JP2000204671A - Joining structure for frame and truss structural material or brace material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve reinforcing workability by joining a gusset plate to a steel pipe column with an external reinforcing material. SOLUTION: In a rigid-frame structure with a brace, a brace material 3 is joined by bolts 7 via a pipe inserting gusset plate 5 and a splice plate 6 to a gusset plate 4 previously joined to the side of a column 1 and a beam 2 in a corner part position of a.joining place of the column 1 and the beam 2 by a steel pipe being a frame. A joining side upper part with the column 1 of the gusset plate 4 and the column 1 are obliquely joined by welding by a vertical stiffner 10 to the gusset plate 4 projected in the direction orthogonal to this side surface from a side surface of the column 1. When the column 1 is a concrete-filled steel pipe column by filling concrete inside a hollow square steel pipe, the stiffner 10 is joined at the tip to the end of a highly rigid steel pipe web part of the column 1 by a steel pipe to thereby improve concrete filling workability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure between a truss beam, a brace material of a frame with a brace, and a frame such as a column.

[0002]

2. Description of the Related Art For example, in a rigid frame with a brace, as shown in FIGS. 11 and 12, an end of a brace material 3 is also joined to a joint between a column 1 and a beam 2. However, as shown in FIGS. The brace material 3 is joined to the corner of the gusset plate 4 which has been joined in advance to the column 1 and the beam 2 at the corner of the joint.

The example shown in FIG. 11 is of a type in which a brace material 3 is joined to the gusset plate 4 via a pipe passing gusset 5, and is formed of a hollow steel pipe or a concrete-filled steel pipe (CF).
T) 4
A slit is provided at a location, and the plate of the pipe passing gusset 5 in which the plate is cross-shaped is inserted into the slit of the brace material 3 and welded, and the protruding end of the plate from the brace material 3 is butted against the gusset plate 4. Then, a splice plate 6 is applied to the abutting portion, and the pipe passing gusset 5 is joined to the gusset plate 4 through the splice plate 6 using a bolt 7.

The example shown in FIG. 12 is of a type in which the brace material 3 is joined to the gusset plate 4 via an end plate 8, and the end opening of the brace material 3 such as a hollow steel pipe is closed. End plate 8 is joined,
The end plate 8 is fixed to the gusset plate 4 with bolts 7 via the splice plate 6.

In such a joint structure, since the force from the brace material 3 is transmitted to the column 1, it is necessary to reinforce the column 1. Conventionally, as a structure for this, for example, FIG.
1. As shown in FIG. 12, when the column 1 is a hollow steel tube column or a concrete-filled steel tube (CFT) column, a substantially plate is formed inside the column 1 at two points, a joint with the gusset plate 4 and a joint with the beam 2. The inner diaphragm 20 is provided in a direction perpendicular to the axial direction of the column 1. The concrete-filled steel pipe column is formed by densely filling concrete or mortar in the hollow interior of a steel pipe and hardening the same. The concrete or the like filled therein also bears a compressive force. The bending strength can be improved.

FIG. 13 and FIG. 14 show a case where the truss structural material is, for example, the upper chord material or the lower chord material of the truss beam. Similarly, in order to join to the column 1 made of a hollow steel pipe or a concrete filled steel pipe (CFT), slits are provided at two places above and below the joint end of the truss chord material 9, and a plate-like 1
One end of each gusset plate 21 is inserted into this slit, and the other end is abutted against the tip of a plate-shaped gusset 1a projecting from the column 1 side in the orthogonal direction. The splice plate 6 is applied to both sides of the butted portion of the gusset, and the gusset plate 21 is gusseted with the bolt 7 through the splice plate 6.
a.

In this joint structure between the truss chord 9 and the column 1, the truss chord 9 is also attached to the column 1 to which the truss chord 9 is joined.
Therefore, it is necessary to reinforce it. Conventionally, for example, as shown in FIG. 13, a pillar 1 made of a hollow steel pipe column or a concrete filled steel pipe (CFT) column is used.
The inner diaphragm 20 having a substantially plate shape is provided at two positions at the upper and lower levels of the gusset 1a in a direction perpendicular to the axial direction of the column 1.

