JP2763488B2 - Prefabricated pillar and inverted ramen prefabricated construction method - Google Patents

Prefabricated pillar and inverted ramen prefabricated construction method

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Publication number
JP2763488B2
JP2763488B2 JP5348431A JP34843193A JP2763488B2 JP 2763488 B2 JP2763488 B2 JP 2763488B2 JP 5348431 A JP5348431 A JP 5348431A JP 34843193 A JP34843193 A JP 34843193A JP 2763488 B2 JP2763488 B2 JP 2763488B2
Authority
JP
Japan
Prior art keywords
floor
pillar
column
main
girder
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 - Fee Related
Application number
JP5348431A
Other languages
Japanese (ja)
Other versions
JPH07189274A (en
Inventor
又 源 之 勝
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.)
Ando Kensetsu Co Ltd
Original Assignee
Ando Kensetsu Co Ltd
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Filing date
Publication date
Application filed by Ando Kensetsu Co Ltd filed Critical Ando Kensetsu Co Ltd
Priority to JP5348431A priority Critical patent/JP2763488B2/en
Publication of JPH07189274A publication Critical patent/JPH07189274A/en
Application granted granted Critical
Publication of JP2763488B2 publication Critical patent/JP2763488B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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】本発明は、建築および土木構造物
の地下躯体の構築において、型枠、鉄筋、コンクリート
工事の工業化を図る逆打ちラーメンプレハブ工法および
本設柱を形成するための構真柱に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of prefabricating a rigid-framed ramen for realizing the industrialization of formwork, reinforcing bars and concrete work, and a structure for forming a permanent pillar in the construction of an underground skeleton of a building or a civil engineering structure. About pillars.

【0002】[0002]

【従来の技術】地下鉄筋コンクリート造の地下躯体の構
築工法には、掘削を地表面から底部に向けて行ない、掘
削底部から上部に向けて現場打設する一般工法と、1階
躯体部分を地下の掘削、躯体構築に先だって構築し、本
設杭内に仮設支持抗を架構し、現場打設した躯体を仮設
支持抗で支持する逆打ち工法がある。躯体を掘削底部か
ら上部に向けて現場を打設する一般工法は下記する施工
手順で行なわれる。すなわち、地表面(地盤面)から支
持地盤面の間に、山留め壁と仮設支持杭として乗入構台
を支持する構台支持杭および山留め切梁を支持する棚杭
を構築する。前記乗入構台は地下工事のための作業床と
して使用する。ついで、前記乗入構台面上の掘削重機に
より掘削を開始して、山留め材(山留め壁の内部平面上
に仮設した切梁と腹起材からなる山留め壁を支持する仮
設材)を架構する。
2. Description of the Related Art There are two methods of constructing a subway reinforced concrete underground structure: a general construction method in which excavation is performed from the ground surface to the bottom and an excavation site is cast from the excavation bottom to the top. There is a reverse construction method that builds prior to excavation and skeleton construction, constructs a temporary support in the permanent pile, and supports the framed construction body with the temporary support. The general construction method of placing a building body from the bottom of the excavation to the top is performed according to the following construction procedure. That is, between the ground surface (ground surface) and the supporting ground surface, a gantry support pile for supporting the entering gantry and a shelf pile for supporting the pier beam are constructed as a retaining wall and a temporary supporting pile. The landing gantry is used as a work floor for underground construction. Next, excavation is started by the heavy excavator on the entrance gantry surface, and a mountain retaining material (a temporary material for supporting the mountain retaining wall made of a cut beam and a belly raised temporarily on the inner plane of the mountain retaining wall) is constructed.

【0003】この掘削は地盤面から最低部(建物の基礎
底部)まで順次掘削しつつ山留め材を所定間隔で架設す
る。つぎに、型枠、鉄筋の組み立てを現場で行ない、コ
ンクリートを打設し躯体コンクリートを架構する。この
躯体コンクリートの構築は下段から順に行なわれ、山留
め材は下段から順に解体される。地下躯体の構築が完了
したら、乗入構台を解体し、ついで、仮設支持杭を解体
する。
In this excavation, mountain retaining members are erected at predetermined intervals while sequentially excavating from the ground surface to the lowest portion (the bottom of the foundation of the building). Next, formwork and rebar are assembled on site, concrete is poured, and framed concrete is framed. The building concrete is constructed in order from the bottom, and the retaining material is dismantled in order from the bottom. When the construction of the underground skeleton is completed, the entrance gantry is dismantled, and then the temporary support pile is dismantled.

【0004】躯体を上階から先に打設する逆打工法は下
記する施工手順で行なわれる。すなわち、山留め壁と仮
設支持杭を構築し、ついで、1階床、1階に相当する大
梁、小梁、柱躯体を現場打設し、1階の本設床を地下工
事の作業床として使用する。
[0004] The reverse driving method of placing the frame first from the upper floor is performed according to the following construction procedure. In other words, a retaining wall and a temporary support pile are constructed, and then the first floor, the girders, small beams and pillars corresponding to the first floor are cast in place, and the first floor is used as a working floor for underground construction. I do.

【0005】本設大梁主筋を本設柱内に配筋する作業に
おいては、大梁主筋が仮設支持杭に当たり、所定の位置
に配筋することができなかったり、本設柱内での定着長
さを確保できないので、大梁主筋を仮設支持杭を貫通さ
せたり、本設柱の本設大梁との接合部のコンクリートを
増打し、大梁主筋を仮設支持杭の外面を迂回させるなど
配筋を行なう。
[0005] In the work of arranging the main girder main reinforcement in the main pillar, the main girder main reinforcement hits the temporary support pile and cannot be arranged at a predetermined position, or the anchoring length in the main pillar is fixed. Because the main beam cannot be secured, the reinforcement of the girder is pierced through the temporary support pile, or the concrete at the joint of the main pillar with the permanent girder is increased, and the reinforcement of the girder bypasses the outer surface of the temporary support pile. .

【0006】つぎに、1階の所定強度を確認し、その
後、地下1階床に相当する地盤まで掘削を行ない仮設支
持杭で1階躯体を支持させる。1階床と地下1階床との
階高が一定以上であれば、1階床と地下1階床との間の
所定位置に山留め材を架構し地盤を支持する。
Next, after confirming the predetermined strength of the first floor, excavation is performed to the ground corresponding to the first basement floor, and the first floor skeleton is supported by the temporary support pile. If the floor height between the first floor and the first basement floor is equal to or higher than a certain level, the ground is supported by mounting a mountain retaining material at a predetermined position between the first floor and the first basement floor.

