JPS60206546A - Manufacture of pillar material - Google Patents
Manufacture of pillar materialInfo
- Publication number
- JPS60206546A JPS60206546A JP6453484A JP6453484A JPS60206546A JP S60206546 A JPS60206546 A JP S60206546A JP 6453484 A JP6453484 A JP 6453484A JP 6453484 A JP6453484 A JP 6453484A JP S60206546 A JPS60206546 A JP S60206546A
- Authority
- JP
- Japan
- Prior art keywords
- thick
- tube
- large diameter
- tapered
- column
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/04—Reducing; Closing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は鉄骨構造物等の柱材の製造法に関する。[Detailed description of the invention] The present invention relates to a method of manufacturing column materials for steel structures and the like.
鉄骨構造物における円管柱の梁接合部（仕口部）は、所
要の仕口剛性確保のために、厚肉に形成され、あるいは
環状突起が設けられる。第８図は、円管（４５，４５）
と、仕口部となるべき厚肉の円管（４６）とを管端面の
突合せ溶接により接合して組立柱とし、厚肉円管（４６
）の外面に梁（４２）を溶接接合するようにした例であ
り、第９図は、環状突起（４７）を有する円管（４８）
同士を溶接接合して組立柱とし、その環状突起（４７，
４７）に梁（４２）のフランジ（４２・１．４２・１）
を当てがって溶接接合するようにした例である。Beam joints (joint parts) of circular pipe columns in steel structures are formed thick or provided with annular protrusions in order to ensure required joint rigidity. Figure 8 shows circular pipes (45, 45)
and a thick-walled circular tube (46) that will become the joint part are joined by butt welding of the tube end faces to form an assembled column, and the thick-walled circular tube (46)
), and Fig. 9 shows an example in which a beam (42) is welded to the outer surface of a circular pipe (48) having an annular projection (47).
They are welded together to form an assembled column, and its annular protrusion (47,
Flange (42・1.42・1) of beam (42) on 47)
This is an example of welding and joining by applying
上記第８図の柱は、円管（４５） 、（４６）として引
抜鋼管や溶接鋼管などを用いて組立てられるが、仕口部
をなす厚肉円管（４６）とその両側の円管（４５，４５
）の肉厚が溶接接合部（Ｗ）を境にして急激に変化する
ため、使用状態において応力集中、局部変形による耐力
低下環が生し易い欠点がある。The pillar shown in Fig. 8 above is assembled using drawn steel pipes, welded steel pipes, etc. as the circular pipes (45) and (46), but the thick-walled circular pipe (46) forming the joint part and the circular pipes on both sides ( 45,45
) changes rapidly at the welded joint (W), which has the disadvantage that stress concentration and local deformation tend to lower the yield strength during use.
また、応力集中のネックとなる部分に溶接線が２本もあ
ることは好ましくないことである。Furthermore, it is undesirable that there are two weld lines in a portion that causes stress concentration.
一方、環状突起（４７，４７）を有する柱の組立てに使
用される円管（４８）としては遠心力鋳造管が用いられ
る。第１０図にその鋳造方案を示す。（１）は鋳型であ
り、その内面の一端側には大径部（７）が設けられてい
る。（８）は大径部（７）に嵌装されたライナーであり
、ライナー（８）の段着部壁面（８１）と大径部（７）
の段着部壁面（７１）とで、鋳型内周面を一巡する環状
溝（９）が画成されている。なお、（５，５）は鋳型両
端開口部に嵌着された湯止め用バンド（端板）である。On the other hand, a centrifugally cast tube is used as the circular tube (48) used to assemble the column having the annular projections (47, 47). Figure 10 shows the casting method. (1) is a mold, and a large diameter portion (7) is provided on one end side of the inner surface of the mold. (8) is a liner fitted into the large diameter part (7), and the wall surface (81) of the stepped part of the liner (8) and the large diameter part (7)
An annular groove (9) that goes around the inner peripheral surface of the mold is defined by the stepped part wall surface (71). Note that (5, 5) are hot water stopper bands (end plates) fitted to the openings at both ends of the mold.
該鋳型（１）を、その中心線を回転軸心として回転させ
ながら溶鋼を鋳込むと、遠心力の作用下に図示のように
、環状溝（９）にて形成される環状突起（４７）を有す
る円管（４８）が得られる。When molten steel is poured into the mold (1) while rotating about its center line, an annular protrusion (47) is formed in an annular groove (9) under the action of centrifugal force as shown in the figure. A circular tube (48) having a diameter is obtained.
