JPH09317734A - Bolt fastening method and its structure - Google Patents
Bolt fastening method and its structureInfo
- Publication number
- JPH09317734A JPH09317734A JP13336896A JP13336896A JPH09317734A JP H09317734 A JPH09317734 A JP H09317734A JP 13336896 A JP13336896 A JP 13336896A JP 13336896 A JP13336896 A JP 13336896A JP H09317734 A JPH09317734 A JP H09317734A
- Authority
- JP
- Japan
- Prior art keywords
- bolt
- tension
- structure side
- screwed
- fastening
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
- B23P19/067—Bolt tensioners
- B23P19/068—Bolt tensioners by using heating means
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、建物ユニットを構
成する柱と梁等の２つの構造体をボルト締結するに好適
なボルト締結方法及び構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bolting method and a structure suitable for bolting two structures, such as a pillar and a beam, which constitute a building unit.
【０００２】[0002]
【従来の技術】従来、柱と梁等のための接合仕口とし
て、特公昭54-12126号公報に記載のものがある。この従
来技術は、柱の側部と梁のエンドプレートの互いに対応
する部分にボルト挿通孔を設け、柱と梁の一方側から他
方側に挿通したボルトの先端ねじ部に、柱と梁の他方側
からナットを螺着するものである。2. Description of the Related Art Conventionally, as a joint for columns and beams, there is one disclosed in Japanese Patent Publication No. 54-12126. In this conventional technique, a bolt insertion hole is provided in a portion corresponding to each other on the side portion of the column and the end plate of the beam, and the tip screw portion of the bolt inserted from one side of the column and the beam to the other side is attached to the other of the column and the beam. The nut is screwed from the side.
【０００３】そして、この従来技術では、ボルトに一定
の張力Ｆを導入する（柱と梁の接合部間に一定の圧縮力
を与える）ため、トルクレンチ等を用いて、ボルトに加
えるトルクＴを、Ｔ＝ｋ・ｄ・Ｆにより管理することと
している。但し、ｋはボルト／ナットセットのトルク係
数、ｄはボルトの軸径である。In this prior art, in order to introduce a constant tension F to the bolt (apply a constant compressive force between the column and beam joints), a torque wrench or the like is used to apply the torque T to the bolt. , T = k · d · F. Here, k is the torque coefficient of the bolt / nut set, and d is the shaft diameter of the bolt.
【０００４】[0004]
【発明が解決しようとする課題】然しながら、従来技術
には下記〜の問題点がある。 ボルトの頭部の傾き、もしくはボルトの軸部の曲がり
により、ボルトの軸部がボルトの挿通孔の内面をこす
り、ボルトの回転に対する抵抗損失を生ずる結果、ボル
トに与えるトルクの管理が困難で、ボルトに適正な導入
張力を付与できない。However, the prior art has the following problems. Due to the inclination of the head of the bolt or the bending of the shaft of the bolt, the shaft of the bolt rubs the inner surface of the insertion hole of the bolt, resulting in resistance loss to the rotation of the bolt.As a result, it is difficult to control the torque applied to the bolt. It is not possible to apply proper tension to the bolt.
【０００５】ボルト／ナットセットのトルク係数にバ
ラツキがあるため、このトルク係数に基づくトルクの管
理を行なっても、ボルトの導入張力にバラツキを生じて
しまう。Since the torque coefficient of the bolt / nut set varies, even if the torque is controlled based on this torque coefficient, the tension introduced into the bolt also varies.
【０００６】ボルトの軸径が大きくなると、大きなト
ルクが必要になり、作業者の締付操作力が重いものにな
る。If the shaft diameter of the bolt becomes large, a large torque is required, and the tightening force of the operator becomes heavy.
【０００７】本発明の課題は、２つの構造体をボルト締
結するに際し、締付操作力を軽減でき、且つボルトに適
正な導入張力を付与することにある。An object of the present invention is to reduce the tightening operation force when fastening two structures by bolts and to apply proper introduction tension to the bolts.
