JP2004162458A - Hat-shaped steel sheet pile - Google Patents
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- JP2004162458A JP2004162458A JP2002331761A JP2002331761A JP2004162458A JP 2004162458 A JP2004162458 A JP 2004162458A JP 2002331761 A JP2002331761 A JP 2002331761A JP 2002331761 A JP2002331761 A JP 2002331761A JP 2004162458 A JP2004162458 A JP 2004162458A
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Abstract
Description
【０００１】
【発明の属する技術分野】
本発明は、たとえば、土木建築分野における地下土留め、基礎構造および港湾、河川における護岸、さらには地中における止水壁に用いる鋼製部材としての鋼矢板に係り、特に、熱間圧延により製造されるハット型形状の鋼矢板に関するものである。
【０００２】
【従来の技術】
圧延鋼矢板としては、通常、図７に示されるようなＵ型鋼矢板が用いられる。Ｕ型鋼矢板は一般的に有効幅６００ｍｍのものが用いられるが、使用される構造物に応じて必要な断面二次モーメントに対応する鋼矢板を選択する必要が生じるため、断面二次モーメントが異なる複数種のＵ型鋼矢板が存在する。
一方、特許第２６８９７９４号公報に開示されている鋼矢板がある。この鋼矢板は、通常ハット型鋼矢板として分類されているが、図９に示されるように、継手が壁面の端部に位置するために継手効率の低減が不要であるという特徴を有している。
【０００３】
【特許文献１】特許第２６８９７９４号公報。
【特許文献２】特開平１１−３３６０７６号公報。
【０００４】
【発明が解決しようとする課題】
ここでＵ型鋼矢板と既存のハット型鋼矢板とを、横軸に壁幅１ｍ当たりの単位重量（ｗ：ｋｇ／ｍ２）、縦軸に断面二次モーメント（Ｉ：ｃｍ４／ｍ）として比較したものが図２である。図２においてはＵ型鋼矢板の継手効率を０．８として図示している。図２から、既存のハット型鋼矢板はＵ型鋼矢板と比較し、断面二次モーメント（Ｉ）当たりの単位重量（ｗ）が重いため不経済である。
【０００５】
また、図８に示されるように既存のハット型鋼矢板の寸法は、有効幅が６００ｍｍ、高さが２００ｍｍ、フランジ幅が約２６０ｍｍ、フランジ厚１３ｍｍである。この既存のハット型鋼矢板を打設又は引抜き施工方法として特開平１１−３３６０７６号公報には、図１０に示されるように既存のハット型鋼矢板をバイブロハンマーにより行う際、バイブロハンマーのチャックでハット型鋼矢板のアーム部を把持する発明が開示されている。これは、既存のハット型鋼矢板のフランジ幅が２６０ｍｍと狭く、通常のバイブロハンマーでの施工が困難であるため、特殊なバイブロハンマーを使用するものであり、施工費用が高価なものとなる。
【０００６】
本発明は、従来の圧延鋼矢板のもつ前記課題を解決した経済性の高いハット型鋼矢板を提供することを目的とする。
【０００７】
【課題を解決するための手段】
本第１発明は、前記課題を解決するために、ハット型鋼矢板において、壁幅１ｍ当たりの単位重量（ｗ：ｋｇ／ｍ２）と断面二次モーメント（Ｉ：ｃｍ４／ｍ）の関係が下記（１）式を満足し、かつ、有効幅（Ｂ：ｍｍ）とフランジ幅（Ｂｆ：ｍｍ）の関係が下記（２）式を満足することを特徴とする。
ｗ＜Ｉ／（４７０）＋８０ ・・・・・・・・・・（１）
Ｂｆ＜０．０００５（Ｂ）２−０．０５（Ｂ） ・・・・（２）
【０００８】
本第２発明は、本第１発明のハット型鋼矢板において、有効幅（Ｂ）が８１０ｍｍ以上であり、かつフランジ部の幅厚比が座屈応力度の低減が不要な幅厚比を有していることを特徴とする。
【０００９】
本第３発明は、本第１又は第２発明のハット型鋼矢板において、フランジ部の幅厚比が３２．４以下であることを特徴とする。
【００１０】
【発明の実施の形態】
図１に示されるように、ハット型鋼矢板１は中央のフランジ部２と、フランジ部２の両端から斜め方向に伸びるウェブ部３と、ウェブ部３から横方向にフランジ部２と平行に伸びるアーム部４と、アーム部４の端部に形成される継手部５により構成される。
