JP2009264426A - Bolt for joining steel plates to each other, and steel plate joining method using the same - Google Patents

Bolt for joining steel plates to each other, and steel plate joining method using the same Download PDF

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JP2009264426A
JP2009264426A JP2008111751A JP2008111751A JP2009264426A JP 2009264426 A JP2009264426 A JP 2009264426A JP 2008111751 A JP2008111751 A JP 2008111751A JP 2008111751 A JP2008111751 A JP 2008111751A JP 2009264426 A JP2009264426 A JP 2009264426A
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Prior art keywords
bolt
steel plate
joining
contact surface
node
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JP2008111751A
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Inventor
Shigeyuki Matsui
繁之 松井
Hiroshi Mitamura
浩 三田村
Hiroshi Mizuno
浩 水野
Takeshi Yamada
岳史 山田
Fujio Komata
富士夫 小俣
Hideaki Kiyota
秀昭 清田
Hideaki Kon
英明 今
Nobuhiko Hayashi
暢彦 林
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MIYAJI IRON WORKS CO Ltd
SHINKO BOLT CO Ltd
Japan Steel Works Ltd
Kobe Steel Ltd
Josho Gakuen Educational Foundation
Kawada Industries Inc
Sho Bond Corp
National Research and Development Agency Public Works Research Institute
Original Assignee
MIYAJI IRON WORKS CO Ltd
SHINKO BOLT CO Ltd
Public Works Research Institute
Japan Steel Works Ltd
Kobe Steel Ltd
Josho Gakuen Educational Foundation
Kawada Industries Inc
Sho Bond Corp
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Application filed by MIYAJI IRON WORKS CO Ltd, SHINKO BOLT CO Ltd, Public Works Research Institute, Japan Steel Works Ltd, Kobe Steel Ltd, Josho Gakuen Educational Foundation, Kawada Industries Inc, Sho Bond Corp filed Critical MIYAJI IRON WORKS CO Ltd
Priority to JP2008111751A priority Critical patent/JP2009264426A/en
Publication of JP2009264426A publication Critical patent/JP2009264426A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a bolt for joining steel plates to each other while suppressing the corotation of the bolt during nut fastening work. <P>SOLUTION: A both-side-screwed bolt 1 (the bolt) includes a node part 2 having a diameter D larger than the inner diameter of a bolt hole 12a of a joined steel plate 12, and screw parts 5, 6 provided on both sides of the node part 2. The both-side-screwed bolt 1 is a high power bolt and has a machined portion 4 formed on a contact face 3 of the node part 2 which contacts the joined steel plate 12, to improve a friction coefficient between the joined steel plate 12 and the node part 2. The machined portion 4 is formed in a wavy shape where uneven parts are repetitively continued all over the periphery of the node part 2 by forming a plurality of protrusions 4a on the contact face 3 which contacts the joined steel plate 12. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、複数の鋼板を接合するためのボルトおよびそれを用いた鋼板の接合方法に関する。さらに具体的には、本発明は、橋梁などの鋼構造物に用いられる鋼板を接合するのに好適なボルトおよびそれを用いた鋼板の接合方法に関する。   The present invention relates to a bolt for joining a plurality of steel plates and a method for joining steel plates using the same. More specifically, the present invention relates to a bolt suitable for joining steel plates used for steel structures such as bridges and a method for joining steel plates using the same.

この種の技術として、例えば特許文献１に記載されているような技術がある。特許文献１に記載された板材接合用ボルトは、鋼板を複数重ねて接合するためのボルトであって、ボルトの両側にネジ部を有する両ネジボルトである。この板材接合用ボルトは、ネジ部間に膨出した節部を設けていることを特徴とする。少なくともいずれか１つの重ねた鋼板のボルト穴を通過しない大きさとなるように、この膨出した節部は設けられる。まず、例えば工場で、鋼板の下面側に突出した一方のネジ部（この状態で、両ネジボルトの節部とボルト穴とは当接している）にナットを締め込んでこの板材接合用ボルトを鋼板に固定する。そののち、鋼板の上面側からのみの締結作業で鋼板同士を現場で接合する。このように、特許文献１に記載された板材接合用ボルトを使用する大きなメリットは、現場でのナットの締め付け作業を片面からのみの作業（片面施工）で行える点にある。   As this type of technology, for example, there is a technology described in Patent Document 1. The board | plate material joining bolt described in patent document 1 is a volt | bolt for overlapping and joining a steel plate, Comprising: It is a double screw bolt which has a thread part on the both sides of a bolt. This plate material joining bolt is characterized in that a bulging node portion is provided between the screw portions. The swollen node portion is provided so as not to pass through the bolt hole of at least one of the stacked steel plates. First, for example, in a factory, a nut is tightened into one screw portion protruding from the lower surface side of the steel plate (in this state, the node portion of both screw bolts and the bolt hole are in contact), and this plate material joining bolt is attached to the steel plate. To fix. After that, the steel plates are joined on site by a fastening operation only from the upper surface side of the steel plates. Thus, the big merit which uses the bolt for board | plate material joining described in patent document 1 exists in the point which can perform the bolting operation | work of a nut on the spot only by the operation | work (single-sided construction) from one side.

