JP2017020540A - Bolt joint method for steel material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bolt joint method for steel material enabling steel materials to be connected by a bolt without using any one side bolt even if a substantial restriction occurs in a working space.SOLUTION: A bolt 11 is inserted from a non-steel connecting surface 4b of one steel member 4 into a bolt insertion hole 4c and the bolt 11 is fixed to one steel member 4 in advance, Under a state in which a fixing part 10 is attached for fixing to a non-steel member connecting surface 4b of the one steel member 4 and the fixing part 10 is attached to the non-steel member connecting surface 4b, a bolt pressing jig 6 provided with a bolt head pressing part 9 arranged on an extended line of an axis line O1 of the pre-fixed bolt 11 is attached to the non-steel connecting surface 4b of the one steel member 4. The other steel member 3 is mounted to overlap on a steel material connecting surface 4a of the one steel member 4 while a shank part 11b of a bolt 11 protruded at a side of a steel member connecting surface 4a of the one steel member 4 is being inserted into a bolt insertion hole 3b and then a nut 14 is fastened to a shank part 11b of the bolt 11.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a method for joining steel bolts.

  At present, H-shaped steel is frequently used as a member constituting a steel column. On the other hand, since H-shaped steel did not spread mainly from 1955 to 1940s, for example, four angle members are arranged at the corners, and adjacent angle members are connected by lattices to assemble steel columns (assembled) (Steel column).

  When such an assembled steel column is subjected to seismic reinforcement, a method is often used in which reinforcing steel plates are joined to adjacent angle members and the reinforcing steel plates are integrally attached to the four surfaces of the steel column.

  Conventionally, as a means for joining reinforcing steel plates to angle members (means for joining steel materials), well-known high-strength bolts or driving rods are used (for example, Patent Document 1, Patent Document 2, (See Patent Document 3).

JP 2003-82759 A JP 2007-32159 A JP 2007-133201 A

Here, in the case where the reinforcing steel plate is attached to the assembled steel column made of an angle member and a lattice as described above, when the last steel plate is attached, the three steel plates attached in advance are attached. As a result, the work space inside the pillar cannot be secured. In some cases, the work space cannot be secured due to interference from walls and roofs.
Thereby, when attaching the last steel plate, it has to work from the outer side of a pillar, and after inserting a steel plate in a predetermined position, a bolt cannot be penetrated and nut-tightened. And when joining a steel plate in the state where big restrictions occurred in the work space, such as when joining the last one steel plate, from one side (joint surface side of the angle material) So-called one-side bolts that can join steel plates only by work are often used.

  However, when the one-side bolt is used, the operation can be facilitated by being limited to the operation from one side, but the cost is increased.

  In view of the above circumstances, the present invention provides a bolting method for steel materials that enables the steel materials to be bolted together without using one-side bolts even in a state where a large restriction is imposed on the work space. Objective.

  In order to achieve the above object, the present invention provides the following means.

  The bolt joining method for steel materials of the present invention is a method for bolting steel materials to each other by inserting bolts into bolt insertion holes from the non-steel material joining surface side opposite to the steel material joining surface of one steel material. A bolt disposing step for attaching a bolt in advance, a mounting portion for attaching and fixing the non-steel joint surface of the one steel material, and the mounting portion attached in advance to the non-steel joint surface A bolt holding jig provided with a bolt head holding portion disposed on an extension line of the bolt axis is attached to the non-steel joint surface of the one steel material, and the bolt is pulled out from the bolt insertion hole. A bolt holding jig mounting step for preventing, and a shaft portion of the bolt protruding to the steel material joining surface side of the one steel material is inserted into a bolt insertion hole, and the other steel material is overlaid on the steel material joining surface of the one steel material. Connection to install And a steel installation process, characterized in that it comprises a nut fastening step for fastening the nut to the shaft portion of the bolt protruding from the bolt insertion hole of the other steel.

  In the bolt joining method of the steel material of the present invention, the bolt is inserted in advance into the bolt insertion hole and attached to one steel material which is the steel material to be joined, and a non-steel material joining surface of one steel material is attached with, for example, a magnet or an adhesive. By using the attaching portion and attaching the bolt holding jig at a predetermined position, the bolt head holding portion of the bolt holding jig can be disposed on the extension line of the axis of the bolt attached in advance. Thereby, it can prevent that the volt | bolt previously attached by the volt | bolt head press part pulls out from the volt | bolt insertion hole of one steel material, and falls.

