JP3619951B2 - Wave-dissipating structure with composite main pile for wave-dissipating structure - Google Patents

Wave-dissipating structure with composite main pile for wave-dissipating structure Download PDF

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JP3619951B2
JP3619951B2 JP15634898A JP15634898A JP3619951B2 JP 3619951 B2 JP3619951 B2 JP 3619951B2 JP 15634898 A JP15634898 A JP 15634898A JP 15634898 A JP15634898 A JP 15634898A JP 3619951 B2 JP3619951 B2 JP 3619951B2
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wave
steel
pile
piles
concrete
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JPH11350446A (en
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建治 石倉
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創建工業株式会社
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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
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Description

【０００１】
本発明は、消波構造物の力学的安定度を向上させると共に、耐久性を増大させることを目的とした消波構造物用複合主杭とその消波構造物に関する。
【０００２】
【従来の技術】
水底地盤に所要の間隔で立設した複数本の杭により囲繞区画した空域内に石材またはコンクリートブロック等の消波材を乱積みしてなる消波構造物、すなわちたとえば、図１０に示すように、水底地盤に複数本の杭１（主杭および中間杭）を所要の間隔で縦横に立設し、その杭１が囲繞区画する空域内に、石材またはコンクリートブロック等の消波材２を乱積みし、杭１の上端に上部工３を施工し、さらに必要に応じ、沖側に消波工４を施工した消波構造物は、特公昭６２−３７１６８号公報等に記載される等して、従来公知であり、それは力学的には非常に安定した構造であるとされている。
【０００３】
【発明が解決しようとする課題】
しかし、上記杭１として使用されているＨ形鋼等の鋼杭は、乾湿を繰り返す部分において腐食が激しく、港湾構造物等の設計基準では腐食率を０．３ｍｍ／年と非常に大きな値をとることになっている程である。このため各種の防食法が提案されているが、いずれも一長一短で、工費が高く、施工も難しいという共通の欠点がある。
【０００４】
さらに、鋼杭には海底の砂礫を含んだ強大な波浪が繰り返し衝接することによる摩耗被害が発生する。消波構造物の沖側に施工設置する消波工（図１０参照）は、波力を大きく低減させることができ、上記摩耗被害の対策として効果的である。しかしながら、工費を増大させるという欠点がある。
【０００５】
本発明の目的は、第１に、上記各欠点すなわち杭の腐食と摩耗をなくすこと、第２に、杭自体の強度を増大させることにより消波構造物の力学的安定度を一層高めること、第３に、従来の中間杭を不要または少なくして、あるいはまた、消波工を必ずしも設置しなくてもよくして、所期の消波構造物を経済的に施工できるようにすること等にある。
【０００６】
【課題を解決するための手段】
本発明消波構造物用複合主杭ａは、水底地盤Ｇに打設され垂直に起立している鋼杭５と、この鋼杭５に嵌合するとともに水底地盤Ｇに打設され垂直に起立しているプレストレスト・コンクリート管等の耐摩耗性覆管６と、これら鋼杭５と耐摩耗性覆管６との間に形成される空隙に砂利７，コンクリート８等の充填物を充填してなるものである。
【０００７】
