JP2003074126A - High strength bolt connecting structure of h-shaped sectional member having friction damper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high strength bolt friction connecting structure of an H-shaped sectional members equipped with a friction damper having an energy absorbing function capable of having strength enabling a damper to correspond with a wide range from small and medium-scaled earthquakes to a large-scaled earthquake in spite of the small-scaled and the low priced damper. SOLUTION: For the high strength bolt friction connecting structure of the H-shaped sectional members connected with the high strength bolt through up and down splice plates arranged so as to butt at H-shaped sectional members opposed to each other intended for connection and abutted by laying across a flange of the H-shaped sectional members opposed to each other, a bolt hole in the splice plate on the side of at least one of the H-shaped sectional members is used for a slot hole, a friction plate is abutted on the outside of the splice plate to connect the friction plate, the splice plate and the flange of the H- shaped sectional members with high strength bolts, and energy acting on a connecting section can be absorbed by sliding friction force between the splice plate and the friction plate and between the splice plate and the flange of the H-shaped sectional members.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an H-section column or a box-section column and an H-section column when constructing a steel structure building, for example.
The present invention relates to a high-strength bolt friction welding structure applied to a high-strength bolt friction welding structure of a beam having a cross-section or a high-strength bolt friction welding structure of an H-shaped beam and an H-shaped beam.

[0002]

2. Description of the Related Art In recent years, a bidirectional rigid frame structure using a box-shaped cross-section column and an H-shaped cross-section beam has been widely used, and a joining structure is a through diaphragm type joining as shown in FIGS. 9 (a) to 9 (c). The structure is used. In this type of joining structure, the box-shaped cross-section pillar 1, the upper and lower diaphragms 2a and 2b and the column core 2c, and the diaphragm 2 and the beam attachment portion 3 are joined by welding w, and the beam attachment portion 3 and the H-shaped cross section. Beam 4
Between the flanges 3a, 3b and 4a, 4b via the outer and inner attachment plates 5a, 5b, 5c, and between the webs 3u, 4u via the pair of left and right attachment plates 6a, 6b. , Which were respectively joined by high-strength bolts 7.

Recently, as shown in FIGS. 10 (a) to 10 (c), the upper and lower flanges 8f of a pair of upper and lower split tees 8a, 8b are mounted on the box-shaped column 1 without using a diaphragm or a beam mounting portion. Joining structure for reducing welding load by joining with the high-strength bolt 10 by joining with the force bolt 9 and joining the upper and lower flanges 4a, 4b of the H-shaped cross-section beam 4 to the horizontal web 8u of the pair of upper and lower split tees 8a, 8b. Is being adopted.

In such a joint structure, it has been attempted to use a friction damper having an energy absorbing function in order to secure a proof stress that can cope with a wide range from a small-scale earthquake to a large earthquake. The friction damper is
A hysteretic damping damper showing the hysteretic characteristics of rigid-plastic deformation,
The load deformation curve draws a loop to try to damp the vibration, and the area of the hysteresis loop corresponds to the energy absorbed during one cycle. As an example of such a friction damper, the friction plate material and the sliding plate material are clamped by high-strength bolts, and the damper function is exerted by the frictional force generated between the two plates, which is relatively inexpensive to manufacture and maintenance and inspection. A simple friction welding type energy absorption structure is known.

This friction welding type energy absorbing structure is disclosed in, for example, Japanese Patent Laid-Open No. 11-190147.
The friction plate is composed of two friction plates and one sliding plate material sandwiched between them, and the friction plate is a plate material that is joined to one joint member by high-strength bolts and cannot be relatively displaced. It has a bolt hole. On the other hand, the sliding plate has a normal bolt hole on the other joining member side and is joined by a normal high-strength bolt.When the high-strength bolt is inserted on the one joining member side, It has a slot hole (bolt hole) extending in the longitudinal direction so as to be displaceable.

When a tensile force is applied to this friction-bonding type energy absorbing structure and the frictional force generated between the friction plate and the sliding plate is exceeded, the sliding plate has the shaft portion of the high-strength bolt in one wall of the slot hole. You can move until you hit. Further, when a compressive force is applied, the shaft portion of the high-strength bolt can move until it abuts the other wall of the slot hole. Therefore, when the tensile force and the compressive force act on the sliding plate exceeding the frictional force between the sliding plate and the sliding plate, the sliding plate expands and contracts by maximizing the length obtained by subtracting the shaft diameter of the high-strength bolt from the length of the slot hole. Since it is possible, there is an advantage that it is possible to absorb energy from a small earthquake to a large earthquake depending on the dimension selection of the slot hole.

