JPH0657943B2 - Construction method of screw-in pile - Google Patents

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は住宅その他比較的低層の建築物の基礎として
利用されるねじ込みぐいの施工法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a construction method of a screw-in pile which is used as a foundation of a house or a relatively low-rise building.

〔従来の技術〕 既製ぐいとしては木ぐいの他、大型の基礎に用いられる
ものとしては鋼管ぐいや遠心成形によるＲＣくい、外殻
コンクリート付コンクリートぐい（ＳＣくい）、ＰＲＣ
くいなどがあるが、木ぐいは腐りやすく、また強度的に
も弱いことなどから建物の基礎としては適さず、また鋼
管ぐい，ＲＣくい等は高価であり、また施工には大型の
設備が必要であることから、大径のものがほとんどで住
宅等の基礎としては用いられない。[Prior Art] In addition to wood piles as ready-made piles, steel pipe piles, RC piles made by centrifugal molding, concrete piles with outer shell concrete (SC piles), PRCs are used as large-scale foundations.
Although there are piles and the like, wooden piles are apt to decay and weak in strength, so they are not suitable as building foundations, and steel pipe piles, RC piles, etc. are expensive, and large equipment is required for construction. Therefore, most of them have a large diameter and cannot be used as the foundation of houses.

また、比較的小規模の建物の基礎として使用されている
ものにねじ込みぐいがあり、モーターを用いた簡単な回
転装置あるいは手動の工具により、無騒音無振動で比較
的容易にくいを施工することができる。このようなねじ
込みぐいとしては、遠心成形によらず竪型の型枠で螺旋
状のねじを形成した小径のＲＣくいや、先端シューに螺
旋状の刃を設け、くい本体に固定したもの等が知られて
いる。In addition, there is a screwing pile in the one used as the foundation of a relatively small building, and it is possible to construct a relatively easy and noise-free and vibration-free machine with a simple rotating device using a motor or a manual tool. it can. As such a screw-in pile, there are a small-diameter RC pile in which a spiral screw is formed by a vertical frame instead of centrifugal molding, or a spiral shoe provided on the tip shoe and fixed to the pile body. Are known.

〔発明が解決しようとする問題点〕[Problems to be solved by the invention]

ところで、成形や運搬，施工等の制約から複数本のくい
部材を長手方向に継ぎ足して使用する場合、比較的太径
のくいでは既製のくい部材端部に端板等の端部金物を設
け端部金物どうしを現場溶接するか、あるいは鋼管ぐい
では裏当てリングを介して直接端部どうしを溶接する方
法等がとられている。しかし、現場溶接は溶接工を必要
とし、また手間がかかり施工性が悪い。また、溶接不良
や溶接の仕方によつては接合部に欠陥が生じ、特にねじ
込みぐいでは施工時にくいにねじり力が作用するため、
接合部で破損する恐れもある。また鋼管ぐい等で、鋼管
の外面にねじを切るとすると、変形しやすく、接合しに
くくなる恐れがある。By the way, when a plurality of pile members are added in the longitudinal direction due to restrictions of molding, transportation, construction, etc., an end plate such as an end plate is provided on the end of a ready-made pile member with a relatively large diameter pile. For example, a method of welding the metal parts in-situ or a method of directly welding the end parts of the steel pipe pile through the backing ring is used. However, in-situ welding requires a welder, is laborious, and has poor workability. Also, due to poor welding or welding method, defects occur at the joint part, and especially with a screw-in pile, a twisting force acts hard during construction,
There is also a risk of damage at the joint. Further, if a thread is cut on the outer surface of the steel pipe with a steel pipe pile or the like, the steel pipe may be easily deformed, and the joining may be difficult.

この発明は上述のような事情に鑑み、特に住宅等の低層
建物の基礎に利用するねじ込みぐいを複数のくい部材を
順次接続しながら簡単に施工できる工法を提供すること
を目的としてなされたものである。In view of the above-mentioned circumstances, the present invention has been made with the object of providing a method of constructing a screw-in pile which is used for the foundation of a low-rise building such as a house, while easily connecting a plurality of pile members in order. is there.

