JP2886160B1 - Floor structural materials - Google Patents

Floor structural materials

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Publication number
JP2886160B1
JP2886160B1 JP13625598A JP13625598A JP2886160B1 JP 2886160 B1 JP2886160 B1 JP 2886160B1 JP 13625598 A JP13625598 A JP 13625598A JP 13625598 A JP13625598 A JP 13625598A JP 2886160 B1 JP2886160 B1 JP 2886160B1
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JP
Japan
Prior art keywords
chord
chordal
floor
bar
deck 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.)
Expired - Lifetime
Application number
JP13625598A
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Japanese (ja)
Other versions
JPH11324203A (en
Inventor
芳平 野村
Original Assignee
沼田金属工業株式会社
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Priority to JP13625598A priority Critical patent/JP2886160B1/en
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Publication of JP2886160B1 publication Critical patent/JP2886160B1/en
Publication of JPH11324203A publication Critical patent/JPH11324203A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

【要約】 【課題】 デッキプレートの上面に床鉄筋を取り付けた
構成の床構造材において、床鉄筋の製造に要する専用設
備を削減して大型デッキを低コストに製造可能なように
する。 【解決手段】 デッキプレート11に取り付けられる床
鉄筋を、端部固定材12と、上弦筋13及び下弦筋14
と、これら上弦筋及び下弦筋を連結状態で支持する連結
支持筋15とで構成する。そして、この連結支持筋15
を、所定長さの1本の鉄筋材を折り曲げ形成してなるも
ので、リング状に曲成された上弦筋及び下弦筋の各保持
部17・18と、この上弦筋及び下弦筋の両保持部間を
結ぶ直線状の斜材部19と、下弦筋保持部から垂下した
脚部20とを有するものとし、その斜材部が全体として
ラチスを形成するように上弦筋及び下弦筋の軸線方向に
複数設ける。
An object of the present invention is to provide a floor structural member having a structure in which a floor reinforcing bar is attached to an upper surface of a deck plate. SOLUTION: A floor reinforcing bar attached to a deck plate 11 includes an end fixing member 12, an upper chordal bar 13 and a lower chordal bar 14.
And a connecting support muscle 15 for supporting the upper and lower chord muscles in a connected state. And, the connecting support bar 15
Are formed by bending a single reinforcing material having a predetermined length, and holding portions 17 and 18 of upper and lower chords bent in a ring shape, and holding of both the upper and lower chords It has a straight diagonal portion 19 connecting the portions and a leg portion 20 hanging from the lower chordal muscle holding portion, and the axial direction of the upper and lower chordal muscles so that the diagonal portion forms a lattice as a whole. Are provided.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、デッキプレートに
床鉄筋を取り付けた状態で工場生産し、これを建築現場
に搬入して設置し、当該床鉄筋付のデッキプレートを捨
て型枠としてコンクリートを打設して建物の床スラブを
構成するための床構造材に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of producing a plant in a state where a floor reinforcing bar is attached to a deck plate, carrying the same to a construction site and installing the same. The present invention relates to a floor structural material to be cast to form a floor slab of a building.

【0002】[0002]

【従来の技術】この種の床構造材としては、例えば実公
平2−29137号公報などに開示された構造のものが
ある。
2. Description of the Related Art As this kind of floor structural material, there is, for example, a structure disclosed in Japanese Utility Model Publication No. 2-29137.

【0003】これらの床構造材1は、例えば図1で示す
ように、長手方向に沿って補強リブ加工が施されたデッ
キプレート2と、このデッキプレート2の上面に対して
補強リブと直角な短手方向に沿って配設した支持筋3
と、デッキプレート2の長手方向の両端にそれぞれ配設
した端部固定材4,4と、この端部固定材4,4間へ架
設状態で連結された上下に平行する上弦筋5及び下弦筋
6と、この上弦筋5と下弦筋6の間を連結する垂直ラチ
ス筋7によって構成されている。
As shown in FIG. 1, for example, these floor structural members 1 have a deck plate 2 on which reinforcing ribs are formed along a longitudinal direction, and a reinforcing rib perpendicular to the upper surface of the deck plate 2. Support bar 3 arranged along the lateral direction
And end fixing members 4, 4 respectively arranged at both ends in the longitudinal direction of the deck plate 2, and upper and lower parallel chords 5 and lower chords connected vertically between the end fixing members 4, 4. 6 and a vertical lattice 7 connecting between the upper chord 5 and the lower chord 6.

【0004】上弦筋5及び下弦筋6と支持筋3とで形成
された鉄筋ラチス梁は、上弦筋5と下弦筋6の間を蛇行
させた垂直ラチス筋7の上下の折り曲げ部分が、当該上
弦筋5と下弦筋6にスポット溶接によってそれぞれ固着
され、これにより下向き荷重に対する剛性が高められて
いる。
[0004] The reinforcing lattice lattice beam formed by the upper and lower chord bars 5 and 6 and the support bar 3 is formed by bending the upper and lower bent portions of the vertical lattice bar 7 meandering between the upper and lower chord bars 5. The bars 5 and the lower chords 6 are fixed to each other by spot welding, thereby increasing rigidity against a downward load.

【0005】支持筋3は連続する山形状に形成され、平
坦な底部側をデッキプレート2の上面に溶接などによっ
て固着すると共に、山形の頂部が鉄筋ラチス梁を跨ぐよ
うにして当該山形の頂部を上弦筋4に対してスポット溶
接で固着し、これにより、支持筋3は鉄筋ラチス梁を吊
り下げ状態で支持し、端部固定材4,4と協働して鉄筋
ラチス梁の倒れ防止部材として機能し、且つデッキプレ
ート2の上面から下弦筋6迄の高さ方向の間隔を一定に
保持するためのスペーサーとしても機能するものであ
る。
The support bar 3 is formed in a continuous mountain shape, and the flat bottom side is fixed to the upper surface of the deck plate 2 by welding or the like, and the top of the mountain is straddled by a reinforcing steel lattice beam, and the top of the mountain is connected to the top. It is fixed to the upper chord bar 4 by spot welding, whereby the support bar 3 supports the rebar lattice beam in a suspended state, and cooperates with the end fixing members 4 to prevent the rebar lattice beam from falling. It also functions as a spacer for maintaining a constant distance in the height direction from the upper surface of the deck plate 2 to the lower chord 6.

