JP6863776B2 - Fitting structures and building structures - Google Patents

Description

The present invention relates to joint structures and building structures.

For example, in buildings such as buildings, structural materials such as steel frames are used for the framework. Such a structural material becomes the above-mentioned frame (building structure) by being assembled according to the building.

Then, when assembling the structural materials, the structural materials are connected to each other by applying a supporting plate to the connecting portion between the structural materials and fixing them with bolts (see, for example, Patent Documents 1 to 5).

Japanese Unexamined Patent Publication No. 2012-57450 Japanese Unexamined Patent Publication No. 2012-127165 Japanese Unexamined Patent Publication No. 6-173340 Japanese Unexamined Patent Publication No. 51-32006 Japanese Unexamined Patent Publication No. 62-175107

However, when the structural materials are connected using the supporting plates as in the above patent documents, a large number of supporting plates are required in addition to the structural materials, so that the number of parts to be used has increased. In addition, a large number of bolts were required to fix a large number of attachment plates. And it took a lot of time and effort to fix the bolts.

Therefore, an object of the present invention is mainly to solve the above-mentioned problems.

In order to solve the above problems, the present invention
In a joint structure in which two structural materials are connected
Each of the structural members integrally has a protruding portion protruding from only one side of the side portion.
The protrusion is a connecting member fixed integrally as joint before installation on site by welding to one of said side portions of the right and left of the structural member,
The two structural members are brought close to each other, and the protrusions are superposed on the other of the left and right side portions of the other structural material so as to be located on opposite sides of each other.
It is characterized in that each of the protruding portions and the side portion of the other structural member are fixed by bolt joints.

According to the present invention, it is possible to provide a joint that can be easily constructed by reducing the number of parts used for connecting the structural material and eliminating the protrusion from the structural material (flange portion) by the above configuration.

It is an exploded perspective view of the joint structure which concerns on this embodiment. It is a vertical sectional view of the joint structure of FIG. It is a side view of the joint structure of FIG. It is a horizontal sectional view which cut at the intermediate part in the vertical direction, and looked down at the joint structure of FIG. It is the same side view as FIG. 3 which shows the 1st modification of a joint structure. It is the same side view as FIG. 3 which shows the 2nd modification of the joint structure. It is the same side view as FIG. 3 which shows the 3rd modification of the joint structure. It is the same side view as FIG. 3 which shows the 4th modification of the joint structure. FIG. 6A is a horizontal cross-sectional view of the joint structure of FIG. 6A cut at an intermediate portion in the vertical direction and viewed downward. It is a vertical sectional view of the joint structure of FIG. 6A. It is the same side view as FIG. 3 which shows the 5th modification of the joint structure. FIG. 7A is a horizontal cross-sectional view of the joint structure of FIG. 7A cut at an intermediate portion in the vertical direction and viewed downward. FIG. 7A is a vertical cross-sectional view of the joint structure of FIG. 7A. It is a principle diagram of the joint structure which concerns on this embodiment. It is a moment diagram in the case of FIG. 8A. FIG. 8B is a diagram showing a combination of a moment diagram of FIG. 8B and a joint structure according to the present embodiment. It is a moment diagram similar to FIG. 8B when a plurality of bolts in each bolt joint portion are made. FIG. 10A is a partially enlarged view. It is a perspective view of the joint structure which concerns on a comparative example.

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
1 to 11 are for explaining this embodiment.

<Structure> The configuration will be described below.

For example, a structural material such as a steel frame (steel material) is used for the framework of a building such as a building. By assembling this structural material according to the building, the framework of the building (building structure) is constructed. When assembling structural materials, it is necessary to connect the structural materials (or provide a joint structure).

In contrast to the above basic configuration, this embodiment has the following configuration.

(1) First, the joint structure between structural materials will be described.

The joint structure of this embodiment is, for example, as shown in FIG. 1 (see also FIGS. 2 to 4), in which two structural members 1 and 2 are connected.
In the joint structure, each of the structural members 1 and 2 integrally has protrusions 32 and 42 protruding from one side (A side or B side).
Then, the two structural members 1 and 2 are brought close to each other, and the protruding portions 32 and 42 are superposed on the side portions (A side or B side) of the other structural members 2 and 1 so as to be located on opposite sides of each other. To.
Then, the protrusions 32 and 42 and the side portions of the other structural members 2 and 1 are fixed by bolt joints, respectively.

Here, as the two structural materials 1 and 2, those having substantially the same cross-sectional shape are used. Structural materials 1 and 2 are mainly assumed to be various metal materials such as steel frames and aluminum materials, but depending on the situation, wood, resin, other materials, or any of these materials may be used. It is possible to use the existing composite material. In the figure, the structural members 1 and 2 are assumed to extend linearly in the substantially horizontal direction. In this case, in the drawing, the left and right surfaces of the structural members 1 and 2 are the side portions (A side or B side) of the structural members 1 and 2. On the other hand, in the drawing, the upper and lower surfaces of the structural materials 1 and 2 are defined as the edges (or edge surfaces) of the structural materials 1 and 2.

