JP2017203298A - Floor slab joint structure and floor slab renewal method - Google Patents

Floor slab joint structure and floor slab renewal method Download PDF

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JP2017203298A
JP2017203298A JP2016095806A JP2016095806A JP2017203298A JP 2017203298 A JP2017203298 A JP 2017203298A JP 2016095806 A JP2016095806 A JP 2016095806A JP 2016095806 A JP2016095806 A JP 2016095806A JP 2017203298 A JP2017203298 A JP 2017203298A
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floor slab
web
fixing member
fixing
steel
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JP6754219B2 (en
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政彦 岸田
Masahiko Kishida
政彦 岸田
智也 峯村
Tomoya Minemura
智也 峯村
陽介 石原
Yosuke Ishihara
陽介 石原
健 北村
Takeshi Kitamura
健 北村
郁夫 岩崎
Ikuo Iwasaki
郁夫 岩崎
聡 相浦
Satoshi Aiura
聡 相浦
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Taisei Corp
Metropolitan Expressway Co Ltd
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Taisei Corp
Metropolitan Expressway Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To propose a floor slab joint structure and floor slab renewal method for making it possible to reduce labor and time at the time of construction in floor slab renewal work and shorten a work period.SOLUTION: A floor slab joint structure 1 comprises: a steel beam 2; a floor slab 3 mounted on the top surface of the steel beam 2; and a fixing member 4 for joining the steel beam 2 and the floor slab 3. The fixing member 4 comprises: a fixation piece 43 fixed on a side surface of a web 23 of the steel beam 2; an upper piece 42 extended in a direction crossing the web 23; and a joint dowel 41 erected on the top surface of the upper piece 42. The tip of the upper piece 42 protrudes more than a side end of a flange 21. The joint dowel 41 is fixed on the tip of the upper piece 42 and is inserted into the floor slab 3.SELECTED DRAWING: Figure 2

Description

本発明は、床版接合構造および床版更新方法に関する。   The present invention relates to a floor slab joining structure and a floor slab update method.

床版更新工事として、老朽化した床版を鋼桁から撤去した後、新設の床版を鋼桁に設置する場合がある（例えば、特許文献１参照）。
床版の更新（取り換え）は、コンクリート製の既設の床版を破砕することにより細かく分割して撤去した後、新設の床版を鋼桁上に載置するのが一般的である。ところが、床版を破砕するには手間と時間がかかる。また、破砕の際に生じる騒音や振動によって近隣に影響を及ぼすおそれがある。
そのため、床版の更新方法として、既設の床版と鋼桁との接合部を切断することで、比較的簡易かつ早期に床版を撤去する場合がある。このとき、床版と鋼桁との接合部材として鋼桁の上面に突設された接合用ジベル（スタッドジベル等）は、既設の床版のコンクリートともに切断する。そのため、床版を新設する際には、既設の鋼桁の上面に新たな接合用ジベルを溶接し、この接合用ジベルを巻き込んだ状態で新設の床版を設置する。
また、特許文献２には、鋼桁のウェブの上部分を切断することで、既設の床版とともに鋼桁の上部分を撤去した後、鋼桁の上部分を備える新設の床版を既設の鋼桁の下部分と接合する床版更新方法が開示されている。 As floor slab renewal construction, after removing an old floor slab from a steel girder, a new floor slab may be installed on the steel girder (see, for example, Patent Document 1).
In order to renew (replace) the floor slab, it is common to place the new floor slab on a steel girder after the existing floor slab made of concrete is finely divided and removed. However, it takes time and effort to crush the floor slab. In addition, noise and vibration generated during crushing may affect the neighborhood.
Therefore, as a method for renewing the floor slab, there is a case where the floor slab is removed relatively easily and quickly by cutting the joint between the existing floor slab and the steel beam. At this time, a joining gibber (stud gibber or the like) protruding from the upper surface of the steel girder as a joining member between the floor slab and the steel girder is cut together with the concrete of the existing floor slab. Therefore, when a floor slab is newly installed, a new joining slab is welded to the upper surface of an existing steel girder, and the newly installed floor slab is installed in a state where the joining gibble is wound.
Moreover, in patent document 2, after removing the upper part of the steel girder together with the existing floor slab by cutting the upper part of the steel girder web, an existing floor slab having the upper part of the steel girder is installed. A method for renewing a slab that joins the lower part of a steel girder is disclosed.

