JP2005023726A - Joining structure of beam and floor slab and joining method for beam and floor slab - Google Patents

Joining structure of beam and floor slab and joining method for beam and floor slab Download PDF

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JP2005023726A
JP2005023726A JP2003270164A JP2003270164A JP2005023726A JP 2005023726 A JP2005023726 A JP 2005023726A JP 2003270164 A JP2003270164 A JP 2003270164A JP 2003270164 A JP2003270164 A JP 2003270164A JP 2005023726 A JP2005023726 A JP 2005023726A
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plate
floor slab
girder
fixing
concrete floor
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JP4390494B2 (en
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Yoshihiro Tanaka
田中良弘
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Taisei Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection structure of a beam and a floor slab having excellent structure characteristic and construction property and to provide a connection method for the beam and the floor slab. <P>SOLUTION: A plurality of concrete floor slabs 4 is provided on an upper face of the beam 2 to nip a plate 3 provided with a plurality of plate holes 31 extending in the direction of extension of the beam 2 by providing on the upper face of the beam 2 protrudedly. A fixing bar body 7 composed of a fixing plate 72 and a bar body 71 is screwed and inserted into a fixing nut 6 buried into the concrete floor slab 4 by passing through the plate holes 31. Filler 8 is filled into a space 5 formed by end faces 41, 41 of the beam 2 and the plurality of concrete floor slabs 4, 4, 4 to construct the connection structure of the beam and the floor slabs. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、鋼製又はコンクリート製の桁と該桁上に設けた床版との接合構造及びその接合方法に関するものである。   The present invention relates to a joining structure between a steel or concrete girder and a floor slab provided on the girder and a joining method thereof.

鋼製ジャケットを構成する鋼製桁とコンクリート床版とを接合する接合構造としては、鋼製桁にせん断伝達性能を有するジベル（スタッドジベル）を設けることなく、コンクリート床版の端面と鋼製桁で囲まれた空間に例えば無収縮性のコンクリートを充填することにより、床版を桁支承上に単純支持させる接合構造が構築されてきた。
一方、橋梁におけるコンクリート製桁とコンクリート製床版とを接合する接合構造としては、桁に予めスタッドジベルを設けておき、コンクリート床版の端面とコンクリート製桁で囲まれた空間にコンクリートを充填して構成した接合構造が構築されてきた。
ところで、スタッドジベルを設ける主な目的は、水平力が床版に作用した場合でもかかるスタッドジベルのせん断抵抗によって床版が横ずれしないようにすることである。さらに、頭付きスタッドジベルを使用することにより、ジベルが床版から容易に引抜けるのを防止することができる。 The joint structure for joining the steel girders and the concrete slabs that constitute the steel jacket is that the end faces of the concrete slabs and the steel girders are provided without providing the girders (stud gibbles) with shear transmission performance in the steel girders. For example, a non-shrinkable concrete is filled in a space surrounded by a joint structure in which a floor slab is simply supported on a girder support.
On the other hand, as a joint structure for joining a concrete girder and a concrete floor slab in a bridge, stud gibbles are provided in advance in the girder, and concrete is filled into the space surrounded by the end face of the concrete floor slab and the concrete girder. The joint structure constituted by the above has been constructed.
By the way, the main purpose of providing the stud gibber is to prevent the floor slab from slipping due to the shear resistance of the stud gibble even when a horizontal force acts on the floor slab. Further, by using the headed stud dowel, it is possible to prevent the dowel from being easily pulled out from the floor slab.

特許文献１においては、上フランジ上面に多数のスタッドジベルｂを配した鋼製桁ａとプレキャストコンクリート床版ｃからなる鋼合成複合橋が開示されている（図１１参照）。
特開平１１−２２２８１４号公報 Patent Document 1 discloses a steel composite composite bridge composed of a steel girder a and a precast concrete floor slab c in which a large number of stud dowels b are arranged on the upper surface of an upper flange (see FIG. 11).
JP-A-11-222814

解決しようとする問題点は、以下の点である。
＜１＞床版を桁上に単純支持した接合構造では、桁と床版の一体化を図ることができず、床版の横ずれの懸念があり、また、桁と床版が一体化した構造に比べて桁及び床版の断面が大きくなって不経済である。
＜２＞スタッドジベルを桁上に設けた場合には床版の横ずれは防止できるものの、多数のスタッドジベルを配する必要から桁幅が大きくならざるを得ない。さらに、スタッドジベルが障害となり床版の設置が困難である。
＜３＞スタッドジベルを桁上に設けた場合でも桁と床版の一体化構造とはなり得ないため、桁と床版が一体化した構造に比べて桁及び床版の断面が大きくなって不経済である。
The problems to be solved are as follows.
<1> In the joint structure in which the floor slab is simply supported on the girder, the girder and the floor slab cannot be integrated, there is a concern about the lateral displacement of the floor slab, and the structure in which the girder and the floor slab are integrated. Compared with, the cross sections of the girders and floor slabs are large and uneconomical.
<2> When the stud gibber is provided on the girders, the lateral displacement of the floor slab can be prevented, but the girder width must be increased due to the necessity of arranging a large number of stud gibels. Furthermore, it is difficult to install a floor slab due to an obstacle in the stud gibber.
<3> Even if the stud gibber is provided on the girders, the structure of the girders and floor slabs cannot be integrated. It is uneconomical.

