JPS5817907A - Finishing of opening part of structural body - Google Patents
Finishing of opening part of structural bodyInfo
- Publication number
- JPS5817907A JPS5817907A JP56116597A JP11659781A JPS5817907A JP S5817907 A JPS5817907 A JP S5817907A JP 56116597 A JP56116597 A JP 56116597A JP 11659781 A JP11659781 A JP 11659781A JP S5817907 A JPS5817907 A JP S5817907A
- Authority
- JP
- Japan
- Prior art keywords
- opening
- lower half
- precast concrete
- finishing
- concrete plate
- 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
- Bridges Or Land Bridges (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は例えば棧橋用基礎杭等構造物躯体のスラブ開口
部の仕上げ工法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a finishing method for openings in slabs of structures such as foundation piles for bridges, for example.
先に、第１図、第２図について従来の仕上げ工法の一例
を説明し、よって本発明の目的を明らかにする。First, an example of a conventional finishing method will be explained with reference to FIGS. 1 and 2, thereby clarifying the purpose of the present invention.
第１図は従来工法を示す全体の縦断正面図、第２図は要
部の縦断正面図で、ベース１からコンクリートスラブ２
までの高さが非常に高い場合、このスラブ２に形成した
開口部３（この開口部３は、棧橋基礎杭や資材の揚重等
のために形成されたものである。）にコンクリートを充
填し−Ｃ仕上げるには、まず枠組足場４を多数段、最上
部が上記開口部３の近傍に位置するように組上げる。Figure 1 is a vertical front view of the entire structure showing the conventional construction method, and Figure 2 is a vertical front view of the main parts, from base 1 to concrete slab 2.
If the height is very high, fill the opening 3 formed in this slab 2 (this opening 3 is for lifting the foundation piles of the bridge, materials, etc.) with concrete. To finish the process, first, frame scaffolding 4 is assembled in multiple stages so that the top is located near the opening 3.
次いで、人間が足場４の最上段に登り、開口部３の下端
面に型枠５をセットし、開口部３内に鉄筋６を配筋し、
開口部３の上方からコンクリートを打設する。Next, a person climbs to the top of the scaffolding 4, sets the formwork 5 on the lower end surface of the opening 3, arranges reinforcing bars 6 inside the opening 3,
Concrete is poured from above the opening 3.
コンクＩＪ −ト養生期間経過後に、型枠５を脱枠し、
研シ工事及び左官仕上げが終了したならば、枠組足場４
を解体するものであった。After the concrete IJ-to curing period has elapsed, the formwork 5 is removed,
Once the grinding work and plastering are completed, frame scaffolding 4
It was to dismantle the
以上述謳たように従来工法は、スラブ下面の型枠組、研
シ、左官仕上げがあるため、足場の組数しか必要で、従
って足場工の人゛工がかかシ、コスト高となる他に、高
所作業のため危険性も多い。As mentioned above, in the conventional construction method, only the number of sets of scaffolding is required because the formwork, sanding, and plastering are required for the underside of the slab, which requires more labor for scaffolding, which increases costs. Moreover, there are many dangers due to working at heights.
また、全体的に工程数が多く、仕上げ完了まで時間かが
かるものであった。In addition, the overall number of steps was large, and it took a long time to complete the finish.
本発明の目的は上記不都合を解消し、まず型枠やＦｆｒ
シ等の仕上げを不要にでき、その結果足場の組立、解体
もなくなシ、少ない工程で低廉かつ迅速に、しかも安全
に行なうことができる構造物躯体開口部の仕上げ工法を
提供することにある。The purpose of the present invention is to solve the above-mentioned inconveniences, and first, formwork and Ffr.
To provide a finishing method for an opening in a structure frame that can be done inexpensively, quickly, and safely with fewer steps, eliminating the need for finishing such as holes and assembling and disassembling scaffolding. .
しかしてこの目的は本発明によれば、躯体コンクリート
スラブの開口部下半分の周面をテーパー状に形成し、こ
の開口部下半分に同一形状のプレキャストコンクリート
板を嵌込んだ後に、残余の開口部上半分にコンクリート
を打設して仕上げることによシ達成される。However, according to the present invention, the purpose of the lever is to form the peripheral surface of the lower half of the opening in the concrete slab into a tapered shape, and after fitting a precast concrete plate of the same shape into the lower half of the opening, This is accomplished by pouring concrete in half and finishing.
