JP2000087448A - Joint structure of steel structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint structure of a steel structure capable of greatly reducing the number of bolts, eliminating the need to use any special bolts, facilitating assembly operations, and costing low in terms of joints. SOLUTION: Joints 17, 18, 23 and 19, 20, 24 interconnected by fastening means and forming pairs have projecting parts 37, 34, 37a, 34a formed at their respective ends, and have recess parts 35, 36, 35a, 36a formed in connection with the projecting parts 37, 34, 37a, 34a. When the joints 17, 18, 23 and 19, 20, 24 to be paired are interconnected, the projecting parts 34, 34a of the joints 19, 20, 24 on one side can be fitted into the recess parts 35, 35a of the joints 17, 18, 23 on the other side, and when members 11, 12 to be joined are pulled, abutting faces 38, 39, 38a, 39a where the projecting parts 37, 34, 37a, 34a are connected to the recess parts 35, 36, 35a, 36a can make contact with one another.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure of a steel structure used for connecting a steel structure such as a beam or a column of a building steel frame, a tunnel, an underground structure, a machine or the like.

[0002]

2. Description of the Related Art As mechanical joining of steel structures such as beams and columns, the transition from rivet joining to friction joining with high-strength bolts has been about 20 years ago. Friction welding is still commonly used today with welded joints. The joining of the base materials is performed through the splicing plate, the rivet joining is mainly by the shearing force of the rivet, and the friction joining by the high-strength bolt is mainly by the friction force of the high-strength bolt between the base material and the splicing plate. It has a structure that can withstand.

[0003]

However, in the conventional rivet joining and the friction joining using high-strength bolts, there are still the following problems to be solved. Since the rivet joint has a structure that can withstand the shearing force of the rivet, precision is required for machining many rivets and holes to be processed in the base material and the attachment plate, and workability is inferior and production cost is high. . Further, since the friction joining has a structure that can withstand the frictional force of the high-strength bolt between the base material and the attachment plate, a large number of bolts are required, and high-strength bolts are required. Furthermore, in friction welding,
When a jig for joining high-strength bolts cannot be arranged, an opening for bolt tightening is arranged, and one-side bolts (one s) for tightening bolts from one direction are provided.
There is also a problem that an ide bolt is required.

The present invention has been made in view of such circumstances, and the number of bolts can be greatly reduced, there is no need to use special bolts, the assembly work is simple, and the steel structure is inexpensive in joint cost. An object of the present invention is to provide a joint structure for a product.

[0005]

According to the present invention, there is provided a semiconductor device comprising:
In the joint structure of a steel structure according to the present invention, in the joint structure of a steel structure in which a paired joint is attached to a connection portion of a material to be joined and the paired joint is connected by fastening means, the paired joint is A convex portion is formed at the tip portion, and a concave portion is formed by connecting to the convex portion. When the paired joint is connected, the convex portion of one joint can be attached to the concave portion of the other joint. Thus, when the jointed member is pulled, the contact surfaces that connect the convex portion and the concave portion can make surface contact with each other. Claim 2
The joint structure of a steel structure according to claim 1, wherein the joint structure of the steel structure according to claim 1, wherein, when the material to be jointed is compressed, after the tip inclined surface of the convex portion and the concave portion corresponding to the tip inclined surface. Surface contact with the end inclined surface is possible. A joint structure for a steel structure according to a third aspect is the joint structure for a steel structure according to the first or second aspect, wherein a cross-sectional shape of the projection is tapered. The joint structure for a steel structure according to the fourth aspect is the first aspect.
4. In the joint structure for a steel structure according to any one of the above-described items 3, the center position of the contact surface is arranged so as to pass through an axis formed by the jointed members.

