JP2530160Y2 - Pile for rotary burial method with pre-boring - Google Patents
Pile for rotary burial method with pre-boringInfo
- Publication number
- JP2530160Y2 JP2530160Y2 JP1994003974U JP397494U JP2530160Y2 JP 2530160 Y2 JP2530160 Y2 JP 2530160Y2 JP 1994003974 U JP1994003974 U JP 1994003974U JP 397494 U JP397494 U JP 397494U JP 2530160 Y2 JP2530160 Y2 JP 2530160Y2
- Authority
- JP
- Japan
- Prior art keywords
- pile
- boring
- closed
- ring
- streaks
- 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 - Lifetime
Links
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- Piles And Underground Anchors (AREA)
Description
【0001】[0001]
【産業上の利用分野】本考案は、根固め部に杭下端部分
を強固に定着させうるようになされたプレボーリング併
用回転埋設工法用の杭に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pile for a pre-boring combined rotary burial method, which is capable of firmly fixing a lower end portion of a pile to a foundation.
【0002】[0002]
【従来の技術】地盤に杭基礎を構築する工法の一つとし
て、プレボーリング併用の回転埋設工法が、振動や騒音
規制に対処できる工法として全国的に広く普及してきて
いる。2. Description of the Related Art As one of the construction methods for constructing a pile foundation on the ground, a rotary burying method combined with pre-boring has become widespread nationwide as a method capable of coping with vibration and noise regulations.
【0003】この工法の一例を説明すれば、まず図10
に示すごとく、掘削ロッドaの先端ヘッドbより掘削液
として水又はセメントミルクを噴出しながら施工地盤を
掘削し、攪拌翼cで土とセメントミルクとを混合する。
そして所定の深度に達した後、根固め溶液を注入して支
持層dを掘削し、杭挿入孔eを形成する。その後、掘削
ロッドaの上下運動を繰り返して支持層d中の砂礫とセ
メントミルクとを攪拌混合し、図11に示すごとく、コ
ンクリート状あるいはモルタル状の根固め部fを支持層
dに築造する。然る後図12に示すごとく、中空状杭g
をオーガーの回転キャップに吊り込みセットし、該杭を
軸芯回りに回転させながら埋設しあるいは該杭gを自重
沈設の後回転埋設し、図13に示すごとく、支持層dに
築造した根固め部fに杭下端部分hを定着させるもので
あった。[0003] An example of this method will be described first with reference to FIG.
As shown in (1), the construction ground is excavated while jetting water or cement milk as the excavating liquid from the tip head b of the excavation rod a, and the soil and the cement milk are mixed by the stirring blade c.
After reaching the predetermined depth, the support layer d is excavated by injecting the root consolidation solution to form the pile insertion hole e. Thereafter, the vertical movement of the excavation rod a is repeated to mix and mix the gravel and the cement milk in the support layer d, and as shown in FIG. 11, a concrete or mortar-like solidified portion f is built in the support layer d. Then, as shown in FIG.
Is suspended and set on a rotating cap of an auger, and the pile is embedded while rotating around the axis or the pile g is buried under its own weight and rotated and buried in the support layer d as shown in FIG. The lower end portion h of the pile was fixed to the portion f.
【0004】[0004]
【考案が解決しようとする課題】このようにして根固め
部fに定着された中空状杭においては、杭の下端部分
は、セメントミルクと砂礫とが混合されてなるコンクリ
ート状物あるいはセメントミルクと砂とが混合されてな
るモルタル状物(以下、このコンクリート状物とモルタ
ル状物を総称してコンクリート状物という)の硬化物に
よって一応閉塞された状態にあり、中空状杭の内外の周
面部と根固め部との間に作用する杭周面摩擦力及び杭下
端面部における支持力によって、杭に加わる荷重を支え
るものとなされていた。SUMMARY OF THE INVENTION In the hollow pile fixed in the rooting portion f in this way, the lower end of the pile is made of a concrete material or a mixture of cement milk and gravel. It is in a state of being temporarily closed by a hardened material of a mortar-like material (hereinafter, the concrete-like material and the mortar-like material are collectively referred to as a concrete-like material) in which sand is mixed. The load applied to the pile was supported by the frictional force acting on the pile surface acting between the pile and the consolidation part and the supporting force at the lower end face of the pile.