特開２００４−１７６９０９号公報JP 2004-176909 A

一方、鋼板同士を接合する作業において、特許文献１に記載されたような片面施工を可能とするボルトを使用する場合、ナットの締め付け作業時に仮にボルトの共回り現象が発生すると、所定のトルク導入が期待できないため、多大なコスト（時間、労力など）をかけてボルトの取り替えを実施することになる。すなわち、ボルトの共回り現象は発生してはならない現象である。しかしながら、特許文献１に記載された板材接合用ボルトでは、締め付けるナットとボルトとの間の摩擦係数が大きくなったり、ボルトの節部に接触する鋼板表面の塗膜の種類（軟らかい塗膜）、塗膜厚、および塗膜下地ブラスト粗さなどによって節部と当該鋼板表面との間の摩擦係数が小さくなったりして、現場でのナットの締め付け作業時にボルトの共回り現象が発生してしまうことがある。野外での締め付け作業では、外気の影響（気温による潤滑剤の劣化、湿度による摩擦係数の変化など）、ネジ部への塵・埃の混入などにより、締め付けるナットとボルトとの間の摩擦係数が大きくなる場合がある。   On the other hand, when using bolts that enable single-sided construction as described in Patent Document 1 in the work of joining steel plates together, if a bolt co-rotation phenomenon occurs during the tightening operation of the nut, a predetermined torque is introduced. Therefore, it is necessary to replace bolts with great cost (time, labor, etc.). In other words, the phenomenon that the bolt co-rotation must not occur. However, in the plate material joining bolt described in Patent Document 1, the friction coefficient between the nut to be tightened and the bolt is increased, or the type of coating on the surface of the steel sheet that is in contact with the node of the bolt (soft coating), The coefficient of friction between the joint and the steel sheet surface becomes small due to the coating thickness and the coating blast roughness, etc., and the bolt rotation phenomenon occurs when tightening the nut on site. Sometimes. In outdoor tightening work, the friction coefficient between the nut and bolt to be tightened due to the influence of outside air (deterioration of lubricant due to temperature, change in friction coefficient due to humidity, etc.), dust and dirt mixed into the screw part, etc. May be larger.

本発明は、上記実情に鑑みてなされたものであって、その目的は、ナットの締め付け作業時におけるボルトの共回り現象を抑制することが可能な鋼板接合用のボルトを提供することである。   This invention is made | formed in view of the said situation, The objective is to provide the bolt for steel plate joining which can suppress the co-rotation phenomenon of the bolt at the time of the fastening operation | work of a nut.

本発明者らは、前記課題を解決すべく鋭意検討した結果、ボルトに設けられた拡径部の鋼板と接触する接触面に、摩擦係数を高める加工部を形成することで、鋼板に対するボルトの動きを拘束し、これにより前記課題を解決できることを見出し、この知見に基づき本発明が完成するに至ったのである。   As a result of intensive studies to solve the above-mentioned problems, the present inventors have formed a processed portion that increases the coefficient of friction on a contact surface that comes into contact with a steel plate of a diameter-enlarged portion provided on the bolt. The present inventors have found that the problem can be solved by restraining the movement, and the present invention has been completed based on this finding.

すなわち、本発明は、複数の鋼板を接合するためのボルトであって、前記鋼板のボルト孔よりも大径の拡径部と、前記拡径部の前記鋼板と接触する接触面に形成され、当該鋼板と当該拡径部との間の摩擦係数を高める加工部と、前記拡径部の少なくとも片側に設けられたネジ部と、を備えるボルトである。   That is, the present invention is a bolt for joining a plurality of steel plates, formed on the contact surface in contact with the steel plate of the enlarged diameter portion, and the enlarged diameter portion larger than the bolt hole of the steel plate, It is a bolt provided with the process part which raises the friction coefficient between the said steel plate and the said enlarged diameter part, and the thread part provided in the at least one side of the said enlarged diameter part.

また好適には、前記加工部は、凹凸状の形態であることである。さらに好適には、前記接触面は、テーパ状に形成され、前記加工部は、凹凸が繰り返し連続する波形状に形成されていることである。さらに好適には、前記加工部は、接着性材料層または吹付け粉体層であることである。   Preferably, the processed portion has a concavo-convex shape. More preferably, the contact surface is formed in a taper shape, and the processed portion is formed in a wave shape in which unevenness is repeated continuously. More preferably, the processed part is an adhesive material layer or a sprayed powder layer.

また本発明は、その第２の態様によれば、複数の鋼板を接合するための前記ボルトを用いた鋼板の接合方法であって、前記ボルトは両ネジボルトであって、前記ボルトを前記拡径部よりも小径の接合鋼板のボルト孔に挿通し、当該拡径部の前記接触面を当該接合鋼板に接触させて当該ボルトの一方からナットを締め込み、当該ボルトを予め当該接合鋼板に固定する第１工程と、前記接合鋼板に固定した前記ボルトに前記拡径部よりも大径の添接鋼板のボルト孔を合わせて、当該ボルトの他方からナットを締め込み、当該接合鋼板と当該添接鋼板とを接合する第２工程と、を備える鋼板の接合方法である。   According to the second aspect of the present invention, there is provided a steel plate joining method using the bolt for joining a plurality of steel plates, wherein the bolt is a double screw bolt, and the bolt is expanded in diameter. The bolt is inserted into the bolt hole of the joining steel plate having a smaller diameter than the portion, the contact surface of the enlarged diameter portion is brought into contact with the joining steel plate, a nut is tightened from one of the bolts, and the bolt is fixed to the joining steel plate in advance. In the first step, the bolt hole of the attachment steel plate having a diameter larger than that of the enlarged diameter portion is aligned with the bolt fixed to the joining steel plate, and a nut is tightened from the other side of the bolt, and the joining steel plate and the attachment A steel plate joining method comprising: a second step of joining the steel plate.