【０００８】[0008]
【課題を解決するための手段】請求項１に記載の本発明
は、第１と第２の２つの構造体をボルト締結するに際
し、第１の構造体側に設けたボルト支持孔に挿通される
ボルトの雄ねじ部を、第２の構造体側に設けた雌ねじ部
に螺着し、ボルトに一定の張力を導入するボルト締結方
法において、ボルトの軸部を予め加熱し、このボルトの
頭部が第１の構造体側のボルト支持面に密着するまで該
ボルトを第２の構造体側の雌ねじ部に螺着し、該ボルト
が常温に戻ることによるその軸部の縮み量に比例する張
力を該ボルトに導入するようにしたものである。According to the present invention as set forth in claim 1, when bolting the first and second structures, the first and second structures are inserted into a bolt support hole provided on the side of the first structure. In the bolt fastening method in which the male screw portion of the bolt is screwed to the female screw portion provided on the second structure side and a certain tension is introduced to the bolt, the shaft portion of the bolt is preheated so that the head portion of the bolt is The bolt is screwed to the female thread portion on the second structure side until it comes into close contact with the bolt supporting surface on the first structure side, and a tension proportional to the amount of shrinkage of the shaft portion of the bolt when the bolt returns to room temperature is applied to the bolt. It was designed to be introduced.
【０００９】請求項２に記載の本発明は、第１と第２の
２つの構造体をボルト締結するに際し、第１の構造体側
に設けたボルト支持孔に挿通されるボルトの雄ねじ部
を、第２の構造体側に設けた雌ねじ部に螺着し、ボルト
に一定の張力を導入するボルト締結構造において、予め
軸部が加熱されたボルトの頭部が第１の構造体側のボル
ト支持面に密着するまで該ボルトが第２の構造体側の雌
ねじ部に螺着され、該ボルトが常温に戻ることによるそ
の軸部の縮み量に比例する張力が該ボルトに導入せしめ
られるように構成されてなるようにしたものである。According to a second aspect of the present invention, when the first and second structures are bolted together, the male screw portion of the bolt which is inserted into the bolt support hole provided on the first structure side, In a bolt fastening structure that is screwed to an internal thread portion provided on the second structure side and introduces a constant tension to the bolt, the head portion of the bolt whose shaft portion is heated in advance becomes the bolt supporting surface on the first structure side. The bolt is screwed to the female thread portion on the second structure side until they come into close contact with each other, and a tension proportional to the amount of shrinkage of the shaft portion of the bolt when the bolt returns to room temperature is introduced into the bolt. It was done like this.
【００１０】請求項３に記載の本発明は、請求項２に記
載の本発明において更に、前記２つの構造体が、建物ユ
ニットを構成する柱と梁であるようにしたものである。According to a third aspect of the present invention, in addition to the second aspect of the present invention, the two structures are pillars and beams constituting a building unit.
【００１１】請求項４に記載の本発明は、請求項１に記
載の本発明において更に、前記ボルトに張力Ｆを導入す
るに必要な加熱温度ｔを、締付時の常温ｔ0 、ボルトに
加える温度変化量Δｔにより、ｔ＝ｔ0 ＋Δｔとすると
き、上記温度変化量Δｔは、張力Ｆに対応するボルトの
歪ε（ε＝σ／Ｅ、σ＝Ｆ／Ａ、但しσはボルトの引張
応力、Ｅはボルトの構成材料の縦弾性係数、Ａはボルト
の軸断面積）、ボルトの構成材料の熱膨張率αから、Δ
ｔ＝ε／αであるようにしたものである。The present invention as set forth in claim 4 is the same as in the present invention as set forth in claim 1, wherein the heating temperature t required for introducing the tension F into the bolt is the normal temperature t 0 at the time of tightening, When t = t 0 + Δt according to the temperature change amount Δt to be applied, the temperature change amount Δt is the strain ε (ε = σ / E, σ = F / A of the bolt corresponding to the tension F, where σ is the bolt Tensile stress, E is the longitudinal elastic modulus of the constituent material of the bolt, A is the axial sectional area of the bolt), and the coefficient of thermal expansion α of the constituent material of the bolt is Δ
t = ε / α.
【００１２】請求項１、２、４に記載の本発明によれば
下記〜の作用がある。 加熱されて締付けられたボルトが常温に戻ることによ
る軸部の縮みにより、ボルトに張力を導入できる。According to the present invention as set forth in claims 1, 2, and 4, the following effects are obtained. The tension of the bolt can be introduced due to the shrinkage of the shaft portion caused by the heating and tightening of the bolt to return to room temperature.