ハット型鋼矢板の壁幅１ｍ当たりの単位重量（ｗ）と断面二次モーメント（Ｉ）を示す図２からみて、ハット型鋼矢板の経済性を少なくともＵ型鋼矢板以上とするためには、図２のＵ型鋼矢板の場合の直線の左側に位置させるということである。図２からみて、既存のＵ型鋼矢板の単位重量（ｗ）と断面二次モーメント（Ｉ）との関係は線形関係にあり、次の式が成立する。
Ｉ＝４７０ｗ−３８０００
したがって、少なくとも既存のＵ型鋼矢板より経済的にすぐれたハット型鋼矢板を提供するためには、次の（１）式を満足すればよい。
ｗ＜Ｉ／（４７０）＋８０ ・・・（１）
【００１１】
一定の断面二次モーメント（Ｉ）を確保してハット型鋼矢板の単位重量を確保するためには、
（１）有効幅（Ｂ）を大きくする。
（２）断面高さ（Ｈ）を低くする。
（３）板厚（ｔ）を薄くする。
という方法が考えられる。
しかし、前記（２）（３）の方法では単位重量（ｗ）の減少よりも断面二次モーメント（Ｉ）の減少に大きく影響するため効果的でない。また、ハット型鋼矢板の板厚を薄くすることは圧延能力の制約を受けるため、（１）の有効幅を大きくすることが最も効果的な方法である。
【００１２】
ハット型鋼矢板の断面高さ（Ｈ）をできるだけ低くしつつ、（１）式を満足するように、有効幅（Ｂ）及び各部の形状の検討を行なった。その結果、断面二次モーメント（Ｉ）を確保してハット型鋼矢板の単位重量（ｗ）を軽減するためには、有効幅（Ｂ）を広くする場合に、フランジ幅（Ｂｆ）を有効幅（Ｂ）の所定割合以下に抑えることが効果的であることが判明した。図３は横軸にハット型鋼矢板の有効幅（Ｂ）、縦軸にフランジ幅（Ｂｆ）／有効幅（Ｂ）との関係を示したものである。この関係は、断面二次モーメント（Ｉ）が異なるハット型鋼矢板でもほぼ直線関係にある。すなわち、所定の有効幅（Ｂ）に対して、単位重量（ｗ）を軽減するためには、次の（２）式を満足することにより達成される。
Ｂｆ＜０．０００５（Ｂ）２−０．０５（Ｂ） ・・・・・（２）
【００１３】
ところで、通常使用されるバイブロハンマーのチャッキングのサイズは２００〜２５０ｍｍであり、チャッキングの余裕代を考慮するとフランジ幅（Ｂｆ）は最低２９０ｍｍ必要である。既存のハット型鋼矢板はフランジ幅（Ｂｆ）が２６０ｍｍしかないため、バイブロハンマーでフランジ部をチャッキングして施工ができない。したがって、特開平１１−３３６０７６号公報に開示されているように、アーム部をチャッキングする特殊な装置によって打ち込み、引き抜く施工を行なっている。これは、ハット型鋼矢板の有効幅が６００ｍｍと小さいためである。したがって、図４に示されるように通常のバイブロハンマーを用いて、フランジ部をチャッキングして施工するためにはフランジ幅（Ｂｆ）が２９０ｍｍ以上となり、かつ式（２）を満足するためには、有効幅（Ｂ）は、８１０ｍｍ以上である必要がある。
【００１４】
しかし、無制限に有効幅（Ｂ）を増加させることは圧延製造設備の制約上、不可能である。また、有効幅（Ｂ）およびフランジ幅（Ｂｆ）が広くなり、フランジ部の幅厚比が大きくなると、局部座屈が発生するおそれがある。すなわち、ハット型鋼矢板打設時の施工荷重により局部座屈が生じると打設不能に陥る。また、ハット型鋼矢板を土留め壁として使用中に局部座屈が生じると、土留め壁の崩壊につながるおそれがある。一方、局部座屈をさけるための設計として、必要以上の大きなハット型鋼矢板を用いることにより発生応力度を低く抑えることも可能であるが、極めて不経済な構造物となる。
【００１５】
道路橋・示方書鋼橋編のＰ１４７〜Ｐ１４８の表−３．２．２両縁支持板の局部座屈に対する許容応力度には、鋼種がＳＭ４９０Ｙの場合、局部座屈による許容応力度の低減を行なわない幅厚比が３２．４であることが示されており、この幅厚比以下であれば、局部座屈が発生しないため、耐力と変形性能に優れていることになる。
【００１６】
（実施形態１）
図５に示される本発明の一実施形態のハット型鋼矢板は、有効幅（Ｂ）が９００ｍｍ、フランジ幅（Ｂｆ）が２９０ｍｍ、フランジ厚（ｔ）が１１ｍｍ、断面高さ（Ｈ）が２３０ｍｍ、断面二次モーメントが約１０，０００ｃｍ４／ｍ、単位重量（ｗ）が約９４ｋｇ／ｍ２である。
これを（２）式で計算すると、
１００００／（４７０）＋８０＝１０１＞単位重量（ｗ）＝９４
となり、（２）式を満足し、
幅厚比＝２９０／１１＝２６．４＜３２．４
となり、幅厚比も満足する。
【００１７】
（実施形態２）
