JP2019044444A - Connection structure and connection method - Google Patents

Connection structure and connection method Download PDF

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JP2019044444A
JP2019044444A JP2017167777A JP2017167777A JP2019044444A JP 2019044444 A JP2019044444 A JP 2019044444A JP 2017167777 A JP2017167777 A JP 2017167777A JP 2017167777 A JP2017167777 A JP 2017167777A JP 2019044444 A JP2019044444 A JP 2019044444A
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face
precast floor
floor slab
side plate
reinforcing bar
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JP6932049B2 (en
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崇裕 新井
Takahiro Arai
崇裕 新井
康祐 横関
Kosuke Yokozeki
康祐 横関
一正 大窪
Kazumasa Okubo
一正 大窪
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Kajima Corp
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Kajima Corp
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Abstract

To provide a precast floor slab connection structure and connection method which allow quick construction and maintain durability.SOLUTION: A connection structure relating to one embodiment is a connection structure 1 in which a first precast floor slab 10 and a second precast floor slab 20 are connected via a connection member 30. A first end face 11b of the first precast floor slab 10 and a second end face 21b of the second precast floor slab 20 are both inclined in a mutually protruding direction vertically downward. The connection member 30 comprises: a pair of side plate parts 31 facing the first end face 11b and the second end face 21b and provided with holes 31c through which a first reinforcing bar 12 and a second reinforcing bar 22 pass respectively; and an upper plate part 32 provided so as to connect the top edges of the pair of side plate parts 31 and to connect a top face 11a of the first precast floor slab 10 and a top face 21a of the second precast floor slab 20.SELECTED DRAWING: Figure 1

Description

本発明は、プレキャスト床版を連結する連結構造、及び連結方法に関する。   The present invention relates to a connection structure for connecting precast floor slabs, and a connection method.

従来から、プレキャスト床版を連結する連結構造及び連結方法については種々のものが知られている。特許文献１には、プレキャスト床版の架設方法が記載されている。この架設方法では、橋軸方向に互いに隣り合うループ状継手付きの２体のプレキャスト床版を連結する。   Conventionally, various connection structures and connection methods for connecting precast floor slabs are known. Patent Document 1 describes a method of constructing a precast floor slab. In this construction method, two precast floor slabs with loop joints adjacent to each other in the bridge axial direction are connected.

２体のプレキャスト床版の間には、各プレキャスト床版から突出するループ状継手と、橋軸直角方向に延びる複数の補強鉄筋とが配置される。更に、２体のプレキャスト床版の間にコンクリートからなる硬化性材料が打設されることによって２体のプレキャスト床版が一体化する。   Between the two precast floor slabs, a loop joint projecting from each precast floor slab and a plurality of reinforcing bars extending in a direction perpendicular to the bridge axis are arranged. Furthermore, by placing a hardenable material consisting of concrete between the two precast floor slabs, the two precast floor slabs are integrated.

特許第５３３７１２２号公報Patent No. 5337122 gazette

プレキャスト床版の連結作業は、速やかに行うことが求められる場合がある。しかしながら、前述したように、２体のプレキャスト床版の間にループ状継手と補強鉄筋を配置し、更に、硬化性材料等の充填材を打設して硬化を待たなければならないため、プレキャスト床版の施工を速やかに行えないという現状がある。   It may be required to carry out precast deck slab consolidation quickly. However, as described above, since the loop joint and reinforcing bar are placed between the two precast floor slabs, and further, a filler such as a hardenable material must be cast to wait for curing, so the precast floor There is a present condition that construction of a plate can not be done promptly.

また、打設される充填材として、例えば３時間程度で硬化するジェットコンクリートを用いる場合には、連結作業を速やかに行うことが可能となる。しかしながら、ジェットコンクリートは、収縮しやすく且つ事後的にひび割れが生じる可能性があり、ひび割れから劣化因子が侵入しやすいという問題がある。よって、充填材としてジェットコンクリートを用いた場合には、品質の低下が懸念されると共に、耐久性の維持の点で改善の余地がある。   Further, in the case of using jet concrete which hardens in, for example, about 3 hours as the filler to be casted, it is possible to carry out the connection operation promptly. However, jet concrete has a problem that it is easy to shrink and cracks may occur afterward, and deterioration factors are likely to infiltrate from the cracks. Therefore, when jet concrete is used as the filler, there is a concern that the quality may deteriorate, and there is room for improvement in terms of maintenance of durability.

本発明は、施工を速やかに行うことができると共に、耐久性を維持することができるプレキャスト床版の連結構造及び連結方法を提供することを目的とする。   An object of the present invention is to provide a connection structure and a connection method of precast floor slabs capable of performing construction quickly and maintaining durability.

本発明に係る連結構造は、第１プレキャスト床版と第２プレキャスト床版とを連結部材を介して連結する連結構造であって、第１プレキャスト床版は、第２プレキャスト床版に対向する第１端面を有する第１プレキャストブロックと、第１プレキャストブロックに埋め込まれると共に第１端面から突出する第１鉄筋と、を備え、第２プレキャスト床版は、第１端面に対向する第２端面を有する第２プレキャストブロックと、第２プレキャストブロックに埋め込まれると共に第２端面から突出する第２鉄筋と、を備え、第１端面及び第２端面は、共に、鉛直下方に向かうに従って互いに突出する方向に傾斜しており、連結部材は、第１端面及び第２端面のそれぞれに対向すると共に、第１鉄筋及び第２鉄筋のそれぞれが通される孔部を備えた一対の側板部と、一対の側板部の上端同士を連結すると共に、第１プレキャスト床版の上面、及び第２プレキャスト床版の上面と連続するように設けられる上板部と、を有する。   The connection structure according to the present invention is a connection structure in which a first precast floor slab and a second precast floor slab are connected via a connecting member, and the first precast floor slab is a first facing the second precast floor slab. A first precast block having one end face, and a first reinforcing bar embedded in the first precast block and protruding from the first end face, the second precast floor slab having a second end face opposite to the first end face A second precast block and a second reinforcing bar embedded in the second precast block and projecting from the second end face, the first end face and the second end face both being inclined in the direction in which they project toward each other as they go vertically downward The connecting member is provided with a hole that faces each of the first end face and the second end face and through which each of the first reinforcing bar and the second reinforcing bar passes. It has a side plate portion, the connecting upper ends of the pair of side plate portions, the first precast slab of the upper surface, and an upper plate portion provided so as to be continuous with the upper surface of the second precast slab, the.

前述した連結構造では、第１プレキャスト床版の第１端面と、第２プレキャスト床版の第２端面は、共に、鉛直下方に向かうに従って互いに突出する方向に傾斜している。すなわち、第１端面及び第２端面は、鉛直下方に向かうにつれて突出するように傾斜している。連結部材は、第１鉄筋及び第２鉄筋を通すと共に第１端面及び第２端面のそれぞれに対向する一対の側板部と、一対の側板部の上端同士を連結する上板部とを備える。第１端面、第２端面、及び一対の側板部は、共に、鉛直下方に向かうに従って互いに突出する方向に傾斜するので、連結部材を上から挿入するときに、各側板部を第１端面及び第２端面のそれぞれに接近させることができる。よって、連結部材の挿入を容易に行うことができると共に、連結部材と第１端面の間の隙間、及び連結部材と第２端面の間の隙間を小さくすることができる。従って、連結作業の施工を速やかに行うことができる。また、連結部材に鉛直上方から力がかかっても、傾斜する一対の側板部によって当該力に抵抗することができる。すなわち、傾斜する一対の側板部によって第１プレキャスト床版、第２プレキャスト床版及び連結部材のせん断抵抗を高めることができる。従って、第１プレキャスト床版、第２プレキャスト床版及び連結部材の耐久性を維持することができる。   In the connection structure described above, the first end face of the first precast floor slab and the second end face of the second precast floor slab are both inclined in the direction in which they project in the downward vertical direction. That is, the first end surface and the second end surface are inclined so as to protrude as they go vertically downward. The connecting member includes a pair of side plate portions passing the first reinforcing bar and the second reinforcing bar and facing the first end surface and the second end surface, and an upper plate portion connecting upper ends of the pair of side plate portions. Since the first end face, the second end face, and the pair of side plate portions are both inclined in the direction of projecting toward each other as they go vertically downward, when inserting the connecting member from above, each side plate portion becomes the first end face and the first side It can be made to approach each of 2 end faces. Therefore, while being able to perform insertion of a connection member easily, the clearance gap between a connection member and a 1st end surface and the clearance gap between a connection member and a 2nd end surface can be made small. Therefore, construction of connection work can be performed promptly. Further, even if a force is applied to the connecting member from above vertically, the force can be resisted by the pair of inclined side plate portions. That is, the shear resistance of the first precast floor slab, the second precast floor slab, and the connecting member can be increased by the pair of inclined side plate portions. Therefore, the durability of the first precast floor slab, the second precast floor slab and the connecting member can be maintained.

また、前述の連結構造は、一対の側板部と上板部とによって囲まれた領域に充填される充填材を備えてもよい。この場合、一対の側板部と上板部との間に充填材が打設されるため、第１プレキャスト床版、第２プレキャスト床版及び連結部材の耐久性を高めることができると共に、連結構造の構造的な一体性を高めることができる。   Moreover, the above-mentioned connection structure may be provided with the filler with which the area | region enclosed by a pair of side plate part and a top plate part is filled. In this case, since the filler is cast between the pair of side plate portions and the upper plate portion, the durability of the first precast floor plate, the second precast floor plate, and the connecting member can be enhanced, and the connecting structure Can enhance the structural integrity of the

また、前述した連結構造は、一対の側板部のそれぞれにおいて、第１鉄筋及び第２鉄筋のそれぞれを締め付ける締め付け部材を備えてもよい。この場合、第１鉄筋及び第２鉄筋が締め付け部材によって一対の側板部のそれぞれに締め付けられるので、第１プレキャスト床版、第２プレキャスト床版及び連結部材を一層強固に連結することができる。   Moreover, the connection structure mentioned above may be provided with the clamping member which clamps each of a 1st rebar and a 2nd rebar in each of a pair of side plate parts. In this case, since the first reinforcing bar and the second reinforcing bar are fastened to each of the pair of side plate portions by the fastening members, the first precast floor slab, the second precast floor slab, and the connecting member can be connected more firmly.

