JP3351886B2 - Thin-walled precast concrete beam and method of manufacturing the same - Google Patents
Thin-walled precast concrete beam and method of manufacturing the sameInfo
- Publication number
- JP3351886B2 JP3351886B2 JP33674893A JP33674893A JP3351886B2 JP 3351886 B2 JP3351886 B2 JP 3351886B2 JP 33674893 A JP33674893 A JP 33674893A JP 33674893 A JP33674893 A JP 33674893A JP 3351886 B2 JP3351886 B2 JP 3351886B2
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- JP
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- Prior art keywords
- piece
- pieces
- plate
- thin
- precast concrete
- 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.)
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- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Rod-Shaped Construction Members (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はプレキャスト鉄筋コンク
リート工法における薄肉のプレキャストコンクリート梁
（以下ＰＣ梁という）及びその製造方法に係るものであ
る。The present invention relates are those of the manufacturing method of thin precast concrete beam (hereinafter referred to as PC Beam)及patron in precast reinforced concrete construction method.
【０００２】[0002]
【従来の技術】図９は従来の構造体としてのＰＣ梁部材
ａを示し、構造設計確認後、設計通りの梁主筋ｂ及び肋
筋ｃを事前に配置し、部材の製造を行う。図１０は従来
の非構造体としてのＰＣ板を示し、溝型断面のＰＣ部材
ｄにワイヤメッシュｅを埋設し、型枠として利用し溝型
部にコンクリートを打設し、脱型することなくそのまま
残す。2. Description of the Related Art FIG. 9 shows a PC beam member a as a conventional structure. After confirming the structural design, beam main bars b and rib bars c are arranged in advance as designed, and the members are manufactured. FIG. 10 shows a conventional PC board as a non-structured body, in which a wire mesh e is buried in a PC member d having a channel-shaped cross section, and concrete is poured into a channel-shaped portion by using it as a formwork without demolding. Leave as is.
【０００３】[0003]
【発明が解決しようとする課題】前記ＰＣ梁部材を構造
体として利用する場合、梁の配筋に対応して部材の製作
種が増加し、生産効率が低下する。非構造体としてのＰ
Ｃ板は、梁型枠として利用できるが、コンクリート打設
後、脱型することなく、そのまま残すので梁断面が大き
くなり、不経済である。When the PC beam member is used as a structure, the number of types of members to be manufactured increases in accordance with the arrangement of beams, and the production efficiency decreases. P as a non-structure
Although the C plate can be used as a beam formwork, it is not removed after the concrete is cast, but is left as it is, so the beam section becomes large, which is uneconomical.
【０００４】またＰＣ板と後打ちコンクリートの一体性
を確保する必要があり、更に設備工事に使用する配管に
よって部材の種類が増大し、更にまた構造設計、設備設
計終了後でないと部材製作に着手できない。本発明は前
記従来技術の有する問題点に鑑みて提案されたもので、
その目的とする処は作業所における配筋が単純化され、
省力化が図られ、ＰＣ部材と後打ちコンクリートの一体
性が図られ、設備のスリーブの配管に対応でき、型枠支
保工が省略される標準量配筋化された薄肉プレキャスト
コンクリート梁及びその製造方法を提供する点にある。In addition, it is necessary to ensure the integrity of the PC board and the post-cast concrete, and furthermore, the types of members are increased due to the piping used for the facility work. Can not. The present invention has been proposed in view of the problems of the prior art,
The aim is to simplify the arrangement of bars in the workplace,
Standardized arrangement of thin precast concrete beams, which save labor, ensure the integration of PC members and post-cast concrete, can be used for piping of equipment sleeves, and omit formwork support, and manufacture them The point is to provide a method .
【０００５】[0005]
【課題を解決するための手段】前記の目的を達成するた
めに、本発明に係る薄肉ＰＣ梁は、最終設計の配筋とは
別に決定された標準配筋量の鉄筋が内臓された溝型断面
のプレキャストコンクリート部材における相対する一双
の垂直部片の対向面に、設備配管用のスリーブの外径に
対応した径で同軸上に中心を有する円形状の凹窩をそれ
ぞれ設け、このような凹窩をプレキャストコンクリート
部材の長手方向に間隔をおいて複数設けてなることを特
徴とする。 In order to achieve the above-mentioned object, a thin-walled PC beam according to the present invention has a grooved shape in which a reinforcing bar having a standard reinforcing amount determined separately from a reinforcing bar of a final design is incorporated. The outer diameter of the sleeve for the equipment piping is
It circular crypts having a central coaxially the corresponding diameter
Each of these cavities is precast concrete
It is characterized in that a plurality of members are provided at intervals in the longitudinal direction of the member.
