JPH0477773B2 - - Google Patents
Info
- Publication number
- JPH0477773B2 JPH0477773B2 JP12579686A JP12579686A JPH0477773B2 JP H0477773 B2 JPH0477773 B2 JP H0477773B2 JP 12579686 A JP12579686 A JP 12579686A JP 12579686 A JP12579686 A JP 12579686A JP H0477773 B2 JPH0477773 B2 JP H0477773B2
- Authority
- JP
- Japan
- Prior art keywords
- bottom plate
- column
- concrete foundation
- fixing part
- fixed
- 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
- 230000037431 insertion Effects 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 9
- 239000004570 mortar (masonry) Substances 0.000 claims description 8
- 239000010953 base metal Substances 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 239000002184 metal Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000011440 grout Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Landscapes
- Joining Of Building Structures In Genera (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、土木建築構造物において、鉄骨柱が
固定されアンカーボルトによつてコンクリート基
礎に固定さる、柱脚用金物及びその固定構造に関
するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to metal fittings for column bases and their fixing structure, in which steel columns are fixed to concrete foundations with anchor bolts in civil engineering construction structures. It is.
土木建築構造物における鉄骨柱（以下柱とい
う）は、一般にコンクリート基礎上に建てられる
ことが多い。この場合、柱の材料強度はコンクリ
ート基礎のそれに比べて10倍以上も大きいので、
柱に生じた応力をコンクリート基礎に分散して伝
達するため、柱の下端部が固定された柱脚用金物
をアンカーボルトによりコンクリート基礎に固定
するようにしている。
Steel columns (hereinafter referred to as columns) in civil engineering and architectural structures are generally built on concrete foundations. In this case, the material strength of the column is more than 10 times greater than that of the concrete foundation, so
In order to disperse and transmit the stress generated in the columns to the concrete foundation, the column base hardware, to which the lower end of the column is fixed, is fixed to the concrete foundation using anchor bolts.
このような柱脚用金物には各種のものが提案さ
れ実用に供されているが、その一例として実公昭
56−30425号公報に開示された発明がある。この
発明は第６図及び第７図に示すように、方形の底
板２の上面に柱６の断面形状よりやゝ大きい突出
部３を設けると共に、底板２にアンカーボルトに
挿通するための穴５を有する台座４を設けたのも
のである。 Various types of metal fittings for pillar bases have been proposed and put into practical use; one example is the
There is an invention disclosed in Publication No. 56-30425. As shown in FIGS. 6 and 7, this invention provides a protrusion 3 on the upper surface of a rectangular bottom plate 2 that is slightly larger than the cross-sectional shape of the column 6, and a hole 5 in the bottom plate 2 for inserting an anchor bolt. A pedestal 4 is provided.
上記の柱脚金物１は、工場等において突出部３
の上端部外周と柱６の下端部とを溶接７し、両者
を一体に固定して工場現場に運搬し、柱脚用金物
１の台座４に設けた穴５をコンクリート基礎に植
設したアンカーボルト８に挿通してナツトで固定
するようにしたものである。 The above-mentioned column base metal fittings 1 are installed at the protruding portion 3 in a factory or the like.
The outer periphery of the upper end and the lower end of the column 6 are welded 7, and both are fixed together and transported to the factory site, and the hole 5 made in the pedestal 4 of the column base hardware 1 is planted in the concrete foundation. It is inserted into the bolt 8 and fixed with a nut.
