JP2680383B2 - High rigidity steel sheet pile - Google Patents
High rigidity steel sheet pileInfo
- Publication number
- JP2680383B2 JP2680383B2 JP29236588A JP29236588A JP2680383B2 JP 2680383 B2 JP2680383 B2 JP 2680383B2 JP 29236588 A JP29236588 A JP 29236588A JP 29236588 A JP29236588 A JP 29236588A JP 2680383 B2 JP2680383 B2 JP 2680383B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet pile
- steel sheet
- rigidity
- steel
- concrete
- 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.)
- Expired - Fee Related
Links
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
- Revetment (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、単位重量あたりの断面剛性を向上させた高
剛性鋼矢板に関するもので壁高の高い河川護岸や土留壁
に有利に適用することができる。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a high-rigidity steel sheet pile having improved cross-sectional rigidity per unit weight, and can be advantageously applied to river revetments and earth retaining walls with high wall height. You can
従来、河川護岸壁には、打込んだ鋼矢板や杭の上部に
コンクリートを打設したコンクリートＬ型壁あるいは鋼
矢板等が使用されている。また、土留壁には、連続地中
壁或はコンクリートＬ型壁、補強土工法（例えばテール
アルメ工法）壁等が使用されていた。Conventionally, a driven steel sheet pile, a concrete L-shaped wall in which concrete is placed on the top of a pile, a steel sheet pile, or the like has been used for a river revetment wall. As the earth retaining wall, a continuous underground wall, a concrete L-shaped wall, a reinforced earth method (for example, Tail Arme method) wall, etc. have been used.
しかし、コンクリートＬ型壁は仮設工事量が多く、工
期が長い欠点があり、鋼矢板は打込み抵抗が大で、ハン
ドリングに不便である。また、連続地中壁は壁面が凹凸
で仕上げが必要な欠点があり、補強土工法壁は背面掘削
量が大である欠点がある。However, the concrete L-shaped wall has a drawback that the amount of temporary work is large and the construction period is long, and the steel sheet pile has a large driving resistance, which is inconvenient for handling. In addition, the continuous underground wall has a drawback that the wall surface is uneven and needs to be finished, and the reinforced earth method wall has a drawback that the back excavation amount is large.
このような問題の対策として、特開昭56−156304号公
報には、護岸線上の地面から地中の所定深さに側縁が噛
み合うようにして鋼矢板を打込み切梁を設置すると共
に、この鋼矢板の内側の溝状に掘削したのち、鋼矢板の
露出面にコンクリート壁を設けることにより、排土量を
減少させ、工事日数を短縮する護岸の施工工程が提案さ
れている。As a measure against such a problem, in Japanese Patent Laid-Open No. 56-156304, a steel beam pile is installed so that a side edge is engaged with a predetermined depth in the ground from the ground on the revetment line, and a cutting beam is installed. It has been proposed to construct a revetment to reduce the amount of soil discharged and shorten the number of construction days by excavating a groove inside the steel sheet pile and then providing a concrete wall on the exposed surface of the steel sheet pile.
また、実開昭63−100535号公報には、コンクリートで
形成した矢板本体に矢板本体から突出せしめてＨ形鋼等
の鋼材を埋め込み、この鋼材を打設装置で掴んで打設す
るようにコンクリート矢板が提案されている。Further, in Japanese Utility Model Laid-Open No. 63-100535, concrete is manufactured by embedding a steel material such as an H-shaped steel into a sheet pile body made of concrete so as to project from the sheet pile body and gripping the steel material with a placing device. A sheet pile is proposed.