上記においては、鋼杭５がその所要長さの頭端部５′を水面Ｗから突出させ、また、耐摩耗性覆管６がその所要長さの頭端部６′を水面Ｗから突出させ、しかも、これら鋼杭５と耐摩耗性覆管６との間に形成される空隙で、かつ、水底地盤Ｇから水面Ｗの少し下方位置までの間の部分に砂利７を充填し、同空隙であってかつ砂利７の上側に位置する部分にコンクリート８を充填すること、さらに具体的には、鋼杭５と耐摩耗性覆管６の中心を一致させ、かつ、鋼杭５の頭端部５′を耐摩耗性覆管６の頭端部６′からさらに上方に延出する状態にすることが好適であると認められる。
【０００８】
本発明消波構造物は、上記複合主杭ａを水底地盤Ｇに所要の間隔で多数立設し、その複合主杭ａの耐摩耗性覆管６の頭端部６′を通じ水面Ｗから突出している鋼杭５の頭端部５′を、複数本の連結鋼材９により連結し、上記多数の複合主杭ａが囲繞区画する空域内に石材またはコンクリートブロック等の消波材１０を投入乱積みするとともに、上部コンクリート（鉄筋コンクリートを含む）を打設して鋼杭５の頭端部５′と連結鋼材９を埋設した上部覆工１１を施工してなる。
【０００９】
この消波構造物の周辺の水底地盤に、鋼材１２で形成した格子状の敷設枠ｆに消波材１３を乱積みしてなる根固め工ｅを設置することは、複合主杭ａの洗掘による倒壊を防止できて望ましいものである。
【００１０】
【発明の実施の形態】
図１〜３は、本発明消波構造物用複合主杭の一実施形態に係る複合主杭ａを示すものである。
５はＨ形鋼である鋼杭で、それは、水底地盤Ｇに適宜の手段によって打設されて、所要長さの頭端部５′を水面Ｗから上方に突出させた状態で垂直に起立している。
６は、プレストレスト・コンクリート（Ｐｒｅｓｔｒｅｓｓｅｄ Ｃｏｎｃｒｅｔｅ）管、プレストレス・ハイ・ストレングス・コンクリート（Ｐｒｅｓｔｒｅｓｓ Ｈｉｇｈ ｓｔｒｅｎｇｔｈ Ｃｏｎｃｒｅｔｅ（ＰＨＣ））管等の耐摩耗性覆管である。
この耐摩耗性覆管６は、上記鋼杭５に嵌合した状態において、該鋼杭５と同様に水底地盤Ｇに適宜の手段により打設され、所要長さの頭端部６′を水面Ｗから上方に突出させた状態で垂直に起立している。
【００１１】
これら鋼杭５と耐摩耗性覆管６とはたがいの中心を一致させ、かつ、鋼杭５の頭端部５′は耐摩耗性覆管６の頭端部６′からさらに上方に延出している。
【００１２】
７は、鋼杭５と耐摩耗性覆管６との間に形成されている空隙であって、かつ、水底地盤Ｇから水面Ｗの少し下方位置までの間の部分に充填した砂利である。
８は、上記空隙であって、かつ、砂利７の上側に位置する部分に充填したコンクリートである。
【００１３】
上記構成から明らかなとおり、鋼杭５は、砂利７およびコンクリート８に埋設され、かつ、耐摩耗性覆管６を嵌合した状態になっていて、直接乾湿作用を受けることがないとともに直接波浪の衝接を受けることもないので、腐食することがないのはもちろん摩耗することもない。
【００１４】
また、本複合主杭ａは、文字どおり、鋼杭５および耐摩耗性覆管６ならびにこれらの間に充填された砂利７およびコンクリート８等の充填物からなる複合体であるから、従来の鋼杭単独の場合にくらべて、杭としての力学的強度を増大させているものであること明らかである。
【００１５】
図４〜８は、本発明消波構造物の一実施形態に係る消波構造物ｂを示す。
この消波構造物ｂは、水底地盤Ｇに上記構成の複合主杭ａを所要の間隔（消波材が抜脱しない適宜の間隔）で多数立設し、その複合主杭ａの頭部、さらに具体的には、耐摩耗性覆管６の頭端部６′を通じ水面Ｗから外方に突出している鋼杭５の頭端部５′を、複数本の連結鋼材９により連結する。
【００１６】
その後、上記多数の複合主杭ａが囲繞区画する空域内に石材またはコンクリートブロック等の消波材１０を投入乱積みするとともに、上部コンクリート（鉄筋コンクリートを含む）を打設して鋼杭５の頭端部５′と連結鋼材９を埋設した上部覆工１１を施工し、消波構造物ｂを完工する。
【００１７】
この消波構造物ｂにおいて、複合主杭ａは、従来のように鋼杭を単独使用する場合にくらべて耐摩耗性覆管６の分だけ外径を大きくしているので、同じ杭心距離をおいて立設する場合、鋼杭単独使用に比し本複合主杭ａの方が、隣接杭間の隙間を小さくする。
したがって、より小径の消波材を使用してもその隙間から抜脱させないし、従来の中間杭を不要にするとか少なくともその本数を減らすことができる。
【００１８】