〔問題点を解決するための手段〕[Means for solving problems]

この発明のねじ込みぐいの施工法では上面側にくい部材
11と連結するための雄ねじ部材４または雌ねじ部材５を
設けた先端シュー１と、円筒状の外殻12内にコンクリー
ト13を充填し、両端面に雄ねじ部材14または雌ねじ部材
15を設けたくい部材11を使用する。まず、先端シュー１
とくい部材11を上記ねじ部材を利用してねじ接合し、該
くい部材11を鉛直に支持した状態で回転させながら地盤
中にねじ込んで行く。続いて順次同様にくい部材11を１
または複数本ねじ接合して継足し、地盤中にねじ込んで
行く。このようにして、先端シュー１とくい部材11さら
にくい部材11どうしをねじ接合するとともに、通常のね
じ込みぐいと同様に地盤中にねじ込んで行くことにより
所要長さのくいが形成される。A member difficult to face on the upper side by the construction method of the screw-in pile of the present invention
A tip shoe 1 provided with a male screw member 4 or a female screw member 5 for connecting with 11, and concrete 13 is filled in a cylindrical outer shell 12, and both end faces are provided with a male screw member 14 or a female screw member.
The scooping member 11 provided with 15 is used. First, the tip shoe 1
The pile member 11 is screw-joined using the screw member, and the pile member 11 is screwed into the ground while being rotated while being supported vertically. Followed by the same difficult member 1
Alternatively, multiple screws can be joined and added together, and then screwed into the ground. In this way, the tip shoe 1 and the pile member 11 which are hard to be exposed are screw-joined to each other, and the pile is screwed into the ground in the same manner as a normal screw-in pile to form a pile having a required length.

〔実施例〕〔Example〕

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図はこの説明におけるくい部材11どうしおよび先端
シュー１との接合構造を示したもので、先端シュー１の
上面側に突出する雄ねじ部材４と下杭としてのくい部材
11下端の雌ねじ部材15を螺合させて接続し、さらに下杭
としてのくい部材11上端の雄ねじ部材14と上杭としての
くい部材11下端の雌ねじ部材15を螺合させて、順次接続
して行くことができる。FIG. 1 shows the joint structure between the pile members 11 and the tip shoe 1 in this description. The male screw member 4 protruding to the upper surface side of the tip shoe 1 and the pile member as the lower pile.
11 The female screw member 15 at the lower end is screwed and connected, and further the pile member 11 as the lower pile 11 and the male screw member 14 at the upper end and the pile member 11 as the upper pile 11 are screwed together, and the female screw member 15 at the lower end is screwed, and sequentially connected. can go.

先端シュー１は鋼製の外殻２内にコンクリート３を充填
し、雄ねじ部材４を突出させたもので、外殻２には複数
の刃７をねじ状に設けてある。すなわち、各刃７はくい
の回転方向に下り勾配となつている。The tip shoe 1 is obtained by filling concrete 3 in a steel outer shell 2 and projecting a male screw member 4. The outer shell 2 is provided with a plurality of blades 7 in a screw shape. That is, each blade 7 has a downward slope in the direction of rotation of the pile.

また、この例でくい部材11は鋼管等からなる外殻12内に
コンクリート13を充填し、下端に雌ねじ部材15を、上端
に雄ねじ部材14を埋め込んだもので、先端シュー１と接
続した後、さらに順次他のくい部材11を継ぎ足して行く
ことができる。Further, in this example, the pile member 11 is obtained by filling the outer shell 12 made of a steel pipe or the like with concrete 13, and embedding the female screw member 15 in the lower end and the male screw member 14 in the upper end. Further, the other pile members 11 can be sequentially added.

くい部材11の直径は１０〜２５cm、長さは通常２〜５ｍ
程度であるが、施工条件等に応じ、種々の径、長さのも
のを用意し、組み合わせて使用することもできる。The diameter of the pile member 11 is 10 to 25 cm, and the length is usually 2 to 5 m.
Depending on the construction conditions and the like, various diameters and lengths may be prepared and used in combination.