本発明の桁と床版の接合構造は、桁と、前記桁の上面に突設した該桁の延伸方向に伸びるプレートと、前記桁の上面に前記プレートを挟むように設置した複数のコンクリート床版と、からなり、前記プレートは該プレート表面に複数のプレート穴を設けてなり、前記桁と複数の前記コンクリート床版の端面とから形成される空間に充填した充填材によって前記桁と複数の前記コンクリート床版を一体化したことを特徴とする。   The joining structure of a girder and a floor slab of the present invention includes a girder, a plate projecting from the upper surface of the girder and extending in the extending direction of the girder, and a plurality of concrete floors installed so as to sandwich the plate between the upper surface of the girder A plate, and the plate is provided with a plurality of plate holes on the plate surface, and the spar and the plurality of spar by a filler filled in a space formed by the spar and a plurality of end faces of the concrete floor slab. The concrete floor slab is integrated.

また、本発明の桁と床版の接合構造は、前記する桁と床版の接合構造において、ナットと該ナットの一端に設けた定着板とからなる定着ナットを、該ナットの他の一端を前記プレート側に配置して前記コンクリート床版内に複数設けて前記コンクリート床版を構成し、棒体と該棒体の一端に設けた定着プレートとからなる定着棒体において該棒体の他の一端を前記プレート穴に貫通させて前記ナットに螺挿させたことを特徴とする。   The girder and floor slab joining structure of the present invention is the girder and floor slab joining structure described above, wherein a fixing nut comprising a nut and a fixing plate provided at one end of the nut is connected to the other end of the nut. A plurality of the concrete floor slabs are arranged on the plate side to constitute the concrete floor slab, and in the fixing rod body composed of a rod body and a fixing plate provided at one end of the rod body, One end is penetrated to the plate hole and screwed into the nut.

また、本発明の桁と床版の接合構造は、前記する桁と床版の接合構造において、前記プレートの上下又はプレート延伸方向に設けた複数の前記プレート穴に複数の前記定着棒体を千鳥配置で貫通方向を変えて貫通させ、対向する前記コンクリート床版内に設けた複数の前記ナットに前記棒体を螺挿させたことを特徴とする。   Further, the girder and floor slab joining structure of the present invention is the staggered structure of the girder and floor slab described above, wherein a plurality of fixing rod bodies are staggered in a plurality of plate holes provided in the vertical direction of the plate or in the plate extending direction. The rod body is screwed into the plurality of nuts provided in the concrete floor slabs opposed to each other by changing the penetration direction in the arrangement.

さらに、前記する桁と床版の接合構造を構築する本発明の桁と床版の接合方法は、前記桁の上面に前記プレートを挟むように前記コンクリート床版を該コンクリート床版の端面と前記プレートに間隔を置いて設置し、前記プレート穴を貫通した前記定着棒体を前記ナットに螺挿し、前記桁と複数の前記コンクリート床版の端面とから形成される空間に前記充填材を充填することを特徴とする。
Further, in the method for joining a girder and a floor slab according to the present invention for constructing the joining structure of the girder and the floor slab, the concrete floor slab is placed on the end surface of the concrete floor slab so that the plate is sandwiched between the upper surfaces of the girder Installed at intervals in the plate, screwed into the nut, the fixing rod that penetrated the plate hole, and filled the filler into the space formed by the girders and the end faces of the plurality of concrete floor slabs It is characterized by that.

本発明の桁と床版の接合構造及び桁と床版の接合方法は、以下の利点がある。
＜１＞プレート穴を備えたプレートと充填材として使用する繊維補強セメント系混合材料を組み合わせることにより、スタッドジベルを使用する場合と比較して接合部の桁幅の狭小化を図ることができる。
＜２＞桁から突設したプレートとプレート穴を貫通させた定着棒体と充填材として使用する繊維補強セメント系混合材料とを組み合わせることにより、桁と床版の一体化を図ることができる。したがって、桁と床版に生じる断面力を低減でき、桁及び床版の断面をより小さくすることができるため経済的である。
＜３＞床版を桁上に設置するに際し、桁上中央付近にはプレートが突設しているだけで多数のスタッドジベルなどが存在しないため、床版を所定位置に簡易かつ迅速に設置することが可能である。さらに、コンクリート製床版の製作にあたり、型枠形状が複雑になることもないため、床版の製作作業が容易となる。
The joining structure of a girder and a floor slab and the joining method of a girder and a floor slab of the present invention have the following advantages.
<1> By combining a plate provided with a plate hole and a fiber-reinforced cement-based mixed material used as a filler, it is possible to narrow the girder width of the joint as compared with the case where a stud gibber is used.
<2> By combining a plate projecting from a girder, a fixing rod passing through a plate hole, and a fiber-reinforced cement-based mixed material used as a filler, the girder and the floor slab can be integrated. Therefore, the sectional force generated in the spar and the floor slab can be reduced, and the cross section of the spar and the floor slab can be made smaller, which is economical.
<3> When the floor slab is installed on the girders, the plate is projecting near the center of the girders and there are not many studs, etc., so the floor slabs can be installed easily and quickly at a predetermined position. It is possible. Furthermore, in the production of a concrete floor slab, the formwork shape does not become complicated, so that the production work of the floor slab becomes easy.

