JP2005188277A - Bolt fastening structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase a friction coefficient between steel sheets for a structure and to prevent rusting for stabilizing a friction coefficient. <P>SOLUTION: In a bolt fastening structure 1 to give a desired press-fitted force with a bolt 5 piercing through the whole overlapped part of the steel sheets 2, 2 and a nut 6, a friction interposing plate 7 is placed between the steel sheets 2, 2 while at least the outer surface area of the interposing plate 7 is waterproofed by a non-conductive member 8. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a bolt fastening structure for a structural steel plate in a construction structure.

  In a construction structure, a conventional bolt fastening structure in which steel plates are coupled with high-strength bolts generally transmits a force by a frictional force and is not considered at all to slide. However, due to recent technological developments, a bolt fastening structure that has the idea of sliding to absorb energy (see Patent Documents 1 and 2) or the idea of sliding to increase the coefficient of friction (see Non-Patent Document 1). Has been devised. For example, sandwich friction plates between steel plates, tighten them with high strength bolts, and use a disc spring to keep the axial force of the high strength bolts constant. Mainly used as a damping damper for structural braces, etc. Bolt fastening structures are known. Further, when an aluminum plate is sandwiched between steel plates and these are fastened with a high tension bolt, the friction coefficient at the start of sliding is about 0.4, but there is an experimental result that it rises to about 0.9 within 1 mm of sliding.

Japanese Patent Laid-Open No. 08-193635 JP 2001-336560 A "Study on high-strength bolt friction sliding joint, part 1. Joint element experiment using aluminum alloy sheet for sliding material ”Architectural Institute of Japan, No.573, 2003.11

  For example, as shown in FIG. 22, a sliding plate 15 is provided on one side, and a friction plate 16 slidably superimposed on the sliding plate 15 is provided on the other side, and friction is applied to the contact surface between the sliding plate 15 and the friction plate 16. The high tension bolt 19 is provided with a disc spring 18 as an urging means that presses the material 17 in a pressing direction.

  However, in the bolt fastening structure, if the contact between the sliding plate 15 and the friction plate 16 is a contact between different materials, rust may be generated on the contact surface due to the galvanic action due to the difference in ionization tendency. . Due to the occurrence of rust, the friction coefficient changes, and there is a problem that a desired frictional resistance force and damping action cannot be obtained. In addition, the disc spring as the urging means is expensive, and there is a problem that when the disc springs are stacked, the thickness becomes thick and the diameter becomes large, making it difficult to use in the field.

  The problem to be solved is to dramatically increase the friction coefficient in the bolt fastening structure and to generate rust due to contact between different materials. In addition, it is difficult to make the entire structure compact at low cost.

  The gist of the bolt fastening structure according to the present invention is that a bolt fastening structure that provides a predetermined crimping force with a bolt and a nut that penetrates the overlapping portion of the structural steel plates in a construction structure, the friction between the structural steel plates. The intervening plate is interposed, and at least the outer peripheral surface of the friction interposed plate is waterproofed with a non-conductive member.

  Moreover, the gist of the bolt fastening structure according to the present invention is that a friction intermediate plate and a steel plate are overlapped with an elastic body and a pressing plate from the outside, and a bolt and a nut that penetrate all of them are predetermined. In the bolt fastening structure that provides the crimping force, at least the outer periphery of the contact portion of the overlapping portion is waterproofed with a non-conductive member.

Furthermore, the gist of the bolt fastening structure according to the present invention is that a predetermined pressure is applied by a bolt and a nut through which a friction intervening plate is interposed at an overlapping portion of structural steel plates in a construction structure. In the bolt fastening structure formed as described above, the friction intervening plate is coated with a viscoelastic body at least on the peripheral portion thereof, and a hole for inserting a bolt is provided at a substantially central portion of the plate, and at least the surface layer is made of aluminum. It is.