本発明によれば、本発明の構成要件、特に、ボルトの拡径部の鋼板と接触する接触面に形成され鋼板と拡径部との間の摩擦係数を高める加工部により、ナットでボルトを締め付けた際の、当該ボルトがボルト軸回りに回動しようする動きを抑えることができる。その結果、ナットの締め付け作業時におけるボルトの共回り現象を抑制することが可能となる。   According to the present invention, the bolts are formed with nuts by the processing parts that are formed on the contact surface that comes into contact with the steel sheet of the enlarged diameter part of the bolt, and that increase the coefficient of friction between the steel sheet and the enlarged diameter part. It is possible to suppress the movement of the bolt about turning around the bolt axis when tightened. As a result, it is possible to suppress the joint rotation phenomenon of the bolt during the nut tightening operation.

以下、本発明を実施するための最良の形態について図面を参照しつつ説明する。尚、本発明に係るボルトは、例えば、橋梁などの鋼構造物に用いられる鋼板を接合するために使用するボルトである。また、鋼板の接合方式には摩擦接合および支圧接合があり、本発明に係るボルトは、これらいずれの接合方式にも使用できるボルトである。なお、共回り現象を生じにくいというメリットを本発明に係るボルトが有することから、本発明に係るボルトによると、締め付けトルクの管理が容易にかつ確実に行える。したがって、本発明に係るボルトは摩擦接合用途に用いられることが好適であり、ボルトの種類としては高力ボルトであることが好ましい。なお、摩擦接合とは、高力ボルトの締め付けによる鋼板間の摩擦によって力を伝える接合方式のことをいい、支圧接合とは、ボルトと鋼板との支圧によって力を伝える接合方式のことをいう。   Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. In addition, the volt | bolt which concerns on this invention is a volt | bolt used in order to join the steel plate used for steel structures, such as a bridge, for example. In addition, the steel plate joining method includes a friction joining and a bearing joining, and the bolt according to the present invention is a bolt that can be used for any of these joining methods. Since the bolt according to the present invention has an advantage that the co-rotation phenomenon hardly occurs, the bolt according to the present invention can manage the tightening torque easily and reliably. Therefore, it is preferable that the bolt according to the present invention is used for friction joining, and the type of bolt is preferably a high-strength bolt. Friction welding refers to a joining method that transmits force by friction between steel plates by tightening high-strength bolts, and support pressure welding refers to a joining method that transmits force by supporting pressure between bolts and steel plates. Say.

（第１実施形態）
図１は、本発明の第１実施形態に係るボルト１（両ネジボルト１）を示す側面図である。図２は、図１に示す節部２周辺を示す斜視図である。 (First embodiment)
FIG. 1 is a side view showing a bolt 1 (both screw bolts 1) according to a first embodiment of the present invention. FIG. 2 is a perspective view showing the periphery of the node portion 2 shown in FIG.

図１および図２に示すように、本実施形態に係る両ネジボルト１は、接合鋼板１２のボルト孔１２ａの内径よりも大径の直径Ｄを有する拡径部２（以下、節部２と呼ぶ）と、節部２の両側に設けられたネジ部５、６とを備えている。両ネジボルト１は高力ボルトである。接合鋼板１２と接触する節部２の接触面３には、接合鋼板１２と節部２との間の摩擦係数を高めるための加工部４が形成されている。   As shown in FIG. 1 and FIG. 2, both screw bolts 1 according to the present embodiment have an enlarged diameter portion 2 (hereinafter referred to as a node portion 2) having a diameter D larger than the inner diameter of the bolt hole 12 a of the bonded steel plate 12. ) And screw portions 5 and 6 provided on both sides of the node portion 2. Both screw bolts 1 are high strength bolts. On the contact surface 3 of the node 2 that comes into contact with the bonded steel plate 12, a processed portion 4 for increasing the friction coefficient between the bonded steel plate 12 and the node 2 is formed.

節部２の直径Ｄは、接合鋼板１２のボルト孔１２ａの内径よりも大きく、添接鋼板１１のボルト孔１１ａの内径よりも小さい。節部２の高さＨ（または節部２の厚さＨ）は、節部２の接触面３を接合鋼板１２のボルト孔１２ａに接触させ、かつ接合鋼板１２と添接鋼板１１とを重ね合わせた状態において、添接鋼板１１の上面（接合鋼板１２と接触する面に対する反対側の面）から節部２が突出しない高さとされている。   The diameter D of the node portion 2 is larger than the inner diameter of the bolt hole 12 a of the bonded steel plate 12 and smaller than the inner diameter of the bolt hole 11 a of the spliced steel plate 11. The height H of the node 2 (or the thickness H of the node 2) is such that the contact surface 3 of the node 2 is brought into contact with the bolt hole 12a of the bonded steel plate 12, and the bonded steel plate 12 and the spliced steel plate 11 are overlapped. In the combined state, the height is such that the node portion 2 does not protrude from the upper surface of the spliced steel plate 11 (the surface opposite to the surface in contact with the bonded steel plate 12).

