JP4562055B2 - Steel sheet pile impermeable structure - Google Patents

Steel sheet pile impermeable structure Download PDF

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Publication number
JP4562055B2
JP4562055B2 JP2001001732A JP2001001732A JP4562055B2 JP 4562055 B2 JP4562055 B2 JP 4562055B2 JP 2001001732 A JP2001001732 A JP 2001001732A JP 2001001732 A JP2001001732 A JP 2001001732A JP 4562055 B2 JP4562055 B2 JP 4562055B2
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Prior art keywords
steel sheet
sheet pile
water
impervious
unit
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JP2002206220A (en
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好生 西野
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Shibata Industrial Co Ltd
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Shibata Industrial Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
    • Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters

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Description

【０００１】
【発明の属する技術分野】
本発明は、海域、河川、湖沼等の水域や陸の一部を鋼矢板（鋼管矢板を含む概念である。）で仕切ってその内側を外側に対して完全に遮水する構造に関する。
【０００２】
【従来の技術】
例えば、海域を遮断した状態にして遮断域内を排水する工事や廃棄物処分場等は、遮断域外との完全なる遮水性が要求される。
そこで従来は、図１０、図１１に示すような鋼矢板による構造の遮水工事が行われていた。
【０００３】
これらの構造は、万一の漏洩による環境保護を顧慮して二重の遮水構造となっている。
図１０に示す構造は、図において、１は海底地盤、２は粘土質等による不透水層、３は海底地盤１上に構築されたマウンド、４はこのマウンド３上に構築したコンクリート等による函体、５はこのマウンド３の内側に不透水層２まで打ち込んだ鋼矢板（鋼管矢板を含む。）である。
【０００４】
このような構造において、マウンド３の内側面および海底地盤面にはそれぞれ遮水シート６、７が敷かれている。つまり、遮水シート６によって一重目の遮水工とし、さらに鋼矢板５によって二重目の遮水工とすると共に海底地盤面の遮水シート７によって海底地盤１からの浸透による漏洩を防いでいる。
つぎに、図１１に示す構造は、図において、１は海底地盤、２は粘土質等による不透水層、８は不透水層２まで打ち込んだ鋼矢板である。
【０００５】
このような構造において、鋼矢板の内側面および海底地盤面にそれぞれ遮水シート９、１０が敷かれている。つまり、鋼矢板８により一重目の遮水工とし、遮水シート９によって二重目の遮水工とすると共に海底地盤面の遮水シート１０によって海底地盤１からの浸透による漏洩を防いでいる。
このように、いずれの工法においても、遮水を目的とした鋼矢板は海底地盤の粘土質等の不透水層まで打設することから、海底地盤中を浸透する水を遮蔽することが可能であるが、海底地盤中の二重遮水が不可能であって一重の遮水構造となる。そのために、海底地盤面に遮水シートを敷設する必要がある。
【０００６】
【発明が解決しようとする課題】
しかし、このようにして止水する鋼矢板の連結部は、鋼矢板の打設時の摩擦や打設後の波浪等による動揺によって剥離や隙間が発生し、完全な遮水が期待できない問題があり、止水構造として二重止水構造が要求される場合には、その連結部の止水性を確保するために建設費が非常に高騰することになる。
【０００７】
さらに、鋼矢板の打設後に遮水シートで覆う作業は、潜水作業を伴うことになり、作業効率が非常に悪く、止水の確実性も懸念されるという問題がある。
特に、海底地盤面全面を完全に止水性を保つ状態に遮水シートを敷設する作業は非常に困難な作業である。まして、シート本体の比重が小さい場合には、シート全体をしわを寄らせずに均等に沈下させる作業は極めて困難な作業となる。
【０００８】
【課題を解決するための手段】
