JP2614000B2 - Basics of steel frame - Google Patents

Basics of steel frame

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Publication number
JP2614000B2
JP2614000B2 JP4218462A JP21846292A JP2614000B2 JP 2614000 B2 JP2614000 B2 JP 2614000B2 JP 4218462 A JP4218462 A JP 4218462A JP 21846292 A JP21846292 A JP 21846292A JP 2614000 B2 JP2614000 B2 JP 2614000B2
Authority
JP
Japan
Prior art keywords
foundation
column
base
reinforcing
reinforcement
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
Application number
JP4218462A
Other languages
Japanese (ja)
Other versions
JPH0641979A (en
Inventor
大洋 木下
賢二 古海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daiwa House Industry Co Ltd
Original Assignee
Daiwa House Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daiwa House Industry Co Ltd filed Critical Daiwa House Industry Co Ltd
Priority to JP4218462A priority Critical patent/JP2614000B2/en
Publication of JPH0641979A publication Critical patent/JPH0641979A/en
Application granted granted Critical
Publication of JP2614000B2 publication Critical patent/JP2614000B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】この発明は、中高層の住宅その他
の建物等における鉄骨架構の基礎に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foundation for a steel frame in a middle-to-high-rise house or other building.

【0002】[0002]

【従来の技術】従来、鉄骨架構における柱脚の固定構造
として、図5に示すように柱52を基礎51の中へ埋め
込む構造、または図6に示すように柱脚部に根巻コンク
リート65を設ける構造が一般に採用されている。
2. Description of the Related Art Conventionally, as a fixing structure of a column base in a steel frame structure, a structure in which a column 52 is embedded in a foundation 51 as shown in FIG. The structure provided is generally adopted.

【0003】図5の例は、独立基礎51のベース部51
aを先に打ち、その上に柱52を建てて、柱52の根巻
配筋53および地中梁54の配筋(図示せず)を施した
後に、基礎上部51bのコンクリート、および地中梁5
4のコンクリートを打設したものである。図6の例は、
独立基礎61および地中梁64の工事を完了した後に、
柱62を建てた構造である。柱62には根巻配筋63を
施し、根巻コンクリート65を後打ちする。何れの例に
おいても、柱脚には柱52,62の固定を確実にするた
めのスタッドボルト56,66が多数設けられる。5
7,67はベースプレート、58,68はアンカーボル
トを各々示す。
FIG. 5 shows an example of a base portion 51 of an independent foundation 51.
a, first, a pillar 52 is erected thereon, and a reinforcement of the base winding 53 of the pillar 52 and a reinforcement of the underground beam 54 (not shown) are given. Beam 5
No. 4 concrete was cast. The example in FIG.
After completing the construction of the independent foundation 61 and the underground beam 64,
It is a structure in which a pillar 62 is built. The column 62 is provided with a root winding arrangement 63, and a root winding concrete 65 is post-punched. In any of the examples, the column base is provided with a large number of stud bolts 56, 66 for ensuring the fixing of the columns 52, 62. 5
Reference numerals 7 and 67 denote base plates, and 58 and 68 denote anchor bolts.

【0004】[0004]

【発明が解決しようとする課題】これら図5および図6
の従来例は、何れも地中梁54,64の配筋を行うにつ
き、その位置決めに柱52,62を利用することはでき
ず、配筋作業に手間がかかるうえ、熟練した鉄筋工が必
要になる。しかも、柱52,62の堅固な固定のために
は、多数のスタッドボルト56,66を打つことが必要
になり、これらのために施工時間が長くなる。また、図
5の例では、柱52と地中梁54との取り合い部で、地
中梁54の配筋と根巻配筋53やスタッドボルト56等
が入り混じって煩雑となり、より一層配筋作業が難しく
なる。
FIG. 5 and FIG.
In the prior art, the underlaying beams 54, 64 are both arranged, and the pillars 52, 62 cannot be used for the positioning. become. Moreover, in order to firmly fix the columns 52 and 62, it is necessary to hit a large number of stud bolts 56 and 66, and the construction time becomes long. Further, in the example of FIG. 5, the reinforcement of the underground beam 54, the root winding reinforcement 53, the stud bolt 56, and the like are mixed in the joint portion between the column 52 and the underground beam 54, which makes the arrangement more complicated. Work becomes difficult.

