JP2001026909A - Connection structure of floor slab using three- dimensional truss with concrete form in bridge girder - Google Patents

Connection structure of floor slab using three- dimensional truss with concrete form in bridge girder

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Publication number
JP2001026909A
JP2001026909A JP11201354A JP20135499A JP2001026909A JP 2001026909 A JP2001026909 A JP 2001026909A JP 11201354 A JP11201354 A JP 11201354A JP 20135499 A JP20135499 A JP 20135499A JP 2001026909 A JP2001026909 A JP 2001026909A
Authority
JP
Japan
Prior art keywords
concrete
dimensional
slab
plate
truss
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
Application number
JP11201354A
Other languages
Japanese (ja)
Other versions
JP3881135B2 (en
Inventor
Katsuto Kichimurei
勝人 吉牟禮
Original Assignee
Kondo Kozai Kk
近藤鋼材株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kondo Kozai Kk, 近藤鋼材株式会社 filed Critical Kondo Kozai Kk
Priority to JP20135499A priority Critical patent/JP3881135B2/en
Publication of JP2001026909A publication Critical patent/JP2001026909A/en
Application granted granted Critical
Publication of JP3881135B2 publication Critical patent/JP3881135B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide a connection structure of a floor slab using a three- dimensional truss with concrete form in a bridge girder capable of simplifying work and rationalizing construction work. SOLUTION: This connection structure of a floor slab using a three- dimensional truss is constituted in such a way that it consists of at least the three-dimensional truss 3 with concrete form in which a projection 2 such as a stud bolt erected on an upper face of a flange 11 of a steel girder 1 and a concrete form 32 to be arranged on the upper face of the flange 11 are integrally formed in a lower part of a three-dimensional welded reinforcing bar 31 and a U-shaped bar 4 which is pressed into the three-dimensional welded reinforcing bar 31 and is connected therewith and the three-dimensional welded reinforcing bars 31 are integrated by concrete to form the floor slab. Moreover, a support plate may be set on the projection 2 to arrange the three-dimensional truss 3 with the concrete form on it, and the U-shaped bar 4 may be inserted into the three-dimensional welded reinforcing bar 11 for connection.

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】本発明は道路の幅が二車線程
度の橋床を施工する際の橋桁に於けるコンクリート版付
き立体トラスを用いた床版の結合構造に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure of a floor slab using a three-dimensional truss with a concrete slab in a bridge girder when constructing a bridge floor having a road width of about two lanes.
【0002】[0002]
【従来の技術】従来の橋床の施工方法としては、橋桁の
上に橋床用の木製型枠を現場で組立て、且つ鉄筋の配筋
作業を行い、その後、コンクリート打設・養生を行って
から木製型枠の解体及び撤去作業が行われて橋床を形成
させていた。
2. Description of the Related Art As a conventional method of constructing a bridge deck, a wooden formwork for a bridge deck is assembled on a bridge girder at a site, reinforcing bars are laid, and then concrete placement and curing are performed. The wooden formwork was dismantled and removed from to form the bridge floor.
【0003】[0003]
【発明が解決しようとする課題】しかしながら前記橋床
を形成する場合は型枠に木を使用するため、不要になっ
た木製型枠の材料が多数発生し、その廃棄処分が必要と
なり、環境問題を生じていた。また現場で木製型枠の組
立作業や鉄筋配筋作業が行われるため、施工期間が天候
に左右され、且つ多くの作業員が必要であった。更にコ
ンクリート打設・養生後、木製型枠の解体及び撤去作業
を行うので、工期短縮やコスト削減及び省力化などが困
難である等の問題点があった。
However, when the bridge deck is formed, wood is used for the formwork, so that a large number of unnecessary wooden form materials are generated and need to be disposed of. Was occurring. In addition, since the assembling work of the wooden formwork and the reinforcing bar reinforcing work are performed on site, the construction period is affected by the weather, and many workers are required. Furthermore, since the wooden formwork is dismantled and removed after the concrete is placed and cured, it is difficult to shorten the construction period, reduce costs and save labor.
【0004】本発明は簡単な作業で且つ施工の合理化を
図るために、本発明者が特願平11−169099号,
特願平11−184643号で提案した「橋床などの土
木用のコンクリート捨て型枠付き立体トラス」を使用し
た場合、それが簡単で且つ強固に形成出来る床版の結合
構造を提供することを目的とする。
[0004] The present invention is a simple operation, and in order to streamline the construction, the present inventor disclosed in Japanese Patent Application No. 11-169099,
In the case of using a "three-dimensional truss with concrete dumping formwork for civil engineering such as a bridge floor" proposed in Japanese Patent Application No. 11-184463, it is intended to provide a joint structure of a floor slab which can be easily and firmly formed. Aim.