The friction interposed plate is a plate whose surface layer is a non-ferrous metal of aluminum, copper, lead, brass, titanium, zinc, nickel, thallium, stainless steel, silver, gold, platinum, indium, barium, or an alloy thereof, or at least At least one of the plates whose surface layer is ceramic of alumina, zirconia, titania, zinc oxide, mullite, silicon nitride, boron nitride, aluminum nitride, sialon, silicon carbide, titanium carbide, boride, sulfide To make;
An elastic body and a pressing plate are applied to the outside of the overlapping portion of the structural steel plates in the construction structure, and a predetermined pressure is applied by bolts and nuts penetrating all of them;
The elastic body is an alternately laminated body of non-metallic plates and metallic plates, or a non-metallic plate whose periphery is constrained by metal;
The bolt insertion hole in the friction interposed plate has a cylindrical rising portion;
The friction interposed plate is drawn out in a tape shape from a state wound in a roll shape and separated from a separating means in a direction perpendicular to the longitudinal direction;
The friction interposed plate is formed using an extruded aluminum plate as a base material;
Is included.

According to the above-described bolt fastening structure according to the present invention, the friction coefficient with the structural steel plate is greatly increased by sandwiching the friction intermediate plate (hereinafter the same) which is a non-ferrous metal plate or a ceramic plate. Furthermore, the waterproof treatment with a non-conductive member prevents the occurrence of rust between different materials.
In addition, the elastic body is, for example, a non-metallic plate made of rubber or urethane whose periphery is constrained by a metal, or an alternately laminated body of the non-metallic plate and the metallic plate. It becomes possible to use at a degree.
A clearance between the bolt and the hole is ensured by having the rising portion in the bolt insertion hole of the friction interposed plate.

In addition, the friction intervening plate can be easily handled by pulling out a roll wound plate.
By forming aluminum by extruding aluminum, for example, the friction interposed plate can be easily formed into a shape along a curved surface such as a steel pipe.

The bolt fastening structure of the present invention is a bolt fastening structure in which a predetermined crimping force is applied by a bolt and a nut penetrating an overlapping portion of structural steel plates in a construction structure, and a friction interposed plate is provided between the structural steel plates. In addition, since at least the outer peripheral surface of the friction interposed plate is waterproofed with a non-conductive member, the friction between the structural steel plate and the plate having at least a surface layer of non-ferrous metal or the plate having at least a surface layer of ceramics The coefficient is increased and the structural steel plate is firmly connected, and the anti-rust treatment is performed to make the friction coefficient constant, so that a connection structure with stable connection performance is obtained. Therefore, the number of bolts necessary for connecting the structural steel plates can be halved. In addition, since the yield strength does not decrease even after slipping, it can be used for plastic design as well as the yield behavior of steel.
For the purpose of absorbing energy by sliding, an elastic body and a push plate are required, but for the purpose of using only the fact that the frictional resistance increases by allowing only 1 mm of sliding. In this case, an elastic body and a pressing plate are not required, and the cost can be further reduced.
Further, in the bolt fastening structure in which the elastic body and the pressing plate are applied from the outside at the overlapping portion of the friction interposed plate and the steel plate, and a predetermined pressure is applied by the bolt and the nut that penetrate all of them, at least the overlapping By waterproofing the outer periphery of the contact portion with a non-conductive member, the connection performance can be maintained for a long time by the rust prevention treatment.

A non-metallic plate in which the elastic body is restrained by a metal such as rubber or urethane so that creep and relaxation do not occur and the material does not deteriorate so that a constant compressive force is maintained over a long period of time. It may be an alternate laminate of metal plates and metal plates. By doing so, it can be used at a high degree of stress, can be compact, and can be reduced in cost.
Of the contact surfaces of the friction intervening plate and the structural steel plate sandwiching it, or at least one side of the contact surface on the sliding surface side is roughened and the contact surface on the non-sliding surface side is integrated, Alternatively, the contact surface on the non-sliding surface side is bonded and integrated by resin adhesive, welding, or brazing, so that the distinction between the sliding surface and the non-sliding surface becomes clear and the workability during construction is improved. In addition, the friction coefficient can be increased.