そこで本発明は、鋼矢板の表面に遮水シートを取り付け、遮水シートの少なくとも一側に鋼矢板の連結部を覆う被覆片を延出させ、この遮水シートを取り付けた鋼矢板を不透水層まで打ち込んだことを特徴とし、また、複数の鋼矢板を接続した鋼矢板ユニットの表面に遮水シートを取り付け、遮水シートの少なくとも一側に鋼矢板ユニットの連結部を覆う被覆片を延出させ、この遮水シートを取り付けた鋼矢板ユニットを不透水層まで打ち込んだことを特徴とする。このような構造によって二重止水構造を構築することができる。
【０００９】
【発明の実施の形態】
以下に本発明の実施の形態例を図面を用いて説明する。
第１実施の形態例
図１は構成説明図、図２は鋼矢板ユニットの説明図、図３は鋼矢板ユニットの断面説明図、図４は鋼矢板ユニットの先部説明図である。
【００１０】
図において、１１は鋼矢板であり、このような鋼矢板１１を所定数予め鋼矢板１１の接続構造によって接続し、さらにその接続個所を溶接等によって一体に接続して鋼矢板ユニット１２とする。よって、その接続個所は水密性がある接続構造となっている。
１３はこの鋼矢板ユニット１２の表面に取り付けた遮水シートである。
【００１１】
この遮水シート１３はゴムや合成樹脂等のシート材であり、シート材単体でもよいが、必要に応じて、図５に示す如く、シート材１４の中に天然繊維、合成繊維、金属等による織布、不織布、網状体等の補強材１５を埋設した複合構造のものとしてもよい。
このような遮水シート１３は、図２に示す如く、ボルトやナットまたは係止ピン等の係止具１６によって鋼矢板ユニット１２に固定される。この係止具１６の構造は上記の構造に限るものではなくどのようなものでもよく、さらに例えば、図示する如く、抑え金具１７を介して取り付けてもよい。また、接着剤で接着させてもよく、さらには、接着剤と係止具１６との併用でも無論よい。
【００１２】
また、鋼矢板ユニット１２の先部は、地盤への打設時に大きな抵抗力と摩擦力を受けることにより遮水シート１３が剥がれるおそれがある。そこで、そのような剥がれたり破損したりすることがないようにするために図４に示す如く、保護金具１８が取り付けてある。この保護金具１８は、形状が鋼矢板の断面形状と同様であり、側断面形状がＵ字形やＶ字形等で、鋼矢板の先端に遮水シート１３と共に挟むように嵌め、ボルト等の係止金具１９によって取り付ける。この保護金具１８は鋼矢板ユニット１２の先部全体に一体に取り付けてもよいが、図示する如く、各鋼矢板毎の先部にそれぞれ個別に取り付けるようにしてもよい。また、各鋼矢板毎でなく複数の鋼矢板毎に取り付けてもよい。要するに、遮水シート１３を取り付けた鋼矢板ユニット１２の先部が保護されればどのような構造でもよい。
【００１３】
以上のような構成の遮水シート１３を取り付けた鋼矢板ユニット１２は陸上や作業船上において製造し組み立てることができる。
このように構成された遮水シート１３を取り付けた鋼矢板ユニット１２は、図１に示す如く、現場の海底地盤１を貫通させてその下の粘土質等による不透水層２まで打ち込む。このようにして打ち込んだ各鋼矢板ユニット１２同志の連結部は、通常の鋼矢板の連結構造の連結だけではなく、その個所の水密性を確保するために、図６に示す如く、連結部の後部もしくは前部にセメントや樹脂等の止水材を充填した止水部２０を構成したり、連結部の前面もしくは後部を遮水シートで覆って止水部２０を構成しておく。
【００１４】
これによって、鋼矢板ユニット１２により一重目の遮水工とし、さらに遮水シート１３によって二重目の遮水工とする二重遮水構造を構成すると共に海底地盤中においても遮水シート１３によって海底地盤１からの浸透による漏洩を防いで鋼矢板ユニットとの二重の遮水構造を構成することができ、従来必要であった海底地盤面上の遮水シートは不要となる。
【００１５】
第２実施の形態例
図７は本実施の形態例は鋼矢板ユニットの説明図である。本実施の形態例は、鋼矢板ユニット打設後の連結部の止水作業をなくすための構造である。
これは、鋼矢板ユニット１２に取り付けた遮水シート１３の一側もしくは両側（図面には一側のものを示す。）に、遮水シート１３の端部を延出させた被覆片２１を形成した構造である。
【００１６】
この被覆片２１の下部は、打ち込み時の地盤の抵抗による引き裂きやまくれ上がり等の事故を防ぐために図８に示す如く、下端方向に向けて削ぎ取って抵抗の少ない形状にしたり、被覆片２１の下端部も保護金具１８で覆っておくとよい。
遮水シート１３の取り付け構造やその他の構造は上記の第１実施の形態例と同様である。
【００１７】
このような構成によると、遮水シート１３を取り付けた鋼矢板ユニット１２は、図１に示す如く、現場の海底地盤１を貫通させて粘土質等による不透水層２まで打ち込む。このようにして打ち込んだ各鋼矢板ユニット１２の連結部は、通常の鋼矢板の連結構造で連結され、さらにその個所は図９に示す如く、被覆片２１によって内側から覆われることになり水密性が確保される。
【００１８】
なお、上記の如く、被覆片２１の下部を下端方向に向けて削ぎ取った場合、その削ぎ取った個所は不透水層２に打ち込まれるために連結部が被覆片２１によって完全に覆われなくても水密性には影響はない。
この実施の形態例によると、現場作業は鋼矢板ユニットの打設作業だけでよく、止水に関する現場作業がないために作業性にすぐれる。
【００１９】
なお、上記各実施の形態例は鋼矢板ユニットとして説明を行ったが、必ずしもユニットを構成してなくてもよく、単体の鋼矢板に遮水シートを取り付けて構成しても同様である。
【００２０】
【発明の効果】