【0005】さらに、図6の例の場合は、基礎工事の終
了後に柱62を建てるので、工期の短縮のためには、基
礎工事に人工数を一度に多く投入して基礎工事を早く終
わらせる必要があり、鉄筋工や型枠工の手配が難しい。
しかも、床面レベルFLよりも上方で、柱脚部の周囲に
根巻コンクリート65が突出するため、この突出部分が
室内にへの突出部となったり、壁材等の設置の邪魔にな
ることがある。
Further, in the case of the example shown in FIG. 6, since the pillar 62 is erected after the completion of the foundation work, in order to shorten the construction period, a large number of man-hours are put into the foundation work at one time to finish the foundation work earlier. It is necessary to arrange reinforcement and formwork.
Moreover, since the root-moulding concrete 65 protrudes around the column base above the floor level FL, this protruding portion becomes a protruding portion into the room or hinders installation of wall materials and the like. There is.

【0006】この発明の目的は、配筋作業が簡単に行
え、かつスタッドボルトを要せずに柱脚の堅固な固定が
行えて、省力化、工期の短縮が図れ、さらに基礎工事で
の人工数を一度に多く投入することが不要な鉄骨架構の
基礎を提供することである。
SUMMARY OF THE INVENTION It is an object of the present invention to easily perform bar arrangement work and to firmly fix a column pedestal without the need for stud bolts, thereby saving labor and shortening the construction period, and further improving the man-hour in foundation work. The purpose is to provide a foundation for a steel frame that does not require a large number of inputs at once.

【0007】[0007]

【課題を解決するための手段】この発明の基礎は、鉄骨
架構の角形鋼管からなる柱を独立基礎のベース部上に建
て、その柱脚における上部の外面に、アングル材からな
る補強板を各々隅部に配置して重ね、隣合う両補強板に
またがってその外面にT形の鉄筋接合金物を重ね、この
鉄筋接合金物を前記補強板と共に前記柱脚にボルト接合
し、この鉄筋接合金物に鉄筋コンクリート基礎梁の上側
の主筋となる配筋をボルト接合し、前記鉄筋コンクリー
ト基礎梁の下側の主筋となる配筋を前記柱脚の下端面に
設けられたベースプレートにボルト接合したものであ
る。前記独立基礎のベース部上には、柱脚をその周囲の
根巻配筋と共に埋め込む基礎上部コンクリートを設け
る。
According to the present invention, a column made of a square steel pipe of a steel frame is built on a base portion of an independent foundation, and an outer surface of an upper portion of the column base is made of an angle material.
The reinforcing plates are placed in the corners and stacked on each other, and
Overlap the T-shaped rebar joint metal on the outer surface,
Reinforcing metal fittings are bolted together with the reinforcing plate to the column base
And this reinforced joint metal fittings on the upper side of the reinforced concrete foundation beam
Bolts to the reinforcements that will be the main reinforcement of the
G Reinforcement that will be the main reinforcement below the foundation beam is attached to the lower end face of the column base.
It is bolted to the provided base plate . On the base portion of the independent foundation, there is provided a foundation upper concrete in which the column base is embedded together with the surrounding reinforcements.

【0008】[0008]

