JP7210237B2 - Concrete member connection structure and precast concrete member connection method - Google Patents

Concrete member connection structure and precast concrete member connection method Download PDF

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JP7210237B2
JP7210237B2 JP2018214446A JP2018214446A JP7210237B2 JP 7210237 B2 JP7210237 B2 JP 7210237B2 JP 2018214446 A JP2018214446 A JP 2018214446A JP 2018214446 A JP2018214446 A JP 2018214446A JP 7210237 B2 JP7210237 B2 JP 7210237B2
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真 池田
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ジオスター株式会社
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Description

本発明は、例えばプレキャストコンクリート部材同士や、プレキャストコンクリート部材と他のコンクリート部材とを連結させるために用いられる鉄筋連結用継手、当該鉄筋連結用継手を用いて構成される鉄筋連結用継手構造、及び当該鉄筋連結用継手を用いるプレキャストコンクリート部材の連結方法に関する。 The present invention provides, for example, a reinforcing bar connecting joint used for connecting precast concrete members to each other or a precast concrete member and another concrete member, a reinforcing bar connecting joint structure configured using the reinforcing bar connecting joint, and The present invention relates to a method for connecting precast concrete members using the joint for connecting reinforcing bars.

現代の都市において、ビルなどの構造物や、各種地下構造物等を建築する場合に、工場などで予め製作されたコンクリート製の部材を現場に搬入し、部材同士を組み合わせる方法や既設部材に組み付けるといった方法で柱や梁を構成するといった技術が知られている。このような予め製作されたコンクリート製の部材は「プレキャストコンクリート部材」や「プレキャスト部材」と呼称される。このプレキャスト部材は、例えばプレキャスト部材と他の部材を連結させるための鉄筋を突出させた構成で製作される。 In modern cities, when constructing structures such as buildings and various underground structures, concrete members that have been manufactured in advance at a factory or the like are brought to the site, and the method is to combine the members or assemble them to the existing members. Techniques for constructing pillars and beams by such methods are known. Such prefabricated concrete members are referred to as "precast concrete members" or "precast members". This precast member is manufactured, for example, in a configuration in which reinforcing bars are protruded for connecting the precast member and other members.

プレキャストコンクリート部材を用いた工法の一例として、例えば特許文献１には、プレキャスト部材と既設部材との間の接合において、施工誤差や製造誤差に影響されることなく、連結を行うことができる接合構造が開示されている。また、例えば特許文献２には、プレキャスト部材と他のコンクリート部材との間隔を小さくすると共に、施工の手間を低減させるような接合構造が開示されている。 As an example of a construction method using precast concrete members, for example, Patent Document 1 discloses a joint structure that can connect precast members and existing members without being affected by construction errors or manufacturing errors. is disclosed. Further, for example, Patent Literature 2 discloses a joint structure that reduces the distance between a precast member and another concrete member and reduces the labor for construction.

特開２０１０－６５４１７号公報JP 2010-65417 A 特開２０１７－１９０６２９号公報JP 2017-190629 A

上記特許文献１に記載の技術は、プレキャスト部材と既設部材との間の接合に関する技術であり、部材接合端部において凹部を形成し、当該凹部内部の箱体に各部材の鉄筋（主筋）端部を対向した状態で配置し、その状態で接着剤を介在させることで連結を行っている。また、上記特許文献２に記載の技術は、プレキャスト部材と他のコンクリート部材との間の接合に関する技術であり、接合部に筒状部材を設け、当該筒状部材の内部に各部材の鉄筋（主筋）端部を対向した状態で配置し、その状態で充填材を充填させることで連結を行っている。 The technique described in Patent Document 1 is a technique related to joining between a precast member and an existing member, in which a concave portion is formed at the member joint end, and the reinforcing bar (main bar) end of each member is placed in the box inside the concave portion. The parts are arranged facing each other and connected by interposing an adhesive in that state. In addition, the technique described in Patent Document 2 is a technique related to joining between a precast member and another concrete member. The main reinforcing bars are arranged in a state of facing each other, and are connected by filling the filler material in that state.

しかしながら、上記特許文献１では、凹部を形成し、箱体の内部に１対の鉄筋先端部を収容する構成を採っており、また、上記特許文献２では、筒状部材を設け、当該筒状内部に１対の鉄筋先端部を収容する構成を採っているため、施工の煩雑化が懸念され、更なる効率化の余地がある。特に、上記特許文献１、２の技術では、対向する１本ずつ（１対）の鉄筋（主筋）同士を接合させる構成としており、例えば、複数対の鉄筋を互いに対向した状態で接合させる際の施工効率化等には言及がされていない。現代の構造物においてプレキャスト部材を用いて部材の組み付け等を行う場合、プレキャスト部材に複数対の鉄筋が取り付けられている構成が多々あり、部材間でそれら複数対の鉄筋同士を対向させて接合させる際に接合部の安定化や、施工の更なる効率化が求められている。 However, in Patent Document 1, a concave portion is formed and a configuration is adopted in which a pair of reinforcing bar tip portions are accommodated inside the box. Since it is configured to accommodate a pair of rebar tips inside, there is a concern that the construction will be complicated, and there is room for further efficiency improvement. In particular, the techniques of Patent Documents 1 and 2 are configured to join opposing reinforcing bars (main bars) one by one (one pair). For example, when joining a plurality of pairs of reinforcing bars facing each other No mention is made of construction efficiency. When assembling members using precast members in modern structures, there are many configurations in which multiple pairs of reinforcing bars are attached to the precast members, and these multiple pairs of reinforcing bars are opposed and joined between members. In some cases, the stabilization of joints and the further efficiency of construction are required.