Sign.
【０００６】請求項２の発明は、底部片と、この底部片
の両側から立ち上り相対する一双の垂直部片とからな
り、前記一双の垂直部片の対向面には、設備配管用のス
リーブの外径に対応した径で同軸上に中心を有する円形
状の凹窩がそれぞれ設けられ、最終設計の配筋とは別に
決定された標準配筋量の鉄筋が内臓された薄肉プレキャ
ストコンクリート梁の製造方法であって、定盤上におい
て、前記一双の垂直部片がそれぞれ前記底部片から該底
部片の外側に倒れた状態で形成されるように、前記標準
配筋量の鉄筋を配筋しコンクリートを打設して前記一双
の垂直部片の構成用の板状片を作り、次に、定盤上にお
いて前記一双の板状片を建て起こし、次に、建て起こさ
れた前記板状片を互いに離間接近する方向に動かすこと
で梁幅を調整し、次に、定盤上において前記梁幅が調整
された一双の板状片の間にコンクリートを打設して前記
底部片の構成用の板状片を作ることを特徴とする。 According to a second aspect of the present invention, a bottom piece and the bottom piece are provided.
From two opposite vertical pieces.
On the opposing surface of the pair of vertical pieces, a pipe for equipment piping is provided.
A circle whose center is coaxial with a diameter corresponding to the outer diameter of the leave
-Shaped depressions are provided separately from the reinforcing bar of the final design
Thin pre-caps with built-in reinforcing bars of the determined standard
This is a method for manufacturing a streched concrete beam,
And the two vertical pieces are each separated from the bottom piece by the bottom piece.
The standard so that it is formed on the outside of the piece
Reinforcing the reinforcing bars, placing concrete, and
Plate for the construction of the vertical piece of
And erect the pair of plate-like pieces, and then erect
Moving the plate-shaped pieces separated from each other and approaching each other
Adjust the beam width with, then adjust the beam width on the surface plate
Cast concrete between the pair of slabs
It is characterized by making a plate-like piece for the construction of the bottom piece.
【０００７】[0007]
【作用】本発明によれば前記したように、構造体として
の溝型断面の薄肉ＰＣ板を製作し、部材断面毎に最終設
計の配筋とは別に各々の標準配筋量を決定して予め配筋
しておき、作業所において設計図との不足分の鉄筋は後
施工によって梁主筋及び肋筋を溝型部内に落とし込み、
同部内にコンクリートを打設し、前記ＰＣ梁を型枠とし
て鉄筋コンクリート梁を構成するものであって、梁部材
の製作を梁断面寸法毎の対応のみで解決し、施工に際し
て型枠支保工を省略しうるものである。According to the present invention, as described above, a thin PC board having a groove-shaped cross section as a structure is manufactured, and the standard reinforcing bar amount is determined for each cross section of the member separately from the reinforcing bar of the final design. Rebars are arranged in advance, and at the work site, the reinforcing bars that are not enough with the design drawings are dropped into the grooved section by beam construction by post-processing,
Concrete is cast in the same part, and the reinforced concrete beam is constructed by using the PC beam as a formwork. The beam members can be manufactured only for each beam cross-sectional dimension, and the formwork support work is omitted during construction. It is possible.
【０００８】而して前記溝型断面のＰＣ梁における相対
する一双の垂直部片の対向面に設けた円形状の凹窩がシ
ャーキーの機能を果たし、打設コンクリートと前記ＰＣ
梁とが一体化される。また作業所におけるＰＣ梁の接手
部の重ね継手が可能となり、配筋の省力化が図られる。[0008] The circular recess provided on the opposing surface of the pair of vertical pieces facing each other in the PC beam having the groove-shaped cross section functions as a shark, and the cast concrete and the PC are used.
The beam is integrated. In addition, a lap joint of the joint part of the PC beam in the work place becomes possible, and labor saving of reinforcing bars is achieved.
