JP4555883B2 - Friction bonding member and friction bonding structure - Google Patents

Description

  The present invention relates to a friction bonding member used for high-strength bolt friction bonding of various steel materials such as a steel plate, a shaped steel member, and a square steel pipe constituting a building structure, and a friction bonding structure using the same.

  When joining various steel materials such as a steel plate, a shaped steel member, a square steel pipe and the like constituting a building structure, for example, high-strength bolt friction joining using a splice plate is widely used. In this high-strength bolt friction joint, the ends of two steel materials are placed in contact with each other, and then the splice plates are brought into contact with both sides of the steel materials, and then the high-strength bolts inserted through these steel materials and the splice plates are attached. By tightening, a compressive force is introduced between the steel material and the splice plate, and a force acting between the two steel materials is transmitted by a frictional resistance force generated between the steel material and the splice plate.

  Here, as shown in FIG. 9, when the thicknesses of the steel materials 101 and 103 that are faced to each other are different and there is a gap with a thickness corresponding to a difference in thickness called a so-called skin plow, two splices When high-strength bolt frictional joining is performed using only the plate 107, the slip coefficient between the steel materials 101 and 103 and the splice plate 107 decreases, and the splice plate 107 may be buckled. Therefore, in order to eliminate this gap, generally, a filler plate 105 having a thickness corresponding to the thickness between the steel materials 101 and 101 is interposed in the gap, and then these steel materials 101 and 103, the splice plate 107 and A method is adopted in which a high-strength bolt 109 inserted through the filler plate 105 is tightened to introduce a compressive force between the steel materials 101 and 103.

  In addition to this, as a technique proposed for high-strength bolt friction joining between steel materials having different plate thicknesses, for example, a technique disclosed in Patent Document 1 is known. In the disclosed technique of Patent Document 1, the plate thickness of the splice plate positioned on the steel material side having the smaller plate thickness is larger than the plate thickness of the splice plate positioned on the steel material side having the larger plate thickness. Using a splice plate having a special shape formed by cutting so as to increase in thickness according to the difference, it is configured to be able to perform friction welding with a high-strength bolt without using a filler plate. In addition to this, Patent Document 1 discloses a splice plate having a special shape in which a bent portion is formed by bending in the vicinity of a butt portion between two steel materials.

JP 2001-248241 A

  By the way, the above-described prior art has problems as described below.

  When the filler plate 105 is used in the mode as shown in FIG. 9, the number of parts required for the joining work increases during the joining work of the two steel materials 101, 103, and the on-site construction becomes complicated. There is a problem that the performance is lowered.

Further, when using high-strength bolt friction joining, in order to increase the frictional resistance by the splice plate 107, the surface of the splice plate 107 may be subjected to a high friction treatment such as blasting. In this case, when the filler plate 105 as shown in FIG. 9 is used, it is necessary to perform the same high-cost high-friction process on both surfaces of the filler plate 105, and it is necessary to perform the high-friction process. The number of surfaces increases excessively, resulting in an increase in cost.

  In addition, since the disclosed technique of Patent Document 1 requires an extra processing step such as cutting and bending in order to obtain a splice plate having a special shape, the cost increases accordingly.

  Therefore, the present invention has been devised in view of the above-mentioned problems, and the object of the present invention is used when performing high-strength bolt friction joining, and enables cost reduction along with improvement in workability. It is an object of the present invention to provide a friction bonding member and a friction bonding structure using the same.

  In order to solve the above-mentioned problems, the inventor has invented the following friction bonding member and a friction bonding structure using the same, after intensive studies.

The friction bonding member according to claim 1 is a friction bonding member used for high-strength bolt friction bonding of two steel materials having different plate thicknesses whose end portions are butted against each other, and the end portions of the two steel materials. A splice plate that is disposed between the splicing plate and abutting against the surface of the steel material having a large plate thickness, and is interposed between the splice plate and the steel material having a thin plate thickness, and is fixed to the splice plate. The splice plate and the filler plate are formed with bolt holes for inserting the high-strength bolts, and the filler plate is fixed to the splice plate with screws. Features.