以上詳細に説明した本発明によると、鋼矢板の表面に遮水シートを取り付け、この遮水シートを取り付けた鋼矢板を不透水層まで打ち込んだ構造とすることにより、鋼矢板による遮水工と遮水シートによる遮水工の二重の遮水工を鋼矢板の打設だけにによって得ることができる効果を有する。
【００２１】
さらに、この遮水シートを取り付けた鋼矢板を不透水層まで打ち込むことにより、透水性地盤も二重の遮水工で仕切ることができるために、従来、内側底面に敷きつめていた遮水シートや遮水工が一切不要となる効果を有する。
また、遮水シートを取り付けた鋼矢板を陸上で製造組み立てることができるために構造の仕上がり精度が格段に向上すると共に作業性が優れる効果を有する。
【００２２】
また、複数の鋼矢板を連結した鋼矢板ユニットを用いることにより、作業性を一層向上させると共に仕上がり精度を一層高めることができる。
さらに、遮水シートに補強材を埋設した複合材を用いると、耐久性に一層の信頼性が得られる効果を有する。
【図面の簡単な説明】
【図１】遮水構造の構成説明図
【図２】第１実施の形態例の鋼矢板ユニットの説明図
【図３】鋼矢板ユニットの断面拡大説明図
【図４】鋼矢板ユニットの先部説明図
【図５】シート材の説明図
【図６】接続部の説明図
【図７】第２実施の形態例の鋼矢板ユニットの説明図
【図８】鋼矢板ユニットの先部説明図
【図９】接続部の説明図
【図１０】従来例の説明図
【図１１】他の従来例の説明図
【符号の説明】
１ 海底地盤
２ 不透水層
１１ 鋼矢板
１２ 鋼矢板ユニット
１３ 遮水シート
１４ シート材
１５ 補強材
１６ 係止具
１７ 抑え金具
１８ 保護金具
１９ 係止金具
２０ 止水部
２１ 被覆片[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure in which a part of a water area such as a sea area, a river, a lake or the like, or a land is partitioned by a steel sheet pile (a concept including a steel pipe sheet pile) and the inside thereof is completely impermeable to the outside.
[0002]
[Prior art]
For example, a construction or a waste disposal site where the sea area is shut off and the drainage area is drained is required to have a complete water shielding ability outside the cutoff area.
Therefore, conventionally, a water shielding work using a steel sheet pile as shown in FIGS. 10 and 11 has been performed.
[0003]
These structures are double water-impervious structures in consideration of environmental protection in the unlikely event of leakage.
In the figure, the structure shown in FIG. 10 is such that 1 is a submarine ground, 2 is an impermeable layer made of clay or the like, 3 is a mound constructed on the submarine ground 1, and 4 is a box made of concrete or the like constructed on the mound 3. The body 5 is a steel sheet pile (including a steel pipe sheet pile) driven up to the impermeable layer 2 inside the mound 3.
[0004]
In such a structure, the water impervious sheets 6 and 7 are laid on the inner surface of the mound 3 and the seabed ground surface, respectively. In other words, the water-impervious sheet 6 is used as the first water-impervious work, and the steel sheet pile 5 is used as the second water-impervious work, and the water-impervious sheet 7 on the seabed ground surface prevents leakage due to seepage from the seabed ground 1. Yes.
