また、上述の第３〜５実施形態では、それ
ぞれ、偏平板状の透水部材３１、３１を筒状の継手部材
３４を介して接続する場合、筒状の透水部材４１、４１
を二重筒状の伸長部材４４を介して接続する場合、多孔
質の透水部材５１、５１を蛇腹状の伸長部材５４を介し
て接続する場合について述べたが、どのような透水部材
でも、継手部材の内周側の形状を透水部材の外周側の形
状に対応させ、伸長部材の端部の連結部の形状を透水部
材の端部の形状に対応させることによって、継手部材、
伸長部材を介して接続することができる。In the third to fifth embodiments described above, when connecting the flat plate-shaped water permeable members 31 and 31 via the cylindrical joint member 34, respectively, the cylindrical water permeable members 41 and 41 are used.
Are connected via the double cylindrical extension member 44, the case where the porous water-permeable members 51, 51 are connected via the bellows-shaped extension member 54 has been described. The shape of the inner peripheral side of the member corresponds to the shape of the outer peripheral side of the water permeable member, and the shape of the connecting portion at the end of the elongate member corresponds to the shape of the end of the water permeable member.
It can be connected via an extension member.
【００４８】[0048]
【発明の効果】上述のように、本発明に係る軟弱土砂の
排水工法は、長手方向に連通して両端が開口した流路と
一部もしくは全部が透水性の外壁部とを備えた複数の透
水部材からなり、透水部材が、長手方向に流路を連続さ
せて相対的に移動可能に接続され、透水部材が相対的に
移動することにより、流路の連通状態を維持しつつ長手
方向に伸長可能に形成されてなる伸長式ドレーン材を、
伸長可能な状態で、軟弱土砂上又は軟弱土砂内に水平に
埋設することによって、不等沈下等に対して、伸長式ド
レーン材が流路を潰すことなく伸長して追従するので、
不等沈下等の後も好適に排水することができる。As described above, the method for draining soft earth and sand according to the present invention is directed to a method of draining a soft earth and sand comprising a plurality of channels having longitudinally open channels at both ends and a partially or entirely water-permeable outer wall. A water permeable member is connected to the water permeable member in the longitudinal direction while maintaining the communication state of the flow path by moving the water permeable member relatively and connecting the flow path in the longitudinal direction. The stretchable drain material formed to be extensible,
In the stretchable state, by burying horizontally on or in soft soil, the stretchable drain material stretches and follows the uneven settlement without crushing the flow path.
Drainage can be suitably performed after uneven settlement or the like.
【００４９】なお、軟弱地盤と埋立土砂との間にサンド
マットが形成される場合には、伸長式ドレーン材を、サ
ンドマット内に埋設することによって、不等沈下等によ
りサンドマットが分断されても、伸長式ドレーン材を介
して分断された部分が相互に連絡されるので、不等沈下
等の後も好適に排水することができる。In the case where a sand mat is formed between the soft ground and the landfill soil, the extrudable drain material is embedded in the sand mat, so that the sand mat is divided due to uneven settlement or the like. Also, since the divided portions are connected to each other via the extendable drain material, drainage can be suitably performed even after uneven settlement or the like.
【００５０】また、本発明に係る伸長式ドレーン材は、
長手方向に連通して両端が開口した流路と一部もしくは
全部が透水性の外壁部とを備えた複数の透水部材からな
り、透水部材を、長手方向に流路を連続させて相対的に
移動可能に接続し、透水部材が相対的に移動することに
より、流路の連通状態を維持しつつ長手方向に伸長可能
に形成したことによって、伸長可能な状態で軟弱土砂上
又は軟弱土砂内に水平に埋設することにより、不等沈下
等に対して、流路を潰すことなく伸長して埋設箇所の変
動に追従するので、不等沈下等の後も好適に排水するこ
とができる。Further, the extendable drain material according to the present invention comprises:
It is composed of a plurality of water-permeable members having a flow path that is open at both ends and communicates in the longitudinal direction, and a part or all of which has a water-permeable outer wall portion. By movably connected, the water-permeable member is relatively moved, and is formed to be extendable in the longitudinal direction while maintaining the communication state of the flow path, so that it can be extended on the soft soil or in the soft soil in the stretchable state. By burying horizontally, it is possible to extend the water without crushing the flow path and to follow the fluctuation of the buried portion with respect to uneven settlement or the like.