【０００９】更にまたスリーブを施工する場合、前記Ｐ
Ｃ梁の垂直部片の対向面に設けた円形凹窩における薄肉
の底部片を打ち抜いて開口部を設け、同開口部を利用し
てスリーブを配設するとともに、同開口部の外周部に補
強筋を配筋して開口部の補強をすることによって、スリ
ーブの配設に対応しうるものである。Further, when a sleeve is to be constructed, the above P
An opening is formed by punching a thin bottom piece in a circular cavity provided on the opposite surface of the vertical piece of the C beam, and a sleeve is provided using the opening, and reinforcement is provided on the outer periphery of the opening. By arranging the reinforcing bars to reinforce the opening, it is possible to cope with the arrangement of the sleeve.
【００１０】[0010]
【実施例】以下本発明を図示の実施例について説明す
る。図１及び図２は薄肉ＰＣ梁を示し、水平底部片１
と、同水平底部片１の両端に垂設された一双の垂直部片
２とによって溝型部材が構成され、部材断面毎に最終設
計の配筋とは別に夫々の部材の標準配筋量を決定し、事
前に標準量の梁主筋３及び標準量の梁肋筋４を配筋して
薄肉ＰＣ梁の製作を行う。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 and 2 show a thin PC beam and a horizontal bottom piece 1
And a pair of vertical pieces 2 vertically suspended from both ends of the horizontal bottom piece 1 constitute a groove-shaped member, and the standard reinforcing amount of each member is set separately from the final design of the reinforcing bar for each member cross section. After the determination, a standard amount of beam main reinforcement 3 and a standard amount of beam rib 4 are arranged in advance to manufacture a thin PC beam.
【００１１】なお相対する垂直部片２の対向面には一定
のピッチで一定の大きさの円形状の凹窩５が設けられ
る。而して作業所において、前記ＰＣ梁の溝部内に、最
終設計に対する不足量の梁主筋３ａ及び同じく不足量の
梁肋筋４ａを後施工によって落とし込んだのちコンクリ
ートを打設し、同後打ちコンクリートと前記ＰＣ梁とを
一体化する。この際、前記凹窩５がシャーキーの機能を
果たすものである。The opposed surfaces of the opposed vertical pieces 2 are provided with circular recesses 5 having a fixed pitch and a fixed size. Then, at the work place, after the insufficient amount of the beam main reinforcement 3a and the insufficient amount of the rib rib 4a for the final design were dropped by post-processing in the groove of the PC beam, concrete was cast, and the post-cast concrete was cast. And the PC beam are integrated. At this time, the recess 5 functions as a shark.
【００１２】図中６は柱、６ａは柱主筋、６ｂは柱帯筋
である。図示の実施例は前記したように構成されている
ので、部材の製作が梁断面寸法毎の対応のみで解決で
き、前記ＰＣ梁を構造体の一部として利用することがで
き、解体費、処分費を含む型枠費の低減が図られ、設計
の中間段階で部材製作が可能となり、また作業の平準化
が図られ、事前のストックが可能となる。In the figure, 6 is a column, 6a is a column main bar, and 6b is a column bar bar. Since the illustrated embodiment is configured as described above, the fabrication of the members can be solved only for each beam cross-sectional dimension, the PC beam can be used as a part of the structure, dismantling cost, disposal The cost of the formwork including the cost can be reduced, the members can be manufactured in the middle stage of the design, the work can be leveled, and the stock can be made in advance.
【００１３】図３は設備用梁としてのスリーブ貫通部分
の対応を示し、前記ＰＣ梁の垂直部片２に設けた凹窩５
のうち、スリーブ７が配置される部分において、薄肉の
底部片を取り去り、かくして生じた垂直部片２の各開口
部８間にスリープ７を貫挿するとともに、各開口部８の
周囲に開口部補強筋９を配筋する。図７は前記薄肉ＰＣ
梁の製造方法を示し、定盤１０上に、相対する側枠１１
間に円形状の凹窩５を上面に有する垂直部片構成用の板
状片１２を打設する。すなわち、前記一双の垂直部片２
がそれぞれ前記底部片１から該底部片１の外側に倒れた
状態で形成されるように、前記標準配筋量の鉄筋を配筋
しコンクリートを打設して前記一双の垂直部片の構成用
の板状片１２を作る。次に、同板状片１２の一次製作
後、同板状片１２の両端部分を建て起こし、相対する板
状片１２、１２間に底部片構成用の板状片１３を２次打
設する。すなわち、定盤１０上において前記一双の板状
片１２、１２を建て起こし、次に、建て起こされた前記
板状片１２を互いに離間接近する方向に動かすことで梁
幅Ｂを調整し、次に、定盤１０上において前記梁幅Ｂが
調整された一双の板状片１２、１２の間にコンクリート
を打設して前記底部片の構成用の板状片１３を作る。図
中、Ｈは梁成の調整部分、Ｂは梁幅の調整部分である。FIG. 3 shows the correspondence of the portion penetrating the sleeve as the equipment beam, and shows the recess 5 provided on the vertical piece 2 of the PC beam.