If at least one of the structural steel plates is formed with a hole for penetrating a bolt as a long hole or a large hole so as to be slidable, a damping action can be imparted as a damper structure.
In a bolt fastening structure in which a friction-bonding plate is interposed between overlapping structural steel plates in a construction structure and a predetermined pressure is applied by bolts and nuts penetrating all of them, the friction-inserting plate is In addition, a viscoelastic body is applied to at least the peripheral portion thereof, a hole for inserting a bolt is provided in a substantially central portion of the plate, and at least the surface layer is aluminum, so that adhesion and corrosion resistance as a structure can be easily achieved. It is ensured and the entire structure can be stored compactly.

As the friction interposed plate, at least a surface layer is a non-ferrous metal of aluminum, copper, lead, brass, titanium, zinc, nickel, thallium, stainless steel, silver, gold, platinum, indium, barium, or an alloy thereof, or at least At least one of the plates whose surface layer is ceramic of alumina, zirconia, titania, zinc oxide, mullite, silicon nitride, boron nitride, aluminum nitride, sialon, silicon carbide, titanium carbide, boride, sulfide By making it, a high coefficient of friction can be obtained.
Since the bolt insertion hole in the friction interposed plate has a cylindrical rising portion, a gap between the bolt hole and the bolt is secured when the friction insertion plate is attached as an element of a building structure.
By winding the friction interposed plate in a roll shape, parts management and carrying become easy, and by pulling out in a tape shape, workability is improved in the assembly of the bolt fastening structure.

  A bolt fastening structure 1 according to the present invention will be described with reference to the drawings. As shown in FIGS. 1-1 (A), (B), (C), from the outside of the overlapping portion 2a of the structural steel plates 2, 2 having the required width and the required thickness in the construction structure, rubber or urethane An elastic body 3 made of a non-metallic plate such as a product, or an alternately laminated body (see FIG. 1-2) of the non-metallic plate and a metal plate (thin steel plate), and a metal pressing plate 4 The bolt (high-strength bolt) 5 and the nut 6 that pass through all of them are applied with a predetermined pressure.

  And, between the structural steel plates 2 and 2 to be connected, at least the surface layer is aluminum, copper, lead, brass, titanium, zinc, nickel, thallium, stainless steel, silver, gold, platinum, indium, barium, those Alloy non-ferrous metal plate or at least surface layer of alumina, zirconia, titania, zinc oxide, mullite, silicon nitride, boron nitride, aluminum nitride, sialon, silicon carbide, titanium carbide, boride, sulfide At least one of the plates made of ceramics is interposed as a friction intervening plate 7 (hereinafter the same).

  Further, at least the outer peripheral surface exposed to the outside of the surface of the friction interposed plate 7 sandwiched between the structural steel plates 2 and 2 is formed on a non-conductive member 8 such as a viscoelastic body, an adhesive material, or silicone. , Grease, asphalt, tar, acrylic, butyl rubber, etc. are adhered, adhered, or applied to be waterproofed.

  For example, as shown in FIG. 1-1 (C), the hole through which the bolt 5 is inserted has a difference in radius between the hole 8a and the body of the bolt 5, and becomes an arbitrarily set gap δ1. Yes.