According to a second aspect of the present invention, there is provided the friction joining member according to the first aspect , wherein the head of the screw is housed in a counterbore formed in the filler plate.

According to a third aspect of the present invention, there is provided the friction joining member according to the first or second aspect , wherein the filler plate is made of high strength steel having a strength higher than that of the steel material.

According to a fourth aspect of the present invention, there is provided the friction joining member according to any one of the first to third aspects, wherein a high friction treatment is applied to the contact surfaces of the splice plate and the filler plate that are in contact with each other. It is characterized by being given.

The friction joining member according to claim 5 is the invention according to any one of claims 1 to 4 , with respect to the friction surface of the splice plate and the filler plate facing each of the two steel materials, It is characterized by high friction treatment by aluminum spraying.

The friction joining structure according to claim 6 is characterized in that the two steel materials whose end portions are butted against each other are high-strength bolt friction joined by the friction joining member according to any one of claims 1 to 5. And

A steel material according to claim 7 is characterized in that high-strength bolt friction bonding is performed by the friction bonding member according to any one of claims 1 to 5 .

  In the invention according to claim 1, since the splice plate and the filler plate are fixed in advance, it is possible to reduce the number of parts required for the joining work and to simplify the on-site construction, and to improve the workability. It is possible. In addition, when applying a high friction treatment for increasing the frictional resistance, it is sufficient to apply the filler plate only to the outer surface of the filler plate, so that the cost required for the high friction treatment can be reduced. It has become. Further, there is no need for a machining process such as cutting or bending, which enables cost reduction during production.

It is a side view which shows the structure of the steel materials high-strength bolted by the member for friction joining which concerns on this invention. It is a top view which shows the structure of the steel materials bolt-joined with the member for friction joining which concerns on this invention. It is the sectional view on the AA line of FIG. It is the elements on larger scale of FIG. (A) is a disassembled perspective view which shows the structure before the assembly of the member for friction joining, (b) is a perspective view which shows the structure after the assembly. (A) is a fragmentary sectional side view about the member for friction joining shown in FIG. 5, (b), (c) is about the member for friction joining of embodiment different from the member for friction joining of (a), respectively. It is a partial cross section side view. It is a side view which shows the structure of the friction joining structure which used the member for friction joining on both surfaces of steel materials. It is a side view which shows the structure of the friction joining structure by a one-surface friction joining structure. It is a figure for demonstrating a prior art.

  Hereinafter, as a form for carrying out the present invention, a friction joining member used for high-strength bolt friction joining of two steel materials having different thicknesses whose ends are abutted against each other, and a friction joining structure using the same Will be described in detail with reference to the drawings.

  1-4 is a figure which shows the structure of the friction joining structure 10 by which the two steel materials 1 and 3 were joined by the high strength bolt friction joining by the member 5 for friction joining which concerns on this invention, FIG. 1 is the side view. 2 is a top view thereof, FIG. 3 is a sectional view taken along line AA of FIG. 1, and FIG. 4 is a partially enlarged view of FIG.

  The two steel materials 1 and 3 that are friction-joined by the friction-joining member 5 according to the present invention are shaped steel members such as H-shaped steel, angle-shaped steel, groove-shaped steel, and T-shaped steel that constitute a building structure, and steel plates. It is composed of a steel material such as a square steel pipe. As shown in FIGS. 1 to 3, these two steel materials 1, 3 are formed in a substantially H shape from the webs 11, 31 and flanges 13, 33 provided at the upper and lower ends thereof in this embodiment. It is comprised from the made H-section steel.