上記事情に鑑み、本発明の目的は、プレキャストコンクリート部材の鉄筋同士を効率的に接合させることが可能であり、特に、対向する複数対の鉄筋の先端部同士を効率的にまとめて接合することが可能なコンクリート部材の連結構造及びプレキャストコンクリート部材の連結方法を提供することにある。
In view of the above circumstances, an object of the present invention is to enable efficient joining of rebars of precast concrete members, and in particular, to efficiently join the tips of a plurality of pairs of opposing rebars together. To provide a connecting structure of concrete members and a method of connecting precast concrete members.

前記の目的を達成するため、本発明によれば、一対のコンクリート部材を鉄筋及び鉄筋継手を介して連結する連結構造であって、前記鉄筋継手は、互いに離間して並設された２枚のフランジ部材と、前記２枚のフランジ部材を連結させるウェブ部材と、を有し、前記２枚のフランジ部材間において、前記２枚のフランジ部材と前記ウェブ部材により三面を囲まれた空間である２つの鉄筋収容部が構成され、一方の前記鉄筋収容部には一方の前記コンクリート部材から突出する１又は複数の鉄筋を収容し、他方の前記鉄筋収容部には他方の前記コンクリート部材から突出する１又は複数の鉄筋を収容し、前記鉄筋収容部を含む前記一対のコンクリート部材の間隙部には硬化材が充填され、前記鉄筋及び前記鉄筋継手全体を埋設していることを特徴とする、コンクリート部材の連結構造が提供される。
In order to achieve the above object, according to the present invention, there is provided a connection structure for connecting a pair of concrete members via a reinforcing bar and a reinforcing bar joint, wherein the reinforcing bar joint is two pieces arranged side by side with a space therebetween. 2, which has a flange member and a web member that connects the two flange members, and is a space surrounded on three sides by the two flange members and the web member between the two flange members; One of the reinforcing bar accommodating portions accommodates one or a plurality of reinforcing bars protruding from one of the concrete members, and the other reinforcing bar accommodating portion accommodates one protruding from the other concrete member. Alternatively, a plurality of reinforcing bars are accommodated, a hardening material is filled in a gap between the pair of concrete members including the reinforcing bar accommodating portion, and the reinforcing bars and the reinforcing bar joint are entirely buried. is provided .

前記２枚のフランジ部材及び前記ウェブ部材は平鋼板であり、前記ウェブ部材は、前記２枚のフランジ部材のフランジ幅方向中央部近傍において当該フランジ部材同士を連結させるように設けられ、断面形状が略Ｈ形形状であっても良い。 The two flange members and the web member are flat steel plates, and the web member is provided so as to connect the flange members near the central portion in the flange width direction of the two flange members, and has a cross-sectional shape. It may be substantially H-shaped.

前記２枚のフランジ部材は、断面形状が略Ｌ字の形鋼であり、前記ウェブ部材は、前記２枚のフランジ部材の屈曲部同士を連結するように設けられても良い。 The two flange members may be shaped steel having a substantially L-shaped cross section, and the web member may be provided so as to connect the bent portions of the two flange members.

前記フランジ部材には、当該フランジ部材のフランジ幅方向端部において、前記鉄筋収容部方向に張り出す張り出し部材が設けられても良い。 The flange member may be provided with a projecting member projecting in the direction of the reinforcing bar accommodating portion at an end portion in the flange width direction of the flange member.

前記２つの鉄筋収容部各々には、鉄筋収容時に、貫通穴を通じて前記鉄筋を貫通させる貫通プレートが配置されても良い。 A penetrating plate may be arranged in each of the two reinforcing-bar accommodating portions for allowing the reinforcing bars to penetrate through the through-holes when the reinforcing bars are accommodated.

また、本発明によれば、上記記載のコンクリート部材の連結構造を用いプレキャストコンクリート部材同士、又は、プレキャストコンクリート部材と他のコンクリート部材とを連結させるプレキャストコンクリート部材の連結方法であって、前記プレキャストコンクリート部材及び他のコンクリート部材を、連結させるための鉄筋を突出させた状態で製造し、前記プレキャストコンクリート部材及び他のコンクリート部材を連結すべき所定の位置に配置し、前記鉄筋が前記鉄筋収容部に収容されるように鉄筋連結用継手を配置し、前記鉄筋収容部、及び、前記プレキャストコンクリート部材同士間、又は、プレキャストコンクリート部材と他のコンクリート部材との間の間隙部に硬化材を充填することを特徴とする、プレキャストコンクリート部材の連結方法が提供される。
Further, according to the present invention, there is provided a method for connecting precast concrete members for connecting precast concrete members to each other or connecting a precast concrete member to another concrete member using the connecting structure for concrete members described above, the method comprising: A member and another concrete member are manufactured in a state in which a reinforcing bar for connection is protruding, the precast concrete member and the other concrete member are arranged at a predetermined position to be connected, and the reinforcing bar is placed in the reinforcing bar accommodation part. arranging a reinforcing bar connection joint so as to be accommodated therein, and filling a hardening material in the reinforcing bar accommodating portion and the gap between the precast concrete members or between the precast concrete member and another concrete member; A method for connecting precast concrete members is provided, characterized by:

本発明によれば、プレキャストコンクリート部材の鉄筋同士を効率的に接合させることが可能であり、特に、対向する複数対の鉄筋の先端部同士を効率的にまとめて接合することが可能なコンクリート部材の連結構造及びプレキャストコンクリート部材の連結方法が提供される。
ADVANTAGE OF THE INVENTION According to the present invention, it is possible to efficiently join reinforcing bars of a precast concrete member to each other, and in particular, a concrete member capable of efficiently joining the tip portions of a plurality of pairs of opposing reinforcing bars together. A connection structure and method for connecting precast concrete members are provided.

第１実施の形態に係る鉄筋連結用継手構造の概略説明図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic explanatory drawing of the joint structure for reinforcing-bar connection which concerns on 1st Embodiment. 第１実施の形態に係る鉄筋連結用継手構造の概略断面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic sectional drawing of the joint structure for reinforcement connection which concerns on 1st Embodiment. 第１実施の形態に係る鉄筋連結用継手構造の概略断面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic sectional drawing of the joint structure for reinforcement connection which concerns on 1st Embodiment. 第２実施形態に係る鉄筋連結用継手構造の概略断面図である。It is a schematic sectional drawing of the joint structure for reinforcement connection which concerns on 2nd Embodiment. 第３実施形態に係る鉄筋連結用継手構造の概略断面図である。It is a schematic sectional drawing of the joint structure for reinforcement connection which concerns on 3rd Embodiment. 貫通プレートの概略図である。FIG. 2 is a schematic diagram of a penetrating plate; 本発明の変形例に係る鉄筋連結用継手構造の概略断面図である。It is a schematic sectional drawing of the joint structure for reinforcement connection which concerns on the modification of this invention.

以下、本発明の実施の形態について図面を参照して説明する。なお、本明細書および図面において、実質的に同一の機能構成を有する構成要素については、同一の符号を付することにより重複説明を省略する場合がある。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present specification and drawings, constituent elements having substantially the same functional configuration may be denoted by the same reference numerals, thereby omitting redundant description.

（本発明の第１実施形態に係る鉄筋連結用継手構造）
図１は本発明の第１実施形態に係る鉄筋連結用継手構造１の概略説明図である。図１では、簡略化のためプレキャストコンクリート部材は図示せず、プレキャストコンクリート部材から突出する複数の鉄筋が対向している状態を、当該鉄筋の先端部に注視して図示している。また、対向する複数対の鉄筋の数の一例として、３本の鉄筋が各々その先端部同士を突き合わせた状態を図示している。 (Reinforcing bar connection joint structure according to the first embodiment of the present invention)
FIG. 1 is a schematic explanatory diagram of a reinforcing bar connection joint structure 1 according to a first embodiment of the present invention. In FIG. 1, the precast concrete member is not shown for the sake of simplification, and the state in which a plurality of reinforcing bars protruding from the precast concrete member face each other is shown by focusing on the tip portions of the reinforcing bars. Also, as an example of the number of pairs of reinforcing bars facing each other, a state in which three reinforcing bars are butted against each other is shown.

図１に示すように、鉄筋連結用継手構造１においては、互いに対向する複数対の鉄筋、即ち、一方の鉄筋３と他方の鉄筋４が、当該鉄筋３、４の先端部３ａ、４ａ同士を突き合わせた状態で配置される。先端部３ａと４ａは所定の間隔でもって離間しており、一方の鉄筋３と他方の鉄筋４との間には鉄筋連結用継手（以下、単に継手部材とも呼称）１０が配置される。 As shown in FIG. 1 , in the reinforcing bar connection joint structure 1 , a plurality of pairs of reinforcing bars facing each other, that is, one reinforcing bar 3 and the other reinforcing bar 4 are connected to each other by connecting the tips 3 a and 4 a of the reinforcing bars 3 and 4 together. placed in abutted state. The tip portions 3a and 4a are separated by a predetermined distance, and a reinforcing bar connecting joint (hereinafter also simply referred to as a joint member) 10 is arranged between one reinforcing bar 3 and the other reinforcing bar 4.

継手部材１０は、断面が略Ｈ形形状である長尺部材であり、互いに平行に離間して並設された２枚の平鋼板であるフランジ部材１２（１２ａ、１２ｂ）と、それらフランジ部材１２ａ、１２ｂを連結する平鋼板であるウェブ部材１５からなる。ウェブ部材１５は、例えば２枚のフランジ部材１２ａ、１２ｂのフランジ幅方向中央部近傍において互いを連結するように設けられている。これにより、２枚のフランジ部材１２ａ、１２ｂ間の空間は、ウェブ部材１５によって分断され、略溝型形状の断面を有する２つの空間に仕切られている。この２枚のフランジ部材１２ａ、１２ｂとウェブ部材１５により三面を囲まれた略溝型断面の空間（溝状空間）には、図示のように鉄筋３、４の先端部３ａ、４ａを収容することができ、当該空間は一対の鉄筋収容部２０ａ、２０ｂ（２０）として機能する。 The joint member 10 is a long member having a substantially H-shaped cross section, and includes flange members 12 (12a, 12b), which are two flat steel plates arranged parallel to each other with a space therebetween, and the flange members 12a. , 12b. The web member 15 is provided so as to connect the two flange members 12a and 12b, for example, in the vicinity of the central portion in the flange width direction. As a result, the space between the two flange members 12a and 12b is divided by the web member 15 and partitioned into two spaces having substantially groove-shaped cross sections. The space (groove space) with a substantially groove-shaped cross section surrounded on three sides by the two flange members 12a and 12b and the web member 15 accommodates the tips 3a and 4a of the reinforcing bars 3 and 4 as shown in the figure. , and the space functions as a pair of reinforcing bar housing portions 20a, 20b (20).

また、図２は鉄筋連結用継手構造１の概略断面図であり、プレキャスト部材から鉄筋が突出している構成での継手構造を示す概略図である。また、図３は鉄筋連結用継手構造１の概略断面図であり、プレキャスト部材に凹部が形成され、当該凹部内において鉄筋が突出している構成での継手構造を示す概略図である。
なお、図示のようなプレキャスト部材は、連結を施工するための鉄筋を予め部材外部に突出させた状態で製造されるのが一般的である。 Moreover, FIG. 2 is a schematic cross-sectional view of the joint structure 1 for connecting reinforcing bars, and is a schematic view showing the joint structure in a configuration in which the reinforcing bars protrude from the precast member. FIG. 3 is a schematic cross-sectional view of the joint structure 1 for connecting reinforcing bars, and is a schematic view showing a joint structure in which a recess is formed in the precast member and the reinforcing bar protrudes in the recess.
It should be noted that the precast member shown in the figure is generally manufactured in a state in which reinforcing bars for connection are protruded from the outside of the member in advance.

図２に示す構成では、一対の（図中上下の）プレキャスト部材３０（３０ａ、３０ｂ）が所定の位置に配置され、その端部から突出した鉄筋３、４において、その先端部３ａ、４ａが鉄筋収容部２０ａ、２０ｂに収容されるように継手部材１０が配置される。プレキャスト部材３０ａと３０ｂを組み付ける場合には、鉄筋収容部２０ａ、２０ｂの内部空間及びその周囲に図示のように硬化材Ｂが充填される。硬化材Ｂの充填時は、例えば型枠３２（図中破線部）を一時的に配置し、閉じた空間を作製し、当該型枠３２の内部空間内に硬化材Ｂを注入させることで行われる。なお、硬化材Ｂは、経時的に硬化する流動性の材料であれば良く、例えば、グラウト、セメント、モルタルなどが挙げられる。 In the configuration shown in FIG. 2, a pair of (upper and lower in the figure) precast members 30 (30a, 30b) are arranged at predetermined positions, and the tip portions 3a, 4a of the reinforcing bars 3, 4 protruding from the ends thereof are The joint member 10 is arranged so as to be accommodated in the reinforcing bar accommodation portions 20a and 20b. When the precast members 30a and 30b are assembled, the inner space of the reinforcing bar accommodating portions 20a and 20b and their surroundings are filled with a hardening material B as shown. At the time of filling the hardening material B, for example, the formwork 32 (broken line portion in the figure) is temporarily placed to create a closed space, and the hardening material B is injected into the internal space of the formwork 32 . will be The hardening material B may be any fluid material that hardens over time, and examples thereof include grout, cement, and mortar.

図３に示す構成では、一対の（図中上下の）凹部を有するプレキャスト部材４０（４０ａ、４０ｂ）が所定の位置に配置され、対向した状態の凹部内において鉄筋３、４が互いに対向して突出している。プレキャスト部材４０ａ、４０ｂの凹部を対向させることで、部材間の間隙部として、凹部による空間Ｕが構成され、この空間Ｕにおいて鉄筋３、４の先端部３ａ、４ａが鉄筋収容部２０ａ、２０ｂに収容されるように継手部材１０が配置される。プレキャスト部材４０ａと４０ｂを組み付ける場合には、鉄筋収容部２０ａ、２０ｂ、及び、空間Ｕ内に図示のように硬化材Ｂが充填される。 In the configuration shown in FIG. 3, precast members 40 (40a, 40b) having a pair of recesses (upper and lower in the figure) are arranged at predetermined positions, and the reinforcing bars 3 and 4 are placed in opposing recesses. Protruding. By facing the recesses of the precast members 40a and 40b, a space U is formed by the recesses as a gap between the members. A joint member 10 is arranged to be accommodated. When assembling the precast members 40a and 40b, the reinforcing bar accommodating portions 20a and 20b and the space U are filled with a hardening material B as shown.

図１～３を参照して説明した鉄筋連結用継手構造１によれば、継手部材１０に長尺部材を用い、鉄筋収容部２０ａ、２０ｂに２つのプレキャスト部材から突出する鉄筋３、４をそれぞれ収容した状態で接合を行うことで、効率的な接合が実現される。特に、図１に示すように複数対の鉄筋３、４をまとめて鉄筋収容部２０ａ、２０ｂに収容させ、そこに硬化材Ｂを充填するといった構成を採ることで、１つの継手部材１０で複数対の鉄筋３、４をまとめて接合させることができ、接合の安定化や施工の効率化が実現される。 According to the reinforcing-bar connecting joint structure 1 described with reference to FIGS. Efficient bonding is realized by performing bonding in the housed state. In particular, as shown in FIG. 1, a plurality of pairs of reinforcing bars 3 and 4 are collectively housed in the reinforcing bar housing portions 20a and 20b, and the hardening material B is filled therein. The pair of reinforcing bars 3 and 4 can be jointed collectively, and the stabilization of joint and efficiency improvement of construction are realized.

（本発明の第２実施形態に係る鉄筋連結用継手構造）
図４は本発明の第２実施形態に係る鉄筋連結用継手構造１ａの概略断面図であり、プレキャスト部材に凹部が形成され、当該凹部内において鉄筋が突出している構成での継手構造を示す概略図である。なお、図４では、上記第１実施形態で説明した鉄筋連結用継手構造１と同じ機能構成を有する構成要素については同一の符号を付して図示し、その説明は省略する場合がある。 (Reinforcing bar connection joint structure according to the second embodiment of the present invention)
FIG. 4 is a schematic cross-sectional view of a reinforcing bar connection joint structure 1a according to a second embodiment of the present invention, which schematically shows a joint structure in which a recess is formed in a precast member and a reinforcing bar protrudes in the recess. It is a diagram. In addition, in FIG. 4, constituent elements having the same function and configuration as those of the reinforcing-bar connection joint structure 1 described in the first embodiment are indicated by the same reference numerals, and description thereof may be omitted.

図４に示すように、鉄筋連結用継手構造１ａにおいては、２枚のフランジ部材１２ａ、１２ｂのそれぞれにおいて、フランジ幅方向両端部に鉄筋収容部２０ａ、２０ｂ方向（断面視で略Ｈ形の内側方向）に張り出す張り出し部材５０が設けられている。この張り出し部材５０を備えた構成によれば、上記第１実施形態で説明した作用効果に加え、硬化材Ｂの硬化後、プレキャスト部材４０ａ、４０ｂに対し外力、例えば鉄筋３、４を離間させるような力がかかった場合に、当該力に対する張り出し部材５０による反力が働くため、プレキャスト部材４０ａと４０ｂの連結がより強固となる。 As shown in FIG. 4, in the reinforcing-bar connecting joint structure 1a, two flange members 12a and 12b are provided at both ends in the width direction of the flange in the direction of the reinforcing-bar accommodating portions 20a and 20b (the inner side of the substantially H-shaped cross section). direction) is provided. According to the configuration including the projecting member 50, in addition to the effects described in the first embodiment, after the hardening material B is hardened, an external force, such as the reinforcing bars 3 and 4, is moved away from the precast members 40a and 40b. When a force is applied, the projecting member 50 reacts to the force, so that the connection between the precast members 40a and 40b becomes stronger.

（本発明の第３実施形態に係る鉄筋連結用継手構造）
図５は本発明の第３実施形態に係る鉄筋連結用継手構造１ｂの概略断面図であり、プレキャスト部材に凹部が形成され、当該凹部内において鉄筋が突出している構成での継手構造を示す概略図である。なお、図５では、上記第１実施形態で説明した鉄筋連結用継手構造１と同じ機能構成を有する構成要素については同一の符号を付して図示し、その説明は省略する場合がある。 (Reinforcing bar connection joint structure according to the third embodiment of the present invention)
FIG. 5 is a schematic cross-sectional view of a reinforcing bar connection joint structure 1b according to a third embodiment of the present invention, which schematically shows a joint structure in which a recess is formed in a precast member and a reinforcing bar protrudes in the recess. It is a diagram. In addition, in FIG. 5, constituent elements having the same function and configuration as those of the reinforcing-bar connection joint structure 1 described in the first embodiment are denoted by the same reference numerals, and description thereof may be omitted.

図５に示すように、鉄筋連結用継手構造１ｂにおいては、鉄筋収容部２０ａ、２０ｂの内部において、継手部材１０長手方向に延伸する板状の部材が配置されている。この部材には、鉄筋３、４を貫通させるための貫通穴が設けられており、ここでは貫通プレート６０と呼称する。図６は貫通プレート６０の概略図である。図６に示すように、貫通プレート６０には、鉄筋３、４を貫通させるための貫通穴６５が１又は複数箇所（図６では３箇所）に設けられている。 As shown in FIG. 5, in the reinforcing bar connection joint structure 1b, plate-like members extending in the longitudinal direction of the joint member 10 are arranged inside the reinforcing bar accommodating portions 20a and 20b. This member is provided with through holes for penetrating the reinforcing bars 3 and 4, and is called a through plate 60 here. FIG. 6 is a schematic diagram of the penetrating plate 60 . As shown in FIG. 6, the penetration plate 60 is provided with one or a plurality of through holes 65 (three in FIG. 6) for the reinforcing bars 3 and 4 to pass through.

貫通プレート６０に設けられる貫通穴６５の数や配置は任意であるが、施工するプレキャスト部材４０に取り付けられた鉄筋３、４の本数や位置構成に基づき設計することが望ましい。また、図５に示すように、鉄筋３、４の端部には、鉄筋本体より径の大きな傘部（抜け止め部）６２が形成されている場合がある。このような構成では、貫通プレート６０の貫通穴６５の径は傘部６２の径より大きく設計されることが好ましい。 Although the number and arrangement of the through holes 65 provided in the through plate 60 are arbitrary, it is desirable to design them based on the number and positional configuration of the reinforcing bars 3 and 4 attached to the precast member 40 to be constructed. Moreover, as shown in FIG. 5, the ends of the reinforcing bars 3 and 4 may be formed with caps (retaining portions) 62 having a larger diameter than the main body of the reinforcing bars. In such a configuration, the diameter of the through hole 65 of the through plate 60 is preferably designed to be larger than the diameter of the head portion 62 .

このような、図５に示す貫通プレート６０を備えた構成の鉄筋連結用継手構造１ｂの施工工程としては、空間Ｕにおいて予め鉄筋３、４が貫通穴６５を通った状態で貫通プレート６０を配置しておき、その状態で継手部材１０を空間Ｕに長尺方向でもって挿入し、挿入完了後に硬化材Ｂを充填させるといった工程が好ましい。このように構成される鉄筋連結用継手構造１ｂによれば、上記第１実施形態で説明した作用効果に加え、硬化材Ｂの硬化後、プレキャスト部材４０ａ、４０ｂに対し外力、例えば鉄筋３、４を離間させるような力がかかった場合に、当該力に対する貫通プレート６０による反力が働くため、プレキャスト部材４０ａと４０ｂの連結がより強固となる。 As a construction process of the joint structure 1b for reinforcing bar connection having such a configuration including the through plate 60 shown in FIG. In this state, the joint member 10 is inserted into the space U in the longitudinal direction, and the hardening material B is filled after the insertion is completed. According to the reinforcing-bar connecting joint structure 1b configured in this way, in addition to the effects described in the first embodiment, after the hardening material B hardens, the precast members 40a and 40b are subjected to an external force such as the reinforcing bars 3 and 4. When a force is applied to separate the precast members 40a and 40b, the penetration plate 60 reacts to the force, so that the connection between the precast members 40a and 40b becomes stronger.

以上、本発明の実施の形態の一例を説明したが、本発明は図示の形態に限定されない。当業者であれば、特許請求の範囲に記載された思想の範疇内において、各種の変形例または修正例に想到し得ることは明らかであり、それらについても当然に本発明の技術的範囲に属するものと了解される。 Although an example of the embodiment of the present invention has been described above, the present invention is not limited to the illustrated form. It is obvious that a person skilled in the art can conceive various modifications or modifications within the scope of the idea described in the claims, and these naturally belong to the technical scope of the present invention. understood as a thing.

（本発明の変形例）
上記実施の形態では、継手部材１０はフランジ部材１２とウェブ部材１５からなり、その断面形状は略Ｈ形形状であるとの説明をしたが、継手部材１０の形状はこれに限られるものではない。例えば、２枚のフランジ部材の断面形状は略Ｌ字形状でも良い。以下、本発明の変形例について図面を参照して説明する。 (Modification of the present invention)
In the above embodiment, the joint member 10 is composed of the flange member 12 and the web member 15, and has a substantially H-shaped cross section. However, the shape of the joint member 10 is not limited to this. . For example, the cross-sectional shape of the two flange members may be substantially L-shaped. Modifications of the present invention will be described below with reference to the drawings.

図７は、本発明の変形例に係る鉄筋連結用継手構造１ｃの概略断面図であり、プレキャスト部材から鉄筋が突出している構成での継手構造を示す概略図である。図７では、上記第１実施形態で説明した鉄筋連結用継手構造１と同じ機能構成を有する構成要素については同一の符号を付して図示し、その説明は省略する場合がある。 FIG. 7 is a schematic cross-sectional view of a reinforcing bar connection joint structure 1c according to a modification of the present invention, and is a schematic view showing a joint structure in which reinforcing bars protrude from a precast member. In FIG. 7, constituent elements having the same function and configuration as those of the reinforcing-bar connection joint structure 1 described in the first embodiment are indicated by the same reference numerals, and description thereof may be omitted.

図７に示すように、鉄筋連結用継手構造１ｃは、互いに平行に離間して並設された２枚の略Ｌ字型の形鋼であるフランジ部材７０（７０ａ、７０ｂ）と、それらフランジ部材７０ａ、７０ｂを連結する平鋼板であるウェブ部材１５からなる。ウェブ部材１５は断面が略Ｌ字型のフランジ部材７０の屈曲部同士を連結するように設けられている。これにより、２枚のフランジ部材７０ａ、７０ｂ間の空間は、ウェブ部材１５によって分断され、２つの空間に仕切られる。この２枚のフランジ部材７０ａ、７０ｂとウェブ部材１５により三面を囲まれた空間には、図示のように鉄筋３、４の先端部３ａ、４ａを収容することができ、当該空間は一対の鉄筋収容部２０ａ、２０ｂ（２０）として機能する。 As shown in FIG. 7, the reinforcing bar joint structure 1c includes two substantially L-shaped steel flange members 70 (70a, 70b) arranged in parallel with each other and spaced apart from each other. It consists of a web member 15 which is a flat steel plate connecting 70a and 70b. The web member 15 is provided so as to connect bent portions of a flange member 70 having a substantially L-shaped cross section. As a result, the space between the two flange members 70a and 70b is separated by the web member 15 and partitioned into two spaces. The space surrounded on three sides by the two flange members 70a and 70b and the web member 15 can accommodate the tip portions 3a and 4a of the reinforcing bars 3 and 4 as shown in the drawing. It functions as the housing portions 20a and 20b (20).

このように構成される鉄筋連結用継手構造１ｃによれば、フランジ部材７０（７０ａ、７０ｂ）として断面形状が略Ｌ字型の形鋼を用いている。そのため、上記実施形態で説明した作用効果に加え、例えばプレキャスト部材３０（３０ａ、３０ｂ）を連結させる際に２つのプレキャスト部材３０（３０ａ、３０ｂ）の鉄筋３、４が直交するような位置関係でもって接合を行うことが可能となる。即ち、ビルなどの構造物を建築する際には、構造物の隅角部や曲線部等を構築するのに、２つのプレキャスト部材３０（３０ａ、３０ｂ）を連結させる必要があり、本変形例のような鉄筋連結用継手構造１ｃを用いた鉄筋同士の接合技術が有用である。 According to the reinforcing-bar connection joint structure 1c configured in this manner, a shaped steel having a substantially L-shaped cross section is used as the flange member 70 (70a, 70b). Therefore, in addition to the effects described in the above embodiment, for example, when connecting the precast members 30 (30a, 30b), the positional relationship is such that the reinforcing bars 3, 4 of the two precast members 30 (30a, 30b) are perpendicular to each other. Therefore, it becomes possible to perform joining. That is, when constructing a structure such as a building, it is necessary to connect two precast members 30 (30a, 30b) in order to construct corners, curved portions, etc. of the structure. A technique for joining reinforcing bars using the joint structure 1c for connecting reinforcing bars is useful.

なお、本変形例では、フランジ部材７０（７０ａ、７０ｂ）の断面形状が略Ｌ字型である場合を図示したが、フランジ部材断面形状は、鉄筋を接合させる際の構成に応じて好適に設計すれば良く、例えば断面形状が曲線形状であるようなフランジ部材や、略Ｌ字型であってもその屈曲角度が９０°でないようなフランジ部材も考えられる。 In this modified example, the flange member 70 (70a, 70b) has a substantially L-shaped cross-sectional shape. For example, a flange member having a curved cross-sectional shape, and a flange member having a substantially L-shaped but not bent angle of 90° are also conceivable.

また、上記実施の形態や変形例に説明した構成に加え、フランジ部材内壁に凹凸部を設けるといった構成も考えられる。即ち、硬化材Ｂを硬化させ、当該硬化材Ｂを介在させて鉄筋３、４同士を連結させた状態において、鉄筋３、４に対し当該鉄筋３、４を離間させるような力がかかる場合や、当該鉄筋３、４同士を押し付けるような力がかかる場合に、鉄筋３、４にかかった力を、凹凸部などを介して継手部材１０に効率的に伝達させることができるため、連結がより強固なものとなる。 In addition to the configurations described in the above embodiments and modifications, a configuration in which uneven portions are provided on the inner wall of the flange member is also conceivable. That is, in a state in which the hardening material B is hardened and the reinforcing bars 3 and 4 are connected to each other with the hardening material B interposed therebetween, a force is applied to the reinforcing bars 3 and 4 to separate the reinforcing bars 3 and 4. , when a force is applied to press the rebars 3 and 4 together, the force applied to the rebars 3 and 4 can be efficiently transmitted to the joint member 10 via the uneven portions, etc., so that the connection can be further improved. become strong.

なお、上記実施の形態や変形例では、鉄筋を備えたプレキャストコンクリート部材（プレキャスト部材）同士を組み付ける（連結・接合させる）場合を図示して説明したが、本発明の適用範囲はこれに限られるものではない。即ち、本発明は、プレキャスト部材と現場打コンクリート部材といった他の部材とを組み付ける場合にも当然有効であり、各部材から突出する鉄筋同士を効率的に連結・接合させるのに有効な技術である。 In the above embodiments and modifications, the case of assembling (connecting and joining) precast concrete members (precast members) provided with reinforcing bars has been illustrated and explained, but the scope of application of the present invention is limited to this. not a thing That is, the present invention is naturally effective when assembling other members such as precast members and cast-in-place concrete members, and is an effective technique for efficiently connecting and joining reinforcing bars protruding from each member. .

本発明は、コンクリート部材の連結構造及びプレキャストコンクリート部材の連結方法に適用可能である。
INDUSTRIAL APPLICABILITY The present invention is applicable to a connection structure of concrete members and a connection method of precast concrete members.

１、１ａ～１ｃ…鉄筋連結用継手構造
３、４…鉄筋
１０…継手部材
１２…フランジ部材
１５…ウェブ部材
２０…鉄筋収容部
３０…プレキャスト部材
３２…型枠
４０…（凹部を有する）プレキャスト部材
５０…張り出し部材
６０…貫通プレート
６２…傘部材
６５…貫通穴
７０…（Ｌ字型の）フランジ部材
Ｂ…硬化材
Ｕ…空間 DESCRIPTION OF SYMBOLS 1, 1a-1c... Joint structure for reinforcing-bar connection 3, 4... Reinforcement bar 10... Joint member 12... Flange member 15... Web member 20... Reinforcement-bar accommodating part 30... Precast member 32... Formwork 40... Precast member (having a recessed part) 50 Overhang member 60 Through plate 62 Umbrella member 65 Through hole 70 (L-shaped) flange member B Hardening material U Space

Claims (6)

一対のコンクリート部材を鉄筋及び鉄筋継手を介して連結する連結構造であって、
前記鉄筋継手は、
互いに離間して並設された２枚のフランジ部材と、
前記２枚のフランジ部材を連結させるウェブ部材と、を有し、
前記２枚のフランジ部材間において、前記２枚のフランジ部材と前記ウェブ部材により三面を囲まれた空間である２つの鉄筋収容部が構成され、
一方の前記鉄筋収容部には一方の前記コンクリート部材から突出する１又は複数の鉄筋を収容し、
他方の前記鉄筋収容部には他方の前記コンクリート部材から突出する１又は複数の鉄筋を収容し、
前記鉄筋収容部を含む前記一対のコンクリート部材の間隙部には硬化材が充填され、前記鉄筋及び前記鉄筋継手全体を埋設していることを特徴とする、コンクリート部材の連結構造。 A connection structure that connects a pair of concrete members via a reinforcing bar and a reinforcing bar joint,
The reinforcing bar joint is
two flange members spaced apart from each other and arranged side by side;
a web member connecting the two flange members;
Between the two flange members, two reinforcing bar accommodating portions are formed, which are spaces surrounded on three sides by the two flange members and the web member ,
One of the reinforcing bar accommodating portions accommodates one or a plurality of reinforcing bars protruding from one of the concrete members,
one or a plurality of reinforcing bars protruding from the other concrete member are accommodated in the other reinforcing bar accommodating portion;
A connecting structure of concrete members, wherein a hardening material is filled in a gap between the pair of concrete members including the reinforcing bar accommodating portion, and the reinforcing bar and the reinforcing bar joint are entirely embedded. 前記２枚のフランジ部材及び前記ウェブ部材は平鋼板であり、
前記ウェブ部材は、前記２枚のフランジ部材のフランジ幅方向中央部近傍において当該フランジ部材同士を連結させるように設けられ、
断面形状が略Ｈ形形状であることを特徴とする、請求項１に記載のコンクリート部材の連結構造。 The two flange members and the web member are flat steel plates,
The web member is provided so as to connect the two flange members in the vicinity of the central portion in the flange width direction of the two flange members,
2. The connecting structure of concrete members according to claim 1, wherein the cross-sectional shape is substantially H-shaped. 前記２枚のフランジ部材は、断面形状が略Ｌ字の形鋼であり、
前記ウェブ部材は、前記２枚のフランジ部材の屈曲部同士を連結するように設けられることを特徴とする、請求項１に記載のコンクリート部材の連結構造。 The two flange members are steel having a substantially L-shaped cross section,
2. The connecting structure of concrete members according to claim 1, wherein the web member is provided so as to connect the bent portions of the two flange members. 前記フランジ部材には、当該フランジ部材のフランジ幅方向端部において、前記鉄筋収容部方向に張り出す張り出し部材が設けられることを特徴とする、請求項１～３のいずれか一項に記載のコンクリート部材の連結構造。 The concrete according to any one of claims 1 to 3, characterized in that the flange member is provided with an overhang member that overhangs in the direction of the reinforcing bar accommodation portion at an end portion in the flange width direction of the flange member. Linked structure of members . 前記２つの鉄筋収容部各々には、In each of the two reinforcing bar accommodation units,
鉄筋収容時に、貫通穴を通じて前記鉄筋を貫通させる貫通プレートが配置されることを特徴とする、請求項１～４のいずれか一項に記載のコンクリート部材の連結構造。The connection structure of concrete members according to any one of claims 1 to 4, characterized in that a through plate is arranged to allow the reinforcing bar to pass through the through hole when the reinforcing bar is accommodated. 請求項１～５のいずれかに記載のコンクリート部材の連結構造を用いプレキャストコンクリート部材同士、又は、プレキャストコンクリート部材と他のコンクリート部材とを連結させるプレキャストコンクリート部材の連結方法であって、A method for connecting precast concrete members using the connecting structure for concrete members according to any one of claims 1 to 5, wherein precast concrete members are connected to each other, or precast concrete members are connected to other concrete members,
前記プレキャストコンクリート部材及び他のコンクリート部材を、連結させるための鉄筋を突出させた状態で製造し、manufacturing the precast concrete member and another concrete member in a state in which reinforcing bars for connecting are protruding;
前記プレキャストコンクリート部材及び他のコンクリート部材を連結すべき所定の位置に配置し、Arranging the precast concrete member and another concrete member at a predetermined position to be connected,
前記鉄筋が前記鉄筋収容部に収容されるように鉄筋連結用継手を配置し、arranging a reinforcing bar connection joint so that the reinforcing bar is accommodated in the reinforcing bar accommodating portion;
前記鉄筋収容部、及び、前記プレキャストコンクリート部材同士間、又は、プレキャストコンクリート部材と他のコンクリート部材との間の間隙部に硬化材を充填することを特徴とする、プレキャストコンクリート部材の連結方法。A method for connecting precast concrete members, characterized in that a hardening material is filled in the reinforcing bar accommodating portion and the gap between the precast concrete members or between the precast concrete member and another concrete member.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003049489A (en) 2001-08-07 2003-02-21 Kajima Corp Joint structure for steel plate concrete structure
JP2009235850A (en) 2008-03-28 2009-10-15 Toda Constr Co Ltd Joint structure of precast concrete member

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61254734A (en) * 1985-05-02 1986-11-12 鹿島建設株式会社 Connection of precast steel panel concrete wall

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003049489A (en) 2001-08-07 2003-02-21 Kajima Corp Joint structure for steel plate concrete structure
JP2009235850A (en) 2008-03-28 2009-10-15 Toda Constr Co Ltd Joint structure of precast concrete member

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