JP4177741B2 - Bolt joining method for box-shaped cross-section material and metal fitting and bolt insertion jig for box-shaped cross-section material - Google Patents

Bolt joining method for box-shaped cross-section material and metal fitting and bolt insertion jig for box-shaped cross-section material Download PDF

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JP4177741B2
JP4177741B2 JP2003360353A JP2003360353A JP4177741B2 JP 4177741 B2 JP4177741 B2 JP 4177741B2 JP 2003360353 A JP2003360353 A JP 2003360353A JP 2003360353 A JP2003360353 A JP 2003360353A JP 4177741 B2 JP4177741 B2 JP 4177741B2
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bolt
box
shaped cross
flexible cable
tip
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JP2005127345A (en
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浩史 田中
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Nippon Steel Corp
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本発明は、例えば、鋼構造建築物を構築する際に閉鎖断面を有する角形鋼管、円形鋼管などの箱形断面材を柱材とし、この柱材にスプリットティ、アングル材などの接合金物を介してＨ形鋼などのＨ形断面梁をボルト接合する場合に適用される箱形断面材と接合金物のボルト接合方法と、この接合方法に用いられるボルト挿入治具に関するものである。   In the present invention, for example, when building a steel structure building, a box-shaped cross-section material such as a square steel pipe or a circular steel pipe having a closed cross section is used as a column material, and a joint metal such as a split tee or an angle material is connected to the column material. The present invention relates to a bolt-joining method of a box-shaped cross-section material and a joint hardware applied when bolting an H-shaped cross-section beam such as an H-shaped steel, and a bolt insertion jig used in this joining method.

近年、柱材として閉鎖断面を有する角形鋼管や円形鋼管などの箱形断面材を用い、梁材としてＨ形鋼を用いた箱形断面柱とＨ形断面梁との接合構造においては、従来の溶接接合構造に代えて、図８に示すように、箱形断面柱１とＨ形断面梁４を、上下一対のスプリットティ（接合金物）２ａ、２ｂと高力ボルト３、５を用いた高力ボルト接合構造が多用されている。
このボルト接合構造において、ナット側で締め付けを行う高力ボルト３を用いて箱形断面柱１に上下一対のスプリットティ２ａ、２ｂを高力ボルト３で接合する場合、高力ボルト３を箱形断面柱１の内部側から挿入する必要がある場合が多いことから、箱形断面柱１の内部側からの高力ボルト３の挿入治具や挿入方法が種々提案されている。 In recent years, in a junction structure of a box-shaped cross-section column using H-shaped steel as a beam material and a box-shaped cross-section material such as a square steel pipe or a circular steel pipe having a closed cross section as a column material, As shown in FIG. 8, instead of the welded joint structure, a box-shaped cross-section column 1 and an H-shaped cross-section beam 4 are formed by using a pair of upper and lower split tees (joint hardware) 2a, 2b and high-strength bolts 3, 5. Force bolt joint structure is often used.
In this bolt joint structure, when the pair of upper and lower split ties 2a, 2b are joined to the box-shaped cross-section column 1 with the high strength bolt 3 using the high strength bolt 3 tightened on the nut side, the high strength bolt 3 is box-shaped. Since it is often necessary to insert from the inner side of the cross-sectional column 1, various insertion jigs and insertion methods for the high-strength bolt 3 from the inner side of the box-shaped cross-sectional column 1 have been proposed.

例えば、特許文献１にはトルシア型ボルト装着用工具及び接合方法が提案されている。ここに開示されている、ボルト装着用工具は、鋼管柱の側面に穿設されたボルト孔に、鋼管柱の内側からトルシア型ボルトを装着するためのものであって、先端部に着脱自在に係止可能な係合部、長尺状の挿入ガイド部、及び係合部と挿入ガイド部の後端とを連結する連結部を有しており、係合部はボルトのノッチ部に係合し、挿入ガイド部はその先端部から鋼管柱の側面に設けられた操作挿入孔に挿入され、鋼管柱の外側からの操作により、先端が所定のボルト孔に案内され得るようにしたものである。
このボルト装着用工具は、簡易な構造を有し、簡易な操作により、鋼管柱の側面に穿設されたボルト孔に、鋼管柱の内側からトルシア型ボルトを挿入するために有効なものと思われる。 For example, Patent Document 1 proposes a tool and a joining method for Torcia bolts. The bolt mounting tool disclosed herein is for mounting a Torcia bolt from the inside of a steel pipe column into a bolt hole drilled in the side surface of the steel pipe column, and is detachable at the tip. It has an engaging portion that can be locked, a long insertion guide portion, and a connecting portion that connects the engagement portion and the rear end of the insertion guide portion, and the engagement portion engages with a notch portion of the bolt. The insertion guide portion is inserted into the operation insertion hole provided on the side surface of the steel pipe column from the tip portion, and the tip can be guided to the predetermined bolt hole by the operation from the outside of the steel tube column. .
This bolt mounting tool has a simple structure and is thought to be effective for inserting the Torcia bolt from the inside of the steel pipe column into the bolt hole drilled in the side surface of the steel pipe column by simple operation. It is.

しかし、挿入ガイドに連結された係合部に係合されたトルシア型ボルトは、常に自由に揺動可能な状態で挿入ガイドでガイドされるため、鋼管柱側面のボルト孔に挿入するとき、自重で吊り下がった状態になって先端がボルト孔に挿入する角度に対して直角方向を向くことになることから、挿入ガイドの操作によってボルト孔に円滑にガイド・挿入することが難しい。
また、このとき、無理してボルト孔に挿入しようとした場合、係合部がボルト孔の入口にぶつかって、係止が外れる懸念がある。さらに、挿入ガイドは、鋼管柱の側面に設けられた大きい径の操作挿入孔から挿入してその先端を小さな径のボルト孔に挿入するため、位置合わせが難しいこという問題もあり改善の余地がある。
特開平１０−１８４６３９号公報 However, since the Torcia-type bolt engaged with the engaging portion connected to the insertion guide is always guided by the insertion guide in a freely swingable state, when inserting it into the bolt hole on the side surface of the steel pipe column, Since the tip is directed in a direction perpendicular to the angle at which the tip is inserted into the bolt hole, it is difficult to smoothly guide and insert into the bolt hole by operating the insertion guide.
Further, at this time, if the insertion is forced into the bolt hole, there is a concern that the engaging portion hits the inlet of the bolt hole and the locking is released. Furthermore, since the insertion guide is inserted through the large diameter operation insertion hole provided on the side surface of the steel pipe column and the tip is inserted into the small diameter bolt hole, there is a problem that alignment is difficult and there is room for improvement. is there.
Japanese Patent Application Laid-Open No. 10-184439