遠心力鋳造法は大量生産に適しており、組立柱構成ユニ
ットとしての円管（柱材）を安価に製造することができ
る。また、その円管を構成ユニットとして組立てられた
柱は、仕口部における溶接線（Ｗ）が１本だけであるか
ら、前記第８図の柱に比し強度的にも有利である。The centrifugal force casting method is suitable for mass production, and can manufacture circular tubes (column materials) as assembled column constituent units at low cost. Furthermore, since the column assembled using the circular tube as a constituent unit has only one weld line (W) at the joint, it is advantageous in terms of strength compared to the column shown in FIG. 8.
しかしながら、前記鋳造方案による遠心力鋳造において
は、環状溝（９）を形成するための鋳型の組立てに煩瑣
な手間を要し、生産性が極めて悪いうえに、ライナー（
８）や鋳型大径部（７）の段着部壁面（８１）、（７１
）に鋳造時の熱応力による変形・割れが生じ易く、耐用
寿命が短い。しかも、仕口部に必要な環状突起（４７，
４７）の位置、突起の間隔や突出高さ等は柱の設計に応
してそのつど変るものであるから、その図面が決定する
まで、鋳型やライナーの製作に着手することができず、
従って納期の対応に著しい困難を伴なう等の欠点がある
。However, in the centrifugal casting according to the above-mentioned casting method, the assembly of the mold for forming the annular groove (9) requires a lot of time and effort, and the productivity is extremely low.
8) and the wall surface of the stepped part of the mold large diameter part (7) (81), (71
) is easily deformed and cracked due to thermal stress during casting, resulting in a short service life. Moreover, the annular protrusion (47,
47) Since the position of the column, the spacing of the protrusions, the protrusion height, etc. change each time depending on the design of the column, it is not possible to start manufacturing the mold or liner until the drawings are finalized.
Therefore, there are drawbacks such as significant difficulty in meeting delivery dates.
また、上記従来の柱の仕口部は、その上下の直管部の表
面よりも外方へ膨出している形状を有するので、仕口部
の膨出面の全体が梁（４２）で被蔽されるような場合は
ともかく、部分的に、例えば２方向または３方向にのみ
梁が接合される場合は、梁が接合された部分以外の膨出
面は露出したまま直接視覚されることになり、外観の不
体裁は免れ本発明は円管柱に関する上記問題点を解決し
たものであり、第１図に示されるように、全長にわたっ
て一定の外径を有する直円管であって、その一端側にテ
ーバ部（２５）を介して、内方へ膨出する厚肉部（２１
）を有する柱材の製造法を提供する。In addition, since the joint part of the conventional column has a shape that bulges outward from the surfaces of the straight pipe parts above and below, the entire bulging surface of the joint part is covered with the beam (42). Regardless of the case, if the beams are joined only partially, for example in two or three directions, the bulging surfaces other than the joined parts of the beams will remain exposed and can be seen directly. The present invention solves the above-mentioned problems regarding cylindrical columns without causing unsightly appearance.As shown in FIG. The thick part (21) bulges inward through the tapered part (25).
) is provided.
本発明の柱材の製造法は、直管部の一端側に外方へ膨出
する厚肉大径部を有する遠心力鋳造管を １素管とし、
その厚肉大径部を絞り加工することにより縮径して上記
形状を有する柱材を得るものである。The method for manufacturing a column material of the present invention uses a centrifugally cast pipe having a thick walled large diameter part that bulges outward at one end of a straight pipe part as one blank pipe;
The diameter of the thick large diameter portion is reduced to obtain a column having the above shape.
以下、本発明について詳しく説明する。The present invention will be explained in detail below.
本発明において素管として使用される遠心鋳造管は、第
２図に示されるように、直管部（１１）の一端側に、テ
ーバ部（１３）を介して、外方へ膨出する厚肉大径部（
１２）を有している。直管部（１１）と厚肉太径部（１
２）の内径は同一であって、テーバ部（１３）は内周面
（１４）と外周の円錐面をなすテーバ面（１５）にて画
成されている。As shown in FIG. 2, the centrifugally cast pipe used as the raw pipe in the present invention has a thickness that bulges outward through a tapered part (13) at one end of the straight pipe part (11). Meat large diameter part (
12). Straight pipe part (11) and thick wall large diameter part (1
2) have the same inner diameter, and the tapered portion (13) is defined by an inner circumferential surface (14) and an outer circumferential conical tapered surface (15).
