JPH0476112A - Construction method for underground continuous wall on sea - Google Patents
Construction method for underground continuous wall on seaInfo
- Publication number
- JPH0476112A JPH0476112A JP2188898A JP18889890A JPH0476112A JP H0476112 A JPH0476112 A JP H0476112A JP 2188898 A JP2188898 A JP 2188898A JP 18889890 A JP18889890 A JP 18889890A JP H0476112 A JPH0476112 A JP H0476112A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- continuous wall
- sheet pile
- seawater
- groups
- 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
- 238000010276 construction Methods 0.000 title claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 239000013535 sea water Substances 0.000 claims abstract description 19
- 238000009415 formwork Methods 0.000 claims abstract description 11
- 238000005192 partition Methods 0.000 claims abstract description 8
- 230000000087 stabilizing effect Effects 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 239000004570 mortar (masonry) Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 230000009972 noncorrosive effect Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000004744 fabric Substances 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 4
- 229910052742 iron Inorganic materials 0.000 abstract 2
- 239000003381 stabilizer Substances 0.000 abstract 2
- 238000000151 deposition Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 241001282110 Pagrus major Species 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Underground Or Underwater Handling Of Building Materials (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、海洋構造物等の構築のために、海上で地中
連続壁を築造する時の施工方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a construction method for constructing underground walls at sea for constructing marine structures and the like.
〔従来技術およびこの発明が解決すべき課題〕従来この
種の施工方法としては、築島を仮設して施工するものが
一般に知られている。[Prior Art and Problems to be Solved by the Present Invention] Conventionally, as a construction method of this type, one in which construction is performed by temporarily constructing a rocky island is generally known.
ところが大規模な築島の仮設が必要であるので、全体の
工期が長くなると共に、費用が多くかかるという理由か
ら、築島を必要とせずに海上から直接施工する施工方法
の開発が望まれていた。However, this requires the construction of a large-scale temporary construction island, which lengthens the overall construction period and increases costs.Therefore, there was a desire to develop a construction method that could be constructed directly from the sea without requiring a construction island.
しかし溝壁安定のための水頭差の確保や、地中連続壁形
成用溝の掘削時に使用する安定液が流出してしまうこと
や、連続壁形成用の配筋等の構造物が海水中となるので
海水による金属の腐食防止上対策等の問題から、海上か
ら確実に連続壁を形成することのできる施工方法は開発
されていないのが現状である。However, it is difficult to ensure the difference in water head for stabilizing trench walls, and there are concerns that the stabilizing liquid used when excavating trenches for forming continuous underground walls may leak out, and that structures such as reinforcement for forming continuous walls may be exposed to seawater. Therefore, due to problems such as measures to prevent corrosion of metal by seawater, no construction method has been developed that can reliably form a continuous wall from the sea.
この発明は前述した事情に鑑みて創案されたもので、そ
の目的は水頭差を確実に確保でき、溝掘削時の安定液が
流出することなく、腐食防止対策も完全な施工方法を提
供することにある。This invention was devised in view of the above-mentioned circumstances, and its purpose is to provide a construction method that can reliably secure the water head difference, prevent the stabilizing liquid from flowing out during trench excavation, and has complete corrosion prevention measures. It is in.
（課題を解決するための手段〕
この発明によれば連続壁形成用溝を掘削する海底地盤へ
、上端部が海面上に突出するようにして鋼矢板を２条平
行に連設打設し、この真鯛矢板群間の海水を安定液と置
換すると共に、真鯛矢板群間に海上から掘削機を挿入し
て連続壁形成用溝の掘削を行うこととする。(Means for Solving the Problems) According to the present invention, two steel sheet piles are successively driven in parallel to the seabed ground where a trench for forming a continuous wall is to be excavated, with the upper ends protruding above the sea surface, The seawater between the groups of red sea bream sheet piles will be replaced with a stabilizing liquid, and an excavator will be inserted from the sea between the groups of red sea bream sheet piles to excavate continuous wall forming grooves.
そして掘削した形成溝内へ、連続壁の海中となる部分に
非腐食性の型枠を取付けた連続壁用鉄筋篭を挿入して、
コンクリートを打設することにより連続壁の形成を行う
ものである。Then, a continuous wall reinforcing bar cage with non-corrosive formwork attached to the underwater part of the continuous wall is inserted into the excavated formation trench.
A continuous wall is formed by pouring concrete.
以下この発明を図示する実施例に基いて説明する。 The present invention will be explained below based on illustrated embodiments.
地中連続壁１は、第１図に示すように海底地盤２内に形
成溝、３を掘削して施工され、上部が海中内となるよう
に設けられている。As shown in FIG. 1, the underground continuous wall 1 is constructed by excavating a formation groove 3 in the seabed ground 2, and is provided so that the upper part is under the sea.