【００１３】上記の導入張力は、ボルトの軸部の縮
み量に基づくものであり、この縮み量はボルトの加熱温
度の大きさに起因するから、ボルトの加熱温度を管理す
ることにより、導入張力を管理できる。従って、ボルト
に与えるトルク管理によって導入張力を管理するもので
ないため、ボルトの頭部の傾きや軸部の曲がり、或いは
ボルト／ナットセットのトルク係数のバラツキによら
ず、ボルトに適正な導入張力を付与できる。The above-mentioned introduction tension is based on the amount of contraction of the shaft of the bolt, and this amount of contraction depends on the heating temperature of the bolt. Therefore, the introduction tension can be controlled by controlling the heating temperature of the bolt. Can be managed. Therefore, since the introduced tension is not managed by controlling the torque applied to the bolt, the appropriate introduced tension is applied to the bolt regardless of the inclination of the head of the bolt, the bending of the shaft, or the variation in the torque coefficient of the bolt / nut set. Can be given.
【００１４】作業者による締付操作は、ボルトの頭部
が第１の構造体のボルト支持面に密着するものであれば
足り、締付操作力は軽くて足りる。The tightening operation by the operator is sufficient if the head of the bolt is in close contact with the bolt supporting surface of the first structure, and the tightening operation force is light.
【００１５】請求項３に記載の本発明によれば下記の
作用がある。 建物ユニットを構成する柱と梁の接合において、上記
〜を享受できる。According to the third aspect of the present invention, the following operations are provided. The above items 1 to 3 can be enjoyed in the connection between the pillar and the beam that form the building unit.
【００１６】[0016]
【発明の実施の形態】図１はボルト締結構造を示す模式
図、図２は柱と梁の接合仕口を示す模式図、図３は建物
ユニットを示す模式図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic view showing a bolt fastening structure, FIG. 2 is a schematic view showing a joint between columns and beams, and FIG. 3 is a schematic view showing a building unit.
【００１７】建物ユニット１０は、図３に示す如く、 4
本の形鋼製床梁１１と 4本角鋼管製柱１２と 4本の形鋼
製天井梁１３を接合した骨組構造体であり、この骨組構
造体に床面材、天井面材、壁面材、窓等を取付けて生産
される。The building unit 10 is, as shown in FIG.
This is a frame structure in which a frame beam 11 made of steel, a square beam 12 made of square steel tubes, and a ceiling beam 13 made of 4 steel beams are joined, and this frame structure is made of floor material, ceiling material, and wall material. It is produced by installing windows, etc.
【００１８】このとき、建物ユニット１０にあっては、
各柱１２の下端部への床梁１１の接合、各柱１２の上端
部への天井梁１３の接合を、ボルト２１を用いた下記
(1) 〜(3) によるボルト締結構造によっている（図
２）。尚、床梁１１と柱１２のボルト締結構造と、天井
梁１３と柱１２のボルト締結構造は実質的に同じであ
り、以下、床梁１１と柱１２のボルト締結構造をそれら
の代表として説明する。At this time, in the building unit 10,
The floor beams 11 are joined to the lower ends of the columns 12 and the ceiling beams 13 are joined to the upper ends of the columns 12 using bolts 21 described below.
It uses the bolt fastening structure of (1) to (3) (Fig. 2). In addition, the bolt fastening structure of the floor beam 11 and the pillar 12 and the bolt fastening structure of the ceiling beam 13 and the column 12 are substantially the same. Hereinafter, the bolt fastening structure of the floor beam 11 and the pillar 12 will be described as a representative thereof. To do.
【００１９】(1) ボルト２１の軸部を予め加熱する。こ
の加熱は、例えばバンドヒータ等を用いた方法によるこ
とができる。この加熱温度については、後述する。尚、
後述するナット２２は加熱してもしなくても良い。しか
し、ボルトを加熱したときにその径方向の膨張によりナ
ットへのボルトの螺着が困難になる場合はそれに応じて
ナットを加熱するのが良い。(1) The shaft of the bolt 21 is preheated. This heating can be performed by, for example, a method using a band heater or the like. This heating temperature will be described later. still,
The nut 22 described below may or may not be heated. However, when it is difficult to screw the bolt into the nut due to the radial expansion of the bolt when heated, it is preferable to heat the nut accordingly.
【００２０】(2) 床梁１１のエンドプレート１１Ａに設
けたボルト支持孔１１Ｂにボルト２１を挿通し（図
１）、このボルト２１の雄ねじ部を柱１２の裏面に溶接
等により設けてあるナット２２（柱１２にねじ切りした
雌ねじ部であっても良い）に螺着する。このボルト２１
の締付けは、ボルト２１の頭部の全面が床梁１１のエン
ドプレート１１Ａ（ボルト支持面）に密着するまでとす
る。(2) A bolt 21 is inserted into a bolt support hole 11B provided in the end plate 11A of the floor beam 11 (FIG. 1), and a male screw portion of the bolt 21 is welded to the back surface of the column 12 by a nut or the like. 22 (which may be a female screw portion threaded on the column 12). This bolt 21
Tightening is performed until the entire surface of the head of the bolt 21 comes into close contact with the end plate 11A (bolt supporting surface) of the floor beam 11.
