JPH0365764B2 - - Google Patents
Info
- Publication number
- JPH0365764B2 JPH0365764B2 JP19781185A JP19781185A JPH0365764B2 JP H0365764 B2 JPH0365764 B2 JP H0365764B2 JP 19781185 A JP19781185 A JP 19781185A JP 19781185 A JP19781185 A JP 19781185A JP H0365764 B2 JPH0365764 B2 JP H0365764B2
- Authority
- JP
- Japan
- Prior art keywords
- steel pipe
- end plates
- concrete
- joint end
- piles
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 47
- 239000010959 steel Substances 0.000 claims description 47
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Description
【発明の詳細な説明】
＜産業上の利用分野＞
本発明は周りに鋼管が一体的に被覆された短尺
の複合タイプとコンクリート杭の製造方法に係
り、特に短い寸法例えば0.4〜３ｍ位の長さを有
する短尺鋼管コンクリート杭の製法に関するもの
である。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a method for manufacturing a short composite type and concrete pile, the circumference of which is integrally covered with a steel pipe. The present invention relates to a method for manufacturing short steel pipe concrete piles with high strength.
＜従来の技術＞
従来一般に開発されていたコンクリート杭の周
りに鋼管を一体に被覆した所謂複合タイプの鋼管
コンクリート杭は５ｍ以上のものであり、それ以
下のものは一般に製造されていなかつた。又杭の
全長の一部に鋼管を被覆した鋼管コンクリート杭
は例えば実公昭53−29363号公報、或いは同54−
5521号公報等に示す如く開発されているが、これ
等の技術は全てむきだしになつたコンクリート杭
の一部に鋼管を取り付ける技術であつて、短いコ
ンクリート杭の全長に亘つて鋼管を被覆したコン
クリート杭を効率良く製造し得る技術は全く開発
されていなかつた。<Conventional Technology> The so-called composite type steel pipe concrete piles, which are concrete piles that are integrally covered with steel pipes, which have been generally developed in the past, have a length of 5 m or more, and those shorter than that have generally not been manufactured. In addition, steel pipe concrete piles in which a portion of the entire length of the pile is coated with steel pipes are disclosed in, for example, Publication No. 53-29363 or Publication No. 54-
These technologies have been developed as shown in Publication No. 5521, etc., but all of these technologies are technologies for attaching steel pipes to a part of exposed concrete piles; No technology had been developed to efficiently manufacture piles.
＜発明が解決しようとする問題点＞
本発明は従来の欠点に鑑み開発された全く新規
な技術であつて、特に全長に亘つて鋼管が被覆さ
れ短い複合タイプのコンクリート杭を製造するこ
とを可能とするとともにこの杭を効率良く安価に
大量に製造しようとするものである。<Problems to be Solved by the Invention> The present invention is a completely new technology developed in view of the conventional drawbacks, and in particular, it is possible to manufacture short composite type concrete piles with steel pipes covering the entire length. The aim is to manufacture these piles in large quantities efficiently and inexpensively.
従来の如く、長尺の鋼管コンクリート杭やその
一部に鋼管が取り付けられたコンクリート杭に対
して、これを施工する現場の地盤状態によつて
は、要求される鋼管コンクリート複合部の長さ
が、この杭の長さよりも短くても良い場合があ
る。この場合には既製と鋼管のコンクリートの不
要な一部を切り取らなければならず、繁雑である
と共に無駄になる等の欠点があつた。 As in the past, for long steel pipe concrete piles or concrete piles with steel pipes attached to part of them, the required length of the steel pipe concrete composite part may vary depending on the ground condition at the construction site. , may be shorter than the length of this pile. In this case, it is necessary to cut out unnecessary parts of the concrete from the ready-made steel pipes, which is complicated and wasteful.
従つて、従来のこれ等の欠点を改善する為に
は、予め短い寸法の鋼管コンクリート杭を製造し
ておき、これを通常の長さを持つた杭に溶接など
して連結して一定の長さに調節して使用する方が
はるかに有利である。 Therefore, in order to improve these conventional drawbacks, short-sized steel pipe concrete piles are manufactured in advance, and these are connected to piles of normal length by welding, etc., to achieve a fixed length. It is much more advantageous to use it in a controlled manner.