It is assumed that the projecting portions 32 and 42 are firmly fixed to the structural materials 1 and 2 to such an extent that they can be regarded as integrally with the structural materials 1 and 2. The protrusions 32 and 42 should not be bent within a range (that is, not to spread or to bend) within a range (that is, in the vertical direction in the figure) of the structural members 1 and 2 (upper and lower in the figure). ) It is preferable to make it prominent.

When the structural members 1 and 2 are arranged close to each other, the protrusions 32 and 42 are made parallel to each other.

Bolt joints are mainly joints (or rivet joints) using fasteners 51 such as bolts and nuts. The bolt joint portion is provided with a bolt hole 52 (or a rivet hole) for attaching the fastener 51. Bolt joining will be described later.

In the embodiment of FIG. 1, the first protruding portion 32 is integrally provided on the right side portion (A side) of the first structural member 1, and the left side portion (B side) of the second structural member 2 is provided. 2 shows a case where the second protruding portion 42 is integrally provided. However, the first protrusion 32 is attached to the left side (B side) of the first structural member 1, and the second protrusion 42 is attached to the right side (A side) of the second structural member 2. It may be attached.

(2) At this time, the bolt joint between each of the projecting portions 32, 42 and the side portion of the other structural member 2, 1 is at least the position of the two tip portions of the projecting portions 32, 42 separated from each other. It is preferable to do it in.

Here, the tip of one protruding portion 32 (the bolt joint portion in) and the tip portion of the other protruding portion 42 (the bolt joint portion in) have a connection strength with respect to the longitudinal direction 55 of the structural members 1 and 2. Is separated by the required distance e (separation distance between the tip portions: see FIG. 3).

The bolt-joined portion with respect to the tip of one protruding portion 32 and the bolt-joined portion with respect to the tip of the other protruding portion 42 (that is, the two separated bolt-joined portions) are the lengths of the structural members 1 and 2. As for the direction orthogonal to the direction 55 (vertical direction in FIG. 3), one or a plurality of directions may be provided, respectively. For example, as shown in FIG. 3, the upper and lower parts and the central part may be provided at three positions (total of 6 places on the left and right), or as shown in the example of FIG. 5A, one place on the central part in the vertical direction (total of 2 places on the left and right). ) May be provided only, or may be provided at two upper and lower positions (a total of four positions on the left and right) as in the example of FIG. 5B. Alternatively, as in the example of FIG. 6A (to FIG. 6C), it may be provided at four or more locations in the vertical direction (for example, seven locations on one side).

Further, if the bolt joint portions are provided at two separated positions as described above, the number of bolt joint portions can be further increased. For example, when the bolt joint portion is provided up to the full space limit in the direction orthogonal to the longitudinal direction 55 of the structural materials 2 and 1, further, as shown in FIG. 5C, the structural materials 2 and 1 are further provided. Additional bolt joints may be provided along the longitudinal direction 55. For example, in FIG. 5C, bolt joints are added one above and one below along the upper and lower edges of the structural members 1 and 2 (so as to form a U shape) with respect to the one in FIG. 3 (FIG. 5C). The same applies to 6A).

(3) Specifically, the projecting portions 32, 42 have the base portions 31, 41 fixed to one side portion (A side or B side) of the end portions 1a, 2a of the structural members 1 and 2, and the tip end side portion. May be composed of connecting members 3 and 4 projecting from the ends 1a and 2a of the structural members 1 and 2 in the longitudinal direction 55.
Then, the two structural members 1 and 2 are arranged close to each other with the ends 1a and 2a facing each other.
Further, the two projecting portions 32, 42 are overlapped on the side portions (A side or B side) of the end portions 2a, 1a of the other structural members 2, 1 so as to be located on opposite sides of each other. The structural members 1 and 2 may be connected in a straight line.

Here, the connecting members 3 and 4 are fixed to the structural members 1 and 2 with the substantially half portion in the longitudinal direction 55 as the base portions 31 and 41, and the remaining approximately half portion (tip side portion) is the protruding portions 32 and 42. Is preferable. By doing so, when the ends 1a and 2a of the structural members 1 and 2 are substantially butted with each other, as shown in the vertical cross-sectional view of FIG. 2, the structure is formed with the bases 31 and 41 of the connecting members 3 and 4. It is possible to triple-layer the side portions of the materials 1 and 2 and the protruding portions 42 and 32 of the connecting members 4 and 3 on the mating side and bolt-join (co-tighten) them at once with a passing bolt (triple joining). ). As a result, the bases 31 and 41 of the connecting members 3 and 4 and the side portions of the structural members 1 and 2 are bolted together.