周知のように、土木建築構造物の柱には、軸方
向圧縮力と曲げ（転倒）モーメント及びせん断力
の３つの応力が生じるが、この中でも通常のビル
においては曲げモーメントが支配的である。この
ため、曲げモーメントに抵抗するアンカーボルト
はできるだけ柱脚用金物１の外側、すなわち突出
部３から離れた位置に取付けることが必要であ
る。しかしながら、アンカーボルトを突出部３か
ら離れた位置に取付けるためにはそれだけ底板２
を大きくしなければならず、かつ上記のような柱
脚用金物１は型鍛造又は鋳造によつて制作される
場合が多いため、底板２の大形化と相俟つて重量
が大となり取扱が面倒であるばかりでなく材料費
も嵩むため高価になる。さらに、底板２を大きく
すると、柱脚用金物１を敷地ぎりぎりに設置して
も柱６は境界線から離れて内側になり、このため
敷地を有効に利用できない等、多くの問題があ
る。
As is well known, three types of stress occur in columns of civil engineering and architectural structures: axial compressive force, bending (overturning) moment, and shear force, among which bending moment is predominant in ordinary buildings. For this reason, it is necessary to attach the anchor bolt that resists the bending moment to the outside of the column base hardware 1 as much as possible, that is, at a position as far away from the protrusion 3 as possible. However, in order to install the anchor bolt at a position away from the protrusion 3, the bottom plate 2 must be
must be made large, and the above-mentioned column base hardware 1 is often produced by die forging or casting, so together with the large size of the bottom plate 2, the weight becomes large and it is difficult to handle. Not only is it troublesome, but the material costs also increase, making it expensive. Furthermore, if the bottom plate 2 is made larger, even if the column base hardware 1 is installed at the very edge of the site, the columns 6 will move away from the boundary line and become inward, resulting in many problems such as the inability to utilize the site effectively.
本発明は、上記のような問題点を解決するため
になされたもので、
底板に上部が柱の外形に対応した形状にされ下
部が該上部より小さく形成された断面ほゞ逆台形
状の柱固定部の下部を固着すると共に、前記柱固
定部の固着部内側において前記底板に穴を設け、
前記底板と柱固定部との間に複数のリブを設ける
と共に前記底板にアンカーボルトに挿通する複数
の挿通穴を設けてなる柱脚用金物。及び
底板に上部が柱の外形に対応した形状に形成さ
れ下部が該上部より小さく形成された断面ほゞ逆
台形状の柱固定部の下部を固着すると共に、前記
柱固定部の固着部内側において前記底板に穴を設
け、前記底板と柱固定部との間に複数のリブを設
けると共に前記底板にコンクリート基礎に埋込ま
れたアンカーボルトに挿通する複数の挿通穴を設
けてなる柱脚用金物を有し、該柱脚用金物をスペ
ーサ等を介してコンクリート基礎上に配設して前
記各挿通穴にアンカーボルトを挿通して固定する
と共に、前記底板に設けた穴を介して柱固定部内
に前記アンカーボルトの内側においてコンクリー
ト基礎に埋込まれた内部アンカーボルトを挿入
し、前記コンクリート基礎と柱脚用金物の底板と
の間及び柱固定部内にモルタル等を充填してなる
柱脚用金物の固定構造を提供するものである。
The present invention has been made in order to solve the above-mentioned problems, and includes a column having an approximately inverted trapezoidal cross section in which the bottom plate has an upper part shaped to correspond to the outer shape of the column and a lower part smaller than the upper part. fixing a lower part of the fixing part and providing a hole in the bottom plate inside the fixing part of the column fixing part;
A metal fitting for a column base, wherein a plurality of ribs are provided between the bottom plate and the column fixing part, and a plurality of insertion holes through which anchor bolts are inserted are provided in the bottom plate. and fixing to the bottom plate a lower part of a column fixing part having an approximately inverted trapezoidal cross-section, the upper part of which is formed in a shape corresponding to the outer shape of the column and the lower part of which is smaller than the upper part; Column base hardware comprising: a hole provided in the bottom plate; a plurality of ribs provided between the bottom plate and the column fixing portion; and a plurality of insertion holes provided in the bottom plate through which anchor bolts embedded in the concrete foundation are inserted. The column base hardware is installed on the concrete foundation via a spacer etc., and the anchor bolts are inserted into each of the insertion holes to fix it, and the metal fittings are inserted into the column fixing part through the holes provided in the bottom plate. An internal anchor bolt embedded in the concrete foundation is inserted inside the anchor bolt, and mortar or the like is filled between the concrete foundation and the bottom plate of the column base hardware and into the column fixing part. This provides a fixed structure.