特開２００５−２５６４３０号公報JP 2005-256430 A 特開２００７−２３９３６５号公報JP 2007-239365 A

鋼桁の上面に接合用ジベルを新設するためには、鋼桁の上面に残存するコンクリートをケレンして除去する必要があるため、その作業に手間がかかる。また、接合用ジベルの溶接作業にも手間がかかる。
また、鋼桁をウェブにおいて切断する方法は、鋼桁の下部分のウェブと上部分のウェブとの接合面を突き合わせた状態で接合する必要があるため、その作業に手間がかかる。また、ウェブ同士の接合部では、桁軸に沿って多数のボルト孔を形成する必要があるため、その作業にも手間がかかる。さらに、鋼桁の上フランジを撤去することで鋼桁の耐力が低下するため、鋼桁の耐力を増加させるための補強工が必要となる。
このような観点から、本発明は、床版更新工事における施工時の手間を削減し、工期短縮化を図ることを可能とした床版接合構造および床版更新方法を提案することを課題とする。 In order to install a new jointing bell on the upper surface of the steel girder, it is necessary to clean and remove the concrete remaining on the upper surface of the steel girder. In addition, it takes time to weld the joining gibber.
Moreover, since the method of cutting a steel girder in a web needs to be joined in a state in which the joining surfaces of the lower web and the upper web of the steel girder are in contact with each other, the work is troublesome. Moreover, since it is necessary to form many bolt holes along a girder axis | shaft in the junction part of webs, the operation | work takes time. Furthermore, since the proof strength of the steel girder is reduced by removing the upper flange of the steel girder, a reinforcement work is required to increase the proof strength of the steel girder.
From such a viewpoint, it is an object of the present invention to propose a floor slab joining structure and a floor slab renewal method capable of reducing labor during construction in floor slab renewal work and shortening the work period. .

前記課題を解決するための本発明の床版接合構造は、鋼桁と、前記鋼桁の上面に載置された床版と、前記鋼桁と前記床版とを接合する固定部材とを備えるものであって、前記固定部材は、前記鋼桁のウェブの側面に固定された固定片と、前記ウェブと交差する方向に延設された上片と、前記上片の上面に立設された接合用ジベルとを備えており、前記上片の先端部は前記フランジの側端よりも突出しており、前記接合用ジベルは前記上片の先端部に固定されているとともに前記床版に挿入されていることを特徴としている。
かかる床版接合構造によれば、固定部材を介して鋼桁と床版とを接合するため、鋼桁の上面に新たに接合用ジベルを形成する必要がない。そのため、床版更新工事における鋼桁の上面のケレン作業や接合用ジベルの設置作業に要する手間を省略することができる。
なお、一対の前記固定部材を前記鋼桁のウェブを挟んで対向させて、前記一対の固定部材の固定片同士を前記ウェブを貫通したボルトにより固定すれば、固定部材を固定するための固定手段を別途用いることなく固定部材を固定することができる。
また、前記固定部材が、前記鋼桁の軸方向に沿って連続する形鋼であれば、固定部材により鋼桁を補強することが可能となる。そのため、床版の更新に伴い、鋼桁に作用する力が増加した場合であっても、所望の耐力を発現することができる。 The floor slab joining structure of the present invention for solving the above-mentioned problems includes a steel girder, a floor slab placed on the upper surface of the steel girder, and a fixing member that joins the steel girder and the floor slab. The fixing member is erected on a fixing piece fixed to a side surface of the web of the steel girder, an upper piece extending in a direction crossing the web, and an upper surface of the upper piece. A top end of the upper piece protrudes from a side end of the flange, and the top end of the upper piece is fixed to the front end of the upper piece and is inserted into the floor slab. It is characterized by having.
According to such a floor slab joining structure, since the steel girder and the floor slab are joined via the fixing member, it is not necessary to newly form a joining gibber on the upper surface of the steel girder. Therefore, it is possible to save the labor required for the cleansing work on the upper surface of the steel girder and the installation work of the joining gibber in the floor slab renewal work.
In addition, if a pair of said fixing member is made to oppose on both sides of the web of the said steel girder, and the fixing pieces of said pair of fixing member are fixed with the volt | bolt which penetrated the said web, the fixing means for fixing a fixing member It is possible to fix the fixing member without separately using.
Moreover, if the said fixing member is a shaped steel continuous along the axial direction of the said steel beam, it will become possible to reinforce a steel beam with a fixing member. Therefore, even when the force acting on the steel girder increases with the update of the floor slab, the desired proof stress can be expressed.