図６に示される本発明の他の実施形態のハット型鋼矢板は、有効幅（Ｂ）が９００ｍｍ、フランジ幅（Ｂｆ）が３４０ｍｍ、フランジ厚（ｔ）が１３ｍｍ、断面高さ（Ｈ）が３００ｍｍ、断面二次モーメントが約２５，０００ｃｍ４／ｍ、単位重量（ｗ）が約１２４ｋｇ／ｍ２である。
これを（２）式で計算すると、
２５０００／（４７０）＋８０＝１３３＞単位重量（ｗ）＝１２４
となり、（２）式を満足し、
幅厚比＝３４０／１３＝２６．１＜３２．４
となり、幅厚比も満足する。
ここで説明に用いた実施例では、鍵型継手の例を示したが、二重爪型や柄爪型継手でもよく、継手形状を限定するものではない。
【００１８】
【発明の効果】
本発明の構成により、従来のＵ型鋼矢板及びハット型鋼矢板と比較し、広幅で経済性にすぐれたハット型鋼矢板を提供可能とする。
また、本発明のハット型鋼矢板はフランジ幅が広いのでフランジ部をチャッキングしたバイブロハンマー施工が容易となり、特殊な機械を必要としない。
本発明の構成により、鋼材の許容応力度の低減が不要であり、かつ塑性変形性能に優れている。
【図面の簡単な説明】
【図１】本発明のハット型鋼矢板を示す図。
【図２】鋼矢板の断面二次モーメントと単位重量の関係を示す図。
【図３】鋼矢板の有効幅とフランジ幅／有効幅の関係を示す図。
【図４】ハット型鋼矢板のバイブロハンマーのフランジ部をチャッキングした打設を示す図。
【図５】本発明のハット型鋼矢板の一実施形態を示す図。
【図６】本発明のハット型鋼矢板の他の実施形態を示す図。
【図７】従来のＵ型鋼矢板を示す図。
【図８】従来のハット型鋼矢板を示す図。
【図９】ハット型鋼矢板の連結状態を示す図。
【図１０】従来のハット型鋼矢板のバイブロハンマーのアーム部をチャッキングした打設を示す図。
【符号の説明】
１：ハット型鋼矢板
２：フランジ部
３：ウェブ部
４：アーム部
５：継手[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to, for example, steel sheet piles used as steel members for underground retaining walls in the field of civil engineering and construction, foundation structures and harbors, seawalls in rivers, and water barriers in the ground, and particularly manufactured by hot rolling. The present invention relates to a hat-shaped steel sheet pile to be used.
[0002]
[Prior art]
As a rolled steel sheet pile, a U-shaped steel sheet pile as shown in FIG. 7 is usually used. Generally, a U-shaped steel sheet pile having an effective width of 600 mm is used. However, since it is necessary to select a steel sheet pile corresponding to a required second moment of area according to a structure to be used, the second moment of area is different. There are several types of U-shaped sheet piles.
On the other hand, there is a steel sheet pile disclosed in Japanese Patent No. 2689794. This steel sheet pile is generally classified as a hat-type steel sheet pile, but as shown in FIG. 9, it has a feature that the joint is located at the end of the wall surface, so that there is no need to reduce the joint efficiency. .