複合主杭ａを構成する鋼杭５が、直接乾湿作用を受けることも直接波浪の衝接を受けることもなく腐食や摩耗のおそれがないのにくわえ、その複合主杭ａの剛性が鋼杭５単独の場合に比べて大きいので、この消波構造物ｂ全体の力学的強度もまた増大し、耐久性に富むものとなっている。
したがって、従来のように、波力を低減させて杭の摩耗被害を防ぐために、消波構造物ｂの沖側に消波工４を施工設置する不経済も改善できる。
【００１９】
図９は、本発明消波構造物の他の実施形態に係る消波構造物ｃを示す。
この消波構造物ｃは、既設の直立護岸ｄが、強大な波力を直接受けることにより、その護岸自体を破壊するおそれがあったり、近傍の住宅等に大きな振動を与えるのを改善する目的で構築設置したものである。
【００２０】
すなわち、消波構造物ｃは、直立護岸ｄの前面に上記消波構造物ｂの場合と同じ要領で構築設置され、さらに、その前面に根固め工ｅを施工設置している。
この根固め工ｅは、複数本の鋼材１２を縦横に配列して格子状にしてなる敷設枠ｆを、消波構造物ｃの沖側水底地盤に敷設し、その上に、格子目から脱出することなくそれに係合する大きさの石材またはコンクリートブロック等の消波材１３を乱積みしてなる。
【００２１】
この根固め工ｅにより、消波構造物ｃの複合主杭ａが洗掘により倒壊するようなことが防止されるものである。
【００２２】
【発明の効果】
以上述べたところから明らかなように、本発明消波構造物用複合主杭は、水底地盤に打設され垂直に起立している鋼杭に耐摩耗性覆管を嵌合するとともに、これら鋼杭と耐摩耗性覆管との間に砂利，コンクリート等の充填物を充填してなるから、鋼杭は、直接乾湿作用を受けることがないとともに直接波浪の衝接を受けることもないので、腐食することがないのはもちろん摩耗することもない。
【００２３】
また、この複合主杭は、文字どおり、鋼杭および耐摩耗性覆管ならびにこれらの間に充填された充填物からなる複合体であるから、従来の鋼杭単独の場合にくらべて、杭としての力学的強度を改善していること明らかである。
【００２４】
本発明消波構造物は、上記構成の複合主杭が、従来のように鋼杭を単独使用する場合にくらべて耐摩耗性覆管の分だけ外径を大きくしているので、同じ杭心距離をおいて立設する場合、鋼杭単独使用に比し本複合主杭の方が、隣接杭間の隙間を小さくし、したがって、より小径の消波材を使用してもその隙間から抜脱させないし、従来の中間杭を不要にするとか少なくともその本数を減らすことができるものであり、その経済的メリットは極めて大きい。
【００２５】
複合主杭を構成している鋼杭が、直接乾湿作用を受けることも波浪の衝接を受けることもないので、腐食や摩耗のおそれがなく、しかも、その複合主杭の剛性が鋼杭単独の場合に比べて大きいので、消波構造物全体の力学的強度もまた増大し、耐久性に富み、従来のように、波力を低減させて杭の摩耗被害を防ぐ消波工の設置を不要にすることができる。
【００２６】
消波構造物の沖側等の周辺に、格子状の敷設枠に消波材を乱積みしてなる根固め工を施工設置することにより、消波構造物の複合主杭が洗掘により倒壊するのを防止できるから、根固め工を組合せ施工した場合における本発明消波構造物の耐久性は一段と改善される。
【図面の簡単な説明】
【図１】本発明複合主杭の一実施形態の水底地盤起立状態の側面図である。
【図２】同上の拡大横断面図である。
【図３】同上の要部拡大断面図である。
【図４】本発明消波構造物の一実施形態例の概略正面図である。
【図５】同上の概略側面図である。
【図６】図４の消波構造物の上部覆工前の平面図である。
【図７】図４の要部拡大図である。
【図８】図６の要部拡大図である。
【図９】本発明消波構造物の他の実施形態例の概略側面図である。
【図１０】従来公知の消波構造物の側面図である。
【符号の説明】
ａ 本発明消波構造物用複合主杭
ｂ，ｃ 本発明消波構造物
ｅ 根固め工
ｆ 敷設枠
５ 鋼杭
５′ 鋼杭の頭端部
６ 耐摩耗性覆管
６′ 耐摩耗性覆管の頭端部
７ 砂利
８ コンクリート
９ 連結鋼材
１０ 消波材
１１ 上部覆工
１２ 鋼材
１３ 消波材[0001]
The present invention relates to a composite main pile for a wave-dissipating structure and its wave-dissipating structure for the purpose of improving the mechanical stability of the wave-dissipating structure and increasing the durability .