As shown in FIG. 1, the steel materials 1 and 3 are arranged such that the end portions 1 a and 3 a in the longitudinal direction are abutted with each other and have different plate thicknesses. In the present embodiment, specifically, the flange 33 of the left steel member 3 in the drawing that is abutted against the flange 13 of the right steel member 1 in the drawing is configured to have a thinner plate thickness, About the webs 11 and 31 of each steel materials 1 and 3, it is comprised from the same board thickness.

  These steel materials 1 and 3 are arranged so that the outer side surfaces 13a and 33a of the respective flanges 13 and 33 are located on substantially the same plane, and between the inner side surfaces 13b and 33b of the respective flanges 13 and 33. That is, a plate thickness difference called so-called skin clearance is generated.

  In the present embodiment, the steel materials 1 and 3 are two-surface friction bonded to the webs 11 and 31 and the flanges 13 and 33 by the high strength bolt 9 using the splice plate 7 and the friction bonding member 5. As shown in FIG. 3, the webs 11 and 31 are friction-joined on both sides using a splice plate 7 made of a steel plate. The flanges 13 and 33 have outer side surfaces 13a and 13a, as shown in FIG. The splice plate 7 is used for 33a, and the inner side surfaces 13b and 33b are two-surface friction bonded using the friction bonding member 5.

  FIG. 5A is an exploded perspective view showing a structure before the friction bonding member 5 is assembled, and FIG. 5B is a perspective view showing a structure after the friction bonding member 5 is assembled. FIG. 6A is a partial cross-sectional side view of the friction joining member 5 shown in FIG.

  As shown in FIGS. 5 and 6A, the friction bonding member 5 includes a splice plate 51 and a filler plate 53 fixed to the splice plate 51 with screws 59. Each of the splice plate 51 and the filler plate 53 is made of a flat steel plate, the filler plate 53 has a shorter length in the longitudinal direction, and the lengths in the width direction are substantially the same. It is configured as. The filler plate 53 is disposed and fixed on one end side in the longitudinal direction of the splice plate 51.

The filler plate 53 is formed to have a thickness corresponding to the thickness difference between the steel materials 1 and 3 to be joined at the time of high-strength bolt friction welding. In the present embodiment, the thickness difference between the steel materials 1 and 3 is used. And the same thickness. Since the thickness of the filler plate 53 is provided in order to eliminate the plate thickness difference between the steel materials 1 and 3, the thickness is preferably closer to the plate thickness difference between the steel materials 1 and 3. Even if a difference in thickness of 1 mm or less occurs with respect to the difference, it is permitted (see Architectural Institute of Japan, Building Construction Standard Specification JASS6 Steel Construction, P34).

  Each of the splice plate 51 and the filler plate 53 is formed with a bolt hole 55 through which the high-strength bolt 9 is inserted, and further, a female screw hole 57 for allowing a screw 59 to be screwed into each is formed. Yes. The friction bonding member 5 is arranged so that the positions of the bolt holes 55 and the female screw holes 57 formed in the splice plate 51 and the filler plate 53 are matched with each other, and then the screw 59 is placed in each female screw hole 57. It is manufactured by screwing together. Needless to say, the tapping screw or the drill screw may be used as the screw 59 to omit the thread cutting process or the pilot hole process. Thus, the friction joining member 5 according to the present invention does not require a machining process such as a cutting process or a bending process, and enables cost reduction during production.

  As shown in FIG. 6A, the head of the screw 59 protrudes from the outer surface 51c of the splice plate 51, and further, the screw 59 protrudes from the outer surface 53a of the filler plate 53 so that it does not get in the way during friction welding. The axial length is adjusted so that the shaft end does not protrude. The screw 59 is used to support-splice the splice plate 51 and the filler plate 53, and may be tightened to such an extent that it can be supported.