【0005】しかしながら、杭下端部分は前記のごとく
一応閉塞された状態にあるとはいうものの、単にコンク
リート状物の硬化物が蓋となっているに過ぎなかった。
そのため、該閉塞部と杭本体の内周面部との一体性に乏
しく、閉塞部が杭本体と分離しやすかった。又閉塞部
は、単なるコンクリートの硬化物に過ぎず強度が低かっ
たために、クラックも入りやすかった。このようなこと
から、該閉塞に伴う杭支持力の増大はほとんど期待でき
なかった。従って、根固め部への杭下端部の定着を強固
なものとなし難く、杭が要求荷重を充分に支持できない
おそれがあった。However, although the lower end of the pile is in a closed state as described above, it is merely a hardened concrete-like material serving as a lid.
For this reason, the closed portion and the inner peripheral surface of the pile main body are poorly integrated, and the closed portion is easily separated from the pile main body. Further, the closed portion was merely a hardened concrete product and had low strength, so that cracks were easily formed. For this reason, it was hardly expected that the pile supporting capacity would increase due to the blockage. Therefore, it is difficult to firmly fix the lower end portion of the pile to the root compaction portion, and the pile may not be able to sufficiently support the required load.
【0006】本考案は、杭下端部分と一体化した鋼材補
強のコンクリートあるいはモルタルの閉塞部により、杭
下端部分が根固め部において閉塞されるようになすこと
を基本として、杭下端部分の根固め部への定着をより強
固ならしめ、杭下端面部の全体で杭が要求荷重を充分に
支持するようになし、これによって前記問題点を解決可
能とするプレボーリング併用回転埋設工法用の杭の提供
を目的とするものである。The present invention is based on the fact that the lower end portion of the pile is closed at the root fixing portion by the steel-reinforced concrete or mortar closing portion integrated with the lower end portion of the pile. To provide a pile for the rotary burial method with pre-boring that can solve the above-mentioned problems by making the anchoring to the part more firm and making the pile sufficiently support the required load on the entire lower end face of the pile. It is intended for.
【0007】[0007]
【課題を解決するための手段】上記課題を解決するため
本考案は以下の手段を採用する。本考案に係るプレボー
リング併用回転埋設工法用の杭(以下杭という)1は、
上下端が開口した中空状をなす杭の下端開口縁部分3
に、閉塞鋼材部5を、それが杭の中空部内に突出するご
とくに設けてなる。そして該閉塞鋼材部5は、コンクリ
ート状物やモルタル状物を杭の中空部内に流入させるた
めの開口部を有することを特徴とするものである。In order to solve the above problems, the present invention employs the following means. The pile (hereinafter referred to as a pile) 1 for the pre-boring combined rotary burial method according to the present invention is:
Lower end opening edge part 3 of hollow pile with open upper and lower ends
In addition, the closed steel part 5 is provided so that it protrudes into the hollow part of the pile. The closed steel part 5 has an opening through which a concrete-like material or a mortar-like material flows into the hollow portion of the pile.
【0008】前記閉塞鋼材部5の具体的構成は、杭下端
に固定された鋼製のプレート6に下端部が溶接されかつ
杭の中空部内において杭内周面部と所要距離を隔てるご
とく上方に突出する縦筋9の、所要間隔を隔てて設けら
れた3本以上の所要数と;この縦筋相互を少なくともそ
の上端寄り部位及び下端寄り部位において溶接により連
結する環状のリング筋10と;を組合せ一体化してな
り、該閉塞鋼材部5の中央の開口部が、コンクリート状
物やモルタル状物を杭の中空部内に流入させるものを挙
げることができる。前記リング筋10の一例としては、
自由状態において一定の重なり代を有しており、この重
なり代を増大させあるいは減少させることによってリン
グ筋の径が調節可能となされているものを挙げることが
できる。 The concrete structure of the closed steel part 5 is as follows. The lower end is welded to a steel plate 6 fixed to the lower end of the pile, and projects upward at a predetermined distance from the inner peripheral surface of the pile in the hollow part of the pile. A required number of three or more vertical streaks 9 provided at required intervals; and an annular ring streak 10 connecting the vertical streaks to each other by welding at least at a portion near the upper end and a portion near the lower end thereof. An example is one in which the central opening of the closed steel part 5 allows the concrete or mortar to flow into the hollow part of the pile. As an example of the ring streaks 10,
One example is the one in which a certain overlap margin is provided in a free state, and the diameter of the ring streak is adjustable by increasing or decreasing the overlap margin.