【作用】この構成によると、柱脚に設けた鉄筋接合金物
に、基礎梁の配筋の端部をボルト接合するので、基礎梁
配筋の端部が柱に対して位置決め状態に接合される。そ
のため基礎梁の配筋作業が簡単に行え、また基礎梁配筋
の工場におけるプレ配筋も可能になる。また、基礎梁配
筋を前記鉄筋接合金物で柱と接合するので、柱の固定が
堅固となり、柱脚部のスタッドボルトが省略できる。さ
らに、独立基礎のベース部の構築後に建方を行い、その
後に基礎の残り部分を構築することになるので、基礎工
事での人工数を一度に多く投入することが不要となる。
According to this configuration, the end of the reinforcing bar of the foundation beam is bolted to the reinforcing metal joint provided on the column base, so that the end of the reinforcing bar of the foundation beam is joined to the column in a positioning state. . Therefore, the reinforcement work of the foundation beams can be easily performed, and the pre-arrangement of the reinforcement beams in the factory can be performed. In addition, since the foundation beam reinforcement is joined to the column with the reinforcing metal joint, the column is firmly fixed, and the stud bolt at the column base can be omitted. Furthermore, since the erecting is performed after the construction of the base portion of the independent foundation, and then the rest of the foundation is constructed, it is not necessary to input a large number of man-hours in the foundation work at one time.

【0009】[0009]

【実施例】この発明の一実施例を図1ないし図4に基づ
いて説明する。鉄骨架構1は、住宅またはビル等の建物
の骨組みとなるものであり、角形鋼管からなる柱2をH
形鋼からなる梁3で接合したラーメン構造に構成され
る。柱2と梁3との接合は、柱2の周囲に設けた補強ア
ングル4とスプリットティー5とによるボルト接合とし
てある。鉄骨架構全体の基礎6は、各柱2に設けた独立
基礎7と、隣合う独立基礎7を接続する基礎梁である地
中梁8とで構成される。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. The steel frame 1 is a framework of a building such as a house or a building.
It has a rigid frame structure joined by beams 3 made of shaped steel. The joint between the column 2 and the beam 3 is a bolt joint with a reinforcing angle 4 and a split tee 5 provided around the column 2. The foundation 6 of the entire steel frame is composed of an independent foundation 7 provided on each column 2 and an underground beam 8 which is a foundation beam connecting adjacent independent foundations 7.

【0010】各独立基礎7は、基礎ベース部7aと、後
打ちの基礎上部コンクリート7b(図3,図4)とで構
成される。基礎ベース部7aは、杭(図示せず)上に打
設され、あるいは直接基礎とされ、内部にベース配筋
(図示せず)等が埋め込まれる。柱2は、基礎ベース部
7a上に建てられ、ベースプレート9が基礎ベース部7
aのアンカーボルト11に接合される。柱2の基礎埋め
込み部分の上部は、アングル材からなる4個の補強板1
2を4隅に配置して外面を囲み、その外面にT形の鉄筋
接合金物13を横向きに突出させて設けてある。これら
鉄筋接合金物13は、補強板12と共にワンサイドボル
ト20等で柱2に接合される。
Each independent foundation 7 is composed of a foundation base portion 7a and a later-cast upper foundation concrete 7b (FIGS. 3 and 4). The base base portion 7a is cast on a pile (not shown) or is directly used as a base, and a base reinforcing bar (not shown) or the like is embedded therein. The column 2 is built on the foundation base 7a, and the base plate 9 is
a to the anchor bolt 11. The upper part of the base embedded portion of the pillar 2 has four reinforcing plates 1 made of an angle material.
2 are arranged at four corners to surround the outer surface, and a T-shaped rebar joint metal fitting 13 is provided on the outer surface so as to protrude laterally. These reinforcing metal joints 13 are joined to the column 2 together with the reinforcing plate 12 by one-side bolts 20 or the like.

【0011】地中梁8は、上下の主筋14,15とスタ
ラップ16とを配筋してコンクリート21を打設した鉄
筋コンクリート梁であり、各主筋14,15の端部に
は、羽子板17,18が溶接される。これら羽子板1
7,18は、鉄筋接合金物13のウェブ上面およびベー
スプレート9の上面にボルト・ナット19で接合する。
なお、鉄筋接合金物13、ベースプレート9、および各
羽子板17,18には、所定位置に予めボルト挿通孔を
明けておく。
The underground beam 8 is a reinforced concrete beam in which concrete 21 is placed by arranging upper and lower main reinforcements 14 and 15 and stirrups 16, and feather plates 17 and 18 are provided at ends of the main reinforcements 14 and 15. Is welded. These feather boards 1
7 and 18 are joined to the upper surface of the web of the reinforcing metal joint 13 and the upper surface of the base plate 9 with bolts and nuts 19.
In addition, bolt insertion holes are formed in predetermined positions in the reinforcing metal fittings 13, the base plate 9, and each of the blade plates 17 and 18 in advance.