本発明は、角形鋼管柱などの箱形断面柱に、スプリットティなどの接合金物をボルト接合する場合に、例えば特許文献１の発明の問題点を改善でき、外部側でナットを螺合して締め付けるトルシア型高力ボルトを、箱形断面柱の内部からボルト孔に簡易に挿入して、外側でナットを締め付け可能な箱形断面柱と接合金物とのボルト接合方法と、ボルト挿入治具を提供するものである。   The present invention can improve, for example, the problem of the invention of Patent Document 1 when a joint metal such as a split tee is bolted to a box-shaped cross-section column such as a square steel pipe column, and a nut is screwed on the outside. A torcia-type high-strength bolt to be tightened can be easily inserted into the bolt hole from the inside of the box-shaped cross-section column, and a bolt-joining method between the box-shaped cross-section column and the joint hardware that can tighten the nut on the outside and a bolt insertion jig It is to provide.

本発明は、上記の課題を解決する、下記（１）〜（３）の発明から構成されるものである。
（１）箱形断面材に接合金物を当接してボルト接合する際に、箱形断面材の接合部近くにボルト頭部径より大きいボルト挿入孔を明けておき、この箱形断面材に当接した接合金物の外部側からボルト孔に、先端部にボルト把持具との連結部を有する可撓ケーブルを挿入し、この可撓ケーブルの先端部を箱形断面柱の内部経由で上記ボルト挿入孔から外部に突出させて、ボルトを把持したボルト把持具を着脱自在に連結して引き戻し、ボルト把持具を箱形断面柱の内部からボルト孔経由で接合金物の外部に引き出し、可撓ケーブルの先端部に連結するボルト把持具として、可撓ケーブルの先端部の連結部に連結する把持連結部と、この把持連結部に連結ピンを介して回動可能に連結したボルト把持キャップによりなるものであり、この連結部には回転範囲を規定するストッパーがあり、把持連結部と把持キャップが真直ぐの状態から一方向にのみ角度（α）９０度回動可能に連結していることを特徴とする箱形断面材と接合金物とのボルト接合方法。
（２）先端部にボルト把持具を連結可能な可撓ケーブルと、この可撓ケーブルの先端方向変更機構と、可撓ケーブルに着脱自在に連結可能なボルト把持具とを備え、可撓ケーブルに着脱自在に連結可能なボルト把持具が、連結把持部と、この連結把持部に連結したボルト把持キャップからなり、可撓ケーブルの先端部の連結部に連結する把持連結部と、この把持連結部に連結ピンを介して回動可能に連結したボルト把持キャップによりなるものであり、この連結部には回転範囲を規定するストッパーがあり、把持連結部と把持キャップが真直ぐの状態から一方向にのみ角度（α）９０度回動可能に連結していることを特徴とする箱形断面材へのボルト挿入治具。
（３）内視鏡を装着して、その挿入チューブを可撓ケーブルに内蔵させ、箱形断面材のボルト挿入孔の位置を確認可能にしたことを特徴とする（２）に記載の箱形断面材へのボルト挿入治具。 The present invention solves the above problem, are those composed of the following inventions (1) to (3).
(1) When a joint is brought into contact with a box-shaped cross-section material and a bolt is joined, a bolt insertion hole larger than the bolt head diameter is made near the joint of the box-shaped cross-section material. Insert a flexible cable having a connecting part with a bolt gripping tool at the tip part into the bolt hole from the outside of the joint metal fitting in contact, and insert the bolt through the inside of the box-shaped cross-section column at the tip part of the flexible cable. The bolt gripping tool that grips the bolt is detachably connected and pulled back through the hole, and the bolt gripping tool is pulled out from the inside of the box-shaped cross-section column to the outside of the joint hardware by using the flexible cable. As a bolt gripping tool to be connected to the distal end portion, a grip connecting portion to be connected to the connecting portion at the distal end portion of the flexible cable, and a bolt gripping cap that is rotatably connected to the grip connecting portion via a connecting pin. Yes, in this connection There is a stopper for defining the rotation range, the angle of the grip connecting part and the grip cap straight state only in one direction (alpha) 90 ° pivotally connected to and that the box-section material and wherein the junction fittings Bolt joining method.
(2) A flexible cable that can connect a bolt gripping tool to the tip, a tip direction changing mechanism of the flexible cable, and a bolt gripping tool that can be detachably connected to the flexible cable. A bolt gripper that can be detachably connected includes a connection grip portion and a bolt grip cap connected to the connection grip portion, and a grip connection portion that connects to the connection portion of the distal end portion of the flexible cable, and the grip connection portion. It is made up of a bolt gripping cap that is pivotally connected to the pin via a connecting pin, and this connecting part has a stopper that defines the rotation range, and the gripping connecting part and the gripping cap are only in one direction from a straight state. A bolt insertion jig to a box-shaped cross-section member, which is connected so as to be able to rotate at an angle (α) of 90 degrees .
( 3 ) The box shape according to (2) , wherein the endoscope is attached and the insertion tube is built in the flexible cable so that the position of the bolt insertion hole of the box-shaped cross-section material can be confirmed. Bolt insertion jig for cross-section material.

本発明では、箱形断面材に接合金物を、トルシア型高力ボルトで接合する際に、工場や施工現場において、箱形断面柱に接合金物を当接した状態で、外部操作で箱形断面柱の内部側から高力ボルトをボルト孔に容易にかつ円滑に挿入することができ、施工性を大幅に向上させ、施工工期を短縮し、トータルの施工コストを大幅に節減することが可能である。   In the present invention, when joining a metal fitting to a box-shaped cross-section material with a Torcia-type high-strength bolt, in a factory or construction site, the box-shaped cross-section is externally operated in a state where the metal fitting is in contact with the box-shaped cross-section column. High-strength bolts can be easily and smoothly inserted into the bolt holes from the inside of the column, greatly improving workability, shortening the construction period, and greatly reducing total construction costs. is there.