＜１＞接合構造
本発明の接合構造１は、桁２とその上面に設置した複数のコンクリート床版４，４との接合部の構造である。
桁２の上面には、かかる桁２の延伸方向に伸びるプレート３を予め備えておく。なお、プレート３には後述するように複数のプレート穴３１を設けておく。桁２上面にコンクリート床版４，４を設置し、桁２とコンクリート床版４，４の端面４１，４１から形成される空間５に充填材８を充填することによりかかる接続構造１を成形する。
ここで、接合構造１は大きく二つの実施形態を選定できる。その一つは上記するように複数のプレート穴３１を備えたプレート３を上面に設けた桁２を使用して接続構造１を成形する形態である。他の一つは、プレート穴３１を貫通させた後述する定着棒体７をコンクリート床版４内に備えた定着ナット６に螺挿して接続構造１を成形する形態である（図１参照）。ここで、プレート３の上下又はプレート３延伸方向に設けた複数のプレート穴３１，３１に複数の定着棒体７，７を千鳥配置で貫通方向を変えて貫通させ、対向するコンクリート床版４，４内に設けた複数のナット６１，６１に棒体７１，７１を螺挿させるのが好ましい。対向するコンクリート床版４，４から交互にかつ均等に定着用の定着棒体７，７を空間５内に張出すことで強固なコンクリート床版４，４同士の接合を実現できるからである。 <1> Joining structure The joining structure 1 of the present invention is a structure of a joint portion between a girder 2 and a plurality of concrete floor slabs 4 and 4 installed on the upper surface thereof.
On the upper surface of the beam 2, a plate 3 extending in the extending direction of the beam 2 is provided in advance. The plate 3 is provided with a plurality of plate holes 31 as will be described later. Concrete floor slabs 4 and 4 are installed on the upper surface of the girder 2 and the connecting structure 1 is formed by filling the space 5 formed from the end surfaces 41 and 41 of the girder 2 and the concrete floor slabs 4 and 4 with the filler 8. .
Here, the joining structure 1 can largely select two embodiments. One of them is a form in which the connection structure 1 is formed using the beam 2 provided on the upper surface with the plate 3 having a plurality of plate holes 31 as described above. The other one is a form in which the connecting structure 1 is formed by screwing a fixing rod 7 (described later) through the plate hole 31 into a fixing nut 6 provided in the concrete floor slab 4 (see FIG. 1). Here, a plurality of fixing rods 7 and 7 are passed through a plurality of plate holes 31 and 31 provided in the upper and lower direction of the plate 3 or in the extending direction of the plate 3 in a zigzag manner while changing the penetration direction. It is preferable to screw the rods 71, 71 into the plurality of nuts 61, 61 provided in 4. This is because by fixing the fixing rod bodies 7 and 7 for fixing alternately and evenly from the opposing concrete floor slabs 4 and 4 into the space 5, it is possible to realize a strong joint between the concrete floor slabs 4 and 4.

上記する実施形態のうち、前者を使用する場合は、スタッドジベルを使用するのと同様の効果、すなわち、コンクリート床版４の横ずれを防止することが可能となる。すなわち、プレート３に設けたプレート穴３１を充填材８が貫通した状態で硬化することにより、コンクリート床版４に作用した水平力は硬化した充填材８を介してプレート３に伝達され、さらにプレート３と接合している桁２に伝達されることとなる。   Among the embodiments described above, when the former is used, it is possible to prevent the same effect as that of using the stud dowel, that is, the lateral displacement of the concrete floor slab 4. That is, by hardening the plate hole 31 provided in the plate 3 with the filler 8 penetrating, the horizontal force acting on the concrete floor slab 4 is transmitted to the plate 3 through the hardened filler 8, and the plate 3 is transmitted to the beam 2 joined to the beam 3.

一方、上記実施形態のうち、後者を使用する場合は、コンクリート床版４の横ずれを防止することに加え、定着棒体７を空間５内にて定着させることによってコンクリート床版４，４同士を剛結合とすることが可能となる。したがって、本実施形態によればコンクリート床版４は桁２の延伸方向と直角方向に連続した床版を成形することとなり、コンクリート床版４の中央に生じる曲げモーメントも剛結合構造でない場合に比べて低減することができる。
また、桁２から突設したプレート３とプレート穴３１を貫通した定着棒体７とによって、桁２とコンクリート床版４との接合構造をも剛結合構造とすることができる。 On the other hand, when using the latter among the above embodiments, in addition to preventing the lateral displacement of the concrete floor slab 4, the concrete floor slabs 4, 4 are fixed together by fixing the fixing bar 7 in the space 5. It is possible to make a rigid connection. Therefore, according to the present embodiment, the concrete floor slab 4 forms a floor slab continuous in a direction perpendicular to the extending direction of the girder 2, and the bending moment generated at the center of the concrete floor slab 4 is also less than that in the case of not having a rigid connection structure. Can be reduced.
Further, the joining structure of the girder 2 and the concrete floor slab 4 can be made to be a rigid coupling structure by the plate 3 protruding from the girder 2 and the fixing rod 7 penetrating the plate hole 31.

また、上記する実施形態を複合した形態を使用することもできる。すなわち、プレート３の上下又はプレート３延伸方向に設けた複数のプレート穴３１，３１において、一つ又は複数のプレート穴３１ごとに定着棒体７を設置する構造である。かかる形態によれば、接合構造１として必要な接合力ごとに定着棒体７の設置数を調整することが可能となる。
Moreover, the form which combined above-mentioned embodiment can also be used. That is, in the plurality of plate holes 31, 31 provided in the upper and lower direction of the plate 3 or in the extending direction of the plate 3, the fixing rod body 7 is installed for each one or a plurality of plate holes 31. According to such a form, it is possible to adjust the number of fixing rods 7 installed for each joining force required for the joining structure 1.