先端シュー１の外径はくい部材11の外径より大きめとす
ることにより、ねじ込み時の案内として、くい部材11の
貫入が容易となり、また先端支持力を増すことができ
る。By making the outer diameter of the tip shoe 1 larger than the outer diameter of the pile member 11, it becomes easy to penetrate the pile member 11 as a guide at the time of screwing, and the tip supporting force can be increased.

また、先端シュー１およびくい部材11のねじ部材のねじ
方向はくいの回転方向に合わせるべきであり、通常の右
ねじでかまわない。なお、くいの回転方向と逆向きのね
じとした場合、地盤中へのくいのねじ込みに際し、接続
部が緩むこととなり好ましくない。Further, the screw direction of the tip shoe 1 and the screw member of the pile member 11 should be matched with the rotating direction of the pile, and a normal right-hand screw may be used. If the screw is turned in the direction opposite to the direction of rotation of the pile, the connection portion becomes loose when the pile is screwed into the ground, which is not preferable.

第２図は第１図の場合と逆に、先端シュー１の上面側に
ねじ孔が開口する雌ねじ部材５を埋め込み、くい部材11
下端の雄ねじ部材14と螺合させて接続するようにしたも
のである。くい部材11自体は第１図と同じものを上下逆
に使用すればよい。In contrast to the case of FIG. 1, FIG. 2 embeds a female screw member 5 having a screw hole on the upper surface side of the tip shoe 1, and a piling member 11
The male screw member 14 at the lower end is screwed to be connected. The pile member 11 itself may be the same as that shown in FIG.

次に、この発明におけるくい部材11として第１実施例〜
第６実施例を、先端シュー１として第７実施例および第
８実施例を図面に基づいて説明する。Next, the first embodiment of the pile member 11 according to the present invention will be described.
A sixth embodiment will be described with reference to the drawings as a tip shoe 1 of a seventh embodiment and an eighth embodiment.

第１実施例（第３図(a),(b),(c)参照） 第１実施例は鋼管製の外殻12の一方端に支持金物16を介
して雄ねじ部材14を、他方端に支持金物16を介して雌ね
じ部材15を固定し、コンクリート13を上から充填したも
のである。コンクリート13の充填に際しては外殻12があ
るため、雌ねじ部材15上端を塞ぐ蓋17を取り付け、下端
のみ型枠を用意すればよい。雄ねじ部材14は通常のボル
トであり、例えば直径１０〜１５cm程度のくい部材11に
対し、直径２５〜４０mm程度のボルトを使用する。雌ね
じ部材15は円筒状に形成し、内面に前記雄ねじ部材14と
螺合する雌ねじを切つたものである。この実施例で支持
金物16はＭ字状断面を有し、両端を外殻12の内面に溶接
し、２つの支持金物16で雄ねじ部材14または雌ねじ部材
15を挾み込むようにして溶接してある。First Embodiment (See FIGS. 3 (a), (b), and (c)) In the first embodiment, a male screw member 14 is provided on one end of a steel pipe outer shell 12 via a support metal 16 and another end is provided on the other end. A female screw member 15 is fixed via a support metal 16, and concrete 13 is filled from above. Since there is the outer shell 12 when the concrete 13 is filled, the lid 17 that closes the upper end of the female screw member 15 may be attached and the formwork may be prepared only at the lower end. The male screw member 14 is a normal bolt, and for example, a bolt having a diameter of 25 to 40 mm is used for the pile member 11 having a diameter of 10 to 15 cm. The female screw member 15 is formed in a cylindrical shape, and the inner surface thereof is cut with a female screw to be screwed with the male screw member 14. In this embodiment, the supporting metal piece 16 has an M-shaped cross section, both ends are welded to the inner surface of the outer shell 12, and two supporting metal pieces 16 are used for the male screw member 14 or the female screw member.
Welded so that 15 is sandwiched.