本発明は、箱形断面材とＨ形断面梁を、接合金物を介してボルト接合する場合において、箱形断面材に接合金物を、例えばトルク導入用のピンテールを有しナットを締め付けて締結するトルシア型高力ボルト（以下「高力ボルトという。）を用いて接合する場合に適用するものであり、箱形断面材の内部側に高力ボルトを挿入する場合に、先端部にボルト把持具と着脱自在な連結部を有する可撓ケーブルと、この可撓ケーブルの先端方向変更機構と、ボルト把持具を備えたボルト挿入治具を用いるものである。
より具体的には、箱形断面材の接合部近くに、高力ボルトの頭部径より大きいボルト挿入孔を明け、箱形断面材に接合金物を当接し、この接合金物の外部側からボルト孔に、締結ナット（および座金）を挿通した可撓ケーブルを挿入し、この可撓ケーブルの先端部を上記箱形断面材の内部経由で、ボルト挿入孔から外部側に突出させて、高力ボルトを把持したボルト把持具を連結して引き戻すことによって、ボルト把持具を箱形断面材の内部およびボルト孔経由で、箱形断面材に当接した接合金物の外部側に高力ボルトの先端部が突出する位置まで引き出して、ボルト把持具で把持状態の高力ボルトに締結ナットを螺合して仮締めし、ボルト把持具を高力ボルトから外してから本締結する。可撓ケーブルとボルト把持具の連結解除は、例えば接合金物の外部側に高力ボルトの先端部を突出する位置まで引き出した後に適時行う。
なお、締結ナット（および座金）は、可撓ケーブルをボルト挿入孔に挿入する前に可撓ケーブルに挿通しないで、例えば接合金物の外部側に高力ボルトの先端部が突出する位置まで引き出して、ボルト把持具と可撓ケーブルの連結を解除してから高力ボルトを把持したボルト把持具の端部から挿入して高力ボルトに螺合し仮締めしてボルト把持具を高力ボルトから外してから本締結することもできる。 In the present invention, when a box-shaped cross-section material and an H-shaped cross-section beam are bolted via a joint metal, the joint metal is fastened to the box-shaped cross-section material, for example, by having a pin tail for torque introduction and fastening a nut. Applicable when joining using torcia type high strength bolts (hereinafter referred to as “high strength bolts”). When inserting high strength bolts inside the box-shaped cross-section material, bolt gripping tool at the tip. And a flexible cable having a detachable connecting portion, a tip direction changing mechanism of the flexible cable, and a bolt insertion jig provided with a bolt gripping tool.
More specifically, a bolt insertion hole larger than the head diameter of the high-strength bolt is made near the joint of the box-shaped cross-section material, the joint metal is brought into contact with the box-shaped cross-section material, and the bolt is connected from the outside of the joint metal. Insert a flexible cable through which the fastening nut (and washer) is inserted into the hole, and project the tip of this flexible cable from the bolt insertion hole to the outside via the inside of the box-shaped cross-section material. By connecting and pulling back the bolt gripping tool that grips the bolt, the bolt gripping tool is connected to the inside of the box-shaped cross-section material and to the outside of the joint hardware contacting the box-shaped cross-section material via the bolt hole. The part is pulled out to a position where it protrudes, and a fastening nut is screwed into a high-strength bolt held by a bolt gripper and temporarily tightened, and the bolt gripper is removed from the high-strength bolt and finally tightened. The connection between the flexible cable and the bolt gripper is released in a timely manner after, for example, pulling out the tip of the high-strength bolt to the outside of the joint hardware.
Note that the fastening nut (and the washer) should not be inserted through the flexible cable before inserting the flexible cable into the bolt insertion hole, for example, pulled out to a position where the tip of the high-strength bolt protrudes outside the joint metal. After releasing the connection between the bolt gripper and the flexible cable, the bolt gripper is inserted from the end of the bolt gripper that grips the high-strength bolt, screwed into the high-strength bolt, and temporarily tightened to remove the bolt gripper from the high-strength bolt. It is also possible to conclude the book after removing it.

本発明では、可撓ケーブルを、箱形断面材の接合部近くに明けた径の小さいボルト孔から挿入して、箱形断面材の内部経由で径の大きいボルト挿入孔から外部側に突出させることによって、ボルト挿入孔に対する可撓ケーブル先端の位置合わせ・挿入を容易にする。この可撓ケーブルの先端部は、ボルト挿入孔に容易に挿入可能にするために、なるべく細くし単純形状にすることが好ましいことから、可撓ケーブルとボルト把持具の連結は、可撓ケーブルをボルト挿入孔に挿入して接合金物の外部に突出させてから行うことが好ましい。
また、可撓棒ケーブルに連結するボルト把持具としては、可撓ケーブルに着脱自在に連結可能な把持連結部と、この把持連結部に一方向に回動可能に連結したボルト把持キャップを有するものを用い、把持連結部を軸回りに回動することにより、箱形断面材の内部からボルト孔に挿入する場合に、ボルト把持キャップに把持した高力ボルトをボルト孔に平行に近い状態で挿入できる角度にして、ボルト孔への高力ボルトの挿入を円滑化できるようにすることが好ましい。
なお、可撓ケーブルの先端にボルト保持キャップを形成することもできるが、この場合、内部スペース条件、可撓ケーブルの操作性などの制限条件がある。 In the present invention, the flexible cable is inserted from the bolt hole having a small diameter near the joint portion of the box-shaped cross-section material, and protrudes from the bolt insertion hole having a large diameter to the outside via the inside of the box-shaped cross-section material. This facilitates alignment and insertion of the distal end of the flexible cable with respect to the bolt insertion hole. Since the tip of this flexible cable is preferably made as thin and simple as possible so that it can be easily inserted into the bolt insertion hole, the connection between the flexible cable and the bolt gripper is not It is preferable to carry out after inserting it into the bolt insertion hole and projecting it out of the metal joint.
In addition, the bolt gripping tool connected to the flexible rod cable has a grip connecting portion that can be detachably connected to the flexible cable, and a bolt grip cap that is connected to the grip connecting portion so as to be rotatable in one direction. When inserting into the bolt hole from the inside of the box-shaped cross-section material by rotating the grip connecting part around the axis, insert the high-strength bolt gripped by the bolt grip cap in a state almost parallel to the bolt hole It is preferable to make the insertion of the high-strength bolt into the bolt hole smooth so that the angle can be made.
In addition, although a bolt holding cap can also be formed at the front-end | tip of a flexible cable, there are restrictions conditions, such as internal space conditions and the operativity of a flexible cable, in this case.