A joint structure for a steel structure according to a fifth aspect is the joint structure for a steel structure according to any one of the first to fourth aspects, wherein the paired joint is the same. The joint structure for a steel structure according to claim 6 is any one of claims 1 to 5.
In the joint structure of a steel structure described in the paragraph, the jointed member is a square column or a steel underground continuous wall member, and two or more of the joints to be paired are used. A joint structure for a steel structure according to a seventh aspect is the joint structure for a steel structure according to any one of the first to sixth aspects, wherein the fastening means has a connection bolt that can be fastened from one direction. The joint structure for a steel structure according to claim 8 is the joint structure for a steel structure according to any one of claims 1 to 7, wherein the joint is formed by rolling, casting, forging, or hot extrusion. Consists of mechanical joints manufactured by type.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is an exploded perspective view of a joint structure of a steel structure according to an embodiment of the present invention, FIG. 2 is a front view of a joint structure of the steel structure, and FIG. 3 is a joint structure of the steel structure. 4, FIG. 4 is a detailed view of a flange portion of the joint structure of the steel structure, FIG. 5 is a detailed view of a web portion of the joint structure of the steel structure, and FIGS. Front view and plan view of a joint structure of a steel structure according to another embodiment of the invention,
FIG. 7 is a detailed view of a modification of the joint structure of the steel structure.

As shown in FIG. 1, a joint structure 10 of a steel structure according to an embodiment of the present invention comprises upper and lower flange portions 13 of H-shaped steels 11 and 12 which are examples of a material to be connected. ,
Rolled mechanical joints 17, 18, 19, and 20 which are examples of joints welded to the connection ends of 14 and 15, and 16 and rolling which is an example of joints welded to the connection ends of web portions 21 and 22 As shown in FIGS. 2 to 5, when connected, a pair of a rolled mechanical joint 17 and a rolled mechanical joint 19, and a pair of a rolled mechanical joint 18. And the rolled mechanical joint 20 and the paired rolled mechanical joint 23 and the rolled mechanical joint 24 are connected by connecting bolts 25, 26, and 27, which are high-strength bolts as an example of fastening means. . Hereinafter, these will be described in detail. Note that the same components are denoted by the same reference numerals, and detailed description is omitted.

The rolled mechanical joints 17 to 20 are identical, and the connection between the rolled mechanical joint 17 and the rolled mechanical joint 19 is the same as the connection between the rolled mechanical joint 18 and the rolled mechanical joint 20. Therefore, only the rolled mechanical joint 17 and the rolled mechanical joint 19 will be described in detail below. The same machine is used for the rolled mechanical joint 17 and the rolled mechanical joint 19, and the widths thereof are the upper and lower flange portions 13, 14, and 1
The width W is 5 or 16. For example, the material is made of a steel plate for a welding structure (SM400 and SM490), and is formed by a rolling roll without machining. At the base end side of the rolled mechanical joint 17, a welded portion 33 to be welded 31 and 32 to the flange upper surface 29 and the flange end surface 30 of the upper flange portion 13 is provided. A concave portion 35 is formed in which the convex portion 34 at the distal end of the rolled mechanical joint 19 is fitted.
Are formed.

As shown in FIG. 4, a contact surface (or step surface) 3 connecting the convex portion 37 and the concave portion 35 of the rolled mechanical joint 17 is formed.
8, and a contact surface (or a step surface) 39 connecting the convex portion 34 and the concave portion 36 of the rolling-type mechanical joint 19 are in surface contact with the inclined surface 40 (41) of the convex portion 37 (34). Recess 36
(35) A predetermined gap G is formed between the rear end inclined surface 42 (43) and the rear end inclined surface 42 (43).
(For example, about 1 to 5 mm). Like the welded portion 33 of the rolled mechanical joint 17, the upper flange portion 1 is provided at the base 44 side welded portion 44 of the rolled mechanical joint 19.
5 is welded to the flange lower surface 45 and the flange end surface 46.
7, 48 are constructed. In addition, the contact surface 38 which makes surface contact,
The center position C of 39 is disposed so as to pass through the axis m of the upper flange portion 13 and the upper flange portion 15. further,
The washer 49 and the nut 5 are provided on the rolled mechanical joints 17 and 19.
The insertion holes 51 and 52 through which the plurality of connection bolts 25 are connected through the “0” are formed, and the positions of the insertion holes 51 and 52 are substantially at the centers of the convex portions 37 and 34 and the concave portions 35 and 36 in cross-sectional view. I'm trying to come. When the rolling type mechanical joints 17 and 19 are connected by the connecting bolt 25 and the like, the convex portions 37 and
The crest of 34 is in contact with the valleys of the recesses 36 and 35. As shown in FIGS. 1 and 2, scallops 28 for welding are formed at the ends of the webs 21 and 22 to which the welds 33 and 44 of the rolled mechanical joints 18 and 19 are attached.

