Steel material joining structure

Abstract

To provide a joint structure of steel materials which has the same joint strength as a conventional joint structure of steel materials, can reduce the number of components, can easily be joined, and can further make a flange surface flat.SOLUTION: A joint structure of steel materials joins end portions of a first steel material and a second steel material which are adjacent to each other and each include at least a flange and a web. The joint structure comprises: a transmission plate which is not in contact with the web of the first steel material, is arranged in parallel to a surface of the web, and is welded to a rear face of the end portion of the flange of the first steel material; and a connection plate which is not in contact with the web of the second steel material, is arranged in parallel to a surface of the web so as to protrude from the end portion of the second steel material, and is welded to a rear face of the end portion of the flange of the second steel material. The transmission plate of the first steel material and the connection plate of the second steel material are provided at both sides so as to clamp each web. The transmission plate of the first steel material and the connection plate of the second steel material are closely in contact with each other to be bolt-joined.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a joining structure of steel materials.

Background Art

[0002] In buildings such as buildings, structural materials such as steel frames are used for the framework. As such structural materials, H-shaped steel is generally often used from the viewpoints of bending rigidity, bending strength, etc., and these are assembled according to the design of the building to form a building structure.

[0003] When joining H-shaped steel in the construction of a building structure, conventionally, a joining structure as shown in FIG. 19 has been used. In this joining structure, since the bending moment applied to the ends of adjacent H-shaped steels 40 and 41 mainly becomes an axial force in the flange 12 cross-section and is transmitted, the flanges 12 of the H-shaped steels 40 and 41 are arranged so that the axial force is transmitted in the axial force direction. The backing plates 8 are respectively applied to the front and back surfaces of the flange 12 and clamped, and tightened with bolts 6 and nuts 7 to perform friction joining on the two friction surfaces.

[0004] Also, since the shearing force applied to the H-shaped steels 40 and 41 mainly becomes a vertical shearing force in the web 13 cross-section and is transmitted, the backing plates 9 are respectively applied to both surfaces of the web 13 of the adjacent H-shaped steels 40 and 41 so that the shearing force is transmitted, and tightened with bolts 6 and nuts 7 to perform friction joining on the two friction surfaces. Further, the axial force applied to the H-shaped steels 40 and 41 is transmitted by the joining of both the flanges 12 and the webs 13.

[0005] In such a conventional joining structure, in order to maintain a high joining strength between adjacent H-shaped steels 40 and 41, a large number of backing plates 8 and 9, and a large number of bolts 6 and nuts 7 for fixing each of the backing plates 8 and 9 are required. Therefore, there is a problem that the number of parts to be used becomes very large, the cost increases, and it takes a great deal of labor to join them.

[0006] In response to such problems, a method has been proposed in which an L-shaped member that abuts and joins the inner surface of the flange and the side surface of the web of the H-shaped steel is used and joined by bolts (see Patent Document 1). According to this proposal, the number of packing plates can be reduced while maintaining the joining strength. However, since the number of bolts used is about the same as in the conventional case, it is costly, and the workability is also as low as in the conventional case.

[0007] On the other hand, in a conventional joining structure in which the front and back surfaces of the flanges 12 of adjacent H-shaped steels 40 and 41 shown in FIG. 19 are sandwiched between two packing plates and tightened and joined by bolts 6 and nuts 7, inevitably, the heads of the bolts 6, the nuts 7, and the packing plates 8 protrude on the front surface side of the flange 12. Here, in such a joining structure, when constructing other parts such as the floor on the front surface side of the flange 12 of the joining portion, the protruding bolt heads 6, nuts 7, and packing plates 8 become an obstacle, and a design to avoid them is required. Therefore, it has been desired that the front surface side of the flange 12 be flat.

[0008] In response to such problems, in Patent Document 1, the packing plate on the back side of the flange and half of the web packing plate are integrated into an L-shape. However, since it is also used as a packing plate for the flange, the bolt joining with the flange is essential, and the bolt protrusion on the outer surface of the flange has not been solved.

[0009] Therefore, a proposal has been made to weld end plates to the end faces of the H-shaped steels to be joined and fix the end plates to each other with bolts and nuts (see Patent Document 2). According to this proposal, the number of parts can be reduced, the workability is excellent, and a structure in which the heads of the bolts and the nuts do not protrude on the flange surface can be achieved.

[0010] Also, as another method for eliminating the protrusion from the flange surface, a part with a thick tip at the upper flange and a recess for sinking the bolt head is integrally formed with the flange by full penetration welding, and a corresponding packing plate for transmitting the force of the flange is arranged inside the flange and joined with through bolts on-site (see Patent Document 3).