【0005】[0005]
【課題を解決するための手段】上記問題点を解決するた
めに本発明は成されたものであり、つまり、鋼製桁のフ
ランジ上面に立設し固着させた突起物と、フランジ上面
に配置すると共に突起物付近まで配置させて敷設したコ
ンクリート版を立体溶接鉄筋の下部に一体に形成させた
コンクリート版付き立体トラスと、突起物を挟んで対向
するコンクリート版付き立体トラス同士の立体溶接鉄筋
内へ押し込んで接続させると共に突起物に接触しないよ
うに配置した接続用のU字筋とから構成させ、且つコン
クリートで立体溶接鉄筋間を一体化して床版が形成され
る構造とする。又、鋼製桁のフランジ上面に立設させた
ネジ部を有する突起物と、突起物にセットした支持板
と、その上に配置させた立体溶接鉄筋の下部にコンクリ
ート版を一体に形成したコンクリート版付き立体トラス
と、突起物を挟んで対向する立体溶接鉄筋同士の内部へ
押し込んで接続させると共に突起物に接触しないように
配置させた接続用のU字筋とから少なくとも構成させ、
且つコンクリートで立体溶接鉄筋間を一体化してハンチ
付きの床版が形成された構造としても良い。
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. That is, a protrusion which is erected and fixed on the upper surface of a flange of a steel girder, and disposed on the upper surface of the flange. Inside a three-dimensional truss with a concrete slab, in which a concrete slab laid down to the vicinity of the protrusion is integrally formed at the bottom of the three-dimensional welded reinforcing bar, and a three-dimensional truss with a concrete slab with the concrete slab facing the interposition of the protrusion And a connection U-shaped reinforcing bar arranged so as not to contact the protrusions, and the three-dimensional welded reinforcing bars are integrated with concrete to form a floor slab. Also, a projection having a threaded portion set up on the upper surface of the flange of the steel girder, a support plate set on the projection, and a concrete plate integrally formed at the lower part of the three-dimensional welded reinforcing bar disposed thereon. A plate-shaped space truss and at least a connection U-shaped reinforcing bar arranged so as to be pressed into the three-dimensional welded reinforcing bars facing each other across the protrusion and connected so as not to contact the protrusion,
Further, a structure in which the floor slab with the haunch is formed by integrating the three-dimensional welded reinforcing bars with concrete may be used.
【0006】[0006]
【発明の実施の形態】図1は本発明の実施形態を示す図
であり、この図面に基づいて説明する。(1)は橋梁の鋼
製桁であり、該鋼製桁(1)としてはH形鋼を用いる。
尚、前記鋼製桁(1)の上下にフランジ(11)が来るよ
うにセットされている。(2)は鋼製桁(1)のフランジ
(11)上面に所定ピッチで多数取付けられた突起物であ
り、該突起物(2)としては、頭付き軸やスタッドボル
トなどを用いると良い。前記所定ピッチとしては後述す
るU字筋(4)の中間位置とする(図2参照)。また突
起物(2)は、鋼製桁(1)を準備する際に、予め工場に
於いて鋼製桁(1)のフランジ(11)上面に溶接して立
設させておく。(3)は立体溶接鉄筋(31)の下部にコ
ンクリート打設して所定厚さのコンクリート版(32)を一
体に形成させたコンクリート版付き立体トラスであり、
これは工場で仕上げたものを現場に持ち込む。尚、この
時、コンクリート構造物で必要な鉄筋からの厚さ分、つ
まり、底面から下方の鉄筋までの距離を3cm以上確保し
ておく。又、前記コンクリート版付き立体トラス(3)は
本発明者が特願平11−169099号で提案した「橋
床などの土木用のコンクリート捨て型枠付き立体トラ
ス」を使用すると良い。 (4)はコンクリート鉄筋がU
字状に折曲された接続用のU字筋であり、該U字筋
(4)は予め工場に於いて、コンクリート版付き立体ト
ラス(3)が完成後、その長手方向の各縦筋間へ引出し
可能に差し込んでおくと良い。この時、U字筋(4)に
は弾性を持たせ、若干開口側が縮められた状態でセット
しておくと良い。
FIG. 1 is a diagram showing an embodiment of the present invention, which will be described with reference to this drawing. (1) is a steel girder of a bridge, and an H-beam is used as the steel girder (1).
In addition, it is set so that the flange (11) may come above and below the steel girder (1). Reference numeral (2) denotes a large number of projections mounted on the upper surface of the flange (11) of the steel girder (1) at a predetermined pitch. As the projections (2), it is preferable to use a shaft with a head or a stud bolt. The predetermined pitch is an intermediate position of a U-shaped streak (4) described later (see FIG. 2). When the steel girder (1) is prepared, the projection (2) is welded to the upper surface of the flange (11) of the steel girder (1) in a factory beforehand to be erected. (3) is a three-dimensional truss with a concrete slab in which concrete is sunk into a lower part of a three-dimensional welded reinforcing bar (31) and a concrete slab (32) having a predetermined thickness is integrally formed;
This brings the finished product to the site. At this time, the thickness from the reinforcing bar required for the concrete structure, that is, the distance from the bottom surface to the lower reinforcing bar, should be at least 3 cm. Further, as the three-dimensional truss with a concrete plate (3), a "three-dimensional truss with concrete dumping formwork for civil engineering such as a bridge floor" proposed by the present inventor in Japanese Patent Application No. 11-169099 may be used. (4) is U concrete reinforcement
The U-shaped reinforcement (4) is a U-shaped reinforcement (4) which is bent between the longitudinal truss (3) with a concrete slab in a factory before completion. It is good to insert it so that it can be pulled out. At this time, it is preferable that the U-shaped streak (4) has elasticity and is set with the opening side slightly reduced.