Such a friction welding type energy absorbing structure is, for example, a high-strength bolt friction joining structure of a box-shaped cross-section column and an H-shaped cross-section beam, or a high-strength bolt of an H-shaped cross-section material and an H-shaped cross-section material. Although it can be applied to a friction welding structure, in order to secure the necessary strength of the welding structure, it is necessary to increase the friction surface, which necessitates an increase in the number of friction plates and sliding plates, which complicates the welding structure and reduces the construction load. In addition to the increase, there is a problem that the material cost increases.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and is a high-strength bolt friction joining structure of H-shaped cross-section members to be joined, a box-shaped cross-section column and an H-shaped cross-section beam. In the high-strength bolt friction joint structure of, the large friction surface can be secured even if the friction plate material and the sliding plate material are reduced, which makes it possible to deal with a wide range from small and medium-sized earthquakes to large earthquakes, despite being a small and inexpensive damper. Provided is a high-strength bolt friction joint structure of an H-shaped cross-section member or box-shaped cross-section column and an H-shaped cross-section beam, which is provided with a friction damper having an energy absorbing function capable of providing a possible yield strength.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention is summarized as the following (1) to (6). (1) H-shape which is arranged so that opposing H-shaped cross-section members to be joined face each other, and high-strength bolts are joined through upper and lower attachment plates that are in contact with each other across the flanges of the opposing H-shaped cross-section members. In a high-strength bolt friction welding structure for cross-section materials, at least one of the H-shaped cross-section material side addition plate bolt holes is used as a slot hole, and the friction plate material is brought into contact with the outer surface of the addition plate to form the friction plate and the addition plate. It is characterized in that the flange of the H-shaped cross-section material is joined by high-strength bolts so that the energy acting on the joint is absorbed by the sliding friction force between the addition plate and the friction plate and between the addition plate and the flange of the H-shaped cross-section material. High-strength bolt joint structure with H-shaped cross-section material that has a friction damper. (2) In (1), the webs of opposing H-shaped cross-section members to be joined are arranged so as to abut against each other, and a pair of left and right attachment plates abutting across the webs of the opposing H-shaped cross-section members are interposed. In the high-strength bolt friction joint structure for H-shaped cross-section members to be joined by high-strength bolts, at least one H-shaped cross-section member side addition plate bolt hole is used as a slot hole, and the friction plate is brought into contact with the outer surface of the addition plate. Then, the friction plate, the addition plate, and the web of the H-shaped cross-section material are bonded by high-strength bolts, and the energy acting on the joint is absorbed by the sliding frictional force between the addition plate and the friction plate and the web of the addition plate and the H-shaped cross-section material. A high-strength bolt joint structure of an H-shaped cross-section material having a friction damper.

(3) High-strength bolt friction joining structure of a box-shaped column and an H-shaped beam, in which a box-shaped column and an H-shaped beam are joined by high-strength bolts through a split tee joined to the box-shaped column At the tip of the horizontal web of the split tee,
Arrange so that the end of the flange of the beam with a shaped cross section abuts,
While straddling the inside of the horizontal web of the split tee and the inside of the flange of the H-section beam, the horizontal plate of the joint angle abuts, and the outside of the horizontal web of the split tee and the outside of the flange of the H-section beam. Is attached to the horizontal plate of the joint angle so as to face the horizontal plate of the joint angle, and at least the bolt holes of the horizontal plate of the joint angle and the bolt holes of the horizontal plate of the joint angle are used as slot holes. The friction plate is brought into contact with the outer side of the plate and the horizontal plate of the joint angle, and the friction plate and the addition plate, the horizontal plate of the joint angle and the flange of the H-shaped cross-section material are joined by high-strength bolts, and the addition plate, the friction plate, and the addition plate. And the horizontal plate of the joint angle and the friction plate, the flange of the H-shaped section material, and the sliding friction force between the horizontal plate of the joint angle and the flange of the H-shaped section member act on the joint. High-strength bolted connection structure of H-section member having a friction damper which is characterized in that so as to absorb the Energy.

(4) In the high-strength bolted structure of the box-shaped column and the H-shaped beam, in which the box-shaped column and the H-shaped beam are joined by high-strength bolts through the split tee, the tip of the vertical web of the split tee is joined. , The joint angle of the flange of the H-shaped cross-section is arranged so that the tip of the beam hits at a right angle, and the vertical web of the split tee and the flange of the H-shaped cross-section are arranged to face each other vertically and horizontally. This is a high strength bolt joint of the vertical plate of the above to the vertical web of the split tee, and a high strength bolt joint of the flange of the H-section beam between the horizontal plates of the joint angles facing each other vertically. The bolt holes of the horizontal plate of the joint angle on the side are used as slot holes, and the friction plate is brought into contact with the outer side of the horizontal plate of this joint angle to join the friction plate and the joint. High-strength bolt connection between the horizontal plate of the angle and the flange of the H-shaped beam, so that the energy acting on the joint is absorbed by the sliding friction force between the friction plate and the flange of the horizontal plate of the angle and the H-shaped beam. A high-strength bolt friction joint structure of a box-shaped column having a friction damper and an H-shaped beam, which is characterized in that