第２実施例（第４図(a),(b)、第５図参照） 第２実施例は外殻12としてスパイラル鋼管を用い、その
断面中央長手方向に小径の鋼管パイプ18を配し、該鋼管
パイプ18の両端に雌ねじ部材15を溶接し、コンクリート
13を充填して埋め込むとともに、一方端の雌ねじ部材15
に雄ねじ部材14を螺合したものである。なお雄ねじ部材
14は現場でのくい部材11どうしの接合時に取り付けても
よい。鋼管パイプ18は両端部に複数のアンカー筋19が溶
接されており、このアンカー筋19はスペーサーの役目も
兼ねている。また、くい部材11の接合部における一方の
雌ねじ部材15には蓋20が溶接されており、ねじ接合に際
してのストツパーとなつている。Second Embodiment (See FIGS. 4 (a), (b) and FIG. 5) In the second embodiment, a spiral steel pipe is used as the outer shell 12, and a small diameter steel pipe 18 is arranged in the central longitudinal direction of the cross section. Female thread members 15 are welded to both ends of the steel pipe 18 to form concrete.
13 is filled and embedded, and the female screw member 15 at one end is also filled.
A male screw member (14) is screwed onto the. Male screw member
14 may be attached at the time of joining the pile members 11 on site. A plurality of anchor bars 19 are welded to both ends of the steel pipe 18, and the anchor bars 19 also serve as spacers. Further, a lid 20 is welded to one of the female screw members 15 in the joint portion of the pile member 11 to serve as a stopper at the time of screw joining.

第３実施例（第６図参照） 第３実施例は外殻12としてスパイラル鋼管を用い、充填
したコンクリート13中に両端にねじ部を有する異形棒鋼
21を芯材として配したものである。異形棒鋼21は外殻12
よりわずかに短いかほぼ等しい長さであり、上端のねじ
部を外殻12より突出させ、くい部材11接続のための雄ね
じ部材14とし、下端のねじ部に螺合させたカツプラーを
雌ねじ部材15としている。図中22はコンクリート13の充
填に際しての調整用のナツトである。Third Embodiment (see FIG. 6) In the third embodiment, a spiral steel pipe is used as the outer shell 12, and a deformed steel bar having screw portions at both ends in the filled concrete 13
21 is arranged as a core material. Deformed steel bar 21 is the outer shell 12
It has a slightly shorter length or an approximately equal length, and the threaded portion at the upper end is projected from the outer shell 12 to form a male screw member 14 for connecting the pile member 11, and the cutler screwed to the threaded portion at the lower end is a female screw member 15. I am trying. Reference numeral 22 in the figure is a nut for adjusting when the concrete 13 is filled.

第４実施例（第７図(a),(b),(c)参照） 第４実施例は外殻12として鋼管を用い、端部において十
字状に配した支持金物16によつて、雄ねじ部材14および
雌ねじ部材15を固定し、コンクリート13を充填したもの
である。Fourth Embodiment (See FIGS. 7 (a), (b), and (c)) In the fourth embodiment, a steel pipe is used as the outer shell 12, and a supporting metal member 16 arranged in a cross shape at the end portion is used to produce an external thread. The member 14 and the female screw member 15 are fixed and the concrete 13 is filled.

第５実施例（第８図(a),(b),(c)参照） 第５実施例は雄ねじ部材14として異形ねじ棒鋼を使用し
たもので、他端の雌ねじ部材15としては、これと螺合す
る六角ナツトを埋め込んである。雄ねじ部材14は２枚の
支持金物16とスペーサー23としての２本の鉄筋によつて
固定され、コンクリート13中に埋め込まれている。雌ね
じ部材15は鋼管製の外殻12の一端に溶接した端板24に溶
接されており、上端にはコンクリート13の侵入を防ぐた
めの蓋17が取り付けられている。寸法の一例を上げると
くい部材11の外径が１４０mm、雄ねじ部材14はＤ３５、
長さ５００mmの異形ねじ鉄筋である。Fifth Embodiment (See FIGS. 8 (a), (b), and (c)) In the fifth embodiment, a deformed threaded steel bar is used as the male screw member 14, and the female screw member 15 at the other end is Hexagon nuts to be screwed are embedded. The male screw member 14 is fixed by two supporting metal pieces 16 and two reinforcing bars as a spacer 23, and is embedded in the concrete 13. The female screw member 15 is welded to an end plate 24 welded to one end of an outer shell 12 made of steel pipe, and a lid 17 for preventing intrusion of concrete 13 is attached to the upper end. As an example of dimensions, the outer diameter of the pile member 11 is 140 mm, the male screw member 14 is D35,
It is a deformed screw rebar with a length of 500 mm.