【００２１】(3) ボルト２１が常温に戻るとき、ボルト
２１の軸部が縮む。そして、このボルト２１の軸部の縮
み量に比例する張力がボルト２１に導入されるものとな
る。(3) When the bolt 21 returns to room temperature, the shaft portion of the bolt 21 contracts. Then, a tension proportional to the amount of contraction of the shaft portion of the bolt 21 is introduced into the bolt 21.
【００２２】然るに、軸径がｄのボルト２１に張力Ｆを
導入するに必要な、ボルト２１の加熱温度ｔ（℃）は、
以下如くに定めることができる。ボルト２１の軸断面積
はＡ＝πｄ2 ／4 、ボルト２１の引張応力はσ＝Ｆ／Ａ
により算出され、この引張応力σを生ずるボルト２１の
歪（縮み量）はε＝σ／Ｅにより算出される（Ｅはボル
ト２１の構成材料の縦弾性係数）。従って、ボルト２１
の構成材料の熱膨張率（ 1℃当たりの伸び率) をαとす
ると、ボルト２１の上述の歪（縮み量）εを生ずるに必
要なボルト２１の温度変化量Δｔは、Δｔ＝ε／αとな
る。よって、締付時の常温がｔ0 ［℃］であれば、ボル
ト２１の必要加熱温度はｔ＝ｔ0 ＋Δｔである。However, the heating temperature t (° C.) of the bolt 21 required to introduce the tension F into the bolt 21 having the shaft diameter d is
It can be defined as follows. Jikudan area of the bolt 21 is A = πd 2/4, the tensile stress of the bolt 21 σ = F / A
The strain (shrinkage amount) of the bolt 21 that produces the tensile stress σ is calculated by ε = σ / E (E is the longitudinal elastic modulus of the constituent material of the bolt 21). Therefore, the bolt 21
Assuming that the coefficient of thermal expansion (elongation rate per 1 ° C.) of the constituent material of α is α, the amount of temperature change Δt of the bolt 21 required to generate the strain (contraction amount) ε of the bolt 21 is Δt = ε / α Becomes Therefore, if the room temperature at the time of tightening is t 0 [° C.], the required heating temperature of the bolt 21 is t = t 0 + Δt.
【００２３】また、ボルト２１の締付時に、ボルト２１
の保有熱が床梁１１、柱１２、ナット２２等に抜熱され
るから、この抜熱によるボルト２１の温度低下量をΔｍ
とすれば、ボルト２１の必要加熱温度はｔ＝ｔ0 ＋Δｔ
＋Δｍとなる。尚、ナット２２は前述した如く加熱を必
要としないが、ナット２２は上述のボルト２１からの抜
熱を予防するために加熱してあっても良い。When tightening the bolt 21, the bolt 21
Since the retained heat of the bolt is removed by the floor beam 11, the pillar 12, the nut 22, etc., the amount of temperature decrease of the bolt 21 due to this removal is Δm.
Then, the required heating temperature of the bolt 21 is t = t 0 + Δt
It becomes + Δm. The nut 22 does not need to be heated as described above, but the nut 22 may be heated to prevent heat removal from the bolt 21 described above.
【００２４】従って、ボルト２１をＭ30、導入張力Ｆを
38［ｔ］とするとき、ボルト２１の軸断面積Ａは7.065
［cm2 ］、ボルト２１の引張応力σは5.379 ［ｔ／cm
2 ］、ボルト２１の歪ε（＝5.379 ／2100）は0.256 ％
になる。そして、ボルト２１の構成材料を鉄とすると
き、α＝1.2 ×10-5［ 1／℃］であり、ボルト２１の前
述した必要温度変化量Δｔは213.3 ［℃］となり、常温
ｔ0 を25［℃］とすると、ボルト２１の必要加熱温度は
ｔ＝238.3 ［℃］である。Therefore, the bolt 21 is M30 and the introduction tension F is
When it is set to 38 [t], the axial sectional area A of the bolt 21 is 7.065.