また、前述した連結構造は、側板部と第１端面との間の隙間、及び側板部と第２端面との間の隙間に埋め込まれる埋め込み部材を備えてもよい。この場合、第１プレキャスト床版、第２プレキャスト床版及び連結部材の構造的な一体性を更に高めることができる。   In addition, the connection structure described above may include an embedding member embedded in the gap between the side plate portion and the first end surface, and the gap between the side plate portion and the second end surface. In this case, the structural integrity of the first precast floor slab, the second precast floor slab, and the connecting member can be further enhanced.

また、前述した連結構造は、上板部の下面、及び各側板部の内面から突出するリブを備えてもよい。この場合、上板部、及び一対の側板部のそれぞれから延びるリブにより、連結部材を補強することができる。従って、連結部材の強度を高めることができるので、連結部材による連結を更に強固にすることができる。   Moreover, the connection structure mentioned above may be provided with the rib which protrudes from the lower surface of an upper board part, and the inner surface of each side-plate part. In this case, the connecting member can be reinforced by the ribs extending from the upper plate portion and the pair of side plate portions. Therefore, since the strength of the connecting member can be increased, the connection by the connecting member can be further strengthened.

本発明に係る連結方法は、第１プレキャスト床版と第２プレキャスト床版とを連結部材を介して連結する連結方法であって、第１プレキャスト床版は、第２プレキャスト床版に対向する第１端面を有する第１プレキャストブロックと、第１プレキャストブロックに埋め込まれると共に第１端面から突出する第１鉄筋と、を備え、第２プレキャスト床版は、第１端面に対向する第２端面を有する第２プレキャストブロックと、第２プレキャストブロックに埋め込まれると共に第２端面から突出する第２鉄筋と、を備え、第１端面及び第２端面が共に鉛直下方に向かうに従って互いに突出する方向に傾斜するように第１プレキャスト床版及び第２プレキャスト床版を配置する工程と、連結部材の一対の側板部のそれぞれを第１端面及び第２端面のそれぞれに対向させると共に第１鉄筋及び第２鉄筋のそれぞれを側板部の孔部に通し、連結部材の上板部が第１プレキャスト床版の上面及び第２プレキャスト床版の上面と連続するように、連結部材を配置する工程と、を備える。   The connection method according to the present invention is a connection method in which a first precast floor slab and a second precast floor slab are connected via a connecting member, and the first precast floor slab is a first facing the second precast floor slab. A first precast block having one end face, and a first reinforcing bar embedded in the first precast block and protruding from the first end face, the second precast floor slab having a second end face opposite to the first end face A second precast block and a second reinforcing bar embedded in the second precast block and protruding from the second end face, and both the first end face and the second end face are inclined in the direction in which they project toward each other downward in the vertical direction Arranging the first precast floor slab and the second precast floor slab in the first and second end faces of the pair of side plate portions of the connecting member Make each of them face each other and pass each of the first reinforcing bar and the second reinforcing bar through the hole of the side plate, and the upper plate of the connecting member is continuous with the upper surface of the first precast floor slab and the upper surface of the second precast floor slab And disposing the connecting member.

前述した連結方法では、第１プレキャスト床版の第１端面と、第２プレキャスト床版の第２端面は、共に、鉛直下方に向かうに従って互いに突出する方向に傾斜する。連結部材は、第１鉄筋及び第２鉄筋を通すと共に第１端面及び第２端面のそれぞれに対向する一対の側板部を備えており、一対の側板部、第１端面及び第２端面は、共に、鉛直下方に向かうに従って互いに突出する方向に傾斜する。よって、連結部材を上から挿入するときに、各側板部を第１端面及び第２端面のそれぞれに接近させることができる。従って、連結部材の挿入を容易に行うことができると共に、連結部材と第１端面の間の隙間、及び連結部材と第２端面の間の隙間を小さくすることができる。その結果、前述した連結構造と同様、施工を速やかに行うことができると共に耐久性を維持することができる。   In the connection method described above, the first end face of the first precast floor slab and the second end face of the second precast floor slab are both inclined in the direction in which they project to each other as they go vertically downward. The connecting member is provided with a pair of side plate portions for passing the first reinforcing bar and the second reinforcing bar and facing each of the first end surface and the second end surface, and the pair of side plate portions, the first end surface and the second end surface And incline in the direction in which they project to each other as they go vertically downward. Therefore, when inserting a connection member from the top, each side plate part can be made to approach each of the 1st end face and the 2nd end face. Therefore, while being able to perform insertion of a connection member easily, the clearance gap between a connection member and a 1st end surface and the clearance gap between a connection member and a 2nd end surface can be made small. As a result, as in the case of the connection structure described above, construction can be performed quickly and durability can be maintained.

また、前述した連結方法は、一対の側板部と上板部とによって囲まれた領域に充填材を充填する工程を備えてもよい。この場合、一対の側板部と上板部との間に充填材を打設することにより、第１プレキャスト床版、第２プレキャスト床版及び連結部材の耐久性を高めることができる。よって、第１プレキャスト床版、第２プレキャスト床版及び連結部材を備えた連結構造の構造的な一体性を高めることができる。   In addition, the connection method described above may include the step of filling the region surrounded by the pair of side plate portions and the upper plate portion with the filler. In this case, the durability of the first precast floor slab, the second precast floor slab, and the connecting member can be enhanced by placing a filler between the pair of side plate portions and the upper plate portion. Thus, the structural integrity of the connection structure including the first precast floor slab, the second precast floor slab, and the connection member can be enhanced.

また、前述した連結方法は、一対の側板部のそれぞれにおいて、第１鉄筋及び第２鉄筋のそれぞれを締め付け部材によって締め付ける工程を備えてもよい。この場合、一対の側板部のそれぞれにおいて締め付け部材で第１鉄筋及び第２鉄筋を締め付けるので、第１プレキャスト床版、第２プレキャスト床版及び連結部材を一層強固に連結することができる。   Moreover, the connection method mentioned above may comprise the process of clamp | tightening each of a 1st rebar and a 2nd rebar by a clamping member in each of a pair of side plate parts. In this case, since the first reinforcing bar and the second reinforcing bar are tightened by the tightening members in each of the pair of side plate portions, the first precast floor slab, the second precast floor slab, and the connecting member can be connected more firmly.

また、前述した連結方法は、側板部と第１端面との間の隙間、及び側板部と第２端面との間の隙間に埋め込み部材を埋め込む工程を備えてもよい。この場合、第１プレキャスト床版、第２プレキャスト床版及び連結部材の構造的な一体性を更に高めることができる。   Further, the connection method described above may include the step of embedding the embedding member in the gap between the side plate portion and the first end surface and the gap between the side plate portion and the second end surface. In this case, the structural integrity of the first precast floor slab, the second precast floor slab, and the connecting member can be further enhanced.

本発明によれば、施工を速やかに行うことができると共に、耐久性を維持することができる。   ADVANTAGE OF THE INVENTION According to this invention, while being able to perform construction rapidly, durability can be maintained.

第１実施形態に係る連結構造を示す断面図である。It is sectional drawing which shows the connection structure which concerns on 1st Embodiment. 図１の連結構造を示す平面図である。It is a top view which shows the connection structure of FIG. 図１の連結構造を示す断面図である。It is sectional drawing which shows the connection structure of FIG. 図１の連結構造の連結部材を示す斜視図である。It is a perspective view which shows the connection member of the connection structure of FIG. 第１実施形態に係る連結方法を示す断面図である。It is sectional drawing which shows the connection method which concerns on 1st Embodiment. 図５の連結方法の続きを示す断面図である。It is sectional drawing which shows the continuation of the connection method of FIG. 埋め込み部材の一例を示す図である。It is a figure showing an example of an embedding member. 図６の連結方法の続きを示す断面図である。It is sectional drawing which shows the continuation of the connection method of FIG. 第２実施形態に係る連結方法を示す断面図である。It is sectional drawing which shows the connection method which concerns on 2nd Embodiment. （ａ）及び（ｂ）は、第３実施形態に係る連結構造を示す断面図である。(A) And (b) is sectional drawing which shows the connection structure which concerns on 3rd Embodiment.

以下では、図面を参照しながら本発明に係るプレキャスト床版の連結構造及び連結方法の実施形態について説明する。図面の説明において、同一又は相当する要素には同一の符号を付し、重複する説明を適宜省略する。また、図面は、理解を容易にするため一部を誇張して描いており、寸法比率及び角度等は図面に記載のものに限定されない。   Hereinafter, an embodiment of a connection structure and a connection method of a precast floor slab according to the present invention will be described with reference to the drawings. In the description of the drawings, the same or corresponding elements will be denoted by the same reference symbols, and overlapping descriptions will be omitted as appropriate. The drawings are drawn with exaggeration in part for ease of understanding, and dimensional ratios, angles, etc. are not limited to those described in the drawings.

（第１実施形態）
図１は、第１プレキャスト床版１０と第２プレキャスト床版２０とが連結された連結構造１を示す断面図である。図２は、連結構造１を示す平面図である。第１プレキャスト床版１０及び第２プレキャスト床版２０は共にコンクリート製である。連結構造１は、第１プレキャスト床版１０と第２プレキャスト床版２０とを連結部材３０を介して連結する構造である。 First Embodiment
FIG. 1 is a cross-sectional view showing a connection structure 1 in which a first precast floor slab 10 and a second precast floor slab 20 are connected. FIG. 2 is a plan view showing the connection structure 1. The first precast floor slab 10 and the second precast floor slab 20 are both made of concrete. The connecting structure 1 is a structure in which the first precast floor slab 10 and the second precast floor slab 20 are connected via the connecting member 30.