[0008]

In order to reinforce the column 1 as described above, if the inner diaphragm 20 is provided inside the column 1, the column 1 to which the brace material 3 as shown in FIGS. In the case of, the inner diaphragm 20 is provided at a total of three places at the joint part with the beam 2 and the joint part with the gusset plate 4 to which the brace material 3 is joined, and the number of the installed diaphragms 20 is If the shape of the brace material 3 is different, it is expected that the number will increase.

The same applies to the case where the truss structural member is the truss string member 9 of the truss beam as shown in FIGS. 13 and 14, and the column 1 has the upper and lower levels of the gusset 1a to which the truss string member 9 is joined as described above. Since the inner diaphragm 20 is provided at two positions, when the truss chord material 9 is the upper chord material and the lower chord material is summed, the inner diaphragm 20 is provided at four places with respect to the column 1 in total.
20 will be provided.

The inner diaphragm 20 is usually welded to the inside of the column 1 made of steel pipe by electroslag welding. In the electroslag welding, the electrode wire is fed into the molten slag. In this method, the wire and the base material are welded by utilizing the heat generated by the resistance of the slag. Moreover, since a large number of inner diaphragms 20 are welded by such a welding method, the workability cannot be said to be good.

When a large number of inner diaphragms 20 are provided inside the column 1, in the case of a concrete-filled steel pipe column, the workability of concrete filling work inside the steel pipe is not good.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned disadvantages of the prior art, and to join a truss structural material and a brace material to a framework such as a steel pipe column or a concrete-filled steel pipe column. It is not necessary to arrange the inner diaphragm as in the past, it can be reinforced at the outer part of the pillar, the workability of reinforcement is good, and the skeleton and truss structural material or An object of the present invention is to provide a joining structure with a brace material.

[0013]

In order to achieve the above object, the present invention firstly provides a joining structure for joining a brace material to a steel pipe column as a frame via a gusset plate. Secondly, the outer reinforcing member obliquely connects the upper portion of the gusset plate and the steel pipe column to a gusset plate projecting from a side surface of the steel pipe column in a direction perpendicular to the steel tube column. Thirdly, when the skeleton is a rectangular steel pipe column, the external reinforcing member is provided on the gusset plate protruding from a side surface of the steel pipe column in a direction orthogonal to the stiffener. The gist is an L-shaped reinforcing member for joining the upper part of the plate and the steel pipe flange of the steel pipe column.

Fourthly, in a joint structure for joining a chord member as a truss structure member to a steel pipe column as a frame via a gusset plate, the gusset plate is formed in a plane Y-shape and branched into two branches of the gusset plate. Fifth, in a case where the framework is a rectangular steel pipe column, the tip of the gusset plate is bonded to the steel pipe web.

According to the first aspect of the present invention, since the external reinforcing member is provided between the gusset plate to which the brace member is joined and the steel tube column which is the skeleton, the external reinforcing member allows the brace member of the steel tube column to be connected to the steel tube column. Is reinforced.
In this case, since the external reinforcing material is provided outside the steel pipe column, work for reinforcement is easy, and it does not hinder the filling of concrete into the steel pipe column.

According to the second aspect of the present invention, in addition to the above-described operation, the upper portion of the gusset plate and the steel pipe column are obliquely joined by a vertical stiffener, so that the conventional gusset plate can be used as it is. By simply adding a vertical stiffener to the structure, the joint of the steel pipe column can be reinforced with a simple structure. And, as for the column at the place reinforced by the vertical stiffener, there is no need to provide the inner diaphragm in the steel pipe column, so the number of inner diaphragms can be reduced.

According to the third aspect of the present invention, in addition to the above-mentioned functions, when the frame is a square steel tube column, the upper portion of the gusset plate protruding from the side surface of the steel tube column in a direction orthogonal to the side is connected to the steel tube. By joining the steel pipe flange portion of the column with the L-shaped reinforcing material, the force of the brace material can be transmitted to the steel pipe web, which is a highly rigid portion, by the out-of-plane resistance of the steel pipe and the bending resistance of the reinforcing material. Can be easily and reliably reinforced.

