JP2637335B2 - Mountain retaining pile - Google Patents
Mountain retaining pileInfo
- Publication number
- JP2637335B2 JP2637335B2 JP4196999A JP19699992A JP2637335B2 JP 2637335 B2 JP2637335 B2 JP 2637335B2 JP 4196999 A JP4196999 A JP 4196999A JP 19699992 A JP19699992 A JP 19699992A JP 2637335 B2 JP2637335 B2 JP 2637335B2
- Authority
- JP
- Japan
- Prior art keywords
- pile
- reinforcing plate
- steel
- steel pile
- mountain retaining
- 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
- Piles And Underground Anchors (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】この発明は、主に根切り工事に使
用される山留め杭に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mountain retaining pile mainly used for excavation work.
【０００２】[0002]
【従来の技術】一般に、根切りに伴う地山の崩壊を防ぐ
ために構築される山留壁には、鋼杭としてＨ形鋼がよく
使用される。また、山留め壁の受ける土圧は深くなる程
大きくなり、この最大土圧による曲げ応力を設計用曲げ
応力として鋼杭の径は決定される。2. Description of the Related Art In general, H-shaped steel is often used as a steel pile for a retaining wall constructed to prevent collapse of ground due to root cutting. Further, the deeper the earth pressure received by the retaining wall becomes, the larger the bending stress due to the maximum earth pressure is determined as the design bending stress, and the diameter of the steel pile is determined.
【０００３】[0003]
【発明が解決しようとする課題】しかし、鋼杭の径をこ
の様な方法で決めたのでは、鋼杭の径が大きくなりがち
できわめて不経済となるばかりでなく、重量が増して運
搬などの取り扱いも困難になりやすい等の課題がある。However, if the diameter of the steel pile is determined by such a method, the diameter of the steel pile tends to increase, which is not only uneconomical, but also increases the weight and increases the transportation. There is a problem that it is difficult to handle the materials.
【０００４】この発明は、以上の課題を解決するために
なされたもので、経済性および軽量化などを図った山留
め杭を提供することを目的とする。[0004] The present invention has been made to solve the above problems, and an object of the present invention is to provide a mountain retaining pile which is economical and lightweight.
【０００５】[0005]
【課題を解決するための手段】この発明に係る山留め杭
は、Ｈ形鋼からなる鋼杭のフランジの左右縁端部に土圧
に対する曲げ強度を高める補強プレートを突設し、かつ
この補強プレートを前記鋼杭の下方向に徐々に幅広とな
るように形成してなる。According to a first aspect of the present invention, there is provided a retaining pile according to the present invention, wherein a reinforcing plate for increasing bending strength against earth pressure is projected from right and left edge portions of a flange of a steel pile made of H-section steel, and the reinforcing plate is provided. Is formed so as to gradually become wider in the downward direction of the steel pile.
【０００６】また、補強プレートを前記鋼杭のフランジ
の中央部にウェブと同一平面上に一致させて突設し、か
つこの補強プレートを前記鋼杭の下方向に徐々に幅広と
なるように形成してなる。さらに、補強プレートは三角
形状に形成されている。A reinforcing plate is formed at the center of the flange of the steel pile so as to be flush with the web so as to be flush with the web, and the reinforcing plate is formed so as to be gradually widened in a downward direction of the steel pile. Do it. Further, the reinforcing plate is formed in a triangular shape.
【０００７】[0007]
【実施例】実施例１． 図１および図２は、この発明に係る山留め杭の一実施例
を示し、図１はその斜視図、図２はその横断面図であ
る。図において、符号１はＨ形鋼からなる鋼杭、２は鋼
杭１の土圧に対する曲げ強度を高めるために取り付けら
れた補強プレートである。鋼杭１の径は、根切りの比較
的浅い部分の土圧による曲げ応力を設計用曲げ応力とし
て決められ、材料コストの低減化、軽量化を図るべく可
能な限り径の細いＨ形鋼が使用されている。[Embodiment 1] 1 and 2 show an embodiment of a mountain retaining pile according to the present invention. FIG. 1 is a perspective view thereof, and FIG. 2 is a transverse sectional view thereof. In the drawings, reference numeral 1 denotes a steel pile made of an H-shaped steel, and 2 denotes a reinforcing plate attached to increase the bending strength of the steel pile 1 against earth pressure. The diameter of the steel pile 1 is determined by the bending stress due to the earth pressure at the relatively shallow part of the root cut as the design bending stress. To reduce the material cost and reduce the weight, an H-section steel having the smallest possible diameter is used. It is used.
【０００８】また、根切りが深く土圧による曲げ応力の
大きくなる部分は、フランジ1aの左右縁端部に補強プレ
ート２を取り付けることにより土圧に対する曲げ耐力が
高められている。Further, in a portion where the root is deep and where the bending stress due to the earth pressure becomes large, the bending resistance against the earth pressure is increased by attaching the reinforcing plates 2 to the left and right edges of the flange 1a.
