JP6757218B2 - Joint structure - Google Patents

Description

The present invention relates to a joining structure for joining a first joining member and a second joining member.

Such a joining structure is used, for example, when the existing truss beam is seismically reinforced, and when the seismic reinforcing member as the second joining member is joined to the existing truss beam as the first joining member. Applies.
When the existing truss beam is seismically reinforced, conventionally, a supporting plate joined to the gusset of the reinforcing member (square cane) as the second joining member is arranged on the lower surface of the lower chord member of the truss beam as the first joining member. Another sub-plate is placed on the upper surface of the lower chord material, and a high-strength bolt is inserted between the upper and lower sub-plates and screwed into the nut to tighten it, thereby applying a force along the length direction of the truss beam. It is known that the one is configured to be transmitted to a square cane which is a reinforcing member via a gusset (see, for example, Patent Document 1).
Further, U-shaped connecting members that sandwich the lower chord member from above and below are fitted from both sides of the lower chord member of the truss beam as the first joining member, and are used as the second joining member on the lower surface of the U-shaped connecting member. An epoxy resin-based adhesive is placed between the U-shaped connecting member and the lower chord member and between both U-shaped connecting members by arranging the supporting plate joined to the reinforcing member (square cane) of the above. , A structure is also known in which a base plate and a U-shaped connecting member are connected by bolts to transmit a force along the length direction of the truss beam to a square cane which is a reinforcing member (for example). , Patent Document 2).

Japanese Patent No. 4042996 Japanese Patent No. 5336125

However, in the prior art described in Patent Document 1, among the forces transmitted from the truss beam which is the first joining member to the square cane which is the second joining member, the force along the length direction of the truss beam is obtained. Since the frictional force between the lower chord material of the truss beam and the sub-plate due to the tightening of the high-strength bolt is transmitted from the truss beam to the square cane, for some reason between the lower chord material and the plate. There is a risk of slippage, which can adversely affect the transmission of force from the truss beam to the cane.
Similarly, in the prior art described in Patent Document 2, the force along the length direction of the truss beam is the force of the epoxy resin adhesive filled between the lower chord member of the truss beam and the U-shaped connecting member. Since the adhesive force is transmitted as a factor, slippage may occur between the lower chord member and the U-shaped connecting member, which has the same problem as the prior art of Patent Document 1.

The present invention focuses on such a conventional problem, and an object of the present invention is a force transmitted from the first joining member to the second joining member along the member length direction of the first joining member. It is an object of the present invention to provide a joint structure capable of reliably transmitting the above from the first joint member to the second joint member.

The first characteristic configuration of the present invention is a joining structure for joining a first joining member and a second joining member, in which the first joining member is oriented in the opposite direction in the member length direction of the first joining member. An intermediate joining member provided with a pair of receiving side portions and joined to the second joining member includes a pair of contact side portions opposite in the member length direction of the first joining member, and the pair of contact side portions. The point is that the first joining member and the second joining member are joined in a state where the pair of receiving side portions are in contact with each other in the member length direction of the first joining member.

According to this configuration, the first joining member includes a pair of receiving sides that are opposite in the member length direction, and the intermediate joining member joined to the second joining member has the member length of the first joining member. It is provided with a pair of contact side portions that are opposite in the direction, and the pair of contact side portions and the pair of receiving side portions are joined in a state of being in contact with each other in the member length direction of the first joining member. There is no risk of slippage between the pair of receiving side portions provided and the pair of contact side portions provided on the intermediate joint member for joining the second joint member, and the transmission from the first joint member to the second joint member. Of the forces to be applied, the force along the member length direction of the first joining member is reliably transmitted from the first joining member to the second joining member.

The second characteristic configuration of the present invention is that the intermediate joining member is adjustable in posture with respect to the first joining member.

According to this configuration, since the intermediate joining member is adjustable in posture with respect to the first joining member, the pair of receiving sides provided in the first joining member is provided with respect to the pair of receiving sides provided in the intermediate joining member. The posture of the padding side can be adjusted. Therefore, it is possible to appropriately abut the pair of contacting side portions with respect to the pair of receiving side portions and reliably transmit the force along the member length direction of the first joining member from the first joining member to the second joining member. it can.

The third characteristic configuration of the present invention is that the intermediate joint member includes a first intermediate joint member having one of the pair of contact side portions and a second intermediate portion having the other contact side portion. It is at the point where it is divided into a joining member.

According to this configuration, the intermediate joint member is divided into a first intermediate joint member having one of the contact side portions of the pair of contact side portions and a second intermediate joint member having the other contact side portion. Therefore, the postures of the pair of contact sides can be adjusted separately for each of the pair of receiving sides provided in the first joining member, and the pair of contacting sides with respect to the pair of receiving sides can be adjusted. The contact can be performed more appropriately and easily.