[0003]
[Patent Document 1] Japanese Patent No. 2689794.
[Patent Document 2] JP-A-11-336076.
[0004]
[Problems to be solved by the invention]
Here, the U-shaped steel sheet pile and the existing hat-shaped steel sheet pile are compared with the unit weight per 1 m of wall width (w: kg / m 2 ) on the horizontal axis and the second moment of area (I: cm 4 / m) on the vertical axis. FIG. 2 shows the result. In FIG. 2, the joint efficiency of the U-shaped steel sheet pile is shown as 0.8. From FIG. 2, the existing hat-type steel sheet pile is uneconomical because the unit weight (w) per second moment of inertia (I) is larger than that of the U-type steel sheet pile.
[0005]
As shown in FIG. 8, the dimensions of the existing hat-shaped steel sheet pile are an effective width of 600 mm, a height of 200 mm, a flange width of about 260 mm, and a flange thickness of 13 mm. Japanese Patent Application Laid-Open No. 11-336076 discloses a method of driving or drawing the existing hat-shaped steel sheet pile, as shown in FIG. An invention for holding an arm portion of a sheet pile is disclosed. Since the conventional hat-type steel sheet pile has a narrow flange width of 260 mm and is difficult to perform with a normal vibro-hammer, a special vibro-hammer is used, and the construction cost is high.
[0006]
An object of the present invention is to provide a highly economical hat-type steel sheet pile that has solved the above-mentioned problems of the conventional rolled steel sheet pile.
[0007]
[Means for Solving the Problems]
According to the first invention, in order to solve the above-mentioned problem, in a hat-type steel sheet pile, a relation between a unit weight per 1 m of a wall width (w: kg / m 2 ) and a second moment of area (I: cm 4 / m) is provided. It is characterized in that the following formula (1) is satisfied and the relationship between the effective width (B: mm) and the flange width (Bf: mm) satisfies the following formula (2).
w <I / (470) +80 (1)
Bf <0.0005 (B) 2 −0.05 (B) (2)
[0008]
According to a second aspect of the present invention, in the hat-type steel sheet pile of the first aspect, the effective width (B) is 810 mm or more, and the width-to-thickness ratio of the flange portion has a width-to-thickness ratio that does not require reduction of the buckling stress degree. It is characterized by having.
[0009]
The third invention is characterized in that in the hat-type steel sheet pile of the first or second invention, the width-to-thickness ratio of the flange portion is 32.4 or less.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
As shown in FIG. 1, a hat-shaped
From FIG. 2 showing the unit weight (w) and the second moment of area (I) per 1 m of the wall width of the hat-type steel sheet pile, in order to make the economic efficiency of the hat-type steel sheet pile at least higher than that of the U-type sheet pile, FIG. That is, it is located on the left side of the straight line in the case of U-shaped steel sheet pile. 2, the relationship between the unit weight (w) of the existing U-shaped steel sheet pile and the second moment of area (I) has a linear relationship, and the following equation is established.
I = 470w-38000
Therefore, in order to provide a hat-type steel sheet pile that is more economical than at least the existing U-type sheet pile, the following expression (1) should be satisfied.
w <I / (470) +80 (1)
[0011]
In order to secure a constant second moment of area (I) and secure the unit weight of the hat-shaped steel sheet pile,
(1) Increase the effective width (B).
(2) Reduce the section height (H).
(3) The plate thickness (t) is reduced.
There is a method that can be considered.
However, the methods (2) and (3) are not effective because the reduction in the unit moment of area (I) is more greatly affected than the reduction in the unit weight (w). In addition, since reducing the thickness of the hat-type steel sheet pile is limited by the rolling capacity, increasing the effective width of (1) is the most effective method.
[0012]
The effective width (B) and the shape of each part were examined so that the sectional height (H) of the hat-shaped steel sheet pile was reduced as much as possible while satisfying the expression (1). As a result, in order to secure the second moment of area (I) and reduce the unit weight (w) of the hat-shaped steel sheet pile, when the effective width (B) is increased, the flange width (Bf) is changed to the effective width ( It has been found that it is effective to suppress the ratio to B) or less. FIG. 3 shows the relationship between the effective width (B) of the hat-type steel sheet pile on the horizontal axis and the flange width (Bf) / effective width (B) on the vertical axis. This relationship is substantially linear even in hat-shaped steel sheet piles having different second moments of area (I). That is, for the predetermined effective width (B), the unit weight (w) can be reduced by satisfying the following expression (2).