【0007】ついで、地下1階床の下部に捨てコンクリ
ートを打設し、地下1階に相当する柱、大梁、小梁、床
の鉄筋、型枠を現場で組み立て、躯体を現場打設する。
つぎに、地下1階の躯体の所定強度を確認し、その後、
1階と地下1階との継目部分の鉄筋、型枠を現場で組み
立て、躯体を現場打設する。その後、地下2階床に相当
する地盤まで掘削を行ない、下部の躯体を所定の底部ま
で掘削、構築を繰り返し、地下躯体を構築する。前記継
目部分の鉄筋、型枠の組み立ておよびコンクリートの現
場打設時期は、底部まで掘削した後に行なうこともあ
る。この種の逆打ち工法では、一般的には、本設柱(建
物本体の柱)とは別に構真柱を設けている。
[0007] Next, cast concrete is cast in the lower part of the first basement floor, pillars, girders, small beams, floor reinforcing bars and formwork corresponding to the first basement floor are assembled at the site, and the skeleton is cast at the site.
Next, we checked the strength of the skeleton on the first basement floor,
The rebar and formwork at the joint between the first floor and the first basement are assembled on site, and the frame is cast in place. After that, excavation is performed to the ground corresponding to the second basement floor, the lower body is excavated to a predetermined bottom, and construction is repeated to construct an underground body. Assembling of the reinforcing bar and the formwork of the seam portion and casting of concrete at the site may be performed after excavation to the bottom. In this type of reverse beating method, generally, a straight pillar is provided separately from the main pillar (the pillar of the building body).

【0008】[0008]

【発明が解決しようとする課題】地下の鉄筋コンクリー
ト造の躯体を掘削底部から上部に向けて現場打設する一
般的な工法では、地盤の崩壊防止の仮設構造物(山留)
を架設しつつ最底部まで掘削した後、下段から順に型
枠、鉄筋、コンクリートをすべて現場組み立てで施工し
ており、階高(階と階との高低差)が小さい場合は、順
次切梁、腹起を除去しつつ躯体工事を進めることができ
るが、階高が大きい場合は、腹起の下まで外周部躯体を
構築し斜め切梁などで受け直すという補助手段を講じる
必要があり、この補助手段は後日に地上に搬出するため
に仮設材が大量なものになるという難点がある。
In a general construction method in which an underground reinforced concrete frame is cast from the bottom of the excavation to the top, a temporary structure for preventing collapse of the ground (Yamadome)
After digging to the bottom while erection, the formwork, reinforcing steel and concrete are all assembled on site from the bottom, and if the floor height (difference between floors) is small, It is possible to proceed with the skeleton construction while removing the bulging, but if the floor height is large, it is necessary to take auxiliary measures such as constructing the outer peripheral skeleton under the bulging and re-receiving it with diagonal cut beams etc. The auxiliary means has a drawback that a large amount of temporary material is required to be carried out to the ground at a later date.

【0009】地下の鉄筋コンクリート造の躯体を上階か
ら先に打設する逆打ち工法では、構真柱としてH型やロ
型や丸型の鋼柱が用いられており、大梁の鉄筋は、構真
柱主材に設けた孔を貫通するか構真柱の外側を迂回する
ように配置され、構真柱を鉄筋コンクリートで構成した
場合には、構真柱は仮設用としてのみ機能するものであ
り、大梁は、型枠を組み立てコンクリートを打設するた
め、打設したコンクリートの所要強度発現までは、型枠
を支持するサポート部材などの解体ができず、しかも、
型枠用資材はその都度引き上げなければならないという
問題点がある。
[0009] In the reverse-casting method in which an underground reinforced concrete frame is cast first from the upper floor, H-shaped, B-shaped or round steel columns are used as the straight columns, and the reinforcing beams of the girders are used in the construction. If the trussed pillar is made of reinforced concrete, it is arranged so as to penetrate the hole provided in the main pillar or bypass the outside of the trussed pillar, and the trussed pillar functions only for temporary use. Because the girder is used to assemble the formwork and cast concrete, the support members that support the formwork cannot be dismantled until the required strength of the cast concrete is achieved, and
There is a problem that the material for formwork must be raised each time.

【0010】本発明は上記した点に鑑みてなされたもの
で、構真柱の構成部材を柱隅部に集中することで構真柱
の構真柱主材を本設柱(工事終了後も実際に構造物の重
量を支持する柱)の柱主筋としても機能するようにする
とともに、大梁をプレキャストコンクリート製とするこ
とで、掘削に引き続く架設を可能にする逆打ちラーメン
プレハブ工法および本設柱と本設梁接合部における大梁
主筋の配筋のスペースを確保する構真柱を提供すること
を目的とする。
SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and the main members of a trussed pillar are concentrated on the corners of the trussed pillar so that the main members of the trussed pillar can be installed on the main pillar (after the completion of construction). The pre-casting method of the reverse-bent ramen prefabricated method, which enables it to function as the main reinforcement of the column that actually supports the weight of the structure) and makes the girders made of precast concrete, enabling the construction following the excavation It is an object of the present invention to provide a straight pillar that secures a space for reinforcing bars of a main beam at a beam-to-column connection.

【0011】[0011]

【課題を解決するための手段】本発明による構真柱は、
鉄筋コンクリート造の構造物の地下躯体において、床構
造を支持する大梁の端部を支持する構真柱であって、大
梁の長手方向に沿って配設され構真柱を直線的に貫通し
てその構真柱によって端部を支持された大梁同士を連結
する大梁主筋群と干渉しない位置に構真柱主材を配設
し、前記構真柱主材に構真柱の長手方向に間隔を置いて
構真柱主材同士を固定する補剛材を固着し、前記補剛材
の所定のものにプレキャストコンクリート製大梁の端部
を受ける支持架構を固着したことを特徴とする。
The pillar according to the present invention is:
In the underground skeleton of a reinforced concrete structure, it is a straight pillar that supports the end of the girder that supports the floor structure, and is disposed along the longitudinal direction of the girder and penetrates the straight pillar in a straight line. A main timber pillar is disposed at a position that does not interfere with a main girder bar group connecting the girders whose ends are supported by the timber columns, and the main timber members are spaced from each other in the longitudinal direction of the timber columns. A stiffener for fixing the main members of the straight columns is fixed, and a support frame for receiving an end of a precast concrete girder is fixed to a predetermined one of the stiffeners.