In the portion where the sleeve 7 is arranged, the thin bottom piece is removed, the sleep 7 is inserted between the openings 8 of the vertical piece 2 thus formed, and the openings are formed around the openings 8. Reinforcing bars 9 are arranged. Figure 7 shows the thin PC
The method for manufacturing a beam is shown.
A plate-like piece 12 having a circular concave portion 5 on the upper surface for forming a vertical piece is cast . That is, the pair of vertical pieces 2
Respectively fell from the bottom piece 1 to the outside of the bottom piece 1
Reinforcing the reinforcing bar with the standard bar
For the construction of the pair of vertical pieces
Is made. Next, after the primary production of the plate-shaped piece 12, both ends of the plate-shaped piece 12 are erected, and a plate-shaped piece 13 for forming a bottom piece is secondly cast between the opposed plate-shaped pieces 12, 12. . That is, on the surface plate 10,
Erecting the pieces 12, 12 and then erecting said
The beam is moved by moving the plate-like pieces 12 away from each other.
After adjusting the width B, the beam width B on the surface plate 10 is
Concrete between one pair of slabs 12
To make a plate-like piece 13 for the construction of the bottom piece. In the drawing, H is a beam adjusting portion, and B is a beam width adjusting portion.
【００１４】この際、梁部材としての断面が統一されて
いるので、製造法の自由度が増し、（イ）単体で製作す
る方法、（ロ）長尺の枠に仕切を入れて製作する方法、
（ハ）長尺の製品として一次製作し、所定の寸法に切り
揃える方法等が採用され、図８は長尺の部材を製作し、
仕切、製品カット等の方法で梁長Ｌ1 、Ｌ2 、Ｌ3 の調
整を行うものである。At this time, since the cross-section of the beam member is unified, the degree of freedom of the manufacturing method is increased, and (a) a method of manufacturing a single member, and (b) a method of manufacturing by partitioning a long frame. ,
(C) A method of first producing a long product and cutting it to a predetermined size is adopted, and FIG. 8 produces a long member.
The beam lengths L 1 , L 2 and L 3 are adjusted by a method such as partitioning or product cutting.
【００１５】[0015]
【発明の効果】本発明に係る薄肉ＰＣ梁は溝型断面のＰ
Ｃ梁部材に、最終設計の配筋とは別に決定された標準配
筋量の鉄筋が内蔵されていて、部材としての断面が統一
されているので、部材の製作が簡単で製作法の自由度が
増し、作業所において前記溝型断面のＰＣ梁に最終設計
に対し不足量の鉄筋を補足配筋して、前記コンクリート
を打設することによって、前記ＰＣ梁部材に型枠を兼用
せしめて鉄筋コンクリート梁を構成するようにしたの
で、作業所における配筋が単純化され省力化が図られる
ものであり、また部材の軽量化が図られる。The thin PC beam according to the present invention has a groove-shaped cross section P
Reinforcement of standard reinforcement determined separately from the reinforcement of the final design is built in the C beam member, and since the cross section as the member is unified, the production of the member is easy and the degree of freedom of the production method is In the work place, the insufficient reinforcement is added to the PC beam of the groove-shaped cross section for the final design, and the concrete is cast. Since the beams are formed, the arrangement of the reinforcing bars in the work place is simplified, labor is saved, and the weight of the members is reduced.
