JP2000218606A - Formed form for hollow floor slab - Google Patents
Formed form for hollow floor slabInfo
- Publication number
- JP2000218606A JP2000218606A JP1978599A JP1978599A JP2000218606A JP 2000218606 A JP2000218606 A JP 2000218606A JP 1978599 A JP1978599 A JP 1978599A JP 1978599 A JP1978599 A JP 1978599A JP 2000218606 A JP2000218606 A JP 2000218606A
- Authority
- JP
- Japan
- Prior art keywords
- shape
- floor slab
- concrete
- longitudinal direction
- hollow floor
- 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.)
- Pending
Links
Landscapes
- Bridges Or Land Bridges (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、道路高架橋、鉄道
橋、河川橋等に使用される中空床版における型枠に係
り、更に詳しくは、型枠の低コスト化と軽量化及び施工
容易化を図る合成樹脂発泡材製型枠の形状に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork for a hollow floor slab used for road viaducts, railway bridges, river bridges, and the like, and more particularly, to cost reduction, weight reduction and ease of construction of the formwork. The present invention relates to a shape of a synthetic resin foam material form.
【０００２】[0002]
【従来の技術】従来、コンクリート構造物の内部に中空
部を設けたスラブや高架橋が、図５に示すように、施工
性や製造コスト、薄版化及び長スパン化の点から多用さ
れている。例えば、道路高架橋の中空床版を形成する場
合には、図５（ロ）に示すように、中空の帯鋼製の円筒
管７を用い、その長さを所要長さに切断して、高架橋９
の建築現場に運び込む。2. Description of the Related Art Conventionally, as shown in FIG. 5, slabs and viaducts having a hollow portion in a concrete structure are frequently used in view of workability, manufacturing cost, thinning and long span. . For example, when forming a hollow slab of a road viaduct, as shown in FIG. 5 (b), a hollow tubular steel tube 7 is used, and the length thereof is cut to a required length. 9
To the construction site.
【０００３】図６に示すように、予め、床版用型枠にコ
ンクリート製取付部材３ａを設置し、前記円筒管用で該
円筒管７の外周部の一部に沿った形状の受け部を有する
金属製受け台２ａを取り付ける。As shown in FIG. 6, a concrete mounting member 3a is previously set on a floor slab, and has a receiving portion for the cylindrical tube along a part of an outer peripheral portion of the cylindrical tube 7. The metal receiving base 2a is attached.
【０００４】そして、中空の円筒管７の長手方向に沿っ
て主筋を配設し、更に、スターラップ４を配筋した後
に、図６に示すように、前記円筒管７を型枠内に落とし
込み、前記取付部材３ａに一端を螺合し棒状のボルト５
を立設して、長手方向の所定間隔毎に金属製バンド６を
円筒管に巻き付け、該バンド６の取付端部（Ｕ金具）に
挿通させた前記ボルト５のネジ部にワッシャを通しナッ
ト８をそれぞれ締結して、図７に示すように、円筒管７
を型枠内に固定する。[0004] After the main reinforcement is arranged along the longitudinal direction of the hollow cylindrical tube 7 and the stirrup 4 is further arranged, the cylindrical tube 7 is dropped into a mold as shown in FIG. And a rod-shaped bolt 5 having one end screwed to the mounting member 3a.
The metal band 6 is wound around the cylindrical tube at predetermined intervals in the longitudinal direction, and a washer is passed through the screw portion of the bolt 5 inserted through the mounting end (U metal fitting) of the band 6, and a nut 8 is inserted. Are respectively fastened, as shown in FIG.
Is fixed in the formwork.