(5) In the high-strength bolted structure of the box-shaped column and the H-shaped beam, in which the box-shaped column and the H-shaped beam are joined by high-strength bolts through the split tee, the tip of the vertical web of the split tee. , The joint angle of the flange of the H-shaped cross-section is arranged so that the tip of the beam hits at a right angle, and the vertical web of the split tee and the flange of the H-shaped cross-section are arranged to face each other vertically and horizontally. Is a high strength bolt joint of a vertical plate of a split tee to a vertical web of a split tee, and a high strength bolt joint of a flange of an H-shaped cross section beam between horizontal plates of joint angles facing each other vertically. Side hole of the vertical plate of the joint angle as a slot hole. The vertical plate of the joint angle and the vertical web of the split tee are joined by high-strength bolts, and the energy acting on the joint is absorbed by the sliding frictional force between the friction plate and the vertical plate of the joint angle and the vertical web of the split tee. A high-strength bolt friction joint structure of a box-shaped cross-section column and a H-shaped cross-section beam having a friction damper. (6) In any one of (1) to (5), the friction plate is a friction additional washer and is abutted on the outer side of an addition plate having a slot hole. High-strength bolt friction welding structure of H-shaped section material or box-shaped column and H-shaped section beam.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, for example, an H-shaped cross-section member or a split tee mounted on a box-shaped cross-section column is arranged such that a beam having an H-shaped cross-section is butted against the H-shaped cross-section member or split tee. When the high-strength bolts are friction-bonded to the H-shaped cross-section beams through the addition plates or joint angles that are abutted across the H-shaped cross-section beams, or the H-shaped cross-section material and the H-shaped cross-section material are added or It is mainly applied in the case of high-strength bolt friction joining via a joint angle with a joint plate, and the bolt holes of the add-on plate and the joint angle are used as slot holes, and the friction plate is provided outside the add-on plate and the joint angle. Abutting against each other and fastening the H-shaped cross-section material with the addition plate or the joint angle and the friction plate with high-strength bolts, sliding friction is generated between the H-shaped cross-section material and the addition plate or the joint angle and the friction plate. H-shaped cross-section material or box-shaped cross-section that has a hysteresis damping friction damper and has an energy absorption function by frictional force against a wide range of loads from small and medium-sized earthquakes to large earthquakes Pillar and H
It is a high-strength bolt friction joint structure with a beam having a section.

The joint angle referred to in the present invention is composed of a vertical plate and a horizontal plate and has a mountain-shaped cross section. There are the following four basic types. (1) A bolt having a bolt hole in a vertical plate on the side abutting on one member, and a bolt hole on a horizontal plate on the side abutting the other member. (2) The horizontal plate has bolt holes both on the side in contact with one member and on the side in contact with the other member. (3) One having a bolt hole in the horizontal plate and the other having a bolt hole in the vertical plate both on the side contacting the other member and on the side contacting the other member. (4) The horizontal plate has bolt holes both on the side which contacts one member and the side which contacts the other member, and has bolt holes on only one of the vertical plates.

Since the high-strength bolt friction joint structure of the present invention is equipped with a hysteresis damping type friction damper, the load deformation curve draws a loop to damp vibrations, and main vibrations of columns, beams, etc. The stress and deformation on the material can be reduced, and as a result, the relative proof stress of the joint structure can be improved. For example, when the attachment plate is used, the bolt hole of the attachment plate is a slot hole (here, it means a long hole in which the axial diameter of the H-shaped cross-section material is a long diameter. Hereinafter referred to as “slot hole”). Then, when a load is applied to the H-shaped cross-section material and slippage occurs over the maximum frictional force generated between the addition plate and the friction plate and between the addition plate and the H-shaped cross-section material, the shaft of the high-strength bolt is In the process in which the part moves within the slot hole for a certain distance, it is possible to stably transmit the stress close to the maximum frictional force at the joint part due to the sliding friction due to the addition of the friction plate.

In this type of high strength bolt friction welding,
In order to smoothly insert the high-strength bolt into each bolt hole, the bolt hole should be a perfect circle, and the hole diameter should be 2 times larger than the shaft diameter of the high-strength bolt.
Although it is set to be about 3 mm larger, in the present invention, the bolt holes of the friction plate and the bolt holes of the H-shaped cross-section member are provided on the assumption that the friction plate is brought into contact with the outside of the attachment plate and fastened with high-strength bolts. The bolt hole is made as small as possible in comparison with the conventional hole diameter so that the bolt can be inserted, and the bolt hole in the region where the friction plate of the addition plate comes into contact is made a slot hole. This slot hole is applied to the bolt holes of the attachment plate and the joint angle, but it is not a necessary condition to make all the bolt holes slot holes. For example, only one H-shaped cross-section material side may be slot holes. . In consideration of clarification of structural performance, processing cost, workability, etc., it is often advantageous to use only the bolt holes on one H-shaped cross-section material side as slot holes.

The major axis of the bolt hole which becomes the slot hole is preferably set to about 1.5 to 2.5 times the diameter of the high strength bolt. Long diameter is 1.5 mm of high strength bolt shaft diameter
If it is less than the above, the damping effect due to sliding friction is not sufficient. In addition, there is a limit to the damping effect due to sliding friction, and even if the major axis exceeds 2.5 times the shaft diameter of the high-strength bolt, it does not lead to an improvement in the yield strength of the joint structure as a whole, thus reducing the cross section and increasing the processing cost. Considering the above, it is not a good idea to make the diameter of the high strength bolt more than 2.5 times. However, this condition can be set in consideration of the strength of each member, the frictional force on each friction surface, the load, the target value of damping, and the like.

The friction plates that come into contact with the outside of the attachment plate or the joint angle are independently added to each high-strength bolt inserted through each slot hole of the attachment plate or the joint angle, and a friction additional washer (having a larger friction surface than a normal washer) is provided. It is more effective from the viewpoint of saving the material cost and efficiently securing the sliding friction, as described above. The shape of this friction plate is mainly square or circular. It is preferable to set the diameter of the bolt hole to be as small as possible within a range where the bolt can be inserted. It is disadvantageous to use a single friction plate for a plurality of high-strength bolts because it is very difficult in terms of bolt insertion in terms of construction and increases costs. As the high-strength bolt used in the present invention, a well-known high-strength bolt such as a torcia-type high-strength bolt or a high-strength hexagonal bolt having a torque control mechanism at the tip on the nut screwing side can be used. In order to control the slippage phenomenon at each joint surface, it is also effective to subject the joint surface to a high friction treatment that gives a slip coefficient of 0.6 or more.