[Cm 2 ], the tensile stress σ of the bolt 21 is 5.379 [t / cm
2 ], the strain ε (= 5.379 / 2100) of the bolt 21 is 0.256%
become. When iron is used as the constituent material of the bolt 21, α = 1.2 × 10 −5 [1 / ° C.], the required temperature change Δt of the bolt 21 is 213.3 [° C.], and the room temperature t 0 is 25 If [° C.], the required heating temperature of the bolt 21 is t = 238.3 [° C.].
【００２５】以下、本実施形態の作用について説明す
る。 加熱されて締付けられたボルト２１が常温に戻ること
による軸部の縮みにより、ボルト２１に張力を導入でき
る。The operation of this embodiment will be described below. The tension of the bolts 21 can be introduced by the shrinkage of the shaft portion caused by the heated and tightened bolts 21 returning to room temperature.
【００２６】上記の導入張力は、ボルト２１の軸部
の縮み量に基づくものであり、この縮み量はボルト２１
の加熱温度の大きさに起因するから、ボルト２１の加熱
温度を管理することにより、導入張力を管理できる。従
って、ボルト２１に与えるトルク管理によって導入張力
を管理するものでないため、ボルト２１の頭部の傾きや
軸部の曲がり、或いはボルト２１／ナット２２セットの
トルク係数のバラツキによらず、ボルト２１に適正な導
入張力を付与できる。The above-mentioned introduction tension is based on the amount of contraction of the shaft portion of the bolt 21, and this amount of contraction is the bolt 21.
Since it depends on the size of the heating temperature, the introduction tension can be controlled by controlling the heating temperature of the bolt 21. Therefore, since the introduction tension is not controlled by controlling the torque applied to the bolt 21, the bolt 21 does not depend on the inclination of the head of the bolt 21, the bending of the shaft, or the variation in the torque coefficient of the bolt 21 / nut 22 set. Appropriate introduction tension can be applied.
【００２７】作業者による締付操作は、ボルト２１の
頭部が床梁１１のボルト支持面に密着するものであれば
足り、締付操作力は軽くて足りる。The tightening operation by the operator is sufficient if the head of the bolt 21 is in close contact with the bolt supporting surface of the floor beam 11, and the tightening operation force is light.
【００２８】建物ユニット１０を構成する柱１２と梁
１１の接合において、上記〜を享受できる。In the connection of the pillar 12 and the beam 11 which form the building unit 10, the above-mentioned items 1 to 3 can be enjoyed.
【００２９】以上、本発明の実施の形態を図面により詳
述したが、本発明の具体的な構成はこの実施の形態に限
られるものではなく、本発明の要旨を逸脱しない範囲の
設計の変更等があっても本発明に含まれる。例えば、本
発明のボルト締結構造は、柱と梁の接合仕口に限らず、
梁と梁等２つの構造体の接合仕口に広く適用できる。The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and the design can be changed without departing from the gist of the present invention. Etc. are included in the present invention. For example, the bolt fastening structure of the present invention is not limited to the joint between the column and the beam,
It can be widely applied to joints of two structures such as beams.
【００３０】[0030]
【発明の効果】以上のように本発明によれば、２つの構
造体をボルト締結するに際し、締付操作力を軽減でき、
且つボルトに適正な導入張力を付与することができる。As described above, according to the present invention, when the two structures are bolted together, the tightening operation force can be reduced,
Moreover, it is possible to apply a proper introduction tension to the bolt.
【図１】図１はボルト締結構造を示す模式図である。FIG. 1 is a schematic view showing a bolt fastening structure.
【図２】図２は柱と梁の接合仕口を示す模式図である。FIG. 2 is a schematic diagram showing a joint between a column and a beam.
【図３】図３は建物ユニットを示す模式図である。FIG. 3 is a schematic diagram showing a building unit.
１０ 建物ユニット １１ 床梁 １２ 柱 １３ 天井梁 ２１ ボルト ２２ ナット 10 Building Units 11 Floor Beams 12 Pillars 13 Ceiling Beams 21 Bolts 22 Nuts
Claims (4)
するに際し、第１の構造体側に設けたボルト支持孔に挿
通されるボルトの雄ねじ部を、第２の構造体側に設けた
雌ねじ部に螺着し、ボルトに一定の張力を導入するボル
ト締結方法において、 ボルトの軸部を予め加熱し、このボルトの頭部が第１の
構造体側のボルト支持面に密着するまで該ボルトを第２
の構造体側の雌ねじ部に螺着し、該ボルトが常温に戻る
ことによるその軸部の縮み量に比例する張力を該ボルト
に導入することを特徴とするボルト締結方法。1. When bolting the first and second structures to each other, a male thread portion of a bolt to be inserted into a bolt supporting hole provided on the first structure side is provided on the second structure side. In a bolt tightening method in which a constant tension is applied to a bolt by being screwed to an internal thread portion, the bolt shaft portion is preheated, and the bolt head is brought into close contact with the bolt support surface on the first structure side. The second
The method of fastening a bolt, wherein the bolt is screwed to the internal thread portion on the structure side, and a tension proportional to the amount of contraction of the shaft portion of the bolt when the bolt returns to room temperature is introduced into the bolt.