本発明はこれ等の点に鑑み、短尺の鋼管コンク
リート杭を効率良く提供しようとするものであ
り、しかも通常の長さ（例えば10ｍ）を有する鋼
管コンクリートと同様な製造工程で生産すること
を可能ならしめることを目的として開発したもの
である。 In view of these points, the present invention aims to efficiently provide short steel pipe concrete piles, which can be produced using the same manufacturing process as steel pipe concrete having a normal length (for example, 10 m). It was developed for the purpose of acclimatization.
＜問題点を解決するための手段＞
本発明は中心部に中空部が設けられかつ周りに
ボルト孔が数個穿設された継手端板を２個一対に
して組み合わせ、該継手端板の中空部とほぼ同径
の内径を有しかつ該継手端板のボルト孔位置より
小さい外径を持つた中間リングを一対の継手端板
で挾持すると共にこれ等を相互にボルト止めして
連結し、かつ所定の長さを持つた鋼管を夫々継手
端板に連結して一体化し、続いて該鋼管の内部に
コンクリートを流入しながら遠心成形することに
よつて鋼管内に中空コンクリートを形成し、更に
養生後継手端板を連結していたボルトを切断して
製造することを特徴とした短尺鋼管コンクリート
杭の製法である。<Means for Solving the Problems> The present invention combines two joint end plates each having a hollow portion in the center and having several bolt holes drilled around the circumference. An intermediate ring having an inner diameter substantially the same as that of the joint end plate and an outer diameter smaller than the bolt hole position of the joint end plate is held between a pair of joint end plates, and these are connected by bolting to each other, The steel pipes each having a predetermined length are connected to the joint end plates and integrated, and then the concrete is poured into the steel pipes and centrifugally formed to form hollow concrete inside the steel pipes. This is a manufacturing method for short steel pipe concrete piles, which is characterized by manufacturing by cutting the bolts that connect the end plates after curing.
＜作用＞
本発明に係る方法は上述の如く、中空部を有す
る継手端板を２個一対で組み合わせた後これ等に
夫々短い鋼管を一体的に連結し、必要に応じてこ
の工程を繰り返すことによつて長尺のパイプを構
成したので、このパイプを使用することによつて
従来の長尺の鋼管コンクリートと同様な工程で多
数の短い鋼管コンクリート管を一度に数本を製造
することが出来る。又一対の継手端板には中間リ
ングを介在させるので、このリングが継ぎ目から
コンクリートの漏出を防止し、かつボルトを切断
する際のスペーサの役割をすることが出来る。<Function> As described above, the method according to the present invention involves assembling two joint end plates each having a hollow portion in pairs, then integrally connecting each short steel pipe to each end plate, and repeating this process as necessary. Since a long pipe was constructed using this method, by using this pipe, it is possible to manufacture several short steel pipe concrete pipes at once using the same process as conventional long steel pipe concrete. . Furthermore, since an intermediate ring is interposed between the pair of joint end plates, this ring can prevent leakage of concrete from the joint and can also serve as a spacer when cutting the bolt.
＜実施例＞
図により本発明に係る方法の一実施例を具体的
に説明すると、第１図乃至第６図に於いて、１は
中心部に中空部２を有する短い円筒状の継出端板
であつて、その外周縁には数個のボルト孔３が穿
設されている。４は２個の継手端板１によつて挾
持されるリングであつて、前記端板１の中空部２
と実質的に同径の内径を有し、かつその外径は端
板１に設けられた数個のボルト孔３の位置より小
さい外径、即ちボルト孔３にボルトを挿入する際
に邪魔にならないような外径をもつて構成されて
いる。前述の端板１は２個が一対となつて相互に
背中合わせに向かい合わされ、かつ両者間にはリ
ング４が介在され、更に数個の高張力に耐えるこ
とが出来るボルト５とナツト６とによつて連結さ
れている。従つてボルト５はリング４の外方に露
出した状態で取り付けられている。<Example> An example of the method according to the present invention will be specifically described with reference to the drawings. In FIGS. 1 to 6, 1 is a short cylindrical joint end having a hollow part 2 in the center. It is a plate, and several bolt holes 3 are bored in its outer periphery. Reference numeral 4 denotes a ring held between two joint end plates 1, and a hollow portion 2 of the end plates 1.