【００５１】また、透水部材を、両端が開口した筒状に
成形し、一方の透水部材の端部を他方の透水部材の端部
にスライド可能に挿入した形で接続することによって、
あるいは、透水部材を、両端が開口した筒状の複数の継
手部材を介して、透水部材の端部を継手部材の端部にス
ライド可能に挿入した形で接続することによって、透水
部材を好適に相対的に移動可能に接続することができ
る。Further, the water permeable member is formed into a cylindrical shape having both ends opened, and the end of one water permeable member is slidably inserted into the end of the other water permeable member so as to be connected.
Alternatively, the water-permeable member is preferably connected by connecting the end of the water-permeable member to the end of the joint member in a slidable manner through a plurality of tubular joint members having both ends opened. It can be connected to be relatively movable.
【００５２】この場合、透水部材又は継手部材には、鉤
状又はテーパー状の抜止部を設けることによって、ある
いは、透水部材相互間又は透水部材と継手部材間を、紐
状又は帯状の抜止部材を介して連結することによって、
透水部材の接続状態を好適に保持することができる。In this case, the water-permeable member or the joint member is provided with a hook-shaped or tapered stopper, or a string- or band-shaped stopper is provided between the water-permeable members or between the water-permeable member and the joint member. By linking through
The connection state of the water-permeable member can be suitably maintained.
【００５３】また、透水部材を、両端が開口した伸長可
能な筒状の複数の伸長部材を介して、透水部材の端部と
伸長部材の端部とを固定した形で接続することによって
も、透水部材を好適に相対的に移動可能に接続すること
ができる。Further, the water permeable member may be connected to the end of the water permeable member and the end of the expansion member in a fixed manner via a plurality of extendable tubular expansion members having both ends opened. The water-permeable member can be suitably connected so as to be relatively movable.
【図１】 本発明の第１実施形態であって、伸長式ドレ
ーン材の収縮状態を示す平面図である。FIG. 1 is a plan view showing a contracted state of an extendable drain material according to a first embodiment of the present invention.
【図２】 図１の伸長式ドレーン材の伸長状態を示す立
面図である。FIG. 2 is an elevational view showing an extended state of the extendable drain member of FIG. 1;
【図３】 図１のＡ部拡大図である。FIG. 3 is an enlarged view of a portion A in FIG. 1;
【図４】 図２のＢ部拡大図である。FIG. 4 is an enlarged view of a portion B in FIG. 2;
【図５】 図１の伸長式ドレーン材を軟弱地盤上に敷設
し、埋立土砂を投入した状態を示す平面図である。FIG. 5 is a plan view showing a state in which the stretchable drain material of FIG. 1 is laid on soft ground, and landfill sand is charged.
【図６】 図５の軟弱地盤の不等沈下後の状態を示す立
面図である。FIG. 6 is an elevational view showing a state after uneven settlement of the soft ground of FIG. 5;
【図７】 本発明の第２実施形態であって、伸長式ドレ
ーン材の収縮状態を示す平面図である。FIG. 7 is a plan view showing a contracted state of an extendable drain material according to a second embodiment of the present invention.
【図８】 図７の伸長式ドレーン材の伸長状態を示す平
面図である。FIG. 8 is a plan view showing an extended state of the extendable drain member of FIG. 7;
【図９】 図７のＣ部拡大図である。FIG. 9 is an enlarged view of a part C in FIG. 7;
【図１０】 本発明の第３実施形態であって、伸長式ド
レーン材の収縮状態を示す平面図である。FIG. 10 is a plan view showing a contracted state of an extendable drain material according to a third embodiment of the present invention.
【図１１】 図１０の伸縮式ドレーン材の伸長状態を示
す平面図である。FIG. 11 is a plan view showing an extended state of the telescopic drain member of FIG. 10;
【図１２】 図１０のＤ−Ｄ線拡大横断面図である。FIG. 12 is an enlarged transverse sectional view taken along line DD of FIG. 10;
【図１３】 図１１のＥ−Ｅ線拡大横断面図である。FIG. 13 is an enlarged transverse sectional view taken along line EE of FIG. 11;
【図１４】 図１１のＦ−Ｆ線拡大横断面図である。FIG. 14 is an enlarged cross-sectional view taken along line FF of FIG. 11;
【図１５】 本発明の第４実施形態であって、伸長式ド
レーン材の収縮状態を示す平面図である。FIG. 15 is a plan view showing a contracted state of an extendable drain material according to a fourth embodiment of the present invention.
【図１６】 図１５の伸長式ドレーン材の伸長状態を示
す平面図である。FIG. 16 is a plan view showing an extended state of the extendable drain member of FIG. 15;
【図１７】 本発明の第５実施形態であって、伸長式ド
レーン材の収縮状態を示す平面図である。FIG. 17 is a plan view showing a contracted state of an extendable drain material according to a fifth embodiment of the present invention.