【0006】上記床構造材1は、デッキプレート2に鉄
筋ラチス梁を含む床鉄筋を取り付けた状態で工場生産
し、これを建築現場に搬入して設置し、必要に応じて亀
裂防止用のメタルラスなどを取り付けた後に、当該床鉄
筋付のデッキプレートを捨て型枠としてコンクリートを
打設して建物の床スラブを構成する。
[0006] The floor structural material 1 is produced in a factory with a floor reinforcing bar including a reinforcing lattice beam attached to a deck plate 2, carried into a construction site and installed, and if necessary, a metal lath for crack prevention is provided. After attaching the floor slab, concrete is cast using the deck plate with the floor reinforcement as a discarding formwork to form a floor slab of the building.

【0007】尚、この種の床構造材では支持筋3が延在
するデッキプレート2の短手方向を定尺にして、垂直ラ
チス筋7が延在するデッキプレート2の長手方向は建物
の床構造に適合する任意の長さに設定すると共に、床鉄
筋の高さは床スラブの厚さに適合する任意の長さに設定
し、同様の構成による複数枚の床構造材1をデッキプレ
ート2の短手方向に隣接させて並設した状態で使用す
る。
In this type of floor structural material, the length of the deck plate 2 on which the support bars 3 extend is set to a fixed length, and the longitudinal direction of the deck plate 2 on which the vertical lattice bars 7 extend is the floor of the building. An arbitrary length suitable for the structure is set, and the height of the floor rebar is set to an arbitrary length compatible with the thickness of the floor slab. Used side by side in the short direction.

【0008】[0008]

【発明が解決しようとする課題】上記したように、床鉄
筋として垂直ラチス筋7を用いて鉄筋ラチス梁にした従
来の床構造材1の場合には、次のような改善すべき点が
あった。
As described above, in the case of the conventional floor structural material 1 in which the vertical lattice bars 7 are used as the floor reinforcing bars and the reinforcing lattice beams are used, there are the following points to be improved. Was.

【0009】すなわち、断面円形の上弦筋5及び下弦筋
6の円弧状面と、断面円形の垂直ラチス筋7の折り曲げ
部の円弧状面とを、点接触状態に当接した状態で溶着し
ているので、溶接する際に両者の位置決めを正確にし且
つ位置ずれを生じないように固定保持すると共に、垂直
ラチス筋の製作精度を確保しておく必要があり、通常、
上弦筋5及び下弦筋6と垂直ラチス筋7との溶接並びに
垂直ラチス筋7の製造を専用設備で行っている。
That is, the arcuate surfaces of the upper and lower chord bars 5 and 6 having a circular cross section and the arcuate surfaces of the bent portions of the vertical lattice bars 7 having a circular cross section are welded in a state of abutting on a point contact state. Therefore, when welding, it is necessary to accurately position the two and fix and hold them so as not to cause displacement, and it is necessary to ensure the manufacturing accuracy of the vertical lattice streak.
Welding of the upper and lower chord bars 5 and 6 with the vertical lattice bars 7 and the production of the vertical lattice bars 7 are performed using dedicated equipment.

【0010】ところが、同じ構成の床構造材を製造する
場合でも、スラブ厚15cm前後の一般的なデッキと、
スラブ厚が23cmを越える大型デッキとでは、寸法の
開きが大き過ぎるために上記の専用設備を共用すること
ができない。したがって、大型デッキ用の専用設備が別
途必要となるが、この大型デッキは、地下室や橋梁等で
使われる特殊なものであり、需要が一定していないため
に専用設備の稼働率が低く、しかもデッキ各部の寸法が
大きく、また大径な鉄筋を使用する関係上、設備の導入
費用も嵩むことから、極めてコスト高となる。
However, even when manufacturing floor structural materials having the same configuration, a general deck having a slab thickness of about 15 cm,
With a large deck with a slab thickness of more than 23 cm, the above-mentioned dedicated equipment cannot be shared because the size difference is too large. Therefore, special equipment for large decks is required separately, but these large decks are special ones used in basements and bridges, etc. Since the size of each part of the deck is large and the use of a large-diameter reinforcing bar increases the cost of introducing the equipment, the cost is extremely high.

【0011】また、大型デッキではスラブ厚の変動幅が
大きく、スラブ厚に応じて垂直ラチス筋7に使用する鉄
筋径やラチスのピッチ等を変えるのがコスト上有利だ
が、上記の通りラチス筋の製造を専用設備で行う場合、
寸法の増減に容易に対応し得ない難点があるため、スラ
ブ厚に応じた最適な設計を行うことが困難である。
Further, in a large deck, the variation width of the slab thickness is large, and it is advantageous in terms of cost to change the diameter of the reinforcing bar used for the vertical lattice bars 7 and the pitch of the lattice in accordance with the slab thickness. When manufacturing is performed with dedicated equipment,
Since there is a difficulty in easily coping with the increase or decrease in the dimensions, it is difficult to perform an optimal design according to the slab thickness.

【0012】そこで本発明では、これら従来技術の課題
を解決するために、床鉄筋の製造に要する専用設備を簡
略化して大型デッキを低コストに製造可能な床構造材の
提供を目的とする。
SUMMARY OF THE INVENTION In order to solve the problems of the prior art, an object of the present invention is to provide a floor structural material capable of manufacturing a large deck at low cost by simplifying a dedicated facility required for manufacturing a floor reinforcing bar.