In the friction joining structure 10 according to the present invention constituted by such a friction joining member 5, as shown in FIGS. 1 and 4, the splice plate 51 of the friction joining member 5 includes two steel members 1,
3 is disposed between the end portions 1a and 3a of the steel plate 3 and is in contact with the inner side surface 13b of the flange 13 which is the surface of the thick steel material 1. Further, the filler plate 53 is connected to the splice plate 51 and the plate thickness. The outer side surface 53a is in contact with the inner side surface 33b of the flange 33, which is the surface of the steel material 3 having a thin plate thickness. In the bolt holes 55 formed in the splice plate 51 and the filler plate 53 of the friction bonding member 5, the splice plate 7 in contact with the outer surface 13 a of the flanges 13 and 33 of the steel materials 1 and 3, and these steel materials 1, The high-strength bolt 9 is inserted together with the bolt hole 41 formed in advance in the nut 3, and the nut 9a is screwed together. By compressing the high-strength bolt 9 and the nut 9 a, a compressive force is introduced between the steel materials 1, 3, the splice plate 7 and the friction joining member 5.

  Next, the effect of the friction welding member 5 according to the present invention will be described.

  According to the friction welding member 5 according to the present invention, even when there is a difference in thickness between the steel materials 1 and 3 to be joined, which is called skin clearance, the thickness difference is caused by the filler plate 53 of the friction welding member 5. Therefore, high-strength bolt friction joining can be performed while eliminating the possibility of the slip coefficient being lowered and the risk of buckling of the splice plate 107.

  In particular, since the splicing plate 51 and the filler plate 53 are fixed in advance, the friction joining member 5 according to the present invention can reduce the number of parts required for the joining work and simplify the on-site construction. It is possible to improve the workability.

  Further, as shown in FIG. 4, the friction bonding member 5 according to the present invention is used for high-strength bolt friction bonding among the outer side surface 53a and the inner side surface 53b of both surfaces of the filler plate 53 in contact with other members. The contributing friction surface is only the outer surface 53a in contact with the steel material 3, and the stress transmission on the inner surface 53b side is performed not by friction bonding but by pressure bearing bonding with screws 59. For this reason, when performing the high friction treatment for increasing the frictional resistance, it is sufficient to apply the filler plate 53 only to the outer side surface 53a, so that the cost required for the high friction treatment is reduced. Is possible.

  In addition, two steel materials 1, such as the outer side surface 53a of the filler plate 53a of the friction bonding member 5 and the inner side surface 51a on one end side in the longitudinal direction of the splice plate 51 in contact with the steel material 1 shown in FIG. The friction surfaces facing each of the three and contributing to the friction welding may be subjected to a high friction treatment as necessary. Examples of the high friction treatment include red rust surface treatment and blast treatment on the surface of these steel plates, forming fine corrugations on the steel plate surfaces by pressing or rolling, or plasma spraying and gas flame spraying on these steel plate surfaces. And a method of spraying a metal such as aluminum or ceramics by arc spraying.

  Among these, it is known that the high friction treatment by thermal spraying of aluminum does not rapidly decrease the frictional resistance during sliding, and has high deformation followability to the slip, as compared with other high friction treatments. In the friction joining structure 10 according to the present invention, since the stress transmission between the splice plate 51 and the filler plate 53 is due to the support pressure joining, the friction joining member 5 and the steel materials 1 and 3 are relatively relative to each other. It has a structure that can cause displacement. For this reason, it is preferable that the friction surface contributing to the friction bonding is subjected to a high friction treatment by aluminum spraying, and thereby, stress transmission between the steel materials 1 and 3 can be performed stably even during sliding. it can. In the present embodiment, aluminum is shown as a sprayed metal having high deformation followability to slip, but a metal other than aluminum such as an aluminum alloy containing copper may be used.

  Next, another embodiment of the friction welding member 5 according to the present invention will be described.

  FIG. 6B and FIG. 6C are a partial cross-sectional side view and a side view showing the configuration of the friction welding member 5 of the embodiment different from the friction welding member 5 shown in FIG. 6A, respectively. .

