JPH01142122A - Small-diameter steel tubular pile - Google Patents
Small-diameter steel tubular pileInfo
- Publication number
- JPH01142122A JPH01142122A JP29928287A JP29928287A JPH01142122A JP H01142122 A JPH01142122 A JP H01142122A JP 29928287 A JP29928287 A JP 29928287A JP 29928287 A JP29928287 A JP 29928287A JP H01142122 A JPH01142122 A JP H01142122A
- Authority
- JP
- Japan
- Prior art keywords
- pile
- small
- steel pipe
- construction
- spiral
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 33
- 239000010959 steel Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 description 25
- 239000004576 sand Substances 0.000 description 7
- 239000002689 soil Substances 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009933 burial Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は中低層住宅等の建築物あるいは小規模の構築
物等の施工において、沖積地盤等、軟弱地盤用の基礎と
して用いられ、無騒音、無振動で施工できるスパイラル
ウィング付の小口径鋼管杭に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] This invention is used as a foundation for soft ground such as alluvial ground in the construction of buildings such as medium- and low-rise residences or small-scale structures, and is noiseless, This relates to small-diameter steel pipe piles with spiral wings that can be constructed without vibration.
近年、中低層住宅等の建設場所として、地盤耐力が小さ
く、何らかの対策が必要とされる建設工事、住宅の密集
地で道路が狭隘で、建設資材の搬出入が難しい場所が増
えると同時に住民の苦情等で無騒音、無振動が要望され
るケースが多くなってきた。また、建設排土をできるだ
け少なくすることも重要となってきたが、従来これらを
十分満足する工法が見当たらない。In recent years, there has been an increase in the number of construction sites for medium- and low-rise housing, etc., where the ground has low bearing capacity and requires some kind of countermeasures, and where the roads are narrow in densely populated areas, making it difficult to transport construction materials. There are an increasing number of cases where noise-free and vibration-free products are requested due to complaints. It has also become important to minimize the amount of soil removed during construction, but no construction method has been found that fully satisfies these requirements.
無騒音、無振動工法としては穴を掘って、杭を差し込む
先掘り工法等が行われるが、これも土砂の搬出等で難し
くなってきている。また、杭材料的にもコンクリート抗
は重量が大きく、小規模工事には向かない、セメントス
ラリー等を利用した地盤改良杭も増えてきているが、本
質的な杭工法とはいえず、基礎コンクリートを含めた基
礎地業の費用が高く、そのために安易に流れて、家屋が
沈下したり、傾いたりの苦情が多（聞かれる。Noise-free and vibration-free construction methods include the pre-drilling method, which involves digging holes and inserting piles, but this is also becoming difficult due to the removal of earth and sand. In addition, in terms of pile materials, concrete piles are heavy and are not suitable for small-scale construction.Although ground improvement piles using cement slurry are increasing, they are not an essential pile construction method, and the foundation concrete The cost of basic land works, including land construction, is high, and as a result, there are many complaints about houses sinking or leaning as a result of the land being washed away easily.
一方、他の無騒音、無振動工法として、スパイラルウィ
ングを取り付けた杭を用いたものが種々開発されている
。On the other hand, various other noise-free and vibration-free construction methods using piles with spiral wings attached have been developed.
例えば、特公昭４９−１８９２２号公報、特開昭５１−
９４６１５号公報、特開昭５９−８５０２８号公報等に
は下端部にスパイラルウィングを設け、回転圧入できる
鋼管杭が開示されており、特開昭６２−２５６１２号公
報には先端のとがった杭で、後端部でのスクリューピッ
チを狭くしたものが開示されている。この他、特開昭５
７−６６２２５号公報にもらせん杭が開示されている。For example, Japanese Patent Publication No. 49-18922, Japanese Unexamined Patent Publication No. 51-
94615, Japanese Patent Application Laid-Open No. 59-85028, etc., disclose a steel pipe pile with a spiral wing at the lower end that can be rotated and press-fitted, and Japanese Patent Application Laid-Open No. 62-25612 discloses a steel pipe pile with a pointed tip. , has been disclosed in which the screw pitch at the rear end is narrowed. In addition, JP-A No. 5
No. 7-66225 also discloses a spiral pile.
