JP5474850B2 - Joint member of precast segment - Google Patents

Joint member of precast segment Download PDF

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JP5474850B2
JP5474850B2 JP2011032189A JP2011032189A JP5474850B2 JP 5474850 B2 JP5474850 B2 JP 5474850B2 JP 2011032189 A JP2011032189 A JP 2011032189A JP 2011032189 A JP2011032189 A JP 2011032189A JP 5474850 B2 JP5474850 B2 JP 5474850B2
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precast segment
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JP2012172310A (en
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伸昭 横井
文彦 阪部
正雄 関
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ジオスター株式会社
阪部工業株式会社
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Description

コンクリート構造物を構成するプレキャストセグメント同士を接合する継手金具として、係合凹段部を備えた雄型継手金具と、この雄型継手金具を受け入れる雌型継手金具とからなるものがある。（特許文献１参照）この特許文献１のものでは、雌型継手金具は内部に、一対の半円形体よりなる係止部材と、この一対の半円形体の外側にあってこの一対の半円形体を互いに近接する向きに締め付ける板バネ環体とを備えている。この板バネ環体の弾性変形により一対の半円形体間の距離を広げて雄型継手金具の先端側の通過、つまり、雌型継手金具内への雄型継手金具の導入が許容される。そして、この通過後の板バネ環体の弾性復帰によって雄型継手金具の係合凹段部に係止部材を係止させて、雄型継手金具の備えられたプレキャストセグメントと雌型継手金具の備えられたプレキャストセグメントとを接合させるようにしている。   As a joint fitting for joining the precast segments constituting the concrete structure, there is a joint fitting including a male joint fitting provided with an engaging concave step portion and a female joint fitting for receiving the male joint fitting. (See Patent Document 1) In this Patent Document 1, the female joint fitting is internally provided with a pair of semicircular members and a pair of semicircles outside the pair of semicircular bodies. And a leaf spring ring for tightening the shapes in directions close to each other. Due to the elastic deformation of the leaf spring ring, the distance between the pair of semicircular bodies is increased to allow passage of the male joint fitting at the front end side, that is, introduction of the male joint fitting into the female joint fitting. Then, the elastic member of the leaf spring ring after the passage is elastically restored to engage the engaging member with the engaging concave step portion of the male joint fitting, and the precast segment provided with the male joint fitting and the female joint fitting The precast segment provided is joined.

特許第４４９３５５３号公報Japanese Patent No. 4493553

この発明が解決しようとする主たる問題点は、この種のプレキャストセグメントのジョイント部材（継手金具）を、より簡素で信頼性が高く、低廉に供給可能なものにする点にある。   The main problem to be solved by the present invention is that a joint member (joint fitting) of this kind of precast segment can be supplied more simply, with high reliability and at low cost.

前記課題を達成するために、この発明にあっては、プレキャストセグメントのジョイント部材を、コンクリート構造物を構成するプレキャストセグメントのジョイント部材であって、
プレキャストセグメントの突き合わせ端面から突き出す軸部と、このプレキャストセグメントへの埋込部とを備えた雄金物と、
この雄金物の軸部の受入部を有すると共にこれに通じた受入口をプレキャストセグメントの突き合わせ端面に位置させるようにしてこのプレキャストセグメントに埋設される雌インサートとを備えてなり、
前記雄金物の軸部は頸部を備えていると共に、
前記雌インサートの受入部は、この受入部の内方に向けた自重による移動可能にその側部に形成された収容空間に収められた抜け止め部材と、受入部の奥方に向けた移動可能に受入部内に収められてこの抜け止め部材の前記移動を阻止する阻止部材とを有しており、
プレキャストセグメントの組立時に雌インサートの受入部に導入される雄金物の軸部に押されて阻止部材が受入部の奥方に所定位置まで移動されたときに、抜け止め部材が自重により前記移動をしてこの抜け止め部材の内端側が軸部の頸部に引っかかるようになっているものとした。 In order to achieve the above object, in the present invention, the joint member of the precast segment is a joint member of the precast segment constituting the concrete structure,
A male hardware provided with a shaft portion protruding from a butt end surface of the precast segment, and an embedded portion in the precast segment;
A male insert embedded in the precast segment so as to have a receiving portion of the shaft portion of the male metal and to have a receiving port leading to the receiving portion located at the abutting end surface of the precast segment;
The shank of the male hardware has a neck,
The receiving part of the female insert is movable toward the back of the receiving part, and a retaining member housed in a receiving space formed in the side part of the receiving part so as to be movable by its own weight directed inward of the receiving part. A blocking member that is received in the receiving portion and prevents the movement of the retaining member;
When the blocking member is moved to a predetermined position in the depth of the receiving portion by being pushed by the male metal shaft introduced into the receiving portion of the female insert during the assembly of the precast segment, the retaining member moves as described above due to its own weight. It was assumed that the inner end side of the lever retaining member was caught by the neck portion of the shaft portion.