以下、図面について本発明の実施例を詳細に説明する。Embodiments of the present invention will be described in detail below with reference to the drawings.
で、コンクリートスラブ２に開口部３を形成する際に、
開口部３の下半分３ｂの周囲を下方向に向って広がるテ
ーパー状に形成する。When forming the opening 3 in the concrete slab 2,
The periphery of the lower half 3b of the opening 3 is formed into a tapered shape that widens downward.
この開口部３の形成方法としては箱抜型枠を使用するが
、上記下半分３ｂ部分についてはスチール製の型枠を用
いるとよい。A box-cutting mold is used to form the opening 3, but it is preferable to use a steel mold for the lower half 3b.
一方、第３図中７は上記開口部３の下半分３ｂに合致す
る形状のプレキャストコンクリート板である。On the other hand, numeral 7 in FIG. 3 is a precast concrete plate having a shape that matches the lower half 3b of the opening 3.
第４図は同プレキャストコンクリート板７の詳細を示す
縦断正面図で、中の鉄筋にはワイヤーメツシュ８を使用
した。FIG. 4 is a longitudinal sectional front view showing details of the same precast concrete plate 7, in which wire mesh 8 was used as the reinforcing steel inside.
このワイヤーメツシュ８に一端を係止して、吊下用の鉄
筋９と番線１０とをプレキャストコンクリート板７の上
面よシ突出させる。One end is locked to this wire mesh 8, and a reinforcing bar 9 and a wire 10 for suspension are made to protrude from the upper surface of the precast concrete plate 7.
かかるプレキャストコンクリート板７を第３図に示すよ
うに、鉄筋９及び番線１０を用いて開口部３の下方よシ
引張シ上げ、同開口部３の下半分３ｂに嵌込む。As shown in FIG. 3, the precast concrete plate 7 is pulled upward from the opening 3 using reinforcing bars 9 and wires 10, and is fitted into the lower half 3b of the opening 3.
その後、上記プレキャストコンクリート板７を型枠式り
簿、用いて、開口部３の残余の上半分３αにコンクリー
トを打設して開口部の仕上げを完了する。Thereafter, using the precast concrete plate 7 as a formwork, concrete is poured into the remaining upper half 3α of the opening 3 to complete the finishing of the opening.
このようにプレキャストコンクリート板を型枠式りに用
いることで、型枠作業がなく、また研シ等の仕上げもな
くなるので、足場を組立てる必要もない。By using precast concrete plates for formwork in this way, there is no need for formwork work, and there is no need for finishing such as sanding, so there is no need to assemble scaffolding.
次に、第５図は本発明工法の第２実施例を示す縦断正面
図である。Next, FIG. 5 is a longitudinal sectional front view showing a second embodiment of the construction method of the present invention.
すなわち、コンクリートスラブ２に開口部３を形成する
際に、開口部３の下半分３ｂの周面を下方向にすぼまる
テーパー状に形成する。That is, when forming the opening 3 in the concrete slab 2, the peripheral surface of the lower half 3b of the opening 3 is formed into a tapered shape that tapers downward.
一方、図中７′は上記開口部３の下半分３ ｂ’に合致
する形状のプレキャストコンクリート板で、ワイヤーメ
ツシュ等を鉄筋として用いる点は上記第１実施例のプレ
キャストコンクリート板７と同じであるが、形状は板７
が下方向に広がるテーパー周面を有するものであったの
に対し、このプレキャストコンクリート板７′は下方向
にすぼまるテーパー周面を有する点が異なる。On the other hand, 7' in the figure is a precast concrete plate having a shape that matches the lower half 3b' of the opening 3, and is the same as the precast concrete plate 7 of the first embodiment in that wire mesh or the like is used as reinforcing bars. There is, but the shape is plate 7
The precast concrete plate 7' has a tapered circumferential surface that widens downward, whereas this precast concrete plate 7' differs in that it has a tapered circumferential surface that narrows downward.
このようなプレキャストコンクリート板１を開口部３の
上方開口から落込んで、開口部３の下半分３ ｂ’に蓋
をするような状態で嵌込む。Such a precast concrete plate 1 is dropped through the upper opening of the opening 3 and is fitted into the lower half 3b' of the opening 3 so as to cover it.