Accordingly, the axial center m is
When a tensile load acts in the direction, the rolling mechanical joint 17,
19 receives a tensile load via the welded portions 33 and 44, respectively, and receives a contact pressure corresponding to the tensile load between the contact surfaces 38 and 39, and the projections 37 and 34 have arrows a and b in FIG.
The shearing force indicated by acts on the projections 37, 34.
The cross-sectional area that bears the shearing force can be made large, so that the joint strength can be secured. On the other hand, the upper flange portions 13, 1
5, when a compressive load is applied in the axial center m direction, the contact surface 3
8 and 39 are separated from each other, and the front inclined surface (or contact surface) 40 (41) of the convex portion 37 (34) and the rear inclined surface (or contact surface) 42 (43) of the concave portion 36 (35). Since the gap G becomes zero and comes into contact, the front end inclined surface 40 (41) and the rear end inclined surface 42 (43) receive a surface pressure, and the welded portions 33 and 44 are indicated by arrows d and e in FIG. Shear force will act. For each of the above-mentioned shearing forces, the convex portions 34, 3
7 and the welded portions 33 and 44 have a shear key type structure capable of securing a large cross-sectional area for receiving the shearing force, so that the joint efficiency can be improved.

FIG. 5 shows a web portion 2 of H-section steels 11 and 12.
1 and 22 are connected by a roll-type mechanical joint 23 and a roll-type mechanical joint 24, and are basically the same as the connections of the lower flange portions 13, 14, 15 and 16 described above. Are denoted by the same reference numerals with a appended thereto, and detailed description thereof will be omitted. Here, reference numeral 29a indicates the front surface of the web, and reference numeral 45a indicates the back surface of the web.

Therefore, when a tensile load acts on the web portions 21 and 22 in the direction of the axis m, the rolling mechanical joints 23 and 24
Is applied with a tensile load via the welded portions 33a and 44a, respectively, and receives a surface pressure corresponding to the tensile load between the contact surfaces 38a and 39a, and the convex portions 37a and 34a are indicated by arrows f and g in FIG. The shearing force shown in FIG.
Since the cross-sectional area which bears the shearing force of 7a and 34a can be increased, the joint strength can be secured. On the other hand, when a compressive load acts on the web portions 21 and 22 in the direction of the axis m, the contact surfaces 38a and 39a separate and the convex portions 37a (34)
a) the inclined surface 40a (41a) and the concave portion 36a (35).
a) Since the gap Ga between the rear end inclined surface 42a (43a) and the rear end inclined surface 42a (43a) becomes zero, the surface is contacted by the front end inclined surface 40a (41a) and the rear end inclined surface 42a (43a), and the welding portion 33a is received. , 44a are subjected to shearing forces indicated by arrows h and i in FIG. Therefore, like the upper and lower flange portions 13, 15, 14, 16, the web portions 21, 22 are provided.
Also, the joint efficiency can be improved because of the shear key type structure that can secure a large cross-sectional area for receiving the shear force of the projections 34a and 37a and the welded portions 33a and 44a for each shear force. Connecting bolts 25, 26, 2
7 uses high-strength bolts made of, for example, HT10 (M16, 20, 22) to minimize the number of bolts as much as possible, thereby simplifying machining and mounting work.

Next, a method of joining H-section steels 11 and 12 using the joint structure 10 for a steel structure according to one embodiment of the present invention will be described. First, as shown in FIGS.
Rolled mechanical joints 17 and 18 are attached to the upper and lower flange portions 13 and 14 of the section steel 11 via welds 31 and 32, and a rolled mechanical joint 23 is attached to the web portion 21 via welds 31a and 32a. The upper and lower flanges 15, 1
6, the rolled mechanical joints 19 and 20 are welded 47 and 48, and the rolled mechanical joint 24 is welded to the web portion 22.
a, 48a.