Prior Art Documents

Patent Document

[0011]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0012] However, in the method of joining end plates provided at the ends of the H-shaped steel proposed in Patent Document 2 above with bolts, since the axial direction of the bolts is the out-of-plane direction of the end plates, even if a thick plate is used to reduce deformation, minute deformation cannot be avoided, and minute deformation in the tensile joining of high-strength bolts is also added, making it difficult to achieve a completely rigid joint like the conventional gusset plate method shown in FIG. 19.

[0013] In addition, in the proposal of Patent Document 3, there are problems such as the fact that thick and recessed parts are expensive, the complete fusion welding of the parts and the H-shaped steel flange is costly, and since the friction surface with the gusset plate is a one-sided shear friction joint, the number of bolts required is nearly twice that of the conventional two-sided shear friction joint.

[0014] The present invention has been made in view of the above circumstances, and has an object to provide a steel material joining structure that has a joining strength comparable to that of the conventional steel material joining structure, can reduce the number of parts, is easy to join, and can flatten the surface side of the flange.

Means for Solving the Problems

[0015] The steel material joining structure of the present invention has been made to solve the above technical problems, and is characterized by the following. First, the steel material joining structure of the present invention is a steel material joining structure for joining the ends of at least a first steel material and a second steel material having adjacent flanges and webs, and a transmission plate that does not contact the web of the first steel material, is disposed parallel to the surface of the web, and is welded to the back surface of the end of the flange of the first steel material; and a connecting plate that does not contact the web of the second steel material, is disposed parallel to the surface of the web and so as to protrude from the end of the second steel material, and is welded to the back surface of the end of the flange of the second steel material, and the transmission plate of the first steel material and the connecting plate of the second steel material are provided on both sides with the respective webs interposed therebetween, characterized in that the transmission plate of the first steel material and the connecting plate of the second steel material are closely bolted together. Second, the steel material joining structure of the present invention is a steel material joining structure for joining the ends of at least a first steel material and a second steel material having adjacent flanges and webs, and on one side of the web of the first steel material, a transmission plate that does not contact the web, is disposed parallel to the surface of the web, and is welded to the back surface of the end of the flange of the first steel material, and on the other side of the web, a connecting plate that does not contact the web, is disposed parallel to the surface of the web and so as to protrude from the end of the first steel material, and is welded to the back surface of the end of the flange of the first steel material, and on one side of the web of the second steel material, a connecting plate that does not contact the web, is disposed parallel to the surface of the web and so as to protrude from the end of the second steel material, and is welded to the back surface of the end of the flange of the second steel material, and on the other side of the web, a transmission plate that does not contact the web, is disposed parallel to the surface of the web, and is welded to the back surface of the end of the flange of the second steel material, and characterized in that each of the transmission plate of the first steel material and the connecting plate of the second steel material, and the connecting plate of the first steel material and the transmission plate of the second steel material are closely bolted together. Thirdly, in the steel material joining structure of the first or second invention, the transmission plates are arranged in two pieces with a space equal to the thickness of the connection plate therebetween, and it is preferable that the connection plate is sandwiched between the two transmission plates and bolted. Fourthly, in the steel material joining structure of the first to third inventions, it is preferable that a stiffener is connected to at least one of the transmission plate or the connection plate. Fifthly, in the steel material joining structure of the first to fourth inventions, it is preferable that the first steel material and the second steel material are any one of H-shaped steel, T-shaped steel, channel steel, I-shaped steel, or a combination thereof. Sixthly, the steel material joining structure of the present invention is a steel material joining structure for joining a steel material having at least a flange and a web and a structure, a transmission plate that does not contact the web of the steel material, is arranged parallel to the surface of the web, and is welded to the back surface of the end of the flange, and a connection plate provided so as to be connectable to the transmission plate provided on the steel material so as to protrude from the structure, characterized in that the transmission plate of the steel material and the connection plate of the structure are in close contact and bolted. Seventhly, the steel material joining structure of the present invention is a steel material joining structure for joining a steel material having at least a flange and a web and a structure, on one side of the web of the steel material, a transmission plate that does not contact the web of the steel material, is arranged parallel to the surface of the web, and is welded to the back surface of the end of the flange, and on the other side of the web, a connection plate that does not contact the web, is arranged parallel to the surface of the web and so as to protrude from the end of the steel material, and is welded to the back surface of the end of the flange of the steel material, and a connection plate provided so as to be connectable to the transmission plate provided on the steel material so as to protrude from the structure, and a transmission plate provided so as to be connectable to the connection plate provided on the steel material, Each of the transfer plate of the steel material and the connection plate of the structure, and the connection plate of the steel material and the transfer plate of the structure is in close contact and bolted together. Eighth, in the joining structure of the steel material according to the sixth or seventh invention, it is preferable that a stiffener is connected to the transfer plate provided on the steel material. Ninth, in the joining structure of the steel material according to the sixth to eighth inventions, the transfer plate provided on the steel material and / or the structure is arranged in two layers with a space equal to the thickness of the connection plate provided on the structure and / or the steel material, It is preferable that the connection plate is sandwiched between the two transfer plates and bolted together. Tenth, in the joining structure of the steel material according to the sixth to ninth inventions, the steel material is preferably any one of H-shaped steel, T-shaped steel, channel steel, and I-shaped steel, and the structure is preferably any one of H-shaped steel, channel steel, Z-shaped steel, I-shaped steel, square steel pipe, and foundation fixing plate.