＜２＞桁、プレート
桁２は鋼製の箱桁（図２参照）やＨ鋼桁などの鋼製桁２１を使用できる。また、コンクリート製のＩ型桁（図３参照）やＵ型桁を桁の延伸方向で緊張材にて連結させたプレストレストコンクリートあるいは鉄筋コンクリート構造の桁（コンクリート製桁２２）として使用できる。ここで、コンクリート製桁２２は、普通コンクリート材料のほか、繊維補強系の高強度コンクリート材料にて製作できる。 桁２の断面性能や材質の選定などは、設計荷重や施工性および経済性などを勘案して決定するのがよい。
なお、桁２は、工場にて予め製作することのほか、現場の製作ヤードにて製作することもできる。 <2> Girder, Plate Girder 2 can be a steel girder 21 such as a steel box girder (see FIG. 2) or a H steel girder. Moreover, it can be used as a prestressed concrete or a reinforced concrete structure girder (concrete girder 22) in which a concrete I-shaped girder (see FIG. 3) or a U-shaped girder is connected with a tension material in the girder extending direction. Here, the concrete girder 22 can be made of a high-strength concrete material of fiber reinforcement system in addition to a normal concrete material. The cross-sectional performance and material selection of the girder 2 should be determined in consideration of the design load, workability, economy, and the like.
Note that the girder 2 can be manufactured in advance at the factory, or can be manufactured at a production yard on site.

鋼製桁２１を使用する場合、桁の上面にはプレート穴３１を複数備えたプレート３を例えば溶接２４にて接合する（図２参照）。ここで、プレート３は桁２と複数の後述するコンクリート床版４，４の端面４１，４１とから形成される空間５に充填した充填材８がプレート穴３１を貫通して硬化することによりコンクリート床版４の横ずれを防止するための部材である。さらに、後述する定着棒体７をプレート穴３１に貫通させることでコンクリート床版４，４同士を剛結合構造とするための部材でもある。
プレート３は例えば鋼材にて製作することができる。 When the steel girder 21 is used, the plate 3 having a plurality of plate holes 31 is joined to the upper surface of the girder by, for example, welding 24 (see FIG. 2). Here, the plate 3 is formed by filling the space 8 formed by the girder 2 and end surfaces 41 and 41 of a plurality of later-described concrete floor slabs 4 and 4 through the plate holes 31 and hardening the concrete. It is a member for preventing the lateral displacement of the floor slab 4. Furthermore, it is also a member for making concrete floor slabs 4 and 4 have a rigid connection structure by letting the fixing rod body 7 mentioned later penetrate the plate hole 31.
The plate 3 can be made of steel, for example.

従来のように桁の上面にスタッドジベルを多数設ける構造と異なり、かかるプレート３は桁の上面の中央（または中央付近）に桁の延伸方向に突設しているため、コンクリート床版４の設置に際して障害となることもない。   Unlike the conventional structure in which a large number of stud gibels are provided on the top surface of the spar, the plate 3 is provided in the center (or near the center) of the top surface of the spar in the extension direction of the spar. There will be no obstacles.

コンクリート製桁２２を使用する場合は、プレート３の一部を桁内に埋め込んだ状態でコンクリート製桁２２を製作するのがよい（図３参照）。   When using the concrete girder 22, it is preferable to manufacture the concrete girder 22 with a part of the plate 3 embedded in the girder (see FIG. 3).

桁２の上面の端部付近には充填材８の漏洩を防止するためのシール材２３を桁の延伸方向に沿って設置するのが好ましい（図２、図３参照）。
In the vicinity of the end of the upper surface of the beam 2, it is preferable to install a sealing material 23 for preventing the filler 8 from leaking along the extending direction of the beam (see FIGS. 2 and 3).

＜３＞コンクリート床版
コンクリート床版４は、矩形断面を有した版として製作できるが、必要に応じて中空断面を備えて製作することもできる。また、鉄筋コンクリート製の床版として、あるいはプレストレスト構造の床版として製作することができる。なお、コンクリート床版４は、普通コンクリート材料のほか、繊維補強系の高強度コンクリート材料にて製作できる。 <3> Concrete floor slab The concrete floor slab 4 can be manufactured as a plate having a rectangular cross section, but can also be manufactured with a hollow cross section if necessary. It can also be manufactured as a slab floor slab or as a prestressed floor slab. In addition, the concrete floor slab 4 can be manufactured with a high-strength concrete material of a fiber reinforcement system in addition to a normal concrete material.

コンクリート床版４，４は桁２の上面にプレート３を挟むようにプレート３に間隔を置いて設置し、その後、充填材８の硬化によって接合構造１を成形する。よって、充填材８とコンクリート床版４との接合をより強固にするために、コンクリート床版４のうち、プレート３側の端面４１には凹部４２を設けて凹凸状に成形するのが好ましい（図５参照）。
The concrete floor slabs 4 and 4 are placed on the upper surface of the girders 2 so as to sandwich the plate 3 at intervals, and then the joining structure 1 is formed by curing the filler 8. Therefore, in order to further strengthen the bonding between the filler 8 and the concrete floor slab 4, it is preferable that the end face 41 on the plate 3 side of the concrete floor slab 4 is provided with a recess 42 and formed into an uneven shape ( (See FIG. 5).