【００１６】更に前記垂直部材に配筋された円形の凹窩
はシャーキーとして働き、前記ＰＣ梁と同ＰＣ梁に対す
る打設コンクリートの一体化が図られるものである。ま
た、標準配筋量の鉄筋が内蔵された溝型断面の薄肉ＰＣ
梁の溝部に不足量の梁主筋及び肋筋を配筋してコンクリ
ートを打設できるので、作業所における配筋が単純化さ
れ省力化が図られ、型枠支保工が省略されるのみなら
ず、作業所における接合部の重ね継手が可能となり、配
筋の省力化となる。Further, the circular recess arranged in the vertical member functions as a shark, so that the PC beam and cast concrete are integrated with the PC beam. Ma
In addition, a thin-walled PC with a groove-shaped cross section with a standard reinforcing bar reinforcement
Since the concrete can be cast with insufficient beam main reinforcement and rib reinforcement in the groove of the beam, the reinforcement in the work place is simplified, labor saving is achieved, and not only the form support is omitted but also In addition, a lap joint of a joint in a work place becomes possible, and labor for arranging the reinforcing bars can be saved.
【００１７】また、前記溝型断面の薄肉ＰＣ梁の垂直部
片に設けた凹窩における底部片を打ち抜いて開口部を設
け、かくして形成された相対する垂直部片の開口部間に
スリーブを貫通するとともに、同開口部の外周に補強筋
を配筋することによって設備のスリーブの配設に対する
対応が可能となり、スリーブについても標準化される。
また、本発明の製造方法によれば、上記の薄肉プレキャ
ストコンクリート梁を簡単に製造することができる。 Further , an opening is provided by punching a bottom piece in a concave portion provided in a vertical piece of the thin PC beam having the groove-shaped cross section, and a sleeve is penetrated between openings of the thus formed vertical pieces. In addition, by arranging reinforcing bars on the outer periphery of the opening, it becomes possible to cope with the arrangement of the sleeve of the equipment, and the sleeve is standardized.
Further, according to the production method of the present invention, the thin pre-
Stranded concrete beams can be easily manufactured.
【図１】本発明に係る薄肉ＰＣ梁の一実施例を示す縦断
側面図である。FIG. 1 is a longitudinal sectional side view showing an embodiment of a thin PC beam according to the present invention.
【図２】図１の縦断面図である。FIG. 2 is a longitudinal sectional view of FIG.
【図３】前記薄肉ＰＣ梁の他の実施例を示す縦断側面図
である。FIG. 3 is a vertical sectional side view showing another embodiment of the thin PC beam.
【図４】図３の矢視イ−イ図である。FIG. 4 is a view taken along the arrow in FIG. 3;
【図５】図３の矢視ロ−ロ図である。FIG. 5 is a roll view of FIG. 3;
【図６】図３の矢視ハ−ハ図である。FIG. 6 is a view taken along the arrow line in FIG. 3;
【図７】本発明に係る薄肉ＰＣ梁の製造方法の一例を示
す説明図である。FIG. 7 is an explanatory view showing an example of a method for manufacturing a thin PC beam according to the present invention.
【図８】本発明に係る薄肉ＰＣ梁の製造方法の他の例を
示す説明図である。FIG. 8 is an explanatory view showing another example of the method of manufacturing a thin PC beam according to the present invention.
【図９】従来の構造体としてのＰＣ梁部材の縦断面図で
ある。FIG. 9 is a longitudinal sectional view of a PC beam member as a conventional structure.
【図１０】従来の非構造体としてのＰＣ板を示す縦断面
図である。FIG. 10 is a longitudinal sectional view showing a conventional PC board as a non-structural body.