Advantages of the Invention

[0016] According to the joining structure of the steel material of the present invention, it has a joining strength comparable to that of the conventional joining structure of the steel material, can reduce the number of parts, is easy to perform joining work, and further enables the surface side of the flange to be flattened.

Brief Description of the Drawings

[0017]

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Figure 19

Embodiments for Carrying Out the Invention

[0018] An embodiment of the joining structure of steel materials according to the present invention will be described in detail below with reference to the drawings. The joining structure of steel materials according to the present invention is a joining structure of steel materials that joins the ends of at least adjacent flanges and webs of a first steel material and a second steel material. And, a transmission plate that does not contact the web of the first steel material, is disposed parallel to the surface of the web, and is welded to the back surface of the flange of the first steel material, and does not contact the web of the second steel material, is disposed parallel to the surface of the web and projects from the end of the second steel material, and a connecting plate welded to the back surface of the flange of the second steel material are provided. And, the transmission plate of the first steel material and the connecting plate of the second steel material are provided on both sides with the respective webs interposed therebetween, and further, the transmission plate of the first steel material and the connecting plate of the second steel material are closely bolted together.

[0019] <First Embodiment> FIG. 1 is a perspective view showing a first embodiment of the joining structure of steel materials according to the present invention, FIG. 2 is a cross-sectional view taken along line A-A after joining of the embodiment of FIG. 1, and FIG. 3 is a cross-sectional view taken along line B-B. In the joining structure of steel materials of this first embodiment, the ends of two adjacent H-shaped steels are joined as the first steel material and the second steel material.

[0020] The H-shaped steel 10 as the first steel material in the joining structure of steel materials of this first embodiment is composed of upper and lower flanges 12 and one web 13 that vertically connects the central portions of the cross-sections of the respective flanges 12. Further, the H-shaped steel 11 as the second steel material to be joined has an H shape with substantially the same cross-section as the H-shaped steel 10. The joining of such H-shaped steels 10 and 11 can be used, for example, for linear joining such as beams, columns, and bracings.

[0021] In the steel material joining structure of the first embodiment, the transmission plate 2 provided on the H-shaped steel 10 does not come into contact with the web 13, and is arranged along the longitudinal direction on the back surface of the end portion of the flange 12 with a predetermined interval so as not to protrude from the end portion of the H-shaped steel 10 and to connect the upper and lower flanges 12, and is welded. Further, in the first embodiment, two transmission plates 2 are arranged with an interval corresponding to the thickness of the connection plate 3, and are further provided on both sides with the web 13 of the H-shaped steel interposed therebetween. Note that the welding of the transmission plate 2 and the flange 12 is performed so that the force is transmitted between the edge portion of the transmission plate 2 and the flange 12.

[0022] Also, in the first embodiment, since the connection plate 3 is provided in close contact with the surface of the transmission plate 2, it is desirable that the welding portion 21 of the transmission plate 2 and the flange 12 is welded so that a so-called bead that bulges along the edge of the transmission plate 2 does not protrude. In order to achieve such a welding state, for example, it is preferable to form a chamfered portion in advance at the edge of the welding portion 21 of the transmission plate 2. Welding is usually performed by partial penetration welding so as to fill the chamfered portion, and the excess portion is cut so that the transmission plate 2 and the connection plate 3 can be provided in close contact. Further, a chamfered portion can be formed at the edge of the connection plate 3 to be brought into close contact to avoid contact with the bulge of the bead. The welding form of the flange 12 and the transmission plate 2 is not particularly limited, but in consideration of the above, it is desirable to perform partial penetration welding and cut the excess.