本発明の柱脚用金物は、底板に設けた嵌合穴に
各アンカーボルトを挿通すると共に、柱固定部内
に内部アンカーボルトを挿入してこれらをモルタ
ル等で一体に固定する。
In the column base hardware of the present invention, each anchor bolt is inserted into a fitting hole provided in a bottom plate, and an internal anchor bolt is inserted into a column fixing portion, and these are fixed together with mortar or the like.
第１図は本発明に係る柱脚用金物の実施例の平
面図、第２図はそのＡ−Ａ断面図である。両図に
おいて、１１は鋼板からなる底板、１２は上部が
これに固定される角管状の柱の外形に対応した角
形形状で、下部がこれより小さい角形形状に形成
された断面ほゞ逆台形状の柱固定部で、下端部は
底板１１に溶接等により固定されている。１３は
柱固定部１２の下端部形状に対応して底板１１に
貫設された穴である。１４は底板１１と柱固定部
１２との間に固定された多数のリブで、両者を補
強するためのものである。１５は底板１１とリブ
１４の間に設けられたアンカーボルトへの挿通穴
である。
FIG. 1 is a plan view of an embodiment of a metal fitting for a column base according to the present invention, and FIG. 2 is a sectional view thereof taken along line A-A. In both figures, 11 is a bottom plate made of a steel plate, 12 is a rectangular shape whose upper part corresponds to the outer shape of the rectangular tubular column to which it is fixed, and whose lower part is formed into a smaller rectangular shape and whose cross section is approximately an inverted trapezoidal shape. The lower end of the pillar fixing part is fixed to the bottom plate 11 by welding or the like. A hole 13 is formed through the bottom plate 11 in accordance with the shape of the lower end of the column fixing part 12. Reference numeral 14 indicates a large number of ribs fixed between the bottom plate 11 and the column fixing part 12, and is for reinforcing both. Reference numeral 15 indicates a hole through which an anchor bolt is inserted, which is provided between the bottom plate 11 and the rib 14.
第３図は本発明に係る柱脚用金物１０のコンク
リート基礎への取付け構造の一例を示す断面図
で、第１図、第２図と同じ部分には同じ符号を付
してある。１９は柱脚用金物１０の各挿通穴１５
に対応してコンクリート基礎２０に埋込まれたア
ンカーボルトで、図には２本だけ示してある。２
１は柱脚用金物１０の穴１３に対応してコンクリ
ート基礎２０に埋込まれたヘツド付の内部アンカ
ーボルトで、図には２本示してあるが、１本以上
であればよい。１７は柱固定部１２の上端部に溶
接によつて固定された柱、１８は柱１７の下部に
設けたモルタル等の注入穴である。 FIG. 3 is a sectional view showing an example of the structure for attaching the column base hardware 10 to a concrete foundation according to the present invention, and the same parts as in FIGS. 1 and 2 are given the same reference numerals. 19 is each insertion hole 15 of the metal fitting 10 for the column base.
These are anchor bolts embedded in the concrete foundation 20 corresponding to the above, and only two are shown in the figure. 2
Reference numeral 1 denotes an internal anchor bolt with a head embedded in the concrete foundation 20 corresponding to the hole 13 of the column base hardware 10. Two anchor bolts 1 are shown in the figure, but one or more may be used. 17 is a column fixed to the upper end of the column fixing part 12 by welding, and 18 is a hole for pouring mortar or the like provided at the lower part of the column 17.