【0012】また、本発明の逆打ちラーメンプレハブ工
法は、鉄筋コンクリート造の地下躯体の構築において、
地表面に山留め壁および本設杭を構築し、本設杭に構真
柱を挿入し、山留め壁および構真柱の1階に対応する部
位に同一水平面内に位置するように支持架構を取付け、
プレキャストコンクリート製大梁を山留め壁および構真
柱に設けた支持架構に橋絡するように配置し、構真柱主
材の外周部の地下1階に対応する範囲に本設柱の帯筋を
装着し、大梁の配筋を行ない、逆打ち部分の地下1階に
対応する柱頭部の型枠の組み立てを行ない、構真柱補剛
材部分で前記柱頭部の型枠を保持し、1階床型枠の組み
立てを行ない、1階床の一部に開口部を設けて、1階床
の配筋を行ない、前記逆打ち部分の柱頭部型枠と大梁と
1階床型枠にコンクリートを打設して、柱、梁および1
階床を形成し、ついで、前記1階床の開口部を使用し
て、地下1階までの掘削を行ない、山留め壁および構真
柱の地下1階に対応する部位に同一水平面内に位置する
ように支持架構を取付け、プレキャストコンクリート製
大梁を山留め壁および構真柱に設けた支持架構に橋絡す
るように配置し、構真柱主材の外周部の地下2階に対応
する範囲に本設柱の帯筋を組み立て、大梁の配筋を行な
い、逆打ち部分の地下2階に対応する柱頭部の型枠の組
み立てを行ない、構真柱補剛材部分で前記柱頭部の型枠
を保持し、地下1階床型枠の組み立てを行ない、地下1
階床の一部に開口部を設けて、地下1階床の配筋を行な
い、前記逆打ち部分の柱頭部型枠と大梁と地下1階床型
枠にコンクリートを打設して、柱、梁および地下1階床
を形成した後、各階の柱頭部分から柱脚部までの型枠に
コンクリートを打設することを特徴とする。
[0012] Further, the reverse prefabricated ramen prefabrication method of the present invention is used for constructing a reinforced concrete underground frame.
Build a retaining wall and a permanent pile on the ground surface, insert a timber pillar into the permanent pile, and attach a support frame to the part corresponding to the first floor of the retaining wall and the timber pillar so that they are located in the same horizontal plane ,
Precast concrete girders are arranged so as to bridge the retaining wall and the support frame provided on the timber columns, and the stirrups of the main columns are installed in the area corresponding to the first basement floor on the outer periphery of the main members of the timber columns. Reinforcing the girder, assembling the formwork of the capital of the column corresponding to the first basement floor of the reverse striking part, holding the formwork of the capital of the capital with the stiffening part of the column, The formwork is assembled, an opening is provided in a part of the first floor, the first floor is laid, and concrete is applied to the column head formwork, the girder and the first floor formwork of the reverse hitting portion. Set up columns, beams and 1
A floor is formed, and then excavation is performed up to the first basement floor using the opening of the first floor, and the excavation is located in the same horizontal plane at a site corresponding to the first basement floor of the retaining wall and the straight pillar. A precast concrete girder is installed so as to bridge the retaining frame and the supporting frame provided on the timber column, and the main frame is located in the area corresponding to the second basement floor on the outer periphery of the main member of the timber column. Assemble the stirrups of the pillars, arrange the girders, and assemble the formwork of the column cap corresponding to the second basement floor of the reverse striking section. Hold it, assemble the floor formwork on the first basement floor,
An opening is provided in a part of the floor, reinforcement of the first basement floor is performed, concrete is poured into the column head formwork, the girder, and the first basement floor formwork of the reverse hitting part, After the beams and the first basement floor are formed, concrete is poured into the formwork from the capital to the column base of each floor.

【0013】[0013]

【作用】本発明の構真柱は、構真柱主材を大梁主筋群と
干渉しない位置に配設し、補剛材の所定のものにプレキ
ャストコンクリート製大梁の端部を受ける支持架構を固
着したことにより、構真柱を立設した後に直ちにプレキ
ャストコンクリート製大梁を構真柱間に架構し、さらに
大梁同士を連結する大梁主筋群を構真柱主材と干渉させ
ることなく構真柱を貫通させて直線的に配設することが
できる。これにより、大梁主筋が構真柱主材を貫通する
ことによって構真柱主材の強度低下を招き、必然的に構
真柱を補強しなければならない工事の煩雑さを避けるこ
とが出来る。あるいは構真柱主材を迂回するように大梁
主筋を配設する場合に比し、配筋工事の煩雑さ、および
大梁主筋を迂回させたことによる打設コンクリート、型
枠の増大を避けることができる。なお、ここで、構真柱
主材の「大梁主筋群と干渉しない位置」とは、後にも説
明するように、具体的には横断面四角形の構真柱なら
ば、四角形の各角部であり、横断面多角形の構真柱なら
ば、多角形の各角部であるなど、大梁主筋と干渉するこ
となく、かつ、重量を受ける柱の強度部材としてその機
能を発揮する合理的な位置である。
According to the present invention, there is provided a timber column having a main timber column at a position where it does not interfere with the main beams of the girder, and a support frame for receiving an end of the precast concrete girder at a predetermined stiffener. As a result, the precast concrete girders are immediately erected between the timber columns after the timber columns are erected, and the main beams connecting the girders are not interfered with the timber members. It can be penetrated and arranged linearly. Thus, the main beams of the girder penetrate the main member of the timber column and the strength of the main member of the timber column is reduced, so that it is possible to avoid the complexity of the construction in which the timber column must be reinforced inevitably. Or, compared to the case of arranging the girder main reinforcement so as to detour the main timber pillar, it is possible to avoid the complexity of the rebar arrangement work and the increase in cast-in concrete and formwork by bypassing the girder main reinforcement. it can. Here, the “position that does not interfere with the girder main bar group” of the main pillar main member is, as described later, specifically, in the case of a square pole with a rectangular cross section, at each corner of the square. Yes, if it is a straight column with a polygonal cross section, it is a reasonable position that does not interfere with the main beams of the girder and that exerts its function as a strength member of the column that receives weight, such as at each corner of the polygon It is.