On the other hand, structurally, for example, as shown in FIGS. 7A (7C), the bases 31 and 41 can be made smaller than half of the connecting members 3 and 4. In this case, the side portions of the structural members 1 and 2 and the protruding portions 42 and 32 of the connecting members 4 and 3 on the mating side are doubly overlapped to form a bolt joint (double joint). Therefore, the bases 31 and 41 of the connecting members 3 and 4 and the side portions of the structural members 1 and 2 are not bolted (co-tightened). Therefore, for shear joining, for example, the welded portion 75a as described later. ~ 75c etc. are required. Further, if necessary, a welded portion 75d such as plug welding or spot welding may be provided.

The linear connection between the two structural members 1 and 2 as described above can be used for the connection between the beams, the connection between the columns, and the like.

The close arrangement with the ends 1a and 2a facing each other means that the ends 1a and 2a of the structural members 1 and 2 are substantially butted with each other without shifting the core.

A gap s (see FIG. 3) in the longitudinal direction 55 is provided between the ends 1a and 2a of the two structural members 1 and 2 in order to provide a welded portion 75c, but the required connection strength is secured. In order to do so, it is preferable to make the gap s as small as possible. Therefore, the gap s may be set to the extent that the relief allowance due to the accuracy error is added to the size of the welded portion 75c.

(4) As shown in FIG. 2, the projecting portions 32, 42 (or the connecting members 3, 4) preferably have a smaller cross section than the structural members 1 and 2.

Here, the protrusions 32 and 42 can secure the connection strength between the structural members 1 and 2 even if the cross section of the projecting portions 32 and 42 is reduced to about half of that of the structural members 1 and 2.

(5) Further, as shown in FIGS. 3 (7C), the projecting portions 32, 42 (or the connecting members 3, 4) are integrally fixed to the side portions of the structural members 1 and 2 by welding. (For example, welded portions 75a to 75d) may be used.

Here, the welded portions 75a to 75d can be made by welding the structural members 1 and 2 and the base portions 31 and 41 of the connecting members 3 and 4 by fillet welding, plug welding, spot welding, or the like. Specific welding will be described later.

The structural members 1 and 2 and the protrusions 32 and 42 (or the connecting members 3 and 4) can be, for example, flat plates or square cylinders, respectively, but the following are preferable. To do.

(6) As shown in FIG. 2, the structural members 1 and 2 are H-shaped steels having a pair of flange portions 62 (both flanges) extending to both sides in the direction perpendicular to the surface on both side edges of the web portion 61. Is preferable.
Further, the projecting portions 32, 42 (or connecting members 3, 4) have a pair of flange portions 66 (single flanges) extending to one side in the direction perpendicular to the surface on both side edges of the web portion 65 (C-shaped cross section). ) It is preferable to use light channel steel or the like.
Then, it is preferable that the projecting portions 32, 42 (or the connecting members 3, 4) can be accommodated in the side portions (A side or B side) of the structural members 1 and 2.

Here, the two structural members 1 and 2 made of H-shaped steel are connected at least in a state where the outer surfaces of the flange portions 62 are flush with each other. In the case of the structural members 1 and 2 extending in the horizontal direction and the connecting members 3 and 4, the web portions 61 and 65 serve as surfaces facing in the vertical direction, and the side edges of the web portions 61 and 65 serve as upper and lower edges. .. Further, the flange portions 62 and 66 are surfaces extending in the horizontal direction. Then, when such structural members 1 and 2 are connected, the upper and lower surfaces (outer surface of the flange portion 62) of the structural members 1 and 2 become a flat continuous surface.

The connecting members 3 and 4 have a size that can be accommodated inside the concave spaces formed on both sides of the structural members 1 and 2 made of H-shaped steel. The connecting members 3 and 4 are the same as or smaller than the inside of the concave spaces on both sides of the structural members 1 and 2 made of H-shaped steel. It should be noted that the connecting members 3 and 4 can be housed in the side portions of the structural members 1 and 2 made of H-shaped steel without using light channel steel.

When the structural members 1 and 2 are made of H-shaped steel and the connecting members 3 and 4 are made of light channel steel or the like, the base portions 31 and 41 of the connecting members 3 and 4 and the side portions of the structural members 1 and 2 ( The welded portions 75a to 75c by fillet welding with the A side or the B side) are as follows.

That is, as shown in FIG. 3, first, a first welded portion 75a in which the flange portions 62 and 66 are welded to each other along the edge portion in the longitudinal direction 55 is provided. Next, if necessary, the second welded portion 75b in which the web portions 61, 65 are welded to each other along the edge portion of the web portion 65 in the width direction (vertical direction in the figure) (of the web portions 61, 65) is formed. Make sure to provide it. If necessary, a third welded portion 75c in which the flange portions 62, 66 are welded together along the edge portion of the flange portion 66 in the width direction (direction perpendicular to the paper surface) (of the flange portions 62, 66). To be provided.