【０００５】この後に、型枠内にコンクリートを打設
し、前記円筒管７による中空床版の道路高架橋９が完成
するものである。[0005] Thereafter, concrete is poured into the formwork to complete the road viaduct 9 of the hollow slab with the cylindrical pipe 7.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、前記円
筒管の固定後に、コンクリートを打設すると、円筒管の
左右空隙部の一方側からコンクリートが打設されるの
で、そのコンクリート圧によって、円筒管が打設側と反
対側に動いてしまい、所定の位置に円筒管を埋設できな
いという課題がある。また、コンクリート打設量も多い
という課題もある。本発明に係る発泡型枠は、このよう
な課題を解消するために提案されるものである。However, if concrete is cast after fixing the cylindrical pipe, concrete is cast from one side of the left and right gaps of the cylindrical pipe. There is a problem that it moves to the side opposite to the casting side, and the cylindrical pipe cannot be buried in a predetermined position. There is also a problem that the amount of concrete poured is large. The foam mold according to the present invention is proposed to solve such a problem.
【０００７】[0007]
【課題を解決するための手段】本発明に係る発泡型枠の
上記課題を解決するための要旨は、コンクリート用型枠
の中に設置されコンクリート中空部を形成するための中
空床版用発泡型枠であって、発泡型枠においてその長手
方向に略一様な断面形状が、長手方向に直交する上下方
向における、上半分が半円形状，半楕円形状または半多
角形状のいずれかで、下半分が略矩形状の馬蹄形状であ
ることである。The gist of the present invention for solving the above-mentioned problems of the foam mold according to the present invention is to provide a foam mold for a hollow floor slab which is installed in a concrete mold to form a concrete hollow portion. A frame, wherein the foam mold has a substantially uniform cross-sectional shape in the longitudinal direction, and an upper half in a vertical direction perpendicular to the longitudinal direction, wherein the upper half is a semicircular shape, a semi-elliptical shape, or a semi-polygonal shape; One half is a horseshoe shape having a substantially rectangular shape.
【０００８】本発明に係る中空床版用発泡型枠によれ
ば、図１に示すように、その断面形状が馬蹄形状である
ので、型枠内に設置した状態が、下部面が平坦であるこ
とから安定して載置される。また、型枠内に配筋された
鉄筋を使用して設置・固定することができる。更に、発
泡型枠の上部が半円形状，半楕円形状または半多角形状
等の応力を分散させる形状であるので、荷重による応力
が分散されるとともに、下部が矩形状なので図中の斜線
部分だけ、円形状である場合に比べてコンクリート打設
量が、約２０％程度削減されることになり、工費のコス
ト削減及び高架橋重量の軽量化に貢献するものとなる。According to the foaming mold for a hollow floor slab according to the present invention, as shown in FIG. 1, since the cross-sectional shape is a horseshoe shape, the lower surface is flat when installed in the mold. Therefore, it is stably placed. In addition, it can be installed and fixed by using reinforcing bars arranged in the formwork. Further, since the upper portion of the foaming form has a shape such as a semicircular shape, a semielliptical shape, or a semipolygonal shape for dispersing stress, the stress due to the load is dispersed, and since the lower portion has a rectangular shape, only the hatched portion in the figure is used. The amount of concrete poured is reduced by about 20% as compared with the case of a circular shape, which contributes to a reduction in construction cost and a reduction in the weight of the viaduct.
【０００９】[0009]
【発明の実施の形態】次に、本発明に係る中空床版用発
泡型枠について図面を参照して説明する。なお、発明の
理解容易のため従来例に対応する部分には従来例と同一
符号を付けて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a foaming mold for a hollow slab according to the present invention will be described with reference to the drawings. Note that, for easy understanding of the present invention, portions corresponding to the conventional example are denoted by the same reference numerals as the conventional example.
【００１０】本発明に係る中空床版用発泡型枠１は、図
２に示すように、その長手方向に略一様な断面形状（図
２（イ））が、馬蹄形状となっている。即ち、長手方向
に直交する上下方向における、上半分１ａが応力を分散
させる形状（半円形状、半楕円形状、半多角形状等）で
有れば良く、例えば、図示する一例として半円形状（例
えば、直径が約１２００ｍｍ）で、下半分１ｂが幅約１
２００ｍｍで高さが約６００ｍｍの略矩形状に形成され
る。As shown in FIG. 2, the foaming mold 1 for a hollow floor slab according to the present invention has a horseshoe shape in a substantially uniform cross-sectional shape in the longitudinal direction (FIG. 2A). That is, the upper half 1a in the vertical direction perpendicular to the longitudinal direction may have a shape that disperses stress (semicircular shape, semielliptical shape, semipolygonal shape, or the like). For example, the diameter is about 1200 mm), and the lower half 1b has a width of about 1 mm.