＜４＞定着ナット、定着棒体
定着ナット６と定着棒体７は、コンクリート床版４，４同士の接合を剛結合構造とするための部材である。
定着ナット６はナット６１とナット６１の一端に設けた定着板６２とから構成される（図４参照）。ナット６１と定着板６２の接合は摩擦圧接６３や溶接などによりおこなうことができる。ここで、摩擦圧接６３とは、ナット６１と定着板６２を高速で回転させて押し付け、その時に発生する摩擦熱によって両者を接合することをいう。
定着ナット６は定着板６２がコンクリート床版４の内部に、ナット６１の一端が端面４１上又は端面４１からプレート３側に突設するようにコンクリート床版４内に設置する（図５参照）。ここで、ナット６１の突設量が長ければ、棒体７１の長さを短くすることができ、定着棒体７の取り付けが容易になる。
なお、かかる定着ナット６の埋め込み位置は、コンクリート床版４を桁２上に設置した際にプレート穴３１を貫通した定着棒体７がナット６１に螺挿できるような位置とする。 <4> Fixing Nut and Fixing Bar Body The fixing nut 6 and the fixing bar body 7 are members for making the joint between the concrete floor slabs 4 and 4 a rigid connection structure.
The fixing nut 6 includes a nut 61 and a fixing plate 62 provided at one end of the nut 61 (see FIG. 4). The nut 61 and the fixing plate 62 can be joined by friction welding 63 or welding. Here, the friction welding 63 means that the nut 61 and the fixing plate 62 are rotated and pressed at a high speed, and both are joined by frictional heat generated at that time.
The fixing nut 6 is installed in the concrete floor slab 4 such that the fixing plate 62 is provided inside the concrete floor slab 4 and one end of the nut 61 protrudes on the end surface 41 or from the end surface 41 toward the plate 3 (see FIG. 5). . Here, if the protruding amount of the nut 61 is long, the length of the rod 71 can be shortened, and the fixing rod 7 can be easily attached.
The fixing position of the fixing nut 6 is set such that the fixing bar 7 that penetrates the plate hole 31 can be screwed into the nut 61 when the concrete floor slab 4 is installed on the beam 2.

定着棒体７は棒体７１と棒体７１の一端に設けた定着プレート７２とから構成される（図６参照）。棒体７１と定着プレート７２の接合は摩擦圧接６３などによりおこなうことができる。また、棒体７１の他の一端は、ナット６１に螺挿可能にねじ切り加工を施しておく。
また、定着プレート７２の外径寸法はプレート穴３１の穴径よりも大きくなるように成形しておくのがよい。 The fixing rod 7 includes a rod 71 and a fixing plate 72 provided at one end of the rod 71 (see FIG. 6). The rod 71 and the fixing plate 72 can be joined by the friction welding 63 or the like. The other end of the rod 71 is threaded so that it can be screwed into the nut 61.
The outer diameter of the fixing plate 72 is preferably formed to be larger than the hole diameter of the plate hole 31.

桁２の上面にコンクリート床版４を設置した後、プレート穴３１に定着棒体７を貫通させ、棒体７１をナット６１に螺挿して設置する。なお、かかる棒体７１の設置に際しては、コンクリート床版４を設置する前に予め定着棒体７をプレート穴３１に貫通した状態で係止させておき、コンクリート床版４を設置後に棒体７１の螺挿をおこなうのがよい。
また、対向するコンクリート床版４，４のそれぞれに埋め込まれている定着ナット６，６にはプレート穴３１，３１を貫通した定着棒体７，７を交互に設置していくのがよい（図１参照）。 After the concrete floor slab 4 is installed on the upper surface of the beam 2, the fixing rod 7 is passed through the plate hole 31, and the rod 71 is screwed into the nut 61 and installed. When installing the bar 71, the fixing bar 7 is locked in advance in a state of passing through the plate hole 31 before the concrete floor slab 4 is installed, and the bar 71 is installed after the concrete floor 4 is installed. It is good to screw in.
Further, it is preferable that fixing rods 7 and 7 penetrating the plate holes 31 and 31 are alternately installed in the fixing nuts 6 and 6 embedded in the opposing concrete floor slabs 4 and 4, respectively (see FIG. 1).

定着ナット６は例えば鋼材にて製作することができる。また、定着棒体７については、定着プレート７２は鋼材にて製作でき、棒体７１は例えば異形鉄筋を使用することができる。
The fixing nut 6 can be made of steel, for example. As for the fixing rod 7, the fixing plate 72 can be made of steel, and the rod 71 can use, for example, a deformed bar.

