WO2021014616A1 - 鉄筋継手および鉄筋組立体、並びにプレキャスト鉄筋コンクリート体 - Google Patents
鉄筋継手および鉄筋組立体、並びにプレキャスト鉄筋コンクリート体 Download PDFInfo
- Publication number
- WO2021014616A1 WO2021014616A1 PCT/JP2019/029052 JP2019029052W WO2021014616A1 WO 2021014616 A1 WO2021014616 A1 WO 2021014616A1 JP 2019029052 W JP2019029052 W JP 2019029052W WO 2021014616 A1 WO2021014616 A1 WO 2021014616A1
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- WIPO (PCT)
- Prior art keywords
- joint
- reinforcing bar
- threaded portion
- tubular body
- pair
- Prior art date
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- 239000011150 reinforced concrete Substances 0.000 title claims description 14
- 229910000831 Steel Inorganic materials 0.000 title abstract 6
- 239000010959 steel Substances 0.000 title abstract 6
- 230000003014 reinforcing effect Effects 0.000 claims description 135
- 239000004567 concrete Substances 0.000 claims description 28
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 abstract 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 1
- 238000009415 formwork Methods 0.000 description 26
- 238000010276 construction Methods 0.000 description 22
- 239000011440 grout Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000005304 joining Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
- E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
- E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
- E04B1/043—Connections specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4114—Elements with sockets
- E04B1/4121—Elements with sockets with internal threads or non-adjustable captive nuts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/18—Spacers of metal or substantially of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B2001/4192—Connecting devices specially adapted for embedding in concrete or masonry attached to concrete reinforcing elements, e.g. rods or wires
Definitions
- the present invention relates to a reinforcing bar joint and a reinforcing bar assembly most suitable for a precast method used for construction of a reinforced concrete structure such as a beam or a column, and a precast reinforced concrete body.
- the mechanical joint is known as a construction method in which a coupler is put on the end of the reinforcing bar and the reinforcing bar is integrated by utilizing the meshing of the joint between the reinforcing bar and the coupler or the joining by a screw.
- the merits of this mechanical joint are that the reinforcing bars do not shrink during construction, that all joints can be made at the end of the member, that workers do not need special qualifications, and that they are not affected by the weather.
- the present invention can be efficiently applied to precast construction methods used for construction of reinforced concrete structures such as beams and columns without causing high cost and delay in construction period, as well as rebar joints and rebar assemblies, and precast reinforced concrete.
- the purpose is to provide the body.
- the reinforcing bar joint is a reinforcing bar joint that connects the ends of a pair of reinforcing bars facing each other in the longitudinal direction to each other, and is a tubular body having a female threaded portion formed on the inner surface.
- a joint member having a joint male screw portion at one end thereof and a connecting member for connecting a pair of opposing joint members so as to be displaceable in the longitudinal direction and the orthogonal direction thereof, and one of the above-mentioned one end portions of the tubular body.
- the male threaded portion of the reinforcing bar formed at the end of the reinforcing bar is screwed, and the male threaded portion of the joint at one end of the joint member is screwed into the other end.
- the connecting member connecting the pair of facing joint members to each other connects the pair of joint members so as to be displaceable in the longitudinal direction and the orthogonal direction thereof.
- the construction period can be shortened even if the connection between the pair of reinforcing bars has a certain allowable range.
- the joint member has a main body portion and the joint male thread portion, and the connecting member and the joint member are attached and detached by a fastening member in a state where the main body portions of the pair of joint members face each other in the longitudinal direction. It may be freely connected. According to this configuration, not only the reinforcing bar assembly in the factory but also the reinforcing bar assembly at the construction site can be performed quickly and easily.
- the main body of the joint member may be interposed between the pair of connecting members. According to this configuration, since the main body of the joint member is firmly held by the pair of connecting members in a sandwich structure, the reliability of joining the pair of reinforcing bars is also improved.
- a plurality of reinforcing bars are arranged in parallel and connected by stirrups, and the reinforcing bar male threaded portion formed on the reinforcing bar has a tubular shape having a female threaded portion on the inner surface.
