JPH0776914A - Hanging-down construction method of steel stairs - Google Patents
Hanging-down construction method of steel stairsInfo
- Publication number
- JPH0776914A JPH0776914A JP5246277A JP24627793A JPH0776914A JP H0776914 A JPH0776914 A JP H0776914A JP 5246277 A JP5246277 A JP 5246277A JP 24627793 A JP24627793 A JP 24627793A JP H0776914 A JPH0776914 A JP H0776914A
- Authority
- JP
- Japan
- Prior art keywords
- floor
- steel
- stairs
- basement
- staircase
- 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
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、地下階の本設鉄骨階段
を根切時の仮設階段に利用する鉄骨階段ハングダウン工
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel staircase hang-down method in which a permanent steel staircase on a basement floor is used as a temporary staircase at the time of root cutting.
【0002】[0002]
【従来の技術】近年、各種コンクリート建物の地下躯体
工事には、工期の短縮などの利点から、しばしば逆打工
法が採用される。この逆打工法は、山止めと構真柱を施
工した後、地下へ向かって根切と躯体施工とを繰り返し
て、地下躯体を順次に構築するものであり、地下躯体の
早期構築だけでなく、地上躯体工事を同時進行させ得る
点でも優れている。2. Description of the Related Art In recent years, a reverse construction method has often been adopted for the construction of underground structures of various concrete buildings because of advantages such as a shortened construction period. In this reverse construction method, after constructing a mountain stop and a structure column, root cutting and building work are repeated toward the basement to build an underground structure one after another. Not only early construction of the underground structure is possible. , It is also excellent in that it is possible to proceed with the ground frame work at the same time.
【0003】[0003]
【発明が解決しようとする課題】しかし、この逆打工法
は、通常、作業床を兼ねる地上一階部分の床を施工した
後、順次に下階の床を造って行くので、最下階の床が出
来上がるまでは、本設鉄骨階段の組み立て及び利用がで
きず、そのために、根切時には、専ら仮設の昇降設備を
利用している。したがって、その昇降設備の組立・解体
撤去に甚だ手間がかかる上に、本設鉄骨階段の施工が遅
れ、折角の逆打工法の利点を減退させている。また、仮
設の昇降設備には、利便性、安全性の面で十分とはいい
難いところがある。そこで、本発明は、逆打工法におい
て本設鉄骨階段を昇降設備として仮設利用できるように
することにより、上記従来の問題点を解決し、併せて、
コストの低減を図ろうとするものである。However, in this reverse driving method, the floor on the first floor above the floor that also serves as a working floor is usually constructed, and then the floors on the lower floor are sequentially built. Until the floor is completed, the permanent steel stairs cannot be assembled and used, and for this reason, temporary rooting equipment is used during root cutting. Therefore, it takes a lot of time and effort to assemble and dismantle the lifting equipment, and the construction of the permanent steel stairs is delayed, which diminishes the advantage of the reverse cornering method. In addition, temporary lifting facilities are not enough in terms of convenience and safety. Therefore, the present invention solves the above-mentioned conventional problems by making it possible to temporarily use the main steel frame stairs as a lifting facility in the reverse driving method, and in addition,
It is intended to reduce the cost.
【0004】[0004]
【課題を解決するための手段】上記目的達成のため、本
発明は、地下階の本設鉄骨階段を先行作業床からの吊り
構造とし、該本設鉄骨階段を根切の進捗状況に合わせて
随時下方へと挿入することを特徴とする。In order to achieve the above object, the present invention has a structure in which a permanent steel staircase on a basement floor is suspended from a preceding work floor, and the permanent steel staircase is adapted to the progress of root cutting. It is characterized in that it is inserted downward at any time.
【0005】[0005]
【作用】如上の構成であるから、最終的には地下躯体に
定着される本設鉄骨階段が昇降設備に仮設利用できるこ
ととなり、従来の仮設の昇降設備を無用乃至極僅かにま
で削減することを可能にする。[Advantage] With the above structure, the permanent steel staircase that is finally fixed to the underground structure can be temporarily used for the lifting equipment, and the conventional temporary lifting equipment is unnecessary or can be reduced to a very small amount. to enable.