また、特公昭５Ｂ−５８４９１号公報には送電線鉄塔等
の基礎として用いる地中杭として、径の異なる複数本の
同心円筒状の軸を嵌合連結するよう構成し、各軸の先端
に地表に向けて、順次径の大きくなるスクリューを設け
、回転圧入できるものが開示されており、実開昭６０−
１８１４３４号公報、実開昭６１−１５５４３０号等に
も、複数のスパイラルウィングを設けた杭が開示されて
いる。Furthermore, in Japanese Patent Publication No. 5B-58491, an underground pile used as the foundation of a power transmission line tower, etc. is constructed so that multiple concentric cylindrical shafts with different diameters are fitted and connected, and the tip of each shaft is attached to the ground surface. Toward this end, screws with progressively larger diameters were installed, and a screw that could be rotated and press-fitted was disclosed.
Piles provided with a plurality of spiral wings are also disclosed in Japanese Unexamined Patent Publication No. 181434 and Japanese Utility Model Application No. 155430/1983.
小規模建造物の場合は、設計上、杭１本当たりの許容耐
力が５〜１５を程度のものが、使い易いが、在来工法に
おける鋼管杭ではこのようなものが見当たらず、沖積地
盤等、軟弱地盤用の基礎として適するものがない。これ
は、在来技術が大型構造物の基礎技術からの派生的なも
のであり、小規模建造物を目的としたものがないからで
ある。In the case of small-scale buildings, it is easy to use piles with an allowable strength of 5 to 15 per pile due to the design, but such piles are not found in steel pipe piles used in conventional construction methods, and are used in alluvial ground etc. , there is no suitable foundation for soft ground. This is because the conventional technology is derived from the basic technology for large-scale structures, and there is no technology aimed at small-scale structures.
上述のスパイラルウィングを取り付けた杭にも一長一短
があり、特にスパイラルウィングを杭外周に連続的に設
けた場合、重量が太き（なり、また周囲の土砂との摩擦
が大きくなる他、排土が生ずるといった問題もある。The above-mentioned piles with spiral wings attached have both advantages and disadvantages. In particular, when spiral wings are installed continuously around the pile, the weight becomes thicker, the friction with the surrounding earth and sand increases, and soil removal becomes difficult. There are also problems that may occur.
この発明は上述のような問題点を解決することを目的と
し、特に中低層住宅等の建築物あるいは小規模の構築物
等の施工に適し、沖積地盤等の軟弱地盤用においても所
要の耐力が確保でき、かつ無騒音、無振動、さらに無排
土で施工できる小口径鋼管杭を提供することを目的とし
たものである。The purpose of this invention is to solve the above-mentioned problems, and it is particularly suitable for construction of buildings such as medium- and low-rise residences or small-scale structures, and ensures the required strength even on soft ground such as alluvial ground. The purpose of the present invention is to provide a small-diameter steel pipe pile that can be constructed without making noise, without vibration, and without soil removal.
この発明の小口径鋼管杭Ａは外径が１００〜２００ｍｍ
で、管厚３．２〜６．Ｏｎ＋＋＋の鋼管ｌの外面に、１
〜３ｍの間隔をおいて、鋼管１の外径の１．５〜２．５
倍の外径を有する１〜２巻のスパイラルウィング２を複
数、不連続的に溶着したものである。The small diameter steel pipe pile A of this invention has an outer diameter of 100 to 200 mm.
So, the tube thickness is 3.2 to 6. 1 on the outer surface of the On+++ steel pipe l
1.5 to 2.5 of the outer diameter of the steel pipe 1 at intervals of ~3 m
A plurality of spiral wings 2 having one or two turns each having twice the outer diameter are welded discontinuously.