いま、コンクリート基礎２０上に、スペーサ、
楔等を介して一定の距離を隔てゝ柱１７が固定さ
れた柱脚用金物１０を配置し、底板１１に設けた
各挿通穴１５をそれぞれアンカーボルト１９に挿
通すると共に、穴１３に内部アンカーボルト２１
に挿入する。この状態で柱脚用金物１０の位置及
びレベルを調整し、アンカーボルト１９のナツト
を締めて固定する。 Now, on the concrete foundation 20, spacers,
The pillar base metal fittings 10 to which the pillars 17 are fixed are placed at a certain distance via wedges or the like, and the anchor bolts 19 are inserted through the respective insertion holes 15 provided in the bottom plate 11, and internal anchors are inserted into the holes 13. bolt 21
Insert into. In this state, the position and level of the column base hardware 10 are adjusted, and the nuts of the anchor bolts 19 are tightened and fixed.
次に柱１７に設けた穴１８から、コンクリート
基礎２０と底板１１との間及び柱取付部１２内に
グラウトモルタル等２２を注入してこれらの空間
に充填し、柱脚用金物１０をアンカーボルト１
９、内部アンカーボルト２１と共に、コンクリー
ト基礎２０に強固に固定する。 Next, grout mortar or the like 22 is injected into the space between the concrete foundation 20 and the bottom plate 11 and into the column attachment part 12 through the hole 18 made in the column 17 to fill these spaces, and the column base hardware 10 is attached to the anchor bolt. 1
9. Firmly fix to the concrete foundation 20 together with the internal anchor bolt 21.
本発明に係る柱脚用金物１０は、上記のように
多数のアンカーボルト１９及び柱固定部１２内に
突出したヘツド付内部アンカーボルト２１によつ
て固定されており、かつ、柱固定部１２の下部を
上部より小さく形成してので、内部に充填したグ
ラウトモルタル等２２が三軸圧縮状態となつて強
度を増し、内部アンカーボルト２１の効果を一層
増大させて剛性を高めることができる。 The column base hardware 10 according to the present invention is fixed by a large number of anchor bolts 19 and the internal anchor bolts 21 with heads protruding into the column fixing part 12 as described above, and Since the lower part is formed smaller than the upper part, the grout mortar etc. 22 filled inside becomes triaxially compressed, increasing the strength, further increasing the effect of the internal anchor bolt 21, and increasing the rigidity.
第４図は本発明の他の実施例を示すもので、本
実施例では底板１１を厚くすると共に、柱固定部
１２の下部を厚くし上部を薄くして、上下方向に
おける断面係数がほぼ等しくなるように鋳造等に
より構成したものである。 FIG. 4 shows another embodiment of the present invention. In this embodiment, the bottom plate 11 is made thicker, the lower part of the column fixing part 12 is made thicker, and the upper part is made thinner, so that the section modulus in the vertical direction is almost equal. It is constructed by casting etc. so that
また、第３図の例では、内部アンカーボルト２
１をコンクリート基礎２０に埋込んだ場合を示し
たが、第５図に示すように、有底截頭円錘状の部
材２４の下面に多数の異形鉄筋、ヘツド付きアン
カーボルト等を固着した固定部材２３内に、少く
とも上部にヘツドを備えた複数本のアンカーボル
ト２１ａをその上部が部材２４から突出するよう
に固着し、これをコンクリート基礎２０の柱脚用
金物１０の穴１３の真下に埋込んで、内部アンカ
ーボルト２１ａを柱脚用金物１０の柱固定部１２
内に突出させるようにしたものである。このよう
に構成することにより、内部アンカーボルト２１
ａの強度を増すと共に、その長さを短くすること
ができる。 In addition, in the example shown in Fig. 3, the internal anchor bolt 2
1 is embedded in a concrete foundation 20, but as shown in FIG. A plurality of anchor bolts 21a each having a head at least on the upper part are fixed in the member 23 so that the upper part thereof protrudes from the member 24, and these are placed directly under the hole 13 of the column base hardware 10 of the concrete foundation 20. embed the internal anchor bolt 21a in the column fixing part 12 of the column base hardware 10.