【0006】[0006]
【実施例】図面は、本発明の鉄骨階段ハングダウン工法
に係る実施例を示し、その内、図1乃至図5は、施工の
手順を示している。以下、これを順次に説明する。 (1) 第1工程(図1) まず、山止めと構真柱を施工して、作業床を兼ねた地上
階一階部の床1を構築し、この地上階一階部の床1に
は、拡大平面図たる図6にも示す本設鉄骨階段用開口部
2を形成するとともに、該開口部2の上縁適所に、それ
ぞれ本設鉄骨階段3の四隅の鋼製支柱31に対応させてブ
ラケット4を仮設する。次いで、地下一階部分の構築に
適合する第1次根切Aを行い、その第1次根切底Aaに捨
てコンクリートAbを打つ。一方、地上では、第1次根切
Aに対応させて、本設鉄骨階段3の内、最下階たる地下
階三階部下半に適応する第1層部3aを組み立てる。この
第1層部3aは、四隅の鋼製支柱31の前後相互に複数の鋼
製受梁32を上下互い違いに接合して、それら前後相互の
鋼製受梁32間で、複数の踊り場34付き鋼製階段33を互い
違いに架設するとともに、所要の鋼製手摺35を付設す
る。ただし、上端の踊り場34での内側の手摺は、後に不
要となるために、仮設の手摺枠15を用いる。また、鋼製
支柱31相互の下端にフレーム補強材36を横設する。な
お、上記第1層部3aを地下階三階部下半に適応させてい
るのは、地下階三階部の階高を地下階一階部のほぼ二倍
に設計しているからである。而して、その本設鉄骨階段
3の第1層部3aを、吊り手段5を介してクレーン等(図
示せず)により揚重して上記開口部2内へと挿入し、当
該各鋼製支柱31の上部を上記各ブラケット4にボルト・
ナットで取り外し可能に連繋させて、吊り下げ状態に保
持する。また、上記捨てコンクリートAbと本設鉄骨階段
3の第1層部3aの下端との間には、仮設のスロープ桟橋
6をかけわたす。斯様にして、本設鉄骨階段3の第1層
部3aを仮設利用することにより、地下階一階部の床7、
柱、外周壁等の地下躯体工事を遂行する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of the steel frame stair hang-down method of the present invention, of which FIGS. 1 to 5 show the construction procedure. Hereinafter, this will be sequentially described. (1) First step (Fig. 1) First, we construct the cliffs and structure columns to construct the floor 1 on the first floor above the ground floor, which doubles as a working floor. 6 forms an opening 2 for the permanent steel staircase, which is also shown in FIG. 6, which is an enlarged plan view, and makes the steel columns 31 at the four corners of the permanent steel staircase 3 correspond to the upper edges of the opening 2 at appropriate positions. To temporarily install the bracket 4. Then, a primary root cutting A suitable for the construction of the first basement floor is performed, and the primary root cutting bottom Aa is thrown away with concrete concrete Ab. On the other hand, on the ground, corresponding to the first root cutting A, the first layer portion 3a adapted to the lower half of the third floor portion of the basement floor, which is the lowest floor, is assembled in correspondence with the first root cutting A. In this first layer portion 3a, a plurality of steel receiving beams 32 are joined to each other in the front and rear of the steel columns 31 at the four corners, and a plurality of landings 34 are provided between the front and rear steel receiving beams 32. The steel stairs 33 are installed alternately and the required steel handrails 35 are attached. However, since the inner handrail at the landing 34 at the upper end is unnecessary later, a temporary handrail frame 15 is used. Further, a frame reinforcing member 36 is provided horizontally at the lower ends of the steel columns 31. The reason why the first layer portion 3a is adapted to the lower half of the third floor of the basement floor is that the floor height of the third floor of the basement floor is designed to be almost double that of the first floor of the basement floor. Then, the first layer portion 3a of the permanent steel staircase 3 is lifted by a crane or the like (not shown) through the suspending means 5 and inserted into the opening 2 to make the steel. Bolt the upper part of the pillar 31 to each bracket 4 above.
Removably connect with a nut and hold it in a suspended state. In addition, a temporary slope pier 6 is spanned between the abandoned concrete Ab and the lower end of the first layer portion 3a of the permanent steel staircase 3. In this way, by temporarily using the first layer portion 3a of the permanent steel staircase 3, the floor 7 of the first floor of the basement floor,
Underground construction work for pillars, outer walls, etc. will be performed.