[0023] In addition, the connecting plate 3 provided on the H-shaped steel 11 is not in contact with the web 13 and is welded to the back surface of the end of the flange 12 along the longitudinal direction so as to protrude from the end of the H-shaped steel 11 at a predetermined interval at a position where it can be joined to the transmission plate 2. Further, the thickness of the connecting plate 3 is set to the thickness of the interval between the two transmission plates 2 provided on the H-shaped steel 10. At the time of joining, the end of the H-shaped steel 10 where the transmission plate 2 is provided and the end of the H-shaped steel 11 where the connecting plate 3 is provided are butted against each other, and the connecting plate 3 is sandwiched between the transmission plates 2 and joined by bolts 6. That is, the joining of the transmission plate 2 and the connecting plate 3 is a shear joint by bolts 6. Note that if a gap of about 1 mm is provided between the connecting plate 3 and the connecting plate 2 as a clearance that allows the bolts to be in close contact, it is easy to insert.

[0024] For the joining of the transmission plate 2 and the connecting plate 3 by bolts 6, through holes 5 that penetrate the connecting plate 3 and the transmission plate 2 coaxially are provided at predetermined positions within the range where the transmission plate 2 and the connecting plate 3 overlap, and bolts 6 are inserted into the through holes 5 and tightened with nuts 7 for joining. At this time, for the strength of the connecting plate 3 and the bolt joining, strength against the resultant force of the bending moment, axial force, and shear force applied to the joint portion is required.

[0025] In addition, in the tightening by bolts 6 and nuts 7, if it is difficult to fix the nut 7 on the back side of the inner (web 13 side) transmission plate 2 due to the positional relationship between the two transmission plates 2 and the connecting plate 3 to be sandwiched, the nut 7 can be welded in advance at the position of the through hole 5 to facilitate and ensure the tightening of the bolt 6. Also, by forming a female thread corresponding to the specification of the bolt 6 in the through hole 5 of the inner transmission plate 2, it can also be fastened.

[0026] The bolt 6 can have its thickness, strength, and number determined according to the required strength. Also, by changing the pitch and number of the bolts 6, the length and thickness of the transmission plate 2 can be designed. Note that when the transmission plate 2 is longer, the strength transmitted from the joint of the flange 12 becomes greater, and the welding length with the flange 12 can be increased. Therefore, the welding size can be reduced and the transmission plate 2 can be made thinner. Also, since the length of the bolt 6 can be shortened, it is economical.

[0027] The connection plate 3 can have its material strength and cross-sectional area determined according to the required strength. At this time, setting the connection plate 3 to be thinner is more economical because the length of the bolt 6 can be shortened.

[0028] In general, in bolt shear joints, the more shear surfaces there are, the greater the joint strength. In the steel material joint structure of the first embodiment, since one connection plate 3 is sandwiched between two transmission plates 2 from both sides and joined with bolts 6, the bolt joint between the H-shaped steel 10 and the H-shaped steel 11 becomes a two-sided shear joint.

[0029] In this first embodiment, the force transmitted to the transmission plate 2 welded to the back surfaces of the upper and lower flanges 12 of the H-shaped steel 10 is transmitted from the weld 21 to the flange 12. However, since the transmission plate 2 and the connection plate 3 are clamped together with bolts 6, the force transmitted to the transmission plate 2 is transmitted to the connection plate 3, and the force is transmitted from the joint of the connection plate 3 of the H-shaped steel 11 to the flange 12.

[0030] As described above, in the steel material joint structure of the first embodiment, since the transmission plate 2 is welded to the back surface of the flange 12, a flat surface without protrusions or steps due to packing plates or the like can be obtained by the bolts 6, and the workability on the surface side of the flange 12 can be improved.

[0031] Note that the joint position of the transmission plate 2 and the connection plate 3 is preferably provided as close to the edge side of the flange 12 as possible. Thereby, a joint structure excellent in strength in the weak axis direction of the joined H-shaped steels 10 and 11 can be obtained.

[0032] <Second Embodiment> In the present invention, a joint structure of steel materials according to a second embodiment as shown in FIG. 4 can also be adopted. In the second embodiment, the transmission plate 2 provided on the H-shaped steel 10 does not come into contact with the web 13, and is provided at a predetermined interval along the longitudinal direction on the back surface of the end portion of the flange 12 so as not to protrude from the end portion of the H-shaped steel 10, and separately for each of the upper and lower flanges 12, two sheets are arranged with an interval corresponding to the thickness of the connecting plate 3. Further, the transmission plates 2 are provided on both sides of the web 13 of the H-shaped steel 10 with the web 13 interposed therebetween.