第６実施例（第９図(a),(b)参照） 第６実施例は上記第５実施例とほぼ同様な構成となつて
おり、雄ねじ部材14の固定を鉄筋からなるスペーサー2
5,26によつて行なつている。このうち、一方向のスペー
サー26は外殻12を貫通している。Sixth Embodiment (Refer to FIGS. 9 (a) and 9 (b)) The sixth embodiment has substantially the same structure as the fifth embodiment, and the male screw member 14 is fixed by a spacer 2 made of a reinforcing bar.
It is operated by 5,26. Of these, the unidirectional spacer 26 penetrates the outer shell 12.

第７実施例（第１０図(a),(b),(c)参照） 第７実施例は前述の第１図の先端シュー１に対応するも
ので、先端が尖り、下向きの円錐状の外形をなす外殻２
内に雌ねじ部材５をその上面が先端シュー１の上面とほ
ぼ一致するようにしてアンカー筋６で固定し、コンクリ
ート３を充填したもので、雌ねじ部材５に螺合させた雄
ねじ部材４を上面側に突出させてある。アンカー筋６と
外殻２内面およびアンカー筋６と雌ねじ部材５の外面は
溶接されている。雄ねじ部材４は後から螺合させること
もできるが、あらかじめ、雌ねじ部材と溶接しておけ
ば、くい部材との接合に際し、ねじが緩まずに済む。な
お、スペーサー等により雄ねじ部材を直接、コンクリー
ト３中に埋め込んでもよい。Seventh Embodiment (see FIGS. 10 (a), (b), and (c)) The seventh embodiment corresponds to the tip shoe 1 of FIG. 1 described above, and has a sharp tip and a downward conical shape. Outer shell 2
A female screw member 5 is fixed in the inside with anchor bars 6 so that the upper surface of the male screw member 5 is substantially flush with the upper surface of the tip shoe 1 and is filled with concrete 3. The male screw member 4 screwed to the female screw member 5 is on the upper surface side. It is projected to. The anchor muscles 6 and the inner surface of the outer shell 2 and the anchor muscles 6 and the outer surface of the female screw member 5 are welded. The male screw member 4 can be screwed later, but if the male screw member 4 is welded to the female screw member in advance, the screw will not be loosened when it is joined to the pile member. The male screw member may be directly embedded in the concrete 3 with a spacer or the like.

外殻２の外面に設けた複数の刃７はねじ状に取り付けら
れたもので、溶接により固定されている。この刃７によ
り施工時はくい本体を回転させることにより、地盤中に
ねじ込まれて行く。The plurality of blades 7 provided on the outer surface of the outer shell 2 are attached in a screw shape, and are fixed by welding. By rotating the pile body with this blade 7 during construction, it is screwed into the ground.

第８実施例（第１１図(a),(b),(c)参照） 第８実施例は先端シュー１の上面側に開口する雌ねじ部
材を埋め込んだものである。この実施例では外殻２の中
心に鋼管パイプ８を貫通させ、この鋼管８の上端に雌ね
じ部材５を溶接により固定し、コンクリート３を充填し
たものである。外殻２の外面には一続きの螺旋状の刃７
が形成され、先端にはビツトの役目をする鋼材が取り付
けられている。Eighth Embodiment (Refer to FIGS. 11 (a), (b), and (c)) In the eighth embodiment, a female screw member that opens to the upper surface side of the tip shoe 1 is embedded. In this embodiment, a steel pipe 8 is penetrated through the center of the outer shell 2, an internal thread member 5 is fixed to the upper end of the steel pipe 8 by welding, and concrete 3 is filled therein. On the outer surface of the outer shell 2, a series of spiral blades 7
Is formed, and a steel material serving as a bit is attached to the tip.