また、接合鋼板１２と接触する節部２の接触面３は、ボルト軸方向における節部２の略中央部からネジ部６に向けてテーパ状に軸対称面で形成されている。この接触面３に形成された加工部４は、図２に立体的に示すように、接合鋼板１２と接触する接触面３に複数の突起４ａを設けることにより、節部２の全周にわたって凹凸が繰り返し連続する波形状に形成されている。突起４ａは、連続する稜線を有する山形状とされている。また、節部２の両側に設けられたネジ部５、６のネジ山のネジ方向は同じ方向である。   Further, the contact surface 3 of the node portion 2 that contacts the bonded steel plate 12 is formed as an axially symmetric surface in a tapered shape from a substantially central portion of the node portion 2 in the bolt axis direction toward the screw portion 6. As shown in a three-dimensional view in FIG. 2, the processed portion 4 formed on the contact surface 3 has a plurality of protrusions 4 a on the contact surface 3 that comes into contact with the bonded steel plate 12, thereby providing unevenness on the entire periphery of the node portion 2. Are formed into a continuous wave shape. The protrusion 4a has a mountain shape having a continuous ridgeline. In addition, the screw directions of the screw portions 5 and 6 provided on both sides of the node portion 2 are the same direction.

次に、図３に基づいて、本実施形態の両ネジボルト１を使用した鋼板の接合方法について説明する。図３は、図１に示す両ネジボルト１を用いた鋼板の接合方法を示すための図である。   Next, based on FIG. 3, the joining method of the steel plate using the both screw bolt 1 of this embodiment is demonstrated. FIG. 3 is a view for illustrating a method of joining steel plates using the double screw bolts 1 shown in FIG.

図３（ａ）に示すように、まず、両ネジボルト１のネジ部６を、節部２よりも小径の接合鋼板１２のボルト孔１２ａに挿通する。そして、両ネジボルト１にネジ部６側から座金７を取り付ける。そして、両ネジボルト１の節部２の接触面３を接合鋼板１２のボルト孔１２ａ縁部に接触させながら両ネジボルト１の一方（ネジ部６側）からナット８を締め込み、両ネジボルト１を接合鋼板１２に固定する。両ネジボルト１の節部２とナット８とで接合鋼板１２をはさみこみ、ナット８を例えば１５０Ｎ・ｍのトルクで締め付け、両ネジボルト１を接合鋼板１２に固定するのである。節部２の接触面３が、凹凸が繰り返し連続する波形状に形成されているので、ボルト孔１２ａ縁部と節部２との間に働く摩擦力が大きく、ナット８の締め込み作業時における両ネジボルト１の共回りを抑えることができる。両ネジボルト１の接合鋼板１２への固定は、あらかじめ工場で行われる。   As shown in FIG. 3A, first, the screw portion 6 of both screw bolts 1 is inserted into the bolt hole 12 a of the bonded steel plate 12 having a diameter smaller than that of the node portion 2. Then, a washer 7 is attached to both screw bolts 1 from the screw part 6 side. Then, the nut 8 is tightened from one of the screw bolts 1 (the screw part 6 side) while the contact surface 3 of the joint 2 of the screw bolts 1 is brought into contact with the edge of the bolt hole 12a of the joining steel plate 12, and the screw bolts 1 are joined. Fix to the steel plate 12. The joint steel plate 12 is sandwiched between the joint 2 and the nut 8 of both screw bolts 1, the nut 8 is tightened with a torque of 150 N · m, for example, and the both screw bolts 1 are fixed to the joint steel plate 12. Since the contact surface 3 of the node 2 is formed in a wave shape in which unevenness is repeated continuously, the frictional force acting between the edge of the bolt hole 12a and the node 2 is large, and the nut 8 is tightened. Co-rotation of both screw bolts 1 can be suppressed. The fixing of both screw bolts 1 to the bonded steel sheet 12 is performed in advance at the factory.

次に、両ネジボルト１を固定させた状態で接合鋼板１２を現場に搬入し、接合鋼板１２と添接鋼板１１とを現場で接合する。図３（ｂ）に示すように、接合鋼板１２に対して添接鋼板１１を重ね合わせる。接合鋼板１２にあらかじめ固定した両ネジボルト１のネジ部５に節部２よりも大径の添接鋼板１１のボルト孔１１ａを合わせて、両ネジボルト１の他方（ネジ部５側）から座金９を取り付けるとともにナット１０を締め込み、接合鋼板１２と添接鋼板１１とを摩擦接合する。ナット１０とナット８とで接合鋼板１２および添接鋼板１１をはさみこみ、ナット１０を例えば２２６Ｎ・ｍのトルクで締め付け（本締め）、接合鋼板１２と添接鋼板１１とを摩擦接合するのである。   Next, the joined steel plate 12 is carried into the site with both screw bolts 1 fixed, and the joined steel plate 12 and the spliced steel plate 11 are joined on site. As shown in FIG. 3 (b), the splicing steel plate 11 is superimposed on the joining steel plate 12. Align the bolt hole 11a of the attachment steel plate 11 having a diameter larger than that of the node portion 2 with the screw portion 5 of the both screw bolt 1 fixed in advance to the joining steel plate 12, and the washer 9 from the other side of the screw bolt 1 (the screw portion 5 side). At the same time, the nut 10 is tightened, and the bonded steel plate 12 and the spliced steel plate 11 are friction bonded. The joining steel plate 12 and the splicing steel plate 11 are sandwiched between the nut 10 and the nut 8, and the nut 10 is tightened with a torque of, for example, 226 N · m (final tightening), and the joining steel plate 12 and the splicing steel plate 11 are friction-joined.