例えば、第１プレキャスト床版１０及び第２プレキャスト床版２０は、高速道路の道路橋を成すプレキャスト床版である。高速道路において、複数のプレキャスト床版は、橋軸方向Ｄ１に沿って配置されており、複数のプレキャスト床版のうち一部のプレキャスト床版を第１プレキャスト床版１０及び第２プレキャスト床版２０としている。第１プレキャスト床版１０の形状及び大きさは、第２プレキャスト床版２０の形状及び大きさと同一であってもよいし異なっていてもよい。   For example, the first precast deck 10 and the second precast deck 20 are precast decks that form highway bridges. In the expressway, a plurality of precast floor slabs are arranged along the bridge axis direction D1, and a part of the plurality of precast floor slabs is a first precast floor slab 10 and a second precast floor slab 20. And The shape and size of the first precast floor slab 10 may be the same as or different from the shape and size of the second precast floor slab 20.

本実施形態において、第１プレキャスト床版１０、第２プレキャスト床版２０及び連結部材３０は工場で予め製造され、予め製造された第１プレキャスト床版１０、第２プレキャスト床版２０及び連結部材３０が現場に搬送される。第１プレキャスト床版１０、連結部材３０及び第２プレキャスト床版２０が連結する方向と橋軸方向Ｄ１とは互いに一致している。   In the present embodiment, the first precast floor slab 10, the second precast floor slab 20, and the connecting member 30 are manufactured in advance in a factory, and the first precast floor slab 10, the second precast floor slab 20, and the connecting member 30 are manufactured in advance. Is transported to the site. The direction in which the first precast floor slab 10, the connecting member 30, and the second precast floor slab 20 are connected coincides with the bridge axial direction D1.

第１プレキャスト床版１０は、略直方体状を成す第１プレキャストブロック１１と、橋軸方向Ｄ１に延びる第１鉄筋１２とを備えている。第２プレキャスト床版２０は、第１プレキャストブロック１１及び第１鉄筋１２と同様の第２プレキャストブロック２１及び第２鉄筋２２を備えている。   The first precast floor slab 10 includes a first precast block 11 having a substantially rectangular parallelepiped shape, and a first reinforcing bar 12 extending in the bridge axis direction D1. The second precast floor slab 20 includes a second precast block 21 and a second rebar 22 similar to the first precast block 11 and the first rebar 12.

第１プレキャストブロック１１及び第２プレキャストブロック２１は、例えば、橋軸方向Ｄ１及び橋軸直角方向Ｄ２に延びる路面部位を構成する。すなわち、第１プレキャストブロック１１の上面１１ａ、及び第２プレキャストブロック２１の上面２１ａは、共に路面を構成する。   The first precast block 11 and the second precast block 21 constitute, for example, road surface portions extending in the bridge axis direction D1 and the bridge axis perpendicular direction D2. That is, the upper surface 11a of the first precast block 11 and the upper surface 21a of the second precast block 21 together constitute a road surface.

第１プレキャストブロック１１及び第２プレキャストブロック２１は、鉛直方向Ｄ３に厚みを有する。第１プレキャストブロック１１及び第２プレキャストブロック２１の鉛直方向Ｄ３の厚さは、例えば、２０ｃｍ以上且つ２４ｃｍ以下であり、継手空間Ｔの橋軸方向Ｄ１の平均長さも２０ｃｍ以上且つ２４ｃｍ以下である。但し、これらの値は適宜変更可能である。   The first precast block 11 and the second precast block 21 have a thickness in the vertical direction D3. The thickness in the vertical direction D3 of the first precast block 11 and the second precast block 21 is, for example, 20 cm or more and 24 cm or less, and the average length in the bridge axis direction D1 of the joint space T is also 20 cm or more and 24 cm or less. However, these values can be changed as appropriate.

第１プレキャストブロック１１及び第２プレキャストブロック２１は、例えば、道路橋の路面を成す部位であるため、車両等の荷重を受ける。また、第１プレキャストブロック１１の橋軸方向Ｄ１の一端に位置する第１端面１１ｂと、第２プレキャストブロック２１の橋軸方向Ｄ１の一端に位置する第２端面２１ｂとが連結することによって連結構造１が構築される。   The first precast block 11 and the second precast block 21 are, for example, portions that form the road surface of a road bridge, and therefore receive a load such as a vehicle. In addition, the first end face 11b located at one end in the bridge axis direction D1 of the first precast block 11 and the second end face 21b located at one end in the bridge axis direction D1 of the second precast block 21 are connected to each other. 1 is built.

第１端面１１ｂは、第２端面２１ｂに橋軸方向Ｄ１に対向する面である。第１端面１１ｂ及び第２端面２１ｂは、例えば、共に平坦面である。第１端面１１ｂ及び第２端面２１ｂは、共に、鉛直下方に向かうに従って互いに突出する方向に傾斜する傾斜面である。すなわち、第１端面１１ｂは鉛直下方に向かうに従って第２端面２１ｂ側に延びており、第２端面２１ｂは鉛直下方に向かうに従って第１端面１１ｂ側に延びている。第１端面１１ｂと第２端面２１ｂとの間の距離は鉛直下方に向かうに従って短くなっている。   The first end face 11b is a face that faces the second end face 21b in the bridge axis direction D1. The first end surface 11 b and the second end surface 21 b are both flat surfaces, for example. The first end surface 11 b and the second end surface 21 b are both inclined surfaces which are inclined in the direction in which they project to each other as they go vertically downward. That is, the first end face 11b extends toward the second end face 21b as it goes vertically downward, and the second end face 21b extends toward the first end face 11b as it goes vertically downward. The distance between the first end face 11b and the second end face 21b decreases as it goes vertically downward.

第１端面１１ｂ及び第２端面２１ｂは、共に、鉛直面Ｓに対して傾斜しており、鉛直面Ｓに対する第１端面１１ｂの傾斜角度θ１は、例えば、５°以上且つ１５°以下である。鉛直面Ｓに対する第２端面２１ｂの傾斜角度θ２も、例えば、５°以上且つ１５°以下である。但し、これらの値は適宜変更可能である。   The first end surface 11b and the second end surface 21b are both inclined with respect to the vertical surface S, and the inclination angle θ1 of the first end surface 11b with respect to the vertical surface S is, for example, 5 ° or more and 15 ° or less. The inclination angle θ2 of the second end face 21b with respect to the vertical plane S is also, for example, 5 ° or more and 15 ° or less. However, these values can be changed as appropriate.

傾斜角度θ１，θ２が５°以上であることにより、連結部材３０の上からの挿入を一層容易に行うことができると共に、連結部材３０への上からの力（せん断力）に対する耐性をより高めることができる。また、傾斜角度θ１，θ２が１５°以下であることにより、継手空間Ｔから連結部材３０が抜け出す懸念を解消することができる。なお、傾斜角度θ１及び傾斜角度θ２は、互いに同一であってもよいし、互いに異なっていてもよい。   Since the inclination angles θ1 and θ2 are 5 ° or more, the insertion from above the connecting member 30 can be more easily performed, and the resistance against the force (shearing force) from above to the connecting member 30 is further enhanced. be able to. Moreover, the concern that the connection member 30 slips out of the joint space T can be eliminated by setting inclination angle (theta) 1 and (theta) 2 to 15 degrees or less. In addition, inclination-angle (theta) 1 and inclination-angle (theta) 2 may mutually be the same, and may mutually differ.

第１鉄筋１２の外周面には、例えば、ネジが形成されている。第１鉄筋１２は、例えば、鉛直方向Ｄ３に力を受けたときにダウエル作用（ダボ作用）を生じさせるダウエル鉄筋である。第１鉄筋１２のダウエル作用により、連結構造１のせん断に抵抗するダウエル効果を発揮する。第１鉄筋１２は、第１プレキャストブロック１１に埋め込まれると共に第１端面１１ｂから棒状に突出している。   For example, a screw is formed on the outer peripheral surface of the first reinforcing bar 12. The first reinforcing bar 12 is, for example, a dowel reinforcing bar that causes a dowel action (a dowel action) when receiving a force in the vertical direction D3. Due to the dowel action of the first rebar 12, the dowel effect which resists the shear of the connection structure 1 is exerted. The first reinforcing bar 12 is embedded in the first precast block 11 and protrudes in a rod shape from the first end face 11 b.

第１鉄筋１２は、第１端面１１ｂから突出した突出部１２ａと、第１プレキャストブロック１１に埋設された埋設部１２ｂとを有する。突出部１２ａは、第２プレキャスト床版２０に向かって直線状に延びており、埋設部１２ｂは、各突出部１２ａから連続して橋軸方向Ｄ１に延びている。   The first reinforcing bar 12 has a protrusion 12 a protruding from the first end face 11 b and an embedded portion 12 b embedded in the first precast block 11. The protrusions 12a extend linearly toward the second precast floor slab 20, and the embedded portions 12b extend continuously from the protrusions 12a in the bridge axial direction D1.

第１鉄筋１２は、第１プレキャスト床版１０において複数本配筋されている。突出部１２ａは、第１端面１１ｂから第２端面２１ｂ側に突出するせん断キーである。突出部１２ａは、橋軸直角方向Ｄ２に沿って複数配置されており、且つ鉛直方向Ｄ３に沿って複数（例えば２本）配置されている。鉛直方向Ｄ３の下段に位置する突出部１２ａの基端は、上段に位置する突出部１２ａの基端よりも第２プレキャスト床版２０側に位置する。   A plurality of first reinforcing bars 12 are arranged in the first precast floor slab 10. The protrusion 12a is a shear key that protrudes from the first end surface 11b to the second end surface 21b. A plurality of (two, for example) protrusions 12a are disposed along the bridge axis perpendicular direction D2 and along the vertical direction D3. The base end of the protrusion 12a located in the lower stage of the perpendicular direction D3 is located in the 2nd precast floor slab 20 side rather than the base end of the protrusion 12a located in an upper stage.

第２鉄筋２２の構成及び作用は、例えば、第１鉄筋１２の構成及び作用と同一である。第２鉄筋２２は、第２プレキャストブロック２１に埋め込まれると共に第２端面２１ｂから棒状に突出している。第２鉄筋２２は、第２プレキャストブロック２１から突出した突出部２２ａと、第２プレキャストブロック２１に埋設された埋設部２２ｂとを有する。   The configuration and action of the second reinforcing bar 22 are, for example, the same as the configuration and action of the first reinforcing bar 12. The second reinforcing bar 22 is embedded in the second precast block 21 and protrudes in a rod shape from the second end face 21 b. The second reinforcing bar 22 has a protrusion 22 a protruding from the second precast block 21 and a buried portion 22 b embedded in the second precast block 21.