It is made to protrude inward. With this configuration, the internal anchor bolt 21
It is possible to increase the strength of a and shorten its length.
上記の説明では、柱脚用金物１０に設けた柱固
定部１２は上下とも四角形に形成した場合を示し
たが、上部は柱１７の形状の対応させることが必
要であるけれども、下部は四角形以上の多角形、
円形等にしてもよく、またリブ１４、嵌合穴１５
の位置や数も適宜変更することができる。 In the above explanation, the case where the column fixing part 12 provided on the column base hardware 10 is formed into a rectangular shape at both the top and bottom is shown, but although the upper part needs to correspond to the shape of the column 17, the lower part is more than square. polygon,
It may be circular, etc., and the ribs 14 and the fitting holes 15
The position and number of can also be changed as appropriate.
上記の説明から明らかなように、本発明によれ
ば柱脚用金物を小形かつ軽量化することができ、
また、材料費を節減できるばかりでなく、底板を
小さくできるので、これに固定する柱を境界線に
近接させることが可能となり、敷地面積を有効に
利用することができる。また柱を固定する柱固定
部の下端部を上部より小さく形成し、この中に内
部アンカーボルトを配置してグラウトモルタル等
を充填したので、三軸圧縮効果により外部アンカ
ーボルトと相俟つて柱脚用金物をコンクリート基
礎に強固に固定することができる等、実施による
効果顕著である。
As is clear from the above description, according to the present invention, the hardware for column bases can be made smaller and lighter.
In addition, not only can material costs be reduced, but the bottom plate can be made smaller, making it possible to place the pillars fixed to it closer to the boundary line, making it possible to use the site area more effectively. In addition, the lower end of the column fixing part that fixes the column is made smaller than the upper part, and internal anchor bolts are placed inside this part and filled with grout mortar, etc., so that the column base can be fixed together with the external anchor bolts due to the triaxial compression effect. The effects of implementation are significant, such as being able to securely fix hardware to concrete foundations.
第１図は本発明実施例の平面図、第２図はその
Ａ−Ａ断面図、第３図は本発明に係る柱脚用金物
の固定状態の一例を示す断面図、第４図は本発明
の他の実施例の縦断面図、第５図は第３図に示さ
れた発明に実施することのできる固定部材の一例
の斜視図、第６図は従来の柱脚用金物の一例を示
す平面図、第７図は一部を断面で示したその正面
図である。
１０……柱脚用金物、１１……底板、１２……
柱固定部、１３……穴、１４……リブ、１５……
アンカーボルトの挿通穴、１７……柱、１９……
アンカーボルト、２０……コンクリート基礎、２
１，２１ａ……内部アンカーボルト、２２……グ
ラウトモルタル等、２３……固定部材。
FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line A-A, FIG. FIG. 5 is a longitudinal sectional view of another embodiment of the invention, FIG. 5 is a perspective view of an example of a fixing member that can be implemented in the invention shown in FIG. The plan view shown in FIG. 7 is a partially sectional front view. 10... Hardware for column base, 11... Bottom plate, 12...
Pillar fixing part, 13... hole, 14... rib, 15...
Anchor bolt insertion hole, 17... Pillar, 19...
Anchor bolt, 20... Concrete foundation, 2
1, 21a... Internal anchor bolt, 22... Grout mortar, etc., 23... Fixing member.