[0019]

EXAMPLE 1 Example 1 of the present invention will be described below in detail with reference to FIGS. This Example 1 is
In the bidirectional rigid frame structure using the box-shaped cross-section column 1 and the H-shaped cross-section beam 4, a through-diaphragm type joining structure as shown in FIG. 9 is adopted as the joining structure, and the diaphragm 2 attached to the box-shaped cross-section column 1 is used. The upper and lower flanges 3a and 3b of the beam attachment portion 3 having an H-shaped cross section welded to each other and the upper and lower flanges 4a and 4b of the H-shaped cross section are respectively attached to the outer attachment plate 5
1 and the high-strength bolt connection through the inner attachment plates 52 and 53,
Web 3u of beam attachment part 3 and web 4u of H-shaped cross-section beam 4
Is applied as a high-strength bolt friction joint structure of a box-shaped cross-section column 1 and an H-shaped cross-section beam 4 which are joined by a high-strength bolt 7 via a pair of left and right attachment plates 61 and 62. Box-shaped cross-section pillar 1 and H
In the high-strength bolt friction-bonding structure of the beam section 4 with a cross section, one or more steps of the H-section beam 4 are attached to the 1 to 4 side surfaces of the box section column 1. A typical description will be made in the case where one (one step) H-shaped cross-section beam 4 is joined to one side surface by high-strength bolt friction welding.

1 to 3, 1 is a box-shaped cross-section column made of a box-shaped cross-section material, 2 is a through diaphragm attached to the box-shaped cross-section column by welding, and 3 is H welded so as to abut the through diaphragm 2. It is a beam mounting portion having a shaped cross section, and has upper and lower flanges 3a and 3b having bolt holes and a web 3u. The H-shaped cross-section beam 4 has upper and lower flanges 4a and 4b having bolt holes and a web 4u, and is arranged so that its tip end face abuts the tip end face of the beam attachment part 3 with a gap a therebetween. The upper and lower flanges 3a and 3b of the portion 3 and the upper and lower flanges 4a and 4b of the H-shaped cross-section beam 4 straddle the upper and lower flanges 3a and 3b of the beam attachment portion 3 and contact the attachment plate 51. H-shaped beam 4
Straddling the inside of the upper and lower flanges 4a, 4b of the
The attachment plates 52 and 53 are abutted so as to face each other. Further, attachment plates 61 and 62 are in contact with each other across both sides of the web 3u of the mounting portion 3 and both sides of the web 4u of the H-shaped cross-section beam 4.

The attachment plate 51 contacting the outside is a flat plate as shown in FIG. 4A, and the bolt hole through which the high-strength bolt 7 is inserted on the side of the beam mounting portion 3 is a normal bolt hole 5h. , The bolt hole through which the high-strength bolt 7 is inserted on the side of the H-shaped cross-section beam 4 is a slot hole 5z, and the slot hole 5z is provided outside the outer attachment plate 51 having the slot hole 5z.
The additional friction washer 12 that serves as a friction plate is in contact with the unit. Further, the attachment plates 52 and 53 that are in contact with the inside are shown in FIG.
It is a flat plate as shown in, and the high-strength bolt 7
The bolt hole for inserting is the normal bolt hole 5h, but H
The bolt hole through which the high-strength bolt 7 is inserted on the side of the shaped cross-section beam 4 is a slot hole 5z.
Friction extension washers 12, which serve as friction plates in contact with the slot holes 5z, are in contact with the outer side of the inner attachment plates 52 and 53 having z. Further, the attachment plates 61 and 6 which are in contact with each other across both sides of the web 3u of the beam attachment portion 3 and the web 4u of the H-shaped cross-section beam 4.
Reference numeral 2 is a flat plate as shown in FIG.
The bolt hole through which the high-strength bolt 7 is inserted is a normal bolt hole 6h, but the bolt hole through which the high-strength bolt 7 is inserted on the H-shaped cross-section beam 4 side is a slot hole 6 having a long diameter in the beam length direction.
The additional friction washer 12, which serves as a friction plate, is abutted on the outside of the attachment plates 61 and 62 having the slot holes 6z in units of the slot holes 6z. The friction extension washer 12 is a disc as shown in FIG. 4D, and has a bolt hole 12h at the center.

On the beam mounting portion 3 side, the upper and lower flanges 3a, 3
b and the attachment plates 52 and 53 that are in contact with the inside thereof and the attachment plate 51 that is in contact with the outside thereof are joined by two high-strength bolts 7, and on the H-shaped cross-section beam 4 side, the upper and lower flanges 4a and 4b. And an attachment plate 5 having a slot hole 5z abutting the inside thereof
2, 53 and the attachment plate 51 that is in contact with the outside and the additional friction washer 12
Are joined by a high-strength bolt 7. On the beam attachment portion 3 side, the web 3u and the attachment plates 61 and 62 that are in contact with both sides thereof are joined by three high-strength bolts 7. On the H-shaped cross-section beam 4 side, the web 4u and the both sides thereof are contacted. The additional plates 61 and 62 having the slot holes 6z in contact with each other and the friction extension washer 12 in contact with the outsides thereof are joined by three high-strength bolts 7.

