JP7360335B2 - Reinforcing bar unit and manufacturing method of reinforcing bar unit - Google Patents

Reinforcing bar unit and manufacturing method of reinforcing bar unit Download PDF

Info

Publication number
JP7360335B2
JP7360335B2 JP2020013917A JP2020013917A JP7360335B2 JP 7360335 B2 JP7360335 B2 JP 7360335B2 JP 2020013917 A JP2020013917 A JP 2020013917A JP 2020013917 A JP2020013917 A JP 2020013917A JP 7360335 B2 JP7360335 B2 JP 7360335B2
Authority
JP
Japan
Prior art keywords
core material
reinforcing bars
reinforcing
reinforcing bar
around
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2020013917A
Other languages
Japanese (ja)
Other versions
JP2021120520A (en
Inventor
哲也 河野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kajima Corp
Original Assignee
Kajima Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kajima Corp filed Critical Kajima Corp
Priority to JP2020013917A priority Critical patent/JP7360335B2/en
Publication of JP2021120520A publication Critical patent/JP2021120520A/en
Application granted granted Critical
Publication of JP7360335B2 publication Critical patent/JP7360335B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Description

本発明は、鉄筋ユニット及び鉄筋ユニットの製造方法に関する。 The present invention relates to a reinforcing bar unit and a method for manufacturing a reinforcing bar unit.

長手方向が互いに平行になるようにしつつ、その長手方向に直交する方向に互いに間隔を隔てて配置された複数の鉄筋と、間隔を隔てて配置された互いに隣接する鉄筋を連結する間隔保持線と、間隔保持線により連結された複数の鉄筋がその周りに巻き付けられた芯材とを備えた鉄筋ユニットが知られている。例えば、特許文献１には、芯材の端部に備えられたハンドルを回転させて、芯材を作業台上で鉄筋の長手方向に直交する方向に転がしながら、間隔保持線により連結された複数の鉄筋を芯材に巻き付けて鉄筋ユニットを製造することが開示されている。 A plurality of reinforcing bars arranged at intervals in a direction perpendicular to the longitudinal direction while making the longitudinal directions parallel to each other, and a spacing line connecting adjacent reinforcing bars arranged at intervals. 2. Description of the Related Art A reinforcing bar unit is known that includes a core material around which a plurality of reinforcing bars connected by spacing lines are wound. For example, in Patent Document 1, a handle provided at the end of the core material is rotated to roll the core material on a workbench in a direction perpendicular to the longitudinal direction of the reinforcing steel, and a plurality of core materials are connected by a spacing line. It is disclosed that a reinforcing bar unit is manufactured by winding reinforcing bars around a core material.

特開２００７‐６３９３８号公報Japanese Patent Application Publication No. 2007-63938

ところで、上記のような技術では、芯材の端部から視て、鉄筋ユニットの形状が凹凸が多い形状になることがある。このような形状の鉄筋ユニットでは、鉄筋の配置場所で鉄筋ユニットが転がされ、鉄筋ユニットの芯材に巻き付けられた鉄筋が展開される際には、鉄筋ユニットが上下動することになる。このため、鉄筋の展開に大きな力が必要となる。 By the way, in the above technique, the reinforcing bar unit may have a shape with many irregularities when viewed from the end of the core material. In a reinforcing bar unit having such a shape, the reinforcing bar unit is rolled at the location where the reinforcing bars are arranged, and when the reinforcing bars wound around the core of the reinforcing bar unit are unfolded, the reinforcing bar unit moves up and down. Therefore, a large force is required to expand the reinforcing bars.

そこで本発明は、鉄筋の配置をより容易に行うことができる鉄筋ユニット及びそのような鉄筋ユニットの製造方法を提供することを目的とする。 SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a reinforcing bar unit in which reinforcing bars can be arranged more easily, and a method for manufacturing such a reinforcing bar unit.

本発明は、その長手方向が互いに平行になるようにしつつ、その長手方向に直交する方向に互いに間隔を隔てて配置された複数の鉄筋と、間隔を隔てて配置された互いに隣接する鉄筋を連結する間隔保持線と、間隔保持線により連結された複数の鉄筋がその周りに巻き付けられた芯材とを備え、芯材の周りに１周目に巻き付けられた鉄筋のそれぞれの芯材の回転方向の側に、芯材の周りに２周目に巻き付けられた鉄筋のそれぞれが隣接しており、芯材の周りに２周目に巻き付けられた鉄筋のそれぞれの芯材の回転方向の側に、芯材の周りに３周目に巻き付けられた鉄筋のそれぞれが隣接しており、芯材の周りに３周目に巻き付けられた鉄筋のそれぞれの芯材の回転方向の側に、芯材の周りに４周目に巻き付けられた鉄筋のそれぞれが隣接している鉄筋ユニットである。 The present invention connects a plurality of reinforcing bars arranged at intervals in a direction perpendicular to the longitudinal direction and adjacent reinforcing bars arranged at intervals while making the longitudinal directions parallel to each other. and a core material around which a plurality of reinforcing bars connected by the spacing maintenance lines are wound, and the direction of rotation of each core material of the reinforcing bars wrapped around the core material in the first turn. The reinforcing bars wrapped around the core material for the second time are adjacent to each other, and the reinforcing bars wrapped for the second time around the core material are adjacent to each other on the side in the direction of rotation of the core material. Each of the rebars wrapped a third time around the core is adjacent, and each of the rebars wrapped a third time around the core is on the rotational side of the core. Each of the reinforcing bars wrapped in the fourth turn is an adjacent reinforcing bar unit.

この構成によれば、その長手方向が互いに平行になるようにしつつ、その長手方向に直交する方向に互いに間隔を隔てて配置された複数の鉄筋と、間隔を隔てて配置された互いに隣接する鉄筋を連結する間隔保持線と、間隔保持線により連結された複数の鉄筋がその周りに巻き付けられた芯材とを備えた鉄筋ユニットにおいて、芯材の中心から外側への視点で視て、芯材の周りに巻き付けられた鉄筋は互いに重なっていない。そのため、芯材の端部から視て、鉄筋ユニットの形状が凹凸がより少ない真円に近い形状になり、鉄筋の展開に必要な力が低減され、鉄筋の配置をより容易に行うことができる。 According to this configuration, a plurality of reinforcing bars are arranged at intervals from each other in a direction perpendicular to the longitudinal direction while their longitudinal directions are parallel to each other, and reinforcing bars adjacent to each other are arranged at intervals. In a reinforcing bar unit that includes a spacing line that connects the spacing lines, and a core material around which a plurality of reinforcing bars connected by the spacing line are wrapped, the core material The reinforcing bars wrapped around do not overlap each other. Therefore, when viewed from the end of the core material, the shape of the reinforcing bar unit becomes close to a perfect circle with fewer irregularities, reducing the force required to deploy the reinforcing bars, and making it easier to place the reinforcing bars. .