このような構成からなる地中連続壁１の施工に際しては
、まず海上から上端部が海面４上に突出するようにして
、鋼矢板５を海底地盤２へ連設打設することで、２条平
行に両鋼矢板群７．７を形成する。When constructing the underground continuous wall 1 having such a configuration, first, the steel sheet piles 5 are successively driven into the seabed ground 2 so that the upper end thereof protrudes above the sea surface 4, and then two rows are formed. Both steel sheet pile groups 7.7 are formed in parallel.
その後、両鋼矢板群７，７の相対するウェブ部５ａに設
けた各ガイド金具６，６間に平板８を配設すると共に、
この各平板８と両鋼矢板群７．７との間に止水モルタル
９を充填する。また各鋼矢板７．７の上端部を鋼材２５
で継いで桟橋２６等に固定すると共に、中仕切壁１０を
構成するプレー）１０ａとコンクリ−）１０ｂを所定位
置に設ける。（以上第２図〜第４図参照）
次に両鋼矢板群７．７と、所定間隔で両鋼矢板群７，７
間に設けた両仕切壁ｉｏ、 ｉｏと、海底面１１とで囲
まれた空間部１２の海水１３を、置換手段により安定液
１４と交換する。（第２図、第５図参照）その後、両鋼
矢板群７，７の間に掘削機１５を挿入して、海底地盤２
に連続壁用形成溝３を掘削する。After that, a flat plate 8 is arranged between each guide fitting 6, 6 provided on the opposing web portions 5a of both steel sheet pile groups 7, 7,
A water stop mortar 9 is filled between each flat plate 8 and both steel sheet pile groups 7.7. In addition, the upper end of each steel sheet pile 7.7 is made of steel material 25.
At the same time, the plate 10a and the concrete 10b constituting the partition wall 10 are installed at predetermined positions. (See Figures 2 to 4 above) Next, both steel sheet pile groups 7.
Seawater 13 in a space 12 surrounded by both partition walls io, io provided between them and the seabed surface 11 is replaced with a stabilizing liquid 14 by a replacement means. (See Figures 2 and 5) After that, the excavator 15 is inserted between the two steel sheet pile groups 7 and 7, and the
A continuous wall forming groove 3 is excavated.
ここで符号１６は、掘削機１５を定められた位置にセッ
トする掘削用定規である。（第６図参照）次に形成溝３
内へ、連続壁１の海中となる部分に布およびプラスチッ
ク製等の非腐食性の型枠１７を取付けた連続壁用鉄筋篭
１８を挿入する。Here, reference numeral 16 is an excavation ruler for setting the excavator 15 at a predetermined position. (See Figure 6) Next, form groove 3.
A reinforcing bar cage 18 for a continuous wall, to which a non-corrosive formwork 17 made of cloth or plastic is attached, is inserted into the underwater part of the continuous wall 1.
そしてコンクリート１９の打設を行って連続壁１の形成
を行う。（以上第７図参照）
この形成溝３内への鉄筋篭１８の挿入と、コンクリート
１９の打設を行うには、まず先行エレメントの形成用溝
３を掘削し、鉄筋篭１８の建込みを行う。Concrete 19 is then placed to form the continuous wall 1. (See Figure 7 above) To insert the reinforcing bar cage 18 into this forming groove 3 and place concrete 19, first excavate the groove 3 for forming the preceding element, and then set the reinforcing bar cage 18. conduct.
この時に海中部分の型枠１７としては、プラスチック型
枠や右型枠および二重布型枠を用いる。また同時にカバ
ープレート２０も建込む。（第７図、第８図参照）
次に後行エレメントの形成用溝３′の掘削を行う。At this time, as the formwork 17 for the underwater part, a plastic formwork, a right formwork, and a double cloth formwork are used. At the same time, the cover plate 20 is also installed. (See FIGS. 7 and 8) Next, a groove 3' for forming a trailing element is excavated.
そしてその後先行エレメントの鉄筋篭１８と同構成の鉄
筋篭２１の建込みを行い、コンクリート１９の打設を行
う。 （第８図、第９図参照）
次に後行エレメントの施工が完了したら、中仕切壁１０
の盛替を行う。この盛替時には、二重布型枠にモルタル
を打設した止水壁２２を既施工連続壁１の四角に施工す
る。そして各止水壁２２と、型枠１７と、平板８とで囲
まれる部分１２°の安定液１４を海水に置換し、中仕切
壁１０を盛替えるが、同時にモルタル止水した鋼矢板群
７．７の撤去を行って新たな連続壁ｌの施工に転用する
。Thereafter, a reinforcing bar cage 21 having the same configuration as the reinforcing bar cage 18 of the preceding element is erected, and concrete 19 is poured. (See Figures 8 and 9) Next, when the construction of the trailing element is completed, the middle partition wall 10
will be replaced. At the time of this replacement, a water stop wall 22 made of a double cloth form and cast with mortar is constructed in the squares of the existing continuous wall 1. Then, the stabilizing liquid 14 in the area 12° surrounded by each water-stop wall 22, formwork 17, and flat plate 8 is replaced with seawater, and the partition wall 10 is replaced, but at the same time, the steel sheet pile group 7 is water-stopped with mortar. .7 will be removed and used for construction of a new continuous wall.