In the high-strength bolt friction joint structure of the box-shaped cross-section column 1 and the H-shaped cross-section beam 4 of the first embodiment, the attachment plates 51, 5 are used.
2, 53, and the bolt holes on the side of the H-shaped cross-section beams of the addition plates 61 and 62 are set as the slot holes 5z and 6z, and a load acts on the H-shaped cross-section beam, and each addition plate, the friction additional washer 12, and each addition plate. And the shafts of the high-strength bolt 7 are slid against the maximum frictional force generated between the upper and lower flanges 4a and 4b of the H-shaped cross-section beam 4 and the web 4u, the slot holes 5z and 6z of the attachment plates. In the process of moving the inside by a certain distance, the stress close to the maximum frictional force can be stably transmitted at the joint portion due to the sliding friction due to the addition of the additional friction washer 12. As a result, it is possible to improve the proof stress of the main part such as the column-shaped cross-section column 1 and the H-shaped cross-section beam 4 as a whole.

[Second Embodiment] A second embodiment of the present invention will be described in detail below with reference to FIGS. This Example 2
Is a box-shaped cross-section column 1 and an H-shaped cross-section beam 4 with a split tee 8
The split tee 8 is attached to the box-shaped cross-section column 1 by adopting a joining structure in which high-strength bolts are joined via a and 8b.
The upper and lower flanges 4a, 4b of the H-shaped cross-section column 4 are arranged on the horizontal webs 8p of a, 8b so as to abut each other with a gap a, and the left and right attachment plates straddling both flanges and contacting the outside. 51a and 51b, and a horizontal plate f that straddles the left and right inner sides of both flanges and faces the attachment plates 51a and 51b.
a pair of left and right joint angles 13a and 13 abutting b
B, 13c and 13d are used to join with the high-strength bolt 7,
This is applied as a high-strength bolt friction joint structure of a box-shaped cross-section column 1 and an H-shaped cross-section beam 4. In the high-strength bolt friction joint structure of the box-shaped cross-section column 1 and the H-shaped cross-section beam 4, the box-shaped cross-section column 1
1 to a plurality of steps of the H-shaped cross-section beam 4 are attached to the 1 to 4 side surfaces of the box-shaped cross-section pillar 1. Here, one (one step) H-shaped cross-section beam 4 is attached to one side surface of the box-shaped cross-section column 1 with high strength. A typical description will be given in the case of bolt friction welding. In FIGS. 5A to 5C, reference numeral 1 is a box-shaped cross-section column made of a box-shaped cross-section member, and a pair of upper and lower split tees 8 a and 8 b are joined to the side surface thereof by a high-strength bolt 9. Joint angles 13a, 13b, 13c,
The vertical plate fa of 13d is a non-joint portion.

Attaching plates 51a and 51b that are in contact with the left and right outer sides
6A is a flat plate as shown in FIG. 6A, and the bolt holes through which the high-strength bolt 7 is inserted on the horizontal web 8p side of the split tees 8a and 8b are normal bolt holes 5h. The bolt holes through which the high-strength bolts 7 are inserted on the upper and lower flanges 4a and 4b side are slot holes 5z, and on the outer side thereof, friction additional washers 12 are provided in units of slot holes 5z.
Are abutted. In addition, the joint angle 13a ~
13d is a vertical plate f as shown in FIGS. 6 (b) and 6 (c).
The horizontal plate fb has a mountain-shaped cross section and is formed with a horizontal plate fb. The bolt holes of the horizontal plate fb through which the high-strength bolt 7 is inserted at the split tees 8a and 8b are normal bolt holes 13h.
The high-strength bolt 7 is attached to the upper and lower flanges 4a and 4b of the shaped cross-section beam 4.
The bolt hole through which is inserted is a slot hole 13z, and the friction extension washer 12 is abutted on the outer side thereof in units of the slot hole 5z.

Horizontal web 8 of split tees 8a, 8b
On the p side, the attachment plates 51a and 51b that are in contact with the outside of the p side,
Joint angles 13a and 13b that abut on the inside, 1
Horizontal plates fb of 3c and 13d are joined by two high-strength bolts 7 each, and upper and lower flanges 4 on the H-shaped cross-section beam 4 side.
On the a and 4b sides, the slot hole 5 that abuts on the outside
The outer addition plates 51a and 51b having z and the friction additional washers 12 that are in contact with the outer sides are joined by two high-strength bolts 7, respectively. The friction extension washer 12 is shown in FIG.
As shown in (d), it is a disk and has a normal bolt hole 12h at the center.

In the high-strength bolt friction joint structure of the box-shaped cross-section column 1 and the H-shaped cross-section beam 4 of the second embodiment, (1) outer attachment plates 51a, 51b and a pair of left and right joint angles 13a, 13b, 13c. And the bolt holes on the H-shaped cross-section beam 4 side of 13d are made into the slot holes 5z and 13z, and a load acts on the H-shaped cross-section beam 4, each addition plate, the friction additional washer 12, and the upper and lower flanges of the H-shaped cross-section beam 4. When slippage occurs due to friction force generated between 4a and 4b, the shaft portion 7s of the high-strength bolt 7 is inserted into the slot holes 5z and 13z of the attachment plates.
During the process of moving inside by a certain distance, especially the friction additional washer 12
By the addition of sliding friction, stress close to the maximum frictional force can be stably transmitted at the joint. As a result, it is possible to improve the proof stress of the main part such as the column-shaped cross-section column 1 and the H-shaped cross-section beam 4 as a whole.