突出部２２ａは、第２端面２１ｂから第１端面１１ｂに向かって突出するせん断キーである。突出部２２ａは、第１プレキャスト床版１０に向かって直線状に延びている。突出部２２ａの配置は、例えば、突出部１２ａの配置と同様であり、各突出部２２ａの高さは、各突出部１２ａの高さと同一である。   The protrusion 22a is a shear key that protrudes from the second end face 21b toward the first end face 11b. The protrusion 22 a extends linearly toward the first precast floor slab 10. The arrangement of the protrusions 22a is, for example, the same as the arrangement of the protrusions 12a, and the height of each protrusion 22a is the same as the height of each protrusion 12a.

連結部材３０は、第１端面１１ｂと第２端面２１ｂの間に位置する継手空間Ｔ（目地空間）に配置される。連結部材３０は、例えば、鋼板によって形成されている。連結部材３０は、継手空間Ｔにおいて橋軸直角方向Ｄ２に長く延びており、平面視における連結部材３０の形状は橋軸直角方向Ｄ２に長く延びる長方形状とされている。   The connection member 30 is disposed in a joint space T (joint space) located between the first end face 11 b and the second end face 21 b. The connection member 30 is formed of, for example, a steel plate. The connecting member 30 extends long in the joint space T in the direction perpendicular to the bridge axis D2, and the shape of the connecting member 30 in a plan view is a rectangular shape extending in the direction perpendicular to the bridge axis D2.

連結部材３０は、一対の側板部３１と、一対の側板部３１の上端同士を連結する上板部３２とを備える。上板部３２の上面３２ａは、例えば、第１プレキャスト床版１０の上面１１ａ、及び第２プレキャスト床版２０の上面２１ａと面一である。橋軸方向Ｄ１及び鉛直方向Ｄ３に延びる平面で切断したときの連結部材３０の断面は、例えば、上底が下底よりも長い等脚台形状、すなわち、２つの側板部３１が逆ハの字状とされた形状である。   The connecting member 30 includes a pair of side plate portions 31 and an upper plate portion 32 connecting upper ends of the pair of side plate portions 31. The upper surface 32 a of the upper plate portion 32 is, for example, flush with the upper surface 11 a of the first precast floor plate 10 and the upper surface 21 a of the second precast floor plate 20. The cross section of the connecting member 30 when cut by a plane extending in the bridge axial direction D1 and the vertical direction D3 is, for example, an equal leg trapezoidal shape in which the upper base is longer than the lower base, that is, the two side plates 31 It is shaped like a

上板部３２に対する側板部３１の角度は、鋭角とされている。各側板部３１は、前述した鉛直面Ｓに対して傾斜しており、鉛直面Ｓに対する各側板部３１の傾斜角度は、例えば、傾斜角度θ１，θ２と同一である。この場合、各側板部３１は、第１端面１１ｂ及び第２端面２１ｂのそれぞれと平行に延在する。   The angle of the side plate portion 31 with respect to the upper plate portion 32 is an acute angle. Each side plate portion 31 is inclined with respect to the vertical surface S described above, and the inclination angle of each side plate portion 31 with respect to the vertical surface S is, for example, the same as the inclination angles θ1 and θ2. In this case, each side plate portion 31 extends in parallel with each of the first end face 11 b and the second end face 21 b.

図１及び図３に示されるように、一対の側板部３１のそれぞれは、第１端面１１ｂ及び第２端面２１ｂのそれぞれに対向する側鋼板である。側板部３１は、第１端面１１ｂ及び第２端面２１ｂのそれぞれに対向する外面３１ａと、外面３１ａの反対側を向く内面３１ｂとを有する。   As FIG.1 and FIG.3 shows, each of a pair of side-plate part 31 is a side steel plate which each opposes the 1st end surface 11b and the 2nd end surface 21b. The side plate portion 31 has an outer surface 31a opposed to each of the first end surface 11b and the second end surface 21b, and an inner surface 31b facing the opposite side of the outer surface 31a.

外面３１ａ及び内面３１ｂは、例えば、共に平坦面とされている。外面３１ａと第１端面１１ｂの間の隙間Ｋ１、及び外面３１ａと第２端面２１ｂの間の隙間Ｋ２は、力の伝達等の観点から狭い方が好ましく、例えば、隙間Ｋ１，Ｋ２が広い場合には、後述する充填部材４１又はシム４２（図６及び図７参照）等の埋め込み部材４０が埋め込まれる。   The outer surface 31a and the inner surface 31b are both flat, for example. The gap K1 between the outer surface 31a and the first end surface 11b and the gap K2 between the outer surface 31a and the second end surface 21b are preferably narrow from the viewpoint of transmission of force, for example, when the gaps K1 and K2 are wide. The embedded member 40 such as a filling member 41 or a shim 42 (see FIGS. 6 and 7) described later is embedded.

内面３１ｂには、第１鉄筋１２及び第２鉄筋２２のそれぞれを内面３１ｂに締め付ける締め付け部材５０が設けられる。また、側板部３１は、外面３１ａ及び内面３１ｂを貫通すると共に、第１鉄筋１２及び第２鉄筋２２のそれぞれが通される孔部３１ｃを有する。孔部３１ｃは、せん断キーである突出部１２ａ，２２ａに対向する位置に設けられており、突出部１２ａ，２２ａのそれぞれと係合する。   The inner surface 31 b is provided with a fastening member 50 for fastening each of the first reinforcing bar 12 and the second reinforcing bar 22 to the inner surface 31 b. Further, the side plate portion 31 has a hole 31 c which passes through the outer surface 31 a and the inner surface 31 b and through which the first reinforcing bar 12 and the second reinforcing bar 22 pass. The holes 31c are provided at positions facing the protrusions 12a and 22a, which are shear keys, and engage with the protrusions 12a and 22a, respectively.

孔部３１ｃは、例えば、側板部３１の上板部３２との反対側に位置する端部３１ｄから上板部３２に向かって切り欠かれる切り欠き部である。孔部３１ｃの端部３１ｄとの反対側は、例えば、逆Ｕ字状に湾曲している。各孔部３１ｃには、下から第１鉄筋１２及び第２鉄筋２２のそれぞれが挿入される。   The hole 31 c is, for example, a notch which is cut out toward the upper plate 32 from an end 31 d located on the opposite side to the upper plate 32 of the side plate 31. The opposite side to the end 31 d of the hole 31 c is, for example, curved in an inverted U shape. The first reinforcing bars 12 and the second reinforcing bars 22 are inserted into the respective holes 31 c from the bottom.

締め付け部材５０は、内面３１ｂに押し当てられるワッシャ５１と、ワッシャ５１の内面３１ｂとの反対側でワッシャ５１を内面３１ｂに押し付けるナット５２とを備える。ナット５２は第１鉄筋１２及び第２鉄筋２２の各外周面に形成されたネジに螺合する。第１鉄筋１２及び第２鉄筋２２のそれぞれにねじ込まれたナット５２によってワッシャ５１が各内面３１ｂに押し付けられることにより、第１鉄筋１２及び第２鉄筋２２のそれぞれが締め付けられる。   The tightening member 50 includes a washer 51 pressed against the inner surface 31 b and a nut 52 pressing the washer 51 against the inner surface 31 b opposite to the inner surface 31 b of the washer 51. The nut 52 is screwed into a screw formed on each outer peripheral surface of the first reinforcing bar 12 and the second reinforcing bar 22. Each of the first reinforcing bar 12 and the second reinforcing bar 22 is tightened by the washer 51 being pressed against the inner surface 31 b by the nut 52 screwed into each of the first reinforcing bar 12 and the second reinforcing bar 22.

上板部３２は、継手空間Ｔを、上面１１ａ及び上面２１ａが連続するように覆工する上面鋼板である。上板部３２は、上面１１ａ及び上面２１ａと連続する上面３２ａと、上面３２ａの反対側を向く下面３２ｂとを有する。上面３２ａ及び下面３２ｂは、例えば、共に平坦面とされている。図２、図３及び図４に示されるように、上板部３２の下面３２ｂ、及び各側板部３１の内面３１ｂからは、連結部材３０の補強のためのリブ３３が突出している。   The upper plate portion 32 is a top steel plate that covers the joint space T such that the upper surface 11 a and the upper surface 21 a are continuous. The upper plate portion 32 has an upper surface 32a continuous with the upper surface 11a and the upper surface 21a, and a lower surface 32b facing the opposite side of the upper surface 32a. The upper surface 32a and the lower surface 32b are both flat surfaces, for example. As shown in FIG. 2, FIG. 3 and FIG. 4, a rib 33 for reinforcing the connecting member 30 protrudes from the lower surface 32 b of the upper plate portion 32 and the inner surface 31 b of each side plate portion 31.

リブ３３は、例えば、側板部３１及び上板部３２の双方と交差する方向に延在する隔壁鋼板である。リブ３３は、例えば、複数設けられており、複数のリブ３３は橋軸直角方向Ｄ２に沿って並ぶように配置されている。一例として、複数のリブ３３は橋軸直角方向Ｄ２に沿って等間隔に配置されており、２つのリブ３３の間に孔部３１ｃが形成されている。すなわち、リブ３３と孔部３１ｃは、橋軸直角方向Ｄ２に沿って交互に設けられてもよい。但し、リブ３３の数及び配置態様は適宜変更可能である。リブ３３と上板部３２と側板部３１の交点は充填材性（エア抜き）を考慮して切り欠いてもよい。   The rib 33 is, for example, a partition steel plate extending in a direction intersecting with both the side plate portion 31 and the upper plate portion 32. For example, a plurality of ribs 33 are provided, and the plurality of ribs 33 are arranged so as to be aligned along the bridge axis perpendicular direction D2. As an example, the plurality of ribs 33 are arranged at equal intervals along the bridge axis perpendicular direction D2, and a hole 31c is formed between the two ribs 33. That is, the ribs 33 and the holes 31c may be alternately provided along the bridge axis perpendicular direction D2. However, the number and arrangement of the ribs 33 can be changed as appropriate. The intersection of the rib 33, the upper plate portion 32, and the side plate portion 31 may be cut out in consideration of the filler property (air removal).