【0012】柱2の柱脚部の外周には、基礎ベース部7
aに予め埋め込んだ打継ぎ補強兼用の根巻縦筋22を立
ち上げ、その周囲に根巻フープ筋23を配筋する。これ
ら根巻筋22,23と共に、柱2の脚部を基礎上部コン
クリート7bに埋め込む。
On the outer periphery of the column base of the column 2, a base base 7
The root reinforcement 22 for joint reinforcement and reinforcement embedded in advance in a is raised, and the root hoop reinforcement 23 is arranged around the reinforcement. The leg portions of the column 2 are embedded in the foundation upper concrete 7b together with the root reinforcements 22 and 23.

【0013】図4は施工手順を示す。まず、同図(A)
の基礎ベース部7aを構築する。この場合、杭打ち後に
ベース配筋、根巻縦筋22、およびアンカーボルト11
をセットし、基礎コンクリートを打設することで基礎ベ
ース部7aを構築する。この基礎ベース部7a上に、
(B)のように柱2を建て、そのベースプレート9をア
ンカーボルト11にナットで締め付ける。柱2には、建
方前に予め工場等で補強板12および鉄筋接合金物13
を接合しておき、あるいは建方後に補強板12および鉄
筋接合金物13を接合する。
FIG. 4 shows a construction procedure. First, FIG.
Is constructed. In this case, the base reinforcement, the root winding longitudinal reinforcement 22, and the anchor bolt 11
Is set, and foundation concrete is cast to construct the foundation base portion 7a. On this basic base part 7a,
As shown in (B), the pillar 2 is built, and the base plate 9 is fastened to the anchor bolt 11 with a nut. The pillar 2 is provided with a reinforcing plate 12 and a reinforcing metal joint 13 at a factory or the like before building.
Or the reinforcing plate 12 and the reinforcing metal joint 13 are joined after construction.

【0014】この鉄筋接合金物13に、同図(C)のよ
うに地中梁8の主筋14の羽子板17(図2)をボルト
止めし、下側の主筋15の羽子板18をベースプレート
9にボルト止めする。また、柱2の周囲に根巻フープ筋
23を配筋する。なお、地中梁8の主筋14,15とス
タラップ16とは、工場等でプレ配筋しておくことが望
ましい。このように配筋が終わった後、基礎上部コンク
リート7bと地中梁8の基礎コンクリート21とを打設
し、同図(D)のように独立基礎7と地中梁8とでなる
基礎が構築される。
As shown in FIG. 2C, the blade 17 (FIG. 2) of the main bar 14 of the underground beam 8 is bolted to the reinforcing metal fitting 13, and the blade 18 of the lower main bar 15 is bolted to the base plate 9. Stop it. In addition, root winding hoops 23 are arranged around the pillar 2. It is desirable that the main reinforcements 14 and 15 of the underground beam 8 and the stirrup 16 be prearranged at a factory or the like. After the reinforcing arrangement is completed in this way, the foundation upper concrete 7b and the foundation concrete 21 of the underground beam 8 are cast, and the foundation composed of the independent foundation 7 and the underground beam 8 as shown in FIG. Be built.