The H-shaped steel 11 to which the rolled mechanical joints 17, 18, and 23 have been welded is applied to the rolled mechanical joints 19, 20, and
The H-shaped steel 12 to which the H-shaped steel 24 is welded is located in the Z direction at an upper position, about lower than the thickness T of the lower flange portions 13 and 14 and in the Y direction at a position rearward about the thickness t of the web portions 21 and 22. In the X direction from the set state, the respective convex portions 37, 34 and 37 of the corresponding rolled mechanical joints 17, 19, the corresponding rolled mechanical joints 18, 20 and the corresponding rolled mechanical joints 23, 24
a, 34a into which the concave portions 36, 35 and 36a, 35 fit.
It moves to the position facing a. Thereafter, the H-section steel 12 is raised in the Z direction, and the convex portions 34 and 37 are respectively formed in the concave portions 3.
5, 36 are fitted. Further, the H-shaped steel 12 is moved forward in the Y direction, and the convex portion 34a and the concave portion 3 of the rolling-type mechanical joint 24 are moved.
6a is fitted into the concave portion 35a and the convex portion 37a of the rolling mechanical joint 23. In this state, the rolling mechanical joints 17, 19,
And the rolling mechanical joints 18 and 20 are connected with connecting bolts 25 and 26.
And the rolled mechanical joints 23 and 24 are firmly connected by the connecting bolts 27 to complete the joint work of the H-shaped steels 11 and 12.

Therefore, in the method of joining H-section steels 11 and 12 using the joint structure 10 of a steel structure, the H-sections are formed by the contact surfaces of the corresponding rolled mechanical joints or the inclined front and rear surfaces. Since it is configured to cope with the compressive or tensile load acting on the steels 11 and 12, high joint efficiency can be reliably exhibited. As a result, the number of connecting bolts can be greatly reduced, and the weight of the rolled mechanical joint that replaces the conventional splicing plate can be significantly reduced. At the same time, assembly is simple, work efficiency is improved, and joint costs are reduced. Is achieved. In addition, H-section steel 1
As the joint methods 1 and 12, the same level is set in the Z direction.
After arranging the rolled mechanical joint 19 of the section steel 12 in the Y direction of the rolled mechanical joint 17 of the H section steel 11, the H section steel 12 is horizontally moved in the Y direction to thereby provide the rolled mechanical joint 19. Can be fitted into the concave portion 35 and the convex portion 37 of the rolling-type mechanical joint 17.

FIG. 6 shows a joint structure 60 for a steel structure according to another embodiment of the present invention. In addition, about the component similar to the joint structure 10 of a steel structure, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted. In a joint structure 60 of a steel structure, a case is shown in which one end of an H-shaped steel 63 is connected to a flange portion 62 of an H-shaped steel 61 arranged vertically, and a rolling type welded to the H-shaped steel 63 is shown. Mechanical coupling 17
Rolled mechanical joints 19a, 20a, 24 in which a, 18a, and 23a are welded to flange portions 62 of H-section steel 61, respectively.
It is configured to be connected to a. The joint method of the H-shaped steel members 61 and 63 using the joint structure 60 of the steel structure is substantially the same as the joint method of the H-shaped steel members 11 and 12 using the joint structure 10 of the steel structure described above. Is omitted. Therefore, in the joint structure 60 of a steel structure, the same operation and effect as those of the joint structure 10 of a steel structure described above are exhibited.

In the above embodiment, the shape of the contact surface of the convex portion is tapered, while the shape of the corresponding contact surface of the concave portion is tapered, but if necessary, the shape may be reversed. You can also. In addition, the shape of the front inclined surface of the convex portion is tapered, while the shape of the rear inclined surface of the corresponding concave portion is widened. However, if necessary, regardless of the shape of the contact surface, the opposite shape is used. It can also be. The center position C of the contact surfaces 38 and 39 that make surface contact is the upper (lower) flange 1
Although it passes through the axis m of 3 (14) and 15 (16), the center position C can be decentered from the axis m if necessary. Although the rolled mechanical joints to be paired were the same, depending on the situation, for example, as shown in FIG. 7, in order to smooth the outer surface 64, only the shape of the mounting portion of the convex portion and the concave portion was the same, The other portions (the backs 66 and 67 of the projections and the recesses and the welds 68 and 69) may have different shapes. In addition, the code | symbol 65 represents an inner surface side.