- the body is screwed, the male threaded portion of the reinforcing bar invades the inner portion in the axial direction of the female threaded portion, and the outer portion in the axial direction of the female threaded portion is exposed to the outside of the reinforcing bar assembly.
- the joint member since the female threaded portion of the tubular body is exposed at the end of the reinforcing bar, the joint member can be easily connected to the reinforcing bar by screwing the joint member into the exposed female threaded portion. Therefore, it is possible to improve the efficiency of the work of connecting the reinforcing bars by the reinforcing bar joint.
- the tubular body and the reinforcing bar in the reinforcing bar joint are embedded in the concrete, and the female threaded portion of the tubular body is exposed from the end face of the concrete.
- precast reinforced concrete bodies that can be beams and columns in reinforced concrete structures are manufactured in the factory, and when they are joined at the construction site, the female threads on the outer end faces of the tubular bodies that are exposed from the end faces of the concrete. Can be used to easily join adjacent precast reinforced concrete bodies with reinforced joints. Therefore, the workability at the construction site is significantly improved.
- FIG. 1 is a front view showing a state in which the reinforcing bar assembly according to the first embodiment of the present invention is attached to a formwork. ⁇ About the structure of the reinforcing bar assembly>
- FIG. 1 shows one reinforcing bar assembly A that can be a beam or a column located on the right side and the other reinforcing bar assembly A that can be a beam or a column located on the left side.
- the case where the reinforcing bar assembly A can be a beam is shown.
- the left and right reinforcing bar assemblies A and A are the same assembly using the same number of main reinforcing bars (reinforcing bars) 1 and the same or different number of stirrups 2.
- a plurality of reinforcing bars 1 serving as main reinforcing bars are arranged apart from each other in the vertical direction of FIG. 1 and the front and back directions of the paper surface, and extend in the horizontal direction (horizontal direction in this example) parallel to each other. ing.
- a plurality of stirrups 2 serving as shear reinforcing bars are wound around these reinforcing bars 1.
- the reinforcing bar 1 is a deformed reinforcing bar in which ridges including ribs extending in the longitudinal direction and knots extending in the circumferential direction at regular intervals are formed on the outer periphery, but may be a normal round bar.
- a male screw portion 15 is formed at the end of the reinforcing bar 1, for example, by rolling.
- the male threaded portion 15 may be formed separately from the reinforcing bar 1 and joined to the end face of the reinforcing bar 1 by welding.
- a tubular body 10 having a female threaded portion formed on the inner surface of the male threaded portion 15 is screwed.
- the reinforcing bar assembly A is attached to the formwork 7 by screwing the attachment screw body 6 inserted from the outside of the formwork 7 into the tubular body 10.
- the reinforcing bar assembly A located on the left side has the same structure.
- Each reinforcing bar assembly A is a precast reinforced concrete body P such as a beam or a column (hereinafter, simply referred to as a PC concrete body P) by placing ready-mixed concrete in the formwork 7 with the formwork 7 attached at the factory.
- the reinforcing bar assembly A with the formwork 7 may be transported to the construction site, and ready-mixed concrete may be placed in the formwork 7 at the construction site.
- the reinforcing bar 1, the stirrups 2, the tubular body 10, and the formwork 7 are separately transported to the construction site, and after creating the reinforcing bar assembly A with the formwork 7 at the construction site, the reinforcing bar assembly A is formed in the formwork 7. Concrete may be cast.
- the screw body 6 is pulled out, the formwork 7 is removed, and the reinforcing bars 1 and 1 of the left and right PC concrete bodies P are connected by the reinforcing bar joint B.
- the PC concrete body P is a beam, but when the PC concrete body P is a column, the reinforcing bars 1 and 1 of the pair of upper and lower PC concrete bodies P are connected to each other.
- the reinforcing bar joint B includes a tubular body 10 serving as a coupler in which a female thread portion 14 is formed on the inner surface described above, and a joint member 11 having a joint male thread portion 13 at one end. , A connecting member 19 for connecting a pair of joint members 11 and 11 facing each other is provided.