【0013】[0013]

【課題を解決するための手段】この目的を達成するため
に本発明の床構造材は、デッキプレートと、このデッキ
プレートの上面に取り付けられた床鉄筋とで構成され、
該床鉄筋は、デッキプレートの長手方向の両端にそれぞ
れ並設した端部固定材と、該端部固定材間に架設された
上下で平行する上弦筋及び下弦筋と、該上弦筋及び下弦
筋を連結状態で支持する連結支持筋とで構成され、該連
結支持筋は、所定長さの1本の鉄筋材を折り曲げ形成し
てなるものであり、リング状に曲成された上弦筋及び下
弦筋の各保持部と、該両保持部間を結ぶ直線状の斜材部
と、上記下弦筋保持部から垂下した脚部とを有し、全体
として上記斜材部がラチスを形成するように、上記上弦
筋及び下弦筋の軸線方向に複数設けた。
In order to achieve this object, a floor structural material of the present invention comprises a deck plate and a floor reinforcing bar mounted on an upper surface of the deck plate.
The floor reinforcing bar includes end fixing members juxtaposed at both ends in the longitudinal direction of the deck plate, upper and lower parallel chords extending between the end fixing members, and upper and lower chords. And a connecting support bar for supporting the connecting bar in a connected state, wherein the connecting supporting bar is formed by bending a single reinforcing bar having a predetermined length, and the upper and lower chords bent in a ring shape. Each holding portion of the streaks, a straight diagonal portion connecting the two holding portions, and a leg portion hanging down from the lower chord holding portion, so that the diagonal portion forms a lattice as a whole. The plurality of upper and lower chords were provided in the axial direction.

【0014】上記構成による床構造材は、上記従来構成
による床構造材1におけるラチス筋7及び支持筋3に代
わって連結支持筋を設けたものであり、この連結支持筋
は、従来のラチス筋7が有する上弦筋及び下弦筋間を連
結して剛性を高める機能と、従来の支持筋3が有する上
弦筋及び下弦筋をデッキプレート上の所定高さ位置に保
持するスペーサー機能とを併有している。この連結支持
筋では、デッキプレートとの接合箇所のみを溶接すれば
良く、従来に比較して、溶接箇所が大幅に削減される。
そして、この連結支持筋とデッキプレートとの溶接は、
スポット溶接で良く、品質を保持するために専用設備と
しても、従来必要であった溶接箇所、すなわち上弦筋及
び下弦筋とラチス筋との間の溶接に要するような従来の
専用設備に比較して構造が簡単で安価で済む。
The floor structural member having the above-described configuration is provided with a connecting support bar in place of the lattice 7 and the supporting bar 3 in the floor structural member 1 having the conventional configuration, and the connecting supporting bar is a conventional lattice bar. 7 has a function of increasing the rigidity by connecting between the upper and lower chords, and a spacer function of holding the upper and lower chords of the conventional support 3 at a predetermined height on the deck plate. ing. In this connection support bar, only the joints with the deck plate need be welded, and the number of welds is greatly reduced as compared with the related art.
And the welding of this connection support bar and deck plate,
Spot welding is sufficient, and even as a special equipment for maintaining the quality, compared with the conventional special equipment required for welding that was conventionally required, that is, the welding required between the upper and lower chords and the lattice streak. The structure is simple and inexpensive.

【0015】その上、上記連結支持筋は、リング状の保
持部で上弦筋及び下弦筋を保持する構成としているた
め、上弦筋及び下弦筋に対する溶接の都合で従来のラチ
ス筋に要求されるような高さ方向及びデッキプレートの
短手方向における高い寸法精度は必要なく、また、隣り
合うもの相互の間隔を適宜に調整可能であるため、デッ
キプレートの長手方向の寸法精度もあまり要求されな
い。このため、汎用のばね製造機あるいはマルチ曲げ加
工機等で簡易に製造可能であり、従来のラチス筋7製造
に要するような専用の曲げ加工設備が不要である。この
ため、スラブ厚に応じた鉄筋径や各部の寸法、例えばラ
チスを構成する斜材の寸法等の変更に対して容易に対応
可能となる。
In addition, since the above-mentioned connecting supporting bars are configured to hold the upper and lower chords by the ring-shaped holding portion, it is necessary for the conventional lattice bars to be welded to the upper and lower chords. There is no need for high dimensional accuracy in the height direction and in the short direction of the deck plate, and since the distance between adjacent members can be adjusted as appropriate, little dimensional accuracy in the longitudinal direction of the deck plate is required. For this reason, it can be easily manufactured with a general-purpose spring manufacturing machine or a multi-bending machine or the like, and does not require special bending equipment required for manufacturing the conventional lattice streak 7. For this reason, it is possible to easily cope with a change in the rebar diameter or the size of each part according to the slab thickness, for example, the size of the diagonal member forming the lattice.

【0016】上記床構造材においては、連結支持筋が、
上弦筋及び下弦筋の各保持部、斜材部並びに脚部をそれ
ぞれ複数有するものとすると、取付工数や強度の面で都
合がよいが、反面、あまり数が増えると製造が面倒にな
ることから、最も望ましい構成は、上記連結支持筋が、
鉄筋材の軸線方向中間部に上記脚部が形成され、該脚部
を挟んでその両側に上記下弦筋保持部が一対形成され、
該一対の下弦筋保持部からそれぞれ上方が広がったV字
形状に上記斜材部が一対延出され、該一対の斜材部の上
端の鉄筋材の端末にそれぞれ上記上弦筋保持部が一対形
成されたものである。
[0016] In the floor structural material, the connecting support bar is
Having multiple holding parts, diagonal parts, and legs for each of the upper and lower chord muscles is convenient in terms of mounting man-hours and strength, but on the other hand, if the number increases too much, manufacturing becomes troublesome. The most desirable configuration is that the connecting support muscle is
The leg portion is formed at an intermediate portion in the axial direction of the reinforcing bar material, and a pair of the lower chord muscle holding portions is formed on both sides of the leg portion,
A pair of the above-mentioned oblique members are extended in a V-shape, each of which extends upward from the pair of lower-chord bars, and a pair of upper-chord bars are formed at the ends of the reinforcing bars at the upper ends of the pair of slant members. It was done.