また、本発明は、その長手方向が互いに平行になるようにしつつ、その長手方向に直交する方向に互いに間隔を隔てて配置された複数の鉄筋と、間隔を隔てて配置された互いに隣接する鉄筋を連結する間隔保持線と、間隔保持線により連結された複数の鉄筋がその周りに巻き付けられた芯材とを備え、芯材の周りに１周目に巻き付けられた鉄筋を連結する間隔保持線の長さは、芯材の周りに２周目以降に巻き付けられた鉄筋を連結する間隔保持線の長さよりも短い鉄筋ユニットである。 Further, the present invention provides a plurality of reinforcing bars arranged at intervals in a direction perpendicular to the longitudinal direction while the longitudinal directions thereof are parallel to each other, and reinforcing bars adjacent to each other arranged at intervals. A spacing line that connects the reinforcing bars connected by the spacing line, and a core material around which a plurality of reinforcing bars connected by the spacing line are wrapped, and connecting the reinforcing bars wrapped in the first round around the core material. The length of the reinforcing bar unit is shorter than the length of the spacing line that connects the reinforcing bars wrapped around the core material from the second turn onwards.

この構成によれば、その長手方向が互いに平行になるようにしつつ、その長手方向に直交する方向に互いに間隔を隔てて配置された複数の鉄筋と、間隔を隔てて配置された互いに隣接する鉄筋を連結する間隔保持線と、間隔保持線により連結された複数の鉄筋がその周りに巻き付けられた芯材とを備えた鉄筋ユニットにおいて、芯材の周りに１周目に巻き付けられた鉄筋を連結する間隔保持線の長さは、芯材の周りに２周目以降に巻き付けられた鉄筋を連結する間隔保持線の長さよりも短い。これにより、芯材の中心から外側への視点で視て、芯材の周りに巻き付けられた鉄筋が互いに重なり難くなる。そのため、芯材の端部から視て、鉄筋ユニットの形状が凹凸がより少ない真円に近い形状になり、鉄筋の展開に必要な力が低減され、鉄筋の配置をより容易に行うことができる。 According to this configuration, a plurality of reinforcing bars are arranged at intervals from each other in a direction perpendicular to the longitudinal direction while their longitudinal directions are parallel to each other, and reinforcing bars adjacent to each other are arranged at intervals. In a reinforcing bar unit that includes a spacing line that connects the spacing lines, and a core material around which multiple reinforcing bars connected by the spacing line are connected, the reinforcing bars that are wrapped around the core material in the first turn are connected. The length of the spacing line is shorter than the length of the spacing line that connects the reinforcing bars wound around the core material from the second turn onward. This makes it difficult for the reinforcing bars wound around the core material to overlap each other when viewed from the perspective outward from the center of the core material. Therefore, when viewed from the end of the core material, the shape of the reinforcing bar unit becomes close to a perfect circle with fewer irregularities, reducing the force required to deploy the reinforcing bars, and making it easier to place the reinforcing bars. .

また、芯材の周りに巻き付けられた互いに隣接する周回の鉄筋のそれぞれは、芯材の中心から外側への視点で視て、一対一で互いに対応するように隣接していることが好適である。 Further, it is preferable that each of the reinforcing bars in adjacent circumferences wrapped around the core material are adjacent to each other in one-to-one correspondence when viewed from the center of the core material to the outside. .

この構成によれば、芯材の周りに巻き付けられた互いに隣接する周回の鉄筋のそれぞれは、芯材の中心から外側への視点で視て、一対一で互いに対応するように隣接しているため、芯材の中心から外側への視点で視て、芯材の周りに巻き付けられた鉄筋が互いに重ならないような間隔保持線の長さを算出することがより容易となる。 According to this configuration, each of the circumferential reinforcing bars that are wound around the core material and that are adjacent to each other are adjacent to each other so that they correspond to each other on a one-to-one basis when viewed from the perspective outward from the center of the core material. , it becomes easier to calculate the length of the spacing line so that the reinforcing bars wound around the core do not overlap each other when viewed from the perspective outward from the center of the core.

また、芯材の中心から外側への視点で視て、芯材の周りに１周目から少なくとも３周目までに巻き付けられた鉄筋は互いに重なっていないことが好適である。 Further, when viewed from the perspective outward from the center of the core material, it is preferable that the reinforcing bars wound around the core material from the first to at least the third revolution do not overlap with each other.

この構成によれば、芯材の中心から外側への視点で視て、芯材の周りに１周目から少なくとも３周目までに巻き付けられた鉄筋は互いに重なっておらず、芯材の端部から視た鉄筋ユニットの形状の凹凸に大きな影響を与える芯材に近い周回の鉄筋が互いに重なっていないため、芯材の端部から視て、鉄筋ユニットの形状が凹凸がより少ない真円に近い形状になり易く、鉄筋の展開に必要な力が低減され、鉄筋の配置をより容易に行うことができる。 According to this configuration, when viewed from the outside from the center of the core material, the reinforcing bars wrapped around the core material from the first turn to at least the third turn do not overlap each other, and the ends of the core material Since the reinforcing bars surrounding the core material do not overlap each other, which has a large effect on the unevenness of the shape of the reinforcing bar unit when viewed from the end, the shape of the reinforcing bar unit is close to a perfect circle with fewer irregularities when viewed from the end of the core material. It is easier to shape, the force required to deploy the reinforcing bars is reduced, and the reinforcing bars can be placed more easily.

また、本発明は、複数の鉄筋の長手方向が互いに平行になるようにしつつ、複数の鉄筋の長手方向に直交する方向に互いに間隔を隔てて複数の鉄筋を配置する鉄筋配置工程と、鉄筋配置工程で間隔を隔てて配置された互いに隣接する鉄筋を間隔保持線により連結する鉄筋連結工程と、鉄筋連結工程で間隔保持線により連結された複数の鉄筋を芯材の周りに巻き付ける鉄筋巻付工程とを備え、鉄筋巻付工程では、芯材の周りに１周目に巻き付けられた鉄筋のそれぞれの芯材の回転方向の側に、芯材の周りに２周目に巻き付けられた鉄筋のそれぞれが隣接し、芯材の周りに２周目に巻き付けられた鉄筋のそれぞれの芯材の回転方向の側に、芯材の周りに３周目に巻き付けられた鉄筋のそれぞれが隣接し、芯材の周りに３周目に巻き付けられた鉄筋のそれぞれの芯材の回転方向の側に、芯材の周りに４周目に巻き付けられた鉄筋のそれぞれが隣接するように、芯材の周りに鉄筋を巻き付ける鉄筋ユニットの製造方法である。 Further, the present invention provides a reinforcing bar arrangement step of arranging a plurality of reinforcing bars at intervals in a direction orthogonal to the longitudinal direction of the plurality of reinforcing bars while making the longitudinal directions of the plurality of reinforcing bars parallel to each other; A reinforcing bar connecting process in which adjacent reinforcing bars arranged at intervals are connected by spacing lines, and a reinforcing bar wrapping process in which multiple reinforcing bars connected by spacing lines are wrapped around a core material in the reinforcing bar connecting process. In the reinforcing bar wrapping process, each of the reinforcing bars wrapped around the core material in the second round is placed on the side in the rotation direction of the core material of each of the reinforcing bars wrapped around the core material in the first round. are adjacent to each other, and each of the reinforcing bars wrapped around the core material in the third round is adjacent to the side in the rotation direction of the core material, and each of the reinforcing bars wrapped around the core material in the third round is adjacent to the core material. The reinforcing bars are wrapped around the core material so that each of the reinforcing bars wrapped around the core material for the fourth time is adjacent to the side in the direction of rotation of the core material of each of the reinforcing bars wrapped around the core material for the third time . This is a method of manufacturing a reinforcing bar unit that is wrapped around.