また、本発明の床版更新方法は、鋼桁の上面に固定された既設床版を撤去する撤去工程と、前記鋼桁のウェブの側面に固定部材を固定する固定部材取付工程と、前記鋼桁の上フランジに新設床版を載置する床版載置工程とを備える床版更新方法であって、前記固定部材は前記上フランジの側方において上向きに突出する接合用ジベルを備えており、前記床版載置工程では前記新設床版に形成された箱抜きに前記接合用ジベルを挿入することを特徴としている。
かかる床版更新方法によれば、鋼桁の上面に新たに接合用ジベルを形成する必要がないため、撤去工程後の鋼桁の上面のケレン作業や接合用ジベルの設置作業に要する手間を省略することができる。また、新設床版は、接合用ジベルが箱抜きに挿入されるように配置すればよいため、位置決めが容易となり、施工性に優れている。
なお、前記固定部材取付工程では、前記ウェブを挟んで対向するように一対の前記固定部材を配設し、前記一対の固定部材および前記ウェブを貫通するボルトにナットを締着するのが望ましい。 The floor slab update method of the present invention includes a removal step of removing an existing floor slab fixed to the upper surface of a steel girder, a fixing member attaching step of fixing a fixing member to a side surface of the steel girder web, and the steel A floor slab renewal method comprising a floor slab placing step of placing a new floor slab on an upper flange of a girder, wherein the fixing member is provided with a jointing bevel projecting upward at a side of the upper flange. In the floor slab placing step, the joining gibel is inserted into a box opener formed in the newly installed floor slab.
According to this floor slab renewal method, it is not necessary to newly form a joining gibber on the upper surface of the steel girder. can do. Further, since the new floor slab may be arranged so that the joining gibber is inserted into the box, the positioning becomes easy and the workability is excellent.
In the fixing member attaching step, it is desirable that a pair of the fixing members is disposed so as to face each other with the web interposed therebetween, and a nut is fastened to a bolt passing through the pair of fixing members and the web.

本発明の床版と鋼桁の接合構造および床版更新方法によれば、床版更新工事における施工時の手間を削減し、ひいては、工期の短縮化が可能となる。   According to the joining structure of a floor slab and a steel girder and the method for renewing a floor slab according to the present invention, it is possible to reduce the labor at the time of construction in the floor slab renewal work and to shorten the work period.

本発明の実施形態に係る床版接合構造を示す斜視図である。It is a perspective view which shows the floor slab joining structure which concerns on embodiment of this invention. （ａ）は図１に示す床版接合構造の詳細を示す断面図、（ｂ）は同斜視図である。(A) is sectional drawing which shows the detail of the floor slab joining structure shown in FIG. 1, (b) is the perspective view. （ａ）〜（ｃ）は本発明の実施形態に係る床版更新方法の各工程を示す断面図である。(A)-(c) is sectional drawing which shows each process of the floor slab update method which concerns on embodiment of this invention. 他の形態に係る床版接合構造を示す斜視図である。It is a perspective view which shows the floor slab joining structure which concerns on another form. その他の形態に係る床版接合構造を示す斜視図である。It is a perspective view which shows the floor slab joining structure which concerns on another form.

本発明の実施形態では、床版更新工事として、老朽化した既設の床版を鋼桁から撤去した後、新設の床版を鋼桁に設置する場合に採用する床版接合構造およびこれを利用した床版更新方法について説明する。
本実施形態の床版接合構造１は、図１に示すように、鋼桁２と、床版３と、固定部材４とを備えている。 In the embodiment of the present invention, as a floor slab renewal work, a floor slab joining structure that is employed when a new floor slab is installed on a steel girder after the old floor slab is removed from the steel girder and the same is used. A method for updating the floor slab is described.
As shown in FIG. 1, the floor slab joining structure 1 of the present embodiment includes a steel girder 2, a floor slab 3, and a fixing member 4.

鋼桁２は、道路橋において、床版３を支持する主桁であって、既設の床版を撤去した後もそのまま残置させた既設部材である。
本実施形態の鋼桁２は、図２（ａ）に示すように、上下のフランジ２１，２２と、両フランジ２１，２２の間に設けられたウェブ２３により断面視Ｉ字状を呈している。なお、鋼桁２を構成する材料および鋼桁２の断面形状は限定されるものではない。
図２（ｂ）に示すように、上下のフランジ２１，２２とウェブ２３により形成された空間には、所定の間隔をあけてリブ２４，２４，…が設けられている。なお、リブ２４は、必要に応じて設置すればよい。
図１に示すように、本実施形態では、１枚の床版３を３本の鋼桁２により支持している。なお、床版３を支持する鋼桁２の数は限定されるものではない。 The steel girder 2 is a main girder that supports the floor slab 3 in the road bridge, and is an existing member that is left as it is after the existing floor slab is removed.
As shown in FIG. 2A, the steel girder 2 of the present embodiment has an I-shaped cross-sectional view due to upper and lower flanges 21 and 22 and a web 23 provided between both flanges 21 and 22. . In addition, the material which comprises the steel beam 2 and the cross-sectional shape of the steel beam 2 are not limited.
As shown in FIG. 2 (b), ribs 24, 24,... Are provided in the space formed by the upper and lower flanges 21, 22 and the web 23 with a predetermined interval. In addition, what is necessary is just to install the rib 24 as needed.
As shown in FIG. 1, in this embodiment, one floor slab 3 is supported by three steel girders 2. The number of steel girders 2 that support the floor slab 3 is not limited.