【図１８】 図１７の伸長式ドレーン材の伸長状態を示
す平面図である。FIG. 18 is a plan view showing an extended state of the extendable drain member of FIG. 17;
【図１９】 従来のサンドマット工法であって、軟弱地
盤上に埋立土砂を投入した状態を示す立面図である。FIG. 19 is an elevational view showing a state in which landfill sand is charged on soft ground in a conventional sand mat method.
【図２０】 図１９の軟弱地盤の不等沈下後の状態を示
す立面図である。20 is an elevational view showing a state of the soft ground of FIG. 19 after uneven settlement.
【図２１】 従来の水平ボードドレーン工法であって、
軟弱地盤上に埋立土砂を投入した状態を示す立面図であ
る。FIG. 21 shows a conventional horizontal board drain method,
It is an elevational view showing a state where landfill earth and sand is charged on soft ground.
【符号の説明】 １ 支持地盤 ３ 軟弱地盤（軟弱土砂） ５ サンドマット ７ 埋立土砂 １０ 伸長式ドレーン材 １１ 透水部材 １１ａ 抜止部 １１ｂ 連結部 １２ 透水部材 １２ａ 抜止部 １２ｂ 連結部 １９ 土砂流入防止材 ２０ 伸長式ドレーン材 ２１、２２ 透水部材 ２１ｂ、２２ｂ 連結部 ２９ 土砂流入防止材 ３０ 伸長式ドレーン材 ３１ 透水部材 ３２ 構造体 ３３ フィルター ３４ 継手部材 ３６ スペーサー ３７ 抜止部材 ３８ 固定金具 ４０ 伸長式ドレーン材 ４１ 透水部材 ４４ 伸長部材 ４５ 外筒 ４５ａ 抜止部 ４６ 内筒 ４６ａ 抜止部 ４６ｂ 連結部 ５０ 伸長式ドレーン材 ５１ 透水部材 ５４ 伸長部材 ５４ｂ 連結部[Description of Signs] 1 support ground 3 soft ground (soft soil) 5 sand mat 7 landfill soil 10 extendable drain material 11 water-permeable member 11a retaining part 11b connecting part 12 water-permeable member 12a retaining part 12b connecting part 19 sediment inflow preventing material 20 Extendable drain material 21, 22 Water permeable member 21b, 22b Connecting portion 29 Sediment inflow preventing material 30 Extendable drain material 31 Water permeable member 32 Structure 33 Filter 34 Joint member 36 Spacer 37 Locking member 38 Fixing bracket 40 Extendable drain material 41 Water permeable Member 44 Extension member 45 Outer cylinder 45a Retaining part 46 Inner cylinder 46a Retaining part 46b Connecting part 50 Extendable drain material 51 Water permeable member 54 Extension member 54b Connecting part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 野元 義一 栃木県那須郡西那須野町四区町1534−１ 五洋建設株式会社技術研究所内 (72)発明者 木村 道弘 大阪府八尾市跡部北の町１丁目４番25号 錦城護謨株式会社内 (72)発明者 山内 義文 大阪府八尾市跡部北の町１丁目４番25号 錦城護謨株式会社内 (72)発明者 野村 努 大阪府八尾市跡部北の町１丁目４番25号 錦城護謨株式会社内 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Yoshikazu Nomoto 154-1, Yotsuku-cho, Nishinasuno-machi, Nasu-gun, Tochigi Prefecture Within Goyo Construction Co., Ltd. 1-4-25, Kinjo Rubber Co., Ltd. (72) Inventor Yoshifumi Yamauchi 1-4-4, Kinjo Rubber Co., Ltd. 1-472, Kinki Rubber Co., Ltd. (72) Inventor Tsutomu Nomura Atobe Kita, Yao City, Osaka No. 1-4-25, Kinjo Rubber Co., Ltd.
Claims (8)
と一部もしくは全部が透水性の外壁部とを備えた複数の
透水部材からなり、前記透水部材が、長手方向に前記流
路を連続させて相対的に移動可能に接続され、前記透水
部材が相対的に移動することにより、前記流路の連通状
態を維持しつつ長手方向に伸長可能に形成されてなる伸
長式ドレーン材を、伸長可能な状態で、軟弱土砂上又は
軟弱土砂内に水平に埋設する軟弱土砂の排水工法。1. A plurality of water-permeable members each having a flow path communicating with each other in the longitudinal direction and having both ends opened and a part or the whole of a water-permeable outer wall portion, wherein the water-permeable member is provided with the flow path in the longitudinal direction. Are connected so as to be relatively movable in a continuous manner, and the water-permeable member is relatively moved, thereby maintaining the communicating state of the flow path, while maintaining the communication state of the elongate drain material formed to be extendable in the longitudinal direction. A method of draining soft soil which is horizontally buried on or in soft soil in a stretchable state.