In the embodiment, the case where the H-shaped steels are connected in the longitudinal direction or the H-shaped steels are connected in the orthogonal direction has been described. However, the H-shaped steels are connected by being inclined at an arbitrary angle. Also applicable to cases. H-shaped steel was used as a jointed material to be connected, but is not limited thereto.
The present invention is also applicable to connection between shaped steel members such as I-shaped steel and angle iron, and between plate materials such as thick plates. Further, the present invention is not limited to the connection between base materials of the same type (shape and size), and can be applied to the connection of different types of jointed materials (for example, a combination of an H-section steel and a channel steel). Further, as the material to be jointed, a square column, a steel underground continuous wall member, or the like may be used, and two or more joints to be paired may be used.

As the joint, a roll-type mechanical joint formed by a rolling roll without machining is used, but it can be manufactured by casting, forging, or hot extrusion. Further, although the description has been made by limiting the material of the jointed member to steel, the present invention can be applied to materials other than steel, such as wood, non-ferrous metals, and plastics, depending on the situation. Although a high-strength bolt is used as the connection bolt, a normal bolt whose strength is increased by plating may be used. The tightening of the rolling mechanical joints is performed by the connecting bolt and the nut. However, the nut may be welded to one of the rolling mechanical joints in advance, and the connecting bolt may be screwed to the nut to be connected. If necessary, a tapped hole may be previously formed in one of the rolled mechanical joints, and a connection bolt may be screwed into the tapped hole. According to the above method, the setting position of the fastening means of the connecting bolt can be set in one direction, so that the connecting workability is improved.

[0021]

In the joint structure for a steel structure according to any one of the first to eighth aspects, the paired joint has a convex portion at the tip end and a concave portion connected to the convex portion. Since the convex part of the joint on one side can be attached to the concave part of the joint on the other side, and the abutting surfaces (or step surfaces) can come into surface contact with each other when the workpiece is pulled, the surface pressure of the abutting surfaces And a large cross-sectional area capable of bearing the shearing force of the convex portion. Therefore, high joint efficiency can be reliably exhibited, so that the number of connecting bolts can be significantly reduced, the weight of the joint replacing the conventional contact plate can be significantly reduced, and the assembling is simple and the work efficiency is low. And joint costs are reduced. In particular, in the joint structure for a steel structure according to the second aspect, when the material to be jointed is compressed, the front inclined surface of the convex portion and the rear inclined surface of the concave portion corresponding to the distal inclined surface can make surface contact. In particular, high joint efficiency can be exhibited during compression. In the joint structure for a steel structure according to claim 3,
Since the cross-sectional shape of the convex portion is tapered, mounting of the joint is facilitated and workability is improved, and the notch coefficient at both ends of the valley of the concave portion can be reduced, so that the joint efficiency can be maintained high.

In the joint structure for a steel structure according to the fourth aspect, since the center position of the contact surface is disposed so as to pass through the axis formed by the members to be joined, the joint at the time of tension and compression is formed. Since the eccentric moment generated in the joint is small, high joint efficiency can be exhibited. In the joint structure for a steel structure according to the fifth aspect, the joints to be paired are the same, so that the joints can be manufactured easily and inexpensively. In the joint structure for a steel structure according to claim 6, the jointed material is a square column or a steel underground continuous wall member, and two or more pairs of joints are used, so that the joint efficiency of the jointed material is increased. it can. In the joint structure for a steel structure according to the seventh aspect, since the fastening means has the connecting bolt capable of being fastened from one direction, the fastening operation is facilitated. In the joint structure for a steel structure according to claim 8,
Since the joint is made of a mechanical joint manufactured by a rolling method, a casting method, a forging method or a hot extrusion molding method, the joint can be manufactured easily and inexpensively.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a joint structure of a steel structure according to an embodiment of the present invention.

FIG. 2 is a front view of a joint structure of the steel structure.

FIG. 3 is a plan view of a joint structure of the steel structure.

FIG. 4 is a detailed view of a flange portion of the joint structure of the steel structure.

FIG. 5 is a detailed view of a web portion of the joint structure of the steel structure.

FIGS. 6A and 6B are a front view and a plan view of a joint structure of a steel structure according to another embodiment of the present invention, respectively.