上記遠心鋳造管（１０）は第３図に示す鋳造方案により
鋳造される。（１）は遠心鋳造鋳型であり、く２）は鋳
型内の直管形成部、（３）は大径部、（４）はテーバ面
である。鋳型（１）の両端開口部には端板（５，５）が
嵌着されており、鋳型の中心軸を回転中心とする回転駆
動下に、端板（５）の注湯孔（６）から鋳型内に所定量
の溶鋼を鋳込み、遠心力の作用により鋳型内壁面にそっ
て所定の層厚の溶湯シリンダ（１０’）を形成して凝固
させれば、第２図に示すごとき形状の鋳造管が得られる
。The centrifugal casting tube (10) is cast according to the casting method shown in FIG. (1) is a centrifugal casting mold, 2) is a straight pipe forming part in the mold, (3) is a large diameter part, and (4) is a tapered surface. End plates (5, 5) are fitted into the openings at both ends of the mold (1), and the pouring hole (6) of the end plate (5) is rotated about the central axis of the mold. A predetermined amount of molten steel is poured into a mold, and a cylinder (10') of a predetermined layer thickness is formed along the inner wall of the mold by the action of centrifugal force and solidified, resulting in a shape as shown in Figure 2. A cast tube is obtained.
ついで、上記遠心鋳造管（１０）を素管とし、その厚肉
大径部（１２）およびテーバ部（１３）に、プレスまた
はロール等による絞り加工を施す。素管（１０）の絞り
加工は、鋳型から引抜いた後の鋳造のままの状態で行わ
れることもあり、あるいはその後の焼ならし処理等の熱
処理が施こされた状態で行われることもある。この絞り
加工により、厚肉太径部（１２）およびテーバ部（１３
）を縮径し、第１図に示すように、その外径が直管部（
１１）の外径と一致する円筒面を形成する。絞り加工の
過程で厚肉部（１２）は所要の厚肉に保たれながら、そ
の内面が内方に膨出して厚内部内面（２２）が形成され
るとともに、その厚肉部（２１）と直管部（１１）との
間にテーバ部（２３）が与えられる。Next, the centrifugally cast pipe (10) is made into a blank pipe, and its thick-walled large diameter part (12) and tapered part (13) are subjected to a drawing process using a press, a roll, or the like. The drawing process of the raw pipe (10) may be performed in the as-cast state after being pulled out from the mold, or may be performed after subsequent heat treatment such as normalizing treatment has been performed. . Through this drawing process, the thick-walled large-diameter portion (12) and the tapered portion (13)
) is reduced in diameter, and as shown in Figure 1, its outer diameter becomes the straight pipe part (
11) Form a cylindrical surface that matches the outer diameter of. During the drawing process, the thick wall portion (12) is maintained at the required thickness while its inner surface bulges inward to form a thick inner surface (22), and the thick wall portion (21) and A tapered part (23) is provided between the straight pipe part (11) and the straight pipe part (11).
上記柱材（２０）を必要な本数準備し、これをユニット
として、厚肉部（２１）の端面同士および直管部（１１
）の端面同士を溶接接合することにより第４図に示すよ
うに所要の厚肉を有する仕口部（４１）を備えた円柱状
の組立柱（４０）として完成される。第６図は組立柱（
４０）の仕口部（４１）に梁（４２）を溶接接合した例
を示す。仕口部（４１）には従来の柱のような段差がな
く外観上は完全な円柱である。また、仕口部（４１）に
おける溶接線（Ｗ）も１本だけである。Prepare the necessary number of the pillar materials (20) and use them as a unit to connect the end faces of the thick walled part (21) and the straight pipe part (11).
) are welded together to form a cylindrical assembly column (40) with a joint section (41) having a required thickness as shown in FIG. 4. Figure 6 shows the assembly column (
An example is shown in which a beam (42) is welded to the joint part (41) of 40). The joint part (41) does not have a step like a conventional pillar, and has a perfect cylindrical appearance. Further, there is only one weld line (W) in the joint part (41).
本発明方法によれば、遠心鋳造管を素管とし、その一部
に絞り加工による簡単な成形加工を施すことにより組立
柱のユニットとしての柱材が得られるので、引抜鋼管等
を使用する製造法に比し安価である。しかも、素管の遠
心鋳造に使用される鋳型の内面形状は、直管形成部（２
）と大径部（３）とその間の傾斜面（４）とで画成され
る比較的単純な形状であり、前記第１Ｏ図のような複雑
な鋳造方案を必要としないので、鋳型の組立の煩られし
さや鋳型の早期損傷等の問題もない。According to the method of the present invention, a column material as a unit of an assembled column can be obtained by using a centrifugally cast tube as a blank tube and subjecting a part thereof to a simple forming process by drawing. It is cheaper than the method. Moreover, the inner shape of the mold used for centrifugal casting of raw pipes is different from the straight pipe forming part (2
), the large-diameter part (3), and the inclined surface (4) between them, and it has a relatively simple shape, and does not require a complicated casting method as shown in Fig. 1O. There are no problems such as troublesome work or early damage to the mold.