【0015】この構成の基礎によると、独立基礎7のベ
ース部7aの構築後に柱2の建方を行い、その後に基礎
6の残り部分を構築することになるため、基礎工事での
人工数を一度に多く投入しなくても良く、鉄筋工や型枠
工の手配が行い易い。また、柱2に鉄筋接合金物13を
介して地中梁8の主筋14,15をボルト接合するの
で、配筋が行い易く、施工が簡単である。しかも、地中
梁8の配筋がシンプルな構成となり、地中梁8の型枠の
加工や組立も簡単になる。また、柱2に地中梁8の主筋
14,15を接合するため、スタッドボルトを打つこと
なく柱脚部の堅固な固定が行え、これによっても施工性
が良くなる。
According to the foundation of this configuration, the pillar 2 is constructed after the construction of the base portion 7a of the independent foundation 7, and then the rest of the foundation 6 is constructed. It is not necessary to put in many at once, and it is easy to arrange reinforcement and formwork. Further, since the main reinforcements 14 and 15 of the underground beam 8 are bolted to the column 2 via the reinforcing metal fittings 13, the arrangement of the reinforcements is easy and the construction is simple. In addition, the reinforcement of the underground beam 8 has a simple configuration, and the processing and assembly of the formwork of the underground beam 8 are also simplified. In addition, since the main reinforcements 14 and 15 of the underground beam 8 are joined to the column 2, the column base can be firmly fixed without hitting stud bolts, thereby improving workability.

【0016】さらに、柱2に設けた鉄筋接合金物13と
取り合うため、地中梁8の配筋14〜16をプレ配筋で
き、工場で加工することができる。そのため、現場での
省力化が図れ、かつ配筋作業に熟練した鉄筋工を必要と
しない。また、プレ配筋の場合、鉄骨建方時にセットす
ることが可能であり、そのセット作業には鉄筋工を必要
としない。そのため、鉄筋工の不足ぎみとなっている現
状に対処できる。この基礎によると、これらの種々の利
点により省力化が図れ、工期短縮につながる。
Further, since the reinforcements 14 and 16 of the underground beam 8 can be pre-arranged because they are engaged with the reinforcing metal fittings 13 provided on the columns 2, they can be processed at a factory. For this reason, labor saving at the site can be achieved, and a skilled rebar builder is not required for the rebar arrangement work. Also, in the case of pre-arrangement, it is possible to set the steel bar at the time of steel construction, and no reinforcing bar is required for the setting work. For this reason, it is possible to cope with the current situation in which there is a shortage of reinforced works. According to this foundation, labor saving can be achieved by these various advantages, leading to a shortened construction period.

【0017】なお、前記実施例では地中梁8のコンクリ
ート打設を現場で行うようにしたが、地中梁8は予めコ
ンクリートを打ってプレキャスト化しておいても良い。
また、鉄筋接合金物13は図示の例に限らず、種々の構
成のものが使用できる。
In the above-described embodiment, the concrete placement of the underground beam 8 is performed on site. However, the underground beam 8 may be precast by casting concrete in advance.
Further, the reinforcing metal joint 13 is not limited to the illustrated example, and various structures can be used.

【0018】[0018]

【発明の効果】この発明の鉄骨架構の基礎は、柱に設け
た鉄筋接合金物に基礎梁の配筋をボルト接合するので、
基礎梁の配筋作業が簡単になる。しかも、基礎梁の配筋
を柱と接合するので、柱の固定が堅固となり、柱脚部の
スタッドボルトが省略できる。これらのため省力化が図
れ、工期の短縮につながる。また、独立基礎のベース部
の構築後に建方を行い、その後に基礎の残り部分を構築
することになるため、基礎工事での人工数を一度に多く
投入することが不要となり、鉄筋工や型枠工の手配が容
易となる。
The foundation of the steel frame according to the present invention is formed by connecting the reinforcing bars of the foundation beam to the reinforcing metal joints provided on the columns by bolts.
Reinforcement work of the foundation beam is simplified. In addition, since the reinforcement of the foundation beam is joined to the column, the column is firmly fixed, and the stud bolt of the column base can be omitted. For these reasons, labor can be saved and the construction period can be shortened. In addition, since the erecting is performed after the construction of the base part of the independent foundation, and then the rest of the foundation is constructed, it is not necessary to input a large number of man-hours in the foundation work at once, Arrangement of framing work becomes easy.

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

【図1】この発明の一実施例にかかる基礎および鉄骨架
構の斜視図である。
FIG. 1 is a perspective view of a foundation and a steel frame according to an embodiment of the present invention.