According to such a bolt fastening structure 1, as shown in FIG. 2, if a predetermined pressure is applied by fastening with the high-strength bolt 5 and a nut 6 screwed to the high-strength bolt 5, the friction interposed plate 7 is In the case of JIS-H4000-A1100P and JIS-H4000-A1050P aluminum plates, an extremely high friction coefficient can be obtained. The solid line a in the figure is the case of the bolt fastening structure 1 according to the present invention, and the broken line b is the case of the bolt fastening structure according to the conventional example for comparison. Thus, the friction coefficient μ slightly slips to about 0.9 in the structure according to the present invention, and is about 0.45 in the structure according to the conventional example, which is about twice as wide. Further, even after the start of sliding, the conventional example has a reduced yield strength, but the present invention does not have a reduced yield strength. When a larger load is applied, the bolt body moves directly by the gap δ1, and the bolt body and the hole directly contact each other. Moreover, as shown in FIGS. 1-3, the both combined effect can also be taken out by pinching | interposing a several different friction intervention board 7. As shown in FIG.
As a bolt fastening structure 1a according to another embodiment, an elastic body and a push plate are not necessary as shown in FIG. Therefore, it is sufficient to fasten with ordinary bolts and nuts. In this case, the cost can be further reduced.

  Further, the waterproof treatment by the non-conductive member 8 prevents water from entering the friction surface and does not cause galvanic corrosion between different metals. Therefore, the fluctuation of the friction coefficient μ between the steel plate 2 and the friction interposed plate 7 is prevented, and a stable fastening structure is obtained.

  In addition, although the said elastic body 3 shall be a non-metallic board restrained with metal around rubber | gum, urethane, etc., a creep and relaxation should not arise so that fixed compression force may be maintained over a long period of time, For example, as shown in FIG. 3, a metal disc spring 3d, a spring washer, or a required pressure may be applied as shown in FIG.

  As another example, as shown in FIG. 4, as a rough surface treatment, for example, on the friction surface (also referred to as a sliding surface) on the friction intermediate plate 7 side between the structural steel plate 2 and the friction intermediate plate 7. Then, a blast treatment 9 is applied to make the surface uneven by spraying particles such as sand and glass. Further, an adhesive (resin adhesive such as epoxy resin) layer 10 is provided between the structural steel plate 2 and the friction interposed plate 7 on the non-slip surface opposite to the friction surface, so as to be strong. Stick. In addition, it may be integrated by welding and brazing.

  If it does in this way, installation of friction intervention board 7 will become easy. Further, the sliding surface, that is, the friction surface can be defined as the blasted surface, and as a result, the friction coefficient (static friction coefficient) μ increases. The connection between the structural steel plates 2 and 2 is strengthened.

  Further, as shown in FIG. 5, as a method of performing the blasting 9 on the friction surface, it is also proposed to apply the blasting 9 to both the non-slip surface of the structural steel plate 2 and both surfaces of the friction interposed plate 7.

  1, FIG. 3, FIG. 4 and FIG. 5 are examples in which the outer periphery of the contact portion of the friction interposed plate 7 is waterproofed. As another example, the friction interposed plate 7 is waterproofed as shown in FIG. For the treatment, not only the outer peripheral surface but also the friction intervening plate 7 is immersed in the storage tank of the non-conductive member 8 so that the entire surface is waterproofed. If it does in this way, adhesion work of nonelectroconductive member 8 will become easy, and rust prevention between structural steel plate 2 and friction intervention board 7 will become reliable and easy. And if a bolt is tightened, the nonelectroconductive member 8 will be naturally extruded to an outer peripheral part, and the interface of the structural steel plate 2 and the friction interposed plate 7 will contact.

  In the embodiment shown in FIGS. 7A and 7B, the structural steel plate 11 is formed with a hole for penetrating a bolt in a long hole (or large hole) 11a so as to be slidable in the longitudinal direction. The example of the bolt fastening structure 12 made into the structure is shown. When there is a gap δ2 in the longitudinal direction (sliding direction) between the high tension bolt 5 and the long hole 11a, a load Q (≧ P (set pressure) × μ) acts as shown in FIG. It slides on the friction surface and absorbs vibration energy corresponding to the area in the hysteresis line in the range of ± δ2. The gap δ2 is about 50 mm in the case of the seismic control structure, and is about 600 mm in the case of the seismic isolation structure.