するに際し、第１の構造体側に設けたボルト支持孔に挿
通されるボルトの雄ねじ部を、第２の構造体側に設けた
雌ねじ部に螺着し、ボルトに一定の張力を導入するボル
ト締結構造において、 予め軸部が加熱されたボルトの頭部が第１の構造体側の
ボルト支持面に密着するまで該ボルトが第２の構造体側
の雌ねじ部に螺着され、該ボルトが常温に戻ることによ
るその軸部の縮み量に比例する張力が該ボルトに導入せ
しめられるように構成されてなることを特徴とするボル
ト締結構造。2. A male screw portion of a bolt which is inserted into a bolt supporting hole provided on the first structure side when the first and second structures are bolted together is provided on the second structure side. In a bolt fastening structure that is screwed to an internal thread portion and introduces a constant tension to the bolt, the bolt has a second portion until the head portion of the bolt whose shaft portion has been heated comes into close contact with the bolt supporting surface on the first structure side. The bolt fastening structure characterized in that the bolt is screwed into the internal thread portion on the structure side, and a tension proportional to the amount of contraction of the shaft portion of the bolt when the bolt returns to room temperature is introduced into the bolt. .
成する柱と梁である請求項２記載のボルト締結構造。3. The bolt fastening structure according to claim 2, wherein the two structures are pillars and beams that form a building unit.
加熱温度ｔを、締付時の常温ｔ0 、ボルトに加える温度
変化量Δｔにより、ｔ＝ｔ0 ＋Δｔとするとき、 上記温度変化量Δｔは、張力Ｆに対応するボルトの歪ε
（ε＝σ／Ｅ、σ＝Ｆ／Ａ、但しσはボルトの引張応
力、Ｅはボルトの構成材料の縦弾性係数、Ａはボルトの
軸断面積）、ボルトの構成材料の熱膨張率αから、Δｔ
＝ε／αである請求項１記載のボルト締結方法。4. When the heating temperature t required to introduce the tension F into the bolt is set to t = t 0 + Δt by the room temperature t 0 at the time of tightening and the temperature change amount Δt applied to the bolt, the temperature change is The amount Δt is the strain ε of the bolt corresponding to the tension F.
(Ε = σ / E, σ = F / A, where σ is the tensile stress of the bolt, E is the longitudinal elastic modulus of the constituent material of the bolt, A is the axial cross-sectional area of the bolt), and the coefficient of thermal expansion α of the constituent material of the bolt From Δt
The bolt fastening method according to claim 1, wherein: ε / α.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13336896A JPH09317734A (en) | 1996-05-28 | 1996-05-28 | Bolt fastening method and its structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13336896A JPH09317734A (en) | 1996-05-28 | 1996-05-28 | Bolt fastening method and its structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09317734A true JPH09317734A (en) | 1997-12-09 |
Family
ID=15103100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13336896A Pending JPH09317734A (en) | 1996-05-28 | 1996-05-28 | Bolt fastening method and its structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09317734A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014189765A1 (en) * | 2013-05-23 | 2014-11-27 | Zimmer, Inc. | Heated bolt for modular hip stem |
| CN107363524A (en) * | 2017-08-10 | 2017-11-21 | 福建省石狮市通达电器有限公司 | One kind screws equipment |
-
1996
- 1996-05-28 JP JP13336896A patent/JPH09317734A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014189765A1 (en) * | 2013-05-23 | 2014-11-27 | Zimmer, Inc. | Heated bolt for modular hip stem |
| US10213312B2 (en) | 2013-05-23 | 2019-02-26 | Zimmer, Inc. | Heated bolt for modular hip stem |
| CN107363524A (en) * | 2017-08-10 | 2017-11-21 | 福建省石狮市通达电器有限公司 | One kind screws equipment |
| CN107363524B (en) * | 2017-08-10 | 2023-06-23 | 福建省石狮市通达电器有限公司 | Screw driving equipment |
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