床版３は、図１に示すように、鋼桁２の上面に載置された、コンクリート製の板状部材である。本実施形態では、床版３として、工場等で生産されたプレキャスト部材を採用する。
床版３には、鋼桁２の位置に対応して複数の箱抜き３１が形成されている。本実施形態では、各鋼桁２の位置に対応して、鋼桁２の桁軸に沿った３つの箱抜き３１が２列並設されている。各箱抜き３１の列は、鋼桁２の上フランジ２１の外側に形成されている（図２（ａ）参照）。すなわち、桁軸と交差する方向で隣り合う箱抜き３１，３１は、図２（ａ）に示すように、上フランジ２１を挟んで対向するように形成されている。箱抜き３１は、平面視矩形状の開口であって、床版３を上下に貫通している。
また、床版３には、隣接する他の床版３との接合部に、継手部３２，３２，…が形成されている。継手部３２は、床版３の縁に形成された凹部であって、床版３同士を付き合わせた際に、平面視矩形状の凹部（箱抜き）が形成されるように構成されている。なお、継手部３２の構成（形状や配置等）は限定されるものではない。また、継手部３２は必要に応じて形成すればよい。 As shown in FIG. 1, the floor slab 3 is a concrete plate-like member placed on the upper surface of the steel girder 2. In the present embodiment, a precast member produced at a factory or the like is employed as the floor slab 3.
The floor slab 3 is formed with a plurality of box openings 31 corresponding to the positions of the steel girders 2. In this embodiment, corresponding to the position of each steel girder 2, two rows of three box openings 31 along the girder axis of the steel girder 2 are arranged side by side. Each box 31 is formed outside the upper flange 21 of the steel beam 2 (see FIG. 2A). That is, the box openings 31 and 31 adjacent to each other in the direction intersecting the beam axis are formed so as to face each other with the upper flange 21 interposed therebetween, as shown in FIG. The box opener 31 is a rectangular opening in plan view, and penetrates the floor slab 3 up and down.
Further, joint portions 32, 32,... Are formed on the floor slab 3 at joints with other adjacent floor slabs 3. The joint portion 32 is a recess formed at the edge of the floor slab 3, and is configured such that when the floor slabs 3 are attached to each other, a rectangular recess (box removal) in plan view is formed. . The configuration (shape, arrangement, etc.) of the joint portion 32 is not limited. Moreover, what is necessary is just to form the joint part 32 as needed.

固定部材４は、鋼桁２と床版３との接合部に配置されている。
固定部材４は、図２（ａ）に示すように、固定部材本体４０と接合用ジベル４１とを備えている。
本実施形態の固定部材本体４０は、鋼桁２のウェブ２３の側面に固定された固定片４３および固定片４３（ウェブ２３）と交差する方向に延設された上片４２を備えたいわゆる山形鋼により構成されている。なお、固定部材本体４０を構成する材料は、鋼桁２の上フランジ２１とウェブ２３との角部（角付近）に固定することが可能であれば限定されるものではなく、例えば溝形鋼により構成してもよい。
本実施形態では、ウェブ２３を挟んで対向するように一対の固定部材４，４を配置し、両固定部材４，４の固定片４３同士を、ウェブ２３を貫通したボルト４４により固定している。また、固定部材４を固定するために使用するボルト４４の本数や配置は限定されるものではない。 The fixing member 4 is disposed at the joint between the steel beam 2 and the floor slab 3.
As shown in FIG. 2A, the fixing member 4 includes a fixing member main body 40 and a joining dowel 41.
The fixing member main body 40 of the present embodiment includes a fixing piece 43 fixed to the side surface of the web 23 of the steel girder 2 and a so-called mountain shape provided with an upper piece 42 extending in a direction crossing the fixing piece 43 (web 23). It is made of steel. In addition, the material which comprises the fixing member main body 40 will not be limited if it can fix to the corner | angular part (corner vicinity) of the upper flange 21 and the web 23 of the steel beam 2, for example, a channel steel You may comprise by.
In the present embodiment, a pair of fixing members 4, 4 are arranged so as to face each other with the web 23 interposed therebetween, and the fixing pieces 43 of both the fixing members 4, 4 are fixed by bolts 44 penetrating the web 23. . Further, the number and arrangement of the bolts 44 used for fixing the fixing member 4 are not limited.