The fourth characteristic configuration of the present invention is the direction in which the first joining member is orthogonal to the receiving side member having the pair of receiving side portions and the receiving side member in the member length direction of the first joining member. A pair of sandwiching members to be sandwiched between the two sandwiching members are provided, and the pair of sandwiching members sandwich the intermediate joining member having the pair of contact side portions in a direction orthogonal to the member length direction of the first joining member. ..

According to this configuration, the first joining member includes a receiving side member having a pair of receiving side portions and a pair of sandwiching members that sandwich the receiving side member in a direction orthogonal to the member length direction of the first joining member. Since the pair of sandwiching members sandwich the intermediate joining member provided with the pair of contact sides in a direction orthogonal to the member length direction of the first joining member, the pair of receiving sides and the pair of contact sides The movement of the portion in the direction orthogonal to the member length direction of the first joining member is restricted by the pair of sandwiching members, and the contact of the pair of contact side portions with the pair of receiving side portions is appropriate and reliable.

The fifth characteristic configuration of the present invention is that the pair of receiving side portions and the pair of contact side portions come into contact with each other between the pair of sandwiching members.

According to this configuration, since the pair of receiving side portions and the pair of contacting side portions come into contact with each other between the pair of sandwiching members, the contact of the pair of receiving side portions with respect to the pair of receiving side portions is more appropriate and reliable. It becomes.

Overall front view showing an application example of the joint structure according to the first embodiment Front view of the main part of the joint structure according to the first embodiment Longitudinal side view of the main part of the joint structure according to the first embodiment Perspective view of the main part of the joint structure according to the first embodiment An exploded perspective view of a main part of the joint structure according to the first embodiment. Front view of the main part of the joint structure according to the second embodiment Front view of the main part of the joint structure according to the third embodiment

An embodiment of the joint structure according to the present invention will be described with reference to the drawings.
The joint structure of the present invention is, for example, in the case of seismic reinforcement of an existing building frame or the like, in a fire-free environment, a reinforcing member for earthquake resistance as a second joint member with respect to the existing building frame as the first joint member. It is applied when joining and reinforcing earthquake resistance.
Hereinafter, the first to third embodiments will be described with respect to the joint structure.

[First Embodiment]
In the first embodiment, as shown in FIG. 1, the reinforcing member 2 is joined to the existing truss beam 1 as the first joining member with the seismic reinforcing member 2 as the second joining member. As an example, H-shaped steel is used and is joined downward along the member length direction X of the truss beam 1.
The existing truss beam 1 includes an upper chord member 3 and a lower chord member 4 made of a shaped steel, and the upper chord member 3 and the lower chord member 4 are used as a bundle member 6 or an oblique member made of a shaped steel via a plurality of types of gusset plates 5 having different shapes. It is configured by being connected to each other by a material 7. Such a truss beam 1 is horizontally connected and held to a plurality of assembly columns 8 formed by combining shaped steel, and each assembly column 8 is erected on a foundation portion 9 buried in the ground. Rus.
On the other hand, the seismic reinforcing member 2 is arranged between the assembly columns 8 that hold the truss beam 1, and is horizontally connected and held to the reinforcing column 10 made of shaped steel. That is, a pair of reinforcing columns 10 and a reinforcing member 2 are formed in a gate shape and are arranged inside the pair of assembled columns 8 and the truss beam 1, and each reinforcing column 10 is appropriately means for the assembled columns 8. Joined by.

As shown in FIGS. 3 to 5, the lower chord member 4 of the truss beam 1 is a pair of angle steels (angle members) 4a as a pair of sandwiching members that sandwich the gusset plate 5 in a direction Y orthogonal to the member length direction X. The pair of angle steels 4a and 4b and the gusset plate 5 are connected and fixed by a plurality of bolts and nuts 11 and rivets, and the gusset plate 5 is connected to the bundle member 6 made of angle steel and the gusset plate 5. The diagonal member 7 is connected and fixed by a plurality of bolts / nuts 11 and rivets.
As shown in FIGS. 2 and 5, the gusset plate 5 to which the bundle member 6 is connected has a pair of left and right inclined sides of the downward constriction in the front view, that is, a pair of opposite directions in the member length direction X of the truss beam 1. It is provided with inclined sides, and the lower portions of the pair of inclined sides function as a pair of receiving side portions 5a and 5b described later.
On the other hand, in the reinforcing member 2 made of H-shaped steel, as shown in FIGS. 2 to 5, the plate-shaped holding member 12 faces upward at a position corresponding to the gusset plate 5 in the flange portion of the H-shaped steel. The intermediate joining member 13 is held by the holding member 12 which is fixed in advance by welding.