【０００９】補強プレート２は鋼杭１の上下方向に連続
する細長い板状に形成され、かつ鋼杭１のフランジ1aの
左右縁端部に溶接することにより取り付けられ、さらに
鋼杭１の中立軸がずれないように、中立軸ａ−ａを中心
に両側のフランジ1a,1a の左右縁端部に対称に取り付け
られている（図２参照）。The reinforcing plate 2 is formed in the shape of an elongated plate continuous in the vertical direction of the steel pile 1 and is attached by welding to the left and right edges of the flange 1 a of the steel pile 1. The flanges 1a, 1a on both sides are symmetrically attached to the left and right edges around the neutral axis aa so as not to shift (see FIG. 2).
【００１０】なお、Ｈ形鋼を圧延成形ではなく、溶接に
よって形成する場合には補強プレート２をフランジ1aと
一体的に形成してもよい。When the H-section steel is formed by welding instead of rolling, the reinforcing plate 2 may be formed integrally with the flange 1a.
【００１１】このように、土圧による曲げ応力の大きく
なる部分に補強プレート２を取り付けることにより、こ
の部分の中立軸ａ−ａに対する断面２次モ−メントが割
増しされて、山留め杭１の土圧に対する曲げ強度が著し
く高められる。As described above, by attaching the reinforcing plate 2 to the portion where the bending stress due to the earth pressure increases, the secondary moment of the section with respect to the neutral axis aa is increased, and the soil of the pile retaining pile 1 is increased. The bending strength against pressure is significantly increased.
【００１２】図３および図４は、この発明に係る山留め
杭の他の実施例を示し、図３はその斜視図、図４はその
横断面図である。図において、符号１は鋼杭、３は補強
プレートである。鋼杭１には実施例１のものと全く同じ
ものが使用されているため、符号のみを付しその説明を
省略する。3 and 4 show another embodiment of the pile retaining pile according to the present invention. FIG. 3 is a perspective view thereof, and FIG. 4 is a cross sectional view thereof. In the drawing, reference numeral 1 denotes a steel pile, and 3 denotes a reinforcing plate. Since the same pile as that of the first embodiment is used for the steel pile 1, only the reference numeral is attached and the description is omitted.
【００１３】補強プレート３は、フランジ1aのほぼ中央
部にウェブ1bと同一平面上に一致するように取り付けら
れている。また、補強プレート３は、補強プレート２と
同様に根切りが深く、土圧による曲げ応力の大きい部分
に取り付けられ、かつ鋼杭１の中立軸がずれないように
両側のフランジ1a,1a の中央部に中立軸ａ−ａを中心に
対称に取り付けられている（図４参照）。The reinforcing plate 3 is mounted substantially at the center of the flange 1a so as to be flush with the web 1b. Further, the reinforcing plate 3 is attached to a portion where the root is deep and the bending stress is large due to earth pressure, similarly to the reinforcing plate 2, and the center of the flanges 1a, 1a on both sides so that the neutral axis of the steel pile 1 does not shift. The parts are symmetrically mounted around the neutral axis aa (see FIG. 4).
【００１４】図５および図６は、この発明に係る山留め
杭の他の実施例を示し、このうち図５は実施例１におい
て、また図６は実施例２において、それぞれ補強プレー
ト2,3 が根切りが深くなるにつれて、すなわち鋼杭１の
下方向に徐々に幅広となる三角形状に形成されている。FIGS. 5 and 6 show other embodiments of the pile retaining pile according to the present invention, in which FIG. 5 shows the embodiment 1 and FIG. 6 shows the embodiment 2 in which the reinforcing plates 2 and 3 are respectively provided. It is formed in a triangular shape that gradually widens as the root cut becomes deeper, that is, in the downward direction of the steel pile 1.
【００１５】補強プレート２と３をこのように形成する
ことにより、曲げ応力の大きさに応じて鋼杭１の断面を
徐々に変えることができるので、鋼材の無駄を無くして
経済設計および軽量化が図れる。By forming the reinforcing plates 2 and 3 in this manner, the cross section of the steel pile 1 can be gradually changed in accordance with the magnitude of the bending stress. Can be achieved.
【００１６】なお、補強プレート２および３の斜辺2a,3
a を凸曲線又は凹曲線状に形成することにより意匠的効
果を高めることもできる。The hypotenuses 2a, 3 of the reinforcing plates 2 and 3
By forming a into a convex curve or a concave curve, the design effect can be enhanced.
【００１７】[0017]
【発明の効果】この発明に係る山止め杭は、以上説明し
た構成からなるので、以下に記載するような効果を有す
る。Since the pile retaining pile according to the present invention has the above-described configuration, it has the following effects.