第１２図(a)〜(e)はこの発明のねじ込みぐいの施工法に
おける施工手順の概略を示したもので、次のような手順
で作業が行なわれる。12 (a) to (e) show the outline of the construction procedure in the construction method of the screw-in pile according to the present invention, and the work is performed in the following procedure.

先端シュー１およびくい部材11をねじ接合し、鉛直に
支持する((a)図参照）。The tip shoe 1 and the pile member 11 are screwed together and vertically supported (see FIG. (A)).

くい部材11の上端に回転を与えながら、くい部材11を
地盤中にねじ込んで行く（(b)図参照）。While rotating the upper end of the pile member 11, the pile member 11 is screwed into the ground (see FIG. (B)).

新たなくい部材11をねじ接合し、さらにねじ込んで行
く（(c),(d)図参照）。The new stake member 11 is screw-joined and further screwed in (see FIGS. (C) and (d)).

順次、くい部材11を接続し、所定長さのくいを地盤中
に形成する（(e)図参照）。The pile members 11 are sequentially connected to form a pile having a predetermined length in the ground (see FIG. (E)).

〔発明の効果〕〔The invention's effect〕

この発明のねじ込みぐいの施工法では先端シューとくい
部材、さらにくい部材どうしをねじ接合により簡単に接
合でき、現場溶接を必要としない。また、くい部材どう
しおよび先端シューをねじ接合しているため、地盤中へ
の貫入に際し、同方向にねじ込むことにより、接合部が
緩んだり、あるいはねじりによつて接合部が壊れるとい
つた心配がない。According to the method of constructing the screw-in pile of the present invention, the tip shoe, the pile member, and the hard-to-see member can be easily joined by screw joining, and on-site welding is not required. Also, since the stake members and the tip shoe are screwed together, there is a fear that the joint will loosen when it is penetrated into the ground by screwing in the same direction, or the joint will break due to twisting. Absent.

先端シューとして種々の外形のものを用意しておくこと
により、土質，くい径，くいの材質等に応じて先端シュ
ーを使い分けることができ、またくい部材について異な
る寸法のものを組み合わせて任意の長さのくいを形成す
ることができる。By preparing tip shoes of various outer shapes, the tip shoes can be used properly according to the soil quality, the diameter of the pile, the material of the pile, etc. Also, it is possible to combine the pieces of different dimensions for the pile members to achieve any length. Can form a sap.

先端シューやくい部材のねじ接合と地盤中へのねじ込み
には同一の道具を使用することもでき、またねじ込み式
であるため簡易な設備で施工でき経済的である。The same tool can be used for screwing the tip shoe or pile member and screwing into the ground, and since it is a screw-in type, it can be constructed with simple equipment and is economical.

【図面の簡単な説明】[Brief description of drawings]