砂との間に形成されるサンドマット内に埋設する請求項
１に記載の軟弱土砂の排水工法。2. The method for draining soft soil according to claim 1, wherein the stretchable drain material is buried in a sand mat formed between the soft ground and the landfill soil.
と一部もしくは全部が透水性の外壁部とを備えた複数の
透水部材からなり、前記透水部材が、長手方向に前記流
路を連続させて相対的に移動可能に接続され、前記透水
部材が相対的に移動することにより、前記流路の連通状
態を維持しつつ長手方向に伸長可能に形成されてなる伸
長式ドレーン材。3. A plurality of water-permeable members each having a flow path communicating with each other in the longitudinal direction and having both ends opened and a part or the whole of a water-permeable outer wall portion, wherein the water-permeable member is provided with the flow path in the longitudinal direction. An extendable drain member which is connected so as to be relatively movable in a continuous manner, and is formed so as to be able to extend in the longitudinal direction while maintaining the communication state of the flow path by relatively moving the water permeable member.
され、一方の前記透水部材の端部を他方の前記透水部材
の端部にスライド可能に挿入した形で、相対的に移動可
能に接続された請求項３に記載の伸長式ドレーン材。4. A water permeable member is formed in a cylindrical shape having both ends opened, and is relatively movable in a form in which an end of one of the water permeable members is slidably inserted into an end of the other of the water permeable members. 4. The extendable drain material of claim 3 connected to a.
の継手部材を介して、前記透水部材の端部を前記継手部
材の端部にスライド可能に挿入した形で、相対的に移動
可能に接続された請求項３に記載の伸長式ドレーン材。5. The water permeable member relatively moves in a form in which the end of the water permeable member is slidably inserted into the end of the joint member via a plurality of tubular joint members having both ends opened. 4. The extendable drain material of claim 3 which is connected as possible.
ーパー状の抜止部が設けられた請求項４もしくは５に記
載の伸長式ドレーン材。6. The stretchable drain material according to claim 4, wherein a hook-shaped or tapered retaining portion is provided on the water-permeable member or the joint member.
間は、紐状又は帯状の抜止部材を介して連結された請求
項４もしくは５に記載の伸長式ドレーン材。7. The stretchable drain material according to claim 4, wherein the water-permeable members are connected to each other or between the water-permeable member and the joint member via a string-shaped or band-shaped retaining member.
筒状の複数の伸長部材を介して、前記透水部材の端部と
前記伸長部材の端部とを固定した形で、相対的に移動可
能に接続された請求項３に記載の伸長式ドレーン材。8. The water-permeable member is relatively fixed in such a manner that an end of the water-permeable member and an end of the extension member are fixed via a plurality of extendable tubular extension members having both ends opened. The extensible drain material of claim 3 movably connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15671297A JP3303034B2 (en) | 1997-06-13 | 1997-06-13 | Drainage method for soft soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15671297A JP3303034B2 (en) | 1997-06-13 | 1997-06-13 | Drainage method for soft soil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH116140A true JPH116140A (en) | 1999-01-12 |
| JP3303034B2 JP3303034B2 (en) | 2002-07-15 |
Family
ID=15633696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15671297A Expired - Fee Related JP3303034B2 (en) | 1997-06-13 | 1997-06-13 | Drainage method for soft soil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3303034B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100737458B1 (en) * | 2005-10-25 | 2007-07-12 | 김성수 | Horizontal draining structures for pore water of soft ground and construction method thereof |
| KR100793178B1 (en) | 2007-01-29 | 2008-01-10 | (주)신성엔지니어링 | Apparatus for preventing cold weatherdamage installed at the softground for supporting a ballast of railroad |
| CN105821892A (en) * | 2016-03-25 | 2016-08-03 | 河南省中原水利水电工程集团有限公司 | Horizontal screen pipe dewatering system and treatment method |
-
1997
- 1997-06-13 JP JP15671297A patent/JP3303034B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100737458B1 (en) * | 2005-10-25 | 2007-07-12 | 김성수 | Horizontal draining structures for pore water of soft ground and construction method thereof |
| KR100793178B1 (en) | 2007-01-29 | 2008-01-10 | (주)신성엔지니어링 | Apparatus for preventing cold weatherdamage installed at the softground for supporting a ballast of railroad |
| CN105821892A (en) * | 2016-03-25 | 2016-08-03 | 河南省中原水利水电工程集团有限公司 | Horizontal screen pipe dewatering system and treatment method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3303034B2 (en) | 2002-07-15 |
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