【0007】図3〜図5は本発明の別実施形態を示す図
であり、これはハンチ付きの床版が一体化された構造の
ものである。これについて説明する。(1)はH形鋼を用
いた鋼製桁であり、 (2)は鋼製桁(1)のフランジ(1
1)上面に所定ピッチで多数取付けられたネジ部を有す
る突起物であり、該突起物(2)としてはスタッドボル
トやネジ棒などを用い、又、その取付けられる所定ピッ
チとしては後述するU字筋(4)の中間位置とする(図
4参照)。(3)は立体溶接鉄筋(31)の下部にコンク
リート打設して所定厚さのコンクリート版(32)を一体に
形成させたコンクリート版付き立体トラスであり、これ
は工場で仕上げたものを現場に持ち込む。尚、この時、
コンクリート構造物で必要な鉄筋からの厚さ分、つま
り、底面から下方の鉄筋までの距離を3cm以上確保して
おく(図6、図7参照)。又、前記コンクリート版付き
立体トラス(3)は本発明者が特願平11−169099
号,特願平11−184643号で提案した「橋床など
の土木用のコンクリート捨て型枠付き立体トラス」を使
用すると良い。尚、コンクリート版付き立体トラス
(3)のコンクリート版(32)の端部に、コンクリート打
設時に用いる側板(9)の上部と当接する突部(321)
を形成させたものを用いると良い(図5、図7参照)。
(4)はコンクリート鉄筋をU字状に折曲した接続用の
U字筋であり、該U字筋(4)は予め工場に於いて、コ
ンクリート版付き立体トラス(3)が完成後、その長手
方向の各縦筋間へ引出し可能に差し込んでおくと良い。
この時、U字筋(4)には弾性を持たせ、若干開口側が
縮められた状態でセットしておくと良い。
3 to 5 show another embodiment of the present invention, which has a structure in which a slab with a haunch is integrated. This will be described. (1) is a steel girder using an H-beam, and (2) is a flange (1) of the steel girder (1).
1) A projection having a plurality of threaded portions mounted on the upper surface at a predetermined pitch. A stud bolt, a screw rod, or the like is used as the projection (2). The intermediate position of the streak (4) is set (see FIG. 4). (3) is a three-dimensional truss with a concrete slab in which a concrete slab (32) having a predetermined thickness is integrally formed by casting concrete under a three-dimensional welded reinforcing bar (31). Bring to At this time,
The thickness from the reinforcing bar required for the concrete structure, that is, the distance from the bottom surface to the lower reinforcing bar, should be at least 3 cm (see FIGS. 6 and 7). The present inventor has disclosed a three-dimensional truss (3) with a concrete plate as disclosed in Japanese Patent Application No. 11-169099.
It is preferable to use a "space truss with a concrete dumping formwork for civil engineering such as a bridge floor" proposed in Japanese Patent Application No. 11-184463. In addition, a projection (321) which comes into contact with the upper part of the side plate (9) used for concrete casting is attached to the end of the concrete plate (32) of the space truss (3) with a concrete plate.
Is preferably used (see FIGS. 5 and 7).
(4) is a connecting U-shaped reinforcing steel bent in a U-shape, and the U-shaped reinforcing bar (4) is prepared in advance in a factory after the three-dimensional truss with concrete slab (3) is completed. It is good to insert so that it can be pulled out between each longitudinal streak in the longitudinal direction.
At this time, it is preferable that the U-shaped streak (4) has elasticity and is set with the opening side slightly reduced.
【0008】(5)は突起物(2)にセットした支持板
であり、該支持板(5)は金属板を折曲してコの字状に
形成させるか或いは既存の型鋼を用いる。また支持板
(5)の上面には突起物(2)挿入用の穴が穿設されて
いる。尚、折曲する形状や型鋼の形状はコの字状に限定
されるものではない。(6)は突起物(2)のネジ部に螺
合する高さ調節ナットであり、該高さ調節ナット(6)
は支持板(5)の上面と下面に取付ける。(7)は支持
板(5)の開口を下方に向けた際、その両側面から水平
に突出させて固着した複数本の取付ボルトであり、該取
付ボルト(7)はハンチの外形位置にセットした後述す
る側板(9)の上部を着脱可能に取付ける。尚、前記取
付ボルト(7)の代りにネジ棒を使用しても良い。
(8)はフランジ(11)下面から垂直に突出させた固定
ボルトであり、該固定ボルト(8)は側板(9)の下部を
着脱可能に取付ける。尚、取付ボルト(7)は予め工場
に於いて固着させると共に固定ボルト(8)も突起物
(2)と一緒に固着させると良い。(9)は金属板を折
曲して略々Sの字状及び逆Sの字状に形成した2枚から
成る側板であり、該側板(9)はハンチが形成後に取外
される。
[0008] Reference numeral (5) denotes a support plate set on the protrusion (2). The support plate (5) is formed by bending a metal plate to form a U-shape or using an existing steel mold. A hole for inserting the protrusion (2) is formed in the upper surface of the support plate (5). The bent shape and the shape of the mold steel are not limited to U-shape. (6) is a height adjusting nut screwed into the screw portion of the projection (2), and the height adjusting nut (6).
Are mounted on the upper and lower surfaces of the support plate (5). (7) is a plurality of mounting bolts that are fixed by projecting horizontally from both side surfaces of the support plate (5) when the opening of the support plate (5) is directed downward, and the mounting bolt (7) is set at the outer position of the haunch. The upper part of the side plate (9) described later is detachably attached. Note that a screw rod may be used instead of the mounting bolt (7).