(2) H is attached to the horizontal web 8p of the pair of split tees 8a and 8b which are joined to the box-shaped cross-section column 1 by high-strength bolts.
The cross-section beams 4 are arranged so as to abut each other, and are sandwiched by the horizontal plates fb of the joint plates 13a, 13b and 13c, 13d that abut on the outside and the joint angles 13a, 13b and 13c that abut on the inside. Since the high-strength bolts are joined to the 8a, 8b side and the H-shaped cross-section beam 4 side, for example, at the factory, the high-strength bolt joints of the upper and lower split tees 8a, 8b are completed on the box-shaped cross-section column 1 and transported to the building site. , When constructing the box-shaped cross-section pillar 1, the H-shaped cross-section beam 4 is connected to the joint angle 13
Since the position of the joint angle can be easily adjusted when the high-strength bolts are joined through a, 13b and 13c, 13d, the work of adjusting the position of the H-shaped cross-section beam can be stably performed, and the workability is improved. be able to.

[Third Embodiment] A third embodiment of the present invention will be described below with reference to FIGS. This Example 3
Adopts a joining structure in which the box-shaped cross-section column 1 and the H-shaped cross-section beam 4 are joined by high-strength bolts via the split tees 14a and 14b having the vertical webs 14u, and the split tee 14a attached to the box-shaped cross-section column 1 is adopted. , 14b vertical web 14
u and the upper and lower flanges 4a and 4b of the H-shaped cross-section beam 4 are arranged so as to be orthogonal to each other and abutted against each other.
Joint angles 13a, 13b, 13c, 13d, 13e, 13 abutted across the vertical webs 14u of a, 14b and the upper and lower flanges 4a, 4b of the H-shaped cross-section beam 4.
This is applied as a high-strength bolt friction joining structure of a box-shaped cross-section column 1 and an H-shaped cross-section beam 4 joined by a high-strength bolt 7 via f, 13g, and 13i. Normally, the H-shaped cross-section beam 4 is usually attached to 1 to 4 side surfaces of the box-shaped cross-section column 1, but here, one H-shaped cross-section beam 4 is attached to one side surface of the box-shaped cross-section column. The case will be described as a representative.

In FIGS. 7 (a) to 7 (c), 1 is a box-shaped cross-section column having a pair of upper and lower split tees 14a and 1 on its side surface.
4b are joined with a high-strength bolt 9 at a predetermined interval. The joint angles 13a to 13d are shown in FIG.
As shown in (a) and (b), the vertical plate fa and the horizontal plate fb
The vertical plate fa having the mountain-shaped cross section and having the high-strength bolt 7 on the upper split tee 14a side is a normal bolt hole 13h, but the high-strength bolt 7 on the H-shaped cross-section beam 4 side. The bolt hole of the horizontal plate fb through which is inserted is a slot hole 13z.
A pair of left and right joint angles 1 having 3z
Friction extension washers 12 are abutted on the outer sides of the horizontal plates fb of the pair of left and right joint angles 13c and 13d on the lower side 3a and 13b and the lower side.

The vertical web 14u of the upper split tee 14a includes a pair of left and right joint angles 1 on the upper side.
The vertical plates fa of 3a and 13b and the vertical plates fa of the pair of left and right joint angles 13c and 13d on the lower side are joined by one high-strength bolt 7. Further, on the side of the upper flange 4a on the side of the H-shaped cross-section beam 4, friction with the horizontal plate fb of the pair of left and right joint angles 13a and 13b on the upper side and the horizontal plate fb of the pair of left and right joint angles 13c and 13d on the lower side. The extension washers 12 are joined by one high strength bolt 7 each.

Joint angles 13e, 13f, 13
As shown in FIGS. 8A and 8B, g and 13i are vertical plates fa and horizontal plates fb and have a chevron cross section,
The vertical plate fa through which the high-strength bolt 7 is inserted on the lower split tee 14b side is a normal bolt hole 13h, but the horizontal plate through which the high-strength bolt 7 is inserted on the lower flange 4b side of the H-shaped cross-section beam 4 is formed. The bolt hole of fb is a slot hole 13
and a pair of left and right joint angles 13e and 13f on the upper side and a pair of left and right joint angles 13g and 1 on the lower side having the slot hole 13z.
The additional friction washer 12 is in contact with the outer side of the horizontal plate fb 3i in units of slot holes 13z.

The vertical web 14u of the lower split tee 14b has a pair of left and right joint angles 1 on the upper side.
Vertical plates fa of 3e and 13f and 13g and 13i are joined by one high-strength bolt 7. On the lower flange 4b side of the H-shaped cross-section beam 4, a pair of left and right joint angles 13e and 13f on the upper side, a pair of left and right joint angles 13g and 13i on the lower side, and a horizontal plate fb and a friction additional washer 12 are provided. It is joined by a high-strength bolt 7 of a book. As shown in FIG. 8D, the friction extension washer 12 is a disc and has a normal bolt hole 12h at the center thereof.

In the high-strength bolt friction joint structure of the box-shaped cross-section column 1 and the H-shaped cross-section beam 4 of the third embodiment, substantially the same effect as that of the second embodiment can be obtained. The present invention is not limited to the contents of the above embodiment. For example, the above-described embodiment is applied to the case where the column is a rectangular box-shaped cross-section column and the beam is an H-shaped cross-section beam, but also when the column is a circular cross-section column or an H-shaped cross-section column. The present invention can be applied, and the beam is usually attached not only on one side surface of the pillar but also on one to a plurality of upper and lower stages on two to four side surfaces. Also, between the H-shaped cross-section materials,
The same can be applied to the case where high-strength steel materials are butted against each other for high-strength bolt joining. Design conditions such as split tee shape, size, arrangement, fixing, joint angle, attachment plate, shape size and arrangement of friction-enhancing washer, normal bolt hole, slot hole forming area, hole shape, hole diameter, arrangement, etc. Regarding the conditions, high-strength bolt and nut / washer setting conditions, high friction treatment on the joint surface, construction procedure, etc., the range that satisfies the above claims depending on the object to be joined, the joining site, the material strength, the design strength, etc. It is something that has changed.