The first welded portion 75a and the third welded portion 75c are mainly effective for transmitting moments. Further, the second welded portion 75b can also be used for transmitting the moment. Then, the bases 31 and 41 of the connecting members 3 and 4 described above, the web portions 61 of the structural materials 1 and 2 and the protruding portions 42 and 32 of the connecting members 4 and 3 on the mating side are triple-layered and threaded with bolts. When bolting (co-tightening) at once, the shearing force is transmitted by bolting. The first welded portion 75a, the second welded portion 75b, and the third welded portion 75c have priority in terms of strength, and the first welded portion 75a is indispensable. The welded portion 75b and the third welded portion 75c may be provided as needed.

Further, it is further necessary when the web portions 61 of the structural materials 1 and 2 and the protruding portions 42 and 32 of the connecting members 4 and 3 on the mating side are doubly overlapped and bolted as shown in FIGS. 7A (7C). Depending on the situation, the welded portion 75d by plug welding, spot welding, etc. as described above is performed. It is also possible to replace the welded portion 75d by plug welding or spot welding with the welded portions 75a to 75c by fillet welding or the like.

When the welded portions 75a to 75c by welding are used as fillet welded portions along the edges of the web portions 65 and the flange portions 66 of the bases 31 and 41 of the connecting members 3 and 4, the corners are formed. In the fillet welding, a step corresponding to the plate thickness of the web portion 65 that occurs between the edge portion of the web portion 65 and the web portion 61, and the flange portion 66 that occurs between the edge portion of the flange portion 66 and the flange portion 62. It is preferable to use a step corresponding to the plate thickness. At this time, the flange portions 66 of the connecting members 3 and 4 are at least equal to or larger than the width of the bead so that the fillet weld bead does not protrude from the concave space of the structural material 1 and 2. It is preferably shorter than the flange portion 62 of 2. By making the welded portions 75a to 75c of the fillet weld equal to the plate thickness of the web portion 65 and the flange portion 66 in this way, the welded portions 75a to 75c are maximized and the flange portion with respect to the flange portion 62. Since the pulling dimension of 66 can also be shortened, it is structurally advantageous. Further, when performing partial penetration welding or the like, a groove is processed between the edges of the web portions 61 and 65 and between the edges of the flange portions 62 and 66.

(7) High-strength bolts 77 (or rivets) may be used (as fasteners 51) for bolt joining.
The high-strength bolt 77 (or rivet) is at least within the side portions (A side or B side) of the structural members 1 and 2, the web portions 61 of the structural members 1 and 2, and the protruding portions 42 and 32 of the other party. It may be installed so as to penetrate the web portion 61 in the direction perpendicular to the surface of the web portion 61.
Alternatively, the high-strength bolt 77 (or rivet) is connected to the web portions 61 of the structural members 1 and 2 and the protruding portions 32, 42 (or connections) in the side portions (A side or B side) of the structural members 1 and 2. It may be installed so as to penetrate between the base portions 31 and 41 of the members 3 and 4) and the tip portions of the protruding portions 42 and 32 of the other party in the direction perpendicular to the surface of the web portion 61.

Here, the high-strength bolt 77 is a fastener 51 manufactured so that it can withstand a high tensile force with high strength and can have a uniform tightening force. Further, the rivet can be used for the same purpose as the high-strength bolt 77. By using the high-strength bolt 77 and the rivet, it is possible to eliminate the need to fasten the flange portions 62 and 66 with the fastener 51 in terms of strength.

Further, by using the high-strength bolts 77 and rivets, it can be expected that the number of fasteners 51 used for the bolt joints between the web portions 61 and 65 can be reduced as compared with the case where ordinary bolts are used.

For example, in FIG. 3, a total of six high-strength bolts 77 and the like (hereinafter, “high-strength bolts 77 and the like” include rivets), three on each side for each web portion 65 of the connecting members 3 and 4. However, for example, as shown in FIG. 5A, a total of two high-strength bolts 77, one on each side, are used, or as shown in FIG. 5B, two on each side. The number of high-strength bolts 77 and the like may be reduced by using a total of four high-strength bolts 77 and the like.

At this time, the number of high-strength bolts 77 and the like can be reduced by increasing the diameter. That is, it is possible to reduce the number of bolt joints by using a large-diameter high-strength bolt 77 or the like instead of using a large number of small-diameter high-strength bolts 77 or the like. It is preferable that the high-strength bolts 77 and the like used in each case have one type of size.

Then, for example, as shown in FIGS. 3 and 5B, when a plurality of high-strength bolts 77 and the like are formed on each side, the high-strength bolts 77 and the like are provided in the width directions of the web portions 61 and 65 (in the figure, It is preferable to install them as far apart as possible from the vertical direction). By increasing the distance (in the vertical direction in the figure) between the high-strength bolts 77 and the like in this way, it is possible to obtain a larger yield strength against the moment Mb (see FIG. 10B) generated at the joint. Become.