本発明では、箱形断面材の接合金物との接合部近くの側面にボルト挿入孔を明けるが、このボルト挿入孔は、径が大きい方がボルト挿入作業が容易になるが、箱形断面材の強度低下の要因になるため、径は、ボルト頭部（座金使用の場合には、座金外径）より若干大きくして、数は極力少なく明けることが好ましい。
例えば、ボルト挿入孔を、例えば、接合金物が上下一対のスプリットティである場合には、上下のスプリットティの中間部に明けて上下のスプリットティを接合するボルト挿入に共用できるようにすることもできるが、ボルト挿入孔がボルト孔の上部にある場合には、ボルトを箱形断面材内部に挿入する場合に落下衝撃が大きくなるので、可撓ケーブルの操作性が低下したり、ボルトの脱落の懸念があることから、ボルト挿入孔がボルト孔の下部にあることが好ましい。なお、ボルト挿入孔は、可撓ケーブルの先端の位置合わせを容易にするために、長孔にすることも考慮することができる。
ボルト挿入孔は、箱形断面材の同じ側面にあるボルト孔用にのみ用いることは必須ではなく、箱形断面材の複数の側面にあるボルト孔用としても用いることもできる。したがって、このボルト挿入孔は、箱形断面材の強度低下を極力抑制でき、複数のボルト孔に対して効率的に高力ボルトを挿入できる位置に明けるものである。 In the present invention, a bolt insertion hole is formed on the side surface near the joint portion of the box-shaped cross-section material with the joint metal. The bolt insertion hole has a larger diameter, but the bolt insertion work becomes easier. Therefore, it is preferable that the diameter is slightly larger than the bolt head (the outer diameter of the washer when a washer is used) and the number is as small as possible.
For example, the bolt insertion hole may be used for bolt insertion that joins the upper and lower split tees by opening the middle part of the upper and lower split tees when the metal fitting is a pair of upper and lower split tees, for example. However, if the bolt insertion hole is at the top of the bolt hole, the drop impact will increase when the bolt is inserted into the box-shaped cross-section material. Therefore, the bolt insertion hole is preferably located below the bolt hole. The bolt insertion hole can be considered to be a long hole in order to facilitate alignment of the tip of the flexible cable.
It is not essential to use the bolt insertion holes only for the bolt holes on the same side surface of the box-shaped cross-section material, and the bolt insertion holes can also be used for bolt holes on a plurality of side surfaces of the box-shaped cross-section material. Therefore, this bolt insertion hole can open the position which can suppress the strength fall of a box-shaped cross-section material as much as possible, and can insert a high strength bolt efficiently with respect to a plurality of bolt holes.

本発明で用いるボルト挿入治具は、基本的には、先端部にボルト把持具を着脱自在に連結可能な可撓ケーブルと、この可撓ケーブルの先端方向変更機構と、ボルト把持キャップを有する把持具を備えたものである。可撓ケーブルに連結するボルト把持具は、基本的には、可撓ケーブルの先端部を、ボルト孔に挿入して箱形断面材の内部経由ボルト挿入孔から外部側に突出させてから、この可撓ケーブルの先端部に連結するものである。
なお、ボルト挿入治具に、例えば工業用内視鏡（ファイバースコープ）を装着し、その挿入チューブを可撓ケーブルに内蔵させて、箱形断面材のボルト挿入孔の位置を容易に確認でき、可撓ケーブルの先端を容易に挿入できるようにすることも有効である。この場合、ボルト挿入孔の外部側に照明を当てボルト挿入孔の位置をより明確に確認できるようにすることも考慮する。 The bolt insertion jig used in the present invention basically includes a flexible cable in which a bolt gripping tool can be detachably connected to the tip, a tip direction changing mechanism of the flexible cable, and a grip having a bolt gripping cap. It is equipped with ingredients. The bolt gripper connected to the flexible cable basically has the tip of the flexible cable inserted into the bolt hole and protrudes outward from the internal bolt insertion hole of the box-shaped cross-section material. It connects with the front-end | tip part of a flexible cable.
For example, an industrial endoscope (fiberscope) is attached to the bolt insertion jig, and the insertion tube is built in the flexible cable, so that the position of the bolt insertion hole of the box-shaped cross-section material can be easily confirmed, It is also effective to enable easy insertion of the tip of the flexible cable. In this case, it is also considered to illuminate the outside of the bolt insertion hole so that the position of the bolt insertion hole can be confirmed more clearly.

ボルト把持具は、基本的には、可撓ケーブルに係合して連結する把持連結部と、この把持連結部に一方向に回動可能（例えば肘関節のように把持連結部と平行〜一方向に９０度の範囲で回動可）に連結したボルト把持キャップとからなり、この把持キャップに高力ボルトのピンテール部を把持するようにしたものである。このボルト把持キャップは、高力ボルトのピンテール部を確実に把持できるように、スリットを設けて弾性的な把持構造とし、先端部に高力ボルトのピンテールのノッチに係止する爪を形成することも有効である。
なお、ボルト把持具（ボルト把持キャップを含む）は、締結ナットの孔を通り抜けできる必要があるため、外径を締結ナットの孔径よりも小さくする必要がある。また、可撓ケーブルを、締結ナットを挿通してボルト孔に挿入する場合には、可撓ケーブルの挿入部の外径を締結ナットの孔径よりも小さくする必要がある。 The bolt gripping tool basically has a gripping connecting portion that engages and connects with a flexible cable, and can rotate in one direction with the gripping connecting portion (for example, parallel to the gripping connecting portion like an elbow joint). And a bolt grip cap connected to the grip cap so as to grip a pin tail portion of a high-strength bolt. This bolt grip cap has an elastic grip structure with a slit so that the pin tail portion of the high strength bolt can be securely gripped, and a claw that engages with the notch of the pin tail of the high strength bolt is formed at the tip portion. Is also effective.
Note that the bolt gripper (including the bolt gripping cap) needs to be able to pass through the hole of the fastening nut, so the outer diameter needs to be smaller than the hole diameter of the fastening nut. Moreover, when inserting a flexible cable through a fastening nut and inserting it in a bolt hole, it is necessary to make the outer diameter of the insertion part of a flexible cable smaller than the hole diameter of a fastening nut.