【0009】[0009]
【作用】然して、本考案に係る杭1を回転埋設して杭下
端部分を根固め部に定着させるには、例えば図10に示
す従来工法によって施工地盤を掘削し、下端部分が支持
層中に存する杭挿入孔2を形成する。然る後、図11に
示す場合と同様、掘削ロッドの上下運動を繰り返して支
持層中の砂や砂礫とセメントミルクとを攪拌混合し、コ
ンクリート状あるいはモルタル状の根固め部33を支持
層34に築造する。In order to fix the lower end of the pile 1 to the foundation by rotating and embedding the pile 1 according to the present invention, for example, the construction ground is excavated by the conventional method shown in FIG. The existing pile insertion hole 2 is formed. Thereafter, similarly to the case shown in FIG. 11, the up and down movement of the drilling rod is repeated to mix and mix the sand or gravel in the support layer and the cement milk, and the concrete or mortar-like root consolidation section 33 is moved to the support layer 34. To build.
【0010】その後図12に示す場合と同様、杭1を軸
芯回りに回転させながら杭挿入孔2に埋設していく。そ
の際、閉塞鋼材部5は開口部(中央の開口部等、鉄筋間
の開口部)を具えるため、コンクリート状物はこの開口
部を通して杭の中空部23に順次流入する。そして杭下
端部32を根固め部33に定着させると、コンクリート
状物の硬化によって、該杭下端部分32は図9に示すご
とく、鋼材補強のコンクリートあるいはモルタルの閉塞
部35によって強固に閉塞された状態となる。Thereafter, as in the case shown in FIG. 12, the pile 1 is buried in the pile insertion hole 2 while being rotated around the axis. At this time, since the closed steel part 5 has an opening (an opening between the reinforcing bars such as a central opening), the concrete-like material sequentially flows into the hollow portion 23 of the pile through the opening. When the lower end portion 32 of the pile is fixed to the bolster 33, the lower end portion 32 of the pile is firmly closed by the closed portion 35 of steel-reinforced concrete or mortar as shown in FIG. State.
【0011】[0011]
【実施例】以下本考案の実施例を図面に基づいて説明す
る。図1〜2において本考案に係る杭1は、掘削液を注
入しながらプレボーリングを行うことによって施工地盤
に形成された杭挿入孔2内に、軸芯回りに回転せしめら
れつつ埋設される、上下端が開口した中空状をなす杭で
あって、その下端開口縁部分3には閉塞鋼材部5が固定
されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1 and FIG. 2, the pile 1 according to the present invention is embedded in a pile insertion hole 2 formed in the construction ground by performing pre-boring while injecting a drilling fluid while being rotated around an axis. It is a hollow pile with open upper and lower ends, and a closed steel part 5 is fixed to the lower end opening edge portion 3.
【0012】該閉塞鋼材部5は、杭の中空部内に突出す
るごとく設けられており、杭下端に固定された鋼製のプ
レート6に下端部7が溶接されて稍傾斜状態で上方に突
出する縦筋9の4本が、等角度ピッチで円形状に配置さ
れ、これら4本の縦筋9,9,9,9が、その上端寄り
部位及び下端寄り部位において、環状をなす上のリング
筋10a及び下のリング筋10bによって溶接により一
体化され、中央部分が開口した円筒かご状に形成されて
いる。なお、縦筋9及びリング筋10a,10bは、コ
ンクリートの付着強度を高めるために異形鉄筋を用いて
形成するのがよい。The closed steel portion 5 is provided so as to protrude into the hollow portion of the pile, and the lower end 7 is welded to a steel plate 6 fixed to the lower end of the pile, and protrudes upward in a slightly inclined state. Four of the vertical streaks 9 are arranged in a circular shape at an equal angular pitch, and these four vertical streaks 9, 9, 9, 9 are ring-shaped upper ring streaks at their upper and lower end portions. 10a and a lower ring streak 10b are integrated by welding and formed in a cylindrical cage shape with an open central portion. The vertical bars 9 and the ring bars 10a and 10b are preferably formed using deformed reinforcing bars in order to increase the adhesive strength of the concrete.
【0013】このような構成を有する閉塞鋼材部5の形
成は、図3に示すごとき円筒かご状をなすかご鉄筋12
を形成した後、このかご鉄筋12を前記プレート6に溶
接により固定して行うのがよい。The closed steel part 5 having such a structure is formed by a cage steel reinforcing bar 12 having a cylindrical cage shape as shown in FIG.