(8) is a fixing bolt vertically projecting from the lower surface of the flange (11), and the fixing bolt (8) detachably attaches a lower portion of the side plate (9). It is preferable that the mounting bolt (7) is fixed in advance at the factory and the fixing bolt (8) is also fixed together with the projection (2). (9) is a side plate composed of two sheets formed by bending a metal plate into a substantially S-shape and an inverted S-shape. The side plate (9) is removed after the haunch is formed.
【0009】次に本実施形態の橋桁に於けるコンクリー
ト版付き立体トラス(3)を用いた床版の施工方法につ
いて説明する。予め工場でコンクリート版付き立体トラ
ス(3)を製作すると共にU字筋(4)を長手方向の各
縦筋間へ引出し可能に差し込んでおく。また鋼製桁
(1)を加工する工場に於いては、鋼製桁(1)のフラ
ンジ(11)上面に突起物(2)を所定ピッチで溶接して立
設させておく。先ず始めに、コンクリート版付き立体ト
ラス(3)を鋼製桁(1)間のフランジ(11)上面に配
置して敷設する。敷設後、コンクリート版付き立体トラ
ス(3)にU字筋(4)を引出し、隣接するコンクリー
ト版付き立体トラス(3)の配筋内へ押し込むと共に前
記U字筋(4)が突起物(2)の間に配置されているか
確認する。前記要領でコンクリート版付き立体トラス
(3)を全てセットさせる。その後、コンクリート版付
き立体トラス(3)の立体溶接鉄筋(31)にコンクリー
ト打設し、所定厚さの鉄筋コンクリート床が得られると
共に各コンクリート版付き立体トラス(3)を一体化さ
せて床版が形成されるのである。
Next, a method of constructing a floor slab using a three-dimensional truss (3) with a concrete slab in the bridge girder of the present embodiment will be described. A three-dimensional truss with a concrete slab (3) is manufactured in advance in a factory, and a U-shaped bar (4) is inserted between the longitudinal bars in a longitudinal direction so as to be drawn out. In a factory for processing the steel girder (1), the projections (2) are welded at a predetermined pitch on the upper surface of the flange (11) of the steel girder (1) and set up. First, a space truss (3) with a concrete slab is placed and laid on the upper surface of the flange (11) between the steel girders (1). After laying, the U-shaped reinforcement (4) is pulled out to the three-dimensional truss with concrete slab (3), and is pushed into the reinforcement of the adjacent three-dimensional truss with concrete slab (3), and the U-shaped reinforcement (4) is projected. ). The three-dimensional truss with the concrete slab (3) is all set in the above manner. After that, concrete is poured into the three-dimensional welded reinforcing bar (31) of the three-dimensional truss with concrete slab (3) to obtain a reinforced concrete floor of a predetermined thickness and the three-dimensional truss with concrete slab (3) is integrated to form a floor slab. It is formed.
【0010】この時、隣接するコンクリート版付き立体
トラス(3)の立体溶接鉄筋(31)同士はU字筋(4)
で接続され、且つU字筋(4)と突起物(2)は接触しな
いように離れた状態であるが、コンクリートが固化する
と、突起物(2)が鋼製桁(1)に固定しているので、コ
ンクリート版付き立体トラス(3)同士が連結されると
共に立体溶接鉄筋(31)は突起物(2)を介在させて鋼製桁
(1)とも固定して、浮き上がらないようにしっかりと
一体化する。又、風雨にさらされた鋼製桁(1)がさび
て突起物(2)もさびたとしても、そのさびは立体溶接鉄
筋(31)まで広がらず、強度が低下しない床版としての役
目が果たせるものとなるのである。尚、コンクリート固
化後、前記側板(9)の上部は取付ボルト(7)から外
され、下部は固定ボルト(8)から外されて前記側板
(9)は撤去される。
At this time, the three-dimensional welded reinforcing bars (31) of the adjacent three-dimensional truss with concrete slab (3) are connected with the U-shaped reinforcing bar (4).
And the U-shaped streak (4) and the projection (2) are separated so as not to contact with each other, but when the concrete is solidified, the projection (2) is fixed to the steel girder (1). Since the three-dimensional trusses with concrete slabs (3) are connected to each other, the three-dimensional welded reinforcing bar (31) is fixed to the steel girder (1) with the interposition of the projection (2), so that it does not float up. Integrate. Further, even if the steel girder (1) exposed to the weather is rusted and the protrusions (2) are also rusted, the rust does not spread to the three-dimensional welded reinforcing bar (31) and can serve as a floor slab without decreasing strength. It becomes something. After the concrete is solidified, the upper part of the side plate (9) is removed from the mounting bolt (7), the lower part is removed from the fixing bolt (8), and the side plate (9) is removed.