上述のような構成により、杭としての性能はスパイラル
ウィング２の外径と同径の杭材とほぼ同じかそれ以上の
耐力が期待でき、抗Ａ本体は小径であることから、軽量
となる。また、抗Ａ１本の長さは、通常の場合６ｍ以内
とすることにより、さらに軽量化が図れ、施工機械もこ
れに対応して小型なものが利用できるので、狭隘な場所
での施工も可能となる。また、スパイラルウィング２を
連続させず、１〜３ｍの間隔で設けたことにより、土砂
が地上に排出されず、スパイラルウィング２と地盤内の
周囲の土砂との摩擦も少ないため、杭Ａに回転トルクを
与えることにより、無排土で簡単に施工することができ
る。With the above-mentioned configuration, the performance as a pile can be expected to have a yield strength that is approximately the same as or greater than that of a pile material having the same diameter as the outer diameter of the spiral wing 2, and since the resistor A main body has a small diameter, it is lightweight. In addition, by keeping the length of each anti-A wire within 6 m in normal cases, further weight reduction can be achieved, and construction machines can also be made smaller to accommodate this, making it possible to perform construction in narrow spaces. becomes. In addition, since the spiral wings 2 are not continuous and are placed at intervals of 1 to 3 m, the earth and sand are not discharged to the ground, and there is less friction between the spiral wings 2 and the surrounding earth and sand in the ground, so the pile A can rotate. By applying torque, it can be easily constructed without soil removal.
この発明の小口径鋼管杭Ａの抗耐力はスパイラルウィン
グ２の翼面積による土の支圧力と鋼管１本体と周囲土の
付着によるせん断力の和によって定まるものと考えられ
る。The yield strength of the small-diameter steel pipe pile A of the present invention is considered to be determined by the sum of the bearing force of the soil due to the wing area of the spiral wing 2 and the shear force due to the adhesion of the steel pipe 1 body to the surrounding soil.
ところで、第７図は小口径鋼管杭Ａの外周に取り付けた
スパイラルウィング２の間隔と極限荷重との関係を示し
たもので、スパイラルウィング２の間隔が３ｍ程度まで
は、極限荷重にあまり差が見られず、３ｍ以上では極限
荷重が小さくなる。By the way, Figure 7 shows the relationship between the distance between the spiral wings 2 attached to the outer periphery of the small-diameter steel pipe pile A and the ultimate load, and it shows that there is not much difference in the ultimate load until the distance between the spiral wings 2 is about 3 m. It cannot be seen, and the ultimate load becomes small at a distance of 3 m or more.
一方、スパイラルウィング２を連続的に密に設けた状態
から、スパイラルウィング２の間隔が１ｍ程度までは、
スパイラルウィング２と土砂との摩擦等から施工時に大
きなトルクを必要とし、使用鋼材量、製作の手間等が多
くなるという欠点がある。このようなことから、この発
明ではスパイラルウィング２の間隔を１〜３ｍと限定し
た。On the other hand, from a state in which the spiral wings 2 are arranged closely together to a state where the distance between the spiral wings 2 is approximately 1 m,
A disadvantage is that a large torque is required during construction due to friction between the spiral wing 2 and the earth and sand, and the amount of steel used and the effort required for manufacturing increase. For this reason, in the present invention, the interval between the spiral wings 2 is limited to 1 to 3 m.
また、従来の杭ではその先端を、Ｎ値３０以上の硬地盤
で支持させるのが普通であるが、この発明の杭Ａの場合
は、Ｎ値２０以下程度を目標としており、地業により杭
頭レベルを揃えることが可能となる。中低層住宅、小規
模構築物としては、１本当たり、５〜１５を程度の許容
耐力が得られれば、十分であり、この杭Ａの適用範囲は
広い。In addition, conventional piles usually have their tips supported by hard ground with an N value of 30 or more, but in the case of the pile A of this invention, the target is an N value of about 20 or less. It becomes possible to align the head level. For medium- and low-rise houses and small-scale structures, it is sufficient to obtain an allowable yield strength of about 5 to 15 per pile, and the range of application of this pile A is wide.