本実施形態の両ネジボルト１によれば、節部２の接合鋼板１２と接触する接触面３に形成された複数の突起４ａにより、接触面３をボルト孔１２ａ縁部に接触させつつナット１０（またはナット８）で両ネジボルト１を締め付けた際の、当該両ネジボルト１がボルト軸回りに回動しようする動きを抑えることができる。すなわち、ナット１０（またはナット８）の締め付け作業時におけるボルトの共回り現象を抑制することが可能となる。また、ボルトの共回り現象を抑制することができることで、接合鋼板１２の添接鋼板１１配置側からの締め付け施工（片面施工）の施工性を向上させることができる。   According to the both screw bolts 1 of the present embodiment, the nut 10 (while the contact surface 3 is brought into contact with the edge of the bolt hole 12 a by the plurality of protrusions 4 a formed on the contact surface 3 that contacts the bonded steel plate 12 of the node portion 2. Alternatively, when the both screw bolts 1 are tightened with the nut 8), the movement of the both screw bolts 1 to rotate around the bolt axis can be suppressed. That is, it is possible to suppress the phenomenon of the bolts rotating together during the tightening operation of the nut 10 (or the nut 8). Moreover, the workability | operativity of the fastening construction (single-side construction) from the arrangement | positioning side of the splicing steel plate 11 of the joining steel plate 12 can be improved because the joint rotation phenomenon of a bolt can be suppressed.

また、加工部４を、凹凸が繰り返し連続する波形状とすることにより、接合鋼板１２のボルト孔１２ａと節部２の接触面３との間の摩擦係数を十分に大きくすることができ、ボルトの共回り現象をより抑制することができる。また、接触面３をテーパ状に軸対称面となるように形成することで、両ネジボルト１を接合鋼板１２のボルト孔１２ａの中心に位置させることができるとともに、ボルト孔１２ａと接触面３との間の摩擦力を節部２の全周にわたって均一に発生させることができる。   Moreover, by making the processed part 4 into a wave shape in which the unevenness is repeated continuously, the friction coefficient between the bolt hole 12a of the bonded steel sheet 12 and the contact surface 3 of the node part 2 can be sufficiently increased. The co-rotation phenomenon can be further suppressed. Further, by forming the contact surface 3 in a tapered shape so as to be an axially symmetric surface, both screw bolts 1 can be positioned at the center of the bolt hole 12a of the joining steel plate 12, and the bolt hole 12a and the contact surface 3 Can be uniformly generated over the entire circumference of the node portion 2.

なお、加工部４の形状は、凹凸が繰り返し連続する波形状（多数の突起４ａを有する形状）に限定されるものではない。加工部４の形状は、凹凸状の形態であればよく、すべり止め効果を発揮させるには、接合鋼板１２のボルト孔１２ａの縁辺に１点でも突起４ａが噛み込んでいればよく、すなわち少なくとも１本の突起４ａを有する形態であればよい。ただし、節部２の周方向にできるだけ均一に摩擦力を発生させるには、３本または４本以上の突起４ａが等間隔で形成されることが好ましい。なお、本実施形態のように、節部２の接触面３（テーパ面３）に形成する凹凸形態を、連続する稜線を有する山形状の突起４ａとする場合には、接合鋼板１２のボルト孔１２ａに突起４ａが噛み込むように、突起４ａの長手方向にのびる仮想線をボルトの軸中心を含む仮想平面に投影させた投影線が、ボルトの軸中心線と直交しない角度でボルトの軸中心線と交差していればよい。   In addition, the shape of the process part 4 is not limited to the wave shape (shape which has many protrusion 4a) in which an unevenness | corrugation repeats continuously. The shape of the processed portion 4 may be a concavo-convex shape, and in order to exert an anti-slip effect, the protrusion 4a has only to bite into the edge of the bolt hole 12a of the bonded steel plate 12, that is, at least Any form having one protrusion 4a may be used. However, in order to generate the frictional force as uniformly as possible in the circumferential direction of the node portion 2, it is preferable that three or four or more protrusions 4a are formed at equal intervals. In addition, when the uneven | corrugated form formed in the contact surface 3 (tapered surface 3) of the node part 2 is made into the mountain-shaped protrusion 4a which has a continuous ridgeline like this embodiment, the bolt hole of the joining steel plate 12 The projection line obtained by projecting the imaginary line extending in the longitudinal direction of the projection 4a onto the imaginary plane including the axis center of the bolt so that the projection 4a engages with the projection 12a is at an angle not orthogonal to the axis center line of the bolt. It only needs to intersect the line.

また、節部２の接触面３（テーパ面３）のすべり止め効果を発揮させる手段としては、本実施形態の突起４ａ加工のような機械的なすべり止めだけでなく、材料面からのアプローチであってもよい。例えば、節部２の接触面３（テーパ面３）に形成された加工部が、接着性材料層であってもよいし、吹付け粉体層であってもよい。接着性材料層としては、テーパ面３に粘性の高い材料が塗布されることにより形成される層や、テーパ面３に接着剤が塗布されることにより形成される層が挙げられる。吹付け粉体層は、テーパ面３に粉体を吹き付けることにより形成される。また、亜鉛メッキなどの溶射によって、テーパ面３の表面粗さを大きくしてもよい。節部２のテーパ面３に接着性材料層または吹付け粉体層を形成することにより、簡易にボルト孔１２ａと接触面３との間の摩擦係数を高めることができる。   Further, as means for exerting the anti-slip effect on the contact surface 3 (tapered surface 3) of the node portion 2, not only mechanical anti-slip such as the processing of the protrusion 4a of the present embodiment but also an approach from the material side. There may be. For example, the processed portion formed on the contact surface 3 (tapered surface 3) of the node portion 2 may be an adhesive material layer or a sprayed powder layer. Examples of the adhesive material layer include a layer formed by applying a highly viscous material to the tapered surface 3 and a layer formed by applying an adhesive to the tapered surface 3. The spray powder layer is formed by spraying powder onto the tapered surface 3. Further, the surface roughness of the tapered surface 3 may be increased by thermal spraying such as galvanization. By forming the adhesive material layer or the spray powder layer on the tapered surface 3 of the node portion 2, the friction coefficient between the bolt hole 12a and the contact surface 3 can be easily increased.