【0014】本発明の逆打ちラーメンプレハブ工法は、
構真柱の構成部材を所定位置に集中することで、構真柱
の構成部材を柱主筋としても機能するようにし、プレキ
ャストコンクリート製大梁を用いることで、型枠資材の
搬入および搬出が少なくし、コンクリート強度発現まで
の待機時間の削減を図ることができる。
[0014] The method of the present invention,
By concentrating the structural members of the trussed pillars at predetermined positions, the structural members of the trussed pillars also function as column main reinforcements, and the use of precast concrete girders reduces the loading and unloading of form materials. Thus, the waiting time until the concrete strength is developed can be reduced.

【0015】[0015]

【実施例】以下本発明の一実施例を図面につき説明す
る。図1は本発明の逆打ちラーメンプレハブ工法に用い
られる構真柱1を示し、この構真柱1は、コンクリート
打設により形成されるべき本設柱の所定位置に配置され
た断面L型の鋼材からなる構真柱主材2と、これら構真
柱主材2の外面に巻き付けられる柱フープ3(図3)
と、構真柱主材2の内面に構真柱主材の長手方向に所定
間隔を置いて配置され構真柱主材同士を結合するように
構真柱主材2に溶接された構真柱補剛材4とから構成さ
れている。
BRIEF DESCRIPTION OF THE DRAWINGS FIG. Fig. 1 shows a straight pillar 1 used in the reverse prefabricated ramen prefabricated construction method of the present invention. The straight pillar 1 has an L-shaped cross section disposed at a predetermined position of a main pillar to be formed by concrete casting. Main pillar 2 made of steel and pillar hoop 3 wound around the outer surface of the main pillar 2 (FIG. 3)
And a truss which is arranged on the inner surface of the truss main pillar 2 at predetermined intervals in the longitudinal direction of the truss main pillar, and which is welded to the truss main pillar 2 so as to join the truss main pillars together. And a column stiffener 4.

【0016】ここで本設柱の構真柱主材2の所定位置と
は本設柱が四角形であれば各隅部であり、本設柱が多角
形であれば各角部であり、本設柱が円形であれば全体と
して円形を呈する位置である。すなわち、構真柱1によ
って端部を支持された大梁同士を連結する大梁主筋を直
線的に挿通させられ、かつ、構真柱主材2が構造物の重
量を受ける本設柱の強度部材として機能することができ
る合理的な位置である。
Here, the predetermined position of the main column 2 of the main pillar is a corner if the main pillar is square, and a corner if the main pillar is polygonal. If the pillar is circular, it is a position that exhibits a circular shape as a whole. In other words, the main beam main bar connecting the girders whose ends are supported by the vertical beam column 1 is inserted linearly, and the vertical beam main member 2 is used as a strength member of the main column receiving the weight of the structure. A reasonable position that can function.

【0017】構真柱1の構真柱主材2に設けた補剛材4
は、構真柱主材2の座屈防止と平面形状保持のためのも
のであり、構真柱1の下端部1aすなわち構真柱主材2
の下端部2aは本設杭5に固定される(図4)。この本
設杭5は、場所打ちコンクリート杭などの通常の手段で
形成されるものであり、たとえば、地面を掘削すること
で形成された杭掘削孔に杭鉄筋を挿入し、その後、杭掘
削孔にコンクリートを打設し、コンクリートが硬化する
前に構真柱1を杭掘削孔内に挿入し、杭コンクリート上
端面より下側の位置で構真柱1を定着させることにより
構築される。この構真柱1の本設杭5への固定はコンク
リートの硬化により行なわれる。
A stiffener 4 provided on the main beam 2 of the beam 1
Is for preventing buckling of the main shaft 2 and maintaining the planar shape thereof.
Is fixed to the permanent pile 5 (FIG. 4). The permanent pile 5 is formed by ordinary means such as a cast-in-place concrete pile. For example, a pile reinforcing rod is inserted into a pile drilling hole formed by excavating the ground, and thereafter, the pile drilling hole is formed. Concrete is poured into the pile, and the concrete pillar 1 is inserted into the pile drilling hole before the concrete hardens, and the concrete pillar 1 is fixed at a position below the upper end face of the pile concrete. Fixing of the straight pillar 1 to the permanent pile 5 is performed by hardening concrete.

【0018】図1に示す構真柱主材2は断面形状L形で
あるが、構真柱主材2は必要に応じて断面形状をコ字状
としたものやコ字状の端部をさらに内側に折り曲げ成形
したチャンネル状のものであってもよい。また。構真柱
1の上端部は、上階の柱主筋の定着長さを考慮して1階
床より所定位置まで上に突き出るようにすることが好ま
しい。
The main pillar 2 shown in FIG. 1 has an L-shaped cross section, but the main pillar 2 may have a U-shaped cross section or a U-shaped end if necessary. Further, it may be a channel shape bent and formed inward. Also. It is preferable that the upper end of the trussed pillar 1 protrude upward from the first floor to a predetermined position in consideration of the anchoring length of the pillar main bar on the upper floor.

【0019】一方、上記本設杭5に固定された構真柱1
の各面には、図3に示すように、それぞれ同一水平面内
に位置するように支持架構6,6…が取付けられる。支
持架構6は、構真柱1に交差するプレキャストコンクリ
ート製大梁7の一端の下面を受けるもので、現場におい
て所定位置の大梁取付けレベルの墨だしを行ない、支持
架構6のL形の外面を取付けレベルに合わせて構真柱補
剛材4に固着される。この時に、大梁7の寄りの位置合
わせは、支持架構6に大梁7の寄り墨を出し、大梁7の
梁側面の一方と寄り墨を合わせて位置を決める。
On the other hand, the straight pole 1 fixed to the permanent pile 5
As shown in FIG. 3, support frames 6, 6,... The support frame 6 receives the lower surface of one end of the precast concrete girder 7 intersecting with the timber pillar 1, performs inking at a predetermined position of the girder mounting level at the site, and attaches the L-shaped outer surface of the support frame 6 to the girder. It is fixed to the column stiffener 4 according to the level. At this time, the alignment of the shift of the girder 7 is performed by putting the shift of the girder 7 on the support frame 6 and aligning the shift with one of the beam side surfaces of the girder 7 to determine the position.