そして再び形成用溝３の掘削を行い、前述したようにし
て、新たな連続壁１を形成する。（以上第１０図、第１
１図参照）
このような作業を繰り返すことで、海上において地中連
続壁１を構築する。Then, the forming groove 3 is excavated again, and a new continuous wall 1 is formed as described above. (Figure 10, 1
(See Figure 1) By repeating such work, the underground continuous wall 1 is constructed on the sea.
なお両鋼矢板群７，７と、両中仕切壁１０．１０と、海
底面１１とで囲まれた空間部１２の海水を、また各止水
壁２２と、型枠１７と、平板８とで囲まれた部分１２゛
の安定液をそれぞれ安定液と、海水に置換する手段とし
ては、まず下端に水抜き栓２３が設けられている置換用
袋２４の内部へ安定液または海水を充填することで、空
間部１２または囲まれた部分１２”内を置換用袋２４で
満たして海水または安定液を排出する。In addition, the seawater in the space 12 surrounded by the steel sheet pile groups 7, 7, the middle partition walls 10, 10, and the seabed surface 11 is also To replace the stabilizing liquid in the area 12'' surrounded by the stabilizing liquid and seawater, first, the stabilizing liquid or seawater is filled into the inside of the replacement bag 24, which is provided with a drain plug 23 at the lower end. As a result, the space 12 or the enclosed portion 12'' is filled with the replacement bag 24 to drain the seawater or stabilizing liquid.
次に水抜き栓２３を開いて、安定液または海水の空間部
１２または囲まれた部分１２゛内への充填を行う。Next, the drain valve 23 is opened to fill the space 12 or the enclosed area 12'' with stabilizing liquid or seawater.
このようにして置換が完了する。（以上第５図参照）
〔発明の効果〕
この発明は、以上のような構成からなり、次に述べる効
果を有する。In this way, the replacement is completed. (See FIG. 5 above.) [Effects of the Invention] The present invention has the configuration described above and has the following effects.
■ 上端部を海面上に突出させて２条平行に海底地盤へ
遠投打設した両鋼矢板群の間に、海水を安定液へ置換し
た後に掘削機の挿入を行って連続壁の形成溝を掘削する
ことにより、築島を仮設することなく外周が海水でも確
実に水頭差の維持ができ、溝壁の安定が保てる形成溝を
確実に掘削することができる。■ After replacing the seawater with a stabilizing liquid, an excavator was inserted to create a groove to form a continuous wall between two groups of steel sheet piles, which were cast long distances into the seabed in two parallel rows with their upper ends protruding above the sea surface. By excavating, it is possible to reliably maintain the water head difference even if the outer periphery is seawater without temporarily constructing a built-up island, and it is possible to reliably excavate a forming trench that maintains the stability of the trench wall.
■ 両鋼矢板群の相対するウェブ部に設けた各ガイド金
具間に平板を配設し、この平板と鋼矢板との間に止水モ
ルタルを充填すると共に、連続壁用鉄筋篭の海中となる
部分に非腐食性の型枠を取付けたことにより、コンクリ
ートのかぶりが完全にとれる等連続壁の金属部が海水と
接触しないので腐食に対して耐久性の良い構造物とする
ことができる。■ A flat plate is placed between each guide fitting installed on the opposing web parts of both steel sheet pile groups, and water-stop mortar is filled between this flat plate and the steel sheet pile, and a continuous wall reinforcing bar cage is formed under the sea. By attaching non-corrosive formwork to the sections, the concrete cover can be completely removed and the metal parts of the continuous walls will not come into contact with seawater, making it possible to create a structure with good durability against corrosion.