  6 (b), a counterbore 61 is formed in the filler plate 53 in place of the female screw hole 57 formed in the filler plate 53 of the friction bonding member 5 in FIG. 6 (a). Has been. The counterbore 61 is configured so that the head 63 of the screw 59 is accommodated inside the outer surface 53 a of the filler plate 53 and can be accommodated after the screw 59 is screwed into the female screw hole 57 of the splice plate 51. Is formed.

  As a result, the bearing strength of the filler plate 53 can be improved. That is, generally, the filler plate 53 is thinner than the splice plate 51, and further, the end of the screw 59 is not protruded from the outer surface 53a of the filler plate 53, so that the female screw hole 57 of the filler plate 53 is designed. There is a tendency that the axial length of the screw 57 screwed into this is shorter than the length in the plate thickness direction. For this reason, if it joins with the screw | thread 59 as shown to Fig.6 (a), the bearing strength of the filler plate 53 will become insufficient easily. On the other hand, if the head portion 63 of the screw 59 is accommodated in the counterbore 61 as shown in FIG. 6B, the head portion 63 having a larger shaft diameter than the shaft portion of the screw 59 is supported. The bearing area that contributes to the pressure bonding will increase, and this will improve the bearing capacity of the filler plate 53.

  In this case, the shape of the head 63 and the counterbore 61 of the screw 59 is preferably a countersunk screw and a countersink formed in a substantially conical shape, so that the tightened state after the screw 59 is tightened It will be stable. In addition, the shape of the head 63 and the counterbore 61 of the screw 59 is not limited to this, For example, you may form in the column shape.

  The filler plate 53 needs to have a plate thickness larger than the height of the head 63 of the screw 59 in order to accommodate the head 63 of the screw 59 in the counterbore 61. In the present invention, it is desirable to use a screw having a height of 6 mm or more as the height of the head 63 of the screw 59. Therefore, the filler plate 53 preferably has a thickness of 6 mm or more. A screw having a height of the head 63 of 6 mm or more becomes a screw of M10 or more in terms of screw diameter.

  6 (c), the female screw hole 57 and the screw 59 of the friction welding member 5 in FIG. 6 (a) are omitted, and the filler plate 53 is fixed to the splice plate 51 by adhesion. It is made to be done. In this case, a solid, liquid, or tape-like adhesive is applied and pasted to the inner side surface 53b of the filler plate 53 and the inner side surface 51b on the other end side in the longitudinal direction of the splice plate 51, which are bonded surfaces by bonding. They will be glued together. The adhesive used in this case is not particularly limited as long as it is a known structural adhesive capable of joining steel materials.

  This eliminates the need for threading and pilot hole machining for the female screw hole 57 as shown in FIG. 6 (a), and makes it possible to achieve the effects of the present invention while further reducing the cost. . In this case, transmission of force between the filler plate 53 and the splice plate 51 is not performed via the screw 59 but via an adhesive.

  In addition, it goes without saying that the filler plate 53 of the friction bonding member 5 according to the present invention may be fixed to the splice plate 51 by both screws 59 and adhesion. In this case, when the friction bonding member 5 is manufactured, the splice plate 51 and the filler plate 53 are bonded in advance for temporary fixing, and then threading and prepared hole processing for the screw 59 are performed. This makes it possible to facilitate the production work of the friction bonding member 5 and improve the manufacturability.

  Incidentally, since the filler plate 53 is generally made of a steel material having the same strength as the steel materials 1 and 3 to be joined, the steel material 1 is used to improve the bearing strength of the filler plate 53. 3 may be made of high-strength steel having a strength higher than 3.

  Further, in the present invention, the force generated between the splice plate 51 and the filler plate 53 can be transmitted by the support joint of the screw 59, but by tightening the high strength bolt 9 and the nut 9a, If a compressive force introduced between the steel members 1, 3, the splice plate 7 and the friction joining member 5 is expected, stress transmission between the splice plate 51 and the filler plate 53 can be performed by friction joining. In this case, the above-described abutting surfaces, which are abutting surfaces, are described above with respect to the inner side surface 53b of the filler plate 53 and the inner side surface 51b on the other end in the longitudinal direction of the splice plate 51 shown in FIG. Various high friction treatments may be performed. Thereby, the number of the screws 59 can be reduced.