Next, in the figure, the structure shown in FIG. 11 is a sea bottom ground, 1 is a water-impermeable layer made of clay or the like, and 8 is a steel sheet pile driven up to the water-impermeable layer 2.
[0005]
In such a structure, the water shielding sheets 9 and 10 are laid on the inner side surface of the steel sheet pile and the seabed ground surface, respectively. In other words, the steel sheet pile 8 is used as the first water-impervious work, the water-impervious sheet 9 is used as the second water-impervious work, and the water-impervious sheet 10 on the seabed ground surface prevents leakage due to seepage from the seabed ground 1. .
In this way, in any construction method, the steel sheet pile for the purpose of water shielding is placed up to the impervious layer such as clay of the submarine ground, so it is possible to shield the water penetrating into the submarine ground. There is, however, a double water-impervious structure in the seabed ground, making it a single water-impervious structure. Therefore, it is necessary to lay a water shielding sheet on the seabed ground surface.
[0006]
[Problems to be solved by the invention]
However, the steel sheet pile connecting part that stops water in this way has a problem that peeling or gaps are generated due to friction caused by the friction of the steel sheet piles or waves after the placement, and complete water shielding cannot be expected. If the double water-stop structure is required as the water-stop structure, the construction cost will be very high in order to ensure the water-stop of the connecting part.
[0007]
Furthermore, the work of covering with a water shielding sheet after placing the steel sheet pile involves a diving work, and there is a problem that the work efficiency is very poor and the reliability of water stoppage is concerned.
In particular, it is very difficult to lay the water-impervious sheet so that the entire surface of the seabed is completely watertight. In addition, when the specific gravity of the sheet body is small, it is extremely difficult to uniformly sink the entire sheet without causing wrinkles.
[0008]
[Means for Solving the Problems]
Therefore, the present invention attaches a water shielding sheet to the surface of the steel sheet pile, extends a covering piece covering the connecting portion of the steel sheet pile to at least one side of the water shielding sheet, and impregnates the steel sheet pile attached with the water shielding sheet. In addition, a water shielding sheet is attached to the surface of a steel sheet pile unit to which a plurality of steel sheet piles are connected, and a covering piece covering the connecting portion of the steel sheet pile unit is extended to at least one side of the water shielding sheet. The steel sheet pile unit to which this water shielding sheet was attached was driven into the impermeable layer. With such a structure, a double water stop structure can be constructed.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an explanatory diagram of a steel sheet pile unit, FIG. 3 is an explanatory sectional view of the steel sheet pile unit, and FIG. 4 is an explanatory diagram of the front part of the steel sheet pile unit.
[0010]
In the figure, reference numeral 11 denotes a steel sheet pile. A predetermined number of such steel sheet piles 11 are connected in advance by a connection structure of the steel sheet piles 11, and the connecting portions are integrally connected by welding or the like to form a steel sheet pile unit 12. Therefore, the connection location has a watertight connection structure.
Reference numeral 13 denotes a water shielding sheet attached to the surface of the steel sheet pile unit 12.
[0011]
This water-impervious sheet 13 is a sheet material such as rubber or synthetic resin, and may be a single sheet material, but if necessary, as shown in FIG. 5, the sheet material 14 is made of natural fiber, synthetic fiber, metal, or the like. A composite structure in which a reinforcing material 15 such as a woven fabric, a nonwoven fabric, or a net-like body is embedded may be used.
Such a water shielding sheet 13 is fixed to the steel sheet pile unit 12 by a locking tool 16 such as a bolt, a nut or a locking pin, as shown in FIG. The structure of the locking member 16 is not limited to the above structure, and any structure may be used. For example, as shown in the figure, the stopper 16 may be attached via a holding metal fitting 17. Moreover, you may make it adhere | attach with an adhesive agent, and also, of course, combined use with an adhesive agent and the locking tool 16 is also good.
[0012]
Moreover, there is a possibility that the water-impervious sheet 13 may be peeled off at the tip of the steel sheet pile unit 12 due to receiving a large resistance force and frictional force during placement on the ground. Therefore, in order to prevent such peeling or damage, a protective metal fitting 18 is attached as shown in FIG. The protective metal fitting 18 has the same shape as the cross-sectional shape of the steel sheet pile, and the side cross-sectional shape is U-shaped, V-shaped or the like. It is attached with a metal fitting 19. The protective metal fitting 18 may be integrally attached to the entire front portion of the steel sheet pile unit 12, but may be individually attached to the front portion of each steel sheet pile as shown in the figure. Moreover, you may attach for every several steel sheet piles instead of each steel sheet pile. In short, any structure may be used as long as the tip of the steel sheet pile unit 12 to which the water shielding sheet 13 is attached is protected.