  The friction coefficient μ of the friction surface is a stable friction coefficient because the friction interposed plate 7 is used as a friction plate and is urged by the elastic body 3 at a constant pressure. The connecting portion that is fastened with the high-strength bolt 5a and the nut 6a and does not use the elastic body 3 has a large crimping force and does not slide with the load Q.

  As an application example of such a bolt fastening structure 12, as shown in FIG. 9, there is an example in which the bolt fastening structure 12 is used at a joint portion between a column 20 and a beam 21. In the example of the bolt fastening structure 12 shown in FIG. 9, the right portion in the drawing also applies the crimping force with the elastic body 3 interposed therebetween, but the crimping force is applied at three places, and the left elongated hole 11a. Slide on the part. Further, as shown in FIG. 10, the brace material 22 between the beams 21 is an application of the bolt fastening structure 12.

  The bolt fastening structure 13 shown in FIG. 11 is for large vibrations having different frictional resistance, that is, for earthquakes, and for small vibrations, that is, for wind, and these are connected in series along the sliding direction. It will be. In FIGS. 11A and 11B, the diameter of the right high-strength bolt 5b is larger than the diameter of the left high-strength bolt 5 when the bolt receives a vibration of a certain magnitude or more. This is because 5b receives a shearing force. The area of the friction interposed plate 7a is set small. Further, the fastening by the nut 6b also tightens the elastic body 3 weakly. This right fastening structure portion is a wind damper structure.

  The radial difference between the diameter of the high-strength bolt 5b and the bolt insertion hole for it is δ1, and as shown in FIG. 12, it vibrates slightly in the range of ± δ1 with a load Q1 for wind. In the large vibration described above, the high-strength bolt 5b comes into contact with the bolt insertion hole and is restricted from moving, and the shearing force acts. The left side of the bolt fastening structure 13 is an earthquake damper structure, and slides within a moving range ± δ2 with a load Q2, as shown in FIG. The bolt fastening structure 13 provides a compact damper structure with a simple structure corresponding to two types of vibrations for wind and earthquake.

  The bolt fastening structure 14 shown in FIG. 13 is different from the bolt fastening structure 13 in the sliding direction between the structural steel plate 11 and the friction intervening plate 7a in the bolt fastening structure for micro vibration. This is an embodiment provided with a movement restricting means 26 for restricting the relative movement amount.

  In the pair of opposed structural steel plates 2 and 11 sandwiching the wind friction interposing plate 7a that absorbs small energy, the movement restricting means 26 is one structural steel plate in a direction perpendicular to the sliding direction. 11 and a restricting hole 2b which is perforated in the other structural steel plate 2 and into which the front end portion 27 of the protruding plate is loosely fitted, and the wall surface of the protruding plate 27 in the sliding direction. And a desired gap δ1 is provided between the control hole 2b and the wall surface of the restriction hole 2b.

  When the right steel plate 11 is moved by δ1 or more by an external force such as wind by the restricting means 26, the tip 27a comes into contact with the wall surface of the restricting hole 2b, and the force is transmitted from the steel plate 11 to the steel plate 2. The energy is absorbed by the earthquake bolt fastening structure on the left side. Thus, since the right bolt fastening structure receives a shearing force by the restricting means 26, the high strength bolt 5 does not need to be thicker than the bolt fastening structure 13, and the left structure The same thickness as the high strength bolt 5 is used.

  The bolt fastening structure 23 shown in FIG. 14 (A) has a bowl-shaped structure in addition to the elastic body 3 composed of an alternating laminate of non-metallic plates and metallic plates, compared to the bolt fastening structure 1 shown in FIG. This is an embodiment in which a tightening amount adjusting cup 28 is provided. Thereby, the tightening amount of the elastic body 3 by the bolt 5 and the nut 6 can be adjusted to a set value. The adjustment cup 28 is made of metal or plastic, and is provided with a bolt insertion hole in the center of the bottom plate. The height of the cup 28 is adjusted to a desired height. Therefore, when the nut 6 of the bolt fastening structure 23 is tightened and the cup 28 and the steel plate 2 are brought into contact with each other, the elastic body 3 is compressed by δ3 in the height direction compared to before fastening. Thereby, the compression force set to the steel plates 2 and 2 and the friction interposed plate 7 is given.