[0033] Also, the connecting plate 3 provided on the H-shaped steel 11 does not come into contact with the web 13, and at a position where it can be joined to the transmission plate 2 at a predetermined interval, along the longitudinal direction on the back surface of the end portion of the flange 12, so as to protrude from the end portion of the H-shaped steel, and is welded separately for each of the upper and lower flanges 12.

[0034] Also in the configuration of the second embodiment, similar to the configuration of the first embodiment, two connecting plates are bolted from both sides of the web 13 with bolts 6 and nuts 7, so that on both sides of the web 13, there are two shear planes respectively, and it is possible to achieve the same effect as the joint structure of the first embodiment.

[0035] <Third Embodiment> In the joint structure of steel materials of the present invention, in addition to the first embodiment and the second embodiment, as shown in FIGS. 5 and 6, instead of sandwiching one connecting plate with two transmission plates 2, the transmission plate 2 and the connecting plate 3 are joined so as to connect the upper and lower flanges 12, and the surfaces of one transmission plate 2 and one connecting plate 3 are aligned and bolted together.

[0036] <Fourth Embodiment> Also, as shown in FIG. 7, in the third embodiment, similar to the second embodiment, the transmission plate 2 and the connection plate 3 may be divided and joined to each of the upper and lower flanges 12, or as shown in FIG. 8, only the transmission plate 2 may be joined so as to connect the upper and lower flanges 12, and the connection plate 3 may be divided and joined. Further, as shown in FIG. 9, only the connection plate 3 may be joined so as to connect the upper and lower flanges 12, and the transmission plate 2 may be divided and joined.

[0037] <Fifth Embodiment> In the first and second embodiments, the transmission plate 2 is welded so as not to protrude from the end of the H-shaped steel 10, and the connection plate 3 is welded so as to protrude from the end of the H-shaped steel 11. However, as shown in FIG. 10, the transmission plate 2 may be welded so as to protrude from the end of the H-shaped steel 10, and the connection plate 3 may be welded so as not to protrude from the end of the H-shaped steel 11. Further, as shown in FIG. 11, the transmission plate 2 and the connection plate 3 may be welded and joined so as to protrude from the ends of the H-shaped steels 10 and 11. In this case, bolt joining can be performed at the ends of the adjacent H-shaped steels 10 and 11.

[0038] <Sixth Embodiment> In the steel material joining structure of the present invention, as shown in FIG. 12, a stiffener 19 can be welded to the transmission plate 2 and the connection plate 3 in a direction perpendicular to the webs 13 of the H-shaped steels 10 and 11. In FIG. 12, the stiffener 19 is connected to the joining structure of the first embodiment, but the stiffener 19 can also be connected to the joining structures of the second to fifth embodiments.

[0039] Thereby, the shearing force applied to the webs 13 of the H-shaped steels 10 and 11 is transmitted to the H-shaped steels 10 and 11 through the transmission plate 2 and the connection plate 3 from the stiffeners 19 attached thereto, respectively. In the steel material joining structure of the present invention, when no shearing force is applied to the joining portion of the steel material due to the joining conditions of the steel material or the like, the stiffener 19 can be omitted as in the first to fifth embodiments.

[0040] Also, the adjacent H-shaped steels 10 in the first to sixth embodiments may have cross-sectional shapes different from that of the H-shaped steel 11, and each may be a long H-shaped steel, or one may be a short H-shaped steel joined vertically, horizontally, or at a predetermined angle from a beam-shaped or column-shaped steel material. Furthermore, the first steel material 10 and the second steel material 11 in the joining structure of the present invention can be applied as long as they are steel materials having flanges 12 and webs 13, and can have a joining configuration of any one of T-shaped steels, channel steels, I-shaped steels, or a combination thereof.

[0041] Furthermore, in the joining structure of the steel materials of the present invention, in the joining structure of the steel materials that joins the ends of the first steel material 10 and the second steel material 11, which at least have adjacent flanges 12 and webs 13, on one side of the web 13 of the first steel material 10, a transmission plate 2 that does not contact the web 13 and is disposed parallel to the surface of the web 13 and welded to the back surface of the end of the flange 12 is provided, and on the other side of the web 13, a connecting plate 3 that does not contact the web 13 and is disposed parallel to the surface of the web 13 and protruding from the end of the first steel material is provided and welded to the back surface of the end of the flange 12.