次に、図示した実施例について説明する。 Next, the illustrated embodiment will be described.
第１図はこの発明の小口径鋼管杭Ａの一実施例を示した
もので、第２図にはその先端部の構造を示しである。FIG. 1 shows an embodiment of a small-diameter steel pipe pile A of the present invention, and FIG. 2 shows the structure of its tip.
この実施例における小口径鋼管杭Ａは杭本体を、外径１
６５．２ｍｍで、管厚５．抛−１長さ５．０ｍの鋼構造
用鋼管１の３本継ぎとし、杭長を１５．０ｍとした。The small diameter steel pipe pile A in this example has an outer diameter of 1
65.2mm, pipe thickness 5.抛-1 was made of 3 joints of steel structural steel pipes 1 with a length of 5.0 m, and the pile length was 15.0 m.
また、スパイラルウィング２は外径３５０ｍ−１板厚６
、 Ｏｍａ＋、スパイラルピッチ１００−―としたの
ものを用い、鋼管１の外面に各１巻、２ｍ間隔で溶着し
た。また、抗Ａ先端には第２図に示すような掘削補助金
具３および支持金具４を取り付けである。In addition, the spiral wing 2 has an outer diameter of 350 m-1 and a plate thickness of 6
, Oma+, and a spiral pitch of 100--, one turn each was welded to the outer surface of the steel pipe 1 at intervals of 2 m. Further, an excavation assisting metal fitting 3 and a supporting metal fitting 4 as shown in FIG. 2 are attached to the tip of the anti-A.
掘削補助金具３はビットの役目をするもので、抗Ａの先
端外周部に複数斜めに取り付け、杭Ａの回転によるスパ
イラルウィング２の掘進を補助する。A plurality of excavation aids 3 serve as bits, and are attached diagonally to the outer periphery of the tip of the pile A to assist the spiral wing 2 in digging by rotation of the pile A.
また、台形状の支持金具４は杭Ａの先端中央部より、下
向きに突出し、抗Ａの埋設に先立ち、地盤面に貫入され
、杭Ａを鉛直に支持する際の安定性を高めることができ
る。In addition, the trapezoidal support fitting 4 protrudes downward from the center of the tip of the pile A, and is penetrated into the ground surface prior to burying the resistor A, thereby increasing stability when supporting the pile A vertically. .
第３図はこの発明のスパイラルウィング２付きの杭Ａを
施工するための杭打ち機の概要を示したものである。FIG. 3 shows an outline of a pile driver for constructing pile A with spiral wings 2 according to the present invention.
この杭打ち機は杭打ち機本体５から立ち上がるリーダー
６に沿って、油圧モーター７等が昇降し、油圧モーター
７に接続したキャップ８により杭Ａの頭部をつかむこと
ができる。油圧モーター７を作動させることにより、抗
Ａを回転させ、スパイラルウィング２および先端の掘削
補助金具３の作用で、抗Ａを地中に埋設して行くことが
できる。In this pile driver, a hydraulic motor 7 and the like move up and down along a leader 6 rising from a pile driver main body 5, and the head of the pile A can be gripped by a cap 8 connected to the hydraulic motor 7. By operating the hydraulic motor 7, the shaft A can be rotated, and the shaft A can be buried underground by the action of the spiral wing 2 and the excavation auxiliary fitting 3 at the tip.
第４図（ａ）〜（ｅ）は小口径鋼管杭Ａの施工手順を示
したもので、次のような手順で作業が行われる。FIGS. 4(a) to 4(e) show the construction procedure for the small diameter steel pipe pile A, and the work is carried out in the following steps.