  The cup 28 has an inner diameter that is substantially equal to the outer diameter in a state where the elastic body 3 is compressed. Further, the bottom plate is not limited to the attachment state shown in FIG. Further, an adjustment cup may be formed by integrating the push plate 4 and the cup 28, and the push plate 4 may be deleted. Thereby, the number of parts is reduced by one.

  In addition, as another embodiment of the elastic body 3, for example, as shown in FIG. 14B, the elastic body 3 includes a ring-shaped rubber body 3b constrained by a metal pipe 3a. It may be fitted. A through hole 3c for inserting a bolt is provided in the central portion. The rubber body 3b is housed inside the pipe 3a and is partially fixed with an adhesive. Lid members 3e are provided above and below the rubber body 3b. Furthermore, as shown in FIG. 3C, a bowl-shaped rubber body 3b whose periphery is constrained by a bowl-shaped metal plate 3d with the bowl lying down may be fitted. A through hole 3c for inserting a bolt is provided at the center. The lower part of the rubber body 3b protrudes downward by δ5 from the lower end of the bowl-shaped metal plate 3d. In this case, the metal plate 3d and the rubber body 3b may be integrally molded, or may be formed separately and partially fixed with an adhesive or the like. In this case, the tightening amount adjusting cup 28 is replaced with the metal plate 3d and is not necessary.

  The bolt fastening structure 24 shown in FIG. 15 is an elastic member that is easily deformed such as rubber or urethane on the friction surface between the steel plate 2 and the friction interposed plate 7 with respect to the bolt fastening structure 1 shown in FIG. 25 is interposed by adhesion or the like. Due to the presence of the elastic member 25, the elastic member 25 is used for minute vibrations such as wind, and a large frictional force (friction coefficient μ = 0) between the steel plate 2 and the friction interposed plate 7 during an earthquake or the like. .9) works and becomes a bolted structure. Thus, a compact configuration can be achieved.

  As shown in FIG. 16, the bolt fastening structure 29 according to another embodiment is a construction structure in which the elastic body 3 and the push plate 4 are formed from the outside at the overlapping portion of the friction interposed plate 7 and the steel plates 2 and 11. In a bolt fastening structure in which a predetermined crimping force is applied by a bolt 5 and a nut 6 penetrating all of them to form a damper structure, at least the outer periphery of the contact portion of the overlapping portion is formed by a non-conductive member 8. This is an example of waterproofing. Thereby, the rust prevention of dissimilar metal plates is enabled with respect to the conventional bolt fastening structure.

  A bolt fastening structure 30 according to another embodiment of the present invention has a predetermined pressure bonding with bolts and nuts through which friction interposing plates 7b are interposed and overlapped with each other between structural steel plates in a construction structure. As shown in FIG. 17 (A), the friction interposed plate 7b is provided with a viscoelastic body 31 at least at the periphery thereof, and is provided with a bolt insertion hole 32 at a substantially central portion. At least the surface layer 33 is aluminum.

  For example, as shown in FIG. 17 (B), the friction interposed plate 7b moves the belt-shaped friction interposed plate 7 linearly, and the viscoelastic body 31 is continuously printed by a printing means such as hot melt. Printed on both sides and the periphery of the hole, holes 32 are perforated at a predetermined interval, and separation means 34 for separation is applied at predetermined intervals, and rolled up through a release paper. ,It is formed. And when using the friction intervention board 7b, it draws out in tape shape from the edge part of this roll state, and is separated from the separation means of the direction orthogonal to the longitudinal direction. FIG. 18 shows the state of use. The viscoelastic body 31 has an anticorrosive action similar to the nonconductive member 8.