第１図および第２図はこの発明の実施例における接続部
の斜視図、第３図(a),(b),(c)はそれぞれ第１実施例の
縦断面図，平面図，底面図，第４図(a),(b)はそれぞれ
第２実施例の平面図，正面図（右半分は縦断面図）、第
５図は同じく第２実施例の接続部の縦断面図、第６図は
第３実施例の接続部の縦断面図、第７図(a),(b),(c)は
それぞれ第４実施例の縦断面図、そのＡ−Ａ断面図、同
じくＢ−Ｂ断面図、第８図(a),(b),(c)はそれぞれ第５
実施例の縦断面図、そのＣ−Ｃ断面図、同じくＤ−Ｄ断
面図、第９図(a),(b),(c)はそれぞれ第６実施例の接続
部の縦断面図、そのＥ−Ｅ断面図、同じくＦ−Ｆ断面
図、第１０図(a),(b),(c)はそれぞれ第７実施例の平面
図，正面図，底面図、第１１図(a),(b),(c)はそれぞれ
第８実施例の平面図，正面図，底面図、第１２図(a)〜
(e)はこの発明におけるねじ込みぐいの施工手順の一例
を示す断面図である。 １……先端シュー、２……外殻、３……コンクリート、
４……雄ねじ部材、５……雌ねじ部材、６……アンカー
筋、７……刃、８……鋼管パイプ、11……くい部材、12
……外殻、13……コンクリート、14……雄ねじ部材、15
……雌ねじ部材、16……支持金具、17……蓋、18……鋼
管パイプ、19……アンカー筋、20……蓋、21……棒鋼、
22……ナツト、23……スペーサー、24……端板、25,26
……スペーサー。1 and 2 are perspective views of a connecting portion in an embodiment of the present invention, and FIGS. 3 (a), (b) and (c) are a longitudinal sectional view, a plan view and a bottom view of the first embodiment, respectively. 4 (a) and 4 (b) are respectively a plan view and a front view (the right half is a vertical sectional view) of the second embodiment, and FIG. 5 is a vertical sectional view of the connecting portion of the second embodiment, respectively. FIG. 6 is a vertical sectional view of the connecting portion of the third embodiment, and FIGS. 7 (a), (b), and (c) are vertical sectional views of the fourth embodiment, their AA sectional views, and B- B sectional view, FIG. 8 (a), (b), (c) is the fifth
A longitudinal sectional view of the embodiment, a CC sectional view thereof, a DD sectional view thereof, and FIGS. 9 (a), (b), and (c) are vertical sectional views of a connecting portion of the sixth embodiment, respectively. EE sectional view, FF sectional view, and FIGS. 10 (a), (b), and (c) are the plan view, front view, bottom view, and FIG. 11 (a) of the seventh embodiment, respectively. (b) and (c) are respectively a plan view, a front view, a bottom view, and FIG. 12 (a) of the eighth embodiment.
(e) is sectional drawing which shows an example of the construction procedure of the screw-in pile in this invention. 1 ... Tip shoe, 2 ... Outer shell, 3 ... Concrete,
4 ... Male screw member, 5 ... Female screw member, 6 ... Anchor bar, 7 ... Blade, 8 ... Steel pipe, 11 ... Pile member, 12
…… Outer shell, 13 …… Concrete, 14 …… Male screw member, 15
...... Female screw member, 16 …… Supporting metal fittings, 17 …… Cover, 18 …… Steel pipe, 19 …… Anchor bar, 20 …… Cover, 21 …… Steel bar,
22 …… Nut, 23 …… Spacer, 24 …… End plate, 25,26
……spacer.

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭48−49212（ＪＰ，Ａ) 実開 昭59−76634（ＪＰ，Ｕ) 実開 昭61−193134（ＪＰ，Ｕ) 実開 昭62−133733（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-48-49212 (JP, A) actual development S59-76634 (JP, U) actual development S61-193134 (JP, U) actual development S62- 133733 (JP, U)

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】上面側にくい部材と連結するための雄ねじ
部材または雌ねじ部材を設けた先端シューに、円筒状の
外殻内にコンクリートを充填し、両端面に雄ねじ部材ま
たは雌ねじ部材を設けたくい部材を、前記雄ねじ部材お
よび雌ねじ部材を利用してねじ接合し、該くい部材を鉛
直に支持した状態で回転させながら地盤中にねじ込んで
行き、順次同様にくい部材を１または複数本ねじ接合し
て継足し、地盤中にねじ込んで所要長さのくいを形成す
ることを特徴とするねじ込みぐいの施工法。1. A tip shoe having a male screw member or a female screw member for connecting with a member difficult to face on the upper side, concrete is filled in a cylindrical outer shell, and male screw members or female screw members are provided on both end faces. A member is screw-joined by using the male screw member and the female screw member, and is screwed into the ground while being rotated while the pile member is vertically supported, and one or a plurality of difficult members are sequentially screw-joined. A method of constructing a screw pile that is replenished and screwed into the ground to form a pile of the required length.