上片４２は、固定片４３の上フランジ２１側の端部から、上フランジ２１の下面に沿って延設されている。上片４２の上面は、上フランジ２１の下面との間に隙間を有していてもよいし、上フランジ２１の下面に当接していてもよい。
上片４２の先端部は、上フランジ２１の側端よりも外側に突出していて、床版３の箱抜き３１の下方に位置している。
接合用ジベル４１は、上片４２の先端部上面に立設されていて、箱抜き３１に挿入されている。本実施形態の接合用ジベル４１は、床版３の厚さの１／２程度以上の高さを有していて、上端が床版３の高さ方向中間部よりも上側に位置している。
本実施形態では、接合用ジベル４１として、図２（ｂ）に示すように孔あき鋼板ジベルを採用する。なお、接合用ジベル４１の形状寸法は限定されない。 The upper piece 42 extends from the end of the fixed piece 43 on the upper flange 21 side along the lower surface of the upper flange 21. The upper surface of the upper piece 42 may have a gap with the lower surface of the upper flange 21, or may be in contact with the lower surface of the upper flange 21.
The tip of the upper piece 42 protrudes outward from the side end of the upper flange 21 and is located below the box opening 31 of the floor slab 3.
The joining gibber 41 is erected on the upper surface of the tip of the upper piece 42 and is inserted into the box opener 31. The joining gibber 41 of the present embodiment has a height that is about ½ or more of the thickness of the floor slab 3, and the upper end is located above the intermediate portion in the height direction of the floor slab 3. .
In the present embodiment, a perforated steel plate gibel is adopted as the joining gibber 41 as shown in FIG. In addition, the shape dimension of the jivel 41 for joining is not limited.

次に、本実施形態の床版接合構造１を利用した床版更新方法について説明する。
床版更新方法は、撤去工程と、固定部材取付工程と、床版載置工程とを備えている。
撤去工程は、図３（ａ）に示すように、鋼桁２の上面に固定された既設床版３ａを撤去する工程である。
本実施形態では、コンクリートブレーカーＭを使用して、既設床版３ａを破砕することで、既設床版３ａを撤去する。このとき、鋼桁２の上面に突設された接合用ジベル４ａも既設床版３ａとともに撤去する。なお、既設床版３ａの撤去方法は限定されるものではない。例えば、コンクリートカッターを利用して複数に分割して撤去してもよいし、ワイヤーソー等により鋼桁２との接合部を切断することにより撤去してもよい。 Next, a floor slab update method using the floor slab joining structure 1 of the present embodiment will be described.
The floor slab update method includes a removal step, a fixing member attachment step, and a floor slab placement step.
A removal process is a process of removing the existing floor slab 3a fixed to the upper surface of the steel beam 2, as shown to Fig.3 (a).
In the present embodiment, the existing floor slab 3a is removed by crushing the existing floor slab 3a using the concrete breaker M. At this time, the joining bevel 4a protruding from the upper surface of the steel girder 2 is also removed together with the existing floor slab 3a. In addition, the removal method of the existing floor slab 3a is not limited. For example, it may be divided into a plurality of pieces using a concrete cutter and removed by cutting the joint with the steel beam 2 with a wire saw or the like.

固定部材取付工程は、鋼桁２に固定部材４を固定する工程である。
固定部材４は、図３（ｂ）に示すように、鋼桁２の上フランジ２１の下面とウェブ２２の側面との角部に固定する。すなわち、固定部材４は、上片４２を上フランジ２１の下面と平行に配置するとともに、固定片４３をウェブ２２に当接させた状態で固定する。
なお、ウェブ２２には、ボルト４４を挿通するための貫通孔を予め形成しておく。
本実施形態では、一対の固定部材４，４を、ウェブ２２を挟んで対向するように添設し、これらの固定部材４，４およびウェブ２２を貫通するボルト４４にナット４５を締着することで、固定部材４，４を鋼桁２に固定する。
固定部材４，４を鋼桁２に固定すると、図３（ｃ）に示すように、各固定部材４の接合用ジベル４１が、上フランジ２１の側方において、上向きに突出した状態となる。 The fixing member attaching step is a step of fixing the fixing member 4 to the steel beam 2.
As shown in FIG. 3B, the fixing member 4 is fixed to a corner portion between the lower surface of the upper flange 21 of the steel beam 2 and the side surface of the web 22. That is, the fixing member 4 fixes the upper piece 42 in parallel with the lower surface of the upper flange 21 and fixes the fixing piece 43 in contact with the web 22.
The web 22 is previously formed with a through hole for inserting the bolt 44.
In the present embodiment, a pair of fixing members 4 and 4 are attached so as to face each other with the web 22 interposed therebetween, and a nut 45 is fastened to a bolt 44 penetrating the fixing members 4 and 4 and the web 22. Then, the fixing members 4 and 4 are fixed to the steel beam 2.
When the fixing members 4 and 4 are fixed to the steel girder 2, as shown in FIG. 3C, the joining gibber 41 of each fixing member 4 protrudes upward on the side of the upper flange 21.