[0002]
[Prior art]
A wave-dissipating structure in which wave-dissipating materials such as stones or concrete blocks are piled up in an airspace enclosed by a plurality of piles erected on the bottom of the ground at a required interval, for example, as shown in FIG. A plurality of piles 1 (main piles and intermediate piles) are erected vertically and horizontally at the required interval on the bottom of the water, and the wave-dissipating material 2 such as stone or concrete block is disturbed in the air space where the piles 1 are enclosed. A wave-dissipating structure that has been piled up, constructed with a superstructure 3 at the upper end of the pile 1 and further constructed with a wave-dissipating work 4 on the offshore side is described in Japanese Patent Publication No. 62-37168, etc. It is conventionally known and is considered to be a very stable structure mechanically.
[0003]
[Problems to be solved by the invention]
However, steel piles such as H-shaped steel used as the above pile 1 are severely corroded in parts that repeat drying and wetting, and the corrosion rate is 0.3 mm / year, which is a very large value in the design standards for harbor structures and the like. It is about to be taken. For this reason, various anticorrosion methods have been proposed, but all have common disadvantages that they are both pros and cons, are expensive, and are difficult to construct.
[0004]
In addition, the steel piles are subject to wear damage caused by repeated impacts of powerful waves containing gravel on the seabed. A wave-dissipating work (see FIG. 10) installed on the offshore side of the wave-dissipating structure can greatly reduce wave power, and is effective as a countermeasure against the above-mentioned wear damage. However, there is a drawback of increasing the construction cost.
[0005]
The object of the present invention is to firstly eliminate the above-mentioned drawbacks, i.e., corrosion and wear of the pile, and secondly to further increase the mechanical stability of the wave-dissipating structure by increasing the strength of the pile itself, Third, unnecessary or less conventional intermediate piles, or it is not always necessary to install a wave breaker so that the desired wave breaker structure can be economically constructed, etc. It is in.
[0006]
[Means for Solving the Problems]
The composite main pile a for wave-dissipating structures of the present invention is a steel pile 5 that is placed on the bottom ground G and stands vertically, and is fitted to the steel pile 5 and is placed on the bottom bottom ground G and stands vertically. Fill the gap formed between the steel pipe 5 and the wear-resistant covering tube 6 with gravel 7 and concrete 8 and the like with the wear-resistant covering tube 6 such as prestressed concrete pipe. It will be.
[0007]
In the above, the steel pile 5 protrudes the head end portion 5 'of the required length from the water surface W, and the wear-resistant cover tube 6 protrudes the head end portion 6' of the required length from the water surface W. In addition, the gap formed between these steel piles 5 and the wear-resistant cladding 6 and gravel 7 is filled in a portion between the bottom bottom G and a position slightly below the water surface W. The concrete 8 is filled with the concrete 8 and more specifically, the center of the steel pile 5 and the wear-resistant cladding 6 are matched, and the head end of the steel pile 5 It will be appreciated that it is preferred to have the portion 5 'extend further upward from the head end 6' of the wear resistant cladding 6.