【図2】その基礎の部分拡大破断斜視図である。FIG. 2 is a partially enlarged cutaway perspective view of the foundation.

【図3】同基礎の部分側面図である。FIG. 3 is a partial side view of the same foundation.

【図4】同じくその工程説明図である。FIG. 4 is also a process explanatory view of the same.

【図5】従来例の断面図である。FIG. 5 is a sectional view of a conventional example.

【図6】他の従来例の断面図である。FIG. 6 is a sectional view of another conventional example.

【符号の説明】[Explanation of symbols]

1…鉄骨架構、2…柱、3…梁、6…基礎、7…独立基
礎、7a…ベース部、7b…基礎上部コンクリート、8
…地中梁、9…ベースプレート、11…アンカーボル
ト、12…補強板、13…鉄筋接合金物、14,15…
地中梁の主筋、22…根巻縦筋、23…根巻フープ筋
DESCRIPTION OF SYMBOLS 1 ... Steel frame, 2 ... Column, 3 ... Beam, 6 ... Foundation, 7 ... Independent foundation, 7a ... Base part, 7b ... Foundation upper concrete, 8
... Underground beam, 9 ... Base plate, 11 ... Anchor bolt, 12 ... Reinforcement plate, 13 ... Reinforcing metal fittings, 14, 15 ...
The main reinforcement of the underground beam, 22 ... vertical root winding, 23 ... hoop hoop

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 鉄骨架構の角形鋼管からなる柱を独立基
礎のベース部上に建て、その柱脚における上部の外面
に、アングル材からなる補強板を各々隅部に配置して重
ね、隣合う両補強板にまたがってその外面にT形の鉄筋
接合金物を重ね、この鉄筋接合金物を前記補強板と共に
前記柱脚にボルト接合し、この鉄筋接合金物に鉄筋コン
クリート基礎梁の上側の主筋となる配筋をボルト接合
し、前記鉄筋コンクリート基礎梁の下側の主筋となる配
筋を前記柱脚の下端面に設けられたベースプレートにボ
ルト接合し、前記独立基礎のベース部上に、前記柱脚お
よびこの柱脚周囲の根巻配筋を埋め込んだ基礎上部コン
クリートを設けた鉄骨架構の基礎。
1. A column made of a square steel pipe of a steel frame is erected on a base portion of an independent foundation, and an upper outer surface of the column base is provided.
In addition, reinforcing plates made of angle materials are
You know, T-shaped rebar on the outer surface over both adjacent reinforcing plates
Lay the metal joints, and put this reinforcing metal joint together with the reinforcing plate.
Bolted to the column pedestal, and bolted to the reinforcing bar as the main reinforcement on the upper side of the reinforced concrete foundation beam
And the main reinforcement below the reinforced concrete foundation beam
Connect the streaks to the base plate provided on the lower end face of the column base.
And belt joint, before SL on the base portion of the independent basic, the column base and foundation of the column base steel frames in which a foundation upper concrete embedded Nemaki reinforcement around.
JP4218462A 1992-07-24 1992-07-24 Basics of steel frame Expired - Lifetime JP2614000B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4218462A JP2614000B2 (en) 1992-07-24 1992-07-24 Basics of steel frame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4218462A JP2614000B2 (en) 1992-07-24 1992-07-24 Basics of steel frame

Publications (2)

Publication Number Publication Date
JPH0641979A JPH0641979A (en) 1994-02-15
JP2614000B2 true JP2614000B2 (en) 1997-05-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP4218462A Expired - Lifetime JP2614000B2 (en) 1992-07-24 1992-07-24 Basics of steel frame

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Country Link
JP (1) JP2614000B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013185425A (en) * 2012-03-12 2013-09-19 Tokai Corp Bar arrangement structure and bar arrangement construction method of steel structure building/concrete foundation beam
JP6950068B1 (en) * 2020-10-27 2021-10-13 株式会社サクシス Residential building

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0449329A (en) * 1990-06-18 1992-02-18 Daiwa House Ind Co Ltd Pedestal construction of steel framed column

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JPH0641979A (en) 1994-02-15

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