床版載置工程は、鋼桁２の上フランジ２１に床版３を載置する工程である。
図３（ｃ）に示すように、床版３は、下面において開口する（床版３を貫通する）箱抜き３１に接合用ジベル４１が挿入されるように、載置する。
床版３を載置したら、箱抜き３１および継手部３２内に充填材５を充填する（図２（ａ）参照）。なお、充填材を構成する材料は、硬化して所定の強度を発現するものであれば限定されるものではないが、例えば、モルタルを使用すればよい。 The floor slab placing step is a step of placing the floor slab 3 on the upper flange 21 of the steel girder 2.
As shown in FIG. 3C, the floor slab 3 is placed so that the joining gibber 41 is inserted into the box opener 31 that opens on the lower surface (through the floor slab 3).
When the floor slab 3 is placed, the box material 31 and the joint portion 32 are filled with the filler 5 (see FIG. 2A). In addition, the material which comprises a filler will not be limited if it hardens | cures and expresses predetermined | prescribed intensity | strength, For example, what is necessary is just to use mortar.

本実施形態の床版接合構造１および床版更新方法によれば、固定部材４，４，…を介して鋼桁２と床版３とを接合するため、鋼桁２の上面に新たに接合用ジベルを形成する必要がない。そのため、既設床版撤去後の鋼桁２の上面のケレン作業や接合用ジベルの設置作業に要する手間を省略することができる。
また、一対の固定部材４，４をウェブ２３を挟んで対向させた状態でボルト接合するため、固定部材４，４を固定するための固定手段を別途用いる必要がない。そのため、材料費および施工時の手間の低減化が可能である。
また、床版３は、接合用ジベル４１，４１，…が箱抜き３１，３１，…に挿入されるように配置すればよいため、床版３の位置決めが容易となり、施工性に優れている。
鋼桁２のウェブ２３には、ボルト４４を挿通するための貫通孔を形成するが、ウェブ２３は、両面から挟持するように配設された固定部材４，４の固定片４３，４３により補強されている。 According to the floor slab joining structure 1 and the floor slab renewal method of the present embodiment, the steel girder 2 and the floor slab 3 are joined via the fixing members 4, 4,. There is no need to form a gibber. For this reason, it is possible to omit the labor required for the cleansing work on the upper surface of the steel girder 2 after the existing floor slab is removed and the work for installing the joining gibber.
Further, since the pair of fixing members 4 and 4 are bolted in a state of being opposed to each other with the web 23 interposed therebetween, it is not necessary to separately use fixing means for fixing the fixing members 4 and 4. Therefore, it is possible to reduce material costs and labor during construction.
Moreover, since the floor slab 3 should just be arrange | positioned so that the jibels 41, 41, ... for joining may be inserted in the box opening 31, 31, ..., positioning of the floor slab 3 becomes easy and it is excellent in workability. .
A through hole for inserting a bolt 44 is formed in the web 23 of the steel girder 2, and the web 23 is reinforced by fixing pieces 43 and 43 of fixing members 4 and 4 arranged so as to be sandwiched from both sides. Has been.

以上、本発明に係る実施形態について説明した。しかし、本発明は、前述の実施形態に限られず、前記の各構成要素については、本発明の趣旨を逸脱しない範囲で、適宜変更が可能である。
例えば、前記実施形態では、鋼桁２の桁軸に沿って、複数の固定部材４，４，…を設置する場合について説明したが、図４に示すように、固定部材４は、桁軸に沿って連続した部材であってもよい。すなわち、固定部材４の固定部材本体４０として、桁軸に沿って連続した形鋼材を使用してもよい。この固定部材４によれば、鋼桁２（上フランジ２１）の補強部材としても機能する。そのため、床版３の更新に伴い、鋼桁２に作用する力が増加した場合であっても、所望の耐力を発現させることができる。
また、前記実施形態では、固定部材４の接合用ジベルとして、孔あき鋼板ジベルを採用したが、接合用ジベルを構成する材料は限定されるものではなく、例えば、図５に示すように、スタッドジベルにより構成してもよい。
固定部材４は、工場製作したものを搬入して使用してもよいし、現地にて形鋼材に接合用ジベル４１を溶接して製作してもよい。なお、接合用ジベル４１と固定部材本体４０との接合方法は限定されない。
床版３の箱抜き３１は、接合用ジベル４１の挿入が可能となるように、下側が開口していればよく、必ずしも床版３を貫通している必要はない。
鋼桁２と床版３との間には、必要に応じて間詰材を介設する。 The embodiment according to the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and the above-described components can be appropriately changed without departing from the spirit of the present invention.
For example, in the said embodiment, although the case where the some fixing member 4,4, ... was installed along the girder axis | shaft of the steel girder 2 was demonstrated, as shown in FIG. It may be a continuous member. That is, as the fixing member main body 40 of the fixing member 4, a shape steel material continuous along the girder axis may be used. According to this fixing member 4, it functions also as a reinforcement member of the steel beam 2 (upper flange 21). Therefore, even when the force acting on the steel girder 2 increases with the update of the floor slab 3, the desired proof stress can be expressed.
Moreover, in the said embodiment, although the perforated steel plate gibel was employ | adopted as the jivel for joining of the fixing member 4, the material which comprises the jivel for joining is not limited, For example, as shown in FIG. You may comprise by a giver.
The fixing member 4 may be used after being brought into a factory, or may be manufactured by welding a welding gibber 41 to a shape steel material on site. In addition, the joining method of the jivel 41 for joining and the fixing member main body 40 is not limited.
The box opening 31 of the floor slab 3 is not necessarily required to penetrate the floor slab 3 as long as the lower side is open so that the joining bevel 41 can be inserted.
Between the steel girder 2 and the floor slab 3, a filling material is interposed as necessary.