また、本発明による柱材をユニットとして組立てられる
柱は、外面に凹凸や段差がなく、全長にわたって一様な
外径を有する円柱であるから、従来の柱のように、仕口
部に膨出段差部が露呈するものに比し、使用状態におい
てずくれた美観を有する。しかも、その仕口部は、所要
の厚肉を有するとともに、厚肉部から直管部にかけて肉
厚が漸次変化し、そのうえ仕口部の溶接線は１本だけで
あるから、強度面でもすくれている。In addition, the pillars assembled from the pillar materials of the present invention as a unit are cylinders with no irregularities or steps on the outer surface and have a uniform outer diameter over the entire length, so unlike conventional pillars, there is no bulge at the joint. Compared to those with exposed stepped portions, they have a more sagging aesthetic appearance when in use. Moreover, the joint part has the required thickness, the wall thickness gradually changes from the thick part to the straight pipe part, and there is only one weld line at the joint part, so it is strong in terms of strength. I'm giving up.
更に、本発明により製造される柱材はビル等の柱材とし
てのみならず、海洋構造物（例えば、護岸・防波堤、横
嬌、離岸堤、養殖用係留施設）を構築するための、コン
クリートブロックと組合せて使用される杭材として使用
される。殊に、近時注目されている杭打連続ブロノクエ
法（ＰＢＳ工法）が適用される場合の杭材として有用で
ある。Furthermore, the column material manufactured by the present invention can be used not only as a column material for buildings etc., but also as a concrete material for constructing marine structures (e.g., seawalls/breakwaters, berths, off-shore breakwaters, mooring facilities for aquaculture). Used as pile material in combination with blocks. In particular, it is useful as a pile material when the continuous pile driving Bronoque method (PBS method), which has been attracting attention recently, is applied.
このＰＢＳ工法は、第７図に示すように杭（２ｏ）の下
部において、ＰＣ鋼線（５１）に懸吊されたくさび受け
（５２）に、円錐台形状の内（さび（５３）と、その外
周面に一致する傾斜内周面を有する外（さび（５４）と
を重ねてなる格点装置を装着し、そのくさびの上にコン
クリートブロック （５５）を重ねていく工法であり、
重ねられるコンクリートブロックの自重によりくさび効
果が徐々に働き、齋
所定のコンクリートブロックがセットされたのちＰＣ鋼
線を緊張させると、ブロックと杭とが一体構造となるも
のである。この場合の抗（２０）の格点部は応力集中部
であるから、それに耐え得るように他の部分よりも厚肉
であることを要する。本発明による柱材は一端側に内方
へ膨出する厚肉部を有するので、この部分を格点部とす
ることにより杭材として好適に使用される。As shown in Fig. 7, in this PBS construction method, at the bottom of the pile (2o), a wedge (53) in the shape of a truncated cone is attached to a wedge receiver (52) suspended from a PC steel wire (51). This is a construction method in which a concrete block (55) is stacked on top of the wedge (54), and a concrete block (55) is installed on top of the wedge (54), which has an inclined inner circumferential surface that matches the outer circumferential surface.
A wedge effect gradually works due to the weight of the stacked concrete blocks, and when the predetermined concrete blocks are set and the PC steel wire is tensed, the blocks and piles become an integral structure. In this case, since the point part of the resistor (20) is a stress concentration part, it needs to be thicker than other parts to withstand it. Since the pillar material according to the present invention has a thick part that bulges inward on one end side, it can be suitably used as a pile material by making this part a point part.