しかし、上記の特開昭56−156304号公報の鋼矢板とコ
ンクリートとの剛性構造による護岸の施工法は、左右の
護岸に打込んだ鋼矢板の間の溝に切梁及びストラッドを
配置し、鋼矢板の溝側にジベルを設けてコンクリートを
打設した後に、切梁及びストラッドを撤去する必要があ
り、手間がかかる欠点がある。However, the construction method of the revetment by the rigid structure of the steel sheet pile and concrete of the above-mentioned JP-A-56-156304, the cutting beam and straddle are arranged in the groove between the steel sheet piles driven into the left and right revetments, It is necessary to remove the beam and straddle after placing the concrete on the groove side of the steel sheet pile and placing the concrete, which is a troublesome task.
また、実開昭63−100535号公報のコンクリート矢板は
断面形状でコンクリート部の占める部分が大きく、強度
上問題がある。また、埋め込まれたＨ形鋼等の鋼材の露
出側のフランジは、打設装置で掴むためのものであり、
隣接した鋼材との継手がないので止水性も劣る欠点があ
る。Further, the concrete sheet pile disclosed in Japanese Utility Model Laid-Open No. 63-100535 has a problem in terms of strength since the concrete section occupies a large portion in the sectional shape. Further, the flange on the exposed side of the embedded steel material such as H-section steel is for gripping with a placing device,
Since it has no joint with adjacent steel materials, it also has the drawback of inferior waterproofness.
本発明は、上記従来の問題点を解決した、単位幅重量
あたりの断面剛性を向上させた高剛性鋼矢板を提供する
ことを目的とする。It is an object of the present invention to provide a high-rigidity steel sheet pile having improved cross-sectional rigidity per unit width weight, which solves the above conventional problems.
本発明は、直線形鋼矢板の幅方向中央部にCT形鋼のウ
エブ部先端を溶接し、前記CT形鋼のフランジ部にプレキ
ャストコンクリート版を挿入してなる単位幅重量あたり
の断面剛性を向上させた高剛性鋼矢板である。The present invention improves the cross-sectional rigidity per unit width weight by welding the web section tip of CT section steel to the widthwise center of the straight section steel sheet pile and inserting the precast concrete plate into the flange section of the CT section steel. It is a high rigidity steel sheet pile.
直線型鋼矢板とCT形鋼、コンクリート版とで構成する
剛性矢板で壁体を造成することにより、極めて高い剛性
が得られ、従来のような複雑な施工の必要がなく、壁高
の高いところでも迅速にかつ経済的に施工できる。By constructing a wall body with a rigid sheet pile composed of a straight type steel sheet pile, CT section steel and concrete slab, extremely high rigidity is obtained, and there is no need for complicated construction as in the past, and even in places with high wall height. Can be constructed quickly and economically.
直線型鋼矢板とコンクリート版の両面に２重の壁が形
成されるので、優れた止水性が得られる。Since double walls are formed on both sides of the straight-lined steel sheet pile and the concrete plate, excellent waterproofness can be obtained.
本発明の実施例を図面に基づいて説明する。 An embodiment of the present invention will be described with reference to the drawings.
まず、第１図は、従来の高剛性鋼矢板の横断面であ
る。図において、１は直線形鋼矢板、２は直線形鋼矢板
１の幅方向中央部にウエブの先端を溶接したCT形鋼であ
る。First, FIG. 1 is a cross section of a conventional high-rigidity steel sheet pile. In the figure, 1 is a straight steel sheet pile, and 2 is a CT steel in which the tip of a web is welded to the widthwise central portion of the straight steel sheet pile 1.
これに対して、第２図は、本発明の請求項（１）の高
剛性鋼矢板の一実施例の横断面図である。第２図の高剛
性鋼矢板において、500mm幅の直線形鋼矢板とCT−450×
300×16×28のCT形鋼２と50mmのコンクリート版３を用
いた場合、従来は8400cm4/mであったものが約343464cm4
/mの断面２次モーメントが得られ、さらに著しく断面剛
性が向上する。On the other hand, FIG. 2 is a cross-sectional view of one embodiment of the high-rigidity steel sheet pile according to claim (1) of the present invention. In the high-rigidity steel sheet pile shown in Fig. 2, a straight steel sheet pile of 500 mm width and CT-450 ×
When using 300 × 16 × 28 CT shaped steel 2 and 50mm concrete slab 3, it was about 343464cm 4 compared to 8400cm 4 / m in the past.