It is formed in a substantially rectangular shape with a height of 200 mm and a height of about 600 mm.
【００１１】また、この中空床版用発泡型枠１は、使用
状態においては、長手方向に数十ｍにもなるので、成型
上において、図２（ロ）に示すように、長手方向の長さ
を例えば、５００ｍｍ程度の分割体に成形する。[0011] Further, since the foaming mold 1 for a hollow floor slab can be several tens of meters in a longitudinal direction in a use state, it can be formed in a longitudinal direction as shown in FIG. For example, it is formed into a divided body of about 500 mm.
【００１２】この分割体を互いに長手方向に連結するた
めに、多角形状、円形状、円錐形状、多角錐形状等の凹
凸による連結手段が設けられている。該連結手段は、図
示した一例では、前面に円形状の凹部１ｃが設けられ、
後面に円形状の突部１ｄが設けられている。In order to connect the divided bodies to each other in the longitudinal direction, there is provided a connecting means having irregularities such as a polygonal shape, a circular shape, a conical shape, and a polygonal pyramid shape. In the illustrated example, the connecting means is provided with a circular concave portion 1c on the front surface,
A circular protrusion 1d is provided on the rear surface.
【００１３】前記分割体の中空床版用発泡型枠１を、図
３に示すように、前記凹部１ｃと突部１ｄにより互いに
首尾連接して、一本の長い発砲型枠とするものである。As shown in FIG. 3, the foaming mold 1 for a hollow floor slab of the divided body is connected to each other by the concave portion 1c and the protrusion 1d to form one long foaming mold. .
【００１４】なお、この中空床版用発泡型枠１は、例え
ば、難燃性のポリスチレンビーズを材質とし、その発泡
倍率は約７０倍（単位体積重量：１４ｋｇｆ／ｍ３）
で、他の例として３０倍〜９０倍とするものである。The foaming mold 1 for a hollow slab is made of, for example, flame-retardant polystyrene beads, and has an expansion ratio of about 70 (unit weight: 14 kgf / m3).
In another example, the magnification is 30 to 90 times.
【００１５】以上のような中空床版用発泡型枠１を型枠
内に設置するにはその一例として、図４に示すように、
型枠上に金属製の受け台２を設置し、中央穴の上部にネ
ジ溝を刻設したコンクリート製の取付部材３を設置し、
主筋とスターラップ４を配筋した後に、ボルト５を前記
取付部材３に一端を螺合させて立設し、金属製バンド６
を発泡型枠１の上部に巻き付けて、バンド端部の取付部
に挿通させた前記ボルトのネジ部に上方からナットを締
結して、発泡型枠１を型枠に固定するものである。As an example of installing the foaming mold 1 for a hollow floor slab in the mold as described above, as shown in FIG.
A metal cradle 2 is installed on the formwork, and a concrete mounting member 3 having a thread groove formed above the center hole is installed.
After the main reinforcement and the stirrup 4 are arranged, the bolt 5 is screwed at one end to the mounting member 3 and erected.
Is wound around the upper part of the foaming mold 1 and a nut is fastened from above to a screw portion of the bolt inserted through the mounting portion at the end of the band, thereby fixing the foaming mold 1 to the mold.
【００１６】その後、型枠内にコンクリートを打設す
る。例えば、コンクリートが発泡型枠１の片側から打設
されても、左右方向の横圧に対して発泡型枠１の下部が
矩形状で形状的に安定した形状をしていることから、横
ズレが生じにくいものである。これによって、コンクリ
ートのかぶり厚が所定のかぶり厚さに維持されるもので
ある。Thereafter, concrete is poured into the formwork. For example, even if concrete is cast from one side of the foaming form 1, since the lower part of the foaming form 1 is rectangular and has a stable shape in response to a lateral pressure in the left-right direction, a lateral displacement is caused. Is unlikely to occur. Thereby, the cover thickness of the concrete is maintained at a predetermined cover thickness.