- the connecting member 19 sandwiches the joint member 11 in a pair of upper and lower parts with a sandwich structure, and holds the connecting member 19 so as to be displaceable in the longitudinal direction (axial direction) X and its orthogonal direction Y.
- the longitudinal direction X of the joint member 11 and the reinforcing bar 1 is common, and the direction orthogonal to the longitudinal direction X and parallel to the main surface of the main body 12 of the joint member 11, that is, orthogonal to the through hole 17 is defined as Y.
- Z be a direction orthogonal to both directions X and Y.
- the tubular body 10 is embedded in the concrete body P.
- the tubular body 10 has a hexagonal cross section, and a female threaded portion 14 screwed into the exposed reinforcing bar male threaded portion 15 at the end of the reinforcing bar 1 is formed on the inner surface thereof.
- the tubular body 10 may have a circular outer shape or a polygonal cross section.
- the male threaded portion 15 of the reinforcing bar is screwed only to the inner portion in the axial direction which is a part of the female threaded portion 14 of the tubular body 10.
- the joint member 11 includes a main body portion 12 having a flat shape and a joint male screw portion 13 screwed into a female screw portion 14 of a tubular body 10 at the tip thereof.
- Three through holes 17 are formed in the main body 12 at predetermined intervals (for example, 60 mm).
- the number of through holes 17 is three in this example, but may be two or four or more.
- the through hole 17 is a free fitting hole (excessive hole) having an inner diameter several mm larger than the outer diameter of the high-strength bolt or the ultra-high-strength bolt (hereinafter, may be simply referred to as “bolt”) 25 described later.
- a friction adjusting portion 17a formed of an annular protrusion or a chamfer is formed on the edges of both ends thereof.
- the tubular body 10 and the joint member 11 of FIG. 2 are arranged so that those having the same structure face each other in the longitudinal direction (in this case, the horizontal direction because a reinforcing bar for a beam is assumed), and the joint of each joint member 11
- the male threaded portion 13 is screwed into the female threaded portion 14 of the corresponding tubular body 10.
- the joint member 11 may be attached to the tubular body 10 of the PC concrete body P later.
- FIG. 4 is an enlarged view showing a structure in which the reinforcing bar 1 is attached to the formwork 7 in FIG.
- a screw hole 20 is formed in advance on the outer end surface of the male screw body 16 for the formwork.
- the male thread body 16 for the formwork is attached to the formwork 7 by the mounting screw body 6.
- the tubular body 10 is screwed into the male threaded body 16 for the formwork, and the male threaded portion 15 of the reinforcing bar 1 is screwed into the female threaded portion 14 on the inner surface of the tubular body 10. Further, if necessary, it is fixed with a lock nut 30.
- the formwork screw body 16 is omitted, the mounting screw body 16 is lengthened as shown by the two-point chain wire, and the screw is screwed into the screw hole 20A provided on the end face of the reinforcing bar 1.
- the reinforcing bar 1 with the tubular body 10 can be attached to the formwork 7.
- the female threaded portion 14 of the tubular body 10 is exposed to the outside from the end face of the PC concrete body P.
- a pair of connecting members 19 and 19 are applied to the main bodies 12 and 12 of these joint members 11 and 11 from the front and back surfaces, and are held in a sandwich structure.
- the connecting member 19 is made of a flat plate, and six connecting holes 27 are provided at positions corresponding to the through holes 17 of the joint member 11.
- a bolt 25, which is an example of a fastening member, is inserted through a connecting hole 27 of one connecting member 19.
- the tip of the bolt 25 penetrates the through hole 17 of the joint member 11 and protrudes from the connecting hole 27 of the connecting member 19 on the opposite side.
- the tip of the fastening member (bolt) 25 is tightened with the nut 30. Therefore, in this example, the fastening member comprises a bolt 25 and a nut 30.
- the connecting hole 27 is also an oversized hole having an inner diameter several mm larger than the outer diameter of the fastening member 25.
- oversized holes with inner diameters of up to +6 mm and up to +8 mm are allowed for bolts with diameters of 24 mm and 27 mm, respectively.