【0020】支持架構6の構真柱1への取付け位置は、
建築しようとする建物の1階床を形成するために、支持
架構6に支持されるプレキャストコンクリート製大梁7
の高さにより決められる。構真柱1と大梁7の接合部の
梁主筋の配筋は、架設後に内部空間にコンクリートを充
填する断面形状をU形としたものや、在来の大梁(大梁
の型枠や鉄筋を現場で組み立て、コンクリートも現場打
設する無垢なもの)あるいは工場などで製作されたプレ
キャスト大梁でも、大梁主筋9を構真柱主材2の間を通
して配筋するために構真柱主材2と大梁主筋9が交差す
ることはない。
The mounting position of the support frame 6 on the vertical column 1 is as follows.
Precast concrete girder 7 supported by support frame 6 to form the first floor of the building to be constructed
Is determined by the height of The reinforcement of the beam main reinforcement at the joint between the trussed pillar 1 and the girder 7 may be a U-shaped cross-section that fills the internal space with concrete after erection, or a conventional girder (a girder formwork or reinforcement In the case of a precast girder made in a factory or the like, the girder main bar 9 and the girder are arranged in order to arrange the main girder reinforcement 9 between the timber columns. The main line 9 does not cross.

【0021】すなわち、大梁主筋9は、図3に示すよう
に、対向配置された大梁7の一方の大梁7の上面に設け
た大梁のあばら筋8を挿通して他方の大梁7の上面に設
けた大梁のあばら筋8を挿通するように所定本数配置さ
れるが、対向配置された大梁7の一端側が構真柱1の各
面に配置された支持架構6に支持されているので、所定
本数の大梁主筋9は2方向から挿入されて構真柱1の空
間で交差する。この場合、構真柱主材2は図2に示すよ
うに、構真柱1の角部に配置されているので、構真柱主
材2と大梁主筋9が交差することはない。
That is, as shown in FIG. 3, the main beam 9 of the girder is provided on the upper surface of one of the girder 7 opposite to the other by inserting the stirrup 8 of the girder provided on the upper surface of the other girder 7. A predetermined number of studs are arranged so as to penetrate the stirrups 8 of the girders. However, one end of the opposing girders 7 is supported by the supporting frame 6 arranged on each surface of the straight beam column 1. The main beam 9 is inserted from two directions and intersects in the space of the straight pillar 1. In this case, as shown in FIG. 2, the timber column main member 2 is arranged at the corner of the timber column 1, so that the timber column main member 2 does not cross the main beam 9.

【0022】また、図3に示すように、上記構真柱1の
建物の1階床に相当する部分とこれより下の部分を囲む
ように柱頭部の柱型枠10が配置され、大梁7の上面を
囲むように1階床型枠11が配置される。柱型枠10お
よび1階床型枠11の配置も大梁主筋9の配置と同様に
作業現場において行なわれる。構築された1階床部分を
図4に示す。
As shown in FIG. 3, a column formwork 10 is arranged around a portion corresponding to the first floor of the building with the straight pillar 1 and a portion below the same. The first floor formwork 11 is arranged so as to surround the upper surface of the first floor. The column formwork 10 and the first-floor formwork 11 are arranged at the work site in the same manner as the main beam 9. The constructed first floor is shown in FIG.

【0023】つぎに、本発明の逆打ちラーメンプレハブ
工法の作業手順を説明する。まず、構真柱1を構築す
る。この構真柱1は、逆打ち部分の躯体などの固定荷重
(1階床と梁、地下1階柱、地下1階床と梁、地下2階
柱、耐圧版内の柱部分などの鉄筋とコンクリートなど躯
体部分の固定荷重)と地下部分の床に加わる積載荷重お
よびコンクリート打設の際の衝撃荷重や作業荷重、山留
め材による仮設荷重などと構真柱の重量を考慮した部材
で作られる。
Next, a description will be given of the working procedure of the reverse beating ramen prefabrication method of the present invention. First, the pillar 1 is constructed. This straight pillar 1 is used for fixed loads such as the frame of the reverse hitting part (1st floor and beam, 1st basement column, 1st floor and beam, 2nd floor basement, rebar such as column part in pressure resistant version) It is made of a member that takes into account the weight of the trussed pillar and the load applied to the floor of the underground part, the load imposed on the floor of the underground part, the impact load and the work load, and the temporary load due to the retaining material.

【0024】ついで、図5に示すように、地盤面20か
ら地中に延びる山留め壁21を構築し、地盤面20より
下方に本設杭掘削孔22を掘削し、この本設杭掘削孔2
2内に本設杭5の杭鉄筋籠(図示せず)を挿入し、その
後、本設杭5の先端から所定高さ23までコンクリート
を打設する。この場合、構真柱1は、頭部の位置を所定
の構真柱レベル、寄りなどを確認した後、図示しない固
定具により固定され、本設杭掘削孔22のコンクリート
未充填部分を土砂などで埋め戻すことで構真柱1をその
位置に保持する。図5において、符号24は最終掘削面
である。
Next, as shown in FIG. 5, a mountain retaining wall 21 extending from the ground surface 20 to the ground is constructed, and a permanent pile excavation hole 22 is excavated below the ground surface 20, and the permanent pile excavation hole 2 is formed.
A reinforced steel cage (not shown) of the permanent pile 5 is inserted into 2, and then concrete is poured from the tip of the permanent pile 5 to a predetermined height 23. In this case, after confirming the position of the head, the level of the straight pillar, the deviation, etc., of the head, the fixed pillar is fixed by a fixture (not shown). The framed pillar 1 is held at that position by backfilling. In FIG. 5, reference numeral 24 denotes a final excavation surface.