【0017】さらに、上記床構造材においては、1本の
上記上弦筋に対して2本の上記下弦筋を有し、上記連結
支持筋が、上記上弦筋を挟んでその両側に概ね対向した
状態で対をなして設けられた態様がある。これは、連結
支持筋で上弦筋をその両側から斜めに支持させること
で、連結支持筋に従来の支持筋3の有する上弦筋の横座
屈を抑制する控え部材としての機能を付与したものであ
る。この場合、ラチス部分が2重になるため下向き荷重
に対する剛性も高めることができる。
Further, in the floor structural material, two lower chords are provided for one upper chord, and the connecting supporting muscles are generally opposed to both sides of the upper chord. There is a mode provided in pairs. This is because the connecting support muscle supports the upper chord obliquely from both sides thereof, thereby giving the connecting support muscle a function as a restraining member that suppresses lateral buckling of the upper chord muscle of the conventional support muscle 3. . In this case, since the lattice portion is doubled, the rigidity against a downward load can be increased.

【0018】また、上記床構造材においては、1本の上
記上弦筋に対して1本の上記下弦筋を有し、複数の上記
連結支持筋が、上記上弦筋及び下弦筋の軸線方向にずら
しながら上弦筋を挟んで相反する側に交互に設けられた
態様がある。これは、連結支持筋の配設個数を減らして
鉄筋量の削減によりコストの低減を図ったものである。
この場合、デッキプレートの短手方向に隣り合う各列の
上弦筋を相互に連結する連結保持材を設けることで、上
弦筋の横座屈を抑制する機能を高めることができる。な
お、大型デッキでは、一般に鉄筋に大径のものが使用さ
れる関係上、高い剛性が得られるため、特に長手方向の
長さがあるデッキプレートでない限り、上記の連結保持
材を使用する必要はない。
In the floor structural member, one lower chord is provided for one upper chord, and a plurality of the connecting support bars are shifted in the axial direction of the upper and lower chords. However, there is a mode in which they are alternately provided on opposite sides of the upper chord. This is intended to reduce costs by reducing the number of reinforcing bars and reducing the amount of reinforcing bars.
In this case, the function of suppressing lateral buckling of the upper chord muscles can be enhanced by providing a connecting holding material for interconnecting the upper chord muscles of each row adjacent in the transverse direction of the deck plate. In addition, in the case of a large deck, since high-strength steel is generally used because of the use of a large-diameter reinforcing bar, it is not necessary to use the above-described connection holding material unless the deck plate has a particularly long length in the longitudinal direction. Absent.

【0019】[0019]

【発明の実施の形態】以下に、本発明による床構造材を
図2乃至図9で図示する実施の形態に基づいて詳細に説
明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A floor structural member according to the present invention will be described below in detail with reference to the embodiments shown in FIGS.

【0020】図2及び図3で示す第1の床構造材10
は、従来構造と同様に短手方向となる横幅が定尺で、長
手方向となる長さが建物の構造に適合させた方形状の鉄
板で、長手方向に沿って補強リブ加工が施されたデッキ
プレート11を用い、このデッキプレート11の上面に
床鉄筋が取り付けられている。
The first floor structural member 10 shown in FIG. 2 and FIG.
Is a rectangular iron plate whose width in the short direction is the same as the conventional structure and whose length in the long direction is adapted to the structure of the building, and reinforcement rib processing is applied along the long direction The deck plate 11 is used, and a floor reinforcing bar is attached to the upper surface of the deck plate 11.

【0021】床鉄筋は、デッキプレート11の長手方向
の両端にそれぞれ配設し、基部を当該デッキプレート1
1に固着した端部固定材12,12と、この端部固定材
12に両端部をそれぞれ固着し,当該端部固定材12,
12間に架設された上下に平行する上弦筋13及び下弦
筋14と、これら上弦筋13及び下弦筋14を連結状態
で支持する連結支持筋15とで構成されている。
The floor reinforcing bars are respectively provided at both ends in the longitudinal direction of the deck plate 11, and the base thereof is connected to the deck plate 1.
1 and both end portions are fixed to the end fixing member 12, and the end fixing members 12, 12 are fixed to the end fixing members 12, 12, respectively.
The upper chord 13 and the lower chord 14 are provided between the upper and lower twelve lines 12 and the connecting support muscle 15 for supporting the upper chord 13 and the lower chord 14 in a connected state.

【0022】端部固定材12は、垂直固定片12aの高
さ方向中間部に、水平固定片12bを交差した状態で接
合させた十文字状をなし、垂直固定片12aの上端側に
対して両端部をそれぞれ固着した状態で上弦筋13が架
設されると共に、水平固定片12bの両端側に対して両
端部をそれぞれ固着した水平状態で平行する二本の下弦
筋14が架設されている。上弦筋13及び下弦筋14と
端部固定材12、並びに端部固定材12とデッキプレー
ト11は溶接にて接合される。
The end fixing member 12 is formed in a cross shape in which a horizontal fixing piece 12b is joined to the middle part in the height direction of the vertical fixing piece 12a in a crossed state, and both ends are formed at both ends with respect to the upper end side of the vertical fixing piece 12a. The upper chordal bar 13 is erected with the parts fixed to each other, and two lower chordal bars 14 are erected in the horizontal state with both ends fixed to both ends of the horizontal fixing piece 12b. The upper chordal muscle 13 and the lower chordal muscle 14 and the end fixing member 12, and the end fixing member 12 and the deck plate 11 are joined by welding.