[0042] Also, on one side of the web 13 of the second steel material 11, a connecting plate 3 that does not contact the web 13 and is disposed parallel to the surface of the web 13 and protruding from the end of the second steel material is provided and welded to the back surface of the end of the flange 12, and on the other side of the web 13, a transmission plate 2 that does not contact the web 13 and is disposed parallel to the surface of the web 13 and welded to the back surface of the end of the flange 12 is provided. Then, the transmission plate 2 of the first steel material 10, the connecting plate 3 of the second steel material 11, and the connecting plate 3 of the first steel material 10 and the transmission plate 2 of the second steel material 11 are closely bolted together.

[0043] <Seventh Embodiment> Specifically, as a seventh embodiment, as shown in FIGS. 13 and 14, in a joining structure for joining the ends of adjacent H-shaped steel 10 as the first steel material and H-shaped steel 11 as the second steel material, a transmission plate 2 is provided on one side of the web 13 of the H-shaped steel 10 as the first steel material, and a connecting plate 3 is provided on the other side of the web 13 so as to protrude from the end of the H-shaped steel 10.

[0044] Also, on one side of the web 13 of the H-shaped steel 11 as the second steel material, a connecting plate 3 is provided so as to protrude from the end of the H-shaped steel 11, and a transmission plate 2 is provided on the other side of the web 13. That is, in the H-shaped steel 10 as the first steel material and the H-shaped steel 11 as the second steel material, the connecting plate 3 and the transmission plate 2 are provided on each of the left and right sides of the web 13.

[0045] Then, the transmission plate 2 of the H-shaped steel 10 as the first steel material and the connecting plate 3 of the H-shaped steel 11 as the second steel material, and the connecting plate 3 of the H-shaped steel 10 as the first steel material and the transmission plate 2 of the H-shaped steel 11 as the second steel material are brought into close contact with each other and bolted.

[0046] In addition, also in the seventh embodiment, as shown in FIGS. 13 and 14, in a direction perpendicular to the web 13 of the H-shaped steels 10 and 11, a stiffener 19 can be welded to at least one end of the transmission plate 2 or the connecting plate 3. Also, in that case, particularly when joining with high-strength bolts, as shown in FIG. 14, it is preferable to remove the web in the region where the transmission plate 2 or the connecting plate 3 is provided. This makes it possible to easily insert the bolt 6 into the through-hole 5 from the inside.

[0047] Also, in the seventh embodiment, the arrangement configurations of the connecting plate 3 and the transmission plate 2 are each in a pair and the same as the arrangement configurations of the third embodiment shown in FIGS. 5 and 6, but the arrangement configurations of the connecting plate 3 and the transmission plate 2 can also be the arrangement configurations of the first, second, fourth, and fifth embodiments.

[0048] In the joining structure of the steel material of the present invention, as another embodiment, it is also possible to adopt a joining structure of the steel material for joining the steel material and the structure. Hereinafter, the joining structure of the steel material and the structure will be described.

[0049] <Eighth Embodiment> In the eighth embodiment, as shown in FIGS. 15 and 16, at the end of the H-shaped steel 4 arranged vertically, in the same manner as in the first embodiment, the transmission plate 2 does not contact the web 13 of the H-shaped steel, and is parallel to the surface of the web 13 and does not protrude from the end of the steel material 4 to the back surface of the end of the flange 12. Two transmission plates 2 are provided. These two transmission plates 2 are welded to the back surface of the flange 12 at the welding portion 21 with a space corresponding to the thickness of the connecting plate 3.

[0050] Further, the connecting plate 3 is inserted into an insertion hole 14 provided in the upper flange 12 of the H-shaped steel 15 as a structure arranged horizontally, and is further welded to the upper and lower flanges 12. Then, the connecting plate 3 protruding from the flange 12 of the H-shaped steel 15 is sandwiched between two transmission plates 2 at the end of the H-shaped steel 4 and bolted with bolts 6 and nuts 7.

[0051] According to the eighth embodiment, at the end of the H-shaped steel 4 arranged vertically, in the same manner as in the first embodiment, the contact surfaces of the connecting plate 3 and the two transmission plates 2 form two shear surfaces, and the two connecting plates are bolted with bolts 6 and nuts 7 from both sides of the web 13. Therefore, the transmission plate 2 and the connecting plate 3 are joined by two-sided shear joint with bolts 6. As a result, it is possible to join the H-shaped steel 15 as a structure and the H-shaped steel 4 as a steel material in the vertical direction with excellent joining strength.