- the joint members 11 and 11 are held in a sandwich-like structure by the plate-shaped connecting members 19 and 19. Further, six bolts 25 are inserted into the connecting holes 27 of the connecting member 19 and the connecting holes 17 of the joint member 11, and the nut 30 is screwed and fastened to the tip of the bolt via a washer 32, if necessary. ..
- the gap between the PC concrete bodies P and P connected in this way is filled by placing concrete at the site. Therefore, the reinforcing bar joint B is buried in concrete and is not exposed to the outside.
- the reinforcing bar joint B according to the present invention constructed as described above does not use a grout material such as mortar, which is expensive and takes several days to harden, and only requires screw connection, so that the construction cost can be reduced. , The construction period can be shortened.
- the pair of joint members 11 facing each other in FIG. 2 have a main body portion 12 and a joint male thread portion 12, and the main body portions 12, 12 of the pair of joint members 11 face each other in the longitudinal direction and are joined to the connecting member 19.
- the member 11 is detachably connected by the fastening members 25 and 30. This simplifies the connection structure. Therefore, not only the reinforcing bar assembly in the factory but also the reinforcing bar assembly at the construction site can be performed quickly and easily.
- the joint members 11 and 11 are concentric with each other, but as shown in FIG. 7, a core is formed between the axial center X1 of one joint member 11 in the longitudinal direction and the axial center X2 of the other joint member 11.
- a deviation C1 or a positional deviation in the axial direction that is, there may be a variation in the size of the gap S.
- the through hole 17 of the joint member 11 and the connecting hole 27 of the connecting member 19 are excessive holes. By that amount, the displacement of the reinforcing bars 1 and 1 is absorbed and the connection is smooth.
- the main body 12 of the joint member 11 may be oriented in a direction in which the fastening workability is good. In that case, a misalignment may occur in the Z direction shown in FIG. 5, and a gap may be generated between the main body portion 12 and the connecting member 19. A side plate may be inserted into this gap, but even without the side plate, since there is a gap S in the longitudinal direction X between the joint members 11 and 11, the bolt 25 is strongly tightened to connect to the joint member 11.
- the member 19 can be deformed so as to be tilted to eliminate the gap in the Z direction between the two members.
- the structure is such that the main body portion 12 of the joint member 11 is interposed between the pair of connecting members 19 and 19 shown in FIG. 5, the main body portion 12 of the joint member 11 is sandwiched by the pair of connecting members 19 and 19. Since it is firmly held by, the reliability of joining the pair of reinforcing bars 1 and 1 is also improved.
- a plurality of reinforcing bars 1 are arranged in parallel and are connected by stirrups 2.
- a tubular body 10 having a female threaded portion 14 on the inner surface is screwed into a reinforcing bar male threaded portion 15 formed on the reinforcing bar 1, and the reinforcing bar male threaded portion 15 is an axially inner portion of the female threaded portion 14.
- the axially outer portion of the female screw portion 14 is exposed to the outside of the reinforcing bar assembly A.
- the joint member 11 can be easily connected to the reinforcing bar 1 by screwing the joint male thread portion 13 of the joint member 11 into the exposed female thread portion 14.
- the efficiency of the connection work between the reinforcing bars 1 and 1 by the reinforcing bar joint B can be improved.
- work efficiency is improved regardless of whether reinforced concrete structures such as beams and columns are mass-produced in a factory or concrete is placed at a construction site.
- This second embodiment is basically the same as the configuration of the first embodiment shown in FIG. 5, except that the tubular body 10 of the reinforcing bar joint B is not embedded in the PC concrete body P.
- the male threaded portion 15 at the end of the reinforcing bar 1 protrudes from the PC concrete body P, and the tubular body 10 is screwed into the protruding male threaded portion 15 at the construction site.
- the connection structure of the joint member 11 to the tubular body 10 and the connection structure of the joint member 11 and the connection member 19 are the same as those in the first embodiment.
- the male threaded portion 15 of the reinforcing bar 1 is therefore also included within the scope of the present invention.