＜５＞充填材
充填材料８は普通コンクリートや膨張性のコンクリートあるいは無収縮モルタルのほか、繊維補強セメント系混合材料を使用することができる。
かかる繊維補強セメント系混合材料としては、例えば、セメント、ポゾラン質微粉末と珪石の粉末、シリカフューム、粒径２．５ｍｍ以下の砂または珪砂、高性能減水剤に水を単位水量（出来上がりコンクリート容積１ｍ3当たり）として１７５〜１８０ｋｇ程度（水／セメントの比率が２０〜２２％程度）を加えた高強度セメント系マトリックスに、直径が０．１〜０．３ｍｍで、長さが８〜１６ｍｍ、引張り降伏応力度が２６００〜３２００Ｎ／ｍｍ２の超高強度の鋼繊維を容積で２％程度混入して得られる圧縮強度２００〜２２０ＭＰａ、曲げ強度４０〜４５ＭＰａ、付着強度１５〜９０ＭＰａ、透気係数２．５×１０-１８ｍ２、吸水率０．０５ｋｇ／ｍ3、塩分拡散係数０．０２×１０-１２ｍ２／ｓｅｃ、弾性係数５０〜５５ＧＰａの特性を備える材料を使用するのが好ましい。
<5> Filler Filler material 8 can be plain concrete, expandable concrete, non-shrink mortar, or fiber-reinforced cement-based mixed material.
Examples of such fiber-reinforced cement-based mixed materials include cement, pozzolanic fine powder and silica stone powder, silica fume, sand or silica sand having a particle size of 2.5 mm or less, high-performance water reducing agent, unit water volume (finished concrete volume 1 m) 175~180kg about a 3 per) (high strength cement matrix the ratio of water / cement plus about 20-22%), with 0.1~0.3mm in diameter and length 8～16Mm, tensile yield stress of compressive strength 200~220MPa obtained by mixing about 2% by volume of steel fibers of ultra-high strength 2600~3200N / mm 2, bending strength 40～45MPa, adhesion strength 15～90MPa, permeability coefficient 2 .5 × 10 -18 m 2, water absorption 0.05 kg / m 3, salinity diffusion coefficient 0.02 × 10 -12 m 2 / sec , the elastic modulus 50-55 Preferably used materials with the characteristics of Pa.

＜６＞力の伝達メカニズム（１）
本発明の接合構造１をプレート３と定着棒体７及び充填材８として繊維補強セメント系混合材料にて構成した場合、繊維補強セメント系混合材料のせん断抵抗により桁２に生じたせん断力９１は充填材８（例えば、繊維補強セメント系混合材料）に伝達される。次に、充填材８のせん断力は定着棒体７のダボ効果と端面４１に設けた凹凸状による抵抗９３によってコンクリート床版４に伝達される（図８参照）。
ここで、定着棒体７のダボ効果とは、定着棒体７のダウエル力９２のことであり、定着棒体７が有する軸方向と直交する方向の抵抗力のことである。
<6> Force transmission mechanism (1)
When the joining structure 1 of the present invention is made of a fiber reinforced cementitious mixed material as the plate 3, the fixing rod 7 and the filler 8, the shearing force 91 generated in the beam 2 due to the shear resistance of the fiber reinforced cementitious mixed material is It is transmitted to the filler 8 (for example, fiber reinforced cementitious mixed material). Next, the shearing force of the filler 8 is transmitted to the concrete floor slab 4 by the dowel effect of the fixing rod 7 and the resistance 93 due to the unevenness provided on the end face 41 (see FIG. 8).
Here, the dowel effect of the fixing rod body 7 is a dowel force 92 of the fixing rod body 7 and a resistance force in a direction perpendicular to the axial direction of the fixing rod body 7.

＜７＞力の伝達メカニズム（２）
桁２に生じたせん断力９１を充填材８に伝達するメカニズムは以下のように考えられる（図９参照）。
プレート３からのせん断力９１は、プレート穴３１の肉厚の部分から充填材８に対して支圧力９３として作用する。その力は充填材８の全域に広がるが、その際に充填材８には二面せん断が作用するような形の応力分布ができ、支圧力９３が働く近傍においては外側に引っ張られるような割裂引張応力９４が働く。これに対して、本発明ではプレート穴３１に棒体７１が割裂引張応力９４に対して引張抵抗できるので補強効果を発揮する。さらに棒体７１には定着プレート７２がついているので、これが棒体７１の定着効果を与えるとともに、充填材８の割裂引張応力９４に対して支圧抵抗９６をすることになり充填材８は二面せん断抵抗力を増大することができる。 <7> Force transmission mechanism (2)
The mechanism for transmitting the shearing force 91 generated in the beam 2 to the filler 8 is considered as follows (see FIG. 9).
The shearing force 91 from the plate 3 acts as a support pressure 93 on the filler 8 from the thick part of the plate hole 31. The force spreads over the entire area of the filler 8, but at that time, the filler 8 has a stress distribution in such a manner that two-plane shearing acts, and in the vicinity where the supporting pressure 93 acts, the split is pulled outward. The tensile stress 94 works. On the other hand, in the present invention, since the rod 71 can resist the split tensile stress 94 in the plate hole 31, a reinforcing effect is exhibited. Further, since the fixing member 72 is attached to the rod 71, this gives the fixing effect of the rod 71 and also provides a bearing resistance 96 against the split tensile stress 94 of the filler 8. The surface shear resistance can be increased.

上記する接合構造１によって、例えば桁２の軸方向に発生する曲げモーメント対して桁２とコンクリート床版４が合成構造として機能できる。したがって、従来のような桁に床版を単純支持する構造に比べて桁及び床版の断面寸法を低減することが可能となる。   With the above-described joint structure 1, for example, the beam 2 and the concrete floor slab 4 can function as a composite structure with respect to a bending moment generated in the axial direction of the beam 2. Therefore, it is possible to reduce the cross-sectional dimensions of the spar and the floor slab as compared with the conventional structure in which the floor slab is simply supported by the girder.

また、一端に定着プレート７２が設置された定着棒体７を介すことにより、コンクリート床版４のうち桁２の延伸方向と直交する方向に生じる曲げモーメントを効率的に伝達することができる（図１０参照）。すなわち、発生曲げモーメント９４に対して充填材８内とコンクリート床版４内に交互に支圧による圧縮ゾーン９７を構成することにより、力の伝達がスムーズとなる。
Further, the bending moment generated in the direction perpendicular to the extending direction of the girder 2 in the concrete floor slab 4 can be efficiently transmitted through the fixing bar 7 having the fixing plate 72 installed at one end ( (See FIG. 10). That is, by forming the compression zone 97 by the bearing pressure alternately in the filler 8 and the concrete slab 4 with respect to the generated bending moment 94, the force transmission becomes smooth.