According to the fourth aspect of the present invention, a gusset plate for joining a chord member to a steel pipe column as a frame is formed in a plane Y-shape, and the forked end of the gusset plate is branched into a steel pipe column. By joining to the steel pipe column, it is possible to reinforce the joint portion between the steel pipe column and the chord material with a simple configuration only by changing the shape of the gusset plate without providing the inner diaphragm inside the steel pipe column. Moreover, the reinforcement does not hinder the filling of the concrete into the steel pipe.

According to the fifth aspect of the present invention, in addition to the above-mentioned functions, when the frame is a rectangular steel tube column, the force from the chord is a portion having high rigidity by the gusset plate branched into two branches. It can be transmitted to the steel pipe web, and reinforcement of the steel pipe column can be easily and reliably achieved.

[0020]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view showing a first embodiment of a joint structure of a skeleton and a truss structural material or a brace material according to the present invention, and FIG. 2 is a cross-sectional plan view of a main part of the first embodiment.
11, the same components as those of the conventional example shown in FIG. 12 are denoted by the same reference numerals.

The basic structure of the joint structure of the present invention is the same as before, for example, in the case of a rigid frame with braces, the side of the column 1 and the beam 2 is located at the corner of the joint between the column 1 and the beam 2 by the steel pipe as the framework The brace material 3 is joined to the gusset plate 4 previously joined to the gusset plate 4 by bolts 7 through the pipe passing gusset plate 5 and the splice plate 6.

In such a joint structure, the present invention joins the gusset plate 4 and the steel pipe column 1 with an external reinforcing material. As an example of the external reinforcing material, as shown in FIGS. 1 and a vertical stiffener for connecting the upper part of the gusset plate 4 on the joint side with the column 1 and the column 1 to the gusset plate 4 projecting in a direction orthogonal to the stiffener.
It joined by welding at 10 at an angle.

When the column 1 is a concrete-filled steel pipe column in which concrete 11 is filled in a hollow rectangular steel pipe as shown in FIG. 2, the stiffener 10 has a tip made of a steel pipe.
To the end of the highly rigid steel pipe web portion 1b. As a result, the force from the brace material 3 is transmitted to the web portion 1b of the column 1 through the gusset plate 5, the gusset plate 4, and the stiffener 10, and the portion of the column 1 to which the stiffener 10 is joined is reinforced. There is no need to provide the inner diaphragm 20 for this purpose.

The stiffener 10 is a gusset plate 4
The brace material 3 is attached to the remaining portion other than the attachment portion, such as the through gusset plate 5 and the splice plate 6, so that there is no problem in attaching the brace material 3 to the gusset plate 4.

An inner diaphragm 20 is provided inside the column 1 at the joint portion with the beam 2 other than the portion corresponding to the portion where the stiffener 10 is provided, as in the prior art.

FIG. 3 shows a case where the column is a concrete-filled steel pipe column in which concrete 11 is filled in a hollow circular steel pipe.
Also in this case, the tip of the stiffener 10 is joined to the side of the circular steel pipe by welding, but the angle between the stiffener 10 and the side of the circular steel pipe is set to an angle at which the force from the gusset plate 4 is smoothly transmitted to the circular steel pipe. I do.

FIGS. 4 and 5 show a second example of the external reinforcing member.
When the column 1 is a square steel tube column, the upper portion of the gusset plate 4 and the flange portion 1c of the column 1 are connected to the gusset plate 4 projecting from the side surface of the column 1 by the steel tube in a direction orthogonal to the column. It is joined by a reinforcing member 12 having a character shape.

The L-shaped reinforcing member 12 is positioned on both sides of the gusset plate 4 to join the side ends of the H-shaped horizontal portion 12a, and to connect the outer surface of the vertical portion 12b to the steel pipe flange portion 1 of the column 1.
Then, the lower end and the side end of the vertical portion 12b were joined to the steel pipe flange portion 1c of the column 1 by welding.