【0023】連結支持筋15は、リング状に曲成された
上弦筋及び下弦筋の各保持部17,18と、該両保持部
17,18間を結ぶ直線状の斜材部19と、下弦筋保持
部18から垂下した脚部20とを有している。この連結
支持筋15は、所定長さの1本の鉄筋材を折り曲げ形成
してなるものであり、鉄筋材の軸線方向中間部に脚部2
0が形成され、この脚部20を挟んでその両側に下弦筋
保持部18が一対形成され、これら一対の下弦筋保持部
18から上方が広がったV字形状に一対の斜材部19が
延出され、これら一対の斜材部19の上端の鉄筋材の端
末に一対の上弦筋保持部17が形成されている。
The connecting support bar 15 includes upper and lower chord bar holders 17 and 18 which are bent in a ring shape, a linear diagonal member 19 connecting the both holders 17 and 18, and a lower chord. And a leg portion 20 hanging down from the muscle holding portion 18. The connecting support bar 15 is formed by bending a single reinforcing bar having a predetermined length, and has a leg 2 at an intermediate portion in the axial direction of the reinforcing bar.
A pair of lower chord muscle holding portions 18 are formed on both sides of the leg portion 20, and a pair of diagonal portions 19 extend from the pair of lower chord muscle holding portions 18 into a V-shape extending upward. A pair of upper chordal bar holding portions 17 are formed at the ends of the reinforcing bars at the upper ends of the pair of diagonal members 19.

【0024】この連結支持筋15は、上弦筋13及び下
弦筋14の軸線方向に所要の数だけ列設されている。こ
れらの連結支持筋15は、全て同一形状のものであり、
上弦筋13を挟んで概ね対向する位置に対をなして配置
され、これら対をなす連結支持筋15は、各々の上弦筋
保持部17が相互に干渉するのを避けるため、上弦筋1
3の軸線方向にずらして設けられている。
The connecting support bars 15 are arranged in a required number in the axial direction of the upper and lower chord bars 13 and 14. These connecting support bars 15 are all of the same shape,
The pair of connecting supporting muscles 15 are arranged at positions substantially opposite to each other with the upper chordal muscle 13 interposed therebetween. In order to prevent the respective upper chordal muscle holding portions 17 from interfering with each other, the upper chordal muscle 1
3 are shifted in the axial direction.

【0025】連結支持筋15の斜材部19は、連結支持
筋15が上弦筋13及び下弦筋14の軸線方向に複数列
設されることで、全体としてラチスを形成し、従来の垂
直ラチス筋7と同様の機能、すなわち上弦筋13及び下
弦筋14を相互に連結して剛性を高める機能を果たして
いる。この実施形態では、斜材部19によるラチスが2
重になるため上載荷重に対する剛性も高められている。
また、この斜材部19は、上弦筋13がデッキプレート
11の短手方向に撓む横座屈を抑制する控え部材として
も機能している。脚部20は、上弦筋13及び下弦筋1
4をデッキプレート11上の所定高さに保持するスペー
サとして機能している。この脚部20は、デッキプレー
ト11の上面に対してスポット溶接で接合される。
The diagonal portions 19 of the connecting support bars 15 form a lattice as a whole by connecting the connecting support bars 15 in a plurality of rows in the axial direction of the upper chordal bar 13 and the lower chordal bar 14, thereby forming a conventional vertical lattice bar. 7 has a function of increasing the rigidity by connecting the upper chordal muscle 13 and the lower chordal muscle 14 to each other. In this embodiment, the lattice by the diagonal member 19 is 2
Because of the overlap, the rigidity against the overload is also increased.
The diagonal portion 19 also functions as a restraining member that suppresses the lateral buckling of the upper chord 13 in the transverse direction of the deck plate 11. The leg 20 is composed of the upper chord 13 and the lower chord 1
4 functions as a spacer for holding the deck 4 at a predetermined height on the deck plate 11. The legs 20 are joined to the upper surface of the deck plate 11 by spot welding.

【0026】上弦筋13及び下弦筋14の各保持部1
7,18は、上弦筋13及び下弦筋14の略全周に巻き
付けられた態様で装着されている。この保持部17,1
8は、実際には、ばね製造機あるいはマルチ曲げ加工機
で予め所要の径のリング状に曲げ加工した上で、内部に
上弦筋13及び下弦筋14を挿入するようにしてこれに
装着される。この保持部17,18と上弦筋13及び下
弦筋14とのはめ合いは、しまりばめとすることで十分
な結合強度が得られ、両者を特に溶接する必要はない。
なお、保持部17,18をかしめて上弦筋13及び下弦
筋14に結合する態様も可能である。また、溶接するに
しても、従来のラチス筋のような面倒な位置決め及び固
定操作が不要であるため、比較的簡単に行うことができ
る。
Each of the holding portions 1 of the upper chordal muscle 13 and the lower chordal muscle 14
Reference numerals 7 and 18 are attached so as to be wound around substantially the entire circumference of the upper chordal muscle 13 and the lower chordal muscle 14. This holding part 17, 1
8 is actually mounted on a spring making machine or a multi-bending machine in such a manner that it is bent into a ring shape having a required diameter in advance, and the upper chordal muscle 13 and the lower chordal muscle 14 are inserted therein. . When the holding portions 17, 18 and the upper chordal bar 13 and the lower chordal bar 14 are fitted tightly, a sufficient joint strength can be obtained, and it is not necessary to particularly weld them.
Note that a mode in which the holding portions 17 and 18 are crimped and connected to the upper chordal muscle 13 and the lower chordal muscle 14 is also possible. Further, even when welding is performed, troublesome positioning and fixing operations such as conventional lattice streaks are not required, so that welding can be performed relatively easily.

【0027】以上のように連結支持筋15を構成する
と、連結支持筋15が単一種類で済むため、床鉄筋の組
立作業が容易になると共に、複数種類の部品を在庫とし
て抱える不便が解消される等、生産コストの低減や作業
能率の向上を図る上で効果的である。
When the connecting support bars 15 are configured as described above, only one type of connecting support bars 15 is required, so that the work of assembling the floor reinforcing bar is facilitated and the inconvenience of holding a plurality of types of parts in stock is eliminated. This is effective in reducing production costs and improving work efficiency.