  Further, as shown in FIG. 1, the friction joining structure 10 according to the present invention is configured by using the friction joining member 5 only on the inner side surfaces 13 b and 33 b of the flanges 13 and 33 which are inner side surfaces of the steel materials 1 and 3. In addition to the above, as shown in FIG. 7, two friction bonding members 5 are provided on both surfaces of the steel materials 1 and 3, that is, on both the outer surfaces 13 a and 33 a and the inner surfaces 13 b and 33 b of the flanges 13 and 33. You may be comprised using. In this case, the thickness of each filler plate 53 may be adjusted so that the sum of the thicknesses of the two filler plates 53 is close to the plate thickness difference between the steel materials 1 and 3. Of course, the friction bonding structure 10 may be configured using the friction bonding member 5 only on the outer surfaces of the steel materials 1 and 3.

  Further, as shown in FIG. 1, the friction joining structure 10 according to the present invention is as shown in FIG. 8 in addition to the case of two-surface friction joining using the splice plate 7 and the friction joining member 5 as shown in FIG. Alternatively, the splicing plate 7 on the outer surfaces 13a and 33a of the flanges 13 and 33 may be omitted, and a one-surface friction bonding structure using only the friction bonding member 5 may be used. In this case, there is a merit that protrusions to the outer surfaces 13a and 33a of the flanges 13 and 33 which are the outer surfaces of the steel materials 1 and 3 can be suppressed.

  Further, the friction bonding member 5 and the friction bonding structure 10 using the same according to the present invention are not limited to the above-described embodiments, and are appropriately changed in design and the like without departing from the gist of the present invention. Of course, it may be.

  In general, when high-strength bolt friction joining using a splice plate is used as a column joint or beam joint, the product range of the number of bolt rows in the material axis direction and the number of bolts in the splice plate width direction is 2 × 2−2. 12 × 2 is used, the bolt diameter range is M16 to M22, and the plate thickness of the splice plate is generally 9 to 16 mm. It is good also as using the thing according to these dimensions.

1, 3 Steel 1a, 3a End 5 Friction joining member 7 Splice plate 9 High strength bolt 9a Nut 10 Friction joining structure 11, 31 Web 13, 33 Flange 41 Bolt hole 51 Splice plate 53 Filler plate 55 Bolt hole 57 Female screw hole 59 Screw 61 Counterbore

Claims (7)

In a friction joining member used for high-strength bolt friction joining of two steel materials having different thicknesses whose ends are butted against each other,
A splice plate disposed between the ends of the two steel materials and abutted against the surface of the steel material having a large plate thickness;
A filler plate interposed between the splice plate and the thin steel material, and fixed to the splice plate;
The splice plate and the filler plate are formed with bolt holes for inserting the high-strength bolts ,
The friction bonding member , wherein the filler plate is fixed to the splice plate with a screw . The screw, the friction connecting member according to claim 1, wherein the head is characterized in that it is housed in a counterbored hole formed in the filler plate. The friction joining member according to claim 1 or 2 , wherein the filler plate is made of high-strength steel having higher strength than the steel material. The friction joining member according to any one of claims 1 to 3 , wherein the contact surface of the splice plate and the filler plate that are in contact with each other is subjected to high friction treatment. Against the friction surface of the splicing plate and the filler plate which is facing each of the two steel claim 1-4, characterized in that high friction treatment by aluminum spraying is applied 1 The friction welding member according to Item. 6. A friction joining structure characterized in that two steel materials whose ends are abutted against each other are high-strength bolt friction joined by the friction joining member according to any one of claims 1 to 5 . A steel material characterized in that it is a plurality of steel materials whose ends are abutted against each other, and is high-strength bolt friction bonded by the friction bonding member according to any one of claims 1 to 5 .

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