Bf <0.0005 (B) 2 −0.05 (B) (2)
[0013]
By the way, the chucking size of a commonly used vibro hammer is 200 to 250 mm, and the flange width (Bf) needs to be at least 290 mm in consideration of the margin of chucking. Since the existing hat-type steel sheet pile has a flange width (Bf) of only 260 mm, it cannot be constructed by chucking the flange portion with a vibro-hammer. Therefore, as disclosed in Japanese Patent Application Laid-Open No. H11-336076, a special device for chucking the arm portion is used to drive and pull out the arm. This is because the effective width of the hat-type steel sheet pile is as small as 600 mm. Therefore, as shown in FIG. 4, the flange width (Bf) becomes 290 mm or more in order to chuck and perform the flange portion using a normal vibro hammer, and in order to satisfy the expression (2), , The effective width (B) needs to be 810 mm or more.
[0014]
However, it is impossible to increase the effective width (B) indefinitely due to the limitations of the rolling production equipment. Further, when the effective width (B) and the flange width (Bf) are widened and the width-to-thickness ratio of the flange portion is large, local buckling may occur. In other words, if local buckling occurs due to the construction load at the time of placing a hat-type steel sheet pile, it becomes impossible to drive. In addition, if local buckling occurs during use of the hat-type steel sheet pile as a retaining wall, the retaining wall may be collapsed. On the other hand, as a design for avoiding local buckling, it is possible to suppress the generated stress degree by using an unnecessarily large hat-shaped steel sheet pile, but this is an extremely uneconomical structure.
[0015]
Table 3.2.2 on P147 to P148 of Highway Bridges and Specifications Steel Bridge Edition, Table 3.2.2 Allowable stress for local buckling of both-sided support plate, when steel type is SM490Y, reduction of allowable stress due to local buckling It is shown that the width-to-thickness ratio at which the above-mentioned process is not performed is 32.4. If the width-to-thickness ratio is equal to or less than this, local buckling does not occur, so that the proof stress and the deformation performance are excellent.
[0016]
(Embodiment 1)
The hat-type steel sheet pile of one embodiment of the present invention shown in FIG. 5 has an effective width (B) of 900 mm, a flange width (Bf) of 290 mm, a flange thickness (t) of 11 mm, a sectional height (H) of 230 mm, The second moment of area is about 10,000 cm 4 / m, and the unit weight (w) is about 94 kg / m 2 .
When this is calculated by equation (2),
10,000 / (470) + 80 = 101> unit weight (w) = 94
And satisfying the expression (2),
Width / thickness ratio = 290/11 = 26.4 <32.4
And the width-thickness ratio is also satisfied.
[0017]
(Embodiment 2)
The hat-type steel sheet pile of another embodiment of the present invention shown in FIG. 6 has an effective width (B) of 900 mm, a flange width (Bf) of 340 mm, a flange thickness (t) of 13 mm, and a cross-sectional height (H) of 300 mm. , The second moment of area is about 25,000 cm 4 / m, and the unit weight (w) is about 124 kg / m 2 .
When this is calculated by equation (2),
25000 / (470) + 80 = 133> unit weight (w) = 124
And satisfying the expression (2),
Width / thickness ratio = 340/13 = 26.1 <32.4
And the width-thickness ratio is also satisfied.
In the embodiment used here, the example of the key type joint is shown, but a double claw type or a handle type joint may be used, and the shape of the joint is not limited.
[0018]
【The invention's effect】
According to the configuration of the present invention, a hat-type steel sheet pile that is wider and more economical than conventional U-type sheet piles and hat-type sheet piles can be provided.
Further, since the hat-type steel sheet pile of the present invention has a wide flange width, it is easy to apply a vibratory hammer with a chucked flange portion, and does not require a special machine.
According to the configuration of the present invention, it is not necessary to reduce the allowable stress of the steel material, and the steel material is excellent in plastic deformation performance.
[Brief description of the drawings]
FIG. 1 is a view showing a hat-type steel sheet pile of the present invention.
FIG. 2 is a view showing a relationship between a second moment of area of a steel sheet pile and a unit weight.
FIG. 3 is a diagram showing a relationship between an effective width of a steel sheet pile and a flange width / effective width.