【0011】次に別実施形態の橋桁に於けるコンクリー
ト版付き立体トラス(3)を用いたハンチ付き床版の施
工方法について説明する。予め工場でコンクリート版付
き立体トラス(3)を製作すると共にU字筋(4)を長
手方向の各縦筋間へ引出し可能に差し込んでおく。また
鋼製桁(1)を加工する工場に於いては、鋼製桁(1)
のフランジ(11)上面に突起物(2)を所定ピッチで溶接
して立設させておくと共に前記フランジ(11)下面に固
定ボルト(8)を所定ピッチで固着させておく。先ず始め
に各突起物(2)のネジ部に高さ調節ナット(6)を1
個螺合させておき、その上へ所定長さの支持板(5)を被
せて取付けると共に各突起物(2)に高さ調節ナット
(6)を1個螺合させて支持板(5)の上面が所定高さに
なるようにセットする。そして次の支持板(5)も同様に
セットするが、各支持板(5)間にはコンクリート打設が
可能となるように隙間を設けてセットさせる(図4参
照)。次に支持板(5)から突出する取付ボルト(7)で
側板(9)上部を固定し、側板(9)下部を固定ボルト
(8)で固定させる。
Next, a method of constructing a floor slab with a haunch using a three-dimensional truss with a concrete slab (3) in a bridge girder of another embodiment will be described. A three-dimensional truss with a concrete slab (3) is manufactured in advance in a factory, and a U-shaped bar (4) is inserted between the longitudinal bars in a longitudinal direction so as to be drawn out. In a factory that processes steel girders (1), steel girders (1)
The projections (2) are welded at a predetermined pitch on the upper surface of the flange (11), and the fixing bolts (8) are fixed to the lower surface of the flange (11) at a predetermined pitch. First, a height adjusting nut (6) is attached to the thread of each protrusion (2) by one.
The support plate (5) is screwed together with a support plate (5) having a predetermined length, and a height adjusting nut (6) is screwed into each protrusion (2). Is set so that the upper surface of the is at a predetermined height. Then, the next support plate (5) is set in the same manner, but a gap is provided between the support plates (5) so that concrete can be cast (see FIG. 4). Next, the upper part of the side plate (9) is fixed with mounting bolts (7) projecting from the support plate (5), and the lower part of the side plate (9) is fixed with fixing bolts.
Fix in (8).
【0012】その後、コンクリート版付き立体トラス
(3)を支持板(5)上面に配置して敷設する。この時、
図3に示すようにコンクリート版(32)の端部を載せる場
合と、図5に示すように立体溶接鉄筋(31)の端部を載
せる場合とがある。敷設後、コンクリート版付き立体ト
ラス(3)内部からU字筋(4)を引出し、隣接するコ
ンクリート版付き立体トラス(3)の配筋内へ押し込む
と共に前記U字筋(4)が突起物(2)の間に配置され
ているか確認する。前記要領でコンクリート版付き立体
トラス(3)を全てセットさせる。その後、コンクリー
ト版付き立体トラス(3)の立体溶接鉄筋(31)にコン
クリート打設し、各コンクリート版付き立体トラス
(3)を一体化してハンチ付きの床版が形成されるので
ある。
Thereafter, the space truss (3) with a concrete plate is placed and laid on the upper surface of the support plate (5). At this time,
There are a case where the end of the concrete plate (32) is placed as shown in FIG. 3 and a case where the end of the three-dimensional welded reinforcing bar (31) is placed as shown in FIG. After laying, the U-shaped bar (4) is pulled out from the inside of the three-dimensional truss with concrete slab (3), pushed into the reinforcing bar of the adjacent three-dimensional truss with concrete slab (3), and the U-shaped bar (4) is projected. Check if it is located between 2). The three-dimensional truss with the concrete slab (3) is all set in the above manner. After that, concrete is poured into the three-dimensional welded reinforcing bar (31) of the three-dimensional truss with concrete slab (3), and the three-dimensional truss with concrete slab (3) is integrated to form a floor slab with a haunch.
【0013】この時、前記実施形態と同様に隣接するコ
ンクリート版付き立体トラス(3)の立体溶接鉄筋(3
1)は、鋼製桁(1)と直接接触して接続されていない
ので、風雨にさらされた鋼製桁(1)がさびても、その
さびは立体溶接鉄筋(31)まで広がらず、強度が低下しな
いハンチ付き床版としての役目が果たせるものとなるの
である。尚、コンクリート固化後、前記側板(9)は外
されて撤去する。
At this time, similarly to the above embodiment, the three-dimensional welded reinforcing bar (3) of the adjacent three-dimensional truss (3) with concrete plate is used.
Since 1) is not directly connected to and connected to the steel girder (1), even if the steel girder (1) exposed to the weather is rusted, the rust does not spread to the three-dimensional welded reinforcing bar (31), It can serve as a floor plate with haunch that does not decrease in strength. After the concrete is solidified, the side plate (9) is removed and removed.
【0014】[0014]
【発明の効果】本発明はこのように構成させたことによ
り、下記に記載する効果を有する。
The present invention having the above-described structure has the following effects.
【0015】請求項1のように橋梁の鋼製桁(1)のフ
ランジ(11)上面に所定ピッチで立設させた突起物
(2)と、フランジ(11)上面に配置したコンクリート
版(32)を立体溶接鉄筋(31)の下部に一体に形成するコ
ンクリート版付き立体トラス(3)と、立体溶接鉄筋
(31)内へ押し込んで接続させると共に突起物(2)に
接触しないように配置したU字筋(4)とから少なくと
も構成させ、且つコンクリートで立体溶接鉄筋(31)間
を一体化して床版が形成される構造とすることにより、
床版の結合構造が従来の如き木製型枠の組立作業や鉄筋
配筋作業が現場で行われるそれらの作業を不要とし、且
つ多くの作業員も不要となると共に工期短縮やコスト削
減及び省力化などが可能となる。又、コンクリート打設
・養生後、木製型枠の解体及び撤去作業が殆どなくな
り、木製型枠の廃棄処理も不要となるため、森林資源の
保護に貢献できるものとなる。
A projection (2) erected at a predetermined pitch on an upper surface of a flange (11) of a steel girder (1) of a bridge, and a concrete plate (32) arranged on an upper surface of the flange (11). ) And a three-dimensional truss with concrete slab (3) integrally formed under the three-dimensional welded reinforcing bar (31), and connected by pushing into the three-dimensional welded reinforcing bar (31) and arranged so as not to contact the protrusion (2). By forming at least the U-shaped reinforcement (4) and a structure in which the floor slab is formed by integrating the three-dimensional welded reinforcement (31) with concrete,
The joint structure of the floor slabs eliminates the need for conventional work of assembling wooden formwork and reinforcing bar arranging work on site, and eliminates the need for many workers, shortening the construction period, reducing costs and saving labor. And so on. Also, after concrete placement and curing, there is almost no need to dismantle and remove the wooden formwork, and there is no need to dispose of the wooden formwork, thereby contributing to the protection of forest resources.