[0013]
The steel sheet pile unit 12 to which the water shielding sheet 13 having the above configuration is attached can be manufactured and assembled on land or on a work boat.
As shown in FIG. 1, the steel sheet pile unit 12 to which the water-impervious sheet 13 configured in this manner is inserted, penetrates the seabed ground 1 on the site and drives up to the impermeable layer 2 made of clay underneath. As shown in FIG. 6, the connecting portions of the steel sheet pile units 12 driven in this way are not only connected with a normal steel sheet pile connecting structure, but also with a connecting portion of the connecting portion as shown in FIG. 6. The water stop part 20 which filled the water stop material, such as cement and resin, in the rear part or the front part is comprised, or the water stop part 20 is comprised by covering the front surface or rear part of a connection part with a water shielding sheet.
[0014]
Accordingly, a double water-impervious structure is formed with the steel sheet pile unit 12 as a single water-impervious structure, and further with the water-impervious sheet 13 as a double water-impervious structure. Leakage due to seepage from the seabed ground 1 can be prevented and a double watertight structure with the steel sheet pile unit can be formed, and the water shielding sheet on the seabed ground surface, which has been conventionally required, is unnecessary.
[0015]
Second Embodiment FIG. 7 is an explanatory view of a steel sheet pile unit according to this embodiment. The present embodiment is a structure for eliminating the water stop operation of the connecting portion after the steel sheet pile unit is placed.
This forms the covering piece 21 which extended the edge part of the water-impervious sheet 13 on the one side or both sides (the one is shown in the drawing) attached to the steel sheet pile unit 12. This is the structure.
[0016]
In order to prevent an accident such as tearing or turning up due to the resistance of the ground at the time of driving, the lower part of the covering piece 21 is scraped toward the lower end direction to have a shape with less resistance, or as shown in FIG. The lower end may be covered with the protective metal fitting 18.
The mounting structure and other structures of the water shielding sheet 13 are the same as those in the first embodiment.
[0017]
According to such a structure, as shown in FIG. 1, the steel sheet pile unit 12 to which the water-impervious sheet 13 is attached penetrates the seabed ground 1 at the site and is driven to the impermeable layer 2 made of clay or the like. The connecting portions of the steel sheet pile units 12 driven in this way are connected by a normal steel sheet pile connection structure, and the portion is covered from the inside by a covering piece 21 as shown in FIG. Is secured.
[0018]
As described above, when the lower part of the covering piece 21 is scraped off toward the lower end, the cut portion is driven into the water-impermeable layer 2, so that the connecting portion is not completely covered by the covering piece 21. However, there is no effect on water tightness.
According to this embodiment, the on-site work only needs to be a steel sheet pile unit placing work, and since there is no on-site work related to water stoppage, the workability is excellent.
[0019]
In addition, although each said embodiment demonstrated as a steel sheet pile unit, it does not necessarily need to comprise a unit and it is the same even if it attaches a water shielding sheet to a single steel sheet pile.
[0020]
【The invention's effect】
According to the present invention described in detail above, a water-impervious sheet is attached to the surface of the steel sheet pile, and a steel sheet pile attached with this water-impervious sheet is driven to the water-impermeable layer. It has the effect that the double water-impervious work of the water-impervious work by the water-impervious sheet can be obtained only by placing the steel sheet pile.
[0021]
In addition, by driving the steel sheet pile with this water-impervious sheet up to the impermeable layer, the water-permeable ground can also be partitioned by a double impermeable structure. It has the effect of eliminating the need for a water barrier.
Moreover, since the steel sheet pile with the water shielding sheet can be manufactured and assembled on land, the finishing accuracy of the structure is remarkably improved and the workability is excellent.
[0022]
Moreover, by using the steel sheet pile unit which connected the some steel sheet pile, workability | operativity can be improved further and finishing precision can be raised further.