【0028】図4及び図5は第2の床構造材の実施形態
を示すものであり、この床構造材30では、形状が異な
る第1,第2の2種類の連結支持筋31,32が使用さ
れている。この他のデッキプレート11、端部固定材1
2、上弦筋13並びに下弦筋14については、前記の実
施形態と同一であり、同一の符号を付してその詳細な説
明は省略する。
FIGS. 4 and 5 show an embodiment of the second floor structural member. In this floor structural member 30, first and second two types of connecting support bars 31, 32 having different shapes are provided. in use. Other deck plate 11, end fixing material 1
2. The upper chordal muscle 13 and the lower chordal muscle 14 are the same as those in the above-described embodiment, and are denoted by the same reference numerals, and detailed description thereof will be omitted.

【0029】第1連結支持筋31は、前記の連結支持筋
15と同様に、一対の上弦筋保持部33、一対の下弦筋
保持部34、一対の斜材部35、並びに脚部36からな
り、第2連結支持筋32も同様に、一対の上弦筋保持部
37、一対の下弦筋保持部38、一対の斜材部39、並
びに脚部40からなっている。両連結支持筋31,32
は、斜材部35,39の寸法並びに角度の点で異なって
いる。すなわち、第1連結支持筋31の斜材部35は第
2連結支持筋32の斜材部39よりも長寸であり、一対
の斜材部35相互のなす角度は一対の斜材部39相互の
なす角度よりも大きくなっており、第1連結支持筋31
の一対の上弦筋保持部33の間に、第2連結支持筋32
の一対の上弦筋保持部37が配置されている。
The first connecting support bar 31, like the connecting support bar 15, comprises a pair of upper chord holders 33, a pair of lower chord holders 34, a pair of diagonal members 35, and legs 36. Similarly, the second connecting support bar 32 also includes a pair of upper chord bar holders 37, a pair of lower bar holders 38, a pair of diagonal members 39, and legs 40. Both connecting support bars 31, 32
Are different in the dimensions and angles of the oblique members 35 and 39. That is, the diagonal portion 35 of the first connection support bar 31 is longer than the diagonal portion 39 of the second connection support bar 32, and the angle between the pair of diagonal portions 35 is different from that of the pair of diagonal portions 39. The first connecting support bar 31
Between the pair of upper chordal muscle holding portions 33,
Are disposed.

【0030】このようにすると、第1,第2の両連結支
持筋31,32が上弦筋13を挟んで正対し、これらの
中心に位置する脚部36,40がデッキプレート11の
短手方向に一直線上に並んで配置されるため、脚部3
6,40とデッキプレート11とのスポット溶接が容易
になる。
In this manner, the first and second connecting support bars 31 and 32 face each other with the upper chord bar 13 interposed therebetween, and the legs 36 and 40 located at the centers thereof are in the short direction of the deck plate 11. The legs 3
Spot welding between 6, 40 and the deck plate 11 becomes easy.

【0031】図6及び図7は第3の床構造材の実施形態
を示すものであり、この床構造材40では、上記端部固
定材12の垂直固定片12aと同様の形状の端部固定材
22に支持された態様で1本の上弦筋43に対して1本
の下弦筋44が設けられており、複数の連結支持筋45
が、上弦筋43及び下弦筋44の軸線方向にずらしなが
らこれらを挟んで相反する側に交互に設けられている。
端部固定材22と上弦筋43及び下弦筋44、並びに端
部固定材22とデッキプレート11とは溶接で相互に固
定されている。
FIGS. 6 and 7 show an embodiment of the third floor structural member. In this floor structural member 40, an end fixing member having the same shape as the vertical fixing piece 12a of the end fixing member 12 is used. One lower chord 44 is provided for one upper chord 43 in a manner supported by the material 22, and a plurality of connecting support 45
Are alternately provided on opposite sides of the upper and lower chords 43 and 44 while displacing them in the axial direction.
The end fixing member 22 and the upper chordal bar 43 and the lower chordal bar 44, and the end fixing member 22 and the deck plate 11 are fixed to each other by welding.

【0032】連結支持筋45は、上記の各連結支持筋と
同様、上弦筋43及び下弦筋44の両保持部47,48
と、両保持部47,48を相互に連結する斜材部49
と、下弦筋保持部48から垂下した脚部50とからなっ
ている。デッキプレート11の上面とこれに接する脚部
50の下面とはスポット溶接で相互に接合されている。
The connecting support bars 45 are, similarly to the above-described connecting support bars, provided with both holding portions 47, 48 of the upper chordal bar 43 and the lower chordal bar 44.
And a diagonal member 49 connecting the holding parts 47 and 48 to each other.
And a leg 50 hanging down from the lower chordal muscle holding portion 48. The upper surface of the deck plate 11 and the lower surface of the leg 50 in contact therewith are joined to each other by spot welding.

【0033】この実施形態は、鉄筋量の削減によるコス
トの低減を図ったものであり、上記第1,第2の実施形
態に比較して連結支持筋並びに下弦筋の配設個数が半分
に削減されている。その反面、上弦筋43の横座屈を抑
制する機能が低下しており、この横方向の剛性を高める
ために脚部50を下弦筋保持部48から斜めに垂下させ
ている。
In this embodiment, the cost is reduced by reducing the amount of reinforcing bars. Compared with the first and second embodiments, the number of connecting support bars and lower chord bars is reduced by half. Have been. On the other hand, the function of suppressing lateral buckling of the upper chordal muscle 43 is reduced, and the legs 50 are obliquely hung down from the lower chordal muscle holding portion 48 in order to increase the lateral rigidity.