[0008]
The wave-dissipating structure of the present invention has a large number of the composite main piles a standing on the water bottom ground G at a required interval, and protrudes from the water surface W through the head end portion 6 'of the wear-resistant cover tube 6 of the composite main pile a. The head ends 5 'of the steel piles 5 are connected by a plurality of connecting steel materials 9, and a wave-dissipating material 10 such as a stone material or a concrete block is thrown into the air space where the multiple composite main piles a are enclosed. In addition to stacking, upper concrete (including reinforced concrete) is cast to construct an upper lining 11 in which the head end portion 5 ′ of the steel pile 5 and the connecting steel material 9 are embedded.
[0009]
It is possible to install a rooting work e formed by stacking the wave-dissipating material 13 on the grid-like laying frame f formed of the steel material 12 on the water bottom ground around the wave-dissipating structure. This is desirable because it can prevent collapse due to digging.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
FIGS. 1-3 shows the composite main pile a which concerns on one Embodiment of the composite main pile for this invention wave-dissipating structure.
5 is a steel pile made of H-shaped steel, which is placed on the bottom ground G by an appropriate means, and stands vertically with the head end 5 'of the required length protruding upward from the water surface W. ing.
Reference numeral 6 denotes a wear-resistant covering tube such as a prestressed concrete tube or a prestress high strength concrete (PHC) tube.
The wear-resistant cover tube 6 is driven into the bottom ground G by an appropriate means in the same manner as the steel pile 5 in the state of being fitted to the steel pile 5, and the head end portion 6 'having the required length is placed on the water surface. It stands upright in a state of protruding upward from W.
[0011]
The steel piles 5 and the wear-resistant cladding 6 are aligned with the center of the pile, and the head end portion 5 ′ of the steel pile 5 extends further upward from the head end portion 6 ′ of the wear-resistant cladding tube 6. ing.
[0012]
7 is a gravel filled in a space formed between the steel pile 5 and the wear-resistant covering tube 6 and between the bottom ground G and a position slightly below the water surface W.
8 is the concrete which filled the part which is the said space | gap and is located on the upper side of the gravel 7.
[0013]
As is clear from the above configuration, the steel pile 5 is embedded in the gravel 7 and the concrete 8 and is fitted with the wear-resistant cover tube 6 so that it does not receive direct wet and dry action and is directly waved. Of course, it will not corrode and will not wear out.
[0014]
Moreover, since this composite main pile a is literally a composite body comprising a steel pile 5 and a wear-resistant cladding tube 6 and gravel 7 and concrete 8 filled between them, a conventional steel pile is used. It is clear that the mechanical strength as a pile is increased compared to the case of a single case.
[0015]
4 to 8 show a wave-dissipating structure b according to an embodiment of the wave-dissipating structure of the present invention.
In this wave-dissipating structure b, a plurality of composite main piles a having the above-described configuration are erected at a predetermined interval (appropriate intervals at which the wave-dissipating material is not removed) on the water bottom ground G, the head of the composite main pile a, More specifically, the head end portion 5 ′ of the steel pile 5 protruding outward from the water surface W through the head end portion 6 ′ of the wear-resistant covering tube 6 is connected by a plurality of connecting steel members 9.
[0016]
After that, the wave-dissipating material 10 such as a stone or a concrete block is thrown into the air space where the multiple composite main piles a are enclosed, and the upper concrete (including reinforced concrete) is cast to the head of the steel pile 5 The upper lining 11 in which the end portion 5 ′ and the connecting steel material 9 are embedded is applied to complete the wave-dissipating structure b.
[0017]
In this wave-dissipating structure b, the composite main pile a has the same outer diameter as the outer diameter of the wear-resistant covering tube 6 as compared with the conventional case where a steel pile is used alone. When standing upright, the composite main pile a makes the gap between adjacent piles smaller than using a steel pile alone.
Therefore, even if a smaller-diameter wave-dissipating material is used, it cannot be removed from the gap, and the conventional intermediate pile can be dispensed with or at least the number thereof can be reduced.