【0016】請求項2のように鋼製桁(1)のフランジ
(11)上面に立設させたネジ部を有する突起物(2)
と、突起物(2)にセットした支持板(5)と、フランジ
(11)上面に配置する立体溶接鉄筋(31)の下部にコン
クリート版(32)を一体に形成させたコンクリート版付き
立体トラス(3)と、立体溶接鉄筋(31)内へ押し込ん
で接続させるU字筋(4)とから少なくとも構成させ、
且つコンクリートで立体溶接鉄筋(31)間を一体化して
ハンチ付きの床版が形成される構造とすることにより、
コンクリート版付き立体トラス(3)のコンクリート版
(32)は作業床兼用の捨て型枠として使用出来るため、
橋梁を構成する床版等の型枠仮設作業が省略でき、且つ
鉄筋配筋作業の効率化も促進され、従来のハンチ付き床
版の結合構造を施工する際、省力化,工期短縮,コスト削
減等の効果が発揮される。また従来の木製型枠の廃棄処
理が不要となるため、森林資源の保護に貢献できるもの
となる。
According to a second aspect of the present invention, there is provided a projection (2) having a threaded portion erected on the upper surface of a flange (11) of a steel girder (1).
A three-dimensional truss with a concrete plate in which a concrete plate (32) is formed integrally with a support plate (5) set on the protrusion (2) and a lower part of a three-dimensional welded reinforcing bar (31) arranged on the upper surface of the flange (11) (3) and a U-shaped reinforcing bar (4) to be connected by being pushed into the three-dimensional welding reinforcing bar (31),
And by making the structure that the floor slab with haunch is formed by integrating the three-dimensional welded reinforcing bars (31) with concrete,
The concrete slab (32) of the space truss with concrete slab (3) can be used as a discarded formwork that also serves as a work floor.
Temporary work of formwork such as floor slabs that make up the bridge can be omitted, and the efficiency of rebar arrangement work can be promoted.When installing the conventional joint structure of slabs with haunch, labor saving, shortening of construction period, and cost reduction And the like. In addition, since the conventional disposal of wooden formwork is not required, it can contribute to the protection of forest resources.
【0017】請求項3に示すように支持板(5)の断面
をコの字状とし、その開口を下方に向けた際の両側辺に
は、ハンチの外形位置にセットした側板(9)の上部が
着脱可能となる取付ボルト(7)を水平に突出させて固
着し、且つ側板(9)の下部が着脱可能となる固定ボル
ト(8)をフランジ(11)下面に突設させることによ
り、ハンチ外形位置に取付ける金属製の側板(9)が左
右に分離して着脱可能にハンチ用の型枠として用いるこ
とが出来るものとなる。
According to a third aspect of the present invention, the cross section of the support plate (5) is formed in a U-shape, and the side plate (9) set at the outer position of the haunch is provided on both sides when the opening thereof is directed downward. By attaching and detaching a mounting bolt (7) whose upper part is detachable horizontally and fixing it, and a fixing bolt (8) whose detachable lower part of the side plate (9) is protrudingly provided on the lower surface of the flange (11), The metal side plate (9) attached to the outer periphery of the haunch can be used as a haunch mold so that it can be detached to the left and right.
【0018】請求項4に示すように支持板(5)の取付
け高さが、その上下面に取付けた高さ調節ナット(6)
で簡単に高さ調節が可能となるため、ハンチの高さなど
の変化に対応可能なものとなる。
According to a fourth aspect of the present invention, the mounting height of the support plate (5) is adjusted by a height adjusting nut (6) mounted on upper and lower surfaces thereof.
In this case, the height can be easily adjusted, so that it is possible to cope with a change in the height of the haunch.
【0019】請求項5のようにコンクリート版付き立体
トラス(3)を支持板(5)の上面にコンクリート版(3
2)を載置させると、安定した残存型枠として使用出来る
と共に作業用の床板としても兼用出来るものとなる。一
方、支持板(5)の上面に立体溶接鉄筋(31)を載置さ
せると、コンクリート版(32)より安定性は低下するが、
残存型枠及び作業用の床板として使用でき、特にコンク
リート打設時に於いては、鉄筋材からハンチ内部が見え
てコンクリートの充填具合が良く分かると共にコンクリ
ートの流れも良いものとなる。
A three-dimensional truss (3) with a concrete plate is provided on the upper surface of the support plate (5).
When 2) is placed, it can be used both as a stable remaining formwork and as a work floor. On the other hand, when the three-dimensional welded reinforcing bar (31) is placed on the upper surface of the support plate (5), the stability is lower than that of the concrete plate (32).