FIG. 4 is a view showing a casting in which a flange portion of a vibro hammer of a hat-type steel sheet pile is chucked.
FIG. 5 is a view showing one embodiment of a hat-type steel sheet pile of the present invention.
FIG. 6 is a view showing another embodiment of the hat-type steel sheet pile of the present invention.
FIG. 7 is a view showing a conventional U-shaped steel sheet pile.
FIG. 8 is a view showing a conventional hat-type steel sheet pile.
FIG. 9 is a view showing a connection state of a hat-type steel sheet pile.
FIG. 10 is a view showing a conventional hat-type steel sheet pile with a vibratory hammer in which an arm portion is chucked.
[Explanation of symbols]
1: Hat-shaped steel sheet pile 2: Flange 3: Web 4: Arm 5: Coupling
Claims (3)
ｗ＜Ｉ／（４７０）＋８０ ・・・・・・・・・・（１）
Ｂｆ＜０．０００５（Ｂ）２−０．０５（Ｂ） ・・・・（２）In a hat-type steel sheet pile, the relationship between the unit weight (w) per 1 m of the wall width and the second moment of area (I) satisfies the following expression (1), and the relationship between the effective width (B) and the flange width (Bf). Satisfies the following expression (2).
w <I / (470) +80 (1)
Bf <0.0005 (B) 2 −0.05 (B) (2)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002331761A JP3458109B1 (en) | 2002-11-15 | 2002-11-15 | Hat-type steel sheet pile |
| EP03021193.2A EP1420116B1 (en) | 2002-11-15 | 2003-09-24 | Metal sheet pile |
| CNB031602363A CN1229553C (en) | 2002-11-15 | 2003-09-28 | Metal sheet pile |
| KR1020030067225A KR100571076B1 (en) | 2002-11-15 | 2003-09-29 | Metal sheet file |
| US10/673,141 US6939086B2 (en) | 2002-11-15 | 2003-09-30 | Metal sheet pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002331761A JP3458109B1 (en) | 2002-11-15 | 2002-11-15 | Hat-type steel sheet pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP3458109B1 JP3458109B1 (en) | 2003-10-20 |
| JP2004162458A true JP2004162458A (en) | 2004-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002331761A Expired - Lifetime JP3458109B1 (en) | 2002-11-15 | 2002-11-15 | Hat-type steel sheet pile |
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| Country | Link |
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| JP (1) | JP3458109B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006088176A (en) * | 2004-09-22 | 2006-04-06 | Jfe Steel Kk | Method for manufacturing hat shape steel sheet pile |
| US8678713B2 (en) | 2011-02-01 | 2014-03-25 | Jfe Steel Corporation | Hat-type steel sheet pile |
| CN109923266A (en) * | 2016-11-17 | 2019-06-21 | 杰富意钢铁株式会社 | Hat steel sheet pile and wall body |
| JPWO2020045115A1 (en) * | 2018-08-31 | 2021-08-10 | 日本製鉄株式会社 | Manufacturing method of hat-shaped steel sheet pile and steel sheet pile wall |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5736866B2 (en) * | 2011-03-16 | 2015-06-17 | Ｊｆｅスチール株式会社 | Cross-sectional shape setting method for Z-shaped steel sheet pile |
-
2002
- 2002-11-15 JP JP2002331761A patent/JP3458109B1/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006088176A (en) * | 2004-09-22 | 2006-04-06 | Jfe Steel Kk | Method for manufacturing hat shape steel sheet pile |
| US8678713B2 (en) | 2011-02-01 | 2014-03-25 | Jfe Steel Corporation | Hat-type steel sheet pile |
| CN109923266A (en) * | 2016-11-17 | 2019-06-21 | 杰富意钢铁株式会社 | Hat steel sheet pile and wall body |
| JPWO2020045115A1 (en) * | 2018-08-31 | 2021-08-10 | 日本製鉄株式会社 | Manufacturing method of hat-shaped steel sheet pile and steel sheet pile wall |
| JP2022120101A (en) * | 2018-08-31 | 2022-08-17 | 日本製鉄株式会社 | Hat-shaped steel sheet pile and manufacturing method of steel sheet pile wall |
| JP7143888B2 (en) | 2018-08-31 | 2022-09-29 | 日本製鉄株式会社 | Manufacturing method of hat-shaped steel sheet pile |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3458109B1 (en) | 2003-10-20 |
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