以下に本発明の実施例について、図１〜図８に基づいて説明する。
この実施例は、箱形断面柱１の側面に接合金物である上下一対のスプリットティを介してＨ形鋼梁を高力ボルト接合する場合において、箱形断面柱１の側面に上下一対のスプリットティを高力ボルト３で接合する場合に適用した例を示したものである。
通常の場合、上下一対のスプリットティは、箱形断面柱１の１〜４側面に高力ボルト接合されるものであるが、ここでは箱形断面柱１の１側面に上下一対のスプリットティを高力ボルト接合する場合で、上部スプリットティ２ａの下側を箱形断面柱１に接合する高力ボルト３を、箱形断面柱１の内部からボルト孔１ｏ、上部スプリットティ２ａのボルト孔２ｏに挿入して、スプリットティ２ａの外部側で締結ナット６を螺合・締結する場合で代表説明する。
図１（ａ）は、本発明によるボルト挿入治具７の可撓ケーブル８を、締結ナット６を挿通した状態で、箱形断面柱１に当接した上部スプリットティ２ａのボルト孔２ｏの外部側から、箱形断面柱１の側面に明けたボルト挿入孔１１に向けて挿入した状態を示している。
ボルト挿入治具７は、先端部に図２（ａ）、（ｂ）に示すようなボルト把持具１２との連結部を８ｃを有する可撓ケーブル８と、この可撓ケーブル８の先端の方向を変更するレバー１０を備えた先端方向変更機構９を有するものである。ここで用いた先端方向変更機構９は、レバー１０を回動することによって、可撓ケーブル８の湾曲度を調整する構造を有するものである。
ここで、ボルト挿入治具７に、例えば工業用内視鏡１９を装着した場合には、箱形断面材のボルト挿入孔１１に可撓ケーブル８を挿入するときに、この内視鏡１９でボルト挿入孔１１の位置を確認しながらレバー１０を操作し、可撓ケーブル８の先端をボルト挿入孔１１に、より容易に挿入することができる。 Embodiments of the present invention will be described below with reference to FIGS.
In this embodiment, in the case where an H-shaped steel beam is joined to the side surface of the box-shaped cross-section column 1 via a pair of upper and lower split tees which are joint hardware, a pair of upper and lower splits are formed on the side surface of the box-shaped cross-section column 1. The example applied when joining a tee with the high strength volt | bolt 3 is shown.
In a normal case, the pair of upper and lower split tees are high-strength bolted to the side surfaces 1 to 4 of the box-shaped cross-section column 1. In the case of high-strength bolt joining, the high-strength bolt 3 that joins the lower side of the upper split tee 2a to the box-shaped cross-section column 1 is connected to the bolt hole 1o from the inside of the box-shaped cross-section column 1 and the bolt hole 2o of the upper split tee 2a. And a case where the fastening nut 6 is screwed and fastened to the outside of the split tee 2a.
FIG. 1 (a) shows the exterior of the bolt hole 2o of the upper split tee 2a in contact with the box-shaped cross-section column 1 with the flexible cable 8 of the bolt insertion jig 7 according to the present invention inserted through the fastening nut 6. From the side, it shows a state of being inserted toward the bolt insertion hole 11 opened on the side surface of the box-shaped cross-section column 1.
The bolt insertion jig 7 includes a flexible cable 8 having a connecting portion 8c connected to a bolt gripping tool 12 as shown in FIGS. 2A and 2B at the tip, and the direction of the tip of the flexible cable 8. It has a tip direction changing mechanism 9 provided with a lever 10 for changing. The tip direction changing mechanism 9 used here has a structure in which the bending degree of the flexible cable 8 is adjusted by rotating the lever 10.
Here, when the industrial endoscope 19 is attached to the bolt insertion jig 7, for example, when the flexible cable 8 is inserted into the bolt insertion hole 11 of the box-shaped cross-section material, By operating the lever 10 while confirming the position of the bolt insertion hole 11, the tip of the flexible cable 8 can be more easily inserted into the bolt insertion hole 11.

図１（ｂ）は、図１（ａ）の状態から、ボルト挿入治具７の先端方向変更機構９のレバー１０操作により、可撓ケーブル８の挿入部を湾曲させ、先端部の連結部８ｃを箱形断面柱１のボルト挿入孔１１に挿入して外部に突出させ、図２のボルト把持具１２を連結できる状態を示している。
ボルト把持具１２は、図２（ａ）、（ｂ）に示すように、可撓ケーブル８の先端部の連結部８ｃに連結する把持連結部１３と、この把持連結部１３に連結ピン１４を介して回動可能に連結したボルト把持キャップ１５によりなるものである。このボルト把持キャップ１５には、回動範囲を規定するストッパー１６があり、ここではボルト把持キャップ１５を一方向に角度（α）９０度回動可能に連結している。
ここでは、可撓ケーブル８の先端部の連結部８ｃと把持連結部１３を嵌合する場合は、回動可能な一方向が判別しやすいように、可撓ケーブル８の軸回り角度目盛りに対応して把持キャップ１５のストッパー１６の位置を確認できるように連結位置を固定できるようにしている。 In FIG. 1B, the insertion portion of the flexible cable 8 is bent from the state of FIG. 1A by operating the lever 10 of the tip direction changing mechanism 9 of the bolt insertion jig 7, and the connecting portion 8 c of the tip portion is bent. 2 is inserted into the bolt insertion hole 11 of the box-shaped cross-section column 1 and protruded to the outside, and the bolt gripping tool 12 of FIG. 2 can be connected.
As shown in FIGS. 2 (a) and 2 (b), the bolt gripping tool 12 includes a gripping connecting portion 13 that is connected to the connecting portion 8 c of the distal end portion of the flexible cable 8, and a connecting pin 14 that is connected to the gripping connecting portion 13. And a bolt gripping cap 15 connected so as to be pivotable. The bolt gripping cap 15 has a stopper 16 that defines a rotation range. Here, the bolt gripping cap 15 is connected to be pivotable at an angle (α) 90 degrees in one direction.
Here, when fitting the connecting portion 8c at the distal end of the flexible cable 8 and the grip connecting portion 13, it corresponds to the angle scale around the axis of the flexible cable 8 so that one direction of rotation can be easily identified. Thus, the coupling position can be fixed so that the position of the stopper 16 of the grip cap 15 can be confirmed.