【0007】(2) 第2工程(図2) 地下階一階部の地下躯体構築後、地下階二階部の構築に
適合する第2次根切Bを行い、第2次根切底Baに捨てコ
ンクリートBbを打つ。また、作業床たる地上階一階部の
床1上では、第2次根切Bに対応させて、本設鉄骨階段
3の内、最下階たる地下階三階部上半に適応する第2層
部3bを組み立て、上記第1層部3aの上端に連結一体化さ
せる。ただし、前回の上端の踊り場34に仮設した手摺枠
15は無用となるので取り外すが、これを今回の上端の踊
り場34に転用する。この第2層部3bの各部の構造も地下
階三階部上半とした理由も上記第1層部3aの場合と同様
である。次に、その第2層部3bの上端にて、吊り手段5
を介してクレーン等により荷重を支えつつ、前回第1層
部3aの各鋼製支柱31と上記各ブラケット4とを連ねたボ
ルト・ナットを取り外し、自由となった一連の第1層部
3a及び第2層部3bを、そのクレーン等を操作して下降さ
せ、下端を第2次根切B内へと十分に挿入させたところ
で、第2層部3bの各鋼製支柱31の上部を上記各ブラケッ
ト4にボルト・ナットで取り外し可能に連繋させて、吊
り下げ状態に保持する。更に、要所に垂直養生ネット37
を仮張りする。上記捨てコンクリートBbと本設鉄骨階段
3の第1層部3aの下端との間には、前回同様に仮設のス
ロープ桟橋6をかけわたす。斯様にして、本設鉄骨階段
3の第1層部3a及び第2層部3bを仮設利用することによ
り、地下階二階部の床8、柱、外周壁等の地下躯体工事
を遂行する。(2) Second step (Fig. 2) After the substructure of the first floor of the basement floor is constructed, the second root cutting B suitable for the construction of the second floor of the basement floor is performed and the second root cutting bottom Ba is formed. Hit abandoned concrete Bb. In addition, on the floor 1 of the first floor above the ground floor, which is the work floor, in correspondence with the second root cutting B, the first half of the permanent steel stairs 3 that is adapted to the upper half of the third floor of the basement floor, which is the lowest floor. The two-layer part 3b is assembled and connected and integrated with the upper end of the first layer part 3a. However, the handrail frame temporarily installed at the landing 34 at the upper end of the previous time
I removed 15 because it is useless, but I will divert it to the landing 34 at the top of this time. The reason why the structure of each part of the second layer part 3b is also the upper half of the third floor part of the basement is the same as in the case of the first layer part 3a. Next, at the upper end of the second layer portion 3b, the hanging means 5
While supporting the load with a crane or the like through the bolts, the bolts and nuts that previously connected the steel columns 31 of the first layer 3a and the brackets 4 to each other were removed, and a series of first layer that became free
3a and the second layer portion 3b are lowered by operating the crane or the like, and the lower end is sufficiently inserted into the secondary root cutting B, and the upper portion of each steel column 31 of the second layer portion 3b Is removably linked to the brackets 4 with bolts and nuts, and is held in a suspended state. In addition, vertical curing net 37
Temporarily tension. Between the abandoned concrete Bb and the lower end of the first layer portion 3a of the permanent steel staircase 3, a temporary slope pier 6 is stretched over as before. In this way, by temporarily using the first layer portion 3a and the second layer portion 3b of the permanent steel staircase 3, underground construction work of the floor 8, pillars, outer peripheral wall, etc. of the second floor of the basement floor is performed.