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- Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
Description
〈鉄筋組立体の構造について〉
図2により鉄筋継手Bについて説明する。同図の分解斜視図に示すように、この鉄筋継手Bは、前述した内面に雌ねじ部14が形成されたカプラーとなる筒状体10と、一端部に継手雄ねじ部13を有する継手部材11と、対向する一対の継手部材11,11同士を接続する接続部材19とを備えている。
梁や柱の配筋となる両鉄筋1,1を鉄筋継手Bで連結するにあたり、まず、図2の筒状体10の雌ねじ部14に継手部材11の継手雄ねじ部13をねじ込む。その際、必要に応じて筒状体10の両端に、図5に示すロックナット31およびワッシャー32を取り付ける。これにより、筒状体10の雌ねじ部14の軸方向内側部分に鉄筋雄ねじ部15が侵入した状態で、他の部分である軸方向外側部分に継手雄ねじ部13が螺合される。
以上のように構成される本発明に係る鉄筋継手Bは、モルタルのような高価で硬化に数日という時間がかかるグラウト材を用いないで、ねじ連結のみで済むから、施工コストの低廉化と、施工の工期短縮化を図ることができる。また、図2の対向する一対の継手部材11は本体部12と継手雄ねじ部12を有し、一対の継手部材11の本体部12,12同士が長手方向に対向した状態で接続部材19と継手部材11とが締結部材25,30によって着脱自在に連結されている。これにより、連結構造が簡単になる。したがって、工場内での鉄筋組立のみならず、工事現場での鉄筋組立も迅速かつ容易に行える。
B…鉄筋継手
P…梁や柱のようなPCコンクリート体
1…鉄筋
2…あばら筋
6…ボルト(締結部材)
7…型枠
10…筒状体
11…継手部材
12…本体部
13…継手雄ねじ部
14…雌ねじ部
15…鉄筋雄ねじ部
17…貫通孔
17a…摩擦調整部
19…接続部材
20…ねじ孔
27…連結孔
30…ナット(締結部材)
Claims (5)
- 長手方向に対向する一対の鉄筋の端部を相互に接続する鉄筋継手であって、
内面に雌ねじ部が形成された筒状体と
一端部に継手雄ねじ部を有する継手部材と、
対向する一対の継手部材同士を長手方向およびその直交方向に変位可能に接続する接続部材とを備え、
前記筒状体の一端部に一方の前記鉄筋の端部に形成された鉄筋雄ねじ部が螺合され、他端部に前記継手部材の一端部の前記継手雄ねじ部が螺合される鉄筋継手。 - 請求項1に記載の鉄筋継手において、前記継手部材は本体部と前記継手雄ねじ部とを有し、前記一対の継手部材の本体部同士が長手方向に対向した状態で前記接続部材と前記継手部材とが締結部材によって着脱自在に連結されている鉄筋継手。
- 請求項2に記載の鉄筋継手において、前記一対の接続部材の間に前記継手部材の本体部が介在している鉄筋継手。
- 複数本の鉄筋が平行に配筋され、あばら筋で結合された鉄筋組み立て体であって、
前記鉄筋の端部に形成された雄ねじ部に、内面に雌ねじ部を有する筒状体が螺合されて、前記鉄筋雄ねじ部が前記雌ねじ部の軸方向内側部分に侵入し、前記雌ねじ部の軸方向外側部分が外部に露出している鉄筋組立体。 - 請求項1から3のいずれか一項に記載の鉄筋継手において、鉄筋継手における前記筒状体と前記鉄筋がコンクリートに埋め込まれ、前記筒状体の外端面の雌ねじ部が前記コンクリートの端面から露出しているプレキャスト鉄筋コンクリート体。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201980098695.2A CN114144558A (zh) | 2019-07-24 | 2019-07-24 | 钢筋接头、钢筋组装体以及预制钢筋混凝土体 |
KR1020217043431A KR20220012950A (ko) | 2019-07-24 | 2019-07-24 | 철근 조인트 및 철근 조립체, 및 프리캐스트 철근 콘크리트체 |
PCT/JP2019/029052 WO2021014616A1 (ja) | 2019-07-24 | 2019-07-24 | 鉄筋継手および鉄筋組立体、並びにプレキャスト鉄筋コンクリート体 |
US17/570,987 US20220127838A1 (en) | 2019-07-24 | 2022-01-07 | Steel reinforced joint, steel reinforced assembly, and precast steel reinforced concrete body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2019/029052 WO2021014616A1 (ja) | 2019-07-24 | 2019-07-24 | 鉄筋継手および鉄筋組立体、並びにプレキャスト鉄筋コンクリート体 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US17/570,987 Continuation US20220127838A1 (en) | 2019-07-24 | 2022-01-07 | Steel reinforced joint, steel reinforced assembly, and precast steel reinforced concrete body |
Publications (1)
Publication Number | Publication Date |