なお、把持連結部１３は、ここでは手で掴み回動操作を行うこともあり、周面に滑り止めを施したものであり、可撓ケーブル８の連結部８ｃとの連結を、嵌合（差し込み）により行うようにしているため、スリット１７を設けて弾性的に嵌合できるようにしている。また、ボルト把持部キャップ１５には、トルシア型の高力ボルト３のピンテール３ｐを嵌合（差し込み）して把持するようにしているため、スリット１８を設けて弾性的に嵌合できるようにしている。
トルシア形高力ボルト３は、図３に示すように、頭部３ｔと雄ねじ３ｓを有し、雄ねじ３ｓの先端部側にはノッチ３ｎを介してトルク導入用のピンテール３ｐを形成したものである。 Here, the grip connecting portion 13 may be gripped and rotated by hand, and the peripheral surface is provided with anti-slip, and the connection with the connecting portion 8c of the flexible cable 8 is fitted ( Therefore, the slit 17 is provided so that it can be elastically fitted. In addition, since the pintail 3p of the Torcia-type high-strength bolt 3 is fitted (inserted) and held in the bolt gripping cap 15, a slit 18 is provided so that it can be elastically fitted. Yes.
As shown in FIG. 3, the torcia-type high-strength bolt 3 has a head 3t and a male screw 3s, and a pin tail 3p for introducing torque is formed on the tip of the male screw 3s through a notch 3n. .

図５は、図１（ｂ）の状態で、ボルト挿入孔１１から外部に突出させた可撓ケーブル８の連結部８ｃに、図４に示すようにボルト把持キャップ１５に図３に示ような高力ボルト３のピンテール３ｐを嵌合（差し込み）したボルト把持具７の把持連結部１３を連結した状態を示している。ここでは、トルシア形高力ボルト３は、自重で概ね倒立状態（頭部３ｔが下の状態）になっている。
図６（ａ）は、図５の状態から可撓ケーブル８を引き戻して、可撓ケーブル８の先端に連結したボルト把持具１２をボルト挿入孔１１から箱形断面柱１の内部に引き込み、ボルト把持具１２の把持連結部１３の先端部を、箱形断面柱１のボルト孔１ｏから挿入してスプリットティ２ａのボルト孔２ｏの外部側に突出させた状態を示している。 FIG. 5 shows a connecting portion 8c of the flexible cable 8 projecting outward from the bolt insertion hole 11 in the state of FIG. 1B, and a bolt gripping cap 15 as shown in FIG. The state which connected the holding | grip connection part 13 of the bolt holding tool 7 which fitted the pin tail 3p of the high strength bolt 3 (insertion) is shown. Here, the torcia-type high-strength bolt 3 is generally in an inverted state (with the head 3t below) under its own weight.
6A, the flexible cable 8 is pulled back from the state of FIG. 5, and the bolt gripping tool 12 connected to the tip of the flexible cable 8 is pulled into the box-shaped cross-section column 1 from the bolt insertion hole 11, and the bolt A state is shown in which the distal end portion of the grip connecting portion 13 of the gripping tool 12 is inserted from the bolt hole 1o of the box-shaped cross-section column 1 and protrudes to the outside of the bolt hole 2o of the split tee 2a.

この状態での高力ボルト３は、ボルト孔１ｏの入口で概ね倒立状態（頭部３ｔが下の状態）にあるため、ボルト孔１ｏに円滑に挿入できないことから、把持連結部１３を回動して、図６（ｂ）の状態（９０度回動）、図６（ｃ）の状態（頭部３ｔが上の状態）を経て、図６（ｄ）に示すように、高力ボルト３をボルト孔１ｏに平行な状態にして外部側に引き出して、把持連結部１３から可撓ケーブル８の先端８ｃを取り外し、高力ボルト３の先端部を外部側に突出させて、図６（ｅ）に示すように、締結ナット６を螺合する。螺合した後に高力ボルト３からボルト把持キャップ１５を外し、締結ナット６を仮締めする。   The high-strength bolt 3 in this state is generally in an inverted state at the inlet of the bolt hole 1o (the head 3t is in the lower state) and therefore cannot be smoothly inserted into the bolt hole 1o. Then, after the state shown in FIG. 6B (90-degree rotation) and the state shown in FIG. 6C (the head 3t is in the upward state), as shown in FIG. 6 is pulled out to the outside in a state parallel to the bolt hole 1o, the tip 8c of the flexible cable 8 is removed from the grip connecting portion 13, and the tip of the high-strength bolt 3 is protruded to the outside. The fastening nut 6 is screwed as shown in FIG. After screwing, the bolt grip cap 15 is removed from the high-strength bolt 3 and the fastening nut 6 is temporarily tightened.

このようにして、各高力ボルト３による仮締め付けを順次行った後に、仮締めした各締結ナット６を締結具で本締め付けして、図７に示すように、箱形断面柱１と上部スプリットティ２ａの高力ボルト接合を終了する。下部スプリットティ２ｂについても、上部スプリットティ２ａと同様にして、箱形断面柱１に高力ボルト接合することができる。
なお、箱形断面柱１に対する上部スプリットティ２ａと下部スプリットティ２ｂの接合は、工場、現場のいずれか、または、工場と現場で分けて行ってもよく、上部スプリットティ２ａと下部スプリットティ２ｂの接合手順は任意に選択できるものである。 In this way, after temporarily tightening with the high-strength bolts 3 in sequence, the temporarily tightened fastening nuts 6 are finally tightened with fasteners, and as shown in FIG. The high strength bolt joining of the tee 2a is finished. Similarly to the upper split tee 2a, the lower split tee 2b can be joined to the box-shaped cross-section column 1 with high-strength bolts.
The upper split tee 2a and the lower split tee 2b may be joined to the box-shaped cross-section column 1 either at the factory or at the site, or separately at the factory and the site. The upper split tee 2a and the lower split tee 2b The joining procedure can be arbitrarily selected.