なお、現場でのナット１０の締め付け（本締め）作業において、両ネジボルト１の共回りが発生した際の対処方法としては、節部２の接合鋼板１２と接触する接触面３にチョークをまぶす方法もある。   In addition, in the work of tightening the nut 10 on site (main tightening), as a coping method when both screw bolts 1 rotate together, a method of applying a choke to the contact surface 3 that contacts the joining steel plate 12 of the node 2 There is also.

（第２実施形態）
図４は、本発明の第２実施形態に係るボルト１０１（六角ボルト１０１）を示す図である。図４（ａ）は六角ボルト１０１の側面図であり、図４（ｂ）は図４（ａ）のＡ−Ａ断面図である。 (Second Embodiment)
FIG. 4 is a view showing a bolt 101 (hexagon bolt 101) according to the second embodiment of the present invention. 4A is a side view of the hexagon bolt 101, and FIG. 4B is a cross-sectional view taken along line AA of FIG. 4A.

図４に示すように、本実施形態に係る六角ボルト１０１は、鋼板のボルト孔の内径よりも大径の直径を有する拡径部２２（以下、頭部２２と呼ぶ）と、頭部２２の片側に設けられたネジ部２６とを備えている。六角ボルト１０１は高力ボルトである。頭部２２における鋼板と接触する接触面２３には、鋼板と頭部２２との間の摩擦係数を高めるための加工部２４が形成されている。   As shown in FIG. 4, the hexagon bolt 101 according to the present embodiment includes an enlarged diameter portion 22 (hereinafter referred to as a head portion 22) having a diameter larger than the inner diameter of the bolt hole of the steel plate, And a screw portion 26 provided on one side. The hexagon bolt 101 is a high strength bolt. On the contact surface 23 that comes into contact with the steel plate in the head 22, a processed portion 24 is formed for increasing the coefficient of friction between the steel plate and the head 22.

六角ボルト１０１の頭部２２の接触面２３に形成された加工部２４は、接触面２３に形成された６本の突起２４ａからなる。突起２４ａは、連続する稜線を有する山形状の直線状の突起とされている。６本の直線状の突起２４ａは、いずれも六角ボルト１０１の軸心に向かう向きにのびている。   The processed portion 24 formed on the contact surface 23 of the head portion 22 of the hexagon bolt 101 includes six protrusions 24 a formed on the contact surface 23. The protrusion 24a is a mountain-shaped linear protrusion having a continuous ridgeline. Each of the six linear protrusions 24 a extends in the direction toward the axis of the hexagon bolt 101.

六角ボルト１０１は、第１実施形態に係る節付き（節部２付き）の両ネジボルト１のような片面施工が可能なボルトではないため、共回りが発生しても、片面施工用のボルトのような大きな問題にはならないが、ボルトの共回りが発生しなければ、施工性向上の観点からも好ましい。   Since the hexagonal bolt 101 is not a bolt that can be applied on one side like the double screw bolt 1 with a node (with a node 2) according to the first embodiment, even if co-rotation occurs, Although it does not become such a big problem, if the co-rotation of a bolt does not occur, it is preferable from the viewpoint of improving workability.

本実施形態の六角ボルト１０１によれば、頭部２２の鋼板と接触する接触面２３に形成された複数の突起２４ａにより、接触面２３を鋼板に接触させつつナットで六角ボルト１０１を締め付けた際の、当該六角ボルト１０１がボルト軸回りに回動しようする動きを抑えることができる。すなわち、ナットの締め付け作業時におけるボルトの共回り現象を抑制することが可能となる。   According to the hexagon bolt 101 of the present embodiment, when the hexagon bolt 101 is tightened with a nut while the contact surface 23 is in contact with the steel plate by the plurality of protrusions 24a formed on the contact surface 23 in contact with the steel plate of the head portion 22. Thus, the movement of the hexagonal bolt 101 about turning around the bolt axis can be suppressed. In other words, it is possible to suppress the phenomenon of bolt co-rotation during the nut tightening operation.

なお、加工部２４の形状は、連続する稜線を有する直線状の突起２４ａに限定されるものではない。加工部２４の形状は、凹凸状の形態であればよく、点状の突起や半球状の突起を接触面２３に散りばめてもよい。また、前記したと同様に、頭部２２の接触面２３のすべり止め効果を発揮させる手段としては、本実施形態の突起２４ａ加工のような機械的なすべり止めだけでなく、材料面からのアプローチであってもよい。例えば、頭部２２の接触面２３に形成された加工部が、接着性材料層であってもよいし、吹付け粉体層であってもよい。また、亜鉛メッキなどの溶射によって、接触面２３の表面粗さを大きくしてもよい。   In addition, the shape of the process part 24 is not limited to the linear protrusion 24a which has a continuous ridgeline. The shape of the processed portion 24 may be a concavo-convex shape, and dot-like protrusions or hemispherical protrusions may be scattered on the contact surface 23. As described above, the means for exerting the anti-slip effect on the contact surface 23 of the head 22 is not only a mechanical anti-slip such as the processing of the protrusion 24a of the present embodiment, but also an approach from the material side. It may be. For example, the processed part formed on the contact surface 23 of the head 22 may be an adhesive material layer or a sprayed powder layer. Further, the surface roughness of the contact surface 23 may be increased by thermal spraying such as galvanization.