また、本発明は、複数の鉄筋の長手方向が互いに平行になるようにしつつ、複数の鉄筋の長手方向に直交する方向に互いに間隔を隔てて複数の鉄筋を配置する鉄筋配置工程と、鉄筋配置工程で間隔を隔てて配置された互いに隣接する鉄筋を間隔保持線により連結する鉄筋連結工程と、鉄筋連結工程で間隔保持線により連結された複数の鉄筋を芯材の周りに巻き付ける鉄筋巻付工程とを備え、鉄筋配置工程では、鉄筋巻付工程で芯材の周りに１周目に巻き付けられる鉄筋の間隔が、鉄筋巻付工程で芯材の周りに２周目以降に巻き付けられる鉄筋の間隔よりも短くなるように鉄筋を配置し、鉄筋連結工程では、鉄筋巻付工程で芯材の周りに１周目に巻き付けられる鉄筋を連結する間隔保持線の長さが、鉄筋巻付工程で芯材の周りに２周目以降に巻き付けられる鉄筋を連結する間隔保持線の長さよりも短くなるように鉄筋を間隔保持線により連結する鉄筋ユニットの製造方法である。 Further, the present invention provides a reinforcing bar arrangement step of arranging a plurality of reinforcing bars at intervals in a direction orthogonal to the longitudinal direction of the plurality of reinforcing bars while making the longitudinal directions of the plurality of reinforcing bars parallel to each other; A reinforcing bar connecting process in which adjacent reinforcing bars arranged at intervals are connected by spacing lines, and a reinforcing bar wrapping process in which multiple reinforcing bars connected by spacing lines are wrapped around a core material in the reinforcing bar connecting process. In the reinforcing bar arrangement process, the interval between the reinforcing bars that is wrapped around the core material in the first round in the reinforcing bar wrapping process is the same as the interval between the reinforcing bars that are wrapped around the core material in the second and subsequent rounds in the reinforcing bar wrapping process. In the reinforcing bar connection process, the length of the spacing line that connects the reinforcing bars that is wrapped around the core material in the first round in the reinforcing bar wrapping process is This is a method for manufacturing a reinforcing bar unit in which reinforcing bars are connected by a spacing line so that the length is shorter than the length of the spacing line that connects the reinforcing bars that are wound around the material from the second turn onwards.

本発明の鉄筋ユニット及び鉄筋ユニットの製造方法によれば、鉄筋の配置をより容易に行うことができる。 According to the reinforcing bar unit and the method for manufacturing a reinforcing bar unit of the present invention, reinforcing bars can be arranged more easily.

第１実施形態の鉄筋ユニットを示す斜視図である。It is a perspective view showing a reinforcement unit of a 1st embodiment. 第１実施形態の鉄筋ユニット及び第１実施形態の鉄筋ユニットの製造方法の鉄筋巻付工程を示す側面図である。It is a side view which shows the reinforcing bar wrapping process of the manufacturing method of the reinforcing bar unit of 1st Embodiment, and the reinforcing bar unit of 1st Embodiment. 第１実施形態の鉄筋ユニットの製造方法の鉄筋配置工程を示す側面図である。FIG. 3 is a side view showing a reinforcing bar arrangement step in the method for manufacturing a reinforcing bar unit according to the first embodiment. 第１実施形態の鉄筋ユニットの製造方法の鉄筋連結工程を示す側面図である。It is a side view showing the reinforcing bar connection process of the manufacturing method of the reinforcing bar unit of a 1st embodiment. 第２実施形態の鉄筋ユニット及び第２実施形態の鉄筋ユニットの製造方法の鉄筋巻付工程の２周目以降を示す側面図である。It is a side view which shows the reinforcing bar wrapping process of the reinforcing bar unit of 2nd Embodiment, and the manufacturing method of the reinforcing bar unit of 2nd Embodiment from the 2nd round. 第２実施形態の鉄筋ユニットの製造方法の鉄筋配置工程を示す側面図である。It is a side view which shows the reinforcing bar arrangement process of the manufacturing method of the reinforcing bar unit of 2nd Embodiment. 第２実施形態の鉄筋ユニットの製造方法の鉄筋連結工程を示す側面図である。It is a side view which shows the reinforcing bar connection process of the manufacturing method of the reinforcing bar unit of 2nd Embodiment. 第２実施形態の鉄筋ユニット及び第２実施形態の鉄筋ユニットの製造方法の鉄筋巻付工程の１周目を示す側面図である。It is a side view which shows the 1st turn of the reinforcing bar winding process of the manufacturing method of the reinforcing bar unit of 2nd Embodiment, and the reinforcing bar unit of 2nd Embodiment.

以下、図面を参照しつつ本発明に係る鉄筋ユニット及び鉄筋ユニットの製造方法について詳細に説明する。図１及び図２に示されるように、本発明の第１実施形態の鉄筋ユニット１Ａは、鉄筋２、間隔保持線３及び芯材４を備えている。鉄筋２は、その長手方向Ｙが互いに平行になるようにしつつ、その長手方向Ｙに直交する方向である幅方向Ｘに互いに間隔ｐを隔てて配置されている。 Hereinafter, a reinforcing bar unit and a method for manufacturing a reinforcing bar unit according to the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 and 2, a reinforcing bar unit 1A according to the first embodiment of the present invention includes reinforcing bars 2, spacing lines 3, and a core material 4. The reinforcing bars 2 are arranged so that their longitudinal directions Y are parallel to each other and are spaced apart from each other in a width direction X, which is a direction perpendicular to the longitudinal direction Y.

間隔保持線３は、間隔ｐを隔てて配置された互いに隣接する鉄筋２を連結する。本実施形態では、間隔保持線３は、間隔保持線３のキンクのし難さと鉄筋ユニット１Ａの展開のし易さしやすさとを考慮し、硬さや剛性を考慮して決定される。間隔保持線３は、例えば、番線（鈍し鉄線）である。番線は、加熱した後に徐々に冷やす焼き鈍ましによって得られる比較的柔らかい鉄線である。 The spacing line 3 connects mutually adjacent reinforcing bars 2 arranged at a spacing p. In this embodiment, the spacing line 3 is determined in consideration of the difficulty of the spacing line 3 to kink, the ease of deployment of the reinforcing bar unit 1A, and the hardness and rigidity. The spacing line 3 is, for example, a wire (dulled iron wire). Braid wire is a relatively soft iron wire obtained by annealing, which involves heating and then gradually cooling.

例えば、鉄筋２の径がＤ１０～Ｄ２２までは、１４番（線径２．０ｍｍ）の番線である間隔保持線３が使用される。１４番の番線である間隔保持線３は、例えば、線径２．０±０．０５ｍｍ、引張強さ２９０～５４０Ｎ／ｍｍ２、亜鉛付着量２５ｇ／ｍ２である。また、例えば、鉄筋２の径がＤ２５～Ｄ３２までは、１２番（線径２．６ｍｍ）の番線である間隔保持線３が使用される。 For example, when the diameter of the reinforcing bar 2 is from D10 to D22, the distance maintaining wire 3, which is a No. 14 wire (wire diameter 2.0 mm), is used. The spacing wire 3, which is the No. 14 wire, has, for example, a wire diameter of 2.0±0.05 mm, a tensile strength of 290 to 540 N/mm 2 , and a zinc coating amount of 25 g/m 2 . Further, for example, when the diameter of the reinforcing bar 2 is from D25 to D32, the distance maintaining wire 3, which is a No. 12 wire (wire diameter 2.6 mm), is used.