The intermediate joining member 13 is a plate having substantially the same thickness as the gusset plate 5, and is sandwiched by a pair of angle steels 4a and 4b in a direction Y orthogonal to the member length direction X, as shown in FIGS. 2 and 5. The truss beam 1 is provided with a pair of abutting side portions 14a and 14b in opposite directions in the member length direction X of the truss beam 1 so as to abut against the pair of receiving side portions 5a and 5b described above, and is divided into two.
That is, the intermediate joining member 13 includes a first intermediate joining member 13a having one abutting side portion 14a that abuts on one receiving side portion 5a of the pair of receiving side portions 5a and 5b, and the other receiving side portion. It is divided into two parts, one receiving side portion 5a and the contacting side portion 14a, and the other receiving side portion 5b and the contacting side portion 14b, which are divided into two parts, that is, the second intermediate joining member 13b having the other contact side portion 14b that abuts on 5b. Is configured to abut between the pair of angle steels 4a and 4b, as shown in FIG.

The first intermediate joining member 13a and the second intermediate joining member 13b are connected and held to the holding member 12 by a plurality of bolts 15a and nuts 15b (see FIG. 3), respectively, and are bored in the intermediate joining members 13a and 13b, respectively. One or both of the bolt hole 16 (see FIG. 5) and the bolt hole 16 (see FIG. 5) formed in the holding member 12 are formed in the bolt hole 16 having a diameter appropriately larger than the diameter of the bolt 15a. As a result, the intermediate joining members 13a and 13b are configured so that their attitudes can be adjusted with respect to the truss beam 1.
In other words, each of the intermediate joining members 13a and 13b is configured so that the posture of the gusset plate 5 provided with the pair of receiving side portions 5a and 5b can be adjusted, and one receiving side portion 5a and the contact side portion 14a thereof. It is configured so that the other receiving side portion 5b and the contacting side portion 14b can be brought into contact with each other over the entire length of the inclined side portion and over the entire length of the inclined side portion.

Between the two intermediate joining members 13a and 13b, the two intermediate joining members 13a and 13b are located in the middle in the vertical direction, and the two intermediate joining members 13a and 13b are sandwiched in the direction Y orthogonal to the member length direction X. In this state, a pair of first fixing members 17a and 17b made of angle steel are arranged, and the pair of first fixing members 17a and 17b and both intermediate joining members 13a and 13b are provided with bolts 18a and nuts 18b (see FIG. 3). ) Is connected and fixed, and a plate-shaped spacer 19 is inserted between the first fixing members 17a and 17b and the angle steels 4a and 4b, if necessary.
A pair of plate-shaped second fixing members 20a and 20b are arranged above the intermediate joining members 13a and 13b in a state where the gusset plate 5 is sandwiched in the direction Y orthogonal to the member length direction X. The pair of second fixing members 20a and 20b and the intermediate joining members 13a and 13b are connected and fixed by bolts 21a and nuts 21b (see FIG. 3), respectively. Due to the presence of the pair of second fixing members 20a and 20b, twisting (relative deviation in the Y direction) of both intermediate joining members 13a and 13b with respect to the gusset plate 5 is more reliably prevented, and both intermediate joining members are joined. It is also possible to prevent the members 13a and 13b from falling off downward.

[Second Embodiment]
The second embodiment is shown in FIG. 6, and is not significantly different from the first embodiment described above. That is, in the first embodiment, the second fixing members 20a and 20b are arranged above the intermediate joining members 13a and 13b and connected and fixed by the bolts 21a and the nuts 21b, but in the second embodiment, they are connected and fixed. As shown in FIG. 6, the second fixing members 20a and 20b have been abolished, and the vertical heights of the intermediate joining members 13a and 13b have been lowered accordingly.
Even if the second fixing members 20a and 20b are abolished in this way, the pair of receiving side portions 5a and 5b provided on the gusset plate 5 and the pair of contact side portions 14a and 14b provided on the intermediate joining member 13 are paired. As long as the angle steels 4a and 4b of the above are in contact with each other, the contact between the receiving side portions 5a and 5b and the contact side portions 14a and 14b is extremely reliable.
Since the other configurations are the same as those in the first embodiment, the description will be omitted by adding the same reference numerals as those in the first embodiment in order to avoid duplicate explanations.