[0035]

According to the present invention, for example, the flange of the H-shaped cross-section beam is arranged so as to abut against the web of the split tee attached to the box-shaped cross-section column, and the H-shaped cross-section beam 4 is provided through the attachment plate and the joint angle. In the case of high-strength bolt connection, for example, the bolt hole on the H-shaped cross-section beam side is made into a slot hole, a load acts on the H-shaped cross-section beam 4, each addition plate, a friction additional washer, and a flange of the H-shaped cross-section beam. When slippage occurs due to the friction force generated between them, during the process in which the shaft portion of the high-strength bolt moves within the slot hole of each attachment plate for a certain distance, especially due to sliding friction due to the addition of a friction additional washer The stress close to the maximum frictional force can be stably transmitted at the joint. As a result, it is possible to prevent damage to the main material such as a box-shaped cross-section column and an H-shaped cross-section beam during an earthquake, etc., and improve the safety of the entire structure. Further, for example, in the case where the split tee attached to the box-shaped cross-section column is arranged so as to abut against the H-shaped cross-section beam, and high-strength bolt connection is performed through the joint angle and the attachment plate, the H-shaped cross-section column is used. When attaching the cross-section beam, the position of the joint angle and the attachment plate can be easily adjusted, and the restrictions at the time of the work of adjusting the position of the H-shaped cross-section beam are relaxed and the workability is improved.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional front explanatory view showing an example of a high-strength bolt joint structure of a box-shaped cross-section column and an H-shaped cross-section beam in Embodiment 1 of the present invention.

FIG. 2 is a partial cross-sectional side view illustration of FIG.

FIG. 3 is an explanatory plan view of FIG.

4A is a three-dimensional explanatory view of an attachment plate outside the flange in FIG. 1, FIG. 4B is a three-dimensional explanatory diagram of an attachment plate inside the flange, and FIG. 4C is a web-side attachment plate. Explanatory drawing of, (d)
The figure is a three-dimensional illustration of a friction additional washer.

FIG. 5 (a) is a partial sectional front view showing an example of a high-strength bolt joint structure of a box-shaped cross-section column and an H-shaped cross-section beam in Embodiment 2 of the present invention, and FIG. ) Side view of the figure,
FIG. 6C is an explanatory plan view of FIG.

6A is a three-dimensional explanatory diagram of an attachment plate outside the flange in FIG. 5, FIGS. 6B and 6C are three-dimensional explanatory diagrams of joint angles inside the flange, and FIG. 3D explanatory drawing of the additional washer.

FIG. 7 (a) is a partial sectional front view showing an example of a high-strength bolt joint structure of a box-shaped cross-section column and an H-shaped cross-section beam in Embodiment 3 of the present invention, and FIG. ) Side view of the figure,
FIG. 6C is an explanatory plan view of FIG.

FIG. 8A and FIG. 8B show FIGS.
7C is a three-dimensional explanatory view of the joint angle, and FIG. 7C is a three-dimensional explanatory view of the friction additional washer of FIGS. 7A to 7C.

9A is a three-dimensional explanatory view showing an example of a conventionally known high-strength bolt joint structure of a box-shaped cross-section column and an H-shaped cross-section beam, and FIG. 9B is a side view of FIG. 9A. Explanatory diagram, (c) diagram,
(B) Side view of the figure.

FIG. 10A is a three-dimensional explanatory view showing an example of a high-strength bolt joint structure of another conventionally known box-shaped column and H-shaped beam, and FIG. 10B is a diagram of FIG. And FIG. 6C is a side explanatory view of FIG.

[Explanation of symbols]

1 Box-shaped cross-section column 2 Diaphragm 2a Upper flange side diaphragm 2b Lower flange side diaphragm 2c Column core 3 Beam mounting part 3a Upper flange 3b Lower flange 4H-shaped cross section beam 4a Upper flange 4b Lower flange 4u Web 5a Outside attachment plate 5b, 5c Inner plate 51 Outer plate 51a, 51b Outer plate 52, 53 Inner plate 5h Bolt hole 5z Slot hole 6a, 6d Web side plate 61, 62 Web side plate 6h Bolt hole 6z Slot hole (bolt hole) 7 High-strength bolt 8a Upper split tee 8b Lower split tee 8f Flange 8p, 8u Horizontal web 9 High-strength bolt 10 High-strength bolt 11 Missing number 12 Friction extension washer 12h Bolt hole 13a, 13b, 13c, 13d Joint angles 13e, 13f, 13g, 13i Joy Toanguru 13h bolt holes 13z slotted hole fa vertical plate (joint angle) fb horizontal plate (joint angle) 14a top split tee 14b lower split tee 14f flange 14u vertical webs

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2E125 AA04 AA14 AB01 AB16 AC15                       AC16 AG03 AG12 BA52 BB02                       BB08 BB22 BC05 BD01 BE06                       BF06 BF08 CA06 CA14 EA25