【0008】(3) 第3工程(図3) 地下階二階部の地下躯体構築後、地下階三階部上半の構
築に適合する第3次根切Cを行い、第3次根切底Caに捨
てコンクリートCbを打つ。ただし、上述のように、設計
上、地下階三階部の階高を地下階一階部のほぼ二倍程度
にまで高いものにしているため、第3次根切Cは地下階
三階部の階高のほぼ半分までとしている。ここでは、作
業性等の理由から、作業床たる地上階一階部の床1上で
の本設鉄骨階段3の組立作業は、残部のすべて、つま
り、地下階一階部及び二階部に適応する部分を第3層部
3cとして組み立て、上記第2層部3bの上端に連結一体化
させる。勿論、前回の上端の踊り場34に仮設した手摺枠
15は無用となるので取り外す。この第3層部3cの各部の
構造も上記第1層部3aと実質的に同じであるが、最上部
の鋼製階段33については設計上から長尺に形成する。こ
うして、連結一体化させた第1層部3a乃至第3層部3c
は、前回同様にして下降させ、下端を第3次根切C内へ
と十分に挿入させて、第3層部3cの各鋼製支柱31の中途
部を上記各ブラケット4にボルト・ナットで取り外し可
能に連繋させて、吊り下げ状態に保持する。また、垂直
養生ネット37の仮張りを適宜に伸長させる。上記捨てコ
ンクリートCbと本設鉄骨階段3の第3層部3cの下端との
間には、仮設の自在ステップ9をかけわたすとともに、
仮設手摺10を添える。ここでも、本設鉄骨階段3の第1
層部3a乃至第3層部3cを仮設利用して、地下階三階部の
地下躯体工事を遂行するが、床については、作業床等と
して用いる仮設スラブ11を設ける。なお、該仮設スラブ
11は、最終的には撤去するものである。(3) Third step (FIG. 3) After the construction of the underground structure of the second floor of the basement, a third root cutting C is performed to fit the construction of the upper half of the third floor of the basement, and the third root cutting bottom. Abandon Ca and hit concrete Cb. However, as mentioned above, because of the design, the floor height of the third basement floor is almost twice as high as that of the first basement floor. It is up to almost half of the floor height. Here, for the reason of workability, the assembling work of the permanent steel staircase 3 on the floor 1 of the ground floor first floor, which is the work floor, is applied to all the rest, that is, the basement first floor and second floor. 3rd layer part
It is assembled as 3c, and is connected and integrated with the upper end of the second layer portion 3b. Of course, the handrail frame temporarily installed at the landing 34 at the upper end of the previous time
15 is useless, so remove it. The structure of each part of the third layer part 3c is also substantially the same as that of the first layer part 3a, but the uppermost steel staircase 33 is formed long from the design standpoint. In this way, the first layer portion 3a to the third layer portion 3c are connected and integrated.
Is lowered in the same manner as the previous time, the lower end is sufficiently inserted into the third root cutting C, and the middle portion of each steel strut 31 of the third layer portion 3c is attached to each bracket 4 with bolts and nuts. Removably linked and held in a suspended state. Further, the temporary tension of the vertical curing net 37 is appropriately extended. Between the abandoned concrete Cb and the lower end of the third layer portion 3c of the permanent steel staircase 3, a temporary free step 9 is passed,
Attach temporary handrail 10. Here, too, the first of the main steel stairs 3
The layer 3a to the third layer 3c are temporarily used to perform an underground skeleton work on the third floor of the basement floor, and the floor is provided with a temporary slab 11 used as a work floor or the like. The temporary slab
11 will eventually be removed.
【0009】(4) 第4工程(図4) 地下階三階部上半の地下躯体構築後、地下階三階部下半
乃至基礎スラブの構築に適合する第4次根切Dを行い、
第4次根切底Daに捨てコンクリートDbを打つ。次に、連
結一体化させた第1層部3a乃至第3層部3cは、前回同様
にして下降させ、下端を第4次根切D内へと十分に挿入
させて(この際は最終設置位置となる。)、第3層部3c
の各鋼製支柱31の上端を上記各ブラケット4にボルト・
ナットで取り外し可能に連繋させて、吊り下げ状態に保
持する。ここでの上記捨てコンクリートDbと本設鉄骨階
段3の第3層部3cの下端との間には、基礎スラブ12を設
ける関係上、これまでより高い空間となることから階段
枠14及び手摺枠15を組み込みした枠組足場13を設け、不
足分を補うために下端に仮設のスロープ桟橋6を使用す
る。また、ここでも、本設鉄骨階段3の第1層部3a乃至
第3層部3cを仮設利用して、地下階三階部の地下躯体工
事を遂行するが、特に、床については、基礎スラブ12を
構築することとなる。(4) Fourth step (FIG. 4) After construction of the substructure of the upper half of the third floor of the basement, a fourth root cutting D suitable for construction of the lower half of the third floor of the basement or the foundation slab is performed,
Discard concrete Db at the 4th root cutting Da. Next, the first layer portion 3a to the third layer portion 3c, which are connected and integrated, are lowered in the same manner as the previous time, and the lower end is fully inserted into the fourth root cutting D (in this case, the final installation). Position), the third layer portion 3c
Bolt the upper end of each steel post 31 to each bracket 4 above.