図１に示されるように、一対の側板部３１と上板部３２とによって囲まれた領域には、充填材６０が充填される。充填材６０は、例えば、セメント系固化材であり、せん断キーである突出部１２ａ，２２ａ及び締め付け部材５０と一体化する。一例として、充填材６０は、高強度繊維補強モルタルであってもよいが、適宜変更可能である。   As shown in FIG. 1, a filler material 60 is filled in a region surrounded by the pair of side plate portions 31 and the upper plate portion 32. The filler 60 is, for example, a cement-based solidifying material, and is integrated with the protrusions 12 a and 22 a, which are shear keys, and the tightening member 50. As an example, the filler 60 may be a high-strength fiber-reinforced mortar, but can be changed as appropriate.

次に、第１プレキャスト床版１０と第２プレキャスト床版２０とを連結部材３０を介して連結する連結方法について図５〜図８を参照しながら説明する。まず、第１プレキャスト床版１０、第２プレキャスト床版２０及び連結部材３０を準備する（第１プレキャスト床版、第２プレキャスト床版及び連結部材を準備する工程）。第１プレキャスト床版１０、第２プレキャスト床版２０及び連結部材３０は、工場において予め製造してもよい。   Next, a connecting method of connecting the first precast floor slab 10 and the second precast floor slab 20 via the connecting member 30 will be described with reference to FIGS. 5 to 8. First, the first precast floor slab 10, the second precast floor slab 20 and the connecting member 30 are prepared (step of preparing the first precast floor slab, the second precast floor slab and the connecting member). The first precast floor slab 10, the second precast floor slab 20 and the connecting member 30 may be manufactured in advance in a factory.

次に、第１プレキャスト床版１０、第２プレキャスト床版２０及び連結部材３０を現場まで運搬する。そして、吊り上げ及び吊り降ろし等を行うことにより第１プレキャスト床版１０及び第２プレキャスト床版２０を設置し、図５に示されるように、橋軸方向Ｄ１に沿うように第１プレキャスト床版１０の第１端面１１ｂと第２プレキャスト床版２０の第２端面２１ｂとを突き合わせる。   Next, the first precast floor slab 10, the second precast floor slab 20 and the connecting member 30 are transported to the site. Then, the first precast floor plate 10 and the second precast floor plate 20 are installed by carrying out lifting and lowering and the like, and as shown in FIG. 5, the first precast floor plate 10 along the bridge axial direction D1. The first end face 11 b of the second precast floor slab 20 is butted against the second end face 21 b of the second precast floor slab 20.

このとき、第１端面１１ｂ及び第２端面２１ｂが逆ハの字状となるように第１プレキャスト床版１０及び第２プレキャスト床版２０の配置を行う。すなわち、第１端面１１ｂ及び第２端面２１ｂが共に鉛直下方に向かうに従って互いに突出する方向に傾斜するように第１プレキャスト床版１０及び第２プレキャスト床版２０を配置する（第１プレキャスト床版及び第２プレキャスト床版を配置する工程）。   At this time, the first precast floor slab 10 and the second precast floor slab 20 are arranged such that the first end face 11 b and the second end face 21 b have a reverse C shape. That is, the first precast floor slab 10 and the second precast floor slab 20 are arranged such that the first end face 11b and the second end face 21b are inclined in the direction in which the first end face 11b and the second end face 21b project vertically downward. Step of placing a second precast floor slab).

また、第１プレキャスト床版１０の下面１１ｃと、第２プレキャスト床版２０の下面２１ｃとに第１端面１１ｂ及び第２端面２１ｂのそれぞれから突出する突出部材７０を固定する（突出部材を固定する工程）。突出部材７０は、連結部材３０の沈み込みを抑制するために設けられる。突出部材７０は、例えば、下面１１ｃ，２１ｃに接触する板状部７１と、板状部７１及び下面１１ｃ，２１ｃにねじ込まれるネジ部７２と、板状部７１の下面１１ｃ，２１ｃとの反対側に当接してネジ部７２に締め付けられるナット７３とを備える。   Further, a projecting member 70 projecting from each of the first end face 11 b and the second end face 21 b is fixed to the lower surface 11 c of the first precast floor slab 10 and the lower surface 21 c of the second precast floor slab 20 Process). The projecting member 70 is provided to suppress the sinking of the connecting member 30. The projecting member 70 is, for example, a plate-like portion 71 in contact with the lower surface 11c, 21c, a screw portion 72 screwed into the plate-like portion 71 and the lower surface 11c, 21c, and a side opposite to the lower surface 11c, 21c of the plate-like portion 71. And a nut 73 that is tightened to the screw portion 72 in contact with the

第１端面１１ｂ及び第２端面２１ｂのそれぞれから突出する突出部材７０を下面１１ｃ，２１ｃに固定した後には、連結部材３０を継手空間Ｔに上から挿入する。このとき、第１鉄筋１２及び第２鉄筋２２の上方に孔部３１ｃが位置するように連結部材３０の位置合わせを行い、その後、連結部材３０を降ろすことによって第１鉄筋１２及び第２鉄筋２２のそれぞれを孔部３１ｃに通す。   After fixing the projecting members 70 protruding from the first end surface 11 b and the second end surface 21 b to the lower surfaces 11 c and 21 c, the connecting member 30 is inserted into the joint space T from above. At this time, alignment of the connecting member 30 is performed so that the hole 31 c is located above the first reinforcing bar 12 and the second reinforcing bar 22, and then, the first reinforcing bar 12 and the second reinforcing bar 22 are lowered. Pass through the holes 31c.

そして、各側板部３１を第１端面１１ｂ及び第２端面２１ｂのそれぞれに対向させると共に、上板部３２の上面３２ａが第１プレキャスト床版１０の上面１１ａ及び第２プレキャスト床版２０の上面２１ａと連続するように連結部材３０を配置する（連結部材を配置する工程）。   And while making each side plate part 31 oppose each of the 1st end face 11b and the 2nd end face 21b, the upper surface 32a of the upper plate part 32 is the upper surface 11a of the 1st precast floor slab 10, and the upper surface 21a of the 2nd precast floor slab 20. The connection member 30 is arranged to be continuous with the above (a step of arranging the connection member).

連結部材３０を配置した後には、図６及び図７に示されるように、側板部３１と第１端面１１ｂとの間の隙間Ｋ１、及び側板部３１と第２端面２１ｂとの間の隙間Ｋ２に埋め込み部材４０を埋め込む（埋め込み部材を埋め込む工程）。埋め込み部材４０は、必要に応じて隙間Ｋ１，Ｋ２に埋め込まれるものであり、例えば、隙間Ｋ１，Ｋ２が十分に小さい場合には不要とすることができる。   After arranging the connecting member 30, as shown in FIGS. 6 and 7, the gap K1 between the side plate portion 31 and the first end surface 11b and the gap K2 between the side plate portion 31 and the second end surface 21b. Embedded the embedding member 40 (step of embedding the embedding member). The embedding member 40 is embedded in the gaps K1 and K2 as necessary, and can be unnecessary, for example, when the gaps K1 and K2 are sufficiently small.

埋め込み部材４０は、例えば、充填部材４１又はシム４２である。一例として、充填部材４１は、無収縮モルタルであり、速く固まって速効性を発揮するモルタルであってもよい。埋め込み部材４０として充填部材４１を用いる場合、隙間Ｋ１，Ｋ２の大きさに関係なく、速やかに隙間Ｋ１，Ｋ２を塞ぐことができる。   The embedding member 40 is, for example, a filling member 41 or a shim 42. As an example, the filling member 41 may be a non-shrink mortar, and may be a mortar that hardens quickly and exhibits rapid effect. When the filling member 41 is used as the embedding member 40, the gaps K1 and K2 can be quickly closed regardless of the sizes of the gaps K1 and K2.

シム４２は、隙間Ｋ１，Ｋ２を埋める板材である。シム４２は、側板部３１の孔部３１ｃと同様の孔部４２ａを有し、孔部４２ａに第１鉄筋１２及び第２鉄筋２２のそれぞれが通される。シム４２の厚さは隙間Ｋ１，Ｋ２の大きさに応じて適宜変更可能である。互いに厚さが異なる複数種類のシム４２を予め準備しておいてもよく、この場合、隙間Ｋ１，Ｋ２の大きさに応じて適切なシム４２を選択できる。なお、隙間Ｋ１，Ｋ２に埋め込むシム４２の枚数は、１枚であってもよいし、複数枚であってもよい。   The shim 42 is a plate material that fills the gaps K1 and K2. The shim 42 has a hole 42a similar to the hole 31c of the side plate 31, and each of the first reinforcing bar 12 and the second reinforcing bar 22 is passed through the hole 42a. The thickness of the shim 42 can be appropriately changed according to the size of the gaps K1 and K2. A plurality of types of shims 42 having different thicknesses may be prepared in advance, and in this case, an appropriate shim 42 can be selected according to the size of the gaps K1 and K2. The number of shims 42 embedded in the gaps K1 and K2 may be one or more.

また、各側板部３１において第１鉄筋１２及び第２鉄筋２２のそれぞれを締め付け部材５０によって締め付ける（締め付け部材によって締め付ける工程）。具体的には、第１鉄筋１２及び第２鉄筋２２のそれぞれをワッシャ５１に挿入し、ワッシャ５１を側板部３１の内面３１ｂに押し当てた状態とする。   Further, in each side plate portion 31, each of the first reinforcing bar 12 and the second reinforcing bar 22 is tightened by the tightening member 50 (step of tightening by the tightening member). Specifically, each of the first reinforcing bar 12 and the second reinforcing bar 22 is inserted into the washer 51, and the washer 51 is pressed against the inner surface 31 b of the side plate portion 31.