（第２実施形態の変形例）
次に、第２実施形態の変形例に係るボルトについて説明する。図５は、図４に示す第２実施形態に係る六角ボルト１０１の変形例を示す図である。図５（ａ）は変形例に係るＴＣ型ボルト２０１（トルシア型ボルト）の側面図であり、図５（ｂ）は図５（ａ）のＢ−Ｂ断面図である。 (Modification of the second embodiment)
Next, a bolt according to a modification of the second embodiment will be described. FIG. 5 is a view showing a modification of the hexagon bolt 101 according to the second embodiment shown in FIG. Fig.5 (a) is a side view of the TC type | mold bolt 201 (Torcia type | mold bolt) which concerns on a modification, FIG.5 (b) is BB sectional drawing of Fig.5 (a).

図５に示すように、本実施形態のＴＣ型ボルト２０１は、鋼板のボルト孔の内径よりも大径の直径を有する拡径部３２（以下、頭部３２と呼ぶ）と、頭部３２の片側に設けられたネジ部２６とを備えている。ＴＣ型ボルト２０１は高力ボルトである。頭部３２における鋼板と接触する接触面３３には、鋼板と頭部３２との間の摩擦係数を高めるための加工部３４が形成されている。   As shown in FIG. 5, the TC-type bolt 201 of this embodiment includes an enlarged diameter portion 32 (hereinafter referred to as a head portion 32) having a diameter larger than the inner diameter of the bolt hole of the steel plate, and the head portion 32. And a screw portion 26 provided on one side. The TC type bolt 201 is a high strength bolt. The contact surface 33 that contacts the steel plate in the head 32 is formed with a processing portion 34 for increasing the coefficient of friction between the steel plate and the head 32.

ＴＣ型ボルト２０１の頭部３２の接触面３３に形成された加工部３４は、接触面３３に形成された４本の突起２４ａからなる。突起２４ａは、連続する稜線を有する山形状の直線状の突起とされている。４本の直線状の突起２４ａは、いずれもＴＣ型ボルト２０１の軸心に向かう向きにのびている。   The processed portion 34 formed on the contact surface 33 of the head portion 32 of the TC bolt 201 includes four protrusions 24 a formed on the contact surface 33. The protrusion 24a is a mountain-shaped linear protrusion having a continuous ridgeline. The four linear protrusions 24 a all extend in the direction toward the axis of the TC bolt 201.

また加工部３４の形状は、第２実施形態に係る六角ボルト１０１の加工部２４と同様に、連続する稜線を有する直線状の突起２４ａに限定されるものではない。加工部３４の形状は、凹凸状の形態であればよく、点状の突起や半球状の突起を接触面３３に散りばめてもよい。また、前記したと同様に、頭部３２の接触面３３のすべり止め効果を発揮させる手段としては、本実施形態の突起２４ａ加工のような機械的なすべり止めだけでなく、材料面からのアプローチであってもよい。例えば、頭部３２の接触面３３に形成された加工部が、接着性材料層であってもよいし、吹付け粉体層であってもよい。また、亜鉛メッキなどの溶射によって、接触面３３の表面粗さを大きくしてもよい。   Further, the shape of the processed portion 34 is not limited to the linear protrusion 24a having a continuous ridgeline, like the processed portion 24 of the hexagon bolt 101 according to the second embodiment. The shape of the processed portion 34 may be a concavo-convex shape, and dot-like protrusions or hemispherical protrusions may be scattered on the contact surface 33. Further, as described above, the means for exerting the anti-slip effect on the contact surface 33 of the head 32 is not only the mechanical anti-slip such as the processing of the protrusion 24a of this embodiment, but also the approach from the material side. It may be. For example, the processed part formed on the contact surface 33 of the head part 32 may be an adhesive material layer or a sprayed powder layer. Further, the surface roughness of the contact surface 33 may be increased by thermal spraying such as galvanization.

以上、本発明の実施形態について説明したが、本発明は上述の実施の形態に限られるものではなく、特許請求の範囲に記載した限りにおいて様々に変更して実施することが可能なものである。   Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims. .

本発明の第１実施形態に係るボルトを示す側面図である。It is a side view which shows the volt | bolt which concerns on 1st Embodiment of this invention. 図１に示す節部周辺を示す斜視図である。It is a perspective view which shows the node part periphery shown in FIG. 図１に示すボルトを用いた鋼板の接合方法を示すための図である。It is a figure for demonstrating the joining method of the steel plate using the volt | bolt shown in FIG. 本発明の第２実施形態に係るボルトを示す図である。It is a figure which shows the volt | bolt which concerns on 2nd Embodiment of this invention. 図４に示す第２実施形態に係るボルトの変形例を示す図である。It is a figure which shows the modification of the volt | bolt which concerns on 2nd Embodiment shown in FIG.