Claims (6)

[Claims] 1. A high-strength bolt joint is arranged such that opposing H-shaped cross-section members to be joined are abutted against each other, and upper and lower attachment plates that straddle and abut the flanges of the opposed H-shaped cross-section members. In a high-strength bolt friction welding structure for H-shaped cross-section materials, at least one of the H-shaped cross-section material side addition plate bolt holes is used as a slot hole, and the friction plate material is brought into contact with the outer surface of the addition plate,
High-strength bolt joints between the friction plate, the attachment plate, and the flange of the H-shaped cross-section material, so that the sliding frictional force between the addition plate and the friction plate and the flange of the addition plate and the H-shaped cross-section material absorbs the energy acting on the joint. A high-strength bolt joint structure of H-shaped cross-section material having a friction damper. 2. High strength is provided via a pair of left and right attachment plates which are arranged so that the webs of the H-shaped cross-section members facing each other to be joined are butted against each other and abutted across the webs of the H-shaped cross-section members facing each other. In a high-strength bolt friction joining structure for H-shaped cross-section materials to be bolt-joined, at least one H-shaped cross-section material side addition plate bolt hole is used as a slot hole, and the friction plate is brought into contact with the outer surface of the addition plate to cause friction. The plate, the attachment plate and the web of the H-shaped cross-section material are joined together by high-strength bolts so that the energy acting on the joint is absorbed by the sliding frictional force between the addition plate and the friction plate and the web of the addition plate and the H-shaped cross-section material. The high-strength bolt joint structure having an H-shaped cross-section material having a friction damper according to claim 1. 3. A high-strength bolt friction welding structure for a box-shaped column and an H-shaped beam, in which the box-shaped column and the H-shaped beam are joined by a high-strength bolt through a split tee joined to the box-shaped column. , The tip of the horizontal web of the split tee is arranged so as to abut the tip of the flange of the H-shaped cross section, and the joint angle is horizontal across the inside of the horizontal web of the split tee and the inside of the flange of the H cross section. The abutment plate is abutted against the horizontal plate of the joint angle across the outside of the horizontal web of the split tee and the outside of the flange of the H-shaped cross-section beam while abutting the plate. The bolt holes of the attachment plate on the beam side of the cross section and the bolt holes of the horizontal plate of the joint angle are used as slot holes, and a friction plate is brought into contact with the outside of the horizontal plate of the attachment angle and the joint angle, The friction plate, the attachment plate, the horizontal plate of the joint angle, and the flange of the H-shaped cross section are joined by high-strength bolts, and between the addition plate and the friction plate, the horizontal plate of the addition plate and the joint angle and the friction plate, and the flange of the H-shaped cross section material. , A high-strength bolt joint structure of H-shaped cross-section material having a friction damper, characterized in that the energy acting on the joint is absorbed by the sliding frictional force between the horizontal plate of the joint angle and the flange of the H-shaped cross-section material . 4. In a high-strength bolt joint structure of a box-shaped column and an H-shaped beam, in which a box-shaped column and an H-shaped beam are joined by high-strength bolts through a split tee, the tip of the vertical web of the split tee is joined. , The flange of the H-section beam is arranged so that its tip end abuts at a right angle, and the vertical angle of the split tee and the flange of the H-section beam are arranged so as to face each other vertically and horizontally. High strength bolt connection of vertical plate to vertical web of split tee,
High-strength bolt joints of flanges of H-shaped cross-section beams are joined between horizontal plates of joint angles facing each other vertically, and at least bolt holes of horizontal plates of joint angles on the flange side of H-shaped cross-section beams are used as slot holes. A friction plate is brought into contact with the outside of the horizontal plate of the joint angle, and the friction plate, the horizontal plate of the joint angle, and the flange of the H-section beam are joined by high-strength bolts. The high-strength bolt friction joint structure of a box-shaped cross-section column and an H-shaped cross-section beam having a friction damper, wherein the sliding frictional force between the flanges absorbs energy acting on the joint. 5. In a high-strength bolt joint structure of a box-shaped column and an H-shaped beam, in which a box-shaped column and an H-shaped beam are joined by a high-strength bolt through a split tee, the tip of the vertical web of the split tee is connected. , The flange of the H-section beam is arranged so that its tip end abuts at a right angle, and the vertical angle of the split tee and the flange of the H-section beam are arranged so as to face each other vertically and horizontally. High strength bolt connection of vertical plate to vertical web of split tee,
High-strength bolt joints of H-shaped beam flanges are attached between the horizontal plates of the joint angles facing each other in the vertical direction. At least the bolt holes of the vertical plates of the joint angle on the vertical web side of the split tee are slot holes. The friction plate is brought into contact with the outer side of the vertical plate of the joint angle, and the friction plate, the vertical plate of the joint angle and the vertical web of the split tee are joined by high strength bolts, and the vertical plate of the friction plate and the joint angle and the vertical web of the split tee are joined. A high-strength bolt friction joint structure of a box-shaped column and an H-shaped beam having a friction damper, characterized in that energy acting on the joint is absorbed by a sliding frictional force between them. 6. The friction plate is a friction additional washer, and is an abutting plate having a slot hole formed therein, and is abutted on the outer side of a joint angle, according to any one of claims 1 to 5. A high-strength bolt friction joint structure of an H-shaped cross-section material or a box-shaped cross-section column and a H-shaped cross-section beam having the friction damper described in the above.