[0018]
The steel pile 5 constituting the composite main pile a is not subjected to direct wet and dry action or direct wave contact, and there is no risk of corrosion or wear. Since it is larger than the case of 5 alone, the mechanical strength of the entire wave-dissipating structure b is also increased, and the durability is high.
Therefore, as in the prior art, in order to reduce the wave force and prevent the wear damage of the pile, it is possible to improve the economy that the wave-dissipating work 4 is constructed and installed off the wave-dissipating structure b.
[0019]
FIG. 9 shows a wave-dissipating structure c according to another embodiment of the wave-dissipating structure of the present invention.
The purpose of this wave-dissipating structure c is to improve the existing upright revetment d, which may receive destruction of the revetment itself by directly receiving a strong wave force or give a large vibration to nearby houses. It was constructed and installed in.
[0020]
That is, the wave-dissipating structure c is constructed and installed in the same manner as in the case of the wave-dissipating structure b on the front face of the upright revetment d, and further, the rooting work e is installed and installed on the front face thereof.
In this rooting work e, a plurality of steel members 12 are arranged vertically and horizontally to form a grid-like laying frame f on the offshore water bottom ground of the wave-dissipating structure c, and then escape from the grid. The wave-dissipating material 13 such as a stone material or a concrete block having a size to be engaged with it is piled up without being piled up.
[0021]
This root hardening e prevents the composite main pile a of the wave-dissipating structure c from being collapsed by scouring.
[0022]
【The invention's effect】
As is clear from the above description, the composite main pile for wave-dissipating structures of the present invention is fitted with a wear-resistant cladding tube on a steel pile that is placed on the bottom of the water and stands upright. Because the pile is filled with gravel, concrete, etc. between the pile and the abrasion-resistant cladding, the steel pile is not directly affected by the wet and dry action, nor is it directly subjected to the impact of waves. Of course, it will not corrode or wear.
[0023]
In addition, this composite main pile is literally a composite consisting of a steel pile, a wear-resistant cladding, and a filler filled between them, so that it can be used as a pile compared to a conventional steel pile alone. It is clear that the mechanical strength is improved.
[0024]
The wave-dissipating structure of the present invention has the same pile core because the composite main pile having the above configuration has a larger outer diameter than the conventional case where a steel pile is used alone. When standing up from a distance, this composite main pile reduces the gap between adjacent piles compared to using steel piles alone, so it can be removed from the gap even if a smaller diameter wave-dissipating material is used. It does not take off and makes the conventional intermediate pile unnecessary, or at least the number of the piles can be reduced, and its economic merit is extremely large.
[0025]
The steel piles that make up the composite main pile are not directly wetted or wetted, nor subjected to the impact of waves, so there is no risk of corrosion or wear, and the rigidity of the composite main pile is independent of the steel pile alone. As a result, the mechanical strength of the entire wave-dissipating structure also increases, and it is highly durable. It can be made unnecessary.
[0026]
The composite main pile of the wave-dissipating structure collapsed due to scouring by installing a caulking work that was constructed by laminating wave-dissipating materials on a grid-like laying frame around the offshore side of the wave-dissipating structure. Therefore, the durability of the wave-dissipating structure according to the present invention can be further improved when combined with a rooting work.
[Brief description of the drawings]
FIG. 1 is a side view of an embodiment of a composite main pile according to the present invention in a standing state of water bottom ground.
FIG. 2 is an enlarged cross-sectional view of the above.
FIG. 3 is an enlarged sectional view of the main part of the above.
FIG. 4 is a schematic front view of an embodiment of the wave-absorbing structure of the present invention.
FIG. 5 is a schematic side view of the above.
6 is a plan view of the wave-dissipating structure of FIG. 4 before the upper lining.
FIG. 7 is an enlarged view of a main part of FIG.
FIG. 8 is an enlarged view of a main part of FIG. 6;
FIG. 9 is a schematic side view of another embodiment of the wave-absorbing structure of the present invention.