第１図はこの発明方法で施工した連続壁を示す断面図、
第２図および第５図〜第１１図はこの発明方法を示す概
略工程図、第３図は第２図のＡ−Ａ線矢視図、第４図は
第２図のＢ部拡大図である。
ｌ・・・地中連続壁、２・・・海底地盤、３・・・形成
溝、４・・・海面、５・・・鋼矢板、５ａ・・・ウェブ
部、６・・・ガイド金具、７・・・鋼矢板群、８・・・
平板、９・・・止水モルタル、１０・・・中仕切壁、１
０ａ・・・プレート、１０ｂ・・・コンクリート、１１
・・・海底面、１２・・・空間部、１２’・・・囲まれ
た部分、１３・・・海水、１４・・・安定液、１５・・
・掘削機、１６・・・掘削用定規、１７・・・型枠、１
８・・・鉄筋篭、１９・・・コンクリート、２０・・・
カバープレート、２１・・・鉄筋篭、２２・・・止水壁
、２３・・・水抜き栓、２４・・・置換用袋、２５・・
・鋼材、２６・・・桟橋。
＝ ９Figure 1 is a sectional view showing a continuous wall constructed by the method of this invention;
2 and 5 to 11 are schematic process diagrams showing the method of this invention, FIG. 3 is a view taken along line A-A in FIG. 2, and FIG. 4 is an enlarged view of part B in FIG. be. l... Underground continuous wall, 2... Seabed ground, 3... Formation groove, 4... Sea surface, 5... Steel sheet pile, 5a... Web part, 6... Guide metal fittings, 7... Steel sheet pile group, 8...
Flat plate, 9... Water stop mortar, 10... Partition wall, 1
0a...Plate, 10b...Concrete, 11
... Seabed surface, 12... Space, 12'... Surrounded area, 13... Seawater, 14... Stabilizing liquid, 15...
・Excavator, 16...Drilling ruler, 17...Formwork, 1
8...Reinforced cage, 19...Concrete, 20...
Cover plate, 21...Reinforced cage, 22...Water stop wall, 23...Drain plug, 24...Replacement bag, 25...
・Steel, 26... Pier. = 9
Claims (2)
海底地盤へ連設した両鋼矢板群と、この両鋼矢板群の相
対するウェブ部に設けた各ガイド金具間に配設した各平
板との間に止水モルタルを充填し、 次に前記両鋼矢板群と、所定間隔で両鋼矢板群間に設け
た両中仕切壁と、海底面とで囲まれた空間部の海水を置
換手段により安定液と交換し、 その後前記両鋼矢板群の間に掘削機を挿入して、前記海
底地盤に連続壁用溝を掘削し、 そして前記連続壁用溝内に、連続壁の海中となる部分に
非腐食性の型枠を取付けた連続壁用鉄筋篭を挿入して連
続壁の形成を行うことを特徴とする海上における地中連
続壁の施工方法。(1) Both steel sheet pile groups are connected to the submarine ground in two rows parallel to each other so that their upper ends protrude above the sea surface, and the two steel sheet piles are arranged between guide fittings installed on opposing web parts of both steel sheet pile groups. A water-stop mortar is filled between each of the steel sheet pile groups, and a space surrounded by the seabed and both partition walls provided between the steel sheet pile groups at predetermined intervals is filled with water-stop mortar. The seawater is replaced with a stabilizing liquid by a displacement means, and then an excavator is inserted between the two groups of steel sheet piles to excavate a continuous wall groove in the seabed ground, and a continuous wall groove is inserted into the continuous wall groove. 1. A method for constructing an underground continuous wall at sea, which is characterized by forming a continuous wall by inserting a continuous wall reinforcing cage with a non-corrosive formwork attached to the underwater part of the underground wall.
換用袋内に安定液を充填することで、置換すべき部分内
を前記置換用袋で満たして海水を排出し、その後前記水
抜き栓を開いて安定液の前記空間部内への充填を行うも
のとしたことを特徴とする請求項第１項記載の施工方法
。(2) The replacement means is to fill a replacement bag with a drain plug at the lower end with a stabilizing liquid, fill the area to be replaced with the replacement bag and drain the seawater, and then drain the seawater. 2. The construction method according to claim 1, wherein the stabilizing liquid is filled into the space by opening a drain valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2188898A JPH0476112A (en) | 1990-07-17 | 1990-07-17 | Construction method for underground continuous wall on sea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2188898A JPH0476112A (en) | 1990-07-17 | 1990-07-17 | Construction method for underground continuous wall on sea |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0476112A true JPH0476112A (en) | 1992-03-10 |
| JPH0555654B2 JPH0555654B2 (en) | 1993-08-17 |
Family
ID=16231813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2188898A Granted JPH0476112A (en) | 1990-07-17 | 1990-07-17 | Construction method for underground continuous wall on sea |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0476112A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7620348B2 (en) | 2005-12-15 | 2009-11-17 | Seiko Epson Corporation | Container for developing agent, and image forming apparatus incorporating the same |
-
1990
- 1990-07-17 JP JP2188898A patent/JPH0476112A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7620348B2 (en) | 2005-12-15 | 2009-11-17 | Seiko Epson Corporation | Container for developing agent, and image forming apparatus incorporating the same |
| US7822368B2 (en) | 2005-12-15 | 2010-10-26 | Seiko Epson Corporation | Container for developing agent, and image forming apparatus incorporating the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0555654B2 (en) | 1993-08-17 |
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