FIG. 7 is a detailed view of a modification of the joint structure of the steel structure.

[Explanation of symbols]

Reference Signs List 10 Joint structure of steel structure 11 H-section steel (joint joint) 12 H-section steel (joint joint) 13 Upper flange section 14 Lower flange section 15 Upper flange section 16 Lower flange section 17 Rolling mechanical joint (joint) 17a Rolled mechanical joint (joint) 18 Rolled mechanical joint (joint) 18a Rolled mechanical joint (joint) 19 Rolled mechanical joint (joint) 19a Rolled mechanical joint (joint) 20 Rolled mechanical joint (joint) 20a Rolled type Mechanical joint (joint) 21 Web part 22 Web part 23 Rolled mechanical joint (joint) 23a Rolled mechanical joint (joint) 24 Rolled mechanical joint (joint) 24a Rolled mechanical joint (joint) 25 Connecting bolt (fastening means) 26 connecting bolt (fastening means) 27 connecting bolt (fastening means) 28 scallops 29 flange upper surface 29a web surface 30 flange end surface 30a web End face 31 welding 31a welding 32 welding 32a welding 33 welding part 33a welding part 34 convex part 34a convex part 35 concave part 35a concave part 36 concave part 36a concave part 37 convex part 37a convex part 38 abutment surface (step surface) 38a abutment surface (step surface) ) 39 Contact surface (step surface) 39a Contact surface (step surface) 40 Tip inclined surface (contact surface) 40a Tip inclined surface (contact surface) 41 Tip inclined surface (contact surface) 41a Tip inclined surface (contact surface) Contact surface) 42 rear end inclined surface (contact surface) 42a rear end inclined surface (contact surface) 43 rear end inclined surface (contact surface) 43a rear end inclined surface (contact surface) 44 welded portion 44a welded portion 45 Flange lower surface 45a Web back surface 46 Flange end surface 46a Web end surface 47 Weld 47a Weld 48 Weld 48a Weld 49 Washer 49a Washer 50 Nut 50a Nut 51 Insertion hole 51a Insertion hole 52 Insertion Through-hole 52a Insertion hole 60 Joint structure of steel structure 61 H-section steel (material to be joined) 62 Flange 63 H-section steel (material to be joined) 64 Outer side 65 Inner side 66 Back 67 Back 68 Welded part 69 Welded part

Continued on the front page (72) Inventor Yoichiro Shibata 5-89-66-401 F-term (reference) 2E125 AA14 AB01 AC15 AG57 BA55 BB02 BB16 BB22 BB29 BB31 BB32 BB33 BC06 BC07 BC08 BE01 BE05 BF05 BF08 CA05 CA14 CA91 EA34 3J001 AA03 BA00 DB04 EA00

Claims (8)

[Claims] 1. A joint structure of a steel structure in which a pair of joints is attached to a connection portion of a material to be joined and the pair of joints are connected by fastening means, wherein the pair of joints is convex at a tip end. A part is formed, a concave part is formed by connecting to the convex part, and when the paired joint is connected, the convex part of one joint can be attached to the concave part of the other joint; A joint structure for a steel structure, wherein a contact surface connecting the convex portion and the concave portion can make surface contact with each other when the material is pulled. 2. The steel structure according to claim 1, wherein, when the jointed member is compressed, a front inclined surface of the convex portion and a rear inclined surface of the concave portion corresponding to the front inclined surface can make surface contact. Joint structure. 3. The joint structure for a steel structure according to claim 1, wherein a cross-sectional shape of the convex portion is tapered. 4. The steel structure according to claim 1, wherein a center position of the contact surface is arranged so as to pass through an axis formed by the jointed members. Joint structure. 5. The pair of joints being identical.
The joint structure of a steel structure according to any one of claims 4 to 4. 6. The steel structure according to claim 1, wherein the jointed member is a square column or a steel underground continuous wall member, and two or more joints are used as the pair. Joint structure. 7. The joint structure for a steel structure according to claim 1, wherein said fastening means has a connection bolt capable of being fastened from one direction. 8. The joint structure for a steel structure according to claim 1, wherein the joint comprises a mechanical joint manufactured by a rolling, casting, forging, or hot extrusion molding method.