本発明は、上記の実施例に限定されるものではない。例えば、上記の実施例は、箱形断面柱（角形鋼管柱）とスプリットティ（接合金物）とのボルト接合に適用したものであるが、他の箱形断面柱（例えば円形鋼管柱）、他の接合金物（例えばアングル材など）を接合対象としても適用することもできる。
また、ボルト挿入孔の形成条件（位置、数、大きさなど）、ボルト挿入治具の構造（可撓ケーブル、先端方向変更機構、ボルト把持具、内視鏡の装着の有無など）の構造条件（各連結構造を含む）、ボルト挿入治具によるボルト挿入・ナット螺合・締結手順等については、接合対象の箱形断面柱、接合金物、梁等のサイズ、ボルトの形状とサイズ、ボルトの孔径、配置等に応じて上記請求項を満足する範囲内で変更のあるものである。 The present invention is not limited to the above embodiments. For example, the above embodiment is applied to a bolted connection between a box-shaped column (square steel tube column) and a split tee (joint metal), but other box-shaped columns (for example, circular steel tube columns), etc. It is also possible to apply a metal fitting (for example, an angle material) as a bonding target.
In addition, bolt insertion hole formation conditions (position, number, size, etc.), bolt insertion jig structure (flexible cable, tip direction change mechanism, bolt gripper, presence of endoscope, etc.) (Including each connecting structure), bolt insertion / nut screwing / fastening procedures, etc. with bolt insertion jigs, size of box-shaped cross-section columns to be joined, metal fittings, beams, etc., bolt shape and size, bolt There is a change within a range satisfying the above claims according to the hole diameter, arrangement, and the like.

本発明の実施例での箱形断面柱とスプリットティとの接合構造例を示す部分説明図で、（ａ）図は、箱形断面柱に当接したスプリットティの外部側からボルト孔に、締結ナットを挿通した可撓ケーブルを挿入した状態を示す側断面説明図、（ｂ）図は、（ａ）図の状態から可撓ケーブルを湾曲させて先端部をボルト挿入孔から外部に突出させた状態を示す側面説明図。It is a partial explanatory view showing an example of a joint structure between a box-shaped cross-section column and a split tee in an embodiment of the present invention, and (a) a figure is a bolt hole from the outside of the split tee in contact with the box-shaped cross-section column, Side cross-section explanatory drawing which shows the state which inserted the flexible cable which penetrated the fastening nut, (b) A figure curves a flexible cable from the state of (a) figure, and makes a front-end | tip part protrude outside from a bolt insertion hole. Side surface explanatory drawing which shows the state. 本発明の実施例で用いるボルト把持具の構造例を示す説明図で、（ａ）図は、平面（裏面）説明図、（ｂ）図は、（ａ）図の正面説明図。BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows the structural example of the bolt holding tool used in the Example of this invention, (a) A figure is a plane (back surface) explanatory drawing, (b) A figure is front explanatory drawing of (a) figure. 本発明の実施例で用いる高力ボルトの構造例を示す側面説明図。Side surface explanatory drawing which shows the structural example of the high strength volt | bolt used in the Example of this invention. 図２のボルト把持具に高力ボルトを嵌合した状態を示す側面説明図。Side surface explanatory drawing which shows the state which fitted the high strength volt | bolt to the volt | bolt holding tool of FIG. 本発明の実施例で、図１の（ｂ）図の状態で、可撓ケーブルの先端部に、高力ボルトを把持したボルト把持具を連結した状態を示す側面説明図。Side surface explanatory drawing which shows the state which connected the bolt holding tool which hold | gripped the high strength bolt to the front-end | tip part of the flexible cable in the Example of this invention in the state of the (b) figure of FIG. 図５の状態で、可撓ケーブルを引き戻して可撓ケーブルをボルト把持具から外した状態を示す側面説明図。Side surface explanatory drawing which shows the state which pulled back the flexible cable and removed the flexible cable from the bolt holding tool in the state of FIG. （ａ）図の状態から、ボルト把持具を軸回りに回動させて、高力ボルトをボルト孔と直角方向で水平にした状態を示す側面説明図。(A) Side explanatory drawing which shows the state which rotated the bolt holding | gripping tool around the axis | shaft from the state of a figure, and made the high strength bolt level with the bolt hole at a right angle direction. （ｂ）図の状態から、さらにボルト把持具を軸回りに回動させて、高力ボルトをボルト孔と直角方向で概ね逆倒立させた状態を示す側面説明図。(B) Side explanatory drawing which shows the state which further rotated the bolt holding | gripping tool around the axis | shaft from the state of a figure, and reversed the high strength bolt in the direction perpendicular to a bolt hole substantially. （ｃ）図の状態から、高力ボルトをボルト孔と平行にして挿入可能にした状態を示す側面説明図。(C) Side explanatory drawing which shows the state which made it possible to insert a high strength bolt in parallel with a bolt hole from the state of a figure. （ｄ）図の状態から、ボルト把持具を引き出し、高力ボルトに締結ナットを螺合して仮締めした状態を示す側面説明図。(D) Side explanatory drawing which shows the state which pulled out the bolt holding tool from the state of a figure, screwed the fastening nut to the high strength bolt, and was temporarily tightened. 図６（ｅ）で締結ナットを仮締めした状態から高力ボルトからボルト把持具を外してから、仮締めした締結ナットを本締めして、箱形断面柱と上部スプリットティの高力ボルト接合を終了した状態を示す側面説明図。After the fastening nut is temporarily tightened in FIG. 6 (e), the bolt gripper is removed from the high-strength bolt, and then the temporarily tightened fastening nut is fully tightened to join the box-shaped column and the upper split tee with the high-strength bolt. Side surface explanatory drawing which shows the state which complete | finished. （ａ）図は、従来のスプリットティと高力ボルトを用いた角形鋼管柱と梁の接合構造例を示す立体説明図、（ｂ）図は、（ａ）図のＡａ−Ａｂ矢視断面説明図。(A) The figure is a three-dimensional explanatory view showing an example of a joining structure of a square steel pipe column and a beam using a conventional split tee and a high-strength bolt. Figure.