  And in the state which prevented the drop-off of the bolt in this way, the other steel material which is the joining steel material is overlapped and installed on the steel material joining surface of the one steel material while inserting the shaft portion of the bolt into the bolt insertion hole. By fastening a nut to the part, the other steel material can be bolted to one steel material.

  Therefore, according to the bolt joining method of the steel material of the present invention, by using the bolt holding jig, it is possible to bolt the other steel material to one steel material by work from the steel material joining surface side of one steel material, Even in a state where a large restriction is imposed on the work space, it becomes possible to bolt steel materials without using one-side bolts.

It is a figure which shows the condition which attaches the reinforcing steel plate to each surface of the assembly steel column which consists of an angle material and a lattice. It is a figure which shows the condition which attaches the reinforcing steel plate to each surface of the assembly steel column which consists of an angle material and a lattice. It is a perspective view which shows the bolt holding jig used with the bolt joining method of the steel materials which concern on one Embodiment of this invention. It is a front view of the bolt holding jig used with the bolt joining method of the steel materials concerning one embodiment of the present invention. It is a top view of the bolt holding jig used with the bolt joining method of the steel materials concerning one embodiment of the present invention. It is a figure which shows the state which bolted steel materials with the bolting method of the steel materials which concerns on one Embodiment of this invention.

  Hereinafter, with reference to FIG. 1 to FIG. 6, a steel material bolting method according to an embodiment of the present invention will be described.

  Here, in the present embodiment, for example, as shown in FIGS. 1 and 2, four angle members 4 are arranged at the corners, and adjacent angle members 4 are connected by a lattice (not shown). When the reinforcing steel plate 3 is bolted to the adjacent angle members 4 and attached to the four surfaces of the steel column 1 and the steel plate 3 (3a) on the last surface is attached (see FIG. 1), The present invention relates to a bolt joining method suitable for use when a work space cannot be secured, such as when there is an obstacle 5 such as a wall or a roof (see FIG. 2).

  That is, in this embodiment, when the steel members of the angle member (one steel member) 4 that is the steel member to be joined and the reinforcing steel plate (the other steel member) 3 that is the joint steel member are joined to each other, the working space is greatly restricted. The present invention relates to a method that enables joining using a general high-strength bolt (bolt) without using a one-side bolt even in a state.

  Moreover, in the bolt joining method of steel materials of this embodiment, in order to join the steel materials of the angle material 4 and the reinforcing steel plate 3 in a state where a working space cannot be secured, a bolt holding jig as shown in FIGS. 6 is used.

  The bolt holding jig 6 is formed by bending, for example, a metal rectangular flat plate, and a pair of side portions 7 and one end portions of the pair of side portions 7 arranged in parallel at a predetermined interval are connected to each other. A substantially U-shaped bolt head pressing portion 9 composed of a contact portion 8 to be connected and the other end of each side portion 7 of the bolt head pressing portion 9 are extended outward in the width direction perpendicular to each side portion 7. The pair of mounting portions 10 are formed in a substantially Ω shape.

  As shown in FIG. 6 (and FIGS. 1 and 2), when the reinforcing steel plate 3 (3a) is joined to the angle material 4 by the steel material bolt joining method of the present embodiment, first, the angle material 4 is used. The high strength bolt 11 is inserted into the bolt insertion hole 4c from the non-steel material bonding surface 4b side opposite to the steel material bonding surface 4a, and the high strength bolt 11 is attached to the angle member 4 in advance (bolt arrangement process).

Next, the attachment part 10 is attached to the non-steel material joining surface 4b of the angle member 4, and the bolt pressing jig 6 is attached. At this time, in this embodiment, as shown in FIGS. 3 and 6, the magnet 12 is attached to the attachment portion 10, and the attachment portion 10 is fixed to the non-steel joint surface 4 b of the angle member 4 by the magnetic force of the magnet 12 (bolt Presser jig installation process).
It should be noted that an adhesive is applied to the attachment portion 10 and the attachment portion 10 is adhered to the non-steel joint surface 4b, or a double-sided tape is applied to the attachment portion 10 and the release paper is peeled off and attached to the non-steel joint surface 4b. In particular, it is not necessary to limit the means for attaching the mounting portion 10 to the non-steel joint surface 4b.