Removably connect with a nut and hold it in a suspended state. Since the foundation slab 12 is provided between the above-mentioned discarded concrete Db and the lower end of the third layer portion 3c of the permanent steel staircase 3, the staircase frame 14 and the handrail frame will be higher than before. A frame scaffold 13 incorporating 15 is provided, and a temporary slope pier 6 is used at the lower end to make up for the shortage. Also, here again, the first layer part 3a to the third layer part 3c of the main steel staircase 3 are temporarily used to carry out the substructure work on the third floor of the basement floor. 12 will be built.
【0010】(5) 第5工程(図5) 地下階三階部下半の地下躯体構築後、つまり、地下躯体
全体を構築した後、基礎スラブ12上に捨てコンクリート
Dcを打ち、本設鉄骨階段3の下端を定着させるととも
に、出来上がった地下躯体の適所にその本設鉄骨階段3
の各箇所を適宜に定着させ、当初から吊り下げに使用し
てきた地上階一階部の床1のブラケット4を撤去し、本
設鉄骨階段3の最終的設置を完了する。(5) Fifth step (Fig. 5) After construction of the underground skeleton in the lower half of the third floor of the basement floor, that is, after constructing the entire underground skeleton, discard concrete on the foundation slab 12
Hit Dc to fix the lower end of the permanent steel staircase 3 and place the permanent steel staircase 3 at the proper place in the completed underground structure.
Then, the brackets 4 on the floor 1 on the first floor above the ground floor, which had been used for hanging from the beginning, are removed, and the final installation of the permanent steel stairs 3 is completed.
【0011】[0011]
【発明の効果】本発明によれば、地下階の本設鉄骨階段
を先行作業床からの吊り構造として、根切の進捗状況に
合わせて随時下方へと挿入するので、最終的に地下躯体
へ定着させる本設鉄骨階段を昇降設備に仮設利用でき、
したがって、従来の仮設の昇降設備を無用乃至極僅かに
まで削減することができ、かつ、これに伴う昇降設備の
組立・解体撤去の手間を無くすことができて、従来の本
設鉄骨階段の施工の遅れを解消でき、逆打工法における
利点を十分に発揮させることができる。しかも、コスト
を大幅に低減できる。また、このように本設鉄骨階段を
昇降設備に仮設利用するので、仮設の昇降設備とは異な
り作業上の利便性、安全性を向上させることができる。EFFECTS OF THE INVENTION According to the present invention, since the main steel staircase on the basement floor is suspended from the preceding work floor and is inserted downward as needed according to the progress of root cutting, it finally reaches the underground structure. The permanent steel stairs to be fixed can be temporarily used for lifting equipment,
Therefore, it is possible to reduce the conventional temporary lifting equipment to unnecessary or very small amount, and to eliminate the trouble of assembling and dismantling the lifting equipment accompanying this, and to construct the conventional steel-frame stairs. Can be eliminated, and the advantages of the reverse driving method can be fully exerted. Moreover, the cost can be significantly reduced. In addition, since the main steel staircase is temporarily used for the lifting equipment in this way, it is possible to improve the convenience and safety of work unlike the temporary lifting equipment.
【図1】 本発明の鉄骨階段ハングダウン工法の実施例
に係る第1工程説明図である。FIG. 1 is a first step explanatory diagram according to an embodiment of a steel frame stair hang-down method of the present invention.
【図2】 同第2工程説明図である。FIG. 2 is an explanatory view of the second step.
【図3】 同第3工程説明図である。FIG. 3 is an explanatory view of the same third step.
【図4】 同第4工程説明図である。FIG. 4 is an explanatory view of the fourth step.
【図5】 同第5工程説明図である。FIG. 5 is an explanatory view of the fifth step.
【図6】 同第1工程説明図に係る要部の拡大平面図で
ある。FIG. 6 is an enlarged plan view of a main part according to the first step explanatory diagram.