符号の説明Explanation of symbols

・ １０１、２０１：ボルト
２：節部（拡径部）
４ａ：突起
２２：六角ボルトの頭部（拡径部）
３２：ＴＣ型ボルトの頭部（拡径部）
３：接触面
４：加工部
５、６：ネジ部 101, 201: Bolt 2: Node part (expanded diameter part)
4a: Protrusion 22: Hex head head (expanded portion)
32: Head of TC bolt (expanded part)
3: Contact surface 4: Processed portion 5, 6: Screw portion

Claims (5)

複数の鋼板を接合するためのボルトであって、
前記鋼板のボルト孔よりも大径の拡径部と、
前記拡径部の前記鋼板と接触する接触面に形成され、当該鋼板と当該拡径部との間の摩擦係数を高める加工部と、
前記拡径部の少なくとも片側に設けられたネジ部と、
を備えることを特徴とする、ボルト。 A bolt for joining a plurality of steel plates,
An enlarged diameter portion larger than the bolt hole of the steel plate;
Formed on the contact surface that contacts the steel plate of the enlarged diameter portion, a processing portion that increases the coefficient of friction between the steel plate and the enlarged diameter portion,
A threaded portion provided on at least one side of the enlarged diameter portion;
A bolt, comprising: 前記加工部は、凹凸状の形態であることを特徴とする、請求項１に記載のボルト。   The bolt according to claim 1, wherein the processed portion has an uneven shape. 前記接触面は、テーパ状に形成され、
前記加工部は、凹凸が繰り返し連続する波形状に形成されていることを特徴とする、請求項１または２に記載のボルト。 The contact surface is formed in a tapered shape,
The bolt according to claim 1, wherein the processed portion is formed in a wave shape in which unevenness is continuously repeated. 前記加工部は、接着性材料層または吹付け粉体層であることを特徴とする、請求項１に記載のボルト。   The bolt according to claim 1, wherein the processed portion is an adhesive material layer or a sprayed powder layer. 請求項１〜４の１つに記載のボルトを用いた鋼板の接合方法であって、
前記ボルトは両ネジボルトであって、
前記ボルトを前記拡径部よりも小径の接合鋼板のボルト孔に挿通し、当該拡径部の前記接触面を当該接合鋼板に接触させて当該ボルトの一方からナットを締め込み、当該ボルトを予め当該接合鋼板に固定する第１工程と、
前記接合鋼板に固定した前記ボルトに前記拡径部よりも大径の添接鋼板のボルト孔を合わせて、当該ボルトの他方からナットを締め込み、当該接合鋼板と当該添接鋼板とを接合する第２工程と、
を備えることを特徴とする、鋼板の接合方法。

It is the joining method of the steel plate using the volt | bolt of one of Claims 1-4,
The bolts are both screw bolts,
The bolt is inserted into a bolt hole of a bonded steel plate having a diameter smaller than that of the expanded diameter portion, the contact surface of the expanded diameter portion is brought into contact with the bonded steel plate, and a nut is tightened from one of the bolts. A first step of fixing to the bonded steel sheet;
Align the bolt hole of the spliced steel plate having a diameter larger than the enlarged diameter portion with the bolt fixed to the spliced steel plate, and tighten the nut from the other side of the bolt to join the spliced steel plate and the spliced steel plate. A second step;
A method for joining steel sheets, comprising:

JP2008111751A 2008-04-22 2008-04-22 Bolt for joining steel plates to each other, and steel plate joining method using the same Pending JP2009264426A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013122316A (en) * 2011-12-12 2013-06-20 Agustawestland Spa Lock ring and threaded stud

Citations (10)

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Publication number Priority date Publication date Assignee Title
JPS52125666U (en) * 1976-03-23 1977-09-24
JPS55109815A (en) * 1979-02-17 1980-08-23 Takao Ishii Nut
JPS55140815U (en) * 1979-03-28 1980-10-08
JPS567114U (en) * 1979-06-28 1981-01-22
JPH0719614U (en) * 1993-09-08 1995-04-07 正春 市村 Retrofit bolt
JPH07305712A (en) * 1994-05-10 1995-11-21 Three Bond Co Ltd Nut with self-locking resin film formed on tapped part thereof
JP2004058869A (en) * 2002-07-30 2004-02-26 Ikeda Glass Kogyosho:Kk Bolt for window glass for automobile
JP2004176909A (en) * 2002-11-11 2004-06-24 Kobe Steel Ltd Bolt for joining plates, and method for joining plates using the bolt
JP2006138392A (en) * 2004-11-11 2006-06-01 Kobe Steel Ltd Plate material joining method and joining structure
JP2007214546A (en) * 2006-01-12 2007-08-23 Taiyo Nippon Sanso Corp Manufacturing method of frp cryostat

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52125666U (en) * 1976-03-23 1977-09-24
JPS55109815A (en) * 1979-02-17 1980-08-23 Takao Ishii Nut
JPS55140815U (en) * 1979-03-28 1980-10-08
JPS567114U (en) * 1979-06-28 1981-01-22
JPH0719614U (en) * 1993-09-08 1995-04-07 正春 市村 Retrofit bolt
JPH07305712A (en) * 1994-05-10 1995-11-21 Three Bond Co Ltd Nut with self-locking resin film formed on tapped part thereof
JP2004058869A (en) * 2002-07-30 2004-02-26 Ikeda Glass Kogyosho:Kk Bolt for window glass for automobile
JP2004176909A (en) * 2002-11-11 2004-06-24 Kobe Steel Ltd Bolt for joining plates, and method for joining plates using the bolt
JP2006138392A (en) * 2004-11-11 2006-06-01 Kobe Steel Ltd Plate material joining method and joining structure
JP2007214546A (en) * 2006-01-12 2007-08-23 Taiyo Nippon Sanso Corp Manufacturing method of frp cryostat

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013122316A (en) * 2011-12-12 2013-06-20 Agustawestland Spa Lock ring and threaded stud

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