そして、ナット５２を第１鉄筋１２及び第２鉄筋２２のそれぞれに螺合してナット５２のねじ込みによってワッシャ５１及び側板部３１を締め付ける。このとき、ナット５２の締結力によって側板部３１が撓んで第１端面１１ｂ及び第２端面２１ｂのそれぞれに押し付けられて馴染むため、第１プレキャスト床版１０、連結部材３０及び第２プレキャスト床版２０の構造的な一体性が高められる。   Then, the nut 52 is screwed into each of the first reinforcing bar 12 and the second reinforcing bar 22, and the washer 51 and the side plate portion 31 are tightened by screwing in the nut 52. At this time, the side plate portion 31 is bent by the fastening force of the nut 52 and pressed against the first end face 11 b and the second end face 21 b to be fitted, so that the first precast floor plate 10, the connecting member 30 and the second precast floor plate 20. The structural integrity of the

以上の工程を経ることにより、第１プレキャスト床版１０、連結部材３０及び第２プレキャスト床版２０を備えた連結構造１の仮設が完了する。すなわち、前述したように第１プレキャスト床版１０、連結部材３０及び第２プレキャスト床版２０の構造的な一体性が高められた後に、仮設された連結構造１の上に車両を走行させることが可能となる。以上の仮設作業は、例えば、３時間程度で速やかに完了させることができるため、夜のうちに作業を完了させてその翌日に連結構造１を備えた道路を開放させることが可能となる。   Through the above steps, the temporary construction of the connection structure 1 provided with the first precast floor slab 10, the connecting member 30, and the second precast floor slab 20 is completed. That is, as described above, after the structural integrity of the first precast floor slab 10, the connecting member 30, and the second precast floor slab 20 is enhanced, the vehicle can be run on the temporarily installed connection structure 1. It becomes possible. The temporary installation work described above can be completed promptly, for example, in about 3 hours, so it is possible to complete the work in the evening and open the road provided with the connection structure 1 the next day.

更に、一対の側板部３１と上板部３２とによって囲まれた領域に充填材６０を充填させる（充填材を充填する工程）。この充填作業は道路を開放した後に行うことが可能である。この充填作業では、図８に示されるように、下面１１ｃ，２１ｃから突出部材７０を外して、突出部材７０が固定されていた位置に継手空間Ｔを塞ぐ型枠８０を配置する。   Furthermore, the filler 60 is filled in a region surrounded by the pair of side plate parts 31 and the upper plate part 32 (a step of filling the filler). This filling operation can be done after opening the road. In this filling operation, as shown in FIG. 8, the projecting member 70 is removed from the lower surfaces 11c and 21c, and the mold 80 for closing the joint space T is disposed at the position where the projecting member 70 was fixed.

なお、外した突出部材７０は再利用することが可能であり、例えば、突出部材７０のネジ部７２及びナット７３で型枠８０を下面１１ｃ，２１ｃに固定させる（型枠を配置する工程）。その後、継手空間Ｔへの充填材６０の充填を行い、充填材６０を硬化させて型枠８０を外した後に図１に示される連結構造１が完成する。   The removed projecting member 70 can be reused. For example, the mold 80 is fixed to the lower surfaces 11 c and 21 c by the screw portion 72 and the nut 73 of the projecting member 70 (step of arranging the mold). Thereafter, the filling material 60 is filled into the joint space T, and the filling material 60 is cured to remove the form 80, and then the connection structure 1 shown in FIG. 1 is completed.

次に、本実施形態に係る連結構造１及び連結方法の作用効果について詳細に説明する。   Next, the effect of the connection structure 1 and the connection method according to the present embodiment will be described in detail.

連結構造１及び前述した連結方法において、第１プレキャスト床版１０の第１端面１１ｂと、第２プレキャスト床版２０の第２端面２１ｂは、共に、鉛直下方に向かうに従って互いに突出する方向に傾斜している。すなわち、第１端面１１ｂ及び第２端面２１ｂは、鉛直下方に向かうにつれて突出するように傾斜している。   In the connection structure 1 and the connection method described above, the first end face 11b of the first precast floor slab 10 and the second end face 21b of the second precast floor slab 20 are both inclined in the direction in which they project in the downward vertical direction. ing. That is, the first end surface 11b and the second end surface 21b are inclined so as to protrude as they go vertically downward.

連結部材３０は、第１鉄筋１２及び第２鉄筋２２を通すと共に第１端面１１ｂ及び第２端面２１ｂのそれぞれに対向する一対の側板部３１と、一対の側板部３１の上端同士を連結する上板部３２とを備える。第１端面１１ｂ、第２端面２１ｂ、及び一対の側板部３１は、共に、鉛直下方に向かうに従って互いに突出する方向に傾斜するので、連結部材３０を上から挿入するときに、各側板部３１を第１端面１１ｂ及び第２端面２１ｂのそれぞれに接近させることができる。   The connecting member 30 connects the upper ends of the pair of side plate portions 31 passing through the first reinforcing bar 12 and the second reinforcing bar 22 and facing each of the first end face 11b and the second end face 21b, and the pair of side plate portions 31 And a plate portion 32. The first end face 11b, the second end face 21b, and the pair of side plate portions 31 are both inclined in the direction in which they project to each other as they go vertically downward, so when inserting the connecting member 30 from the top, each side plate portion 31 It can be made to approach each of the 1st end face 11b and the 2nd end face 21b.

よって、連結部材３０の挿入を容易に行うことができると共に、連結部材３０と第１端面１１ｂとの間の隙間Ｋ１、及び連結部材３０と第２端面２１ｂとの間の隙間Ｋ２を小さくすることができる。従って、連結作業の施工を速やかに行うことができる。また、連結部材３０に鉛直上方から力がかかっても、傾斜する一対の側板部３１によって当該力に抵抗することができる。   Therefore, while being able to perform insertion of the connection member 30 easily, the clearance gap K1 between the connection member 30 and the 1st end surface 11b and the clearance gap K2 between the connection member 30 and the 2nd end surface 21b are made small. Can. Therefore, construction of connection work can be performed promptly. Further, even if a force is applied to the connecting member 30 from vertically above, the force can be resisted by the pair of inclined side plates 31.

すなわち、傾斜する一対の側板部３１によって、第１プレキャスト床版１０、第２プレキャスト床版２０及び連結部材３０のせん断抵抗を高めることができる。第１プレキャスト床版１０、第２プレキャスト床版２０及び連結部材３０の耐久性を維持することができる。また、第１端面１１ｂ、第２端面２１ｂ及び側板部３１が傾斜していることにより、前述したようにせん断抵抗を高めることができるので、ダウエル鉄筋である第１鉄筋１２及び第２鉄筋２２の仕様を下げることが可能となる。すなわち、第１鉄筋１２及び第２鉄筋２２として使用できる鉄筋の種類を増やすことが可能である。   That is, the shear resistance of the first precast floor slab 10, the second precast floor slab 20, and the connecting member 30 can be increased by the pair of inclined side plate portions 31. Durability of the first precast floor slab 10, the second precast floor slab 20, and the connecting member 30 can be maintained. In addition, since the first end face 11b, the second end face 21b, and the side plate portion 31 are inclined, the shear resistance can be increased as described above, and therefore, the first rebar 12 and the second rebar 22 which are dowels are reinforced. It is possible to lower the specification. That is, it is possible to increase the types of reinforcing bars that can be used as the first reinforcing bar 12 and the second reinforcing bar 22.

また、連結構造１及び連結方法では、一対の側板部３１と上板部３２とによって囲まれた領域に充填される充填材６０を備えてもよい。この場合、一対の側板部３１と上板部３２との間に充填材６０が打設されるため、第１プレキャスト床版１０、第２プレキャスト床版２０及び連結部材３０の耐久性を高めることができると共に、連結構造１の構造的な一体性を高めることができる。   In the connection structure 1 and the connection method, the filler 60 may be provided to be filled in a region surrounded by the pair of side plate portions 31 and the upper plate portion 32. In this case, since the filler 60 is cast between the pair of side plate portions 31 and the upper plate portion 32, the durability of the first precast floor plate 10, the second precast floor plate 20, and the connecting member 30 is enhanced. As a result, the structural integrity of the connection structure 1 can be enhanced.

また、連結構造１及び連結方法では、一対の側板部３１のそれぞれにおいて、第１鉄筋１２及び第２鉄筋２２のそれぞれを締め付ける締め付け部材５０を備える。従って、第１鉄筋１２及び第２鉄筋２２が締め付け部材５０によって一対の側板部３１のそれぞれに締め付けられるので、第１プレキャスト床版１０、第２プレキャスト床版２０及び連結部材３０を一層強固に連結することができる。   Moreover, in the connection structure 1 and the connection method, in each of the pair of side plate portions 31, a tightening member 50 is provided for tightening each of the first reinforcing bar 12 and the second reinforcing bar 22. Therefore, since the first reinforcing bar 12 and the second reinforcing bar 22 are tightened to the pair of side plate portions 31 by the tightening member 50, the first precast floor plate 10, the second precast floor plate 20 and the connecting member 30 are connected more firmly can do.

また、連結構造１及び連結方法では、側板部３１と第１端面１１ｂとの間の隙間Ｋ１、及び側板部３１と第２端面２１ｂとの間の隙間Ｋ２に埋め込まれる埋め込み部材４０を備えてもよい。この場合、第１プレキャスト床版１０、第２プレキャスト床版２０及び連結部材３０の構造的な一体性を更に高めることができる。   Further, in the connection structure 1 and the connection method, even if the embedded member 40 embedded in the gap K1 between the side plate portion 31 and the first end face 11b and the gap K2 between the side plate portion 31 and the second end face 21b is provided. Good. In this case, the structural integrity of the first precast floor slab 10, the second precast floor slab 20, and the connecting member 30 can be further enhanced.

また、連結構造１は、上板部３２の下面３２ｂ、及び各側板部３１の内面３１ｂから突出するリブ３３を備える。よって、上板部３２、及び一対の側板部３１のそれぞれから延びるリブ３３により、連結部材３０を補強することができる。従って、連結部材３０の強度を高めることができるので、連結部材３０による連結を更に強固にすることができる。   Further, the connection structure 1 includes the lower surface 32 b of the upper plate portion 32 and the rib 33 projecting from the inner surface 31 b of each side plate portion 31. Therefore, the connecting member 30 can be reinforced by the ribs 33 extending from the upper plate portion 32 and the pair of side plate portions 31 respectively. Therefore, since the strength of the connecting member 30 can be increased, the connection by the connecting member 30 can be further strengthened.