1…地上階一階部の床 2…本設鉄骨階段用
開口部 3…本設鉄骨階段 31…鋼製支柱 32…鋼製受梁 33…鋼製階段 34…鋼製踊り場 35…鋼製手摺 36…フレーム補強材 37…養生ネット 4…ブラケット 5…吊り手段 6…スロープ桟橋 7…地下階一階部の
床 8…地下階二階部の床 9…自在ステップ 10…仮設手摺 11…仮設スラブ 12…基礎スラブ 13…枠組足場 14…階段枠 15…手摺枠 A…第1次根切 B…第2次根切 C…第3次根切 D…第4次根切 Aa,Ba,Ca,Da,Dc…根切底 Ab,Bb,Cb,Db …捨て
コンクリート1 ... Floor on the ground floor 1st floor 2 ... Permanent steel stairway opening 3 ... Permanent steel staircase 31 ... Steel column 32 ... Steel beam 33 ... Steel stair 34 ... Steel landing 35 ... Steel handrail 36 ... Frame reinforcement 37 ... Curing net 4 ... Bracket 5 ... Suspension means 6 ... Slope pier 7 ... Floor on the first basement floor 8 ... Floor on the second floor basement 9 ... Flexible step 10 ... Temporary handrail 11 ... Temporary slab 12 … Basic slab 13… Frame scaffold 14… Staircase frame 15… Handrail frame A… Primary root cutting B… Secondary root cutting C… Third root cutting D… 4th root cutting Aa, Ba, Ca, Da , Dc… Root cutting bottom Ab, Bb, Cb, Db… Abandoned concrete
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 E04G 21/14 (72)発明者 星 正信 東京都中央区銀座八丁目21番1号 株式会 社竹中工務店東京本店内 (72)発明者 戸村 一郎 東京都中央区銀座八丁目21番1号 株式会 社竹中工務店東京本店内 (72)発明者 柴田 恭幸 東京都中央区銀座八丁目21番1号 株式会 社竹中工務店東京本店内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification number Internal reference number FI Technical display location E04G 21/14 (72) Inventor Masanobu Hoshi No. 21-1, Ginza Ginza, Chuo-ku, Tokyo Stock company Takenaka Corporation Tokyo Main Store (72) Inventor Ichiro Tomura 21-21 Ginza, Chuo-ku, Tokyo Stock Company Takenaka Corporation Tokyo Main Store (72) Inventor Yasuyuki Shibata 8-21 Ginza, Chuo-ku, Tokyo No. Stock Company Takenaka Corporation Tokyo Main Store
Claims (1)
の吊り構造とし、該本設鉄骨階段を根切の進捗状況に合
わせて随時下方へと挿入することを特徴とする鉄骨階段
ハングダウン工法。1. A steel staircase hang-up characterized in that the main steel frame staircase on the basement floor has a structure of suspending from the preceding work floor, and the main steel frame staircase is inserted downward as needed according to the progress of root cutting. Down construction method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24627793A JP3241896B2 (en) | 1993-09-06 | 1993-09-06 | Steel frame stair hang down method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24627793A JP3241896B2 (en) | 1993-09-06 | 1993-09-06 | Steel frame stair hang down method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0776914A true JPH0776914A (en) | 1995-03-20 |
JP3241896B2 JP3241896B2 (en) | 2001-12-25 |
Family
ID=17146151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24627793A Expired - Fee Related JP3241896B2 (en) | 1993-09-06 | 1993-09-06 | Steel frame stair hang down method |
Country Status (1)
Country | Link |
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JP (1) | JP3241896B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100930281B1 (en) * | 2001-01-25 | 2009-12-09 | 가부시키가이샤 요코모리 세이사쿠쇼 | Attachment bracket of steel stairway and attachment device and attachment method of steel stairway |
CN110318507A (en) * | 2019-07-30 | 2019-10-11 | 中国建筑第七工程局有限公司 | Zhongting pull rod steel stair system and its construction method |
CN114017097A (en) * | 2021-09-29 | 2022-02-08 | 中铁第四勘察设计院集团有限公司 | High evacuation platform for shield tunnel of high-speed magnetic levitation railway |
-
1993
- 1993-09-06 JP JP24627793A patent/JP3241896B2/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100930281B1 (en) * | 2001-01-25 | 2009-12-09 | 가부시키가이샤 요코모리 세이사쿠쇼 | Attachment bracket of steel stairway and attachment device and attachment method of steel stairway |
CN110318507A (en) * | 2019-07-30 | 2019-10-11 | 中国建筑第七工程局有限公司 | Zhongting pull rod steel stair system and its construction method |
CN110318507B (en) * | 2019-07-30 | 2024-03-12 | 中国建筑第七工程局有限公司 | Atrium pull rod steel stair system and construction method thereof |
CN114017097A (en) * | 2021-09-29 | 2022-02-08 | 中铁第四勘察设计院集团有限公司 | High evacuation platform for shield tunnel of high-speed magnetic levitation railway |
Also Published As
Publication number | Publication date |
---|---|
JP3241896B2 (en) | 2001-12-25 |
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