After the formation, the cage reinforcing bar 12 is preferably fixed to the plate 6 by welding.
【0014】該かご鉄筋12の製作要領の一例を説明す
れば、まず、円形状に配置された縦筋9,9,9,9の
下端寄り部位においてのみ縦筋9を取囲むように下のリ
ング筋10bを溶接した図4に示すごとき半完成のかご
鉄筋15を形成する。その後これを図5に示すごとく杭
の下端開口縁部分3に仮取付けし、縦筋9の上端寄り部
位に溶接されるべき上のリング筋10aの外周部19と
杭内周面部17との間に例えば3cm程度の隙間gが生ず
るように、該上のリング筋10aの径を定める。然る
後、該半完成のかご鉄筋15を杭の下端開口縁部分3か
ら一旦取り外し、所要径に設定された上のリング筋10
aを、縦筋9の上端寄り部位において該縦筋を取り囲む
ごとく溶接により固定し、これによって、図3に示すご
とき円筒状をなすかご鉄筋12とする。これらの溶接作
業は、施工現場においてあるいは工場において行われ
る。特に本実施例においては、該かご鉄筋12の各縦筋
9の下端部に、杭下端のプレート6に通常固定される台
形板状をなす杭誘導用の爪金具20を一体に溶接してお
り、かご鉄筋12がプレート6に固定されると同時に該
爪金具20もプレート6に固定される。An example of the procedure for manufacturing the car reinforcing bar 12 will be described. First, the lower reinforcing bar 9 is arranged so as to surround the vertical reinforcing bar 9 only at a position near the lower end of the circular vertical reinforcing bars 9, 9, 9, 9. A semi-finished car reinforcing bar 15 as shown in FIG. 4 where the ring bar 10b is welded is formed. Thereafter, as shown in FIG. 5, this is temporarily attached to the lower end opening edge portion 3 of the pile, and between the outer peripheral portion 19 of the upper ring streak 10a to be welded to the portion near the upper end of the vertical streak 9 and the inner peripheral surface portion 17 of the pile. The diameter of the upper ring streak 10a is determined so that a gap g of, for example, about 3 cm is generated. After that, the semi-finished car reinforcing bar 15 is temporarily removed from the lower end opening edge portion 3 of the pile, and the upper ring bar 10 set to a required diameter is removed.
"a" is fixed by welding so as to surround the vertical streak at a portion near the upper end of the vertical streak 9, thereby forming a cage iron bar 12 having a cylindrical shape as shown in FIG. These welding operations are performed at a construction site or at a factory. In particular, in this embodiment, a trapezoidal plate-shaped claw fitting 20 for trapezoidal plate, which is usually fixed to the plate 6 at the lower end of the pile, is integrally welded to the lower end of each longitudinal bar 9 of the car reinforcing bar 12. At the same time, the cage rebar 12 is fixed to the plate 6 and the claw fitting 20 is also fixed to the plate 6.
【0015】図6〜8はかご鉄筋12の他の態様を示す
ものであり、共に、縦筋の下端部には前記した爪金具2
0が固定されておらず、プレート6に溶接された爪金具
20,20間において縦筋9の下端部7がプレート6に
溶接されるごとくなされている。又図7に示す上のリン
グ筋10aや図8に示す上下のリング筋10a,10b
は、自由状態において一定の重なり代21を有してお
り、この重なり代を増大させあるいは減少させることに
よってリング筋の径が調節可能となされている。なお、
以上例示したかご鉄筋においては、上下のリング筋10
a,10bが縦筋9を取り囲んでいるが、リング筋10
a,10bは各縦筋9の内側に取付けられることもあ
る。FIGS. 6 to 8 show another embodiment of the cage bar 12, and the claw fitting 2 is provided at the lower end of the vertical bar.
0 is not fixed, and the lower end 7 of the vertical streak 9 is welded to the plate 6 between the claw fittings 20 welded to the plate 6. The upper ring streaks 10a shown in FIG. 7 and the upper and lower ring streaks 10a and 10b shown in FIG.
Has a certain overlap margin 21 in the free state, and the diameter of the ring streaks can be adjusted by increasing or decreasing this overlap margin. In addition,
In the cage steel bar exemplified above, the upper and lower ring bars 10
a, 10b surround the vertical streaks 9;
a and 10b may be attached inside each vertical streak 9.