＜８＞桁と床版の接合方法
本発明の桁と床版の接合方法の一実施例を説明する。
まず、桁２の上面に設けたプレート３のプレート穴３１に定着棒体７を貫通させた状態で係止させておく。
次に桁２の上面にプレート３を挟むようにコンクリート床版４，４をそれぞれの端面４１，４１とプレート３に間隔を置いて設置する。
複数のプレート穴３１，３１に係止させた定着棒体７，７をコンクリート床版４，４内に設けた定着ナット６，６に螺挿する。
桁２とコンクリート床版４，４の端面４１，４１とから形成させる空間５に充填材８を充填し（図７参照）、充填材８の硬化をまって接合構造１を構築する。
<8> Joining Method of Girder and Floor Slab An embodiment of the joining method of the girder and floor slab of the present invention will be described.
First, the fixing rod body 7 is locked in a state of passing through the plate hole 31 of the plate 3 provided on the upper surface of the beam 2.
Next, the concrete floor slabs 4 and 4 are installed at intervals between the end surfaces 41 and 41 and the plate 3 so that the plate 3 is sandwiched between the upper surfaces of the girders 2.
Fixing rod bodies 7, 7 engaged with the plurality of plate holes 31, 31 are screwed into fixing nuts 6, 6 provided in the concrete floor slabs 4, 4.
The space 8 formed by the girder 2 and the end surfaces 41 and 41 of the concrete slabs 4 and 4 is filled with the filler 8 (see FIG. 7), and the filler 8 is cured to construct the joint structure 1.

本発明の桁と床版の接合構造を示した斜視図。The perspective view which showed the joining structure of the girder and floor slab of this invention. 桁に鋼製桁を使用した実施例を示した斜視図。The perspective view which showed the Example which used the steel girder for the girder. 桁にコンクリート製桁を使用した実施例を示した斜視図。The perspective view which showed the Example which used the concrete-made girder for the girder. 定着ナットを示した斜視図。The perspective view which showed the fixing nut. 定着ナットを備えたコンクリート床版を示した斜視図。The perspective view which showed the concrete floor slab provided with the fixing nut. 定着棒体を示した斜視図。The perspective view which showed the fixing rod body. 充填材を充填している状況を説明した説明図。Explanatory drawing explaining the condition filled with the filler. 床版と桁に作用するせん断力とせん断抵抗力を説明した斜視図。The perspective view explaining the shear force and shear resistance force which act on a floor slab and a girder. せん断力の伝達メカニズムを説明した説明図。Explanatory drawing explaining the transmission mechanism of shear force. 床版に曲げモーメントが作用した場合に桁と床版の接合構造に生じる支圧ゾーンを説明した説明図。Explanatory drawing explaining the bearing zone which arises in the junction structure of a girder and a floor slab when a bending moment acts on a floor slab. 従来の鋼合成複合構造を示した斜視図。The perspective view which showed the conventional steel synthetic composite structure.

符号の説明Explanation of symbols

１・・・接合構造
２・・・桁
２１・・上面
３・・・プレート
３１・・プレート穴
４・・・コンクリート床版
４１・・端面
５・・・空間
６・・・定着ナット
６１・・ナット
６２・・定着板
７・・・定着棒体
７１・・棒体
７２・・定着プレート
８・・・充填材 DESCRIPTION OF SYMBOLS 1 ... Joining structure 2 ... Girder 21 ... Upper surface 3 ... Plate 31 ... Plate hole 4 ... Concrete floor slab 41 ... End surface 5 ... Space 6 ... Fixing nut 61 ... Nut 62 ··· Fixing plate 7 ··· Fixing rod 71 ··· Rod 72 ··· Fixing plate 8 ··· Filler

Claims (4)