[Third Embodiment]
In the first and second embodiments, the reinforcing member 2 made of H-shaped steel is joined to the existing truss beam 1 downward along the member length direction X of the truss beam 1. In the embodiment, as shown in FIG. 7, a square cane 2 made of a shaped steel is used as a reinforcing member. That is, the cane 2 which is a reinforcing member for earthquake resistance as a second joining member is joined to the existing truss beam 1 as the first joining member.
A plate-shaped holding member 22 for a cane (corresponding to the holding member 12 of the first embodiment) is connected and fixed to the upper end of the cane 2, and a first intermediate joining member is connected to the holding member 22 for the cane. The intermediate joining member 13 composed of 13a and the second intermediate joining member 13b is attached to the truss beam 1 by a plurality of bolts and nuts 23 so that the posture can be adjusted. Then, the lower part of the cane 2 is connected and fixed to the existing assembly pillar 8 with reference to FIG. 1, or when the reinforcing pillar 10 is newly erected, the reinforcing pillar 10 is connected to the lower side. It is connected and fixed, or is connected and fixed over the assembly column 8 and the reinforcing column 10.
Since the other configurations are the same as those in the first embodiment, the same reference numerals will be given to omit the description in the same manner as in the second embodiment. However, also in this third embodiment, the second fixing member 20a, 20b can be abolished and implemented.

[Another Embodiment]
(1) In the above embodiment, an example is shown in which the intermediate joining member 13 can adjust the posture with respect to the truss beam 1 which is the first joining member. However, depending on the manufacturing accuracy of the intermediate joining member 13, the truss beam is not always used. It is not necessary to make the posture adjustable with respect to 1.
Further, although the example in which the intermediate joining member 13 is divided into the first intermediate joining member 13a and the second intermediate joining member 13b is shown, the intermediate joining member 13 is composed of a single member, and the single intermediate thereof is formed. It is also possible to provide the joining member 13 with a pair of contact sides 14a and 14b.
In any case, the shapes of the contact side portions 14a and 14b of the intermediate joining member 13 are determined by the shape of the gusset plate 5 that functions as the receiving side portions 5a and 5b. Therefore, for example, if the left and right sides of the gusset plate are parallel in the vertical direction, the contact side portions 14a and 14b of the intermediate joining member 13 are also parallel in the vertical direction, and the shapes of the contact side portions 14a and 14b are appropriately changed. It is possible.

(2) In the above embodiment, an example is shown in which the pair of receiving side portions 5a and 5b and the contact side portions 14a and 14b abut between the pair of sandwiching members 4a and 4b, but the pair of sandwiching members 4a and 4b It can also be configured to come into contact with a portion that is out of the space, for example, above the pair of sandwiching members 4a and 4b.
Further, the pair of sandwiching members 4a and 4b are not necessarily indispensable, and the pair of sandwiching members 4a and 4b can be eliminated.

(3) In the above embodiments, the existing truss beam 1 is shown as the first joining member, and the seismic reinforcing member 2 is shown as the second joining member. However, the first and second joining members 1 and 2 are shown. , Not limited to truss beams and their reinforcing members, it can also be applied to various building frames, and further, it is applied to various joining members other than building frames and implemented as a joining structure between these joining members. be able to.

1 1st joint member 2 2nd joint member 4a, 4b Pair of sandwiching members 5a, 5b Pair of receiving side parts 13 Intermediate joint member 13a 1st intermediate joint member 13b 2nd intermediate joint member 14a, 14b Pair of contact side parts X Member length direction Y Direction orthogonal to the member length direction

Claims (5)

It is a joining structure that joins the first joining member and the second joining member.
The first joining member includes a pair of receiving side portions opposite to each other in the member length direction of the first joining member, and the intermediate joining member joined to the second joining member is a member of the first joining member. The first joint is provided with a pair of contact side portions opposite in the length direction, and the pair of contact side portions and the pair of receiving side portions are in contact with each other in the member length direction of the first joint member. A joining structure in which a member and a second joining member are joined. The joining structure according to claim 1, wherein the intermediate joining member is adjustable in posture with respect to the first joining member. The claim that the intermediate joint member is divided into a first intermediate joint member having one of the contact side portions of the pair of contact side portions and a second intermediate joint member having the other contact side portion. The joint structure according to 1 or 2. The first joining member includes a receiving side member having the pair of receiving side portions and a pair of sandwiching members that sandwich the receiving side member in a direction orthogonal to the member length direction of the first joining member. The invention according to any one of claims 1 to 3, wherein the pair of sandwiching members sandwich the intermediate joining member provided with the pair of contact sides in a direction orthogonal to the member length direction of the first joining member. Joined structure. The joining structure according to claim 4, wherein the pair of receiving side portions and the pair of contact side portions come into contact with each other between the pair of sandwiching members.

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