その後、開口部３の残余の上半分３αに板７′を型枠式
りに用いてコンクリートを打設して仕上げを完了する。Thereafter, concrete is placed in the remaining upper half 3α of the opening 3 using the plate 7' as a formwork to complete the finishing.
このようにすれば、プレキャストコンクリート板７′は
開口部３の下半分３ ｂ’のテーパーで係止されるので
、↓記第１実施例で述べたようにプレキャストコンクリ
ート板をベース１からスラブ２まで引張シ上げる手間が
不要となシ、より容易かつ短時間で工事を行なうことが
できる。In this way, the precast concrete plate 7' is locked at the taper of the lower half 3b' of the opening 3, so the precast concrete plate is moved from the base 1 to the slab 2 as described in the first embodiment below. There is no need to take the trouble of pulling it up to a certain level, and the work can be done more easily and in a shorter time.
以上述べたように、本発明の構造物躯体開口部の仕上げ
工法は、躯体コンクリートスラブの開口部下半分の周面
をテーパー状に形成し、この開口部下半分に同一形状の
プレキャストコンクリート板を嵌込んだ後に、同プレキ
ャスト板を型枠式りに用いて残余の開口部上半分にコン
クリートを打設して仕上げるものであるから、従来のよ
うな型枠の取付、脱型作業及び研り等の仕上げ作業が不
要となり、その結果このような作業を行なうため喝し
の足場組立、解体もなくなシ、工期を大幅に短縮して低
廉に行なえるとともに、高所作業もなく安全性を高める
こともできるものである。As described above, in the finishing method of the opening in a structure frame according to the present invention, the peripheral surface of the lower half of the opening in the concrete slab of the frame is formed into a tapered shape, and a precast concrete plate of the same shape is fitted into the lower half of the opening. After that, the same precast board is used as a formwork and concrete is poured into the upper half of the remaining opening, so there is no need for conventional formwork installation, demolding work, and sanding. There is no need for finishing work, and as a result, there is no need to assemble or dismantle the scaffolding to perform such work, and the construction period can be significantly shortened and carried out at low cost, and there is no need to work at heights, increasing safety. It is also possible.
第１図は従来工法を示す全体の縦断正面図、第２図は同
上要部の縦断正面図、第６図は本発明の仕上げ工法や第
１実施例を示す縦断正面図、第、４図は同上第１実施例
で用いるプレキャストコンクリート板の縦断正面図、第
５図は本発明の第２実施例を示す縦断正面図である。
１・・・・・・ベース ２・・・・・・コンクリ−ト
スラフ３・・・・・・開口部 ３α・・・・・・上半
分３ｂ、３ｂ’・・・・・・下半分 ４・・・・・・
枠組足場５・・・・・・型枠 ６・・・・・・鉄筋７
．７′・・・・・・プレキャストコンクリート板８・・
・・・・ワイヤーメツシュ ９・・・・・・鉄筋
１０・・・・・・番線第１図
第２図
第３図
第４図Fig. 1 is an overall longitudinal sectional front view showing the conventional construction method, Fig. 2 is a longitudinal sectional front view of the main parts of the same, Fig. 6 is a longitudinal sectional front view showing the finishing method of the present invention and the first embodiment, Figs. 5 is a longitudinal sectional front view of a precast concrete plate used in the first embodiment of the present invention, and FIG. 5 is a longitudinal sectional front view showing a second embodiment of the present invention. 1... Base 2... Concrete slough 3... Opening 3α... Upper half 3b, 3b'... Lower half 4.・・・・・・
Frame scaffolding 5...Formwork 6...Reinforcement bar 7
．． 7'...Precast concrete plate 8...