■抗建て込み（第４図（ａ）） 杭Ａを吊り込んで、杭芯に合わせて抗Ａをセットする。■Reinforcement (Fig. 4 (a)) Suspend stake A and set resistance A to match the core of the pile.
■杭の固定（第４図（ｂ））
抗Ａ先端を杭芯ヘセント完了したら、抗体を先端の支持
金具４を利用して固定する。■ Fixation of the stake (Figure 4(b)) After the tip of the anti-A is inserted into the core of the pile, the antibody is fixed using the support fitting 4 at the tip.
■回転埋設（第４図（Ｃ））
杭Ａの鉛直性を確認したら、正転（右回転）を抗Ａに与
えて、スパイラルウィング２の掘進力で杭Ａを貫入する
。■Rotation Burial (Figure 4 (C)) After confirming the verticality of Pile A, apply normal rotation (clockwise rotation) to Anti-A, and use the digging force of Spiral Wing 2 to penetrate Pile A.
■継手部溶接（第４図（ｄ））
１本目を埋設したら２本目、３本目を順次、溶接または
ねじ継手等により、継ぎ足し、回転埋設して行く。■Joint welding (Fig. 4 (d)) After burying the first pipe, the second and third pipes are successively added by welding or threaded joints, etc., and rotated and buried.
■埋設完了（第４図（ｅ））
所定の深さまで達したら、オーガーを逆転（左回転）さ
せ、キャップ８を外して施工を完了する。■Completion of burial (Fig. 4 (e)) When the specified depth is reached, the auger is reversed (rotated counterclockwise), the cap 8 is removed, and the construction is completed.
なお、キャップ８には第４図（ｅ）に示すように切欠き
ｌＯがあり、これを抗Ａ頭部の突起１１と係合させて、
回転力を伝達している。Note that the cap 8 has a notch 10 as shown in FIG. 4(e), which is engaged with the protrusion 11 of the anti-A head.
It transmits rotational force.
第５図はこの発明のスパイラルウィング２を取り付けた
小口径鋼管杭と、比較例としてスパイラルウィングを取
り付けない杭について、荷重と沈下量との関係を調べ、
スパイラルウィング２の杭耐力に及ぼす影響を調べたも
のである。グラフから明らかなように、スパイラルウィ
ング２を取り付けた抗（Ａ＞はそれを付けない杭（Ｂ）
に比べ、最大耐力が２倍以上あり、この発明の抗Ａの優
れた性能を示している。施工した地盤は軟弱な沖積地盤
であり、従来の技術では所要の耐力を得るために、高゛
い工費を要したが、この発明の小口径鋼管杭により、そ
のような地盤での杭基礎の施工が簡単になり、工費の低
減およびドライエ法による工期短縮が図れる。Figure 5 shows the relationship between load and settlement of a small-diameter steel pipe pile equipped with the spiral wing 2 of the present invention and a pile without spiral wings as a comparative example.
This study investigated the influence of Spiral Wing 2 on the pile bearing capacity. As is clear from the graph, the pile with Spiral Wing 2 attached (A> is the pile without it (B)
The maximum yield strength is more than twice that of the anti-A material of the present invention, demonstrating the excellent performance of the anti-A material of the present invention. The ground on which the piles were constructed was soft alluvial ground, and conventional techniques required high construction costs to obtain the required bearing strength. However, the small diameter steel pipe piles of this invention make it possible to build pile foundations on such ground. Construction becomes easier, reducing construction costs and shortening the construction period using the dryer method.