芯材４は、間隔保持線３により連結された複数の鉄筋２がその周りに複数の層をなすように巻き付けられる。芯材４は、鋼製の線材が円柱の側面で螺旋状をなすように湾曲させられることにより形成された螺旋線材５と、鉄筋２が掛けられるフック部６とを有する。なお、鉄筋ユニット１の鉄筋２の数が少ない、鉄筋２の重量が軽い等の状況に応じて、フック部６は省略されてもよい。 A plurality of reinforcing bars 2 connected by spacing lines 3 are wound around the core material 4 so as to form a plurality of layers. The core material 4 includes a spiral wire material 5 formed by bending a steel wire material into a spiral shape on the side surface of a cylinder, and a hook portion 6 on which the reinforcing bar 2 is hung. Note that the hook portion 6 may be omitted depending on the situation, such as when the number of reinforcing bars 2 in the reinforcing bar unit 1 is small or the weight of the reinforcing bars 2 is light.

図２に示されるように、本実施形態では、芯材４の中心Ｃから外側への視点で視て、芯材４の周りに巻き付けられた鉄筋２は互いに重なっていない。芯材４の周りに巻き付けられた互いに隣接する周回の鉄筋２のそれぞれは、芯材４の中心Ｃから外側への視点で視て、一対一で互いに対応するように隣接している。 As shown in FIG. 2, in this embodiment, the reinforcing bars 2 wound around the core material 4 do not overlap each other when viewed from the perspective outward from the center C of the core material 4. The mutually adjacent reinforcing bars 2 wound around the core material 4 are adjacent to each other in one-to-one correspondence when viewed from the perspective outward from the center C of the core material 4.

つまり、芯材４の周りに１周目に巻き付けられた鉄筋２のそれぞれの芯材４の回転方向の側に、芯材４の周りに２周目に巻き付けられた鉄筋２のそれぞれが隣接している。同様に、芯材４の周りに２周目に巻き付けられた鉄筋２のそれぞれの芯材４の回転方向の側に、芯材４の周りに３周目に巻き付けられた鉄筋２のそれぞれが隣接している。芯材４の周りに３周目に巻き付けられた鉄筋２のそれぞれの芯材４の回転方向の側に、芯材４の周りに４周目に巻き付けられた鉄筋２のそれぞれが隣接している。 In other words, each of the reinforcing bars 2 wrapped around the core material 4 in the second round is adjacent to the side in the rotation direction of the core material 4 of each of the reinforcing bars 2 wrapped around the core material 4 in the first round. ing. Similarly, each of the reinforcing bars 2 that was wrapped around the core material 4 for the third time is adjacent to the side in the rotation direction of the core material 4 of each of the reinforcing bars 2 that was wrapped for the second time around the core material 4. are doing. Each of the reinforcing bars 2 that was wrapped around the core material 4 for the fourth time is adjacent to the side in the rotation direction of the core material 4 of each of the reinforcing bars 2 that was wrapped for the third time around the core material 4. .

このため、本実施形態の鉄筋ユニット１では、芯材４の中心Ｃから外側への視点で視て、芯材４の周りに１周目から少なくとも３周目までに巻き付けられた鉄筋２は互いに重なっていない。 Therefore, in the reinforcing bar unit 1 of the present embodiment, the reinforcing bars 2 wound around the core material 4 from the first to at least the third turn are mutually connected to each other when viewed from the perspective outward from the center C of the core material 4. They don't overlap.

以下、本実施形態の鉄筋ユニット１Ａの製造方法について説明する。図３に示されるように、複数の鉄筋２の長手方向Ｙが互いに平行になるようにしつつ、複数の鉄筋２の長手方向Ｙに直交する方向である幅方向Ｘに互いに間隔ｐを隔てて複数の鉄筋２を配置する鉄筋配置工程が実行される。図４に示されるように、鉄筋配置工程で間隔ｐを隔てて配置された互いに隣接する鉄筋２を間隔保持線３により連結する鉄筋連結工程が実行される。 Hereinafter, a method for manufacturing the reinforcing bar unit 1A of this embodiment will be described. As shown in FIG. 3, while the longitudinal direction Y of the plurality of reinforcing bars 2 is parallel to each other, a plurality of reinforcing bars 2 are arranged at intervals p in the width direction X, which is a direction perpendicular to the longitudinal direction Y. A reinforcing bar placement process is executed to place the reinforcing bars 2. As shown in FIG. 4, in the reinforcing bar arrangement process, a reinforcing bar connecting process is performed in which mutually adjacent reinforcing bars 2 arranged at an interval p are connected by a spacing line 3.

本実施形態の鉄筋ユニット１Ａでは、互いに隣接する鉄筋２のそれぞれの間隔ｐは略等しい。この場合、芯材４の中心Ｃから外側への視点で視て、芯材４の周りに巻き付けられた鉄筋２が互いに重ならないようにするためには、例えば、以下の式（１）を満たせばよい。式（１）において、Ｐは鉄筋２のピッチであり、ｎは芯材４に１周ごとに巻き付けられる鉄筋２の本数であり、Ｄは鉄筋の直径であり、ｄは任意に設定される余裕（マージン）であり、ｌは芯材４に１周ごとに巻き付けられる鉄筋２と間隔保持線３とを合わせた周長である。
ピッチＰ×本数ｎ＋直径Ｄ＋余裕ｄ＝周長ｌ …（１） In the reinforcing bar unit 1A of this embodiment, the intervals p between mutually adjacent reinforcing bars 2 are approximately equal. In this case, in order to prevent the reinforcing bars 2 wrapped around the core material 4 from overlapping each other when viewed from the perspective outward from the center C of the core material 4, for example, the following formula (1) must be satisfied. Bye. In formula (1), P is the pitch of the reinforcing bars 2, n is the number of reinforcing bars 2 wrapped around the core material 4 each time, D is the diameter of the reinforcing bars, and d is an arbitrarily set margin. (margin), and l is the total circumferential length of the reinforcing bar 2 that is wound around the core material 4 every turn and the spacing line 3.
Pitch P x number n + diameter D + margin d = circumference l...(1)

上記の式（１）を満たすように、鉄筋配置工程及び鉄筋連結工程が実行された後に、図２に示されるように、間隔保持線３により連結された複数の鉄筋２の内の一方の端部の鉄筋２が芯材４のフック部６に掛けられた状態で芯材４が回転させられることにより、鉄筋連結工程で間隔保持線３により連結された複数の鉄筋２を芯材４の周りに巻き付ける鉄筋巻付工程が実行される。鉄筋巻付工程では、芯材４の中心Ｃから外側への視点で視て、芯材４の周りに巻き付けられた鉄筋２は互いに重ならないように芯材４の周りに鉄筋が巻き付けられる。 After the reinforcing bar placement process and the reinforcing bar connection process are performed so as to satisfy the above formula (1), one end of the plurality of reinforcing bars 2 connected by the spacing line 3 as shown in FIG. By rotating the core material 4 with the reinforcing bars 2 of the parts hooked on the hook parts 6 of the core material 4, the plurality of reinforcing bars 2 connected by the spacing lines 3 are connected around the core material 4 in the reinforcing bar connection process. A reinforcing bar wrapping process is performed. In the reinforcing bar wrapping step, the reinforcing bars are wrapped around the core material 4 so that the reinforcing bars 2 wrapped around the core material 4 do not overlap each other when viewed from the perspective outward from the center C of the core material 4.