[0052] <Ninth Embodiment> Also, as shown in FIG. 17 as the ninth embodiment, a connecting plate 3 can be welded vertically to the foundation fixing plate 18 of the column base anchor of the structure 15 in the foundation 16 as the structure 15, surrounded by reinforcing bars 17, etc., and firmly integrated with concrete. Then, the connecting plate 3 protruding from the foundation 16 is clamped and bolted by the transmission plate 2 of the H-shaped steel 4 having the same configuration as the H-shaped steel 4 of the eighth embodiment arranged vertically. At this time, the arrangement configuration of the transmission plate 2 of the H-shaped steel 4 and the connecting plate 3 welded to the foundation fixing plate 18 which is the structure 15 embedded in the foundation 16 can be any of the configurations of the first to sixth embodiments according to design, etc.

[0053] Furthermore, in the steel material joining structure of the present invention, in a joining structure for joining at least a steel material 4 having a flange 12 and a web 13 and a structure 15, on one side of the web 13 of the steel material 4, a transmission plate 2 is provided which does not contact the web 13 of the steel material 4, is arranged parallel to the surface of the web 13, and is welded to the back surface of the end of the flange 12. And on the other side of the web 13, a connecting plate 3 is provided which does not contact the web 13, is arranged parallel to the surface of the web 13 and protrudes from the end of the steel material 4, and is welded to the back surface of the end of the flange 12 of the steel material 4.

[0054] Also, a connecting plate 3 provided so as to be connectable to the transmission plate 2 provided on the steel material 4 is provided so as to protrude from the structure 15, and a transmission plate 2 provided so as to be connectable to the connecting plate 3 provided on the steel material 4 is provided. Then, the transmission plate 2 of the steel material 4 and the connecting plate 3 of the structure 15, and the connecting plate 3 of the steel material 4 and the transmission plate 2 of the structure 15 are brought into close contact with each other and bolted.

[0055] <Tenth Embodiment> Specifically, as shown in FIG. 18 as the tenth embodiment, in a joining structure for joining an H-shaped steel 4 as a steel material and an H-shaped steel 15 as a structure, a transmission plate 2 is provided on one side of the web 13 of the H-shaped steel 4 as the steel material, and a connecting plate 3 is provided on the other side of the web 13 so as to protrude from the end of the H-shaped steel 4.

[0056] Further, a configuration can be adopted in which a connecting plate 3 and a transmission plate 2 are provided so as to be connectable to the transmission plate 2 and the connecting plate 3 provided on the H-shaped steel 4 as the steel material so as to protrude from the H-shaped steel 15 as the structure.

[0057] Then, the transmission plate 2 of the H-shaped steel 4 as the steel material is brought into close contact with the connecting plate 3 of the H-shaped steel 15 as the structure, and the connecting plate 3 of the H-shaped steel 4 as the steel material is brought into close contact with the transmission plate 2 of the H-shaped steel 15 as the structure, and they are bolted together.

[0058] In addition, also in the tenth embodiment, as shown in FIG. 18, a stiffener 19 can be welded to the ends of the transmission plate 2 and the connecting plate 3 in a direction perpendicular to the web 13 of the H-shaped steel 4. Further, in that case, particularly when joining with high-strength bolts, as shown in FIG. 18, it is preferable to remove the web 13 in the region where the transmission plate 2 or the connecting plate 3 is provided. This enables the bolt 6 to be inserted into the through-hole 5 from the inside.

[0059] In the tenth embodiment, the arrangement configurations of the connecting plate 3 and the transmission plate 2 are each a pair, but for example, the arrangement configurations of the connecting plate 3 and the transmission plate 2 of the joining structure of the eighth embodiment can also be adopted.

[0060] As described above, the joint structure of the H-shaped steel of the present invention has been described based on the embodiments, but the present invention is not limited to the above embodiments at all, and various modifications are possible within the scope not departing from the gist thereof.

[0061] For example, in the above-described embodiment, the bolt 6 and the nut 7 are shear-bonded, but in the one-sided shear bonding as in the third and fourth embodiments, friction bonding with high-strength bolts can also be used. Further, although high-strength bolts are usually used for the bolt 6, ultra-high-strength bolts can be used, thereby reducing the number of bolts 6.

[0062] In addition, in the eighth and ninth embodiments described above, the H-shaped steel 4 provided with the transfer plate 2 is vertically arranged, but various arrangements can be made according to the design, such as horizontally arranging the H-shaped steel 4 provided with the transfer plate 2.

[0063] According to the steel material joining structure of the present invention having the above-described configuration, it has the same joining strength as the conventional H-shaped steel joining structure, can reduce the number of parts, is easy to join, and further, the surface of the flange 12 can be made flat.

Explanation of Signs

[0064] 10 First steel material (H-shaped steel) 11 Second steel material (H-shaped steel) 12 Flange 13 Web 14 Insertion hole 15 Structure (H-shaped steel) 16 Foundation 17 Reinforcing bar 18 Foundation fixing plate 19 Stiffener 2 Transfer plate 21 Welded part 3 Connecting plate 4 Steel material (H-shaped steel) 40, 41 H-shaped steel 5 Through hole 6 Bolt 7 Nut 8, 9 Gusset plate

Claims

1. A steel material joining structure for joining the ends of a first steel material and a second steel material each having at least adjacent flanges and webs, a transmission plate that does not contact the web of the first steel material, is disposed parallel to the surface of the web, and is welded to the back surface of the end of the flange of the first steel material; a connecting plate that does not contact the web of the second steel material, is disposed parallel to the surface of the web and protruding from the end of the second steel material, and is welded to the back surface of the end of the flange of the second steel material, and the transmission plate of the first steel material and the connecting plate of the second steel material are provided on both sides sandwiching the respective webs, wherein the transmission plate of the first steel material and the connecting plate of the second steel material are in close contact and bolted together. A steel material joining structure characterized by this.

2. A steel material joining structure for joining the ends of a first steel material and a second steel material each having at least adjacent flanges and webs, on one side of the web of the first steel material, a transmission plate that does not contact the web, is disposed parallel to the surface of the web, and is welded to the back surface of the end of the flange of the first steel material; and on the other side of the web, a connecting plate that does not contact the web, is disposed parallel to the surface of the web and protruding from the end of the first steel material, and is welded to the back surface of the end of the flange of the first steel material. And on one side of the web of the second steel material, a connecting plate that does not contact the web, is disposed parallel to the surface of the web and protruding from the end of the second steel material, and is welded to the back surface of the end of the flange of the second steel material; and on the other side of the web, a transmission plate that does not contact the web, is disposed parallel to the surface of the web, and is welded to the back surface of the end of the flange of the second steel material. And the transmission plate of the first steel material and the connecting plate of the second steel material, and the connecting plate of the first steel material and the transmission plate of the second steel material are each in close contact and bolted together. A steel material joining structure characterized by this.

3. Two transmission plates are disposed with a space equal to the thickness of the connecting plate therebetween, The steel material joining structure according to claim 1 or 2, wherein the connecting plate is sandwiched between the two transmission plates and bolted together.

4. The steel material joining structure according to any one of claims 1 to 3, characterized in that a stiffener is connected to at least one of the transfer plate and the connection plate.

5. The steel material joining structure according to any one of claims 1 to 4, characterized in that the first steel material and the second steel material are any one of H-shaped steel, T-shaped steel, channel steel, I-shaped steel, or a combination thereof.

6. A steel material joining structure for joining a steel material having at least a flange and a web to a structure, a transfer plate that does not contact the web of the steel material, is disposed parallel to the surface of the web, and is welded to the back surface of the end of the flange; a connection plate provided so as to be connectable to the transfer plate provided on the steel material so as to protrude from the structure; two transfer plates provided on the steel material are disposed with a space corresponding to the thickness of the connection plate provided on the structure; the connection plate is sandwiched between the two transfer plates; The steel material joining structure is characterized in that the transfer plate of the steel material and the connection plate of the structure are in close contact and bolted together.

7. A steel material joining structure for joining a steel material having at least a flange and a web to a structure, on one side of the web of the steel material, a transfer plate that does not contact the web of the steel material, is disposed parallel to the surface of the web, and is welded to the back surface of the end of the flange; on the other side of the web, a connection plate that does not contact the web, is disposed parallel to the surface of the web and protrudes from the end of the steel material, and is welded to the back surface of the end of the flange of the steel material; and a connection plate provided so as to be connectable to the transfer plate provided on the steel material so as to protrude from the structure, and a transfer plate provided so as to be connectable to the connection plate provided on the steel material; The steel material joining structure is characterized in that each of the transfer plate of the steel material and the connection plate of the structure, and the connection plate of the steel material and the transfer plate of the structure are in close contact and bolted together.

8. The steel material joining structure according to claim 6 or 7, characterized in that a stiffener is connected to the transfer plate provided on the steel material.

9. The transmission plate provided on the steel material and / or the structure is arranged in two sheets with a space equal to the thickness of the connection plate provided on the structure and / or the steel material, The steel material joining structure according to claim 7 or 8, wherein the connection plate is sandwiched between the two transmission plates and bolted.

10. The steel material joining structure according to any one of claims 6 to 9, wherein the steel material is any one of H-shaped steel, T-shaped steel, channel steel, and I-shaped steel, and the structure is any one of H-shaped steel, channel steel, Z-shaped steel, I-shaped steel, square steel pipe, and foundation fixing plate.

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