【0025】つぎに、図6に示すように、建物の1階床
を構築するために、地盤面20より下方の第1次掘削面
25までの地下1階部分の掘削を行ない、1階部分の躯
体を構築する。1階部分の躯体の構築においては、各構
真柱1の面および山留め壁21の内面に同一面上に位置
するように支持架構6をそれぞれ取付け、プレキャスト
コンクリート製大梁7を山留め壁21に設けた支持架構
6bと構真柱1に設けた支持架構6に橋絡するように配
置し、つぎに、対向する構真柱1に設けた支持架構6,
6同士に橋絡するように配置し、ついで、山留め壁21
に設けた支持架構6bに外周部プレキャストコンクリー
ト製大梁7bを配置することで1階床に相当する部分に
おける大梁7の配置が終了する。
Next, as shown in FIG. 6, in order to construct the first floor of the building, the first basement portion is excavated from the ground surface 20 to the first excavation surface 25, and the first floor portion is excavated. Build a skeleton. In the construction of the frame on the first floor, the supporting frames 6 are respectively attached to the surfaces of the straight columns 1 and the inner surface of the retaining wall 21 so as to be located on the same plane, and the precast concrete girders 7 are provided on the retaining wall 21. The supporting frame 6b and the supporting frame 6 provided on the truss pillar 1 are arranged so as to bridge them.
6 are arranged so as to bridge each other.
By disposing the outer precast concrete girder 7b on the support frame 6b provided in the above, the arrangement of the girder 7 in the portion corresponding to the first floor is completed.

【0026】これら大梁7の配置が終了したら、大梁7
の大梁主筋9および柱フープ3を配筋し、大梁7を囲む
ように1階床型枠11および構芯柱1の1階床下方の柱
頭部分柱型枠10を配置する(図3)。各部材の配置が
終了したら、小梁、床の鉄筋(図示せず)を配筋し、設
備などの配管類を配設し、その後、1階床型枠11およ
び柱型枠10)図示しない大梁型枠内や小梁型枠内にコ
ンクリートを打設する。これにより、1階床26および
構真柱1の1階床に相当する部分が構築される。
When the arrangement of the girders 7 is completed, the girders 7
The main beam 9 and the column hoop 3 are arranged, and the first-floor formwork 11 and the column capital column formwork 10 below the first-floor floor of the structural column 1 are arranged so as to surround the girder 7 (FIG. 3). When the arrangement of each member is completed, small beams and floor reinforcing bars (not shown) are arranged, piping such as equipment is arranged, and then the first floor floor form 11 and the column form 10) are not shown. Concrete is poured into the girder formwork and the small beam formwork. Thereby, a portion corresponding to the first floor 26 and the first floor of the truss pillar 1 is constructed.

【0027】つぎに、図7に示すように、建物の地下1
階床を構築するために、第2次掘削面27までの地下2
階部分の掘削を行ない地下1階部分の躯体を構築する。
地下1階部分の躯体の構築においては、図6と同様に、
各構真柱1の面および山留め壁21の内面に支持架構6
cを取付け、大梁7aを山留め壁21の支持架構6cと
構真柱1の支持架構6aに橋絡するように配置し、つぎ
に、対向する構真柱1に設けた支持架構6a,6a同士
に橋絡するように配置し、ついで、山留め壁21の支持
架構6aに外周部大梁7aを配置することで地下1階床
に相当する部分における大梁7aの配置が終了する。
Next, as shown in FIG.
Underground 2 to secondary excavation surface 27 to build floor
Excavation of the floor part will be carried out to build the skeleton of the first basement floor part.
In the construction of the skeleton on the first basement floor, as in FIG.
The supporting frame 6 is provided on the surface of each straight pillar 1 and the inner surface of the retaining wall 21.
c, and the girder 7a is arranged so as to bridge the support frame 6c of the retaining wall 21 and the support frame 6a of the vertical beam column 1. Then, the support frames 6a, 6a provided on the opposite vertical beam column 1 are connected to each other. Then, by arranging the outer peripheral girder 7a on the support frame 6a of the retaining wall 21, the arrangement of the girder 7a in the portion corresponding to the first basement floor is completed.

【0028】これら大梁7aの配置が終了したら、大梁
7aの大梁主筋9および柱フープ3を配筋し、大梁7を
囲むように地下1階床型枠11aおよび構真柱1の地下
1階床下方の柱頭部分柱型枠10aを配置する(図
8)。各部材の配置が終了したら、小梁、床の鉄筋(図
示せず)を配筋し、設備などの配管類を配設し、その
後、地下1階床型枠11aおよび柱型枠10a、図示し
ない大梁型枠や小梁型枠にコンクリートを打設する。こ
れにより、地下1階床28および構真柱1の地下1階床
に相当する部分が構築される。以下同様に所定階までの
床および構芯柱1の構築が行なわれる。
After the arrangement of the girder 7a is completed, the girder main reinforcement 9 and the column hoop 3 of the girder 7a are arranged, and the first basement floor form frame 11a and the first basement floor of the trussed column 1 surround the girder 7. The other capital part column formwork 10a is arranged (FIG. 8). When the arrangement of each member is completed, small beams and floor reinforcing bars (not shown) are laid, piping such as equipment is arranged, and then the basement floor formwork 11a and the column formwork 10a are shown. Pour concrete into large or small beam formwork. Thus, a portion corresponding to the first basement floor 28 and the first basement floor of the trussed pillar 1 is constructed. In the same manner, the construction of the floor and the structural pillar 1 up to the predetermined floor is performed.

【0029】図8は最終掘削の段階を示す。この最終掘
削の段階では、耐圧版30、基礎フーチング31、基礎
梁32、床版33を含む基礎躯体が構築される。
FIG. 8 shows the final excavation stage. In this final excavation stage, a foundation frame including the pressure-resistant plate 30, the foundation footing 31, the foundation beam 32, and the floor slab 33 is constructed.

【0030】図9は構真柱1を鉄筋コンクリート造の地
下躯体を構築する際の乗入構台の支柱として使用した例
を示すもので、この場合の構真柱1の構成は図1と同じ
である。
FIG. 9 shows an example in which the trussed pillar 1 is used as a column of a landing gantry when constructing a reinforced concrete underground skeleton. In this case, the configuration of the trussed pillar 1 is the same as that of FIG. is there.