本実施形態によれば、その長手方向Ｙが互いに平行になるようにしつつ、その長手方向Ｙに直交する方向である幅方向Ｘに互いに間隔ｐを隔てて配置された複数の鉄筋２と、間隔ｐを隔てて配置された互いに隣接する鉄筋２を連結する間隔保持線３と、間隔保持線３により連結された複数の鉄筋２がその周りに巻き付けられた芯材４とを備えた鉄筋ユニット１Ａにおいて、芯材４の中心Ｃから外側への視点で視て、芯材４の周りに巻き付けられた鉄筋２は互いに重なっていない。そのため、芯材４の端部から視て、鉄筋ユニット１Ａの形状が凹凸がより少ない真円に近い形状になり、鉄筋２の展開に必要な力が低減され、鉄筋２の配置をより容易に行うことができる。 According to the present embodiment, a plurality of reinforcing bars 2 are arranged at intervals p from each other in a width direction X, which is a direction perpendicular to the longitudinal direction Y, while making the longitudinal direction Y parallel to each other. A reinforcing bar unit 1A includes a spacing line 3 that connects mutually adjacent reinforcing bars 2 arranged at a distance p, and a core material 4 around which a plurality of reinforcing bars 2 connected by the spacing line 3 are wound. , the reinforcing bars 2 wound around the core material 4 do not overlap each other when viewed from the perspective outward from the center C of the core material 4. Therefore, when viewed from the end of the core material 4, the shape of the reinforcing bar unit 1A becomes a shape close to a perfect circle with fewer irregularities, the force required to deploy the reinforcing bars 2 is reduced, and the placement of the reinforcing bars 2 is made easier. It can be carried out.

また、本実施形態によれば、芯材４の周りに巻き付けられた互いに隣接する周回の鉄筋２のそれぞれは、芯材４の中心Ｃから外側への視点で視て、一対一で互いに対応するように隣接しているため、芯材４の中心Ｃから外側への視点で視て、芯材４の周りに巻き付けられた鉄筋２が互いに重ならないような間隔保持線３の長さを算出することがより容易となる。 Further, according to the present embodiment, the reinforcing bars 2 that are adjacent to each other and are wound around the core material 4 correspond to each other on a one-to-one basis when viewed from the outside from the center C of the core material 4. Because they are adjacent to each other, the length of the spacing line 3 is calculated so that the reinforcing bars 2 wrapped around the core material 4 do not overlap each other when viewed from the perspective outward from the center C of the core material 4. It becomes easier.

また、本実施形態によれば、芯材４の中心Ｃから外側への視点で視て、芯材４の周りに１周目から少なくとも３周目までに巻き付けられた鉄筋２は互いに重なっておらず、芯材４の端部から視た鉄筋ユニット１Ａの形状の凹凸に大きな影響を与える芯材４に近い周回の鉄筋２が互いに重なっていないため、芯材４の端部から視て、鉄筋ユニット１Ａの形状が凹凸がより少ない真円に近い形状になり易く、鉄筋２の展開に必要な力が低減され、鉄筋２の配置をより容易に行うことができる。 Further, according to the present embodiment, the reinforcing bars 2 wound around the core material 4 from the first to at least the third revolution do not overlap each other when viewed from the perspective outward from the center C of the core material 4. First, since the reinforcing bars 2 surrounding the core 4, which have a large effect on the unevenness of the shape of the reinforcing bar unit 1A when viewed from the end of the core 4, do not overlap each other, the reinforcing bars 2 when viewed from the end of the core 4 do not overlap each other. The shape of the unit 1A tends to be close to a perfect circle with fewer irregularities, the force required for deploying the reinforcing bars 2 is reduced, and the reinforcing bars 2 can be arranged more easily.

以下、本発明の第２実施形態について説明する。図５に示されるように、本実施形態の鉄筋ユニット１Ｂでは、芯材４の周りに１周目に巻き付けられた鉄筋２を連結する間隔保持線３の長さは、芯材４の周りに２周目以降に巻き付けられた鉄筋２を連結する間隔保持線３の長さよりも短い。つまり、芯材４の周りに１周目に巻き付けられた互いに隣接する鉄筋２のそれぞれの間隔ｐ１は、芯材４の周りに２周目以降に巻き付けられた互いに隣接する鉄筋２のそれぞれの間隔ｐ２よりも短い。 A second embodiment of the present invention will be described below. As shown in FIG. 5, in the reinforcing bar unit 1B of this embodiment, the length of the spacing line 3 that connects the reinforcing bars 2 wrapped around the core material 4 in the first turn is It is shorter than the length of the spacing line 3 that connects the reinforcing bars 2 that are wound around the second and subsequent rounds. In other words, the distance p1 between mutually adjacent reinforcing bars 2 wound around the core material 4 in the first turn is the same as the distance p1 between the mutually adjacent reinforcing bars 2 wrapped around the core material 4 in the second and subsequent turns. shorter than p2.

図６に示されるように、本実施形態の鉄筋配置工程では、鉄筋巻付工程で芯材の周りに１周目に巻き付けられる鉄筋２の間隔ｐ１が、鉄筋巻付工程で芯材４の周りに２周目以降に巻き付けられる鉄筋２の間隔ｐ２よりも短くなるように鉄筋が配置される。図７に示されるように、鉄筋連結工程では、鉄筋巻付工程で芯材４の周りに１周目に巻き付けられる鉄筋２を連結する間隔保持線３の長さが、鉄筋巻付工程で芯材４の周りに２周目以降に巻き付けられる鉄筋２を連結する間隔保持線３の長さよりも短くなるように鉄筋２が間隔保持線３により連結される。 As shown in FIG. 6, in the reinforcing bar arrangement process of this embodiment, the interval p1 of the reinforcing bars 2 that are wound around the core material in the first round in the reinforcing bar wrapping process is The reinforcing bars are arranged so as to be shorter than the interval p2 between the reinforcing bars 2 that are wound on and after the second turn. As shown in FIG. 7, in the reinforcing bar connection process, the length of the spacing line 3 that connects the reinforcing bars 2 that are wrapped around the core material 4 in the first round in the reinforcing bar wrapping process is The reinforcing bars 2 are connected by the spacing line 3 so that the length thereof is shorter than the length of the spacing line 3 that connects the reinforcing bars 2 that are wound around the material 4 from the second turn onwards.