かかるジョイント部材によれば、隣り合うプレキャストセグメントの一方に備えられた雌インサートの受入部に、隣り合うプレキャストセグメントの他方に備えられた雄金物の軸部を導入して、両プレキャストセグメントの突き合わせ端面を突き合わせたときに、前記抜け止め部材の自重による移動のみによって前記受入部から軸部が抜け出さない状態を作り出すことができる。したがって、ジョイント部材の構造は簡素であり、その構成部品点数も最小化でき、低廉に提供可能であると共に、信頼性の高い接合が可能である。   According to such a joint member, the male metal shaft provided on the other of the adjacent precast segments is introduced into the receiving portion of the female insert provided on one of the adjacent precast segments, and the butt end faces of both precast segments are introduced. When the two are brought into contact with each other, it is possible to create a state in which the shaft portion does not come out of the receiving portion only by the movement of the retaining member due to its own weight. Therefore, the structure of the joint member is simple, the number of components can be minimized, and the joint member can be provided at a low cost, and highly reliable joining is possible.

前記阻止部材を弾性変形可能な材料により構成させておけば、前記のように隣り合うプレキャストセグメントの突き合わせ端面同士が突き合わされた状態において、雄金物の軸部の先端と雌インサートの受入部の内奥部との間には、この軸部に押されて弾性変形された阻止部材の納まる空間が確保されていれば足りることから、雌インサートの受入部の奥行きを必要最小限なものとすることができる。   If the blocking member is made of an elastically deformable material, the end of the male metal shaft and the female insert receiving portion in the state where the butted end faces of adjacent precast segments are butted as described above. Since it is sufficient if there is enough space between the inner part and the blocking member that is pushed and elastically deformed by this shaft part, the depth of the receiving part of the female insert should be minimized. Can do.

前記雌インサートにおける抜け止め部材を金属製の球体とし、
この抜け止め部材の収容空間を、受入部の側部を貫通する前記球体の収納穴と、受入部の内部に形成されると共に前記収納穴に連通された前記球体の外端側を収める深さの周回溝とから構成し、
前記収納穴を周回溝の周回方向に隣り合う収納穴との間に略等しい間隔を開けて三箇所以上設けると共に、各収納穴に前記球体を収め、
雄金物の軸部の頸部を前記球体の内端側を収める深さの周回溝により構成させるようにしておくこともある。 The retaining member in the female insert is a metal sphere,
Depth of accommodating the retaining space of the retaining member into the housing hole of the sphere that penetrates the side portion of the receiving portion and the outer end side of the sphere that is formed inside the receiving portion and communicates with the housing hole. Consisting of a circumferential groove,
The storage hole is provided at three or more locations with a substantially equal interval between the storage holes adjacent to each other in the circumferential direction of the circumferential groove, and the sphere is stored in each storage hole,
In some cases, the neck portion of the shaft portion of the male metal object is configured by a circumferential groove having a depth for accommodating the inner end side of the sphere.

雌インサートの受入部に雄金物の軸部を導入すると、この軸部に押されて阻止部材が受入部の奥方に移動し、軸部の周回溝が収納穴の内方に位置されると、上方に位置される球体は自重により移動しその外端側を収容空間に収め、かつ、その内端側を軸部の周回溝に収める。これにより、球体を介して雌インサートの受入部から雄金物の軸部が抜け出さない状態が作り出される。収納穴とこれに納まる球体を前記のように複数、少なくとも三箇所以上に備えるようにすることで、自重により前記のように移動する球体が必ず存在するようにすることができる。そして、このように移動した球体は軸部の周回溝と受入部の周回溝とによって形成されたドーナツ状の空間内を転動してさらに下方に移動される。   When the male metal shaft is introduced into the receiving part of the female insert, the blocking member is moved to the back of the receiving part by being pushed by this shaft part, and when the circumferential groove of the shaft part is located inside the storage hole, The sphere positioned above moves by its own weight, and its outer end side is stored in the accommodation space, and its inner end side is stored in the circumferential groove of the shaft portion. This creates a state where the male metal shaft does not come out of the female insert receiving part via the sphere. By providing a plurality of storage holes and spheres to be accommodated in the storage holes and at least three or more places as described above, it is possible to ensure that there are spheres that move as described above due to their own weight. Then, the sphere moved in this manner rolls in a donut-shaped space formed by the circumferential groove of the shaft portion and the circumferential groove of the receiving portion, and is further moved downward.

この場合に、さらに、雌インサートの受入部に形成された収納穴を、その受入口側に位置される穴縁を、この受入部の周回溝における受入口側に位置される溝縁よりも、この受入口側に位置させるように形成させておくこともある。このようした場合、隣り合うプレキャストセグメントの一方に備えられた雌インサートの受入部に、隣り合うプレキャストセグメントの他方に備えられた雄金物の軸部を導入して、この一方のプレキャストセグメントの突き合わせ端面と他方のプレキャストセグメントの突き合わせ端面とが両者の間にやや隙間（前記穴縁と溝縁との寸法差相当の隙間）を開けて向き合わされた状態において、上方に位置される阻止部材が前記移動をして軸部の頸部に前記のように引っかかるようにすることができる。すなわち、突き合わせ端面を完全に突き合わせる直前の段階で隣り合うプレキャストセグメント同士を接合させることが可能とされる。   In this case, furthermore, the storage hole formed in the receiving part of the female insert, the hole edge located on the receiving side, the groove edge located on the receiving side in the circumferential groove of the receiving part, It may be formed so as to be positioned on the receiving side. In such a case, a male metal shaft provided on the other of the adjacent precast segments is introduced into the receiving portion of the female insert provided on one of the adjacent precast segments, and the butt end surface of the one precast segment is introduced. And the other end of the precast segment face each other with a slight gap between them (a gap corresponding to the dimensional difference between the hole edge and the groove edge). Then, it can be caught on the neck of the shaft as described above. That is, it is possible to join adjacent precast segments at a stage immediately before the butted end faces are completely butted.