桁と、
前記桁の上面に突設した該桁の延伸方向に伸びるプレートと、
前記桁の上面に前記プレートを挟むように設置した複数のコンクリート床版と、からなり、
前記プレートは該プレート表面に複数のプレート穴を設けてなり、
前記桁と複数の前記コンクリート床版の端面とから形成される空間に充填した充填材によって前記桁と複数の前記コンクリート床版を一体化したことを特徴とする、
桁と床版の接合構造。
Digits and
A plate extending in the extending direction of the beam protruding from the upper surface of the beam;
A plurality of concrete floor slabs installed so as to sandwich the plate on the upper surface of the girder,
The plate is provided with a plurality of plate holes on the plate surface,
The girder and the plurality of concrete floor slabs are integrated by a filler filled in a space formed by the girders and end surfaces of the plurality of concrete floor slabs,
Girder and floor slab joint structure.
請求項１記載の桁と床版の接合構造において、
ナットと該ナットの一端に設けた定着板とからなる定着ナットを、該ナットの他の一端を前記プレート側に配置して前記コンクリート床版内に複数設けて前記コンクリート床版を構成し、
棒体と該棒体の一端に設けた定着プレートとからなる定着棒体において該棒体の他の一端を前記プレート穴に貫通させて前記ナットに螺挿させたことを特徴とする、
桁と床版の接合構造。
In the joining structure of the girder and floor slab according to claim 1,
A fixing nut composed of a nut and a fixing plate provided at one end of the nut, the other end of the nut is disposed on the plate side, and a plurality of the fixing floors are provided in the concrete floor slab to constitute the concrete floor slab,
In the fixing rod body comprising a rod body and a fixing plate provided at one end of the rod body, the other end of the rod body is passed through the plate hole and screwed into the nut.
Girder and floor slab joint structure.
請求項２記載の桁と床版の接合構造において、
前記プレートの上下又はプレート延伸方向に設けた複数の前記プレート穴に複数の前記定着棒体を千鳥配置で貫通方向を変えて貫通させ、対向する前記コンクリート床版内に設けた複数の前記ナットに前記棒体を螺挿させたことを特徴とする、
桁と床版の接合構造。
In the joining structure of the girder and floor slab according to claim 2,
A plurality of fixing rods are passed through a plurality of the plate holes provided in the upper and lower directions of the plate or in a plate extending direction while changing the penetration direction in a staggered arrangement, and a plurality of the nuts provided in the opposing concrete floor slabs The rod body is screwed,
Girder and floor slab joint structure.
請求項２又は３記載の桁と床版の接合構造を構築する桁と床版の接合方法であって、
前記桁の上面に前記プレートを挟むように前記コンクリート床版を該コンクリート床版の端面と前記プレートに間隔を置いて設置し、
前記プレート穴を貫通した前記定着棒体を前記ナットに螺挿し、
前記桁と複数の前記コンクリート床版の端面とから形成される空間に前記充填材を充填することを特徴とする、
桁と床版の接合方法。
A girder and floor slab joining method for constructing a girder and floor slab joint structure according to claim 2 or 3,
The concrete floor slab is placed with an interval between the end surface of the concrete floor slab and the plate so as to sandwich the plate on the upper surface of the girder,
Screwing the fixing rod through the plate hole into the nut;
The filler is filled in a space formed by the girders and a plurality of end faces of the concrete floor slabs,
Girder and floor slab joining method.
JP2003270164A 2003-07-01 2003-07-01 Girder and floor slab joining structure and girder and floor slab joining method Expired - Fee Related JP4390494B2 (en)

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KR101283542B1 (en) * 2011-06-21 2013-07-15 주식회사 장헌산업 Constructing Method of Bridge using Half Precast Panel having Connecting Bar
KR20150068787A (en) * 2013-12-12 2015-06-22 한국건설기술연구원 Method for precast slab segment connection adjustment and sheath connection and bridge construction method therewith
KR20150068785A (en) * 2013-12-12 2015-06-22 한국건설기술연구원 Slab gap adjustment apparatus with longitudinal moving and bridge construction method therewith
JP2018053441A (en) * 2016-09-26 2018-04-05 清水建設株式会社 Precast concrete floor slab provided with loop-like joint
JP2019002164A (en) * 2017-06-13 2019-01-10 株式会社Ｉｈｉインフラシステム Precast floor slab joint structure
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JP2007032212A (en) * 2005-07-29 2007-02-08 Taisei Corp Ribbed floor slab and on-water structure
JP2010047962A (en) * 2008-08-21 2010-03-04 Sumitomo Mitsui Construction Co Ltd Construction method for pc bridge
JP2011179261A (en) * 2010-03-02 2011-09-15 Jfe Engineering Corp Steel box girder, joint structure of steel box girder and concrete floor slab, concrete floor slab, girder bridge, and bridge
KR100989153B1 (en) 2010-04-07 2010-10-22 주식회사 오케이컨설턴트 Psc girder connection structure with strength connector detail for substitution of rebar placement in deck and bridge construction method using the same
KR101044469B1 (en) 2010-09-06 2011-06-29 주식회사 오케이컨설턴트 Combined projection beam and prestressed concrete girder
KR101200564B1 (en) 2010-10-08 2012-11-13 한국건설기술연구원 Composite slab using corrugated and connecting plate, and making method therewith
JP2012197643A (en) * 2011-03-23 2012-10-18 Daiwa House Industry Co Ltd Steel pipe combined holed steel plate dowel
KR101283542B1 (en) * 2011-06-21 2013-07-15 주식회사 장헌산업 Constructing Method of Bridge using Half Precast Panel having Connecting Bar
KR20150068787A (en) * 2013-12-12 2015-06-22 한국건설기술연구원 Method for precast slab segment connection adjustment and sheath connection and bridge construction method therewith
KR20150068785A (en) * 2013-12-12 2015-06-22 한국건설기술연구원 Slab gap adjustment apparatus with longitudinal moving and bridge construction method therewith
KR101582602B1 (en) * 2013-12-12 2016-01-06 한국건설기술연구원 Method for precast slab segment connection adjustment and sheath connection and bridge construction method therewith
KR101582611B1 (en) * 2013-12-12 2016-01-19 한국건설기술연구원 Slab gap adjustment apparatus with longitudinal moving and bridge construction method therewith
JP2018053441A (en) * 2016-09-26 2018-04-05 清水建設株式会社 Precast concrete floor slab provided with loop-like joint
JP2019002164A (en) * 2017-06-13 2019-01-10 株式会社Ｉｈｉインフラシステム Precast floor slab joint structure
KR102339400B1 (en) * 2020-12-07 2021-12-15 한밭대학교 산학협력단 Combined structure for slab and girder
KR102294962B1 (en) * 2021-02-26 2021-08-30 주식회사 지구코퍼레이션 Sectionally devided precast culvert box and the construction method thereof
KR102364207B1 (en) * 2021-02-26 2022-02-17 김성배 Precast culverts and the construction method thereof

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