, and its outer diameter is smaller than the positions of the several bolt holes 3 provided in the end plate 1, i.e., it has an outer diameter that is substantially the same as that of the bolt holes 3 provided in the end plate 1; It is constructed with an outer diameter that does not The aforementioned end plates 1 are arranged in pairs, facing each other back to back, with a ring 4 interposed between them, and several bolts 5 and nuts 6 capable of withstanding high tension. are connected together. Therefore, the bolt 5 is attached to the ring 4 in a state where it is exposed to the outside.
次に上述の如く背中合わせに連結された端板１
に夫々所定の長さ例えば１ｍの長さを有する短尺
鋼管７を溶接することによつてこれ等を相互に連
結して一体化し、特に第１図に示す如く、この工
程を順に繰り返すことによつて複数個の端板１と
鋼管７とを連結して一本の長い筒対を構成し、更
に通常の長さを持つた鋼管コンクリート杭の製造
の際と同様に前述の如く構成された筒体の両端に
所定の形状を持つた端８，９を夫々溶接して固着
する。又使用される鋼管７の径が大きい場合等に
は特に第７図及び第８図に示す如き鋼管７の外径
と同じ曲面を持つた矩形状の補助板１０を使用
し、これを筒体の連結部の外方に溶着して補強す
ることが出来る。 Next, the end plates 1 are connected back to back as described above.
These are interconnected and integrated by welding short steel pipes 7 each having a predetermined length, for example, 1 m, and in particular, as shown in FIG. 1, by repeating this process in order. Then, a plurality of end plates 1 and steel pipes 7 are connected to form a pair of long cylinders, and the cylinders configured as described above are further constructed as in the case of manufacturing steel pipe concrete piles having a normal length. Ends 8 and 9 having a predetermined shape are welded and fixed to both ends of the body, respectively. In addition, especially when the diameter of the steel pipe 7 used is large, a rectangular auxiliary plate 10 having the same curved surface as the outer diameter of the steel pipe 7 as shown in FIGS. 7 and 8 is used, and this is used as a cylinder. It can be reinforced by welding to the outside of the connecting part.
続いて本発明に係る方法に於いては上述の如く
構成された筒体を遠心成形用の型枠の中に挿入し
て、この型枠と共に筒体を高速度で回転しなが
ら、筒体の各鋼管７の内部にコンクリート注入
し、第９図に示す如き中心部に中空部１１を有す
る中空コンクリート１２を鋼管７内にこの鋼管７
と一体的に構成することが出来る。 Next, in the method according to the present invention, the cylindrical body configured as described above is inserted into a mold for centrifugal molding, and the cylindrical body is rotated at high speed together with the mold. Concrete is poured into the inside of each steel pipe 7, and a hollow concrete 12 having a hollow part 11 in the center as shown in FIG.
It can be configured integrally with
その後これ等のコンクリート１２を養生した
後、補助板１０を使用した場合はこれを除去し、
次にリング４の外方に露出したボルト５を金鋸や
溶断により切断することによつて、連結された端
板１を相互に分離し、かつ端板１間に設けられた
中間リング４を取り外し、これによつて第１０図
に示す如き短尺の鋼管コンクリートを製造するこ
とが出来る。 After that, after curing these concrete 12, if the auxiliary plate 10 is used, remove it,
Next, by cutting the bolts 5 exposed to the outside of the ring 4 using a hacksaw or cutting, the connected end plates 1 are separated from each other, and the intermediate ring 4 provided between the end plates 1 is removed. By removing it, it is possible to manufacture short steel pipe concrete as shown in FIG.