【0034】さらに上弦筋43の横座屈を抑制する機能
を高めるには、図8に示すように、デッキプレート41
の短手方向に沿って並設されて隣り合う各列の上弦筋4
3を相互に連結する連結保持材52をデッキプレート1
1の長手方向の要所に装着すれば良い。連結保持材52
は上弦筋43に単に装着するか、上弦筋43の保持が可
能な程度の結束を施せば良く、特に溶接で強固に接合す
る必要はない。ここでは、並設された4本の上弦筋43
を同時に連結するように、当該上弦筋43に適合する間
隔位置毎に鉄筋を円弧状に湾曲した係止凹部53が4カ
所に設けられているが、並設された4本の上弦筋43を
2本づつに分けて連結するようにしたり、端部を両側の
下弦筋44まで延長して当該下弦筋44に連結させるよ
うにしたりしても良い。この他、上弦筋43上に直状の
連結用鉄筋を架設して溶接で接合する態様も可能であ
る。
To further enhance the function of suppressing the lateral buckling of the upper chordal muscle 43, as shown in FIG.
Upper chordal bar 4 adjacent to each other in a row along the short direction of
3 is connected to the deck plate 1
1 may be attached to a key point in the longitudinal direction. Connection holding material 52
May be simply attached to the upper chordal muscle 43 or tied to such an extent that the upper chordal muscle 43 can be held, and it is not particularly necessary to join them firmly by welding. Here, the four upper chordal muscles 43
Are simultaneously provided at each of the intervals corresponding to the upper chordal bar 43, the locking recesses 53 in which the rebars are curved in an arc shape are provided at four places. It may be divided into two pieces and connected, or an end may be extended to both lower chords 44 on both sides to be connected to the lower chords 44. In addition, a mode in which a straight connecting reinforcing bar is provided on the upper chordal bar 43 and joined by welding is also possible.

【0035】なお、上記の各実施形態においては、鉄筋
の軸線方向中心部に脚部を設けて一対の斜材がV字形状
をなすように連結支持筋を構成したが、本発明における
連結支持筋はこのような形態に限定されるものではな
く、一対の斜材が逆V字形状をなすように構成したり、
あるいは鉄筋の端末に脚部が形成されるように構成する
態様も可能である。
In each of the above embodiments, the connecting support bar is formed such that a pair of diagonal members form a V-shape by providing a leg at the center of the reinforcing bar in the axial direction. The streaks are not limited to such a form, and a pair of diagonal members may be configured to form an inverted V shape,
Alternatively, a mode in which the leg is formed at the terminal of the reinforcing bar is also possible.

【0036】例えば、図9に示す連結支持筋61におい
ては、鉄筋の軸線方向中心部に上弦筋保持部62が形成
され、この上弦筋保持部62から一対の斜材部63が下
方が広がった逆V字形状に延出され、この斜材部63の
下端に下弦筋保持部64が形成され、この下弦筋保持部
64から垂下した鉄筋の端末に脚部65が形成されてい
る。
For example, in the connecting support bar 61 shown in FIG. 9, an upper chord holding portion 62 is formed at the center of the reinforcing bar in the axial direction, and a pair of diagonal members 63 extend downward from the upper chord holding portion 62. The lower chordal bar holding portion 64 is formed at the lower end of the diagonal member 63, and the leg 65 is formed at the end of the reinforcing bar hanging down from the lower chordal bar holding portion 64.

【0037】[0037]

【発明の効果】以上の説明でも明らかなように、本発明
による床構造材では、溶接箇所が大幅に削減され、残っ
た溶接箇所も比較的簡単に行うことができる。また、連
結支持筋の製造には、高い製作精度が要求されず、汎用
の曲げ加工設備で済む。このため、専用設備を簡略化し
て設備費を削減すると共に、コスト面で有利なスラブ厚
に応じた最適な設計が可能となり、大型デッキの製造コ
ストを削減する上に多大な効果が得られる。
As is clear from the above description, in the floor structural material according to the present invention, the number of welding points is greatly reduced, and the remaining welding points can be relatively easily performed. In addition, high-precision manufacturing is not required for the production of the connecting support bar, and general-purpose bending equipment is sufficient. For this reason, the dedicated equipment is simplified, the equipment cost is reduced, and an optimal design according to the slab thickness, which is advantageous in terms of cost, becomes possible, and a great effect is obtained in reducing the manufacturing cost of a large deck.

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

【図1】従来技術による床構造材の実施形態を示す要部
斜視図。
FIG. 1 is a perspective view of a main part showing an embodiment of a floor structural material according to a conventional technique.

【図2】本発明による床構造材の第1の実施形態を示す
要部斜視図。
FIG. 2 is an essential part perspective view showing a first embodiment of a floor structural material according to the present invention.

【図3】図2に示した床構造材の要部平面図。FIG. 3 is a plan view of a main part of the floor structural material shown in FIG. 2;

【図4】本発明による床構造材の第2の実施形態を示す
要部斜視図。
FIG. 4 is a perspective view of an essential part showing a second embodiment of the floor structural material according to the present invention.

【図5】図4に示した床構造材の要部平面図。FIG. 5 is a plan view of a main part of the floor structural material shown in FIG. 4;

【図6】本発明による床構造材の第3の実施形態を示す
要部斜視図。
FIG. 6 is an essential part perspective view showing a third embodiment of a floor structural material according to the present invention.

【図7】図6に示した床構造材の要部平面図。FIG. 7 is a plan view of an essential part of the floor structural material shown in FIG. 6;

【図8】連結保持材を装着する態様を示す縦断面図。FIG. 8 is a vertical cross-sectional view showing a mode in which a connection holding material is mounted.

【図9】他の態様の連結支持筋が適用された床構造材の
要部斜視図。
FIG. 9 is a perspective view of a main part of a floor structural member to which a connecting support bar of another embodiment is applied.