  Further, as shown in FIGS. 19A and 19B, a cylindrical rising portion 32a is provided in the hole 32 of the friction interposed plate 7b. The rising portion 32a is protruded with an uneven ridge 32b on one side when the hole 32 is punched. The rising portion 32a secures a gap between the bolt and the hole, and the coefficient of friction (μ) also draws a gentle curve at the beginning of movement as shown by a solid line a in FIG.

  In FIG. 20, the friction intervening plate 7b is pre-adhered or adhered to the structural steel plate 2 at a predetermined position to produce a product. In this way, on-site assembly work is also made more efficient.

  21 (A) and 21 (B), for example, the friction interposed plate 7c is suitable for use on one side of the connecting member in the cylindrical steel pipe 34 shown in FIG. 21 (C). It is an example. In this cylindrical steel pipe 34, the aluminum plate formed by extrusion molding is used as a base material in the same manner as the curvature of the outer surface. The viscoelastic body 31 is applied to the periphery and the periphery of the bolt hole 32 on both sides of the extruded base material. Thereby, the friction interposed plate 7c for cylindrical steel pipes can be formed in large quantities at low cost.

  The bolt fastening structure according to the present invention can be widely applied to a joining portion of steel materials. Moreover, it can respond to an earthquake, a wind, etc. as a damper for damping a construction structure.

It is the front view (A) of the bolt fastening structure 1 which concerns on this invention, a top view (B), and sectional drawing (C) along the AB line. It is the front view (A) which shows the structural example of the said elastic body 3, and a bottom view (B). In the said bolt fastening structure 1, it is sectional drawing in case the nonmetallic board 7 is multiple types. It is a front view of the bolt fastening structure 1a which concerns on another Example. It is explanatory drawing which shows the relationship between the clearance gap (delta) in the bolt fastening structure 1, and the friction coefficient (micro | micron | mu). It is a front view of the bolt fastening structure which shows the example at the time of using the disk spring. It is a front view of the other Example which gave the blast process to the friction surface of the steel plate for structure and a nonferrous metal plate. It is a front view which concerns on the other Example at the time of performing the same blast process. FIG. 3 is a front view showing an example in which the friction intervention plate 7 is soaked and the entire surface is waterproofed with a nonconductive member 8. It is the front view (A) of the bolt fastening structure 12 in the case of using as a damper for the vibration suppression, and sectional drawing (B) along the CD line. It is explanatory drawing which shows the relationship between the clearance gap (delta) of the said bolt fastening structure 12, and the load Q. FIG. It is explanatory drawing which shows the usage example of the said bolt fastening structure. It is explanatory drawing which shows the usage example of the said bolt fastening structure 12. It is the front view (A) of the bolt fastening structure 13, and sectional drawing (B) along the EF line. It is explanatory drawing which shows the relationship between the clearance gap (delta) of the said bolt fastening structure 13, and the load Q. FIG. It is the front view (A) of the bolt fastening structure 14, and sectional drawing (B) along the GH line. They are the front view (A) which shows the use condition of the bolt fastening structure 23, and explanatory drawing (B), (C) which shows the other Example of the elastic body 3. FIG. The front view (A) of the bolt fastening structure 14 and an explanatory view (B) showing the relationship between the gap δ and the friction coefficient μ. It is the front view (A) of the bolt fastening structure 29 which concerns on the other Example, and sectional drawing (B) along the EF line. It is the perspective view (A) of the friction intervention board 7b used for the bolt fastening structure which concerns on the other Example, and explanatory drawing (B) which shows the state wound by roll shape. It is the front view (A) of the bolt fastening structure using the same friction intervention board 7b, and sectional drawing (B) of the position shown by the arrow of (A). It is the top view (A), longitudinal cross-sectional view (B), and explanatory drawing (C) which show the relationship between the clearance gap (delta) and the friction coefficient (mu) of the friction intervention board 7b in the other Example. It is the top view which made the product form by sticking the friction intervention board 7b to the structural steel plate 2. FIG. It is the top view (A), longitudinal cross-sectional view (B), and sectional drawing (C) which shows the use condition with respect to the steel pipe 33 of the friction intervention board 7c which concerns on another Example. It is a front view of the bolt fastening structure concerning a conventional example.