本発明に使用される上述の継手端板１及び端板
８，９の夫々の材質、厚み、寸法等は従来の通常
の継手端板として使用していたものと同等のもの
が使用可能である。又中間リング４の巾即ち外径
から内径を差し引いた値の半分の数値は10〜25mm
であり、その厚さは10〜20mmであり、又その材質
は繰り返し使用し変形しないような鋼材を使用す
ることが望ましい。 The materials, thickness, dimensions, etc. of the above-mentioned joint end plate 1 and end plates 8 and 9 used in the present invention can be the same as those used as conventional joint end plates. . Also, the width of the intermediate ring 4, which is half of the value obtained by subtracting the inner diameter from the outer diameter, is 10 to 25 mm.
The thickness thereof is 10 to 20 mm, and it is desirable to use a steel material that will not deform even after repeated use.
本発明に使用される高張力に耐えるボルト５と
ナツト６とのセツトとしては、ボルト５のトルク
係数が１万キログラム以上であり、セツトのトル
ク係数〔ナツトを締め付けるモーメント（Kg・
ｍ）をボルトのネジ外径の基準寸法（mm）とトル
クを加えて締め付けたときのボルト軸方向に作用
する引張力（Kg）との積で割つた値を1000倍した
値〕が0.11以上のものを言い、一般的にハイテン
シヨンボルトとナツトと称されているものであ
り、例えばJIS−B1186に規定されたボルト・ナ
ツトのセツトより選んで使用出来る。また座金も
併用し得る。この場合に好ましいセツトは前述の
JIS規定に従つた等級表示で、F10Tのボルトと
F10のナツト、F35の座金の組み合わせであり、
ネジの呼びは16〜20mmが最適であり、ボルトと首
下（ナツト頭を除く）長さは継手端板１厚みや中
間リング４の厚さにより定められるが、一般には
50mm程度が良く用いられる。 As for the set of the bolt 5 and nut 6 that can withstand high tension used in the present invention, the torque coefficient of the bolt 5 is 10,000 kg or more, and the torque coefficient of the set [the moment for tightening the nut (Kg.
m) divided by the product of the reference dimension of the bolt's thread outer diameter (mm) and the tensile force (Kg) that acts in the axial direction of the bolt when tightened with torque, multiplied by 1000] is 0.11 or more. These are generally referred to as high tension bolts and nuts, and can be selected from the bolt and nut set specified in JIS-B1186, for example. A washer may also be used. In this case, the preferred set is
Graded according to JIS regulations, with F10T bolts.
It is a combination of F10 nut and F35 washer.
The optimum thread size is 16 to 20 mm, and the length of the bolt and neck (excluding the nut head) is determined by the thickness of the joint end plate 1 and the thickness of the intermediate ring 4, but in general
Around 50mm is often used.
上記実施例に於ける鋼管７に端板１、端８，９
等を溶接するに当つては、例えば第１１図Ａ，Ｂ
に示す如く、Ｈ型鋼よりなりかつ中央部にフオー
クリフトの爪を挿入することが出来る切込１３を
持つた架台１４を利用し、第１２図に示す如く、
この架台１４に数個の鋼管７を順に配列し、その
状態で端板１等を鋼管７に溶接することが出来
る。このようにした場合は一連結の鋼管７をフオ
ークリフトで運搬し型枠内に収納することが出来
る。次に前述の如く連結して構成された鋼管７等
を成形型枠内に装着するに当たつては台１３図に
示す如く、鋼管７と型枠１５との間にゴム板等よ
り構成されたスペーサー１６を介在せしめること
によつて鋼管７を型枠１５内で安定せしめること
が出来る。 In the above embodiment, the steel pipe 7 has an end plate 1 and ends 8 and 9.
When welding, for example, Fig. 11 A and B
As shown in Fig. 12, a frame 14 made of H-shaped steel and having a notch 13 in the center into which a forklift claw can be inserted is used, and as shown in Fig. 12,
Several steel pipes 7 are arranged in sequence on this frame 14, and the end plates 1 etc. can be welded to the steel pipes 7 in this state. In this case, the series of steel pipes 7 can be transported by a forklift and stored in the formwork. Next, when installing the steel pipes 7, etc., which are connected and constructed as described above, into the molding frame, a rubber plate or the like is constructed between the steel pipes 7 and the molding frame 15, as shown in the table 13 figure. By interposing the spacer 16, the steel pipe 7 can be stabilized within the formwork 15.