【符号の説明】[Explanation of symbols]

1,10,30,40 床構造材 2,11,41 デッキプレート 3 支持筋 4,12,42 端部固定材 5,13,43 上弦筋 6,14,44 下弦筋 7 垂直ラチス筋 15,31,32,45,61 連結支持筋 17,33,37,47,62 上弦筋保持部 18,34,38,48,64 下弦筋保持部 19,35,39,49,63 斜材部 20,36,40,50,65 脚部 52 連結保持材 53 係止凹部 1,10,30,40 Floor structure material 2,11,41 Deck plate 3 Support bar 4,12,42 End fixing material 5,13,43 Upper chord 6,14,44 Lower chord 7 Vertical lattice 15,15 , 32, 45, 61 Connecting support bars 17, 33, 37, 47, 62 Upper chord holders 18, 34, 38, 48, 64 Lower chord holders 19, 35, 39, 49, 63 Diagonal members 20, 36 , 40, 50, 65 Leg 52 Connection holding material 53 Locking recess

Claims (4)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 デッキプレートと、該デッキプレート
の上面に取り付けられた床鉄筋とで構成され、該床鉄筋
は、デッキプレートの長手方向の両端にそれぞれ並設し
た端部固定材と、該端部固定材間に架設された上下で平
行する上弦筋及び下弦筋と、該上弦筋及び下弦筋を連結
状態で支持する連結支持筋とで構成され、該連結支持筋
は、所定長さの1本の鉄筋材を折り曲げ形成してなるも
のであり、リング状に曲成された上弦筋及び下弦筋の各
保持部と、該上弦筋及び下弦筋の両保持部間を結ぶ直線
状の斜材部と、上記下弦筋保持部から垂下した脚部とを
有し、全体として上記斜材部がラチスを形成するように
上記上弦筋及び下弦筋の軸線方向に複数設けられたこと
を特徴とする床構造材。
1. A deck plate comprising: a deck plate; and a floor reinforcing bar attached to an upper surface of the deck plate. The floor reinforcing bar includes end fixing members juxtaposed at both longitudinal ends of the deck plate; The upper and lower chord muscles, which are vertically arranged in parallel between the fixing members, and a connection support muscle that supports the upper and lower chord muscles in a connected state, the connection support muscle having a predetermined length. A straight diagonal member which is formed by bending a reinforcing steel material of a book, and which holds each of the upper chordal and lower chordal holding portions bent in a ring shape and the upper chordal and lower chordal holding portions. And a plurality of legs which are suspended from the lower chord holding portion, and a plurality of the oblique members are provided in the axial direction of the upper chord and lower chord so as to form a lattice as a whole. Floor structural materials.
【請求項2】 上記連結支持筋は、鉄筋材の軸線方向
中間部に上記脚部が形成され、該脚部を挟んでその両側
に上記下弦筋保持部が一対形成され、該一対の下弦筋保
持部からそれぞれ上方が広がったV字形状に上記斜材部
が一対延出され、該一対の斜材部の上端の鉄筋材の端末
にそれぞれ上記上弦筋保持部が一対形成されたことを特
徴とする請求項1に記載の床構造材。
2. The connecting support bar has the leg portion formed at an intermediate portion in the axial direction of the reinforcing bar material, and a pair of lower chord holding portions formed on both sides of the leg portion, the pair of lower chord bars being provided. A pair of the above-mentioned oblique members are extended in a V-shape, each of which extends upward from the holding portion, and the above-mentioned pair of upper chordal bars are formed at the ends of the reinforcing members at the upper ends of the pair of oblique members. The floor structural material according to claim 1, wherein:
【請求項3】 1本の上記上弦筋に対して2本の上記
下弦筋を有し、上記連結支持筋が、上記上弦筋を挟んで
その両側に概ね対向する態様で対をなして設けられたこ
とを特徴とする請求項1若しくは請求項2に記載の床構
造材。
3. The apparatus has two lower chords with respect to one upper chord, and the connecting support bars are provided in pairs on both sides of the upper chord so as to be substantially opposed to each other. The floor structural material according to claim 1 or 2, wherein:
【請求項4】 1本の上記上弦筋に対して1本の上記
下弦筋を有し、上記連結支持筋が、上記上弦筋及び下弦
筋の軸線方向にずらしながら上弦筋を挟んで相反する側
に交互に設けられたことを特徴とする請求項1若しくは
請求項2に記載の床構造材。
4. The apparatus according to claim 1, further comprising: one lower chord for one upper chord, wherein the connecting support bars are opposite to each other with the upper chord interposed therebetween while being shifted in the axial direction of the upper chord and the lower chord. The floor structural material according to claim 1 or 2, wherein the structural members are provided alternately.
JP13625598A 1998-05-19 1998-05-19 Floor structural materials Expired - Lifetime JP2886160B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13625598A JP2886160B1 (en) 1998-05-19 1998-05-19 Floor structural materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13625598A JP2886160B1 (en) 1998-05-19 1998-05-19 Floor structural materials

Publications (2)

Publication Number Publication Date
JP2886160B1 true JP2886160B1 (en) 1999-04-26
JPH11324203A JPH11324203A (en) 1999-11-26

Family

ID=15170917

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP2886160B1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040017560A (en) * 2002-08-22 2004-02-27 덕신철강공업 주식회사 Deck panel for reinforced concrete slab
AT503657B1 (en) * 2006-10-18 2007-12-15 Krismer Josef Reinforcement grid or floor mounting grid comprises wire paths, which are arranged next to one another and are formed by wires that are bent in a zig-zag shape, and parallel bars clamped within the loops of the paths
KR100904077B1 (en) 2007-06-29 2009-06-23 주식회사 다일 A bilateral symmetry type truss girder making crank and a method thereof
KR100882464B1 (en) 2008-12-05 2009-02-10 동아에스텍 주식회사 Deck plate with support member
KR100903211B1 (en) * 2009-02-04 2009-06-18 동아에스텍 주식회사 Deck plate with support member
KR100991017B1 (en) 2009-08-19 2010-10-29 공정두 Thedeck plate
JP7079434B2 (en) * 2020-05-11 2022-06-02 株式会社クギン Connecting metal fittings, reinforcing bar truss with connecting metal fittings and their manufacturing method, and deck plate and its manufacturing method

Also Published As

Publication number Publication date
JPH11324203A (en) 1999-11-26

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