１ 床版接合構造
２ 鋼桁
２１ 上フランジ（上側のフランジ）
２２ 下フランジ
２３ ウェブ
３ 床版（新設床版）
３１ 箱抜き
４ 固定部材
４１ 接合用ジベル
４２ 上片
４３ 固定片
４４ ボルト
４５ ナット 1 Floor slab joint structure 2 Steel girder 21 Upper flange (upper flange)
22 Lower flange 23 Web 3 Floor slab (newly installed floor slab)
31 Box removal 4 Fixing member 41 Joining bell 42 Upper piece 43 Fixing piece 44 Bolt 45 Nut

Claims (5)

鋼桁と、
前記鋼桁の上面に載置された床版と、
前記鋼桁と前記床版とを接合する固定部材と、を備える床版接合構造であって、
前記固定部材は、前記鋼桁のウェブの側面に固定された固定片と、
前記ウェブと交差する方向に延設された上片と、
前記上片の上面に立設された接合用ジベルと、を備えており、
前記上片の先端部は、前記フランジの側端よりも突出しており、
前記接合用ジベルは、前記上片の先端部に固定されているとともに前記床版に挿入されていることを特徴とする、床版接合構造。 Steel girders,
A floor slab placed on the upper surface of the steel beam;
A floor slab joining structure comprising a fixing member that joins the steel beam and the floor slab,
The fixing member includes a fixing piece fixed to a side surface of the web of the steel beam,
An upper piece extending in a direction crossing the web;
And a joining gibber erected on the upper surface of the upper piece,
The tip of the upper piece protrudes from the side end of the flange,
The joining slab is fixed to the tip of the upper piece and is inserted into the floor slab. 一対の前記固定部材が、前記鋼桁のウェブを挟んで対向しており、
前記一対の固定部材の固定片同士が、前記ウェブを貫通したボルトにより固定されていることを特徴とする、請求項１に記載の床版接合構造。 A pair of the fixing members are opposed to each other across the steel girder web,
The floor slab joining structure according to claim 1, wherein fixing pieces of the pair of fixing members are fixed by bolts penetrating the web. 前記固定部材が、前記鋼桁の軸方向に沿って連続する形鋼であることを特徴とする、請求項１または請求項２に記載の床版接合構造。   The floor slab joining structure according to claim 1, wherein the fixing member is a shaped steel continuous along the axial direction of the steel beam. 鋼桁の上面に固定された既設床版を撤去する撤去工程と、
前記鋼桁のウェブの側面に固定部材を固定する固定部材取付工程と、
前記鋼桁の上フランジに新設床版を載置する床版載置工程と、を備える床版更新方法であって、
前記固定部材は、前記上フランジの側方において上向きに突出する接合用ジベルを備えており、
前記床版載置工程では、前記新設床版に形成された箱抜きに前記接合用ジベルを挿入することを特徴とする、床版更新方法。 A removal step of removing the existing floor slab fixed to the upper surface of the steel beam;
A fixing member attaching step for fixing a fixing member to a side surface of the steel girder web;
A floor slab update method comprising: a floor slab placing step of placing a new floor slab on an upper flange of the steel beam,
The fixing member is provided with a jointing bell that protrudes upward at a side of the upper flange,
In the floor slab placing step, the joining spar is inserted into a box opener formed in the newly installed floor slab. 前記固定部材取付工程では、前記ウェブを挟んで対向するように一対の前記固定部材を配設し、前記一対の固定部材および前記ウェブを貫通するボルトにナットを締着することを特徴とする、請求項４に記載の床版更新方法。   In the fixing member attaching step, the pair of fixing members are disposed so as to face each other with the web interposed therebetween, and a nut is fastened to a bolt penetrating the pair of fixing members and the web. The floor slab update method according to claim 4.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112018004587T5 (en) 2017-10-20 2020-07-02 Denso Corporation Actuator
JP2020159104A (en) * 2019-03-27 2020-10-01 首都高速道路株式会社 Joint structure and joining method for floor slab