＜発明の効果＞
本発明に係る方法は上述の如き構成と作用とを
有するので、短尺との鋼管とコンクリートとが一
体的に複合されたコンクリート杭を通常の鋼管コ
ンクリート杭を製造すると同様な作業工程により
簡単かつ確実に製造することが出来、かつボルト
等を利用することによつて一回の工程により数個
の短尺鋼管コンクリート杭を一度に大量生産する
ことが出来、従つて安価に品質の安定した良質の
杭を製造することが出来、これによつて杭施工現
場の地盤状況に応じて予め用意された前述の如き
所望の長さの短い鋼管コンクリート杭を溶接一体
化することによつて希望する長さの杭を簡単に得
ることが出来る等の特徴を有するものである。<Effects of the Invention> Since the method according to the present invention has the above-described structure and operation, manufacturing a concrete pile in which a short steel pipe and concrete are integrally combined requires the same work as a normal steel pipe concrete pile. It can be manufactured easily and reliably by the process, and by using bolts, etc., several short steel pipe concrete piles can be mass-produced at once in a single process. It is possible to manufacture stable and high-quality piles by welding together short steel pipe concrete piles of the desired length, as described above, prepared in advance according to the ground conditions at the pile construction site. It has features such as being able to easily obtain piles of desired length.
第１図乃至第１３図は夫々本発明の方法を実施
する工程を示す説明図である。
１，８，９は端板、２，１１は中空部、３はボ
ルト孔、４はリング、５はボルト、７は鋼管、１
０は補助板、１２は中空コンクリートである。
FIGS. 1 to 13 are explanatory diagrams showing the steps of carrying out the method of the present invention, respectively. 1, 8, 9 are end plates, 2, 11 are hollow parts, 3 are bolt holes, 4 are rings, 5 are bolts, 7 are steel pipes, 1
0 is an auxiliary plate, and 12 is hollow concrete.
Claims (1)
孔が数個穿設された継手端板を２個一対にして組
み合わせ、該継手端板の中空部とほぼ同径の内径
を有しかつ該継手端板のボルト孔位置より小さい
外径を持つた中間リングを一対の継手端板で挾持
すると共にこれ等を相互にボルト止めして連結
し、かつ所定の長さを持つた鋼管を夫々継手端板
に連結して一体化し、続いて該鋼管の内部にコン
クリートを流入しながら遠心成形することによつ
て鋼管内に中空コンクリートを形成し、更に養生
後継手端板を連結していたボルトを切断して製造
することを特徴とした短尺鋼管コンクリート杭の
製法。1. Two joint end plates each having a hollow part in the center and several bolt holes drilled around the circumference are assembled in pairs, and have an inner diameter that is approximately the same as the hollow part of the joint end plate, and a An intermediate ring having an outer diameter smaller than the bolt hole position of the joint end plate is held between a pair of joint end plates, and these are connected by bolting to each other, and steel pipes having a predetermined length are respectively connected to the joint. After connecting and integrating the end plates, hollow concrete was formed inside the steel pipe by centrifugal forming while pouring concrete into the steel pipe, and after curing, the bolts that connected the end plates were removed. A method for manufacturing short steel pipe concrete piles, which is characterized by manufacturing by cutting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19781185A JPS6259007A (en) | 1985-09-09 | 1985-09-09 | Manufacture of short-sized steel-pipe concrete pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19781185A JPS6259007A (en) | 1985-09-09 | 1985-09-09 | Manufacture of short-sized steel-pipe concrete pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6259007A JPS6259007A (en) | 1987-03-14 |
| JPH0365764B2 true JPH0365764B2 (en) | 1991-10-15 |
Family
ID=16380736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19781185A Granted JPS6259007A (en) | 1985-09-09 | 1985-09-09 | Manufacture of short-sized steel-pipe concrete pile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6259007A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0670927A (en) * | 1992-08-27 | 1994-03-15 | Toshiba Corp | Ultrasonic diagnostic device |
-
1985
- 1985-09-09 JP JP19781185A patent/JPS6259007A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6259007A (en) | 1987-03-14 |
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