Explanation of symbols

1, 1a bolt fastening structure,
2,11 Structural steel plate,
3 elastic body, 3a pipe,
3b rubber body, 3c through-hole,
3d bowl-shaped metal plate, 3e lid member,
4 push plate,
5, 5a, 5b high-strength bolts,
6,6a nut,
7, 7a, 7b, 7c Friction interposed plate,
8 Non-conductive members,
9 Blasting,
10 Adhesive layer,
11a long hole,
12, 13, 14 bolt fastening structure,
15 Sliding board,
16 friction plates,
17 friction material,
18 Belleville spring,
19 High tension bolt,
20 pillars,
21 Beam,
22 brace material,
23, 24, 29, 30 Bolt fastening structure,
25 elastic member,
26 Regulatory means,
27 protruding plate,
28 adjustment cups,
31 Viscoelastic body,
32 holes, 32a rising part, 32b collar,
33 Surface,
34 Steel pipe.

Claims (9)

In the bolt fastening structure that gives a predetermined crimping force with the bolt and nut that penetrates the overlapping portion of the structural steel plates in the construction structure,
A friction interposed plate is interposed between the structural steel plates, and at least an outer peripheral surface of the friction interposed plate is waterproofed with a non-conductive member,
Bolt fastening structure characterized by In the bolt fastening structure that gives a predetermined crimping force with bolts and nuts penetrating all the friction interposed plates and steel plates joined to the friction interposed plates,
The outer periphery of at least the contact portion of the overlapping portion is waterproofed with a non-conductive member,
Bolt fastening structure. In a bolt fastening structure in which a predetermined crimping force is applied with bolts and nuts through which friction intervening plates are interposed and overlapped between structural steel plates in a construction structure,
The friction interposed plate is coated with a viscoelastic body at least at the peripheral portion thereof, a hole for bolt insertion is provided at a substantially central portion of the plate, and at least the surface layer is aluminum.
Bolt fastening structure. Friction intervening plate is a plate in which at least the surface layer is a non-ferrous metal of aluminum, copper, lead, brass, titanium, zinc, nickel, thallium, stainless steel, silver, gold, platinum, indium, barium, or an alloy thereof, or at least the surface layer Consisting of at least one of the plates made of alumina, zirconia, titania, zinc oxide, mullite, silicon nitride, boron nitride, aluminum nitride, sialon, silicon carbide, titanium carbide, boride, sulfide ceramics about,
The bolt fastening structure according to any one of claims 1 to 3. An elastic body and a pressing plate are applied to the outside of the overlapping portion of structural steel plates in a construction structure, and a predetermined pressure is applied with bolts and nuts penetrating all of them.
The bolt fastening structure according to any one of claims 1 to 4. The elastic body is an alternating laminate of non-metallic plates and metallic plates, or a non-metallic plate that is bound by metal around the periphery,
The bolt fastening structure according to claim 5. The bolt insertion hole in the friction interposed plate has a cylindrical rising portion,
The bolt fastening structure according to claim 3. The friction interposed plate is drawn out in a tape shape from a state wound in a roll shape, and is separated from a separating means in a direction perpendicular to the longitudinal direction thereof,
The bolt fastening structure according to claim 3. The friction interposed plate is formed using an extruded aluminum plate as a base material,
The bolt fastening structure according to claim 3.

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