符号の説明Explanation of symbols

１ 箱形断面柱（角形鋼管柱）
１ｏ ボルト孔
２ａ 上部スプリットティ
２ｂ 下部スプリットティ
２ｏ ボルト孔
３ 高力ボルト
３ｔ ボルト頭部
３ｓ 雄ねじ
３ｐ ピンテール
３ｎ ノッチ
４ Ｈ形断面梁（Ｈ形鋼梁）
５ 高力ボルト
６ 締結ナット
７ ボルト挿入治具
８ 可撓ケーブル
８ｃ 連結部
９ 先端方向変更機構
１０ レバー
１１ ボルト挿入孔
１２ ボルト把持具
１３ 把持連結部
１４ 連結ピン
１５ ボルト把持部キャップ
１６ ストッパー
１７、１８ スリット
１９ 工業用内視鏡 1 Box-shaped cross-section column (square steel pipe column)
1o Bolt hole 2a Upper split tee 2b Lower split tee 2o Bolt hole 3 High-strength bolt 3t Bolt head 3s Male thread 3p Pin tail 3n Notch 4 H-shaped cross-section beam (H-shaped steel beam)
DESCRIPTION OF SYMBOLS 5 High-strength bolt 6 Fastening nut 7 Bolt insertion jig 8 Flexible cable 8c Connection part 9 Tip direction change mechanism 10 Lever 11 Bolt insertion hole 12 Bolt holding tool 13 Holding connection part 14 Connection pin 15 Bolt holding part cap 16 Stopper 17, 18 Slit 19 Industrial Endoscope

Claims (3)

箱形断面材に接合金物を当接してボルト接合する際に、箱形断面材の接合部近くにボルト頭部径より大きいボルト挿入孔を明けておき、この箱形断面材に当接した接合金物の外部側からボルト孔に、先端部にボルト把持具との連結部を有する可撓ケーブルを挿入し、この可撓ケーブルの先端部を箱形断面柱の内部経由で上記ボルト挿入孔から外部に突出させて、ボルトを把持したボルト把持具を着脱自在に連結して引き戻し、ボルト把持具を箱形断面柱の内部からボルト孔経由で接合金物の外部に引き出し、可撓ケーブルの先端部に連結するボルト把持具として、可撓ケーブルの先端部の連結部に連結する把持連結部と、この把持連結部に連結ピンを介して回動可能に連結したボルト把持キャップによりなるものであり、この連結部には回転範囲を規定するストッパーがあり、把持連結部と把持キャップが真直ぐの状態から一方向にのみ角度（α）９０度回動可能に連結していることを特徴とする箱形断面材と接合金物とのボルト接合方法。 When a joint is brought into contact with a box-shaped cross-section material and a bolt is joined, a bolt insertion hole larger than the bolt head diameter is made near the joint of the box-shaped cross-section material, and the joint is in contact with the box-shaped cross-section material. Insert a flexible cable having a connecting portion with a bolt gripper at the tip from the outside of the metal fitting into the bolt hole, and connect the tip of this flexible cable to the outside from the bolt insertion hole via the inside of the box-shaped cross-section column. The bolt gripper that grips the bolt is detachably connected and pulled back, and the bolt gripper is pulled out from the inside of the box-shaped cross-sectional column to the outside of the joint hardware through the bolt hole, to the tip of the flexible cable. As a bolt gripping tool to be connected, a grip connecting portion connected to the connecting portion of the distal end portion of the flexible cable, and a bolt gripping cap connected to the grip connecting portion via a connecting pin so as to be rotatable, Rotating at connecting part There is a stopper for defining the circumference, the grip connecting part and the grip cap is linked to only the angle (alpha) 90 ° rotation in one direction from the straight state and a box-shaped cross-section member, wherein the bonding hardware Bolt joining method. 先端部にボルト把持具を連結可能な可撓ケーブルと、この可撓ケーブルの先端方向変更機構と、可撓ケーブルに着脱自在に連結可能なボルト把持具とを備え、可撓ケーブルに着脱自在に連結可能なボルト把持具が、連結把持部と、この連結把持部に連結したボルト把持キャップからなり、可撓ケーブルの先端部の連結部に連結する把持連結部と、この把持連結部に連結ピンを介して回動可能に連結したボルト把持キャップによりなるものであり、この連結部には回転範囲を規定するストッパーがあり、把持連結部と把持キャップが真直ぐの状態から一方向にのみ角度（α）９０度回動可能に連結していることを特徴とする箱形断面材へのボルト挿入治具。 A flexible cable that can connect a bolt gripping tool to the tip, a tip direction changing mechanism of the flexible cable, and a bolt gripping tool that can be detachably connected to the flexible cable. A connectable bolt gripper comprises a connection gripping part and a bolt gripping cap connected to the connection gripping part, a gripping connection part connected to the connection part of the distal end of the flexible cable, and a connection pin to the gripping connection part The connecting portion is provided with a stopper for defining a rotation range, and the connecting portion and the holding cap are angled only in one direction (α ) bolt insertion jig into box-shaped cross-section member, characterized in that they are linked to 90 degrees rotation. 内視鏡を装着して、その挿入チューブを可撓ケーブルに内蔵させ、箱形断面材のボルト挿入孔の位置を確認可能にしたことを特徴とする請求項２に記載の箱形断面材へのボルト挿入治具。 The box-shaped cross-section material according to claim 2 , wherein an endoscope is attached and the insertion tube is built in the flexible cable so that the position of the bolt insertion hole of the box-shaped cross-section material can be confirmed. Bolt insertion jig.
JP2003360353A 2003-10-21 2003-10-21 Bolt joining method for box-shaped cross-section material and metal fitting and bolt insertion jig for box-shaped cross-section material Expired - Fee Related JP4177741B2 (en)

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