As a result, the flange portion 1 of the column 1 made of steel pipe
The force from the brace material 3 can be transmitted to the highly rigid steel pipe web portion 1b by the out-of-plane resistance c and the bending resistance of the reinforcing member 12. As a result, it is not necessary to provide the inner diaphragm 20 for reinforcement on the column 1 where the reinforcing material 12 is provided.

FIGS. 6 and 7 show that the steel pipe as the column 1 is, for example, 200
In the case of cold forming which is performed at a temperature of not more than 0 ° C., in this case, the welding of the reinforcing material 12 to the steel pipe corners as shown in FIGS. The upper and lower portions are welded to the steel pipe flange portion 1c, and one surface of the flat plate-like plate 13 is brought into contact with the side end of the reinforcing member 12 and is brought into surface contact with the side surface of the steel pipe as the column 1. The plate 13 is attached so as to straddle the reinforcing member 12 and the column 1 by being brought into contact with each other.

As a result, the force from the brace material 3 can be transmitted to the highly rigid steel pipe web portion 1b via the gusset plate 4, the reinforcing material 12, and the contact plate 13, and the column 1 where the reinforcing material 12 is provided is applied to the column 1. There is no need to provide the inner diaphragm 20 for reinforcement.

FIGS. 8 and 9 show a second embodiment, in which a truss chord material 9 such as an upper chord material or a lower chord material, which is a truss structural material, is joined to a column 1 made of a steel pipe as a frame via a gusset plate. In the above, the gusset plate 14 is formed in a plane Y-shape, and two other joining pieces 14b and 14c are attached to the tip of the joining piece 14a inserted into the slit formed in the truss chord material 9, V-shaped welding was performed so that the tips of 14b and 14c were open.

In order to join the bifurcated tip of the gusset plate 14 to the rectangular steel pipe as the column 1, the gusset 1a projecting from the steel pipe web 1b of the rectangular steel pipe as shown in FIG. The tips of the two joining pieces 14b and 14c are brought into contact with the tip of the gusset 1a and the joining pieces 14b and 14c.
A splice plate 6 is applied to both sides of 14c, and the two are joined with bolts 7. The joint piece 14a is inserted into a slit formed in the truss chord member 9 made of steel pipe and welded.

In the column 1 to which the truss chords 9 are joined by the gusset plate 4 having a flat Y-shape in this manner, the force from the truss chords 9 is transmitted to the highly rigid steel pipe web portion 1b. However, the inner diaphragm for reinforcement at this portion becomes unnecessary.

FIG. 10 shows a case where the column is a circular steel pipe. In this case, similarly to the square steel pipe column described above, the force from the truss chord material 9 is obtained by joining the truss chord material 9 with a flat Y-shaped gusset plate 4. Can be transmitted obliquely to the side of the circular steel pipe column, and the inner diaphragm for reinforcement at the place of attachment of the gusset plate 4 becomes unnecessary. As described above, the truss chord material 9 in the second embodiment is the upper chord material and the lower chord material of the truss structure material, and the inner diaphragm is not required at the joint portion between the upper chord material and the lower chord material with the column 1. is there.

[0036]

As described above, the joint structure of the skeleton and the truss structural material and the brace material according to the present invention is such that the brass material, the upper chord material and the lower chord material are joined to the steel pipe column or the concrete-filled steel pipe column. In this case, there is no need to dispose an inner diaphragm inside the pillar as in the past, and it is easy to reinforce the outer part of the pillar, and the workability of reinforcement is good. It is possible to reduce or eliminate the inner diaphragm which hinders the filling of concrete into the inside, and to improve the workability of filling the concrete.

[Brief description of the drawings]

FIG. 1 is a front view showing a first example of a joint structure of a skeleton and a brace material according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional plan view of a main part showing a first example of a joint structure of a skeleton and a brace material according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional plan view of a main part showing another example of the first example of the joint structure of the skeleton and the brace material as the first embodiment of the present invention.