つまり、芯材４の周りに１周目に巻き付けられる鉄筋２を連結する間隔保持線３の長さは間隔ｐ２よりも短い間隔ｐ１の長さにされ、芯材４の周りに２周目以降に巻き付けられる鉄筋２を連結する間隔保持線３の長さは間隔ｐ１よりも長い間隔ｐ２の長さにされる。 In other words, the length of the spacing line 3 connecting the reinforcing bars 2 that are wrapped around the core material 4 in the first round is set to the length of the interval p1, which is shorter than the interval p2, and The length of the spacing line 3 that connects the reinforcing bars 2 wound around is set to the length of the spacing p2, which is longer than the spacing p1.

間隔ｐ１，ｐ２の設定は、例えば、芯材４の周りに１周目に巻き付けられた鉄筋２のそれぞれの芯材４の回転方向の側に、芯材４の周りに２周目に巻き付けられた鉄筋２のそれぞれが隣接し、芯材４の周りに２周目に巻き付けられた鉄筋２のそれぞれの芯材４の回転方向の側に、芯材４の周りに３周目に巻き付けられた鉄筋２のそれぞれが隣接するようにできる。 The settings of the intervals p1 and p2 are, for example, such that the reinforcing bars 2 that are wrapped around the core material 4 in the first round are placed on the side in the rotation direction of the core material 4, and the reinforcing bars that are wrapped around the core material 4 in the second round are Each of the reinforced reinforcing bars 2 is adjacent to the reinforcing bar 2 that is wrapped around the core material 4 in the second round. Each of the reinforcing bars 2 can be adjacent to each other.

図８に示されるように、鉄筋巻付工程において、芯材４の周りに１周目に巻き付けられる互いに隣接する鉄筋２の間隔ｐ１は、芯材４の周りに２周目以降に巻き付けられる互いに隣接する鉄筋２の間隔ｐ２よりも短い。図５に示されるように、芯材４の周りに２周目以降に巻き付けられる互いに隣接する鉄筋２の間隔ｐ２は、芯材４の周りに１周目に巻き付けられる互いに隣接する鉄筋２の間隔ｐ１よりも長い。 As shown in FIG. 8, in the reinforcing bar wrapping process, the interval p1 between adjacent reinforcing bars 2 that are wrapped around the core material 4 in the first round is different from the distance p1 between the reinforcing bars 2 that are adjacent to each other and that are wrapped around the core material 4 in the second and subsequent rounds. It is shorter than the interval p2 between adjacent reinforcing bars 2. As shown in FIG. 5, the interval p2 between adjacent reinforcing bars 2 that are wound around the core material 4 in the second and subsequent turns is the interval p2 between the adjacent reinforcing bars 2 that are wrapped around the core material 4 in the first turn. Longer than p1.

なお、芯材４の周りに２周目以降に巻き付けられる鉄筋２については、間隔ｐ２は一定であってよい。また、芯材４の周りに２周目以降に巻き付けられる鉄筋２については、周回ごとに間隔ｐ２を増大させてもよい。 Note that for the reinforcing bars 2 that are wound around the core material 4 from the second turn onwards, the interval p2 may be constant. Furthermore, for the reinforcing bars 2 that are wound around the core material 4 from the second turn onwards, the interval p2 may be increased for each turn.

本実施形態においては、その長手方向Ｙが互いに平行になるようにしつつ、その長手方向Ｙに直交する方向である幅方向Ｘに互いに間隔ｐ１，ｐ２を隔てて配置された複数の鉄筋２と、間隔ｐ１，ｐ２を隔てて配置された互いに隣接する鉄筋２を連結する間隔保持線３と、間隔保持線３により連結された複数の鉄筋２がその周りに巻き付けられた芯材４とを備えた鉄筋ユニット１Ｂにおいて、芯材４の周りに１周目に巻き付けられた鉄筋２を連結する間隔保持線３の長さは、芯材４の周りに２周目以降に巻き付けられた鉄筋２を連結する間隔保持線３の長さよりも短い。これにより、芯材４の中心Ｃから外側への視点で視て、芯材４の周りに巻き付けられた鉄筋２が互いに重なり難くなる。そのため、芯材４の端部から視て、鉄筋ユニット１Ｂの形状が凹凸がより少ない真円に近い形状になり、鉄筋２の展開に必要な力が低減され、鉄筋２の配置をより容易に行うことができる。 In this embodiment, a plurality of reinforcing bars 2 are arranged so that their longitudinal directions Y are parallel to each other, and are spaced apart from each other by intervals p1 and p2 in the width direction X, which is a direction perpendicular to the longitudinal direction Y, It includes a spacing line 3 that connects mutually adjacent reinforcing bars 2 arranged at intervals p1 and p2, and a core material 4 around which a plurality of reinforcing bars 2 connected by the spacing line 3 are wound. In the reinforcing bar unit 1B, the length of the spacing line 3 that connects the reinforcing bars 2 that are wrapped around the core material 4 in the first turn is the same as the length of the spacing line 3 that connects the reinforcing bars 2 that are wrapped around the core material 4 in the second and subsequent turns. It is shorter than the length of the spacing line 3. This makes it difficult for the reinforcing bars 2 wound around the core material 4 to overlap each other when viewed from the perspective outward from the center C of the core material 4. Therefore, when viewed from the end of the core material 4, the shape of the reinforcing bar unit 1B becomes a shape close to a perfect circle with less unevenness, the force required to deploy the reinforcing bars 2 is reduced, and the placement of the reinforcing bars 2 is made easier. It can be carried out.

つまり、鉄筋２と鉄筋２とは番線等の間隔保持線３でつながっており、１周目の鉄筋２が芯材４に巻き付けられる際には、芯材４の外周には他に障害物が無いため、芯材４以外の物体に接触することなく伸長された状態で間隔保持線３は配置される。しかし、２周目の鉄筋２が芯材４に巻き付けられる際には、１周目の鉄筋２の上に２周目の鉄筋２を連結する間隔保持線３が配置されることになる。そのため、互いに隣接する鉄筋２が全て等間隔で間隔保持線３により固定されている場合は、芯材４に１周ごとに巻き付けられる鉄筋２と間隔保持線３とを合わせた周長は、実際には、１周目よりも２周目の方が１周目の鉄筋２を乗り越える分だけ大きくなる。 In other words, the reinforcing bars 2 and 2 are connected by a spacing line 3 such as a steel wire, and when the first reinforcing bar 2 is wrapped around the core material 4, there are no other obstacles on the outer periphery of the core material 4. Therefore, the spacing line 3 is arranged in an extended state without contacting any object other than the core material 4. However, when the second round of reinforcing bars 2 is wound around the core material 4, the spacing line 3 connecting the second round of reinforcing bars 2 is placed on top of the first round of reinforcing bars 2. Therefore, if the reinforcing bars 2 adjacent to each other are all fixed at equal intervals by the spacing lines 3, the actual circumference of the reinforcing bars 2 wrapped around the core material 4 every turn and the spacing lines 3 is In this case, the second round is larger than the first round by the amount of getting over the reinforcing bar 2 of the first round.