【0016】このように製作したかご鉄筋12を用いて
なる閉塞鋼材部5にあっては、杭が回転埋設される際、
コンクリート状物が、図9に示すごとく、閉塞鋼材部5
の中央の開口部22あるいは鉄筋間の開口部を通して杭
の中空部23内に流入可能(流入状態を矢印で示す)で
ある。In the closed steel part 5 using the cage steel bar 12 manufactured as described above, when the pile is rotatably buried,
As shown in FIG. 9, the concrete-like material
Can flow into the hollow portion 23 of the pile through the central opening 22 or the opening between the reinforcing bars (the inflow state is indicated by an arrow).
【0017】[0017]
【考案の効果】本考案に係る杭は、開口部が形成されて
なる閉塞鋼材部を杭の下端開口縁部分に設ける構成を採
用しているため、以下のごとき優れた効果を奏する。 該杭を、プレボーリングによって形成された杭挿入
孔に回転埋設する場合、コンクリート状物(セメントミ
ルクと砂礫とが混合されてなるコンクリート状物、セメ
ントミルクと砂とが混合されてなるモルタル状物)が、
閉塞鋼材部の開口部を通して杭の中空部内に円滑に流入
する。このようなことから本考案の杭は、従来の中空状
の杭と同様にして回転埋設することができる。Advantageous Effects of the Invention The pile according to the present invention has the following excellent effects because it employs a structure in which the closed steel portion having an opening is provided at the opening edge of the lower end of the pile. When the pile is rotatably buried in a pile insertion hole formed by pre-boring, a concrete-like material (a concrete-like material obtained by mixing cement milk and gravel, a mortar-like material obtained by mixing cement milk and sand) )But,
It flows smoothly into the hollow part of the pile through the opening of the closed steel part. For this reason, the pile of the present invention can be buried in the same manner as a conventional hollow pile.
【0018】 そして杭下端部分が根固め部に定着さ
れた状態においては、該杭下端部分を、それと一体化し
た鋼材補強のコンクリートあるいはモルタルの閉塞部に
よって閉塞された状態となし得る。従って、あたかも下
端閉塞の既製閉塞杭を埋設した場合のごとく、杭下端部
分を強固に閉塞された状態となし得る。それ故、杭下端
部分の根固め部への定着を従来の中空状杭における場合
よりも一層強固なものとでき、杭下端面部の全体で、要
求される荷重を杭に安定的に支持させうることとなっ
て、信頼性の高い杭打ち基礎の構築が可能となる。In a state where the lower end of the pile is fixed to the foundation, the lower end of the pile can be closed by a steel-reinforced concrete or mortar closing portion integrated therewith. Therefore, the lower end portion of the pile can be firmly closed, as if a pre-built closed pile having a lower end closed was buried. Therefore, the lower end of the pile can be more firmly fixed to the reinforced portion than in the case of the conventional hollow pile, and the required load can be stably supported by the pile in the entire lower end face of the pile. In other words, a highly reliable pile driving foundation can be constructed.
【図1】本考案に係る杭をその埋設状態において示す正
面図である。FIG. 1 is a front view showing a pile according to the present invention in an embedded state.
【図2】杭の下端に閉塞鋼材部を固定した状態を示す斜
視図である。FIG. 2 is a perspective view showing a state in which a closed steel member is fixed to a lower end of a pile.
【図3】閉塞鋼材部の形成要領を説明する斜視図であ
る。FIG. 3 is a perspective view illustrating a procedure for forming a closed steel part.
【図4】半完成のかご鉄筋を示す斜視図である。FIG. 4 is a perspective view showing a semi-finished car rebar.
【図5】半完成のかご鉄筋を杭の下端開口縁部分に仮取
付けした状態を示す断面図である。FIG. 5 is a cross-sectional view showing a state in which a semi-finished car reinforcing bar is temporarily attached to an opening edge portion of a lower end of a pile.
【図6】閉塞鋼材部を形成するかご鉄筋の他の例を、杭
下端に溶接した状態において示す斜視図である。FIG. 6 is a perspective view showing another example of the cage rebar forming the closed steel part, which is welded to the lower end of the pile.
【図7】かご鉄筋の他の例を示す斜視図である。FIG. 7 is a perspective view showing another example of a car reinforcing bar.