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WO2021014616A1 true WO2021014616A1 (ja) | 2021-01-28 |
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PCT/JP2019/029052 WO2021014616A1 (ja) | 2019-07-24 | 2019-07-24 | 鉄筋継手および鉄筋組立体、並びにプレキャスト鉄筋コンクリート体 |
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US (1) | US20220127838A1 (ja) |
KR (1) | KR20220012950A (ja) |
CN (1) | CN114144558A (ja) |
WO (1) | WO2021014616A1 (ja) |
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US11952768B1 (en) * | 2022-10-19 | 2024-04-09 | North China University Of Science And Technology | Fabricated concrete connection structure and construction method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02308042A (ja) * | 1989-05-20 | 1990-12-21 | Sekisui House Ltd | プレキャストコンクリート部材の接合用具 |
US5669196A (en) * | 1996-02-13 | 1997-09-23 | Dahl; Kjell L. | Eye bolt reinforcement steel coupler |
JP2019082027A (ja) * | 2017-10-30 | 2019-05-30 | 章 福田 | 鉄筋継手・鉄筋組立体・およびプレキャスト鉄筋コンクリート体 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2668558B1 (fr) * | 1990-10-29 | 1993-08-13 | Arteon Marcel | Dispositif de liaison pour reunir bout a bout deux barres. |
JPH05156721A (ja) * | 1991-08-05 | 1993-06-22 | Nippon Splice Sleeve Kk | プレキャスト鉄筋コンクリート板部材接合法 |
JP2002138493A (ja) * | 2000-11-01 | 2002-05-14 | Ikeda Hiromi | 建築用コンクリート基礎の連結構造 |
JP4852378B2 (ja) | 2006-09-04 | 2012-01-11 | 合同製鐵株式会社 | 鉄筋継手用ハーフスリーブ、該ハーフスリーブを使用した継手およびプレキャスト鉄筋コンクリート成形品 |
KR101595101B1 (ko) * | 2015-08-12 | 2016-02-18 | 한상도 | Pc블럭 또는 콘크리트용 철근 편심연결구와 이를 이용한 철근연결방법 |
CN106677434B (zh) * | 2017-01-13 | 2018-03-09 | 沈阳建筑大学 | 分离式冷挤压钢筋套筒 |
-
2019
- 2019-07-24 WO PCT/JP2019/029052 patent/WO2021014616A1/ja active Application Filing
- 2019-07-24 KR KR1020217043431A patent/KR20220012950A/ko not_active Application Discontinuation
- 2019-07-24 CN CN201980098695.2A patent/CN114144558A/zh active Pending
-
2022
- 2022-01-07 US US17/570,987 patent/US20220127838A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02308042A (ja) * | 1989-05-20 | 1990-12-21 | Sekisui House Ltd | プレキャストコンクリート部材の接合用具 |
US5669196A (en) * | 1996-02-13 | 1997-09-23 | Dahl; Kjell L. | Eye bolt reinforcement steel coupler |
JP2019082027A (ja) * | 2017-10-30 | 2019-05-30 | 章 福田 | 鉄筋継手・鉄筋組立体・およびプレキャスト鉄筋コンクリート体 |
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KR20220012950A (ko) | 2022-02-04 |
CN114144558A (zh) | 2022-03-04 |
US20220127838A1 (en) | 2022-04-28 |
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