Further, the bolt holding jig 6 accommodates a head (head) 11 a of a high strength bolt 11 attached in advance in a space surrounded by the pair of side parts 7 of the bolt head holding part 9 and the contact part 8. Install so that.
As a result, the abutting portion 8 of the bolt head pressing portion 9 is arranged on the extension line of the axis O1 of the high strength bolt 11 attached in advance with the bolt pressing jig 6 installed on the non-steel joint surface 4b of the angle member 4. The high-strength bolt 11 is prevented from being pulled out and dropped out from the bolt insertion hole 4c of the angle member 4 when the head 11a hits the abutting portion 8 of the bolt head pressing portion 9.

  Next, the reinforcing steel plate 3 is installed so as to overlap the steel material joint surface 4a of the angle member 4 while inserting the shaft portion 11b of the high strength bolt 11 protruding to the steel material joint surface 4a side of the angle member 4 into the bolt insertion hole 3b. (Bonding steel material installation process). At this time, in this embodiment, the filler plate 13 is attached prior to the reinforcing steel plate 3, and the filler plate 13 is interposed between the angle member 4 and the reinforcing steel plate 3.

  Then, the nut 14 is fastened to the shaft portion 11b of the high-strength bolt 11 protruding from the bolt insertion hole 3b of the reinforcing steel plate 3 (nut fastening process).

  Therefore, in the bolt joining method of the steel material of the present embodiment, the high strength bolt 11 is inserted into the bolt material insertion hole 4c in advance and attached to the angle material (one steel material) 4 which is the steel material to be joined. A bolt is placed on the extension line of the axis O1 of the high-strength bolt 11 attached in advance by attaching the mounting portion 10 to the steel joint surface 4b using a magnet 12 or an adhesive and installing the bolt pressing jig 6 at a predetermined position. The bolt head pressing portion 9 of the pressing jig 6 can be provided. Thereby, it is possible to prevent the high-strength bolt 11 attached in advance by the bolt head pressing portion 9 from being pulled out from the bolt insertion hole 4c of the angle member 4 and falling off.

  Further, in the state in which the high strength bolt 11 is prevented from falling off, the reinforcing steel plate (the other steel material) 3 which is a joining steel material is inserted into the angle material while the shaft portion 11b of the high strength bolt 11 is inserted into the bolt insertion hole 3b. 4, the reinforcing steel plate 3 can be bolted to the angle member 4 by placing the nut 14 on the shaft portion 11 b of the high strength bolt 11.

  Therefore, according to the steel material bolt joining method of the present embodiment, the reinforcing steel plate 3 is bolted to the angle material 4 by the work from the steel material joining surface 4a side of the angle material 4 by using the bolt holding jig 6. It is possible to bolt the steel materials 3 and 4 without using one-side bolts even when the work space is greatly restricted.

  As mentioned above, although one Embodiment of the bolting method of the steel material which concerns on this invention was described, this invention is not limited to said one Embodiment, In the range which does not deviate from the meaning, it can change suitably.

  For example, in the present embodiment, the reinforcing steel plate 3 is bolted to the angle member 4 in order to reinforce the assembled steel column. However, the steel bolt connecting method of the present invention is bolted to other steel members. Of course, it does not matter if it is applied. Even in this case, it is possible to obtain the same effect as that of the present embodiment.

1 Assembled steel column 3 Reinforcing steel plate (the other steel, bonded steel)
3a Steel plate for reinforcement (the other steel material, bonding steel material)
3b Bolt insertion hole 4 Angle material (One steel material, Steel material to be joined)
4a Steel material joint surface 4b Non-steel material joint surface 4c Bolt insertion hole 5 Obstacle 6 Bolt presser jig 7 Side 8 Contact part 9 Bolt presser part 10 Mounting part 11 High strength bolt (bolt)
11a head
11b Shaft part 12 Magnet 13 Filler plate 14 Nut O1 Bolt axis

Claims (1)

It is a method of bolting steel materials,
A bolt disposing step of inserting a bolt into a bolt insertion hole from a non-steel joint surface side opposite to the steel joint surface of one steel material and attaching the bolt to the one steel material in advance;
An attachment portion for attaching and fixing to the non-steel joint surface of the one steel material, and the extension portion of the axis of the bolt attached in advance with the attachment portion attached to the non-steel joint surface. A bolt holding jig mounting step for attaching a bolt holding jig provided with a bolt head holding part to the non-steel joint surface of the one steel material to prevent the bolt from being pulled out from the bolt insertion hole;
A joining steel material installation step of installing the other steel material on the steel material joining surface of the one steel material while inserting the shaft portion of the bolt protruding to the steel material joining surface side of the one steel material into the bolt insertion hole;
And a nut fastening step of fastening a nut to a shaft portion of the bolt protruding from the bolt insertion hole of the other steel material.

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