１ 水平底部片 ２ 垂直部片 ３ 標準量の梁主筋 ３ａ 不足量の梁主筋 ４ 標準量の梁肋筋 ４ａ 不足量の梁肋筋 ５ 凹窩 ６ 柱 ６ａ 柱主筋 ６ｂ 柱帯筋 ７ スリーブ ８ 開口部 ９ 開口部補強筋 １０ 定盤 １１ 側枠 １２ 垂直部片構成用の板状片 １３ 水平部片構成用の板状片 DESCRIPTION OF SYMBOLS 1 Horizontal bottom piece 2 Vertical piece 3 Standard beam main bar 3a Short beam main bar 4 Standard beam rib 4a Short beam rib 5 Concavity 6 Column 6a Column main bar 6b Column bar 7 Sleeve 8 Opening Part 9 Opening reinforcement 10 Surface plate 11 Side frame 12 Plate piece for vertical piece configuration 13 Plate piece for horizontal piece configuration
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) E04C 3/20 B28B 23/06 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) E04C 3/20 B28B 23/06
Claims (2)
配筋量の鉄筋が内臓された溝型断面のプレキャストコン
クリート部材における相対する一双の垂直部片の対向面
に、設備配管用のスリーブの外径に対応した径で同軸上
に中心を有する円形状の凹窩をそれぞれ設け、このよう
な凹窩をプレキャストコンクリート部材の長手方向に間
隔をおいて複数設けてなることを特徴とする標準量配筋
化された薄肉プレキャストコンクリート梁。1. An opposed vertical piece of a pair of vertical pieces in a precast concrete member having a groove-shaped cross section in which a reinforcing bar having a standard reinforcing amount determined separately from a reinforcing bar of a final design is provided . Coaxial with a diameter corresponding to the outer diameter of the sleeve
In each case , a circular recess having a center is provided.
Between the recesses in the longitudinal direction of the precast concrete member
A thin precast concrete beam with a standard amount of reinforcement, characterized by being provided with a plurality of spaces.
り相対する一双の垂直部片とからなり、前記一双の垂直
部片の対向面には、設備配管用のスリーブの外径に対応
した径で同軸上に中心を有する円形状の凹窩がそれぞれ
設けられ、最終設計の配筋とは別に決定された標準配筋
量の鉄筋が内臓された薄肉プレキャストコンクリート梁
の製造方法であって、 定盤上において、前記一双の垂直部片がそれぞれ前記底
部片から該底部片の外側に倒れた状態で形成されるよう
に、前記標準配筋量の鉄筋を配筋しコンクリートを打設
して前記一双の垂直部片の構成用の板状片を作り、 次に、定盤上において前記一双の板状片を建て起こし、 次に、建て起こされた前記板状片を互いに離間接近する
方向に動かすことで梁幅を調整し、 次に、定盤上において前記梁幅が調整された一双の板状
片の間にコンクリートを打設して前記底部片の構成用の
板状片を作る、 ことを特徴とする薄肉プレキャストコンクリート梁の製
造方法。 2. A bottom piece and rising from both sides of the bottom piece.
A pair of vertical pieces opposed to each other,
On the opposite side of the piece, it corresponds to the outer diameter of the sleeve for equipment piping
Circular cavities centered on the same diameter
Standard bar arrangements established and determined separately from the final design bar arrangements
Thin precast concrete beams with built-in rebar
The method according to claim 1 , wherein on the surface plate, the pair of vertical pieces
So that it is formed in a state of falling from the piece to the outside of the bottom piece
Then, reinforce the standard reinforcing bar and place concrete.
To make a plate-like piece for the construction of the pair of vertical pieces, then erect the pair of plate-like pieces on a platen, and then separate the approached plate-like pieces away from each other Do
Adjust the beam width by moving in the direction, then a more that the beam width is adjusted in the surface plate plate
Casting concrete between the pieces to construct the bottom piece
Manufacture of thin-walled precast concrete beams, characterized by making plate-like pieces
Construction method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33674893A JP3351886B2 (en) | 1993-12-28 | 1993-12-28 | Thin-walled precast concrete beam and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33674893A JP3351886B2 (en) | 1993-12-28 | 1993-12-28 | Thin-walled precast concrete beam and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07197598A JPH07197598A (en) | 1995-08-01 |
| JP3351886B2 true JP3351886B2 (en) | 2002-12-03 |
Family
ID=18302359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33674893A Expired - Fee Related JP3351886B2 (en) | 1993-12-28 | 1993-12-28 | Thin-walled precast concrete beam and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3351886B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106193445A (en) * | 2016-08-31 | 2016-12-07 | 济南市人防建筑设计研究院有限责任公司 | A kind of prestressing force groove type plate that can be used for 5 grades of civil air defense constructions and installations |
| JP2021059896A (en) * | 2019-10-07 | 2021-04-15 | 株式会社竹中工務店 | Precast member, and beam |
-
1993
- 1993-12-28 JP JP33674893A patent/JP3351886B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07197598A (en) | 1995-08-01 |
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