第６図は杭Ａを複数本継ぎ足して行く場合の継手部の一
例を示したものである。すなわち、この例では上抗１ａ
上端に雄ねじ１２を上杭１ｂ下端に雌ねじ１３を形成し
たものである。抗Ａの埋設は上述のように回転トルクに
よって行われるため、ねじ式継手とすることにより、杭
Ａの回転で上下抗の接続も行え、施工時間の短縮が図れ
る。このねじ式の継手部は鋼管１の本体端部を転造塑性
加工したり、あるいは鉄板をプレス加工するなどして形
成することができる。なお、この発明では抗Ａの接続は
必ずしもねじ式の継手による必要はなく、溶接継手でも
よい。FIG. 6 shows an example of a joint section when a plurality of piles A are joined together. That is, in this example, the upper resistor 1a
A male thread 12 is formed at the upper end and a female thread 13 is formed at the lower end of the upper pile 1b. Since the burying of the resistor A is performed using rotational torque as described above, by using a screw type joint, the upper and lower resistors can be connected by rotating the pile A, and the construction time can be shortened. This threaded joint can be formed by subjecting the end of the main body of the steel pipe 1 to rolling plastic processing, or by press working an iron plate. In addition, in this invention, the connection of resistor A does not necessarily have to be a threaded joint, but may be a welded joint.
■ 小口径の杭で十分な耐力が期待でき、軽量化が図れ
、施工機械も小型のもので対処できるので、狭隘な場所
でも機材を搬入することができる。■ Small-diameter piles can be expected to have sufficient bearing strength, are lightweight, and can be carried out using small construction machinery, making it possible to transport equipment into narrow spaces.
■ 杭施工を回転トルクのみで行えるので、騒音、振動
公害がない。■ Pile construction can be performed using only rotating torque, so there is no noise or vibration pollution.
■ スパイラルウィングは連続しないので、地上に土砂
の排出がなく、抗体積分だけ周辺地盤が圧密されること
になり、地盤改良効果も期待できる。■ Since the spiral wing is not continuous, there is no discharge of earth and sand onto the ground, and the surrounding ground is consolidated by the antibody integral, which can be expected to have a ground improvement effect.
■ 杭耐力としては、スパイラルウィングにより、軟弱
な地盤でも所要の耐力が期待できるので、軟弱沖積地盤
でも杭の設計が容易となる。■ In terms of pile capacity, the spiral wing can be expected to provide the required capacity even on soft ground, making it easier to design piles even on soft alluvial ground.
０ スパイラルウィングを鋼管全体に連続的に設ける場
合と同程度の耐力が期待でき、かつスパイラルウィング
を不連続とした分、重量および材料の節減が図れ、溶接
等による組み立ても容易となる。0 It is expected that the same degree of yield strength as when spiral wings are provided continuously over the entire steel pipe can be expected, and since the spiral wings are discontinuous, weight and materials can be saved, and assembly by welding etc. is also easy.
■ 杭頭径は小口径鋼管杭本体のみであるから、地中梁
、布基礎の幅も小さく済み、土砂掘削量、コンクリート
量も少な（、経済的な施工が可能となる。■ Since the pile head diameter is only the small-diameter steel pipe pile body, the width of underground beams and cloth foundations can be small, and the amount of earth and sand excavation and concrete amount is also small (allowing economical construction.
第１図はこの発明の小口径鋼管杭の一実施例を示す正面
図、第２図は先端部の詳細を示す正面図、第３図は杭打
ち機の構造を示す側面図、第４図（ａ）〜（ｅ）は施工
手順を示す正面図、第５図は荷重と沈下量との関係から
スパイラルウィングの効果を示したグラフ、第６図は抗
継手部の構造の一例を示す正面図（左半分は断面図）、
第７図はスパイラルウィングの間隔と極限荷重との関係
を示すグラフである。
Ａ・・・杭、
ｌ・・・鋼管、２・・・スパイラルウィング、３・・・
掘削補助金具、４・・・支持金具、５・・・杭打ち機本
体、６・・・リーダー、７・・・油圧モーター、８・・
・キャンプ、９・・・杭振れ止め、１０・・・切欠き、
１１・・・突起、１２・・・雄ねじ、１３・・・雌ねじ
第１図
（ａ） （ｂ）
Ｑ−
（ａ） （ｂ）
第４図
（ｃ） （ｄ） （ｅ）第６
図
第７図Figure 1 is a front view showing an embodiment of a small diameter steel pipe pile of the present invention, Figure 2 is a front view showing details of the tip, Figure 3 is a side view showing the structure of the pile driver, and Figure 4. (a) to (e) are front views showing the construction procedure, Figure 5 is a graph showing the effect of the spiral wing in terms of the relationship between load and settlement amount, and Figure 6 is a front view showing an example of the structure of the resistive joint. Figure (left half is cross-sectional view),
FIG. 7 is a graph showing the relationship between the spacing of the spiral wings and the ultimate load. A...Pile, l...Steel pipe, 2...Spiral wing, 3...