【００１７】[0017]
【発明の効果】以上説明したように、本発明に係る中空
床版用発泡型枠は、コンクリート用型枠の中に設置され
コンクリート中空部を形成するための中空床版用発泡型
枠であって、発泡型枠においてその長手方向に略一様な
断面形状が、長手方向に直交する上下方向における、上
半分が半円形状，半楕円形状または半多角形状のいずれ
かで、下半分が略矩形状の馬蹄形状であるので、下部面
が平坦であることから型枠内に設置した状態が安定して
載置されるとともに、型枠内に配筋された鉄筋を使用し
て設置・固定することができて施工が容易で工費低減と
なるという優れた効果を奏するものである。更に、発泡
型枠の上部が半円形状等の応力を分散する形状であるの
で、荷重による応力が分散されるとともに、下部が矩形
状なので、全体が円形状である場合に比べてコンクリー
ト打設量が削減されて、工費のコスト削減及び高架橋重
量の軽量化となるという優れた効果を奏するものであ
る。As described above, the foaming mold for a hollow floor slab according to the present invention is a foaming mold for a hollow floor slab to be installed in a concrete formwork to form a concrete hollow portion. In the foaming mold, the substantially uniform cross-sectional shape in the longitudinal direction is such that, in the vertical direction perpendicular to the longitudinal direction, the upper half is either a semicircular shape, a semielliptical shape or a semipolygonal shape, and the lower half is substantially Since it has a rectangular horseshoe shape, its lower surface is flat, so it can be stably placed in the formwork and installed and fixed using reinforcing bars arranged in the formwork Therefore, the present invention has an excellent effect that the construction is easy and the construction cost is reduced. Furthermore, since the upper part of the foaming form has a semi-circular shape or the like that disperses stress, stress due to load is dispersed, and the lower part is rectangular, so that concrete is cast in comparison with the case where the whole is circular. The effect of the present invention is that the amount is reduced and the cost for construction is reduced and the weight of the high bridge is reduced.
【図１】本発明に係る中空床版用発泡型枠の断面図であ
る。FIG. 1 is a cross-sectional view of a foam mold for a hollow slab according to the present invention.
【図２】同本発明に係る中空床版用発泡型枠の正面図
（イ）と、側面図（ロ）である。FIG. 2 is a front view (a) and a side view (b) of the foam mold for a hollow floor slab according to the present invention.
【図３】同本発明に係る中空床版用発泡型枠を首尾連結
した状態の側面図である。FIG. 3 is a side view showing a state in which the foaming mold for a hollow floor slab according to the present invention has been successfully connected.
【図４】同本発明に係る中空床版用発泡型枠の使用状態
において、型枠内に固定した状態の正面図である。FIG. 4 is a front view showing a state where the foaming mold for a hollow floor slab according to the present invention is fixed in the mold in a use state.
【図５】中空部（ボイド）を有するコンクリートスラブ
の断面図（イ）と、同高架橋の断面図である。FIG. 5 is a sectional view (a) of a concrete slab having a hollow portion (void) and a sectional view of the viaduct.
【図６】円筒鋼管の取付状態を示す分解説明用斜視図で
ある。FIG. 6 is an exploded perspective view showing an attached state of a cylindrical steel pipe.
【図７】円筒鋼管を型枠に固定した状態の正面図（イ）
と側面図（ロ）である。FIG. 7 is a front view showing a state in which the cylindrical steel pipe is fixed to a formwork (a).
And a side view (b).