【図8】かご鉄筋の他の例を示す斜視図である。FIG. 8 is a perspective view showing another example of a car reinforcing bar.
【図9】杭下端部分が鋼材補強のコンクリート閉塞部に
よって閉塞された状態を示す断面図である。FIG. 9 is a cross-sectional view showing a state in which a lower end portion of the pile is closed by a steel material-reinforced concrete closing portion.
【図10】地盤に杭挿入孔を形成する工程を説明する説
明図である。FIG. 10 is an explanatory diagram illustrating a step of forming a pile insertion hole in the ground.
【図11】杭挿入孔下端の支持層に根固め部を築造する
工程を説明する説明図である。FIG. 11 is an explanatory diagram for explaining a step of constructing a rooted portion in a support layer at a lower end of a pile insertion hole.
【図12】杭挿入孔に杭を埋設する工程を説明する説明
図である。FIG. 12 is an explanatory diagram illustrating a process of embedding a pile in a pile insertion hole.
【図13】根固め部に杭下端部分を定着させた状態を説
明する説明図である。FIG. 13 is an explanatory diagram illustrating a state in which a lower end portion of a pile is fixed to a root compaction portion.
1 杭 2 杭挿入孔 3 杭の下端開口縁部分 5 閉塞鋼材部 6 プレート 9 縦筋 10 リング筋 Reference Signs List 1 pile 2 pile insertion hole 3 lower edge opening edge of pile 5 closed steel part 6 plate 9 longitudinal streak 10 ring streak
Claims (2)
開口縁部分(3)に、閉塞鋼材部(5)を、それが杭の
中空部内に突出するごとくに設けてなり、前記閉塞鋼材
部(5)は、杭下端に固定された鋼製のプレート(6)
に下端部が溶接されかつ杭の中空部内において杭内周面
部と所要距離を隔てるごとく上方に突出する縦筋(9)
の、所要間隔を隔てて設けられた3本以上の所要数と,
この縦筋相互を少なくともその上端寄り部位及び下端寄
り部位において溶接により連結する環状のリング筋(1
0)と,を組合せ一体化してなり、該閉塞鋼材部(5)
の中央の開口部は、コンクリート状物やモルタル状物を
杭の中空部内に流入させるものとなされていることを特
徴とするプレボーリング併用回転埋設工法用の杭。To 1. A lower end opening edge portion of the pile forming a hollow that upper and lower ends are open (3), closed steel section (5), it is provided as to protrude into the hollow portion of the pile, the closure Steel
Part (5) is a steel plate (6) fixed to the lower end of the pile
The lower end is welded to the inside of the pile.
Longitudinal streaks protruding upward to separate the required distance from the part (9)
The required number of three or more provided at required intervals,
The vertical streaks should be at least
Annular ring streak (1
0), and the integrated steel part (5)
The central opening of the concrete or mortar
A pile for a rotary burial method combined with pre-boring, wherein the pile is made to flow into a hollow portion of the pile.
一定の重なり代を有しており、この重なり代を増大させ
あるいは減少させることによってリング筋の径が調節可
能となされていることを特徴とする請求項1記載のプレ
ボーリング併用回転埋設工法用の杭。2. The ring muscle (10) is in a free state.
It has a certain overlap allowance and increases this overlap allowance
Or the diameter of the ring streaks can be adjusted by decreasing it
The pile according to claim 1, wherein the pile is used for a rotary burial method with pre-boring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1994003974U JP2530160Y2 (en) | 1994-03-23 | 1994-03-23 | Pile for rotary burial method with pre-boring |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1994003974U JP2530160Y2 (en) | 1994-03-23 | 1994-03-23 | Pile for rotary burial method with pre-boring |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0674632U JPH0674632U (en) | 1994-10-21 |
JP2530160Y2 true JP2530160Y2 (en) | 1997-03-26 |
Family
ID=18509911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1994003974U Expired - Lifetime JP2530160Y2 (en) | 1994-03-23 | 1994-03-23 | Pile for rotary burial method with pre-boring |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2530160Y2 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5833148U (en) * | 1981-08-21 | 1983-03-04 | 住友金属工業株式会社 | template |
JPS6040420A (en) * | 1983-12-22 | 1985-03-02 | Kajima Corp | Composite foundation pile |
-
1994
- 1994-03-23 JP JP1994003974U patent/JP2530160Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0674632U (en) | 1994-10-21 |
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Legal Events
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