FIG. 4 is a front view showing a second example of the joint structure of the skeleton and the brace material as the first embodiment of the present invention.

FIG. 5 is a cross-sectional plan view of a main part showing a second example of the joint structure between the skeleton and the brace material according to the first embodiment of the present invention.

FIG. 6 is a cross-sectional plan view of a main part showing another example of the second example of the joint structure of the skeleton and the brace material as the first embodiment of the present invention.

FIG. 7 is a side view of a main part showing another example of the second example of the joint structure of the skeleton and the brace material as the first embodiment of the present invention.

FIG. 8 is a cross-sectional plan view showing a joint structure of a skeleton and a truss structural member according to a second embodiment of the present invention.

FIG. 9 is a front view showing a second embodiment of the joint structure between the skeleton and the truss structure according to the second embodiment of the present invention.

FIG. 10 is a cross-sectional plan view of another example showing the second embodiment of the joint structure between the skeleton and the truss structure as the second embodiment of the present invention.

FIG. 11 is a front view of a conventional joining structure of a column and a brace material by a through gusset method.

FIG. 12 is a front view of a conventional joint structure of a column and a brace material by an end plate method.

FIG. 13 is a front view of a conventional joint structure between a column and a truss chord member.

FIG. 14 is a cross-sectional plan view of a conventional joint structure between a column and a truss chord member.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Column 1a ... Gusset 1b ... Steel pipe web part 1c ... Steel pipe flange part 2 ... Beam 3 ... Brace material 4 ... Gusset plate 5 ... Pipe passing gusset 6 ... Splice plate 7 ... Bolt 8 ... End plate 9 ... Truss chord material 10 ... Stiffener 11 Concrete 12 Reinforcement 12 a Horizontal part 12 b Vertical part 13 Abutment plate 14 Gusset plate 14 a, 14 b, 14 c
Joining piece 20 ... Inner diaphragm 21 ... Gusset plate

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tetsushi Shikada 2-9-1-1, Tobita-Shi, Chofu-shi, Tokyo Kashima Construction Co., Ltd. (72) Inventor Yukio Hayashi 1-2-1, Moto-Akasaka, Minato-ku, Tokyo 7 Kashima Construction Co., Ltd. (72) Inventor Kenichi Kono 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Nobuaki Yoshioka 1-3-3 Moto-Akasaka, Minato-ku, Tokyo No. 8 Kashima Construction Co., Ltd. Tokyo branch F term (reference) 2E125 AA04 AA14 AA33 AA35 AB01 AB16 AB17 AC15 AC16 AC29 AG03 AG04 AG12 AG32 AG45 AG48 AG57 BB02 BB22 BB31 BB35 BD01 BE06 BF04 CA05 CA14 CA19 CA90 EA01

Claims (5)

[Claims] 1. A joining structure for joining a brace material to a steel tube column as a skeleton via a gusset plate, wherein the gusset plate and the steel tube column are joined by an external reinforcing material. Joint structure. 2. The external reinforcing member is a vertical stiffener that obliquely connects an upper portion of the gusset plate and the steel pipe column to a gusset plate projecting from a side surface of the steel pipe column in a direction orthogonal to the side. Item 2. A joint structure between the frame and the brace material according to Item 1. 3. The external reinforcing member is, when the frame is a rectangular steel pipe column, an upper portion of the gusset plate and a steel pipe of the steel pipe column with respect to a gusset plate projecting from a side surface of the steel pipe column in a direction orthogonal to the side. The joint structure between a skeleton and a brace material according to claim 1, which is an L-shaped reinforcing material for joining the flange portion. 4. A joint structure for joining a chord member as a truss structural member to a steel tubular column as a frame via a gusset plate, wherein the gusset plate is formed in a plane Y-shape, and the gusset plate has a bifurcated tip. A joint structure between a truss and a truss structural member, characterized in that the section is joined to a steel pipe column. 5. The joint structure between a truss and a truss structural member according to claim 4, wherein when the skeleton is a square steel tubular column, the tip of the gusset plate is joined to the steel tubular web.