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5431773Y2 (en) * 1975-06-24 1979-10-04
US4972537A (en) * 1989-06-05 1990-11-27 Slaw Sr Robert A Orthogonally composite prefabricated structural slabs
JPH083933A (en) * 1994-06-17 1996-01-09 Ishikawajima Constr Materials Co Ltd Installation method for floor slab to bridge girder and floor slab receiving mount thereof
JPH09273116A (en) * 1996-04-04 1997-10-21 Nippon Shinshiyuku Sochi Kogyo Kk Expansion joint bearing body for steel highway bridge, construction of expansion joint-mounting section of the bridge, and execution method of expansion joint in the bridge
JP2002332609A (en) * 2001-05-09 2002-11-22 Dps Bridge Works Co Ltd Connecting-section structure of corrugated steel plate and concrete floor slab in corrugated steel-plate web pc bridge
JP2003055916A (en) * 2001-08-15 2003-02-26 Oriental Construction Co Ltd Form for concrete floor slab of corrugated steel plate
JP2004116139A (en) * 2002-09-26 2004-04-15 Sho Bond Constr Co Ltd Reinforcement method for main girder of existing bridge
JP2005076289A (en) * 2003-09-01 2005-03-24 Asahi Kasei Construction Materials Co Ltd Panel fixing structure
JP2005256430A (en) * 2004-03-11 2005-09-22 Pc Bridge Co Ltd Joining structure of steel main girder and precast pc floor slab of steel composite girder bridge by high strength stud dowel and spiral reinforcement
JP2007239365A (en) * 2006-03-10 2007-09-20 Kawada Industries Inc Replacement method of bridge concrete floor plate and concrete floor plate
JP2008280683A (en) * 2007-05-08 2008-11-20 Mitsui Eng & Shipbuild Co Ltd Bridge using reinforced concrete floor slab and a small number of main girders
JP2009079401A (en) * 2007-09-26 2009-04-16 Nippon Steel Engineering Co Ltd Girder structure using corrugated steel plate web
JP2013185398A (en) * 2012-03-09 2013-09-19 Yokogawa Sumikin Bridge Corp Floor slab structure using sandwich type composite floor slab panel

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5431773Y2 (en) * 1975-06-24 1979-10-04
US4972537A (en) * 1989-06-05 1990-11-27 Slaw Sr Robert A Orthogonally composite prefabricated structural slabs
JPH083933A (en) * 1994-06-17 1996-01-09 Ishikawajima Constr Materials Co Ltd Installation method for floor slab to bridge girder and floor slab receiving mount thereof
JPH09273116A (en) * 1996-04-04 1997-10-21 Nippon Shinshiyuku Sochi Kogyo Kk Expansion joint bearing body for steel highway bridge, construction of expansion joint-mounting section of the bridge, and execution method of expansion joint in the bridge
JP2002332609A (en) * 2001-05-09 2002-11-22 Dps Bridge Works Co Ltd Connecting-section structure of corrugated steel plate and concrete floor slab in corrugated steel-plate web pc bridge
JP2003055916A (en) * 2001-08-15 2003-02-26 Oriental Construction Co Ltd Form for concrete floor slab of corrugated steel plate
JP2004116139A (en) * 2002-09-26 2004-04-15 Sho Bond Constr Co Ltd Reinforcement method for main girder of existing bridge
JP2005076289A (en) * 2003-09-01 2005-03-24 Asahi Kasei Construction Materials Co Ltd Panel fixing structure
JP2005256430A (en) * 2004-03-11 2005-09-22 Pc Bridge Co Ltd Joining structure of steel main girder and precast pc floor slab of steel composite girder bridge by high strength stud dowel and spiral reinforcement
JP2007239365A (en) * 2006-03-10 2007-09-20 Kawada Industries Inc Replacement method of bridge concrete floor plate and concrete floor plate
JP2008280683A (en) * 2007-05-08 2008-11-20 Mitsui Eng & Shipbuild Co Ltd Bridge using reinforced concrete floor slab and a small number of main girders
JP2009079401A (en) * 2007-09-26 2009-04-16 Nippon Steel Engineering Co Ltd Girder structure using corrugated steel plate web
JP2013185398A (en) * 2012-03-09 2013-09-19 Yokogawa Sumikin Bridge Corp Floor slab structure using sandwich type composite floor slab panel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112018004587T5 (en) 2017-10-20 2020-07-02 Denso Corporation Actuator
JP2020159104A (en) * 2019-03-27 2020-10-01 首都高速道路株式会社 Joint structure and joining method for floor slab
JP7221105B2 (en) 2019-03-27 2023-02-13 首都高速道路株式会社 Joint structure and floor slab joint method

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