１ 中空床版用発泡型枠、１ａ 発泡型枠の上半分、１
ｂ 発泡型枠の下半分、１ｃ 凹部、１ｄ 突部、２
受け台、３ 取付部材、４ スターラップ、５ ボル
ト、６ バンド。1 Foam form for hollow floor slab, 1a Upper half of foam form, 1
b Lower half of foam form, 1c recess, 1d protrusion, 2
Cradle, 3 mounting members, 4 stirrups, 5 bolts, 6 bands.
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１１年２月２日（１９９９．２．２）[Submission date] February 2, 1999 (1999.2.2)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１４[Correction target item name] 0014
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１４】なお、この中空床版用発泡型枠１は、例え
ば、難燃性のポリスチレンビーズを材質とし、その発泡
倍率は約７０倍（単位体積重量：１４ｋｇｆ／ｍ ３ ）
で、他の例として３０倍〜９０倍とするものである。The foaming mold 1 for a hollow slab is made of, for example, flame-retardant polystyrene beads, and has an expansion ratio of about 70 times (unit volume weight: 14 kgf / m 3 ).
In another example, the magnification is 30 to 90 times.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｅ０４Ｂ 5/32 Ｅ０１Ｄ 21/02 Ｆターム(参考） 2D059 AA14 DD16 GG02 4G053 AA02 AA07 BB09 BC02 BC07 BD01 BE04 CA22 EA43 EB02 4G058 AA01 AB03 AC07 AF06 FA04 FA20 FA22 FA31 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI theme coat ゛ (Reference) E04B 5/32 E01D 21/02 F-term (Reference) 2D059 AA14 DD16 GG02 4G053 AA02 AA07 BB09 BC02 BC07 BD01 BE04 CA22 EA43 EB02 4G058 AA01 AB03 AC07 AF06 FA04 FA20 FA22 FA31
Claims (1)
クリート中空部を形成するための中空床版用発泡型枠で
あって、 発泡型枠においてその長手方向に略一様な断面形状が、
長手方向に直交する上下方向における、上半分が半円形
状，半楕円形状または半多角形状のいずれかで、下半分
が略矩形状の馬蹄形状であること、 を特徴とする中空床版用発泡型枠。1. A foaming mold for a hollow slab, which is installed in a concrete formwork and forms a concrete hollow portion, wherein the foaming form has a substantially uniform cross-sectional shape in the longitudinal direction.
In the vertical direction perpendicular to the longitudinal direction, the upper half has a semicircular shape, a semielliptical shape, or a semipolygonal shape, and the lower half has a substantially rectangular horseshoe shape. Formwork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978599A JP2000218606A (en) | 1999-01-28 | 1999-01-28 | Formed form for hollow floor slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978599A JP2000218606A (en) | 1999-01-28 | 1999-01-28 | Formed form for hollow floor slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000218606A true JP2000218606A (en) | 2000-08-08 |
Family
ID=12008999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978599A Pending JP2000218606A (en) | 1999-01-28 | 1999-01-28 | Formed form for hollow floor slab |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000218606A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100410466C (en) * | 2005-02-18 | 2008-08-13 | 刘喜平 | Process for producing hollow slab seal end thin wall tube |
| CN102359066A (en) * | 2011-08-05 | 2012-02-22 | 中国神华能源股份有限公司 | Bridge |
| CN105848839A (en) * | 2016-03-31 | 2016-08-10 | 中交第二航务工程局有限公司 | Stub matching prefabricated form system used for corrugated steel web composite structure girder bridge |
-
1999
- 1999-01-28 JP JP1978599A patent/JP2000218606A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100410466C (en) * | 2005-02-18 | 2008-08-13 | 刘喜平 | Process for producing hollow slab seal end thin wall tube |
| CN102359066A (en) * | 2011-08-05 | 2012-02-22 | 中国神华能源股份有限公司 | Bridge |
| CN102359066B (en) * | 2011-08-05 | 2014-06-18 | 中国神华能源股份有限公司 | Bridge |
| CN105848839A (en) * | 2016-03-31 | 2016-08-10 | 中交第二航务工程局有限公司 | Stub matching prefabricated form system used for corrugated steel web composite structure girder bridge |
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