Excavation auxiliary fitting, 4... Supporting fitting, 5... Pile driver body, 6... Leader, 7... Hydraulic motor, 8...
・Camping, 9... Pile rest, 10... Notch,
11...Protrusion, 12...Male thread, 13...Female thread Fig. 1 (a) (b) Q- (a) (b) Fig. 4 (c) (d) (e) No. 6
Figure 7
Claims (1)
０ｍｍの鋼管の外面に、１〜３ｍの間隔をおいて、鋼管
の外径の１．５〜２．５倍の外径を有する１〜２巻のス
パイラルウィングを複数、不連続的に溶着したことを特
徴とする小口径鋼管杭。(1) The outer diameter is 100 to 200 mm, and the pipe thickness is 3.2 to 6.
A plurality of spiral wings of 1 to 2 turns each having an outer diameter of 1.5 to 2.5 times the outer diameter of the steel pipe were discontinuously welded to the outer surface of a 0 mm steel pipe at intervals of 1 to 3 m. A small diameter steel pipe pile characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62299282A JP2592079B2 (en) | 1987-11-27 | 1987-11-27 | Small diameter steel pipe pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62299282A JP2592079B2 (en) | 1987-11-27 | 1987-11-27 | Small diameter steel pipe pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01142122A true JPH01142122A (en) | 1989-06-05 |
| JP2592079B2 JP2592079B2 (en) | 1997-03-19 |
Family
ID=17870524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62299282A Expired - Lifetime JP2592079B2 (en) | 1987-11-27 | 1987-11-27 | Small diameter steel pipe pile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2592079B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02255333A (en) * | 1989-03-30 | 1990-10-16 | Nippon Steel Corp | Deoxidation functional laminated body excellent in adhesive property and production thereof |
| JPH0318238U (en) * | 1989-07-05 | 1991-02-22 | ||
| JPH04185813A (en) * | 1990-11-20 | 1992-07-02 | Nippon Steel Corp | Formation of soil-cement composite pile |
| JP2001317050A (en) * | 2000-03-03 | 2001-11-16 | Asahi Kasei Corp | Forming method for soil cement composite pile |
| JP2005069537A (en) * | 2003-08-22 | 2005-03-17 | Asahi Kasei Homes Kk | Buried pipe for heat exchange |
| JP2010242466A (en) * | 2009-04-10 | 2010-10-28 | Nippon Steel Corp | Steel pipe pile, and construction method therefor |
| JP2010242465A (en) * | 2009-04-10 | 2010-10-28 | Nippon Steel Corp | Steel pipe pile and method for constructing the same |
| JP2011069071A (en) * | 2009-09-24 | 2011-04-07 | Ohbayashi Corp | Structure and method for coupling steel pipes for steel pipe pile |
| JP2011069072A (en) * | 2009-09-24 | 2011-04-07 | Ohbayashi Corp | Structure and method for coupling steel pipes for steel pipe pile |
| WO2015141639A1 (en) * | 2014-03-19 | 2015-09-24 | 旭化成建材株式会社 | Spiral shaped blade-equipped steel pipe pile, composite pile, and composite pile creation method |
| JPWO2021157699A1 (en) * | 2020-02-07 | 2021-08-12 | ||
| WO2023013563A1 (en) * | 2021-08-05 | 2023-02-09 | Ｊｆｅスチール株式会社 | Rotary penetration steel pipe pile and method for constructing rotary penetration steel pipe pile |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6225612A (en) * | 1985-07-26 | 1987-02-03 | Eijiro Kurahashi | Pile |