【0031】構真柱1を乗入構台の支柱に使用するに
は、地盤面より下方に本設杭掘削孔を掘削し、本設杭掘
削孔内に本設杭の鉄筋籠5bを挿入し、この鉄筋籠5b
を所定位置に固定する。ついで、構真柱1を本設杭掘削
孔内に挿入し、本設杭掘削孔内にコンクリートを打設す
ることで構真柱1の挿入側端部を本設杭内に埋設固定す
る。そして、本設杭のコンクリートの強度が所定強度に
達したら、本設杭の掘削孔内に土砂などを埋め戻して構
真柱1のずれを防ぐ。構真柱1の頭部は地盤面より上方
に突出する長さに設定されており、構真柱1の突出部分
とこの突出部分に隣り合う構真柱1の突出部分とは水平
つなぎ40と垂直ブレース41により互いに連結され
る。本実施例は、構真柱1を仮設支持抗または本設柱の
本筋として機能させる。
In order to use the trussed pillar 1 as a column of the entrance gantry, a permanent pile excavation hole is excavated below the ground surface, and the reinforcing pile cage 5b of the permanent pile is inserted into the permanent pile excavation hole. , This rebar basket 5b
Is fixed in place. Next, the straight pillar 1 is inserted into the permanent pile drilling hole, and concrete is poured into the permanent pile drilling hole, so that the insertion side end of the straight pillar 1 is embedded and fixed in the permanent pile. Then, when the strength of the concrete of the permanent pile reaches a predetermined strength, earth and sand or the like is buried back in the excavation hole of the permanent pile to prevent the displacement of the straight pillar 1. The head of the trussed pillar 1 is set to have a length protruding above the ground surface, and the protruding part of the trussed pillar 1 and the protruding part of the trussed pillar 1 adjacent to this protruding part are connected by a horizontal joint 40. They are connected to each other by a vertical brace 41. In this embodiment, the trussed pillar 1 is made to function as a temporary support pillar or a main reinforcement of the permanent pillar.

【0032】構真柱1の突出部分とこの突出部分に隣り
合うの構真柱1の突出部分との間には下桁42が掛け渡
され、この下桁42の上には下桁42の長手方向と直交
する方向に延びる上桁43,43が掛け渡される。そし
て、掛け渡された上桁43,43の上に隙間なく覆工板
44が敷き詰められる。
A lower spar 42 is bridged between the projecting portion of the truss column 1 and the protruding portion of the truss column 1 adjacent to the protruding portion. Upper girders 43, 43 extending in a direction perpendicular to the longitudinal direction are bridged. Then, the lining plate 44 is laid without gaps on the bridges 43, 43 that have been bridged.

【0033】このように、本設杭に用いられる構真柱1
を乗入構台の支柱に利用することで従来の乗入構台の支
柱のように本設杭を避けた位置に配置する必要がないの
で、作業スペースが確保され、支柱が本設梁や本設壁、
あるいは本設床を貫通することがなく、地下躯体を阻害
することがない。
As described above, the straight pillar 1 used for the permanent pile
By using the pedestal for the gantry support, there is no need to place it at the position avoiding the permanent pile unlike the conventional gantry stanchion, so working space is secured and the wall,
Alternatively, it does not penetrate the main floor and does not hinder the underground skeleton.

【0034】[0034]

【発明の効果】以上述べたように本発明によれば、地下
の鉄筋コンクリート造の地下躯体の構築において、プレ
キャストコンクリート製大梁を用いることで、構真柱を
本設梁や本設柱を仮設構造物としても機能させることに
より、従来の工法のような山留め材が不要となり、型枠
資材の搬入および搬出が少なくなり、また、コンクリー
ト強度発現までの待機時間の削減を図ることができると
ともに、山留め用資材の搬入および搬出と架設解体作業
を省略できる。また、構真柱の主材は柱主筋として機能
し、本設梁主筋を構真柱の主材に当たることなく本設柱
内の所定位置に容易に配筋できる。
As described above, according to the present invention, in the construction of an underground reinforced concrete underground frame, a precast concrete giant beam is used, so that the straight columns can be used as the permanent beams and the temporary columns can be used as the temporary structures. By making it function as an object, it is not necessary to use a retaining material as in the conventional construction method, which reduces the loading and unloading of formwork materials, and reduces the waiting time until concrete strength is realized. Import and export of materials and erection and dismantling work can be omitted. Further, the main member of the timber column functions as a column main bar, and the main beam main bar can be easily arranged at a predetermined position in the main column without hitting the main member of the timber column.

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

【図1】本発明による本発明の逆打ちラーメンプレハブ
工法に用いられる構真柱とプレキャストコンクリート製
大梁の配置を示す図。
FIG. 1 is a view showing an arrangement of a straight pillar and a precast concrete girder used in the reverse prefabricated ramen prefabrication method of the present invention according to the present invention.

【図2】構真柱およびプレキャストコンクリート製大梁
の1階床部分および各階床の鉄筋の配置を示す図。
FIG. 2 is a diagram showing the first-floor portion of a timber pillar and a precast concrete girder, and the arrangement of reinforcing bars on each floor.

【図3】本発明による本発明の逆打ちラーメンプレハブ
工法の1階床コンクリート打設段階を示す図。
FIG. 3 is a diagram showing a first-floor concrete placing stage of the reverse-casting ramen prefabrication method of the present invention according to the present invention.

【図4】本発明による本発明の逆打ちラーメンプレハブ
工法の1階床構築部分を示す図。
FIG. 4 is a diagram showing a first-floor construction part of the reverse-bent ramen prefabrication method of the present invention according to the present invention.

【図5】本発明による本発明の逆打ちラーメンプレハブ
工法の第1段階を示す図。
FIG. 5 is a diagram showing a first stage of the reverse beating ramen prefabrication method of the present invention according to the present invention.

【図6】本発明による本発明の逆打ちラーメンプレハブ
工法の第2段階を示す図。
FIG. 6 is a view showing a second stage of the reverse beating ramen prefabrication method of the present invention according to the present invention.

【図7】本発明による本発明の逆打ちラーメンプレハブ
工法の第3段階を示す図。
FIG. 7 is a view showing a third stage of the reverse beating ramen prefabrication method of the present invention according to the present invention.

【図8】本発明による本発明の逆打ちラーメンプレハブ
工法の最終段階を示す図。
FIG. 8 is a diagram showing the final stage of the reverse beating ramen prefabrication method of the present invention according to the present invention.

【図9】構芯柱1を乗入構台の支柱に使用した例を示す
図。
FIG. 9 is a diagram showing an example in which the truss post 1 is used as a column of a landing gantry.