...Wire mesh 9...Reinforcement bar
10... Line Figure 1 Figure 2 Figure 3 Figure 4
Claims (1)
テーパー状に形成し、この開口部下半分に同一形状のプ
レキャストコンクリート板を嵌込んだ後に、残余の開口
部上半分にコンクリートを打設して仕上げることを特徴
と、する構造物躯体開口部の仕上げ工法。 （２） 開口部下半分の周面を下方向に広がるテーパ
ー状に形成し、プレキャストコンクリート板は下方から
引張シ上げて嵌込むものである特許請求の範囲第１項記
載の構造物躯体開口部の仕上工法。 （３） 開口部下半分の周面を下方向にすぼするテー
パー状に形成し、プレキャストコンクリート板は上方か
ら落込んで嵌込むものである特許請求の範囲第１項記載
の構造物躯体開口部の仕上げ工法。[Claims] (After forming the peripheral surface of the lower half of the opening of the 11-frame concrete slab into a tapered shape and fitting a precast concrete plate of the same shape into the lower half of this opening, the remaining upper half of the opening is filled with concrete. (2) The lower half of the opening is formed into a tapered shape that spreads downward, and the precast concrete plate is pulled up from below by tension. A finishing method for an opening in a structure frame according to claim 1, in which the opening in a structure frame is fitted into the opening. (3) The lower half of the opening has a tapered shape that tapers downward, and the precast concrete plate 2. A finishing method for an opening in a structure frame according to claim 1, wherein the opening is depressed and fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56116597A JPS5817907A (en) | 1981-07-25 | 1981-07-25 | Finishing of opening part of structural body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56116597A JPS5817907A (en) | 1981-07-25 | 1981-07-25 | Finishing of opening part of structural body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5817907A true JPS5817907A (en) | 1983-02-02 |
| JPS6224563B2 JPS6224563B2 (en) | 1987-05-29 |
Family
ID=14691080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56116597A Granted JPS5817907A (en) | 1981-07-25 | 1981-07-25 | Finishing of opening part of structural body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5817907A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009007747A (en) * | 2007-06-26 | 2009-01-15 | Toa Harbor Works Co Ltd | Method for repairing elevated floor slab |
| JP2009108530A (en) * | 2007-10-29 | 2009-05-21 | Toa Harbor Works Co Ltd | Panel material connecting structure |
| JP2019173269A (en) * | 2018-03-26 | 2019-10-10 | 三井住友建設株式会社 | Method to construct concrete bridge girder with frame structure and temporary closure structure usable on this method |
-
1981
- 1981-07-25 JP JP56116597A patent/JPS5817907A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009007747A (en) * | 2007-06-26 | 2009-01-15 | Toa Harbor Works Co Ltd | Method for repairing elevated floor slab |
| JP2009108530A (en) * | 2007-10-29 | 2009-05-21 | Toa Harbor Works Co Ltd | Panel material connecting structure |
| JP2019173269A (en) * | 2018-03-26 | 2019-10-10 | 三井住友建設株式会社 | Method to construct concrete bridge girder with frame structure and temporary closure structure usable on this method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6224563B2 (en) | 1987-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5817907A (en) | Finishing of opening part of structural body | |
| CN112609986A (en) | Method for controlling pouring forming quality of concrete batter post | |
| DE50104073D1 (en) | Process for the construction of several similar structures with a frusto-conical shape | |
| JPH04334405A (en) | Manufacture of precast concrete beam | |
| US3233027A (en) | Method of making prestressed concrete beams | |
| JPH0860825A (en) | Construction method of staircase | |
| JP3511159B2 (en) | Concrete casting method | |
| JPH05287802A (en) | Construction method of centrifugal casting pca column | |
| CN109057159A (en) | Prefabricated laminated superposed column, assembled architecture body and assembled architecture body method of construction | |
| JP2947979B2 (en) | Method of forming through holes in precast concrete members | |
| JP3481986B2 (en) | Precast concrete foundation slab and method of constructing concrete foundation floor | |
| JP2533344B2 (en) | Method for manufacturing half PCa board | |
| CN219365404U (en) | Post-cast strip bearing structure | |
| JPS5830988B2 (en) | How to reinforce existing reinforced concrete floor slabs | |
| JPH05278022A (en) | Molding method of hollow precast concrete member | |
| JPH0730626B2 (en) | Balcony Slab Construction Equipment | |
| JPS5953981B2 (en) | Formwork method and its equipment | |
| JPH0447102B2 (en) | ||
| JPS598846A (en) | Construction of balcony | |
| JP2759229B2 (en) | Construction method of RC construction stairs | |
| JPS58195630A (en) | Concrete placement method | |
| JPS62253821A (en) | Construction of concrete floor slab | |
| JPH01182464A (en) | Reinforcing steel cage for preventing separation of concrete | |
| JP2610462B2 (en) | Method for manufacturing precast concrete member | |
| JPS6342808A (en) | Manufacture of concrete block |