-
1987
- 1987-11-27 JP JP62299282A patent/JP2592079B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6225612A (en) * | 1985-07-26 | 1987-02-03 | Eijiro Kurahashi | Pile |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02255333A (en) * | 1989-03-30 | 1990-10-16 | Nippon Steel Corp | Deoxidation functional laminated body excellent in adhesive property and production thereof |
| JPH0318238U (en) * | 1989-07-05 | 1991-02-22 | ||
| JPH04185813A (en) * | 1990-11-20 | 1992-07-02 | Nippon Steel Corp | Formation of soil-cement composite pile |
| JP2001317050A (en) * | 2000-03-03 | 2001-11-16 | Asahi Kasei Corp | Forming method for soil cement composite pile |
| JP4626916B2 (en) * | 2000-03-03 | 2011-02-09 | 旭化成建材株式会社 | Construction method of soil cement composite pile |
| JP2005069537A (en) * | 2003-08-22 | 2005-03-17 | Asahi Kasei Homes Kk | Buried pipe for heat exchange |
| JP2010242466A (en) * | 2009-04-10 | 2010-10-28 | Nippon Steel Corp | Steel pipe pile, and construction method therefor |
| JP2010242465A (en) * | 2009-04-10 | 2010-10-28 | Nippon Steel Corp | Steel pipe pile and method for constructing the same |
| JP2011069071A (en) * | 2009-09-24 | 2011-04-07 | Ohbayashi Corp | Structure and method for coupling steel pipes for steel pipe pile |
| JP2011069072A (en) * | 2009-09-24 | 2011-04-07 | Ohbayashi Corp | Structure and method for coupling steel pipes for steel pipe pile |
| WO2015141639A1 (en) * | 2014-03-19 | 2015-09-24 | 旭化成建材株式会社 | Spiral shaped blade-equipped steel pipe pile, composite pile, and composite pile creation method |
| KR20160117524A (en) * | 2014-03-19 | 2016-10-10 | 아사히 가세이 겐자이 가부시키가이샤 | Spiral shaped blade-equipped steel pipe pile, composite pile, and composite pile creation method |
| EP3121339A4 (en) * | 2014-03-19 | 2017-03-15 | Asahi Kasei Construction Materials Corporation | Spiral shaped blade-equipped steel pipe pile, composite pile, and composite pile creation method |
| JPWO2015141639A1 (en) * | 2014-03-19 | 2017-04-13 | 旭化成建材株式会社 | Steel pipe pile with spiral blades, composite pile, and method for constructing composite pile |
| AU2015232566B2 (en) * | 2014-03-19 | 2017-10-19 | Asahi Kasei Construction Materials Corporation | Steel pipe pile with spiral blades, composite pile, and construction method of composite pile |
| US9945088B2 (en) | 2014-03-19 | 2018-04-17 | Asahi Kasei Construction Materials Corporation | Steel pipe pile with spiral blades, composite pile, and construction method of composite pile |
| JPWO2021157699A1 (en) * | 2020-02-07 | 2021-08-12 | ||
| WO2021157699A1 (en) | 2020-02-07 | 2021-08-12 | Ｊｆｅスチール株式会社 | Steel pipe pile |
| WO2023013563A1 (en) * | 2021-08-05 | 2023-02-09 | Ｊｆｅスチール株式会社 | Rotary penetration steel pipe pile and method for constructing rotary penetration steel pipe pile |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2592079B2 (en) | 1997-03-19 |
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