（第２実施形態）
次に、第２実施形態に係る連結構造及び連結方法について図９を参照しながら説明する。第２実施形態に係る連結構造は、第1実施形態に係る連結構造１と同様であるが、連結方法で用いる型枠９０が第１実施形態と異なっている。以降の説明では、第１実施形態と重複する説明を適宜省略する。 Second Embodiment
Next, a connection structure and a connection method according to the second embodiment will be described with reference to FIG. The connection structure according to the second embodiment is the same as the connection structure 1 according to the first embodiment, but a mold 90 used in the connection method is different from the first embodiment. In the following description, the description overlapping with that of the first embodiment is appropriately omitted.

型枠９０は、突出部材７０を取り外さない状態で第１プレキャスト床版１０及び第２プレキャスト床版２０に固定させることが可能である。型枠９０は、各突出部材７０の板状部７１の下面に接触する板状部９１と、板状部９１から突出する凸部９２とを備える。凸部９２は、一対の突出部材７０の間に嵌り込む部位である。   The formwork 90 can be fixed to the first precast floor plate 10 and the second precast floor plate 20 without removing the projecting member 70. The mold 90 includes a plate-like portion 91 in contact with the lower surface of the plate-like portion 71 of each projecting member 70 and a convex portion 92 projecting from the plate-like portion 91. The convex portion 92 is a portion to be fitted between the pair of projecting members 70.

凸部９２が一対の突出部材７０の間に嵌め込まれて板状部９１が板状部７１に接触するときに、凸部９２の上面は板状部７１の上面に一致する。また、板状部９１、板状部７１及び下面１１ｃ，２１ｃには、ネジ部７２がねじ込まれる。そして、ナット７３をネジ部７２にねじ込んでナット７３を板状部９１の下面に押し付けることにより、型枠９０を固定する。以上のように型枠９０を固定した後には、前述と同様、充填材６０を継手空間Ｔに充填し、充填材６０を硬化させることにより、連結構造１の構築が完了する。   When the convex portion 92 is fitted between the pair of projecting members 70 and the plate-like portion 91 contacts the plate-like portion 71, the upper surface of the convex portion 92 matches the upper surface of the plate-like portion 71. Moreover, the screw part 72 is screwed in the plate-like-part 91, the plate-like-part 71, and lower surface 11c, 21c. Then, the mold 73 is fixed by screwing the nut 73 into the screw portion 72 and pressing the nut 73 against the lower surface of the plate-like portion 91. After fixing the formwork 90 as described above, the filler material 60 is filled in the joint space T and the filler material 60 is hardened as described above, whereby the construction of the connection structure 1 is completed.

以上、第２実施形態では、傾斜する一対の側板部３１及び上板部３２を有する連結部材３０を備えているため、前述と同様の効果が得られる。また、第２実施形態では、型枠９０を用いて充填材６０の打設を行うことにより、第１プレキャスト床版１０及び第２プレキャスト床版２０のそれぞれから突出部材７０を外す作業を不要とすることができる。従って、連結作業の更なる効率化に寄与する。   As mentioned above, in 2nd Embodiment, since it has the connection member 30 which has a pair of side plate part 31 and the upper plate part 32 which incline, the effect similar to the above-mentioned is acquired. Further, in the second embodiment, by placing the filling material 60 using the mold 90, the operation of removing the projecting member 70 from each of the first precast floor plate 10 and the second precast floor plate 20 is unnecessary. can do. Therefore, it contributes to the further efficiency improvement of connection work.

（第３実施形態）
続いて、第３実施形態に係る連結構造及び連結方法について図１０を参照しながら説明する。第３実施形態に係る連結構造は、前述した連結部材３０及び締め付け部材５０とは異なる連結部材１００及び締め付け部材１１０を備える。連結部材１００は、一対の側板部１０１と上板部３２とを備える。 Third Embodiment
Subsequently, a connection structure and a connection method according to the third embodiment will be described with reference to FIG. The connection structure according to the third embodiment includes a connection member 100 and a tightening member 110 which are different from the connection member 30 and the tightening member 50 described above. The connecting member 100 includes a pair of side plate portions 101 and an upper plate portion 32.

側板部１０１には第１鉄筋１２を通すための孔部３１ｃが形成されている。側板部１０１の内面１０１ｂにおける孔部３１ｃの縁には凹凸部１０１ｃが設けられている。凹凸部１０１ｃは、例えば、山谷形状を備えた微小な凹凸である。締め付け部材１１０は、内面１０１ｂに押し当てられるワッシャ１１１と、ナット５２とを備える。ワッシャ１１１の側板部１０１への当接面には、凹凸部１１１ａが設けられている。凹凸部１１１ａは、凹凸部１０１ｃに噛み合わせるための部位であるため、凹凸部１０１ｃと同様、微小な山谷形状とされている。   In the side plate portion 101, a hole 31c for passing the first reinforcing bar 12 is formed. An uneven portion 101 c is provided at the edge of the hole 31 c in the inner surface 101 b of the side plate portion 101. The uneven portion 101c is, for example, a minute uneven portion having a mountain-and-valley shape. The tightening member 110 includes a washer 111 pressed against the inner surface 101 b and a nut 52. An uneven portion 111 a is provided on the contact surface of the washer 111 with the side plate portion 101. The uneven portion 111a is a portion for meshing with the uneven portion 101c, and thus, like the uneven portion 101c, has a minute peak and valley shape.

第３実施形態に係る連結方法では、締め付け部材１１０によって締め付ける工程において、ワッシャ１１１を側板部１０１の内面１０１ｂに押し当てて、ワッシャ１１１の凹凸部１１１ａを側板部１０１の凹凸部１０１ｃに噛み合わせる。このように凹凸部１１１ａを凹凸部１０１ｃに噛み合わせることにより、内面１０１ｂに対するワッシャ１１１の滑りが抑制される。   In the connection method according to the third embodiment, the washer 111 is pressed against the inner surface 101b of the side plate portion 101 in the step of tightening by the tightening member 110 to engage the uneven portion 111a of the washer 111 with the uneven portion 101c of the side plate portion 101. Thus, the sliding of the washer 111 with respect to the inner surface 101b is suppressed by engaging the uneven part 111a with the uneven part 101c.

以上、第３実施形態では、傾斜する一対の側板部１０１及び上板部３２を有する連結部材１００を備えるため、前述の各実施形態と同様の効果が得られる。また、第３実施形態では、連結部材１００に対する締め付け部材１１０の滑りが抑制されるため、締め付け部材１１０によって一層強固に締め付けを行うことができる。従って、連結構造の構造的な一体性を更に高めることができる。   As described above, in the third embodiment, since the connecting member 100 having the pair of side plate portions 101 and the upper plate portion 32 that inclines is provided, the same effects as those of the above-described embodiments can be obtained. Further, in the third embodiment, since the slip of the tightening member 110 with respect to the connection member 100 is suppressed, the tightening can be performed more firmly by the tightening member 110. Therefore, the structural integrity of the connection structure can be further enhanced.

以上、本発明に係る連結構造及び連結方法の各実施形態について説明したが、本発明は、前述の各実施形態に限定されるものではなく、各請求項に記載した要旨を変更しない範囲で変形してもよい。すなわち、連結構造を構成する各要素の構成、並びに、連結方法を構成する各工程の内容及び順序は適宜変更可能である。   As mentioned above, although each embodiment of a connection structure and a connection method concerning the present invention was described, the present invention is not limited to each above-mentioned embodiment, It is a range which does not change the gist described in each claim. You may That is, the configuration of each element constituting the connection structure, and the contents and order of each step constituting the connection method can be appropriately changed.

例えば、前述の実施形態では、埋め込み部材４０として充填部材４１又はシム４２を用いる例について説明した。しかしながら、埋め込み部材は、充填部材４１又はシム４２に限定されず適宜変更可能である。埋め込み部材として、例えば、充填部材４１とシム４２の両方を用いてもよい。   For example, in the above-mentioned embodiment, the example which uses filling member 41 or shim 42 as embedding member 40 was explained. However, the embedding member is not limited to the filling member 41 or the shim 42 and can be appropriately changed. For example, both the filling member 41 and the shim 42 may be used as the embedding member.

また、前述の実施形態では、側板部３１が複数の孔部３１ｃを備える例について説明したが、孔部の形状、大きさ及び配置態様は適宜変更可能である。更に、連結部材の材料についても適宜変更可能である。   Moreover, in the above-mentioned embodiment, although the side plate part 31 demonstrated the example provided with the several hole 31c, the shape of the hole, a magnitude | size, and arrangement | positioning aspect can be changed suitably. Furthermore, the material of the connecting member can be changed as appropriate.

また、前述の実施形態では、板状部７１、ネジ部７２及びナット７３を備える突出部材７０によって連結部材３０の沈み込みを抑える例について説明した。しかしながら、連結部材３０の沈み込みを抑える構成は、突出部材７０に限定されず適宜変更可能である。   Moreover, in the above-mentioned embodiment, the example which suppresses sinking of the connection member 30 by the projection member 70 provided with the plate-like-part 71, the screw part 72, and the nut 73 was demonstrated. However, the configuration for suppressing the sinking of the connecting member 30 is not limited to the projecting member 70 and can be appropriately changed.

また、前述の実施形態では、略直方体状の第１プレキャストブロック１１と第１鉄筋１２とを備えた第１プレキャスト床版１０について説明したが、第１プレキャスト床版の形状、大きさ及び材料は適宜変更可能である。第１プレキャスト床版が有する第１鉄筋の本数、及び配置態様についても適宜変更可能である。更に、第２プレキャスト床版についても上記と同様に変更可能である。   Moreover, although the above-mentioned embodiment demonstrated the 1st precast floor slab 10 provided with the substantially rectangular parallelepiped 1st precast block 11 and the 1st reinforcement 12, the shape, size, and material of the 1st precast floor slab are It can be changed as appropriate. The number of first reinforcing bars included in the first precast floor slab and the arrangement manner can also be changed as appropriate. Furthermore, the second precast floor slab can be modified in the same manner as described above.