鉄筋ユニット１Ｂを出来る限り真円に近づけるためには、２周目の鉄筋２が１周目の鉄筋２の隣に配置され、３周目の鉄筋２が２周目の鉄筋２の隣に配置されるとよい。しかし、間隔保持線３で連結された１周目の鉄筋２の間隔ｐ１と、間隔保持線３で連結された２周目以降の鉄筋２の間隔ｐ２とを同じとすると、１周目は実際の周長に対して鉄筋２の間隔ｐ１が長過ぎ、２周目以降は実際の周長に対して鉄筋２の間隔ｐ２が短過ぎ、上記の理想的な鉄筋２の配置が困難になる。 In order to make the reinforcing bar unit 1B as close to a perfect circle as possible, the reinforcing bars 2 in the second round are placed next to the reinforcing bars 2 in the first round, and the reinforcing bars 2 in the third round are placed next to the reinforcing bars 2 in the second round. It would be good if it were done. However, if the spacing p1 between the reinforcing bars 2 connected by the spacing line 3 in the first rotation is the same as the spacing p2 between the reinforcing bars 2 in the second and subsequent rounds connected by the spacing maintenance line 3, then the first rotation is actually The interval p1 between the reinforcing bars 2 is too long with respect to the circumferential length, and after the second round, the interval p2 between the reinforcing bars 2 is too short with respect to the actual circumferential length, making it difficult to arrange the reinforcing bars 2 in the ideal manner.

本実施形態では、実際の周長に対して、１周目の鉄筋２の間隔ｐ１と、２周目以降の鉄筋２の間隔ｐ２とが適切となるように、芯材４の周りに１周目に巻き付けられた鉄筋２を連結する間隔保持線３の長さは、芯材４の周りに２周目以降に巻き付けられた鉄筋２を連結する間隔保持線３の長さよりも短い。これにより、上記の理想的な鉄筋２の配置を実現することが容易となる。 In this embodiment, one round is made around the core material 4 so that the interval p1 between the reinforcing bars 2 in the first round and the interval p2 between the reinforcing bars 2 in the second and subsequent rounds are appropriate for the actual circumference. The length of the spacing line 3 that connects the reinforcing bars 2 that are wrapped around the eye is shorter than the length of the spacing line 3 that connects the reinforcing bars 2 that are wrapped around the core material 4 from the second turn onwards. This makes it easy to realize the ideal arrangement of reinforcing bars 2 described above.

なお、芯材４の周りに２周目以降の周回のそれぞれで巻き付けられる鉄筋２については、略同様にその前の周回で巻き付けられた鉄筋２の上に次の周回で巻き付けられる鉄筋２を連結する間隔保持線３が配置されるため、１周目と２周目との間ほどの状況の相違は無い。そのため、芯材４の周りに２周目以降の周回のそれぞれで巻き付けられる鉄筋２については、互いに隣接する鉄筋２の間隔ｐ２が一定であってもよい。 In addition, regarding the reinforcing bars 2 that are wrapped around the core material 4 in each of the second and subsequent rounds, the reinforcing bars 2 that are wrapped in the next round are connected on top of the reinforcing bars 2 that were wrapped in the previous round in substantially the same way. Since the interval maintaining line 3 is arranged, there is no difference in the situation between the first round and the second round. Therefore, for the reinforcing bars 2 that are wound around the core material 4 in each of the second and subsequent turns, the interval p2 between adjacent reinforcing bars 2 may be constant.

以上、本発明の実施形態について説明したが、本発明は上記実施形態に限定されることなく様々な形態で実施される。例えば、互いに隣接する鉄筋２の間隔ｐ１，ｐ２の設定方法は、適宜変更され得る。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be implemented in various forms. For example, the method of setting the intervals p1 and p2 between the reinforcing bars 2 adjacent to each other may be changed as appropriate.

１Ａ，１Ｂ…鉄筋ユニット、２…鉄筋、３…間隔保持線、４…芯材、５…螺旋線材、６…フック部、Ｘ…幅方向、Ｙ…長手方向、ｐ，ｐ１，ｐ２…間隔、Ｃ…中心。 1A, 1B... Reinforcing bar unit, 2... Rebar, 3... Spacing line, 4... Core material, 5... Spiral wire, 6... Hook portion, X... Width direction, Y... Longitudinal direction, p, p1, p2... Spacing, C...Center.

Claims (3)

その長手方向が互いに平行になるようにしつつ、その前記長手方向に直交する方向に互いに間隔を隔てて配置された複数の鉄筋と、
前記間隔を隔てて配置された互いに隣接する前記鉄筋を連結する間隔保持線と、
前記間隔保持線により連結された複数の前記鉄筋がその周りに巻き付けられた芯材と、
を備え、
前記芯材の周りに１周目に巻き付けられた前記鉄筋のそれぞれの前記芯材の回転方向の側に、前記芯材の周りに２周目に巻き付けられた前記鉄筋のそれぞれが隣接しており、
前記芯材の周りに２周目に巻き付けられた前記鉄筋のそれぞれの前記芯材の回転方向の側に、前記芯材の周りに３周目に巻き付けられた前記鉄筋のそれぞれが隣接しており、
前記芯材の周りに３周目に巻き付けられた前記鉄筋のそれぞれの前記芯材の回転方向の側に、前記芯材の周りに４周目に巻き付けられた前記鉄筋のそれぞれが隣接している、
鉄筋ユニット。 a plurality of reinforcing bars arranged at intervals in a direction perpendicular to the longitudinal direction while making the longitudinal directions parallel to each other;
a spacing line connecting the reinforcing bars adjacent to each other arranged at the interval;
a core material around which a plurality of reinforcing bars connected by the spacing line are wound;
Equipped with
Each of the reinforcing bars wrapped around the core material in the second round is adjacent to the side in the rotation direction of the core material of each of the reinforcing bars wrapped in the first round around the core material. ,
Each of the reinforcing bars wrapped around the core material a third time is adjacent to the side in the rotation direction of the core material of each of the reinforcing bars wrapped a second time around the core material. ,
Each of the reinforcing bars wrapped around the core material a fourth time is adjacent to the side in the rotation direction of the core material of each of the reinforcing bars wrapped a third time around the core material. ,
Rebar unit . 前記芯材の中心から外側への視点で視て、前記芯材の周りに１周目から少なくとも３周目までに巻き付けられた前記鉄筋は互いに重なっていない、請求項１に記載の鉄筋ユニット。 The reinforcing bar unit according to claim 1 , wherein the reinforcing bars wound around the core material from the first to at least the third turn do not overlap each other when viewed from the perspective outward from the center of the core material. 複数の鉄筋の長手方向が互いに平行になるようにしつつ、複数の前記鉄筋の前記長手方向に直交する方向に互いに間隔を隔てて複数の前記鉄筋を配置する鉄筋配置工程と、
前記鉄筋配置工程で前記間隔を隔てて配置された互いに隣接する前記鉄筋を間隔保持線により連結する鉄筋連結工程と、
前記鉄筋連結工程で前記間隔保持線により連結された複数の前記鉄筋を芯材の周りに巻き付ける鉄筋巻付工程と、
を備え、
前記鉄筋巻付工程では、
前記芯材の周りに１周目に巻き付けられた前記鉄筋のそれぞれの前記芯材の回転方向の側に、前記芯材の周りに２周目に巻き付けられた前記鉄筋のそれぞれが隣接し、
前記芯材の周りに２周目に巻き付けられた前記鉄筋のそれぞれの前記芯材の回転方向の側に、前記芯材の周りに３周目に巻き付けられた前記鉄筋のそれぞれが隣接し、
前記芯材の周りに３周目に巻き付けられた前記鉄筋のそれぞれの前記芯材の回転方向の側に、前記芯材の周りに４周目に巻き付けられた前記鉄筋のそれぞれが隣接するように、前記芯材の周りに前記鉄筋を巻き付ける、鉄筋ユニットの製造方法。 a reinforcing bar arrangement step of arranging a plurality of reinforcing bars at intervals in a direction orthogonal to the longitudinal direction of the plurality of reinforcing bars while ensuring that the longitudinal directions of the plurality of reinforcing bars are parallel to each other;
a reinforcing bar connecting step of connecting the mutually adjacent reinforcing bars arranged at the interval in the reinforcing bar arranging step with a spacing line;
a reinforcing bar wrapping step of wrapping the plurality of reinforcing bars connected by the spacing line in the reinforcing bar connecting step around a core material;
Equipped with
In the reinforcing bar wrapping process,
Each of the reinforcing bars wrapped around the core material in the second round is adjacent to the side in the rotation direction of the core material of each of the reinforcing bars wrapped in the first round around the core material,
Each of the reinforcing bars wrapped around the core material a third time is adjacent to the side in the rotation direction of the core material of each of the reinforcing bars wrapped a second time around the core material,
Each of the reinforcing bars wrapped around the core material in the fourth turn is adjacent to the side in the rotation direction of the core material of each of the reinforcing bars wrapped in the third turn around the core material. , a method for manufacturing a reinforcing bar unit, comprising wrapping the reinforcing bar around the core material .
JP2020013917A 2020-01-30 2020-01-30 Reinforcing bar unit and manufacturing method of reinforcing bar unit Active JP7360335B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020013917A JP7360335B2 (en) 2020-01-30 2020-01-30 Reinforcing bar unit and manufacturing method of reinforcing bar unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020013917A JP7360335B2 (en) 2020-01-30 2020-01-30 Reinforcing bar unit and manufacturing method of reinforcing bar unit