Furthermore, when a composite material in which a reinforcing material is embedded in a water shielding sheet is used, there is an effect that further reliability can be obtained in durability.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a structure of a water shielding structure. FIG. 2 is an explanatory view of a steel sheet pile unit according to a first embodiment. FIG. 3 is an enlarged explanatory view of a cross section of a steel sheet pile unit. Explanatory drawing [FIG. 5] Explanatory drawing of sheet material [FIG. 6] Explanatory drawing of connection part [FIG. 7] Explanatory drawing of steel sheet pile unit of 2nd Embodiment [FIG. 8] Explanatory drawing of steel sheet pile unit [ FIG. 9 is an explanatory diagram of a connecting portion. FIG. 10 is an explanatory diagram of a conventional example. FIG. 11 is an explanatory diagram of another conventional example.
DESCRIPTION OF SYMBOLS 1 Submarine ground 2 Impervious layer 11 Steel sheet pile 12 Steel sheet pile unit 13 Water shielding sheet 14 Sheet material 15 Reinforcement material 16 Locking tool 17 Holding metal fitting 18 Protection metal fitting 19 Locking metal fitting 20 Water stop part 21 Covering piece

Claims (5)

鋼矢板の表面に遮水シートを取り付け、遮水シートの少なくとも一側に鋼矢板の連結部を覆う被覆片を延出させ、この遮水シートを取り付けた鋼矢板を不透水層まで打ち込んだことを特徴とする鋼矢板遮水構造。A water shielding sheet was attached to the surface of the steel sheet pile, a covering piece covering the connecting part of the steel sheet pile was extended to at least one side of the water shielding sheet, and the steel sheet pile with this water shielding sheet was driven into the impermeable layer. Steel sheet pile impermeable structure. 複数の鋼矢板を接続した鋼矢板ユニットの表面に遮水シートを取り付け、遮水シートの少なくとも一側に鋼矢板ユニットの連結部を覆う被覆片を延出させ、この遮水シートを取り付けた鋼矢板ユニットを不透水層まで打ち込んだことを特徴とする鋼矢板遮水構造。A steel sheet pile unit to which a plurality of steel sheet pile units are connected is attached to the surface of the steel sheet pile unit, and a covering piece that covers the connecting portion of the steel sheet pile unit is extended to at least one side of the water shield sheet. Steel sheet pile impervious structure characterized by driving the sheet pile unit to the impermeable layer. 鋼矢板の表面に遮水シートを取り付け、この遮水シートを取り付けた鋼矢板を不透水層まで打ち込み、打ち込んで連結した鋼矢板同志の連結部を覆うように止水部を形成したことを特徴とする鋼矢板遮水構造。 A water-proof sheet is attached to the surface of the steel sheet pile, and the steel sheet pile with this water-impervious sheet is driven to the impervious layer, and the water stop part is formed so as to cover the connected parts of the steel sheet piles that have been driven and connected. Steel sheet pile impervious structure. 複数の鋼矢板を接続した鋼矢板ユニットの表面に遮水シートを取り付け、この遮水シートを取り付けた鋼矢板ユニットを不透水層まで打ち込み、打ち込んで連結した鋼矢板ユニット同志の連結部を覆うように止水部を形成したことを特徴とする鋼矢板遮水構造。 Install a water shielding sheet on the surface of a steel sheet pile unit to which multiple steel sheet piles are connected, drive the steel sheet pile unit with this water shielding sheet up to the water-impermeable layer, and cover the connecting parts of the steel sheet pile units that have been driven and connected. A steel sheet pile impermeable structure characterized in that a water stop is formed on the steel sheet pile. 請求項１、請求項２、請求項３もしくは請求項４において、遮水シートをシート材の中に補強材を埋設した複合材としたことを特徴とする鋼矢板遮水構造。The steel sheet pile impervious structure according to claim 1, wherein the water impervious sheet is a composite material in which a reinforcing material is embedded in a sheet material.
JP2001001732A 2001-01-09 2001-01-09 Steel sheet pile impermeable structure Expired - Fee Related JP4562055B2 (en)

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JP4878333B2 (en) * 2007-05-29 2012-02-15 五洋建設株式会社 Permeability control method in water-impervious structure
JP5194713B2 (en) * 2007-10-24 2013-05-08 新日鐵住金株式会社 Steel sheet pile with steel cover and wall body using the same
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JP7507008B2 (en) 2020-05-20 2024-06-27 太陽工業株式会社 Water-resistant structure at the end of water-resistant sheet and method for constructing same

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