Claims (1)
状にされ下部が該上部より小さく形成された断面
ほゞ逆台形状の柱固定部１２の下部を固着すると
共に、前記柱固定部１２の固着部内側において前
記底板１１に穴１３を設け、前記底板１１と柱固
定部１２との間に複数のリブ１４を設けると共に
前記底板１１にアンカーボルト１９に挿通する複
数の挿通穴１５を設けてなる柱脚用金物。 ２ 底板１１に上部が柱１７の外形に対応した形
状に形成され下部が該上部より小さく形成された
断面ほゞ逆台形状の柱固定部１２の下部を固着す
ると共に、前記柱固定部１２の固着部内側におい
て前記底板１１に穴１３を設け、前記底板１１と
柱固定部１２との間に複数のリブ１４を設けると
共に前記底板１１にコンクリート基礎２０に埋込
まれたアンカーボルト１９に挿通する複数の挿通
穴１５を設けてなる柱脚用金物１０を有し、該柱
脚用金物１０をスペーサ等を介してコンクリート
基礎２０上に配設して前記各挿通穴１５にアンカ
ーボルト１９を挿通して固定すると共に、前記底
板１１に設けた穴１３を介して柱固定部１２内に
前記アンカーボルト１９の内側においてコンクリ
ート基礎２０に埋込まれた内部アンカーボルト２
１を挿入し、前記コンクリート基礎２０と柱脚用
金物１０の底板１１との間及び柱固定部１２内に
モルタル等２２を充填してなる柱脚用金物の固定
構造。[Scope of Claims] 1. A lower part of a pillar fixing part 12 having an approximately inverted trapezoidal cross section, the upper part of which has a shape corresponding to the outer shape of the pillar 17 and the lower part of which is smaller than the upper part, is fixed to the bottom plate 11; A hole 13 is provided in the bottom plate 11 on the inside of the fixed portion of the column fixing portion 12, a plurality of ribs 14 are provided between the bottom plate 11 and the column fixing portion 12, and a plurality of insertion holes are provided in the bottom plate 11 through which anchor bolts 19 are inserted. Column base hardware with holes 15. 2. A lower part of a column fixing part 12 having an approximately inverted trapezoidal cross section, the upper part of which is formed in a shape corresponding to the outer shape of the column 17 and the lower part of which is smaller than the upper part, is fixed to the bottom plate 11, and the column fixing part 12 is Holes 13 are provided in the bottom plate 11 on the inside of the fixed part, and a plurality of ribs 14 are provided between the bottom plate 11 and the column fixing part 12, and anchor bolts 19 embedded in the concrete foundation 20 are inserted into the bottom plate 11. It has a column base metal fitting 10 having a plurality of insertion holes 15, and the column base metal fitting 10 is placed on a concrete foundation 20 via a spacer or the like, and an anchor bolt 19 is inserted into each of the insertion holes 15. An internal anchor bolt 2 embedded in the concrete foundation 20 inside the anchor bolt 19 is inserted into the column fixing part 12 through the hole 13 provided in the bottom plate 11.
1 is inserted, and mortar or the like 22 is filled between the concrete foundation 20 and the bottom plate 11 of the column base hardware 10 and within the column fixing part 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12579686A JPS62284846A (en) | 1986-06-02 | 1986-06-02 | Metal fitting for column base and fixing structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12579686A JPS62284846A (en) | 1986-06-02 | 1986-06-02 | Metal fitting for column base and fixing structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62284846A JPS62284846A (en) | 1987-12-10 |
| JPH0477773B2 true JPH0477773B2 (en) | 1992-12-09 |
Family
ID=14919097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12579686A Granted JPS62284846A (en) | 1986-06-02 | 1986-06-02 | Metal fitting for column base and fixing structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62284846A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010059626A (en) * | 2008-09-01 | 2010-03-18 | Nippon Steel Corp | Square steel tube member |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2532767Y2 (en) * | 1990-02-05 | 1997-04-16 | 積水ハウス株式会社 | Pillar |
| JP5239649B2 (en) * | 2008-09-01 | 2013-07-17 | 新日鐵住金株式会社 | Square steel pipe member for column |
-
1986
- 1986-06-02 JP JP12579686A patent/JPS62284846A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010059626A (en) * | 2008-09-01 | 2010-03-18 | Nippon Steel Corp | Square steel tube member |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62284846A (en) | 1987-12-10 |
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