１…連結構造、１０…第１プレキャスト床版、１１…第１プレキャストブロック、１１ａ…上面、１１ｂ…第１端面、１１ｃ…下面、１２…第１鉄筋、１２ａ…突出部、１２ｂ…埋設部、２０…第２プレキャスト床版、２１…第２プレキャストブロック、２１ａ…上面、２１ｂ…第２端面、２１ｃ…下面、２２…第２鉄筋、２２ａ…突出部、２２ｂ…埋設部、３０，１００…連結部材、３１，１０１…側板部、３１ａ…外面、３１ｂ，１０１ｂ…内面、３１ｃ…孔部、３２…上板部、３２ａ…上面、３２ｂ…下面、３３…リブ、４０…埋め込み部材、４１…充填部材、４２…シム、４２ａ…孔部、５０，１１０…締め付け部材、５１，１１１…ワッシャ、５２…ナット、６０…充填材、７０…突出部材、７１…板状部、７２…ネジ部、７３…ナット、８０，９０…型枠、９１…板状部、９２…凸部、１０１ｃ，１１１ａ…凹凸部、Ｄ１…橋軸方向、Ｄ２…橋軸直角方向、Ｄ３…鉛直方向、Ｋ１，Ｋ２…隙間、Ｓ…鉛直面、Ｔ…継手空間、θ１，θ２…傾斜角度。 DESCRIPTION OF SYMBOLS 1 ... Connection structure, 10 ... 1st precast floor slab, 11 ... 1st precast block, 11a ... upper surface, 11b ... 1st end surface, 11c ... lower surface, 12 ... 1st rebar, 12a ... protrusion part, 12b ... embedded part, DESCRIPTION OF SYMBOLS 20 ... 2nd precast floor slab, 21 ... 2nd precast block, 21a ... upper surface, 21b ... 2nd end surface, 21c ... lower surface, 22 ... 2nd rebar, 22a ... protrusion part, 22b ... embedded part, 30, 100 ... connection Members 31, 101: side plate portion, 31a: outer surface, 31b, 101b: inner surface, 31c: hole portion, 32: upper plate portion, 32a: upper surface, 32b: lower surface, 33: rib, 40: embedded member, 41: filling Members 42, shims 42, holes 42, 110, tightening members 51, 111 washers 52, nuts 60, fillers 70, protruding members 71, plate-like parts 72, screw parts 73 ... 80, 90: formwork, 91: plate-like portion, 92: convex portion, 101c, 111a: uneven portion, D1: direction of bridge axis, D2: direction perpendicular to bridge axis, D3: vertical direction, K1, K2: Clearance, S: vertical plane, T: joint space, θ1, θ2: inclination angle.

Claims (9)

第１プレキャスト床版と第２プレキャスト床版とを連結部材を介して連結する連結構造であって、
前記第１プレキャスト床版は、前記第２プレキャスト床版に対向する第１端面を有する第１プレキャストブロックと、前記第１プレキャストブロックに埋め込まれると共に前記第１端面から突出する第１鉄筋と、を備え、
前記第２プレキャスト床版は、前記第１端面に対向する第２端面を有する第２プレキャストブロックと、前記第２プレキャストブロックに埋め込まれると共に前記第２端面から突出する第２鉄筋と、を備え、
前記第１端面及び前記第２端面は、共に、鉛直下方に向かうに従って互いに突出する方向に傾斜しており、
前記連結部材は、
前記第１端面及び前記第２端面のそれぞれに対向すると共に、前記第１鉄筋及び前記第２鉄筋のそれぞれが通される孔部を備えた一対の側板部と、
前記一対の側板部の上端同士を連結すると共に、前記第１プレキャスト床版の上面、及び前記第２プレキャスト床版の上面と連続するように設けられる上板部と、を有する、
連結構造。 A connecting structure for connecting a first precast floor slab and a second precast floor slab via a connecting member,
The first precast floor slab includes a first precast block having a first end face opposite to the second precast floor slab, and a first reinforcing bar embedded in the first precast block and projecting from the first end face Equipped
The second precast floor slab includes a second precast block having a second end face opposite to the first end face, and a second reinforcing bar embedded in the second precast block and projecting from the second end face.
The first end face and the second end face are both inclined in the direction in which they project toward each other as they go vertically downward,
The connecting member is
A pair of side plate parts provided with a hole which faces each of the first end face and the second end face and through which the first reinforcing bar and the second reinforcing bar pass.
An upper plate portion connected to the upper ends of the pair of side plate portions and provided so as to be continuous with the upper surface of the first precast floor plate and the upper surface of the second precast floor plate.
Connected structure. 前記一対の側板部と前記上板部とによって囲まれた領域に充填される充填材を備える、
請求項１に記載の連結構造。 And a filler filled in a region surrounded by the pair of side plate portions and the upper plate portion.
The connection structure according to claim 1. 前記一対の側板部のそれぞれにおいて、前記第１鉄筋及び前記第２鉄筋のそれぞれを締め付ける締め付け部材を備える、
請求項１又は２に記載の連結構造。 In each of the pair of side plate portions, a fastening member for fastening each of the first reinforcing bar and the second reinforcing bar is provided.
The connection structure according to claim 1 or 2. 前記側板部と前記第１端面との間の隙間、及び前記側板部と前記第２端面との間の隙間に埋め込まれる埋め込み部材を備える、
請求項１〜３のいずれか一項に記載の連結構造。 And an embedding member embedded in a gap between the side plate portion and the first end surface, and a gap between the side plate portion and the second end surface.
The connection structure according to any one of claims 1 to 3. 前記上板部の下面、及び各前記側板部の内面から突出するリブを備える、
請求項１〜４のいずれか一項に記載の連結構造。 A lower surface of the upper plate portion and a rib protruding from an inner surface of each of the side plate portions;
The connection structure as described in any one of Claims 1-4. 第１プレキャスト床版と第２プレキャスト床版とを連結部材を介して連結する連結方法であって、
前記第１プレキャスト床版は、前記第２プレキャスト床版に対向する第１端面を有する第１プレキャストブロックと、前記第１プレキャストブロックに埋め込まれると共に前記第１端面から突出する第１鉄筋と、を備え、
前記第２プレキャスト床版は、前記第１端面に対向する第２端面を有する第２プレキャストブロックと、前記第２プレキャストブロックに埋め込まれると共に前記第２端面から突出する第２鉄筋と、を備え、
前記第１端面及び前記第２端面が共に鉛直下方に向かうに従って互いに突出する方向に傾斜するように前記第１プレキャスト床版及び前記第２プレキャスト床版を配置する工程と、
前記連結部材の一対の側板部のそれぞれを前記第１端面及び前記第２端面のそれぞれに対向させると共に前記第１鉄筋及び前記第２鉄筋のそれぞれを前記側板部の孔部に通し、前記連結部材の上板部が前記第１プレキャスト床版の上面及び前記第２プレキャスト床版の上面と連続するように、前記連結部材を配置する工程と、
を備える連結方法。 A connecting method for connecting a first precast floor slab and a second precast floor slab via a connecting member,
The first precast floor slab includes a first precast block having a first end face opposite to the second precast floor slab, and a first reinforcing bar embedded in the first precast block and projecting from the first end face Equipped
The second precast floor slab includes a second precast block having a second end face opposite to the first end face, and a second reinforcing bar embedded in the second precast block and projecting from the second end face.
Arranging the first precast floor slab and the second precast floor slab such that the first end face and the second end face are inclined in the direction in which the first end face and the second end face project downward as they both go vertically downward;
Each of the pair of side plates of the connecting member is made to face each of the first end face and the second end face, and each of the first reinforcing bar and the second reinforcing bar is passed through the hole of the side plate, Arranging the connecting member such that the upper plate portion of the second continuous member is continuous with the upper surface of the first precast floor plate and the upper surface of the second precast floor plate;
Connection method comprising: 前記一対の側板部と前記上板部とによって囲まれた領域に充填材を充填する工程を備える、
請求項６に記載の連結方法。 Filling the filler in a region surrounded by the pair of side plate portions and the upper plate portion;
The connection method according to claim 6. 前記一対の側板部のそれぞれにおいて、前記第１鉄筋及び前記第２鉄筋のそれぞれを締め付け部材によって締め付ける工程を備える、
請求項６又は７に記載の連結方法。 In each of the pair of side plate portions, the step of tightening each of the first reinforcing bar and the second reinforcing bar by a tightening member
The connection method according to claim 6 or 7. 前記側板部と前記第１端面との間の隙間、及び前記側板部と前記第２端面との間の隙間に埋め込み部材を埋め込む工程を備える、
請求項６〜８のいずれか一項に記載の連結方法。 Embedding a embedding member in a gap between the side plate portion and the first end surface and a gap between the side plate portion and the second end surface;
The connection method as described in any one of Claims 6-8.
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Publication number Priority date Publication date Assignee Title
JP7499735B2 (en) 2020-06-01 2024-06-14 鹿島建設株式会社 Deck installation structure and deck installation method

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JPS6070616U (en) * 1983-10-19 1985-05-18 石川島建材工業株式会社 Connection structure of brake cast concrete floor slab
JP2002227130A (en) * 2001-02-05 2002-08-14 Dps Bridge Works Co Ltd Connecting structure for concrete member
JP2005282272A (en) * 2004-03-30 2005-10-13 Ishikawajima Constr Materials Co Ltd Construction method for replacing floor slab of composite girder, and device for transferring axial force between floor slabs

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JPS6070616U (en) * 1983-10-19 1985-05-18 石川島建材工業株式会社 Connection structure of brake cast concrete floor slab
JP2002227130A (en) * 2001-02-05 2002-08-14 Dps Bridge Works Co Ltd Connecting structure for concrete member
JP2005282272A (en) * 2004-03-30 2005-10-13 Ishikawajima Constr Materials Co Ltd Construction method for replacing floor slab of composite girder, and device for transferring axial force between floor slabs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7499735B2 (en) 2020-06-01 2024-06-14 鹿島建設株式会社 Deck installation structure and deck installation method

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