第１図は本発明により得られた柱材の形状を模式的に示
す一部切欠正面図、第２図は本発明に素管として使用さ
れる遠心鋳造管の一部切欠正面図、第３図は素管の遠心
鋳造方案の軸方向断面図、第４図は本発明により得られ
る柱材をユニ・ノドとする組立柱を模式的に示す軸方向
断面図、第５図は第４図のＶ−Ｖ断面図、第６図は本発
明により得られた柱材をユニットとして組立てられた柱
の使用状況を例示する斜視図、第７図は本発明により得
られた柱材の他の使用態様を例示する断面図、第８図、
第９図は従来の柱の仕口部を示す一部切欠正面図、第１
０図は従来の柱材の遠心鋳造方案を示す断面図である。
１：遠心鋳造鋳型、２：直管形成部、３：大径部、１０
：素管（遠心鋳造管）、１１：直管部、１２：厚肉大径
部、１３：テーパ部、２０：本発明の柱材、２１：厚肉
部、２５；テーバ部、４０：組立柱、４１：仕口部、４
２；梁、Ｗ：溶接部。
代理人 弁理士 宮崎新八部FIG. 1 is a partially cutaway front view schematically showing the shape of the column material obtained by the present invention, FIG. 2 is a partially cutaway front view of a centrifugally cast pipe used as a raw pipe in the present invention, and FIG. The figure is an axial cross-sectional view of the method of centrifugal casting of a blank pipe, FIG. FIG. 6 is a perspective view illustrating the usage of a column assembled as a unit from the column material obtained by the present invention, and FIG. 7 is a cross-sectional view of another column material obtained by the present invention. A sectional view illustrating the usage mode, FIG.
Figure 9 is a partially cutaway front view showing the joint part of a conventional column;
FIG. 0 is a sectional view showing a conventional centrifugal casting method for pillar materials. 1: Centrifugal casting mold, 2: Straight pipe forming part, 3: Large diameter part, 10
: Base pipe (centrifugally cast pipe), 11: Straight pipe section, 12: Thick-walled large-diameter section, 13: Tapered section, 20: Pillar material of the present invention, 21: Thick-walled section, 25: Tapered section, 40: Assembly Pillar, 41: Shiguchi part, 4
2: beam, W: welded part. Agent Patent Attorney Miyazaki Shinhachibe
Claims (1)
る厚肉大径部を有する遠心鋳造管を素管とし、その厚肉
大径部およびテーバ部を絞り加工することにより、全長
にわたって一定の外径を有し、一端側にテーバ部を介し
て、内方へ膨出する厚肉部を有する直円管に成形するこ
とを特徴とする柱材の製造方法。(1) A centrifugally cast tube having a thick walled large diameter section that bulges outward through a taper section on one end side of the straight pipe section is used as a blank tube, and the thick wall large diameter section and the tapered section are drawn. 1. A method for manufacturing a column material, comprising forming the column material into a right circular tube having a constant outer diameter over its entire length and having a thick walled portion bulging inward through a tapered portion on one end side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6453484A JPS60206546A (en) | 1984-03-30 | 1984-03-30 | Manufacture of pillar material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6453484A JPS60206546A (en) | 1984-03-30 | 1984-03-30 | Manufacture of pillar material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60206546A true JPS60206546A (en) | 1985-10-18 |
| JPH0518660B2 JPH0518660B2 (en) | 1993-03-12 |
Family
ID=13260981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6453484A Granted JPS60206546A (en) | 1984-03-30 | 1984-03-30 | Manufacture of pillar material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60206546A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01198953A (en) * | 1988-01-30 | 1989-08-10 | Akio Fujiwara | Hollow member for construction |
| JPH02104851A (en) * | 1988-10-12 | 1990-04-17 | Ohbayashi Corp | Cylindrical precast concrete member |
| JP2012232339A (en) * | 2011-05-06 | 2012-11-29 | Jie Pu | Production line of high temperature resisting alloy furnace pipe and pipe rack for petrochemical industry |
| JP2013068070A (en) * | 2011-09-07 | 2013-04-18 | Jfe Steel Corp | Steel pipe column structure and manufacturing method thereof |
| JP2020163395A (en) * | 2019-03-28 | 2020-10-08 | 株式会社栗本鐵工所 | Method for producing angled straight pipe |
-
1984
- 1984-03-30 JP JP6453484A patent/JPS60206546A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01198953A (en) * | 1988-01-30 | 1989-08-10 | Akio Fujiwara | Hollow member for construction |
| JPH02104851A (en) * | 1988-10-12 | 1990-04-17 | Ohbayashi Corp | Cylindrical precast concrete member |
| JP2012232339A (en) * | 2011-05-06 | 2012-11-29 | Jie Pu | Production line of high temperature resisting alloy furnace pipe and pipe rack for petrochemical industry |
| JP2013068070A (en) * | 2011-09-07 | 2013-04-18 | Jfe Steel Corp | Steel pipe column structure and manufacturing method thereof |
| JP2020163395A (en) * | 2019-03-28 | 2020-10-08 | 株式会社栗本鐵工所 | Method for producing angled straight pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0518660B2 (en) | 1993-03-12 |
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