By the way, what is effective for the moment F1 and the shearing force F2 acting on the structural materials 1 and 2 is to widen the separation distance (distance e) between the tips (joints) of the protruding portions 32 and 42, which is a high force. The fastener 51 such as the bolt 77 needs to be capable of countering the shearing force Qb between the joints and the moment Mb of the joints. Then, by installing the high-strength bolt 77 or the like at a large distance from the width direction (vertical direction in the drawing) of the web portions 61 and 65, a large couple against the moment Mb of the joint portion can be obtained. Then, when the couple is insufficient only by arranging the high-strength bolts 77 in the vertical direction or vertically, as shown in FIGS. 5C and 6A, the high-strength is along the vertical positions of the web portions 61 and 65. Couples can be reinforced by adding bolts 77 and the like. Further, the shearing force Qb between the joints can be countered by the number of high-strength bolts 77 in the vertical direction or vertically arranged.

(8) With respect to the side portion (A side or B side) of the web portion 61 of the structural members 1 and 2 made of H-shaped steel, the connecting members 3 and 4 made of light channel steel or the like have the web portion 61, The 65s and the flanges 62 and 66 may be fitted (or inserted) so as to be in surface contact with each other.

Here, the connecting members 3 and 4 made of light channel steel and the like have a size and shape substantially equal to (or slightly smaller than) the inside of the concave space on both sides of the structural members 1 and 2 made of H-shaped steel. Will be done. By doing so, while ensuring an escape allowance for dimensional errors, light channel steel is used with respect to the side portions (A side or B side) of the web portions 61 of the structural members 1 and 2 which are H-section steels. It is possible to fit the connecting members 3 and 4 as such by inserting the protruding portions 32 and 42. By this fitting, almost the entire contact portion is formed, including the web portions 61 and 65 between the outer surface of the connecting members 3 and 4 and the inner surface of the concave space on the side portions of the structural members 1 and 2. Therefore, it becomes a guide function with good connection accuracy between the structural materials 1 and 2. The contact surfaces of the web portions 61 and 65 are the surfaces of the web portions 61 of the structural members 1 and 2 and the bases 31 of the connecting members 3 and 4, especially in the case of triple joining using high-strength bolts 77. , 41 and the bolt tightening surfaces of the protrusions 32 and 42 are friction surfaces on which frictional force is generated (note that such friction surfaces are unnecessary in the case of bearing pressure joints such as rivet joints).

It should be noted that, with respect to the side portion (A side or B side) of the web portion 61 of the structural members 1 and 2 made of H-shaped steel, the protruding portions 32, 42 of the connecting members 3 and 4 made of light channel steel or the like. In order to facilitate insertion, the corners of the protruding portions 32 and 42 may be appropriately provided with rounded portions for calling.

(9) Then, the structural members 1 and 2 may be connected by the above-mentioned joint structure to construct a building structure.
Here, the above-mentioned joint structure may be provided at least at one place. A building structure is the framework of a building.

<Action> The action of this example is as follows.

In the joint structure of this embodiment, as shown in FIG. 8A, two rods 81 and 82 are positioned at two tip portions separated from each other by a distance e in a state where the tip portions are overlapped in the longitudinal direction. It is possible to have basically the same connection structure as the connection method in which the bending moment F1 and the shearing force F2 are transmitted to each other by joining (joining portions 83, 84).

Then, the bending moment generated in the two rods 81 and 82 when the two rods 81 and 82 are simply bent is as shown in the moment diagram of FIG. 8B. According to this figure, a pin that supports both ends of the connected rods 81 and 82 from below, applies a force P from above to the middle portion of the two rods 81 and 82, and does not generate a moment at the joints 83 and 84. Assuming joining, a bending moment as shown in the figure is generated. At this time, in the section of the distance e between the two joints 83 and 84, the bending moment generated in each of the rods 81 and 82 gradually decreases toward the tip side, and in the central portion of the section of the distance e. , The bending moment is halved. Therefore, in the section of the distance e, the required connection strength can be secured even if the cross sections of the rods 81 and 82 are gradually reduced. Alternatively, the required connection strength can be secured even if the cross sections of the rods 81 and 82 are halved beyond the central portion of the section of the distance e.

Therefore, as shown in FIG. 9, in order to successfully apply the method of connecting the two rods 81 and 82 to the connecting portion between the structural members 1 and 2, first, the structure is formed at the central portion of the section of the distance e. The ends 1a and 2a of the materials 1 and 2a are arranged so as to be close to butt. Then, the protruding portions 32, 42 having a small cross section are extended from one side surface of the end portions 1a, 2a of the structural members 1 and 2, and bolted at the positions of the two tip portions of the protruding portions 32, 42 separated from each other. Make it a structure. In this way, if the method of connecting the two rods 81 and 82 is simply applied to the connection of the structural members 1 and 2, the example of FIG. 1 (to FIG. 4) is obtained.