【００１８】鋼杭には、比較的根切りが浅く、小さい土
圧による曲げ応力を設計曲げ応力として決められた、可
能な限り小径のＨ形鋼が使用され、根切りが深く土圧に
よる曲げ応力の大きくなる部分は、フランジの左右縁端
部又はフランジの中央部に補強プレートを取り付けるこ
とにより土圧に対する曲げ耐力が高められているため、
材料に無駄がなくきわめて経済的であり、また軽量化が
図れる。For the steel pile, an H-section steel having a relatively small depth and a bending stress due to a small earth pressure determined as a design bending stress is used as small as possible, and the root is deeply bent by the earth pressure. Because the part where the stress increases, the bending strength against earth pressure is increased by attaching a reinforcing plate to the left and right edge of the flange or the center of the flange,
The material is very economical with no waste, and the weight can be reduced.
【００１９】また、補強プレートが深くなるに伴って徐
々に幅広となるように形成されていることにより、曲げ
応力の大きさに変化に応じて鋼杭の断面を徐々に変更で
きるので、鋼材の無駄を無くして経済設計および軽量化
が図れる。Further, since the reinforcing plate is formed so as to become gradually wider as it becomes deeper, the cross section of the steel pile can be gradually changed according to the change in the magnitude of the bending stress. Economical design and weight reduction can be achieved without waste.
【００２０】さらに、補強プレートが下方向に徐々に幅
広となる三角形状に形成されていることにより、地盤中
に設置された山止め杭を引き抜く際に、補強プレートの
摩擦が低減されて比較的容易に山止め杭を引き抜くこと
ができる。Further, since the reinforcing plate is formed in a triangular shape that gradually widens downward, the friction of the reinforcing plate is reduced when pulling out the stake pile installed in the ground, so that the reinforcing plate is relatively formed. The pier can be easily pulled out.
【図１】この発明に係る山留め杭の一実施例を示す斜視
図である。FIG. 1 is a perspective view showing an embodiment of a mountain retaining pile according to the present invention.
【図２】図１に示す山留め杭の横断面図である。FIG. 2 is a cross-sectional view of the mountain retaining pile shown in FIG.
【図３】この発明に係る山留め杭の一実施例を示す斜視
図である。FIG. 3 is a perspective view showing an embodiment of a mountain retaining pile according to the present invention.
【図４】図３に示す山留め杭の横断面図である。FIG. 4 is a cross-sectional view of the mountain retaining pile shown in FIG.
【図５】この発明に係る山留め杭の一実施例を示す正面
図である。FIG. 5 is a front view showing an embodiment of a mountain retaining pile according to the present invention.
【図６】この発明に係る山留め杭の一実施例を示す正面
図である。FIG. 6 is a front view showing an embodiment of a mountain retaining pile according to the present invention.
【符号の説明】 １…鋼杭、2,3 …補強プレート。[Explanation of symbols] 1 ... Steel pile, 2,3 ... Reinforcement plate
Claims (3)
端部に土圧に対する曲げ強度を高める補強プレートを突
設し、かつこの補強プレートを前記鋼杭の下方向に徐々
に幅広となるように形成してなることを特徴とする山留
め杭。1. A reinforcing plate for increasing a bending strength against earth pressure is projected from right and left edges of a flange of a steel pile made of an H-shaped steel, and the reinforcing plate is gradually widened in a downward direction of the steel pile. A mountain retaining pile characterized by being formed in such a manner.
に土圧に対する曲げ強度を高める補強プレートを前記鋼
杭のウェブと同一平面上に一致させて突設し、かつこの
補強プレートを前記鋼杭の下方向に徐々に幅広となるよ
うに形成してなることを特徴とする山留め杭。2. A reinforcing plate for enhancing bending strength against earth pressure is provided at the center of a flange of a steel pile made of H-section steel so as to be flush with the web of the steel pile, and this reinforcing plate is attached to the web. A mountain retaining pile formed so as to gradually widen in a downward direction of the steel pile.
ことを特徴とする請求項第１項又は第２項記載の山留め
杭。3. The retaining stake according to claim 1, wherein the reinforcing plate is formed in a triangular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4196999A JP2637335B2 (en) | 1992-07-23 | 1992-07-23 | Mountain retaining pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4196999A JP2637335B2 (en) | 1992-07-23 | 1992-07-23 | Mountain retaining pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0641954A JPH0641954A (en) | 1994-02-15 |
| JP2637335B2 true JP2637335B2 (en) | 1997-08-06 |
Family
ID=16367140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4196999A Expired - Fee Related JP2637335B2 (en) | 1992-07-23 | 1992-07-23 | Mountain retaining pile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2637335B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6466236B2 (en) * | 2015-04-20 | 2019-02-06 | 鹿島建設株式会社 | H steel pile and its placing method, and steel pipe pile placing method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0351364Y2 (en) * | 1985-07-15 | 1991-11-05 |
-
1992
- 1992-07-23 JP JP4196999A patent/JP2637335B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0641954A (en) | 1994-02-15 |
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