A second moment of area of / m is obtained and the rigidity of the section is significantly improved.
次に、本発明の高剛性鋼矢板による河川護岸の具体的
な施工例を第３図〜６図により説明する。Next, a concrete construction example of the river revetment using the high-rigidity steel sheet pile of the present invention will be described with reference to FIGS.
第３図のように、直線形鋼矢板１とCT形鋼２（望まし
くは突起付CT形鋼）を工場で溶接する。それを施工場所
に運び、圧入機又は杭打機で打込み、CT形鋼２のフラン
ジ部にプレキャストコンクリート版３を所定位置まで挿
入し、CT形鋼２との間の隙間にモルタル４を注入する。
その後、第４図のように、上部工５を施工して護岸工事
が完了する。第５図は第４図のＩ−Ｉ線断面図である。As shown in FIG. 3, the straight steel sheet pile 1 and the CT steel 2 (preferably the CT steel with protrusions) are welded at the factory. Bring it to the construction site, drive it with a press-in machine or a pile driver, insert the precast concrete slab 3 into the flange of CT section steel 2 to a predetermined position, and inject the mortar 4 into the gap between it and CT section steel 2. .
Then, as shown in FIG. 4, the superstructure 5 is constructed to complete the revetment work. FIG. 5 is a sectional view taken along the line I-I of FIG.
なお、直線形鋼矢板の爪の回転角は10〜12゜の範囲に
あるので曲線部でもスムーズに打込みが可能であるが、
必要により壁体の下部を爪部を有しないＨ形鋼の構造と
し打設スピードを上げることもできる。第６図はこの例
を示したもので、第６図は第４図のII−II線断面図であ
る。In addition, since the rotation angle of the claws of the straight steel sheet pile is in the range of 10 to 12 °, it is possible to drive smoothly even in curved parts,
If necessary, the lower part of the wall body can be made into an H-shaped steel structure having no claws to increase the driving speed. FIG. 6 shows this example, and FIG. 6 is a sectional view taken along line II-II of FIG.
また、プレキャストコンクリート版を除いた本発明の
高剛性鋼矢板は、連続地中壁のコア材としても使用可能
である。Further, the high-rigidity steel sheet pile of the present invention excluding the precast concrete plate can also be used as a core material for a continuous underground wall.
プレキャストコンクリート版は工場製作時に外面側に
模様付けを行ない、化粧材とすることにより、美観を向
上させることができる。The appearance of the precast concrete slab can be improved by patterning the outer surface of the precast concrete slab at the time of factory production and using it as a decorative material.
以上説明したように本発明の高剛性鋼矢板は従来の鋼
矢板に比べて単位重量あたりの断面剛性を大幅に向上し
たので、河川護岸や土留壁の施工を有利に使用すること
ができ、手間のかかる工事を必要とせず、背面を掘削す
る必要がなく、工事日数を短縮することができる。As described above, the high-rigidity steel sheet pile of the present invention has a significantly improved cross-sectional rigidity per unit weight as compared with the conventional steel sheet pile, so that it can be advantageously used for construction of river revetments and retaining walls, which is troublesome. No complicated construction is required and there is no need to excavate the back surface, and the number of construction days can be shortened.
また、直線型鋼矢板、CT形鋼、コンクリート版とで構
成した剛性矢板は、直線型鋼矢板とコンクリート版の両
面に２重の壁が形成されるので、優れた止水性が得られ
る。In addition, a rigid sheet pile composed of a straight steel sheet pile, a CT section steel and a concrete plate has double walls formed on both sides of the straight steel sheet pile and the concrete plate, so that excellent waterproofness can be obtained.