At this time, a gap s may be provided between the ends 1a and 2a of the structural members 1 and 2. However, as described above, the gap s is preferably made as small as possible.

Further, as shown in FIGS. 3 and 5B, the number of fasteners 51 (high-strength bolts 77) used at the two tips of the protrusions 32 and 42 that are separated from each other is increased, and the intervals are set in the vertical direction in the drawing. Enlarge. Then, as shown in FIG. 10A (FIG. 10B), the moment Mb generated in the joint portions 83 and 84 can be transmitted by the plurality of fasteners 51, so that the broken line generated in the section indicated by the distance e in the figure. Since the gradient of the bending moment F1 indicated by m becomes smaller as shown by the solid line n and the shearing force Qb decreases, the shearing force applied to the protruding portions 32 and 42 can be reduced, which is structurally advantageous.

<Effect> According to this embodiment, the following effects can be obtained.

(Effect 1) It is assumed that each of the structural members 1 and 2 integrally has protruding portions 32 and 42 protruding from one side portion (A side or B side).
Further, the two structural members 1 and 2 are brought close to each other, and the protruding portions 32 and 42 are superposed on the side portions (A side or B side) of the other structural members 2 and 1 so as to be located on opposite sides of each other. Arranged so as to.
Then, the protrusions 32 and 42 and the side portions (A side or B side) of the other structural members 2 and 1 are fixed by bolt joints, respectively.

This makes it possible to directly connect the two structural members 1 and 2 simply by providing the structural members 1 and 2 with protrusions 32 and 42 (two connecting members 3 and 4) in advance. Become. Therefore, as in the comparative example of FIG. 11, it is possible to eliminate the need to use a large number of attachment plates 300 (8 in FIG. 9) that are separate from the structural materials 100 and 200 for connecting the structural materials 100 and 200. .. As a result, the structural materials 1 and 2 can be reliably connected with a small number of connecting members 3 and 4 and a small number of fasteners 51 as a whole, and the component cost and the construction time can be shortened accordingly. Can be done.

At this time, by adopting a structure in which the projecting portions 32, 42 (connecting members 3, 4) are integrally fixed to one side portion (A side or B side) of the structural members 1 and 2 in advance, the cores are misaligned. It is possible to connect the structural materials 1 and 2 without any steps.

Further, by attaching the projecting portions 32 and 42 (connecting members 3 and 4) to the structural materials 1 and 2 in advance, the structural materials 1 and 2 and the connecting members 3 and 4 can be integrated into one component. It is not necessary to handle the attachment plate 300 as in No. 11, and the on-site construction can be facilitated and the construction time can be shortened. Further, since the structure is as simple as attaching the connecting members 3 and 4 to the side portions (A side or B side) of the structural members 1 and 2 in a protruding state, the end portions 1a and 2a of the structural members 1 and 2a There is no need to process or make a special shape, and there is no need for on-site processing.

Further, since the protruding portions 32 and 42 (connecting members 3 and 4) are fixed to one side (A side or B side) of the structural members 1 and 2, the connecting members 3 and 4 and the bolts The fastener 51 such as the above can be configured so as not to protrude toward the surface side (edge side) of the structural members 1 and 2. Therefore, the joint structure between the structural members 1 and 2 is flat and flush with the outer surface of the flange portion 62 without unevenness or protrusions due to bolts (fasteners 51), attachment plates 300, etc. as shown in FIG. , Looks good.

Therefore, when a building structure is constructed by assembling structural materials 1 and 2 using this joint structure, for example, a flooring material or a wall material installed around the structural materials 1 and 2 and a connecting member are connected. Interference with fasteners 51 such as 3 and 4 and bolts can be eliminated. Further, since the fasteners 51 such as the connecting members 3 and 4 and the bolts do not protrude to the surface side of the structural materials 1 and 2, the floor material and the wall material can be installed in a space-efficient manner, and the indoor space can be installed accordingly. Etc. can be secured widely.

(Effect 2) Bolt joining between the protruding portions 32, 42 and the side portions of the other structural members 2, 1 is performed at least at the positions of the two tip portions of the protruding portions 32, 42, which are separated from each other. You may do so. As a result, the structural members 1 and 2 can be efficiently connected with high strength even with a small number of bolt joints.

(Effect 3) The protrusions 32, 42 are fixed to the side portions (A side or B side) on one side (A side or B side) of the end portions 1a, 2a of the structural materials 1 and 2, and the tip end side portion is the structural material 1. , 2 are composed of connecting members 3 and 4 protruding from the ends 1a and 2a in the longitudinal direction 55. As a result, the projecting portions 32 and 42 can be reliably provided on the structural members 1 and 2.

Further, the two structural members 1 and 2 are brought close to each other with their ends 1a and 2a facing each other, and the other structural members 2 and 1 are placed so that the protruding portions 42 and 32 are located on opposite sides of each other. The two structural members 1 and 2 may be connected in a straight line in a state of being overlapped on the side portions of the end portions 2a and 1a. As a result, the two structural members 1 and 2 can be easily and surely connected in a straight line without causing misalignment or a step.

(Effect 4) The connecting members 3 and 4 may have a cross section smaller than that of the structural members 1 and 2. Even if the cross sections of the connecting members 3 and 4 are reduced in this way, the structural members 1 and 2 can be connected to each other without increasing the shape of the connecting portion while ensuring the required connection strength.

(Effect 5) The protruding portions 32 and 42 are integrally fixed to the side portions (A side or B side) of the structural members 1 and 2 by welding (for example, welded portions 75a to 75d). Specifically, the flange portions 62 and 66 are aligned along the edge portion with the base portions 31 and 41 of the connecting members 3 and 4 housed in the side portions (A side or B side) of the structural members 1 and 2. The first welded portion 75a welded in the longitudinal direction 55 and the second welded portion 75b in which the web portions 61 and 65 are welded together along the edge of the web portion 65 in the width direction (of the web portions 61 and 65). Further, a third welded portion 75c in which the flange portions 62, 66 are welded to each other in the width direction (of the flange portions 62, 66) along the edge portion of the flange portion 66 is provided.

At this time, as shown in FIG. 3, the welding portions 75a, 75a, 75c receive the bending moment F1 generated in the structural materials 1 and 2 (via the connecting members 3 and 4), and the structural materials 2 and 1 on the other side receive the bending moment F1. The shearing force F2 generated in the structural materials 1 and 2 is mainly received by the welded portion 75b, or the bases 31 and 41 of the connecting members 3 and 4 are bolted to the structural materials 1 and 2. When they are joined, the bolt joints function to receive (via the connecting members 3 and 4) and transmit them to the structural materials 1 and 2 on the other side, thereby bending the structural materials 1 and 2 together. The structure can be made strong against F1 and shearing force F2.

Further, the bases 31 and 41 of the connecting members 3 and 4 are housed in the concave space of the side portions (A side or B side) of the structural members 1 and 2 and welded to form the bases of the connecting members 3 and 4. The 31 and 41 can be securely fixed without protruding to the surface side of the structural materials 1 and 2.

Further, by correcting the welding strain of the welded joint portion of the connecting members 3 and 4 to the structural members 1 and 2 in advance, the skeleton accuracy of the building structure constructed by using this joint structure is shown in FIG. It can be improved as compared with the case of the comparative example.

(Effect 6) The structural materials 1 and 2 are made of H-shaped steel, the connecting members 3 and 4 are made of light channel steel and the like, and the protrusions 42 and 32 (or the connecting members 3 and 4) are made of the structural materials 1 and 2. It may be possible to accommodate and arrange it in the side portion (A side or B side). As a result, the connecting members 3 and 4 can be installed in a state of being nested inside the side portions (A side or B side) of the structural members 1 and 2 which are H-shaped steels, and the connecting members 3 and 4 can be installed. The fastener 51 and the like can be housed in the side portions of the structural members 1 and 2 so as not to protrude from the structural members 1 and 2. Then, by using light channel steel or the like for the connecting members 3 and 4, the shape is optimized for installation in the side portions (A side or B side) of the structural members 1 and 2 made of H-shaped steel. be able to. In particular, by installing the light channel steel or the like in a state of being open to the outside inside the H-shaped steel, the fastener 51 can be accommodated inside the light channel steel or the like.

(Effect 7) High-strength bolts 77 (or rivets) may be used for bolt joining. As a result, the structural members 1 and 2 can be firmly bolted together.

Further, a high-strength bolt 77 or the like is placed between at least the web portions 61 of the structural materials 1 and 2 and at least the tip portions of the protruding portions 42 and 32 on the mating side, or with the web portions 61 of the structural materials 1 and 2. , The required connection strength can be obtained by penetrating between the bases 31 and 41 of the connecting members 3 and 4 and at least the tip of the protruding portions 42 and 32 on the mating side, so that the structural materials 1 and 2 can be obtained. And the flanges 62 and 66 of the connecting members 3 and 4 do not need to be bolted, so that high-strength bolts 77 or the like to the surface side (edge side) of the flanges 62 of the structural members 1 and 2 can be used. It is possible to have a connection structure that does not pop out. Since the flange portions 62 and 66 of the structural members 1 and 2 and the connecting members 3 and 4 are not bolted, the height is larger within the range within the side portions (A side or B side) of the structural members 1 and 2. It becomes possible to use a force bolt 77 or the like.

Further, by frictionally joining using the high-strength bolt 77, it is possible to obtain a large clearance between the bolt hole 52 and the high-strength bolt 77, and it is possible to eliminate rattling after the bolt is fastened. Then, by tightening the high-strength bolt 77, the structural members 1 and 2 made of H-shaped steel and the connecting members 3 and 4 made of light channel steel or the like can be attracted to each other and brought into close contact with each other.

(Effect 8) With the connecting members 3 and 4 made of light channel steel or the like inserted into the side parts (A side or B side) of the structural members 1 and 2 made of H-shaped steel, the web part 61, The 65s and the flanges 62 and 66 may be in surface contact with each other. As a result, the cross section of the connecting members 3 and 4 can be enlarged (up to the full side of the structural members 1 and 2). Therefore, the connecting members 3 and 4 can easily secure a cross section having a size required for connecting the structural members 1 and 2.

Further, since the structural members 1 and 2 and the connecting members 3 and 4 are in surface contact with each other, the connecting members 3 and 4 can be easily attached to the structural materials 1 and 2 (bolt joints and welding joints can be facilitated, and welding can be performed. It is possible to secure a sufficient welding length for joining). Therefore, the joint strength between the structural members 1 and 2 and the connecting members 3 and 4 can be increased. Further, by setting the fitting state as described above, it is possible to prevent a step from being generated between the connected structural members 1 and 2.

(Effect 9) According to the building structure of this embodiment, the same effect as that of the joint structure can be obtained.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the embodiments are merely examples of the present invention. Therefore, the present invention is not limited only to the configuration of the embodiment, and it goes without saying that the present invention includes a design change or the like within a range that does not deviate from the gist of the present invention. Further, for example, when a plurality of configurations are included in each embodiment, it goes without saying that possible combinations of these configurations are included even if there is no particular description. Further, when a plurality of examples and modifications are disclosed as those of the present invention in the embodiment, possible combinations of configurations straddling these are included even if there is no particular description. Of course. Further, it goes without saying that the configuration depicted in the drawings is included even if there is no particular description. Furthermore, when there is a term such as "etc.", it is used to mean that it includes the equivalent. In addition, when there are terms such as "almost", "about", and "degree", they are used to mean that they include those with a range and accuracy that are generally accepted.

1 Structural material 1a End 2 Structural material 2a End 3 Connecting member 4 Connecting member 31 Base 41 Base 32 Tip side 42 Tip side 55 Longitudinal 61 Web part 62 Flange part 65 Web part 66 Flange part 77 High-strength bolt e Distance s Gap

Claims (8)

In a joint structure in which two structural materials are connected
Each of the structural members integrally has a protruding portion protruding from only one side of the side portion.
The protrusion is a connecting member fixed integrally as joint before installation on site by welding to one of said side portions of the right and left of the structural member,
The two structural members are brought close to each other, and the protrusions are superposed on the other of the left and right side portions of the other structural material so as to be located on opposite sides of each other.
A joint structure characterized in that each of the protruding portions and the side portion of the other structural member are fixed by bolt joints. In the joint structure according to claim 1,
Bolt joints between each of the protrusions and the side of the other structural material
A joint structure characterized in that at least the positions of the two tip portions of the protruding portions are separated from each other. In the joint structure according to claim 1 or 2.
The projecting portion is composed of the connecting member whose base is fixed to one of the left and right side portions at the end portion of the structural material, and the tip end side portion projects in the longitudinal direction from the end portion of the structural material. ,
The two structural members are arranged close to each other with their ends facing each other, and the left and right sides of the end of the other structural material so that the protruding portions are located on opposite sides of each other. A joint structure characterized in that the two structural members are linearly connected in a state of being overlapped with the other of the portions. In the joint structure according to any one of claims 1 to 3.
The protruding portion has a joint structure having a cross section smaller than that of the structural material. In the joint structure according to any one of claims 1 to 4.
The structural material is an H-section steel having a pair of flange portions extending to both sides in the direction perpendicular to the surface on both side edges of the web portion.
The protruding portion is a channel steel having a pair of flange portions extending to one side in the direction perpendicular to the surface on both side edges of the web portion.
The joint structure is characterized in that the protruding portion can be accommodated in the side portion of the structural material. In the joint structure according to claim 5,
High-strength bolts are used for the bolt joints, and at the same time,
The high-strength bolt penetrates at least in the side portion of the structural material between the web portion of the structural material and the tip end portion of the protruding portion of the other party in the direction perpendicular to the surface of the web portion. A joint structure characterized by being bolted. In the joint structure according to claim 5 or 6.
The connecting member made of channel steel is fitted into the side portion of the web portion of the structural material made of H-shaped steel so that the web portions and the flange portions are in surface contact with each other. A joint structure characterized by being A building structure having a structural material connected by the joint structure according to any one of claims 1 to 7.

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