It can be used as a residual formwork and a floor plate for work. Particularly, when concrete is poured, the inside of the haunch can be seen from the reinforcing steel material so that the concrete filling condition can be easily understood and the flow of the concrete can be improved.
【0020】請求項6のようにコンクリート版(32)の端
部に、側板(9)の上部と当接する突部(321)が形成
されたものを用いると、コンクリート打設時に側板
(9)の上部から外にコンクリートが回り込む恐れが殆
どなくなり、仕上がりがきれいなものとなる。
If the projection having the projection (321) in contact with the upper part of the side plate (9) is formed at the end of the concrete plate (32), the side plate (9) can be used during concrete casting. There is almost no danger of concrete spilling out from the upper part of the floor, and the finish is beautiful.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本発明の実施形態の要部を示す断面図である。FIG. 1 is a sectional view showing a main part of an embodiment of the present invention.
【図2】本実施形態の要部構造を示す説明図である。FIG. 2 is an explanatory diagram showing a main structure of the embodiment.
【図3】本実施形態の他の要部を示す断面図である。FIG. 3 is a sectional view showing another main part of the embodiment.
【図4】本実施形態のハンチ付き床版の要部構造を示す
説明図である。
FIG. 4 is an explanatory view showing a main structure of a floor slab with a haunch of the embodiment.
【図5】本実施形態の別の要部を示す断面図である。FIG. 5 is a cross-sectional view showing another main part of the embodiment.
【図6】本実施形態で使用するコンクリート版付き立体
トラスを示す説明図である。
FIG. 6 is an explanatory view showing a three-dimensional truss with a concrete plate used in the present embodiment.
【図7】別実施形態で使用するコンクリート版付き立体
トラスを示す説明図である。
FIG. 7 is an explanatory view showing a three-dimensional truss with a concrete plate used in another embodiment.
【符号の説明】[Explanation of symbols]
1 鋼製桁 11 フランジ 2 突起物 3 コンクリート版付き立体トラス 31 立体溶接鉄筋 32 コンクリート版 321 突部 4 U字筋 5 支持板 6 高さ調節ナット 7 取付ボルト 8 固定ボルト 9 側板 DESCRIPTION OF SYMBOLS 1 Steel girder 11 Flange 2 Projection 3 Three-dimensional truss with concrete plate 31 Three-dimensional welded reinforcing bar 32 Concrete plate 321 Projection 4 U-shaped bar 5 Support plate 6 Height adjustment nut 7 Mounting bolt 8 Fixing bolt 9 Side plate

Claims (6)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 橋梁の鋼製桁(1)のフランジ(11)上
    面に所定ピッチで立設し固着させた突起物(2)と、前
    記フランジ(11)上面に配置すると共に前記突起物
    (2)付近まで配置させて敷設したコンクリート版(32)
    を立体溶接鉄筋(31)の下部に一体に形成させたコンク
    リート版付き立体トラス(3)と、前記突起物(2)を
    挟んで対向する前記コンクリート版付き立体トラス
    (3)同士の立体溶接鉄筋(31)内へ押し込んで接続さ
    せると共に前記突起物(2)に接触しないように配置し
    た接続用のU字筋(4)とから少なくとも構成させ、且
    つコンクリートで前記立体溶接鉄筋(31)間を一体化し
    て床版が形成される構造としたことを特徴とする橋桁に
    於けるコンクリート版付き立体トラスを用いた床版の結
    合構造。
    1. A projection (2) erected and fixed at a predetermined pitch on an upper surface of a flange (11) of a steel girder (1) of a bridge, and a projection (2) arranged on the upper surface of the flange (11) and 2) Concrete slabs laid and laid to the vicinity (32)
    Three-dimensional truss (3) with a concrete plate integrally formed under the three-dimensional welded reinforcing bar (31), and three-dimensional welded reinforcing bar between the three-dimensional truss with a concrete plate (3) opposed to each other across the projection (2) (31) At least a connection U-shaped reinforcing bar (4) arranged so as to be pressed into the inside and connected so as not to contact the protrusion (2), and between the three-dimensional welded reinforcing bar (31) with concrete. A joint structure of a deck slab using a three-dimensional truss with a concrete slab in a bridge girder, wherein the deck slab is formed integrally.
  2. 【請求項2】 橋梁の鋼製桁(1)のフランジ(11)上
    面に所定ピッチで立設させたネジ部を有する突起物
    (2)と、該突起物(2)にセットした支持板(5)と、
    その支持板(5)上面に配置すると共に前記突起物(2)
    付近まで配置した立体溶接鉄筋(31)の下部にコンクリ
    ート版(32)を一体に形成させたコンクリート版付き立体
    トラス(3)と、前記突起物(2)を挟んで対向するコ
    ンクリート版付き立体トラス(3)同士の立体溶接鉄筋
    (31)内へ押し込んで接続させると共に前記突起物
    (2)に接触しないように配置した接続用のU字筋
    (4)とから少なくとも構成させ、且つコンクリートで
    前記立体溶接鉄筋(31)間を一体化してハンチ付きの床
    版が形成される構造としたことを特徴とする橋桁に於け
    るコンクリート版付き立体トラスを用いた床版の結合構
    造。
    2. A projection (2) having a threaded portion erected at a predetermined pitch on an upper surface of a flange (11) of a steel girder (1) of a bridge, and a support plate (2) set on the projection (2). 5) and
    The support plate (5) is disposed on the upper surface and the protrusion (2)
    A three-dimensional truss with concrete slab (3) in which a concrete slab (32) is integrally formed below a three-dimensional welded reinforcing bar (31) arranged close to the slab, and a three-dimensional truss with a concrete slab facing the projection (2) And (3) a connection U-shaped reinforcing bar (4) arranged so as to be pressed into the three-dimensional welded reinforcing bars (31) and connected so as not to contact the projections (2), and to be formed of concrete. A slab joint structure using a three-dimensional truss with a concrete slab in a bridge girder, wherein the three-dimensional welded reinforcing bars (31) are integrated to form a slab with a haunch.
  3. 【請求項3】 前記支持板(5)の断面がコの字状であ
    り、その開口を下方に向けた際の両側辺には、ハンチの
    外形位置にセットした側板(9)の上部が着脱可能とな
    る取付ボルト(7)を水平に突出させて固着し、且つ前
    記側板(9)の下部が着脱可能となる固定ボルト(8)
    をフランジ(11)下面に突設させた請求項2記載の橋桁
    に於けるコンクリート版付き立体トラスを用いた床版の
    結合構造。
    3. The support plate (5) has a U-shaped cross section, and the upper side of the side plate (9) set at the outer position of the haunch is attached to and detached from both sides when the opening thereof is directed downward. Fixing bolts (8) that allow the mounting bolts (7) to be horizontally projected and fixed, and that the lower part of the side plate (9) is detachable.
    3. The joint structure of floor slabs using a three-dimensional truss with a concrete slab in the bridge girder according to claim 2, wherein the slabs are projected from the lower surface of the flange (11).
  4. 【請求項4】 前記支持板(5)の取付け高さが、その
    上下面に取付けた高さ調節ナット(6)で調節可能と成
    す請求項2記載の橋桁に於けるコンクリート版付き立体
    トラスを用いた床版の結合構造。
    4. A three-dimensional truss with a concrete slab in a bridge girder according to claim 2, wherein the mounting height of said support plate (5) is adjustable by height adjusting nuts (6) mounted on upper and lower surfaces thereof. The joint structure of the floor slab used.
  5. 【請求項5】 前記コンクリート版付き立体トラス
    (3)を前記支持板(5)の上面に配置して敷設する
    際、前記支持板(5)の上面にコンクリート版(32)を載
    置させるか或いは立体溶接鉄筋(31)を載置させる請求
    項2記載の橋桁に於けるコンクリート版付き立体トラス
    を用いた床版の結合構造。
    5. When laying the space truss (3) with a concrete plate on the upper surface of the support plate (5), a concrete plate (32) is placed on the upper surface of the support plate (5). The joint structure of floor slabs using a three-dimensional truss with a concrete slab in the bridge girder according to claim 2, wherein the three-dimensional welded reinforcing bar (31) is placed.
  6. 【請求項6】 前記コンクリート版(32)の端部に、前記
    側板(9)の上部と当接する突部(321)が形成された
    ものを用いる請求項2記載の橋桁に於けるコンクリート
    版付き立体トラスを用いた床版の結合構造。
    6. A bridge girder according to claim 2, wherein a projection (321) is formed at an end of said concrete slab (32) to contact an upper part of said side plate (9). Joint structure of floor slab using space truss.
JP20135499A 1999-07-15 1999-07-15 Connecting structure of floor slabs using concrete truss with concrete slab in bridge girder Expired - Fee Related JP3881135B2 (en)

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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004124375A (en) * 2002-09-30 2004-04-22 Sumitomo Metal Ind Ltd Construction method for composite floor panel
JP2006144257A (en) * 2004-11-16 2006-06-08 Kawada Construction Co Ltd Half-precast floor slab
JP2008266991A (en) * 2007-04-20 2008-11-06 Maeda Road Constr Co Ltd Device for adjusting mold form member height
CN103590520A (en) * 2013-11-13 2014-02-19 钱志双 Prestress reinforcing supporting mechanism of prefabricated floor slabs and mounting method of prestress reinforcing supporting mechanism
CN103741857A (en) * 2014-01-26 2014-04-23 江苏中宝钢构有限公司 Floor system with U-shaped steel beams, steel bar trusses and floor bearing plates

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004124375A (en) * 2002-09-30 2004-04-22 Sumitomo Metal Ind Ltd Construction method for composite floor panel
JP2006144257A (en) * 2004-11-16 2006-06-08 Kawada Construction Co Ltd Half-precast floor slab
JP2008266991A (en) * 2007-04-20 2008-11-06 Maeda Road Constr Co Ltd Device for adjusting mold form member height
CN103590520A (en) * 2013-11-13 2014-02-19 钱志双 Prestress reinforcing supporting mechanism of prefabricated floor slabs and mounting method of prestress reinforcing supporting mechanism
CN103590520B (en) * 2013-11-13 2015-12-30 钱志双 A kind of prestressing force of precast floor slab strengthens supporting mechanism and mounting method thereof
CN103741857A (en) * 2014-01-26 2014-04-23 江苏中宝钢构有限公司 Floor system with U-shaped steel beams, steel bar trusses and floor bearing plates
CN103741857B (en) * 2014-01-26 2016-05-11 江苏中宝钢构有限公司 U-shaped girder steel and steel bar truss floor support plate floor system

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