第１図は従来の高剛性鋼矢板の例である。第２図は本発
明の請求項（１）の高剛性鋼矢板の一実施例の横断面図
である。第３図〜第６図は本発明の請求項（１）の高剛
性鋼矢板の河川護岸に使用した例を示し、第３図は高剛
性鋼矢板の斜視図、第４図は河川護岸の断面図、第５図
は第４図のＩ−Ｉ線断面図、第６図は第４図のII−II線
断面図である。 １……直線形鋼矢板 ２……CT形鋼 ３……プレキャストコンクリートブロック ４……モルタル ５……上部工FIG. 1 is an example of a conventional high-rigidity steel sheet pile. FIG. 2 is a cross-sectional view of an embodiment of the high-rigidity steel sheet pile according to claim (1) of the present invention. 3 to 6 show examples of the high-rigidity steel sheet pile used in claim (1) of the present invention for river revetment, FIG. 3 is a perspective view of the high-rigidity steel sheet pile, and FIG. 4 is a river revetment. A sectional view, FIG. 5 is a sectional view taken along the line II of FIG. 4, and FIG. 6 is a sectional view taken along the line II-II of FIG. 1 …… Linear steel sheet pile 2 …… CT section steel 3 …… Precast concrete block 4 …… Mortar 5 …… Superstructure
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山口 昭 東京都千代田区内幸町２丁目２番３号 （日比谷国際ビル） 川崎製鉄株式会社 東京本社内 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Akira Yamaguchi 2-3-2 Uchisaiwaicho, Chiyoda-ku, Tokyo (Hibiya Kokusai Building) Kawasaki Steel Co., Ltd. Tokyo Head Office
Claims (2)
エブ部先端を溶接し、前記CT形鋼のフランジ部にプレキ
ャストコンクリート版を挿入してなる単位幅重量あたり
の断面剛性を向上させた高剛性鋼矢板。1. A cross-sectional rigidity per unit width weight obtained by welding a CT section steel web end to the widthwise center of a straight steel sheet pile and inserting a precast concrete plate into the CT section steel flange. Improved high rigidity steel sheet pile.
あることを特徴とする請求項（１）の高剛性鋼矢板。2. The high-rigidity steel sheet pile according to claim 1, wherein the prestressed concrete slab is a decorative material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29236588A JP2680383B2 (en) | 1988-11-21 | 1988-11-21 | High rigidity steel sheet pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29236588A JP2680383B2 (en) | 1988-11-21 | 1988-11-21 | High rigidity steel sheet pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02140313A JPH02140313A (en) | 1990-05-30 |
| JP2680383B2 true JP2680383B2 (en) | 1997-11-19 |
Family
ID=17780862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29236588A Expired - Fee Related JP2680383B2 (en) | 1988-11-21 | 1988-11-21 | High rigidity steel sheet pile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2680383B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008267069A (en) * | 2007-04-24 | 2008-11-06 | Nippon Steel Corp | Steel for underground continuous wall, underground continuous wall, and construction method of underground continuous wall |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0417431U (en) * | 1990-06-06 | 1992-02-13 | ||
| JPH0489121U (en) * | 1990-06-06 | 1992-08-04 | ||
| JP3049347B2 (en) * | 1994-05-17 | 2000-06-05 | 鹿島建設株式会社 | Earth retaining wall |
| JP4894087B2 (en) * | 2001-02-20 | 2012-03-07 | パナソニック株式会社 | Private branch exchange |
| GB2520548B (en) * | 2013-11-25 | 2020-10-07 | Dawson Const Plant Ltd | Sheet piling |
-
1988
- 1988-11-21 JP JP29236588A patent/JP2680383B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008267069A (en) * | 2007-04-24 | 2008-11-06 | Nippon Steel Corp | Steel for underground continuous wall, underground continuous wall, and construction method of underground continuous wall |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02140313A (en) | 1990-05-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |