JPH0617486A - Joint structure for steel plate and its jointing method - Google Patents

Abstract

PURPOSE:To increase the strength of the joint portion of steel plates with a simple structure, simplify the joint, and joint the steel plates at the site. CONSTITUTION:Many flat protruded stripes 12, 12.... are formed at a constant interval in the length direction continuously in the width direction on both faces of a steel plate 10. Irregular portions 14 are formed by the protruded stripes 12, 12.... The width (a) of each protruded stripe 12 is made nearly equal to the width (b) of the groove sections 12a formed between the adjacent protruded stripes 12, 12. The protruded stripes 12 of one of the steel plates 10, 10 to be jointed are nearly closely engaged with the groove sections 12a of the opposite side. The outside of the joint portion of the steel plates 10, 10 engaged with the irregular portions 14 and overlapped is surrounded with a cylindrical holder 16. Wedges 18, 18 are driven between the inside of the holder 16 and the outside of the steel plates 10, 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure and a method for joining steel sheet materials to each other.

[0002]

2. Description of the Related Art Conventionally, as a joining structure of strip-shaped steel sheet materials which are construction materials, for example, those shown in FIGS. 7 and 8 are generally known. That is, in the joining structure shown in FIG. 7, the addition plates 2 and 2 are arranged so as to straddle the joining ends of both sides of the steel plates 1 and 1 to be joined to each other. Bolts 4 to a plurality of mounting holes 3, 3 ...
4 are inserted to stop the nuts 4a, 4a. In addition, the joint structure of FIG. 8 is designed to weld 5 between the joint ends of the steel sheet materials 1 and 1.

[0003]

However, in the conventional joining structure of steel sheet materials, in the case of the bolt connection shown in FIG. 7, the mounting holes 3, 3 ... Are structurally defective portions. The tensile load or the compressive load generated between the steel plate members 1 and 1 tends to concentrate stress on the mounting holes 3 and 3 ... On the other hand, in the case of the welded joint shown in FIG. 8, it is difficult to join at the site, and therefore it is necessary to lift and assemble the pre-welded one on the ground, which causes various problems that the lifting machine inevitably becomes large. there were. Further, since the conventional steel plate material 1 is formed of a flat and smooth surface, it has a low adhesion to concrete.

In view of such conventional problems, the present invention makes it possible to increase the strength of the joint portion of the steel sheet material with a simple structure while simplifying the joint and enabling easy joint in the field. At the same time, it is an object of the present invention to provide a joining structure of steel sheet materials and a joining method thereof which can improve the adhesion to concrete.

[0005]

In order to achieve the above object, the joining structure of the steel sheet materials of the present invention is such that at least the joining portions of the steel sheet materials to be joined are formed with concavo-convex portions to be meshed with each other. It is characterized in that the steel plate members are joined together in a state where these uneven portions are meshed with each other.

Further, in such a construction, the outside of the joint portion of the steel plate materials is surrounded by a cylindrical holder, and a wedge is driven between the holder and the outer side surface of the steel plate material.
It is characterized by fixing steel plate members to each other.

Further, mounting holes may be formed between the joined portions of the steel sheet materials, and the steel sheet materials may be fixed to each other via a fastening member inserted through the mounting holes.

The uneven portions may be formed on both side surfaces of the steel plate material, or may be formed on only one side surface.

Further, the concavo-convex portion may be formed at a portion of the steel sheet material which is continuously extended to be cut into the joint portion.

Further, in the method for joining steel sheet materials according to the present invention, at least joining portions of steel sheet materials to be joined are respectively formed with concave and convex portions which are meshed with each other, and then the outside of the joining portion of the steel sheet materials is tubular. Then, in order to join the steel plates together with the concavo-convex portions engaged with each other, the wedges are driven between the holder and the outer surface of the steel plates to fix the steel plates together. It is characterized by doing.

[0011]

In the joint structure for steel sheet materials of the present invention having the above-described structure, the uneven load portions formed on the steel sheet materials are engaged with each other to join the steel sheet materials to each other. The compressive load can be supported by the concavo-convex portion that meshes with each other. Therefore, with the fact that the joining strength between steel sheet materials can be significantly increased,
Both can be reliably fixed. Therefore, the joining of the steel plate materials can be performed by a simple operation of simply engaging and fixing the concavo-convex portions, and the joining can be performed on site. Further, since the uneven portion is formed on at least the joint portion of the steel sheet material, by forming the uneven portion over a wider range of the steel sheet material, the adhesion to concrete can be improved.

Further, if uneven portions are formed on both side surfaces of the steel sheet material, the joining surface of the steel sheet material can be any surface, and the uneven portion is formed only on one side surface to be joined in advance. You can also do it.

Further, if the uneven portion is formed at a portion of the continuously extended steel sheet material that is cut and becomes a joint portion, the steel sheet material is divided in consideration of the joint portion, The yield of the material can be improved by minimizing the waste of the steel sheet material.

Further, in fixing the steel plate members to each other in such a structure, the outside of the joint portion of the steel plate members is surrounded by a cylindrical holder, and a wedge is driven between the holder and the outer surface of the steel plate member, Since the joint portions of the steel sheet members can be pressed against each other so that the concave and convex portions are firmly meshed with each other, the steel sheet members can be fixed easily and reliably.

Further, even when the mounting holes are formed between the joined portions of the steel sheet materials and the steel sheet materials are fixed to each other via the fastening member inserted in the mounting holes, the fixing can be easily performed. As a matter of course, since the tensile load and the compressive load are supported by the concavo-convex portions that are meshed with each other, it is possible to prevent stress from concentrating in the mounting holes.

Further, in the method for joining steel sheet materials of the present invention, the concavo-convex portions formed on each other are engaged with each other to join the steel sheet materials together, and the outside of the joined portion of the steel sheet materials is surrounded by a cylindrical holder. Then, by driving a wedge between the holder and the outer surface of the steel sheet material, the joint portions of the steel sheet material can be pressed against each other so that the uneven portions firmly mesh with each other, so that the steel sheet materials are fixed to each other. It can be done easily and reliably. And the tensile load and compression load acting on each steel plate material can be supported by the concavo-convex part that meshes with each other, the joint strength between the steel plate materials can be remarkably increased, and the joint can be completed by simple work. It is possible to join on the spot.

[0017]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. 1 and 2 show a first embodiment of the present invention, FIG. 1 is a perspective view of a main part of a steel plate material, and FIG. 2 is a cross-sectional view of a main part showing a joined state of the steel plate materials.

That is, the steel sheet material 10 of this embodiment has a predetermined thickness t.
The strip-shaped steel sheet material 10 is formed into a strip shape, and the end portions of the strip-shaped steel sheet material 10 are superposed on the end portions of the counterpart steel sheet material 10 to be joined, so that the respective steel sheet materials 10 are joined.

A large number of flat ridges 12, 12, ... Which are continuous in the width direction W and are arranged at regular intervals in the length direction L are formed on both sides of the steel sheet material 10, and these ridges 12, 12 ... The part 14 is formed. Then, the steel sheet materials 10 thus formed with the uneven portions 14 are superposed on each other and joined as shown in FIG.
The width a of the steel plates 10 and 10 to be joined to each other is substantially equal to the width b of the groove 12a formed between the adjacent projections 12 and 12 The grooves 12a can be engaged with each other substantially in close contact with each other.

Then, the joint portion outside of the steel sheet materials 10, 10 in which the concavo-convex portion 14 is meshed with each other and overlapped with each other is surrounded by a cylindrical holder 16 as shown in FIG. The wedges 18 and 18 are driven between the materials 10 and 10 and the outside. The wedges 18 and 18 are driven so that the respective tip portions 18a and 18a of the wedges 18 and 18 are directed toward the tip ends of the steel sheet members 10 and 10. Further, in the illustrated example, the inside of the holder 16 is preliminarily formed to be inclined along the outer shape of the wedges 18, 18, but the holder 16 is, as shown by an imaginary line in the figure,
It may be a simple tubular body having no inclined surface.

In the joining structure of steel sheet materials and the joining method according to the present embodiment having the above-described structure, the uneven portions 14 are formed on the steel sheet materials 10 to be joined to each other, and the uneven portions 14 are engaged with each other. Together, they are designed to overlap each other. Therefore, the tensile load and the compressive load acting between the respective steel plate materials 10 and 10 are
It can be supported by the concavo-convex portions 14 that mesh with each other.

In order to fix the steel plate members 10 and 10 to each other, a wedge 18 is provided between the holder 16 which surrounds the outer side of the joint where the concave and convex portions 14 are engaged with each other and the outer surface of the steel plate members 10 and 10. , 18 are driven.
Therefore, the wedges 18 and 18 make the steel plate materials 10 and 1
The 0 joint portion can be pressed so that the respective concave and convex portions 14 are engaged with each other. Therefore, the joining of the steel plate materials 10 and 10 can be achieved simply by driving the wedges 18 and 18 into the holder 16 after the concavo-convex portions 14 are engaged with each other. Can be done. Further, since the steel sheet materials 10, 10 can be joined together in a simple manner as described above, it is possible to perform the joining on site while improving the strength of the joined portion.

Further, in this embodiment, since the concavo-convex portions 14 are formed on both sides of the steel sheet material 10, the joint surface of the steel sheet material 10 can be any surface, but the concavo-convex portions 14 are formed on both sides in this way. It is also possible to form the concavo-convex portion 14 only on one side to be joined in advance without forming it.

Further, in this embodiment, the uneven portion 14 is
Although it is configured by forming a large number of flat protrusions 12,
Without being limited to this, as shown in FIG. 3, the knurled portion or the like may be used instead of the protrusion 12 to form the notched portion 20. When the notched portion 20 is formed in this manner, the processing of the uneven portion 14 can be significantly simplified.

By the way, in the steel plate material 10 shown in FIGS. 1 and 3, since the concavo-convex portion 14 is formed over the entire length of the steel plate material 10 and on both sides thereof, the concavo-convex portion 14 forms a concrete structure. The adhesive force can be greatly increased.

FIGS. 4 to 6 show a second embodiment of the present invention, in which the same components as those in the above-mentioned respective embodiments are designated by the same reference numerals, and a duplicate description will be omitted. 4 is a perspective view showing an end portion of the steel sheet material, FIG. 5 is a side view showing an essential portion of the steel sheet material, and FIG.
FIG. 4 is a side view of a main part showing a joined state of steel sheet materials.

That is, in this embodiment, the uneven portion 14a is formed on one surface of the steel plate material 10a.
a is formed by forming a plurality of protrusions 22 having a trapezoidal cross section. The uneven portion 14a is made of the steel plate material 10a.
5 is formed on the end portion 10b of the steel sheet material 10a and the portion 10c which becomes the end portion when the steel sheet material 10a is cut (cutting line P), as shown in FIG. .

Then, the cut and formed steel plate materials 10a, 10
When joining a to each other, as shown in FIG.
Similar to the embodiment, the end portions of the steel plate materials 10a, 10a are overlapped with each other to engage the concave and convex portions 14a with each other, and the joint portions are connected via a plurality of bolts 24, 24 ... And nuts 24a, 24a. It is designed to be fixed. The bolts 24, 24 ... Are made of steel plates 10a, 10
Mounting holes 26, 26 ...
, And the nuts 24a, 24a are tightened, so that the concavo-convex portions 14a are pressed against each other so as to mesh with each other.

Therefore, even in this embodiment, the uneven portion 1
4a are engaged with each other so that the bolt 24 and the nut 24
Since the steel plate materials 10a can be joined to each other by fastening with a, the joining work can be easily performed, and the concavo-convex portion 1 meshed with each other can be performed.
Since the tensile load and the compressive load can be received by 4a, it is possible to prevent stress from concentrating in the mounting hole 26.

Further, since the concavo-convex portion 14a is formed at the portion of the steel sheet material 10a that is continuously extended to be cut and becomes a joint portion, if the steel sheet material 10a is divided in consideration of the joint portion, the steel sheet The material yield can be improved by minimizing the waste of the material 10a.

In the second embodiment, the case where the uneven portion 14a is formed on one side of the steel sheet material 10a is disclosed. However, as shown in the first embodiment, the uneven portion 14a is formed on both sides of the steel sheet material 10a. Of course, it may be formed. Further, although the uneven portion 14 shown in the first embodiment is formed over the entire length of the steel sheet material 10, the uneven portion 14 is formed in the length direction L of the steel sheet material 10 as shown in the second embodiment. It goes without saying that they may be partially formed by means of

[0032]

As described above, in the joining structure of steel sheet materials according to the present invention, the unevenness of the steel sheet materials to be joined is intermeshed with each other so that the tensile load acting on each steel sheet material and Since the compressive load can be supported by the uneven portion, the joining strength between the steel sheet materials can be remarkably increased and the two can be reliably fixed. Therefore, the durability of the joint portion can be improved. Further, since the steel sheet materials are easily joined to each other, it is possible to perform the joining on the spot and greatly improve the work efficiency. Further, since the uneven portion is formed on at least the joint portion of the steel sheet material, by forming the uneven portion over a wider range of the steel sheet material, the adhesion to concrete can be improved.

Further, if uneven portions are formed on both side surfaces of the steel sheet material, the joining surface of the steel sheet material can be any surface, and the uneven portion is formed only on one side surface to be joined in advance. You can also do it.

Further, if the uneven portion is formed at a portion of the continuously extended steel sheet material that is cut and becomes a joint portion, the steel sheet material is divided in consideration of this joint portion, The yield of the material can be improved by minimizing the waste of the steel sheet material.

Further, since a wedge is driven between the cylindrical holder surrounding the outer side of the joined portion of the steel sheet material and the outer side surface of the steel sheet material to be joined, the uneven portions are engaged with each other by the driven wedge. Thus, the steel plate materials can be fixed to each other easily and surely.

Further, since the mounting holes are formed between the joining portions of the steel plate members and the steel plate members are fixed to each other via the fastening member inserted through the mounting holes, the fixing can be easily performed. Of course, it is possible to support the tensile load and the compressive load in the concavo-convex portions that are meshed with each other to prevent stress from concentrating in the mounting holes, and in the end, the durability of the joint portion can be significantly improved. .

Further, in the method for joining steel sheet materials according to the present invention, the concavo-convex portions formed on each other are engaged with each other to join the steel sheet materials together, and the outside of the joined portion of the steel sheet materials is surrounded by a cylindrical holder. Then, by driving a wedge between the holder and the outer surface of the steel sheet material, the joint portions of the steel sheet material can be pressed against each other so that the uneven portions firmly mesh with each other, so that the steel sheet materials are fixed to each other. It can be done easily and reliably. And the tensile load and compression load acting on each steel plate material can be supported by the concavo-convex part that meshes with each other, the joint strength between the steel plate materials can be remarkably increased, and the joint can be completed by simple work. It has various excellent effects that it enables on-site joining.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part of a steel plate material showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of essential parts of a joined state of steel sheet materials showing the first embodiment of the present invention.

FIG. 3 is a perspective view of an essential part corresponding to FIG. 1, showing another embodiment of the first embodiment of the present invention.

FIG. 4 is a perspective view of a connecting end portion of a steel plate material showing a second embodiment of the present invention.

FIG. 5 is a side view of an essential part of a steel plate material showing a second embodiment of the present invention.

FIG. 6 is a side view showing a joined state of steel sheet materials showing a second embodiment of the present invention.

FIG. 7 is a side view of an essential part showing an example of a conventional joining structure of steel sheet materials.

FIG. 8 is a side view of essential parts showing another example of the conventional joining structure of steel sheet materials.

[Explanation of symbols]

10, 10a Steel plate material 12 Protrusions 14 and 14a Concavo-convex portion 16 Holder 18 Wedge 20 Jagged portion 22 Protrusions 24 Bolt (fastening member) 24a Nut (fastening member) 26 Mounting hole

Claims (7)

[Claims] 1. The invention is characterized in that at least joining portions of steel sheet materials to be joined are formed with concavo-convex portions which are meshed with each other, and the steel sheet materials are joined in a state where these concavo-convex portions are meshed with each other. Joined structure of steel sheet materials. 2. The steel plate materials are fixed to each other by surrounding the outside of the joint portion of the steel plate materials with a cylindrical holder and driving a wedge between the holder and the outer side surface of the steel plate materials. The joining structure for steel sheet materials according to claim 1. 3. A mounting hole is formed between the joining portions of the steel plate materials,
The steel sheet material joining structure according to claim 1, wherein the steel sheet materials are fixed to each other via a fastening member inserted through the mounting hole. 4. The joint structure for steel sheet materials according to claim 1, wherein the uneven portions are formed on both side surfaces of the steel sheet material. 5. The joint structure for steel sheet materials according to claim 1, wherein the uneven portion is formed only on one side surface of the steel sheet material. 6. The concavo-convex portion is formed at a portion of the steel sheet material that is continuously extended to be cut to become the joint portion. Joined structure of the steel sheet materials described. 7. A concavo-convex portion that meshes with each other is formed on at least a joint portion between steel sheet materials to be joined, and then the outside of the joint portion of the steel sheet material is surrounded by a cylindrical holder, and then these concavo-convex portions are formed. In order to join the steel plate members with each other in a state where parts are engaged with each other, a wedge is driven between the holder and the outer surface of the steel plate member to fix the steel plate members to each other. Joining method.