この発明によれば、プレキャストセグメントのジョイント部材を、より簡素で信頼性が高く、低廉に供給可能なものにすることができる。   According to this invention, the joint member of the precast segment can be made simpler, more reliable, and inexpensively supplied.

図１は実施の形態にかかるジョイント部材の斜視図であり、雌インサートの受入部の外側に取り付けられる閉塞部材の記載を省略している。FIG. 1 is a perspective view of a joint member according to an embodiment, and a description of a closing member attached to the outside of a receiving portion of a female insert is omitted. 図２は実施の形態にかかるジョイント部材をプレキャストセグメントに備えさせた様子を断面にして示しており、雄金物の軸部を雌インサートの受入部に導入させる直前の状態である。FIG. 2 is a cross-sectional view showing a state in which the joint member according to the embodiment is provided in the precast segment, and is a state immediately before the shaft portion of the male metal piece is introduced into the receiving portion of the female insert. 図３は図２の要部を拡大して示している。FIG. 3 shows an enlarged main part of FIG. 図４は図３の雌インサートの受入部をその軸中心線に直交する向きに断面にして示した断面図である。FIG. 4 is a cross-sectional view showing the receiving portion of the female insert of FIG. 3 in a cross-section in a direction perpendicular to the axial center line. 図５は図４の状態から雌インサートの受入部に雄金物の軸部が導入され始めた状態を示した断面図である。FIG. 5 is a cross-sectional view showing a state in which the male metal shaft portion is introduced into the female insert receiving portion from the state shown in FIG. 図６は雌インサートの受入部に雄金物の軸部が、球体の収容穴の内方に軸部の周回溝が至る位置まで導入された状態を示した断面図であり、隣り合うプレキャストセグメントの突き合わせ端面間には隙間が残されている。FIG. 6 is a cross-sectional view showing a state where the male metal shaft is introduced to the receiving portion of the female insert up to the position where the circular groove of the shaft reaches the inside of the housing hole of the sphere, A gap is left between the butt end faces. 図７は図６の状態を図４と同じ位置で断面にして示した断面図である。7 is a cross-sectional view showing the state of FIG. 6 in a cross-section at the same position as FIG. 図８は雌インサートの受入部に雄金物の軸部が入れ込みきられた状態を示した断面図であり、隣り合うプレキャストセグメントの突き合わせ端面同士は隙間なく突き合わされている。FIG. 8 is a cross-sectional view showing a state where the male metal shaft portion is fully inserted into the receiving portion of the female insert, and the abutting end surfaces of adjacent precast segments are abutted without a gap. 図９は図８の状態を図４と同じ位置で断面にして示した断面図である。9 is a cross-sectional view showing the state of FIG. 8 in cross section at the same position as FIG.

以下、図１〜図９に基づいて、この発明の典型的な実施の形態について、説明する。この実施の形態にかかるジョイント部材は、コンクリート構造物を構成するプレキャストセグメントＰｃに備えられてその組立時の連結に用いられるものである。かかるジョイント部材は、雄金物Ｍと雌インサートＦとから構成される。雄金物Ｍ及び雌インサートＦは金属から構成される。   Hereinafter, typical embodiments of the present invention will be described with reference to FIGS. The joint member according to this embodiment is provided in a precast segment Pc constituting a concrete structure and used for connection at the time of assembly. Such a joint member is composed of a male metal M and a female insert F. The male metal M and the female insert F are made of metal.

雄金物Ｍは、プレキャストセグメントＰｃの突き合わせ端面Ｐｃａから突き出す軸部１と、このプレキャストセグメントＰｃへの埋込部２とを備えている。すなわち、雄金物Ｍの埋込部２は、プレキャストセグメントＰｃの製作時に、このプレキャストセグメントＰｃの図示しない型枠内に位置される。前記突き合わせ端面ＰｃａはプレキャストセグメントＰｃの組立時に隣り合うプレキャストセグメントＰｃと接合される面である。一つのプレキャストセグメントＰｃの各突き合わせ端面Ｐｃａに、必要に応じて、かかる雄金物Ｍ及び雌インサートＦの一方及び双方が、必要な数分備えられる。   The male metal M is provided with a shaft portion 1 that protrudes from the abutting end face Pca of the precast segment Pc, and an embedded portion 2 in the precast segment Pc. That is, the embedded portion 2 of the male metal M is positioned in a mold frame (not shown) of the precast segment Pc when the precast segment Pc is manufactured. The abutting end surface Pca is a surface joined to the adjacent precast segment Pc when the precast segment Pc is assembled. Each butted end face Pca of one precast segment Pc is provided with one or both of the male metal M and the female insert F as many as necessary.

図示の例では、雄金物Ｍの軸部１は、その軸中心線を、この突き合わせ端面Ｐｃａに直交させるようにして、前記突き合わせ端面Ｐｃａから突き出されるようになっている。図示の例では、埋込部２と軸部１とは分割されている。   In the illustrated example, the shaft portion 1 of the male metal object M is projected from the butted end surface Pca so that its axial center line is orthogonal to the butted end surface Pca. In the illustrated example, the embedded portion 2 and the shaft portion 1 are divided.

埋込部２は丸棒状をなし、その一端を前記突き合わせ端面Ｐｃａと同面上に位置させるようにしてプレキャストセグメントＰｃに内蔵される。埋込部２の一端側は前記突き合わせ端面Ｐｃａに筒口を位置させる筒状をなすように構成され、その内部には雌ネジ部２０が形成されている。埋込部２の他端にはフランジ２１が形成されている。   The embedded portion 2 has a round bar shape, and is embedded in the precast segment Pc so that one end thereof is positioned on the same surface as the butted end surface Pca. One end side of the embedding portion 2 is configured to have a cylindrical shape in which a cylindrical opening is positioned on the abutting end surface Pca, and a female screw portion 20 is formed therein. A flange 21 is formed at the other end of the embedded portion 2.

軸部１も丸棒状をなす。軸部１は、一端側を細径部１０とし、他端側を太径部１１とし、両者の間に周回段差面１２を備えている。細径部１０の外周には前記雌ネジ部２０に噛み合う雄ネジ部が形成されており、軸部１は周回段差面１２が埋込部２の一端に突き当たる位置までこの埋込部２の前記雌ネジ部２０の形成箇所内に細径部１０をねじ込むことで埋込部２に組み合わされるようになっている。太径部１１の先端と周回段差面１２との間には周回溝１３が形成されている。この周回溝１３は後述の抜け止め部材となる球体３２の半径と略等しい深さを備えると共に、溝幅方向での断面形状をこの球体３２の外形に倣った半弧状としている。かかる周回溝１３により、雄金物Ｍの軸部１は、その先端１６とこの周回溝１３との間を頭部１４とし、この周回溝１３の形成箇所を頸部１５とするように構成されている。また、雄金物Ｍの軸部１の先端１６をなす面とこの軸部１の周面とが接し合う縁部には面取り１７が施されている。   The shaft 1 also has a round bar shape. The shaft portion 1 has a small-diameter portion 10 at one end side and a large-diameter portion 11 at the other end side, and is provided with a circumferential step surface 12 therebetween. A male screw portion that meshes with the female screw portion 20 is formed on the outer periphery of the small-diameter portion 10, and the shaft portion 1 reaches the position where the circumferential step surface 12 abuts against one end of the embedded portion 2. The small-diameter portion 10 is screwed into the formation portion of the female screw portion 20 to be combined with the embedded portion 2. A circumferential groove 13 is formed between the tip of the large diameter portion 11 and the circumferential step surface 12. The circumferential groove 13 has a depth substantially equal to the radius of a sphere 32 serving as a retaining member, which will be described later, and has a semicircular arc shape following the outer shape of the sphere 32 in the groove width direction. Due to the circumferential groove 13, the shaft portion 1 of the male metal object M is configured such that a portion between the tip 16 and the circumferential groove 13 is a head portion 14, and a portion where the circumferential groove 13 is formed is a neck portion 15. Yes. Further, a chamfer 17 is applied to an edge portion where the surface forming the tip 16 of the shaft portion 1 of the male metal M and the peripheral surface of the shaft portion 1 are in contact.

雌インサートＦは、前記雄金物Ｍの軸部１の受入部３を有すると共にこれに通じた受入口３０をプレキャストセグメントＰｃの突き合わせ端面Ｐｃａに位置させるようにしてこのプレキャストセグメントＰｃに埋設される。すなわち、雌インサートＦは、プレキャストセグメントＰｃの製作時に、このプレキャストセグメントＰｃの型枠内に位置される。   The female insert F has the receiving portion 3 of the shaft portion 1 of the male metal M and is embedded in the precast segment Pc so that the receiving port 30 leading to the receiving portion 3 is positioned at the abutting end surface Pca of the precast segment Pc. That is, the female insert F is positioned within the mold of the precast segment Pc when the precast segment Pc is manufactured.

かかる雌インサートＦの受入部３は、この受入部３の内方に向けた自重による移動可能にその側部に形成された収容空間３１に収められた抜け止め部材（後述の球体３２）と、受入部３の奥方に向けた移動可能に受入部３内に収められてこの抜け止め部材の前記移動を阻止する阻止部材３３とを有している。   The receiving portion 3 of the female insert F includes a retaining member (a sphere 32 described later) housed in a receiving space 31 formed on the side of the receiving portion 3 so as to be movable by its own weight directed inward of the receiving portion 3. A blocking member 33 that is housed in the receiving portion 3 so as to be movable toward the back of the receiving portion 3 and prevents the movement of the retaining member.

図示の例では、雌インサートＦは、円筒状をなす受入部３と、丸棒状をなす脚部４とを備えている。受入部３の一方の筒端は開放されており、雄金物Ｍの軸部１の受入口３０となっている。一方、他方の筒端は閉塞されている。脚部４は、その一端を受入部３の閉塞された筒端に一体に連接させている。脚部４の他端にはフランジ４０が形成されている。   In the illustrated example, the female insert F includes a receiving portion 3 having a cylindrical shape and a leg portion 4 having a round bar shape. One cylindrical end of the receiving portion 3 is open and serves as a receiving port 30 for the shaft portion 1 of the male metal M. On the other hand, the other cylinder end is closed. One end of the leg portion 4 is integrally connected to the closed cylinder end of the receiving portion 3. A flange 40 is formed at the other end of the leg 4.

そして、プレキャストセグメントＰｃの組立時に雌インサートＦの受入部３に導入される雄金物Ｍの軸部１に押されて阻止部材３３が受入部３の奥方に所定位置まで移動されたときに、抜け止め部材が自重により前記移動をしてこの抜け止め部材の内端３２ａ側が軸部１の頸部１５に引っかかるようになっている。このとき、抜け止め部材の外端３２ｂ側は前記収容空間３１内に位置されている。   When the blocking member 33 is moved to a predetermined position behind the receiving portion 3 by being pushed by the shaft portion 1 of the male metal M introduced into the receiving portion 3 of the female insert F when the precast segment Pc is assembled. The stopper member is moved by its own weight, and the inner end 32 a side of the stopper member is caught by the neck portion 15 of the shaft portion 1. At this time, the outer end 32 b side of the retaining member is located in the accommodation space 31.

この実施の形態にあっては、隣り合うプレキャストセグメントＰｃ、Ｐｃの一方に備えられた雌インサートＦの受入部３に、隣り合うプレキャストセグメントＰｃ、Ｐｃの他方に備えられた雄金物Ｍの軸部１を導入して、この一方のプレキャストセグメントＰｃの突き合わせ端面Ｐｃａと他方のプレキャストセグメントＰｃの突き合わせ端面Ｐｃａとが突き合わされた状態において、上方に位置される阻止部材３３が前記移動をして軸部１の頸部１５に前記のように引っかかるようになっている。   In this embodiment, the shaft portion of the male metal M provided on the other of the adjacent precast segments Pc and Pc in the receiving portion 3 of the female insert F provided on one of the adjacent precast segments Pc and Pc. 1, in the state where the butted end surface Pca of the one precast segment Pc and the butted end surface Pca of the other precast segment Pc are butted, the blocking member 33 positioned above moves and the shaft portion One neck 15 is caught as described above.

この実施の形態にあっては、前記阻止部材３３は弾性変形可能な材料により構成されている。図示の例では、阻止部材３３は、雌インサートＦの受入部３の内径と略等しい外径と、この受入部３における前記収容空間３１の形成箇所からこの受入部３の内奥部までの間に亘る長さとを備えた円柱状のプラスチックフォーム材から構成されている。また、前記のように隣り合うプレキャストセグメントＰｃ、Ｐｃの突き合わせ端面Ｐｃａ同士が突き合わされた状態において、雄金物Ｍの軸部１の先端１６と雌インサートＦの受入部３の内奥部との間には、この軸部１に押されて弾性変形された阻止部材３３の納まる空間３４が確保されるようになっている。（図８）これにより、この実施の形態にあっては、雌インサートＦの受入部３の奥行きを必要最小限なものとしている。   In this embodiment, the blocking member 33 is made of an elastically deformable material. In the illustrated example, the blocking member 33 has an outer diameter that is substantially equal to the inner diameter of the receiving portion 3 of the female insert F, and the space between the receiving space 3 and the inner space of the receiving portion 3. It is comprised from the column-shaped plastic foam material provided with the length over. Further, in the state where the butted end faces Pca of the adjacent precast segments Pc and Pc are butted as described above, between the tip 16 of the shaft portion 1 of the male metal M and the inner back portion of the receiving portion 3 of the female insert F. Thus, a space 34 in which the blocking member 33 which is pushed and elastically deformed by the shaft portion 1 is accommodated is secured. (FIG. 8) Thereby, in this embodiment, the depth of the receiving part 3 of the female insert F is made the minimum necessary.

この実施の形態にかかるジョイント部材によれば、隣り合うプレキャストセグメントＰｃ、Ｐｃの一方に備えられた雌インサートＦの受入部３に、隣り合うプレキャストセグメントＰｃ、Ｐｃの他方に備えられた雄金物Ｍの軸部１を導入して、両プレキャストセグメントＰｃ、Ｐｃの突き合わせ端面Ｐｃａを突き合わせたときに、前記抜け止め部材の自重による移動のみによって前記受入部３から軸部１が抜け出さない状態を作り出すことができる。雌インサートＦの受入部３は前記抜け止め部材と阻止部材３３を備えれば足り、したがって、ジョイント部材の構造は簡素であり、その構成部品点数も最小化でき、さらにコンパクトに構成でき、したがってまた低廉に提供可能であると共に、信頼性の高い接合が可能である。   According to the joint member according to this embodiment, the male metal M provided on the other of the adjacent precast segments Pc and Pc on the receiving portion 3 of the female insert F provided on one of the adjacent precast segments Pc and Pc. When the shaft portion 1 is introduced and the butted end faces Pca of both the precast segments Pc and Pc are butted together, a state in which the shaft portion 1 does not come out of the receiving portion 3 only by the movement of the retaining member due to its own weight is created. Can do. The receiving part 3 of the female insert F only needs to include the retaining member 33 and the blocking member 33. Therefore, the structure of the joint member is simple, the number of components can be minimized, and the structure can be made more compact. In addition to being able to be provided at low cost, highly reliable joining is possible.

この実施の形態にあっては、前記雌インサートＦにおける抜け止め部材は金属製の球体３２として構成されている。また、この抜け止め部材の収容空間３１は、受入部３の側部を内外に貫通する前記球体３２の収納穴３１ａと、受入部３の内部に形成されると共に前記収納穴３１ａに連通された前記球体３２の外端３２ｂ側を収める深さの周回溝３１ｆとから構成されている。かかる収容空間３１は、受入部３の奥行き方向略中程の位置に設けられている。前記収納穴３１ａは、前記球体３２の直径と略等しい穴径の丸穴となっている。また、前記周回溝３１ｆは、前記球体３２の半径と略等しい深さを備えると共に、溝幅方向での断面形状をこの球体３２の外形に倣った半弧状としている。また、前記収納穴３１ａは周回溝３１ｆの周回方向に隣り合う収納穴３１ａとの間に略等しい間隔を開けて、図示の例では四箇所に設けられていると共に、各収納穴３１ａにそれぞれ前記球体３２が収められている。受入部３に雄金物Ｍの軸部１を導入しない状態においては、前記阻止部材３３により上方に位置される球体３２も周回溝３１ｆの溝口にその内端３２ａを位置させるようになっている。（図４）下方に位置される球体３２は図中符号３５で示される収納穴３１ａの外側の穴口３１ｂを塞ぐ閉塞部材に接するようになっている。かかる閉塞部材３５は収納穴３１ａに球体３２を収めた後、この収納穴３１ａから球体３２の抜け出しを阻止する構成のものであれば良い。かかる閉塞部材３５は、例えば、受入部３の外側にはめられるゴムバンドや、スリーブ体によって構成することができる。   In this embodiment, the retaining member in the female insert F is configured as a metal sphere 32. In addition, the retaining space 31 of the retaining member is formed in the receiving hole 3 of the spherical body 32 that penetrates the side portion of the receiving portion 3 inward and outward, and is formed in the receiving portion 3 and communicated with the receiving hole 31a. The circular groove 31f has a depth that accommodates the outer end 32b of the spherical body 32. The accommodating space 31 is provided at a position approximately in the middle of the receiving portion 3 in the depth direction. The storage hole 31 a is a round hole having a hole diameter substantially equal to the diameter of the sphere 32. Further, the circumferential groove 31f has a depth substantially equal to the radius of the sphere 32, and a cross-sectional shape in the groove width direction is a semi-arc shape following the outer shape of the sphere 32. The storage holes 31a are provided at substantially equal intervals between the storage holes 31a adjacent to each other in the circumferential direction of the circular groove 31f. In the illustrated example, the storage holes 31a are provided at four locations. A sphere 32 is accommodated. In a state where the shaft portion 1 of the male metal M is not introduced into the receiving portion 3, the spherical body 32 positioned above by the blocking member 33 also has its inner end 32a positioned at the groove opening of the circumferential groove 31f. (FIG. 4) The sphere 32 positioned below is in contact with a closing member that closes the hole 31b outside the storage hole 31a indicated by reference numeral 35 in the drawing. The closing member 35 may be configured to prevent the sphere 32 from coming out of the storage hole 31a after the sphere 32 is stored in the storage hole 31a. The closing member 35 can be constituted by, for example, a rubber band fitted on the outside of the receiving portion 3 or a sleeve body.

一方、雄金物Ｍの軸部１は雌インサートＦの受入部３の内径と略等しい外径を備えると共に、その頸部１５は前記球体３２の内端３２ａ側を収める深さの周回溝１３により構成されている。   On the other hand, the shaft portion 1 of the male metal piece M has an outer diameter substantially equal to the inner diameter of the receiving portion 3 of the female insert F, and the neck portion 15 is formed by a circumferential groove 13 having a depth for accommodating the inner end 32a side of the spherical body 32. It is configured.

雌インサートＦの受入部３に雄金物Ｍの軸部１を導入すると、この軸部１に押されて阻止部材３３が受入部３の奥方に移動し、軸部１の周回溝１３が収納穴３１ａの内方に位置されると、上方に位置される球体３２は自重により移動しその外端３２ｂ側を収容空間３１に収め、かつ、その内端３２ａ側を軸部１の周回溝１３に収める。これにより、球体３２を介して雌インサートＦの受入部３から雄金物Ｍの軸部１が抜け出さない状態が作り出される。収納穴３１ａとこれに納まる球体３２を前記のように複数、少なくとも三箇所以上に備えるようにすることで、自重により前記のように移動する球体３２が必ず存在するようにすることができる。図示の例では、四箇所の収納穴３１ａのうち、隣り合う二箇所の収納穴３１ａ、３１ａの内側の穴口３１ｃにテーパー面３１ｄを形成してこの穴口３１ｃを拡径化しており、これによりこの二箇所の収納穴３１ａのいずれか一方が水平方向に位置される場合でも、収められた球体３２が自重により移動するようにしてある。図示の例では、四箇所の収納穴３１ａの二箇所が上下に、残りの二箇所が左右に位置される状態では、上側の収納穴３１ａにある球体３２と、穴口にテーパー面３１ｄを形成された図５において左側に位置される収納穴３１ａにある球体３２とが前記移動を生じるようになっている。そして、このように移動した球体３２は軸部１の周回溝１３と受入部３の周回溝３１ｆとによって形成されたドーナツ状の空間内を転動してさらに下方に移動される。（図７から図８）図示の例とは別に、収納穴３１ａに、前記閉塞部材３５との間にプラスチックフォーム材などの弾性部材を弾性変形させた状態で、球体３２を納めるようにしておくこともできる。このようにした場合、雌インサートＦの受入部３への雄金物Ｍの軸部１の導入により阻止部材３３が受入部３の奥方に移動したときに、かかる弾性部材の弾性復帰により前記のように水平方向に位置される収納穴３１ａに納められた球体３２の移動が生じるようにすることができる。このようにした場合には、前記収納穴３１ａの内側の穴口３１ｃにテーパー面３１ｄを形成させる必要はなくなる。   When the shaft portion 1 of the male metal piece M is introduced into the receiving portion 3 of the female insert F, the blocking member 33 is moved to the back of the receiving portion 3 by being pushed by the shaft portion 1, and the circumferential groove 13 of the shaft portion 1 is accommodated in the receiving hole. When positioned inward of 31 a, the sphere 32 positioned above moves by its own weight, and the outer end 32 b side thereof is accommodated in the accommodating space 31, and the inner end 32 a side thereof is in the circumferential groove 13 of the shaft portion 1. Fit. As a result, a state in which the shaft portion 1 of the male metal object M does not come out from the receiving portion 3 of the female insert F via the sphere 32 is created. By providing a plurality of the storage holes 31a and the spheres 32 to be accommodated in the storage holes 31a as described above and at least three or more places, it is possible to ensure that the spheres 32 that move as described above exist by their own weight. In the illustrated example, a taper surface 31d is formed in a hole 31c inside two storage holes 31a, 31a adjacent to each other among the four storage holes 31a to expand the diameter of the hole 31c. Even when either one of the two storage holes 31a is positioned in the horizontal direction, the stored sphere 32 is moved by its own weight. In the illustrated example, in the state where the four storage holes 31a are positioned up and down and the remaining two positions are positioned left and right, a spherical surface 32 in the upper storage hole 31a and a tapered surface 31d are formed in the hole openings. In FIG. 5, the sphere 32 in the storage hole 31a located on the left side causes the movement. The spherical body 32 thus moved rolls in a donut-shaped space formed by the circumferential groove 13 of the shaft portion 1 and the circumferential groove 31f of the receiving portion 3 and is further moved downward. (FIGS. 7 to 8) Separately from the illustrated example, the spherical body 32 is accommodated in the accommodation hole 31a in a state where an elastic member such as a plastic foam material is elastically deformed between the closing member 35 and the storage hole 31a. You can also. In this case, when the blocking member 33 moves to the back of the receiving portion 3 by the introduction of the shaft portion 1 of the male metal M into the receiving portion 3 of the female insert F, the elastic member returns elastically as described above. The movement of the sphere 32 stored in the storage hole 31a positioned in the horizontal direction can occur. In this case, it is not necessary to form the tapered surface 31d in the hole 31c inside the storage hole 31a.

また、この実施の形態にあっては、雌インサートＦの受入部３に形成された収納穴３１ａが、その受入口３０側に位置される穴縁３１ｅを、この受入部３の周回溝３１ｆにおける受入口３０側に位置される溝縁３１ｇよりも、この受入口３０側に位置させるように形成されている。   Further, in this embodiment, the storage hole 31a formed in the receiving portion 3 of the female insert F has a hole edge 31e positioned on the receiving port 30 side in the circumferential groove 31f of the receiving portion 3. It is formed so as to be positioned on the receiving port 30 side rather than the groove edge 31g positioned on the receiving port 30 side.

これにより、この実施の形態にあっては、隣り合うプレキャストセグメントＰｃ、Ｐｃの一方に備えられた雌インサートＦの受入部３に、隣り合うプレキャストセグメントＰｃ、Ｐｃの他方に備えられた雄金物Ｍの軸部１を導入して、この一方のプレキャストセグメントＰｃの突き合わせ端面Ｐｃａと他方のプレキャストセグメントＰｃの突き合わせ端面Ｐｃａとが両者の間にやや隙間ｓ（前記穴縁３１ｅと溝縁３１ｇとの寸法差ｘ相当の隙間ｓ）を開けて向き合わされた状態において、上方に位置される阻止部材３３が前記移動をして軸部１の頸部１５に前記のように引っかかるようになっている。（図６及び図７）この状態においては、雄金物Ｍの軸部１の周回溝１３と雌インサートＦの受入部３の周回溝３１ｆとは前記寸法差ｘにより整合しないため、上方にある球体３２は前記のように転動しない。そして、この後、一方のプレキャストセグメントＰｃの突き合わせ端面Ｐｃａと他方のプレキャストセグメントＰｃの突き合わせ端面Ｐｃａとを突き合わせると、雄金物Ｍの軸部１の周回溝１３と雌インサートＦの受入部３の周回溝３１ｆとが整合して上方にある球体３２は前記のように転動される。（図８及び図９）   Accordingly, in this embodiment, the male metal M provided on the other of the adjacent precast segments Pc and Pc is received by the receiving portion 3 of the female insert F provided on one of the adjacent precast segments Pc and Pc. The butt end face Pca of the one precast segment Pc and the butt end face Pca of the other precast segment Pc are slightly spaced from each other with a gap s (the dimension between the hole edge 31e and the groove edge 31g). In a state where the gap s) corresponding to the difference x is opened and faced, the blocking member 33 positioned above is moved and hooked on the neck portion 15 of the shaft portion 1 as described above. (FIGS. 6 and 7) In this state, the circumferential groove 13 of the shaft portion 1 of the male metal M and the circumferential groove 31f of the receiving portion 3 of the female insert F are not aligned due to the dimensional difference x. 32 does not roll as described above. After that, when the butted end surface Pca of one precast segment Pc and the butted end surface Pca of the other precast segment Pc are butted, the circumferential groove 13 of the shaft portion 1 of the male metal M and the receiving portion 3 of the female insert F The sphere 32 that is in alignment with the circumferential groove 31f is rolled as described above. (FIGS. 8 and 9)

Ｍ 雄金物
Ｆ 雌インサート
１ 軸部
１５ 頸部
３ 受入部
３１ 収容空間
３２ａ 内端
３３ 阻止部材 M male metal fitting F female insert 1 shaft portion 15 neck portion 3 receiving portion 31 receiving space 32a inner end 33 blocking member

Claims (2)

コンクリート構造物を構成するプレキャストセグメントのジョイント部材であって、
プレキャストセグメントの突き合わせ端面から突き出す軸部と、このプレキャストセグメントへの埋込部とを備えた雄金物と、
この雄金物の軸部の受入部を有すると共にこれに通じた受入口をプレキャストセグメントの突き合わせ端面に位置させるようにしてこのプレキャストセグメントに埋設される雌インサートとを備えてなり、
前記雄金物の軸部は頸部を備えていると共に、
前記雌インサートの受入部は、この受入部の内方に向けた自重による移動可能にその側部に形成された収容空間に収められた抜け止め部材と、受入部の奥方に向けた移動可能に受入部内に収められてこの抜け止め部材の前記移動を阻止する阻止部材とを有しており、
プレキャストセグメントの組立時に雌インサートの受入部に導入される雄金物の軸部に押されて阻止部材が受入部の奥方に所定位置まで移動されたときに、抜け止め部材が自重により前記移動をしてこの抜け止め部材の内端側が軸部の頸部に引っかかるようになっており、
しかも、雌インサートにおける抜け止め部材は金属製の球体であり、
この抜け止め部材の収容空間は、受入部の側部を貫通する前記球体の収納穴と、受入部の内部に形成されると共に前記収納穴に連通された前記球体の外端側を収める深さの周回溝とから構成されており、
前記収納穴は周回溝の周回方向に隣り合う収納穴との間に略等しい間隔を開けて三箇所以上設けられていると共に、各収納穴に前記球体が収められており、
雄金物の軸部の頸部は前記球体の内端側を収める深さの周回溝により構成されていると共に、
雌インサートの受入部に形成された収納穴が、その受入口側に位置される穴縁を、この受入部の周回溝における受入口側に位置される溝縁よりも、この受入口側に位置させるように形成されていることを特徴とするプレキャストセグメントのジョイント部材。 A joint member of a precast segment constituting a concrete structure,
A male hardware provided with a shaft portion protruding from a butt end surface of the precast segment, and an embedded portion in the precast segment;
A male insert embedded in the precast segment so as to have a receiving portion of the shaft portion of the male metal and to have a receiving port leading to the receiving portion located at the abutting end surface of the precast segment;
The shank of the male hardware has a neck,
The receiving part of the female insert is movable toward the back of the receiving part, and a retaining member housed in a receiving space formed in the side part of the receiving part so as to be movable by its own weight directed inward of the receiving part. A blocking member that is received in the receiving portion and prevents the movement of the retaining member;
When the blocking member is moved to a predetermined position in the depth of the receiving portion by being pushed by the male metal shaft introduced into the receiving portion of the female insert during the assembly of the precast segment, the retaining member moves as described above due to its own weight. The inner end side of the lever retaining member is hooked to the neck of the shaft ,
Moreover, the retaining member in the female insert is a metal sphere,
The storage space for the retaining member is a depth that accommodates the storage hole of the sphere that penetrates the side of the receiving portion, and the outer end side of the sphere that is formed inside the receiving portion and communicates with the storage hole. It is composed of the circumferential groove of
The storage hole is provided at three or more locations with a substantially equal interval between the storage holes adjacent in the circumferential direction of the circular groove, and the sphere is stored in each storage hole,
The neck portion of the male metal shaft portion is constituted by a circumferential groove having a depth for accommodating the inner end side of the sphere,
The storage hole formed in the receiving part of the female insert is positioned on the receiving side of the hole edge positioned on the receiving side, rather than the groove edge positioned on the receiving side in the circumferential groove of the receiving part. A joint member for a precast segment, wherein the joint member is formed to be 阻止部材は弾性変形可能な材料により構成されていることを特徴とする請求項１に記載のプレキャストセグメントのジョイント部材。   The joint member for a precast segment according to claim 1, wherein the blocking member is made of an elastically deformable material.
JP2011032189A 2011-02-17 2011-02-17 Joint member of precast segment Active JP5474850B2 (en)

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