FIG. 10 is a side view of a conventionally known wave-dissipating structure.
[Explanation of symbols]
a Composite main piles b and c for the wave-dissipating structure of the present invention Wave-dissipating structure of the present invention e Damping work f Laying frame 5 Steel pile 5 'Head end 6 of the steel pile Wear-resistant cover tube 6' Wear-resistant covering Pipe head end 7 gravel 8 concrete 9 connecting steel 10 wave-dissipating material 11 upper lining 12 steel material 13 wave-dissipating material

Claims (2)

水底地盤に打設され垂直に起立している鋼杭と、該鋼杭に嵌合するとともに水底地盤に打設され垂直に起立しているプレストレスト・コンクリート管等の耐磨耗性覆管と、これら鋼杭と耐磨耗性覆管との間に形成される空隙に砂利、コンクリート等の充填物を充填してなる複合主杭を、水底地盤に所要の間隔で多数立設し、その複合主杭の水面から外方に突出している鋼杭の頭端部を、複数本の連結鋼材により連結し、これにより生じた多数の複合主杭が囲繞区画する空域内に、石材またはコンクリートブロック等の消波材を投入乱積みするとともに、上部コンクリートを打設して鋼杭の頭端部と連結鋼材を埋設した上部覆工を施工したことを特徴とする消波構造物。 A steel pile placed on the bottom of the ground and standing vertically; and a wear-resistant cladding such as a prestressed concrete pipe that fits on the steel pile and is placed on the bottom of the ground and stands vertically; A large number of composite main piles with gravel, concrete, etc. filled in the gaps formed between these steel piles and wear-resistant cladding are installed on the water bottom ground at the required intervals. The head end of the steel pile that protrudes outward from the water surface of the main pile is connected by a plurality of connecting steel materials. The wave- dissipating structure is characterized by the fact that the wave-dissipating material is piled up and the upper concrete is cast and the top lining of the steel pile head and the connecting steel material is buried . 水底地盤に打設され垂直に起立している鋼杭と、該鋼杭に嵌合するとともに水底地盤に打設され垂直に起立しているプレストレスト・コンクリート管等の耐磨耗性覆管と、これら鋼杭と耐磨耗性覆管との間に形成される空隙に砂利、コンクリート等の充填物を充填してなる複合主杭を水底地盤に所要の間隔で多数立設し、その複合主杭の水面から外方に突出している鋼杭の頭端部を、複数本の連結鋼材により連結し、多数の複合主杭が囲繞区画する空域内に石材またはコンクリートブロック等の消波材を投入乱積みするとともに、上部コンクリートを打設して鋼杭の頭端部と連結鋼材を埋設した上部覆工を施工してなした消波構造物の前面側に、鋼材で形成した格子状の敷設枠を設け、該敷設枠内に消波材を乱積みしてなる根固め工を周辺の水底地盤に設置したことを特徴とする消波構造物。Steel piles that are placed on the bottom of the ground and are standing vertically, and wear-resistant cladding pipes such as prestressed concrete pipes that are fitted on the steel pile and are vertically placed on the bottom of the water, and A large number of composite main piles with gravel, concrete, etc. filled in the gaps formed between these steel piles and the abrasion-resistant cladding are installed on the water bottom ground at the required intervals. The head end of the steel pile protruding outward from the water surface of the pile is connected with multiple connecting steel materials, and a stone or concrete block or other wave-dissipating material is put into the airspace where many composite main piles are enclosed A grid-like laying made of steel on the front side of the wave-dissipating structure made by overloading and laying the top concrete and laying the top end of the steel pile and connecting steel. Set up a frame and remove the caulking material around the laying frame. Wave absorbing structure, characterized in that installed on the bottom ground.
JP15634898A 1998-06-04 1998-06-04 Wave-dissipating structure with composite main pile for wave-dissipating structure Expired - Fee Related JP3619951B2 (en)

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CN105672197B (en) * 2016-03-23 2017-11-10 上海勘测设计研究院有限公司 The method and structure of heightening and consolidation embankment
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