Publications (2)

Publication Number Publication Date
JP2021120520A JP2021120520A (en) 2021-08-19
JP7360335B2 true JP7360335B2 (en) 2023-10-12

Family

ID=77269829

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020013917A Active JP7360335B2 (en) 2020-01-30 2020-01-30 Reinforcing bar unit and manufacturing method of reinforcing bar unit

Country Status (1)

Country Link
JP (1) JP7360335B2 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001182220A (en) 1999-12-27 2001-07-03 Showa Engineering Kk Blind type assembled reinforcement, roll-shaped blind type assembled reinforcement, and lamination-shaped blind type assembled reinforcement
JP2003305525A (en) 2002-02-18 2003-10-28 Showa Engineering Kk Method of manufacturing roll-shaped bamboo blind type assembled reinforcement and execution method of roll- shaped bamboo blind type assembled reinforcement
JP2007063938A (en) 2005-09-02 2007-03-15 Shimizu Corp Method of manufacturing reed-screen assembled reinforcement unit, and connector, core and assembling facility for use therein
JP2007070848A (en) 2005-09-06 2007-03-22 Shimizu Corp Assembling facility and assembling method for screen-like reinforcement unit
US20070110518A1 (en) 2003-10-31 2007-05-17 Beyers Leonard F Method and apparatus for laying reinforcing bars
JP2019027224A (en) 2017-08-02 2019-02-21 株式会社スギウラ鉄筋 Reinforcement unit, manufacturing method of reinforcement unit and reinforcement unit placement method
JP2019037994A (en) 2017-08-23 2019-03-14 鹿島建設株式会社 Reinforcement unit, manufacturing method of reinforcement unit and reinforcement arrangement method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001182220A (en) 1999-12-27 2001-07-03 Showa Engineering Kk Blind type assembled reinforcement, roll-shaped blind type assembled reinforcement, and lamination-shaped blind type assembled reinforcement
JP2003305525A (en) 2002-02-18 2003-10-28 Showa Engineering Kk Method of manufacturing roll-shaped bamboo blind type assembled reinforcement and execution method of roll- shaped bamboo blind type assembled reinforcement
US20070110518A1 (en) 2003-10-31 2007-05-17 Beyers Leonard F Method and apparatus for laying reinforcing bars
JP2007063938A (en) 2005-09-02 2007-03-15 Shimizu Corp Method of manufacturing reed-screen assembled reinforcement unit, and connector, core and assembling facility for use therein
JP2007070848A (en) 2005-09-06 2007-03-22 Shimizu Corp Assembling facility and assembling method for screen-like reinforcement unit
JP2019027224A (en) 2017-08-02 2019-02-21 株式会社スギウラ鉄筋 Reinforcement unit, manufacturing method of reinforcement unit and reinforcement unit placement method
JP2019037994A (en) 2017-08-23 2019-03-14 鹿島建設株式会社 Reinforcement unit, manufacturing method of reinforcement unit and reinforcement arrangement method

Also Published As

Publication number Publication date
JP2021120520A (en) 2021-08-19

Similar Documents

Publication Publication Date Title
US3855777A (en) Reel of alternately rotated parallel-wire strand and method of making
US6305432B1 (en) Wire mesh having flattened strands
US20080276564A1 (en) Method, An Apparatus and A Means For Making A Reinforcement Mesh
JP2008501878A5 (en)
JP6453498B2 (en) Wire net and method for manufacturing a wire net helix
JP5905391B2 (en) Protective wire mesh using braided wire, manufacturing machine and manufacturing method thereof
JPS5816809A (en) Manufacture of truncated conical structure for reinforcing concrete coating layer of cylindrical body
JP7360335B2 (en) Reinforcing bar unit and manufacturing method of reinforcing bar unit
JP2020507477A (en) Machine and method for manufacturing reinforced net and reinforced net
CZ89298A3 (en) Process for producing wire cord fabric and the wire cord fabric per se
PL81509B1 (en)
JP6781747B2 (en) Products manufactured by the double winding reinforcement method and the double winding reinforcement method
JP6030847B2 (en) Manufacturing method of stainless deformed wire rod for concrete rebar
JP7346207B2 (en) Winding method of wire material and aligned winding coil
JP6706227B2 (en) Reinforcing bar unit, method for manufacturing reinforcing bar unit, and method for arranging reinforcing bars
JP6577984B2 (en) Reinforcing bar unit, manufacturing method of reinforcing bar unit, and reinforcing bar arrangement method
JP5057455B2 (en) Tubular strand and method for producing the same
JP7408432B2 (en) Rebar placement method
JP2013132688A (en) Method for manufacturing single wire steel cord
JP2007270486A (en) Structure of spiral hoop for pile, and construction method for rc pile
JPH08267594A (en) Tubular member
AU2021358290B2 (en) Machine and method for producing simply reinforced steel wire meshes
JP2022076842A (en) Reinforcement cage and construction method of concrete structure
JPH06288038A (en) Coil reinforcement excellent in bending workability and its manufacture
JP5596425B2 (en) Manufacturing method of band-shaped member bundle

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20220719

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20230529

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20230606

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20230731

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20230926

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20230929

R150 Certificate of patent or registration of utility model

Ref document number: 7360335

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150