【符号の説明】[Explanation of symbols]

1 構真柱 2 構真柱主材 4 構真柱補剛材 5 本設杭 6 支持架構 7 プレキャストコンクリート製大梁 10 柱型枠 11 1階床型枠 20 地盤面 21 山留め壁 26 1階床 28 地下1階床 DESCRIPTION OF REFERENCE NUMERALS 1 construction pillar 2 construction pillar main material 4 construction pillar stiffening material 5 permanent pile 6 support frame 7 precast concrete girders 10 pillar formwork 11 1st floor formwork 20 ground surface 21 mountain retaining wall 26 1st floor 28 1st floor underground

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】鉄筋コンクリート造の構造物の地下躯体に
おいて、床構造を支持する大梁の端部を支持する構真柱
であって、 大梁の長手方向に沿って配設され構真柱を直線的に貫通
してその構真柱によって端部を支持された大梁同士を連
結する大梁主筋群と干渉しない位置に構真柱主材を配設
し、前記構真柱主材に構真柱の長手方向に間隔を置いて
構真柱主材同士を固定する補剛材を固着し、前記補剛材
の所定のものにプレキャストコンクリート製大梁の端部
を受ける支持架構を固着したことを特徴とする構真柱。
1. An underground skeleton of a reinforced concrete structure, comprising: a straight pillar for supporting an end of a girder supporting a floor structure, wherein the straight pillar is disposed along the longitudinal direction of the girder and has a straight structure. The main timber pillar is disposed at a position where it does not interfere with the main girder group connecting the girders whose ends are supported by the timber columns. A stiffener for fixing the main members of the trussed pillars is fixed at intervals in the direction, and a support frame for receiving an end of a precast concrete girder is fixed to a predetermined one of the stiffeners. Pillar pillar.
【請求項2】鉄筋コンクリート造の地下躯体の構築にお
いて、地表面に山留め壁および本設杭を構築し、本設杭
に構真柱を挿入し、山留め壁および構真柱の1階に対応
する部位に同一水平面内に位置するように支持架構を取
付け、プレキャストコンクリート製大梁を山留め壁およ
び構真柱に設けた支持架構に橋絡するように配置し、構
真柱主材の外周部の地下1階に対応する範囲に本設柱の
帯筋を装着し、大梁の配筋を行ない、逆打ち部分の地下
1階に対応する柱頭部の型枠の組み立てを行ない、構真
柱補剛材部分で前記柱頭部の型枠を保持し、1階床型枠
の組み立てを行ない、1階床の一部に開口部を設けて、
1階床の配筋を行ない、前記逆打ち部分の柱頭部型枠と
大梁と1階床型枠にコンクリートを打設して、柱、梁お
よび1階床を形成し、ついで、前記1階床の開口部を使
用して、地下1階までの掘削を行ない、山留め壁および
構真柱の地下1階に対応する部位に同一水平面内に位置
するように支持架構を取付け、プレキャストコンクリー
ト製大梁を山留め壁および構真柱に設けた支持架構に橋
絡するように配置し、構真柱主材の外周部の地下2階に
対応する範囲に本設柱の帯筋を組み立て、大梁の配筋を
行ない、逆打ち部分の地下2階に対応する柱頭部の型枠
の組み立てを行ない、構真柱補剛材部分で前記柱頭部の
型枠を保持し、地下1階床型枠の組み立てを行ない、地
下1階床の一部に開口部を設けて、地下1階床の配筋を
行ない、前記逆打ち部分の柱頭部型枠と大梁と地下1階
床型枠にコンクリートを打設して、柱、梁および地下1
階床を形成した後、各階の柱頭部分から柱脚部までの型
枠にコンクリートを打設することを特徴とする逆打ちラ
ーメンプレハブ工法。
2. In the construction of an underground skeleton made of reinforced concrete, a retaining wall and a permanent pile are constructed on the ground surface, and a timber pillar is inserted into the permanent pile to correspond to the first floor of the retaining wall and the timber pillar. Attach a support frame so that it is located in the same horizontal plane, place a precast concrete girder so as to bridge the retaining wall and the support frame provided on the timber column, Attach the reinforcement of the main column to the area corresponding to the first floor, arrange the girders, and assemble the formwork of the column cap corresponding to the underground first floor of the reverse striking part. Holding the form of the capital part in the part, assembling the first floor formwork, providing an opening in a part of the first floor,
Reinforcing the floor of the first floor, placing concrete in the column head formwork, the girder and the first floor formwork of the reverse hitting portion to form columns, beams and the first floor, Using the floor opening, excavation is performed up to the first basement floor, and a supporting frame is attached to the part corresponding to the first basement floor of the retaining wall and the timber column, so that it is located in the same horizontal plane, and a precast concrete girder Are arranged so as to bridge the retaining wall and the support frame provided on the timber column, and assemble the stirrups of the main column in the area corresponding to the second basement floor on the outer periphery of the main member of the timber column. Perform the reinforcement and assemble the formwork of the capital that corresponds to the second basement floor of the reverse striking part, hold the formwork of the capital with the timber stiffening part, and assemble the basement floor formwork To provide an opening in a part of the first basement floor, to arrange the reinforcement of the first basement floor, And Da設 the concrete to the stigma part mold frame and girders and the first basement floor mold parts, columns, beams and underground 1
A reverse precast ramen prefabrication method in which concrete is poured into a formwork from the capital to the column base of each floor after the floor is formed.
JP5348431A 1993-12-27 1993-12-27 Prefabricated pillar and inverted ramen prefabricated construction method Expired - Fee Related JP2763488B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5348431A JP2763488B2 (en) 1993-12-27 1993-12-27 Prefabricated pillar and inverted ramen prefabricated construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5348431A JP2763488B2 (en) 1993-12-27 1993-12-27 Prefabricated pillar and inverted ramen prefabricated construction method

Publications (2)

Publication Number Publication Date
JPH07189274A JPH07189274A (en) 1995-07-28
JP2763488B2 true JP2763488B2 (en) 1998-06-11

Family

ID=18396966

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5348431A Expired - Fee Related JP2763488B2 (en) 1993-12-27 1993-12-27 Prefabricated pillar and inverted ramen prefabricated construction method

Country Status (1)

Country Link
JP (1) JP2763488B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111021413B (en) * 2019-12-31 2021-05-28 青岛时代建筑设计有限公司 Reverse construction method based on assembly type concept
CN114687377B (en) * 2020-12-30 2023-08-08 上海建工二建集团有限公司 Large bottom plate modularized structure under time-limited condition and construction method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3062541B2 (en) * 1992-05-08 2000-07-10 株式会社竹中工務店 Reverse construction method applied to high strength cast-in-place concrete pile

Also Published As

Publication number Publication date
JPH07189274A (en) 1995-07-28

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