JP2014152900A - Processing method of friction material of friction damper, and manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost of a friction damper through relaxation of safety cost relating to a setting value of frictional force by making variation of the frictional force generated at use start of the friction damper (initial use) small.SOLUTION: In order to attenuate vibration of a structure, a processing method stabilizes frictional force generated in a friction material of a friction damper from use start of the friction damper. Before use start of the friction damper, a slide surface on which the frictional force should be generated in the friction material is artificially slid by contacting with the plate surface of a predetermined plate.

Description

  The present invention relates to a method for treating a friction material for stabilizing a friction force generated in a friction material of a friction damper from the start of use (initial use) of the friction damper, and a friction damper. It is related with the manufacturing method of the friction material which can produce the stable frictional force from the time of use start (initial stage of use).

  A friction damper is known as a device for attenuating vibration of a structure such as a building frame. The friction damper is used, for example, by being interposed between a pair of members that reciprocally move relative to each other when the building frame vibrates. That is, the friction damper includes a first pressure contact plate fixed to one member of the frame by bolting or the like, and a second pressure contact plate fixed to the other member of the frame by bolting or the like. A plate-shaped sliding material is fixed to the first pressure contact plate with screws or the like, a plate-shaped friction material is fixed to the second pressure contact plate with screws or the like, and the friction material slides. The surface and the sliding surface of the sliding member are slidably contacted with each other with a predetermined pressing force. Therefore, at the time of the above-described reciprocal relative movement, these sliding surfaces slide to generate a frictional force, and the vibration of the building frame is attenuated by the frictional force (Patent Document 1).

Japanese Patent No. 4399373

  FIG. 1 is a graph obtained by the inventors of the present application through experiments and the like, and a graph of the relationship between the friction force and the cumulative amount of sliding that the damper exhibits immediately after the friction damper is attached to the building frame (at the start of use). It is. That is, the graph shows the transition of the magnitude of the frictional force in the process of repeating the reciprocating relative movement 20 times. Each white circle in the graph indicates the magnitude of the friction force in each forward path (average value for each forward path), and each black circle indicates the magnitude of the friction force in each return path (average value for each return path). Is shown. Incidentally, in this example, as described above, since the reciprocal relative movement is repeated 20 times, in the graph, 10 white circles and 10 black circles alternate with respect to the cumulative value of the sliding amount on the horizontal axis. Is plotted.

  Referring to FIG. 1, it can be seen that the frictional force is not constant but changes. Specifically, the frictional force increases from the initial value as the first frictional force and then decreases by a gentle curve, and finally is 20-30% larger than the initial value in the vicinity of the 20th relative movement. It has converged to a substantially constant value. As shown by the two-dot chain line in FIG. 1, the substantially constant value is generally maintained after the 20th time.

  Here, when the magnitude of the frictional force varies as described above, it is general to set a safety margin for the design value of the frictional force when designing the friction damper. However, there is a risk of increasing the cost with the setting of the safety allowance. For example, in the case of having the properties as shown in the graph of FIG. 1, considering the safety allowance, the friction damper is designed using the initial value, which is the minimum value of the friction force, as the design value of the friction force. Become. However, if the number of friction materials and sliding materials is not increased by the design value of the frictional force, it is difficult to achieve the desired damping performance. As a result, the cost increases by the increase in the amount. .

  On the other hand, when the graph of FIG. 1 is seen, after about 20 reciprocal relative movements, that is, after the cumulative sliding amount of the friction material becomes about 3200 mm or more, the frictional force is greater than the above initial value. However, it converges at a value larger by 20 to 30% and becomes a substantially constant value. Therefore, if the cumulative sliding amount of the friction material is set to 3200 mm or more in advance before the use of the friction damper, use a value that is 20-30% larger than the initial value as the design value of the friction force. Can do. As a result, it is considered that the number of friction materials and sliding materials can be reduced and costs can be reduced as compared with the case where initial values are used as design values.

  The present invention has been made in view of the above-described conventional problems, and its purpose is to reduce frictional force by reducing variation in frictional force that may occur at the start of use (initial use) of the friction damper. The purpose is to reduce the cost of the friction damper by reducing the safety allowance related to the design value.

In order to achieve this object, the invention shown in claim 1
A friction material processing method for stabilizing a friction force generated in a friction material of a friction damper to attenuate vibrations of a structure from the start of use of the friction damper,
Before the start of use of the friction damper, the sliding surface on which the friction force is to be generated in the friction material is brought into contact with a plate surface of a predetermined plate material to be artificially slid.

According to the first aspect of the present invention, the sliding surface of the friction material is artificially slid on the plate surface of the plate material before the use of the friction damper is started. Therefore, from the start of use of the friction damper (initial use), the sliding surface of the friction material can be made to be in a substantially smooth state. Can be small. As a result, the safety allowance related to the design value of the frictional force can be reduced, and the cost of the friction damper can be reduced.
In addition, since the sliding surface can be slid while the plate surface of the plate material is brought into surface contact with the sliding surface of the friction material, the sliding surface is easily smoothed out evenly.

Invention of Claim 2 is a processing method of the friction material of the friction damper of Claim 1, Comprising:
The friction damper is provided to be slidable with the sliding surface of the friction material, and has a sliding material that slides with respect to the sliding surface with the vibration,
As the plate material, a member of the same type as the sliding material is used.

  According to the second aspect of the present invention, the same material as the sliding material of the friction damper is used as the plate material to be slid on the sliding surface of the friction material. Therefore, the state of the sliding surface of the friction material can be finished in a state similar to a state where the friction material is leveled while actually being used as a part of the friction damper. As a result, the variation in the frictional force can be further reduced, and as a result, the safety allowance related to the design value of the frictional force can be further reduced.

Invention of Claim 3 is the processing method of the friction material of the friction damper of Claim 1 or 2, Comprising:
Before attaching the friction material to the structure to which the friction damper is to be attached, the sliding surface of the friction material is caused to slide against the plate surface of the plate material.

  According to the third aspect of the present invention, the sliding surface is slid on the plate surface of the plate material before the friction material is attached to the structure to which the friction damper is to be attached. Therefore, the sliding process can be performed in a place where there is equipment necessary for the sliding process such as a factory other than the construction site of the structure. As a result, the sliding process can be performed easily and reliably, and the variation in frictional force can be reliably reduced.

The invention shown in claim 4 is a method of manufacturing a friction material in which the frictional force generated in the friction material of the friction damper to stabilize the vibration of the structure is stabilized from the start of use of the friction damper,
Forming the friction material into a shape having a sliding surface on which the frictional force is to be generated;
A step of artificially sliding the sliding surface against a plate surface of a predetermined plate material before starting to use the friction damper.

According to the fourth aspect of the present invention, the sliding surface of the friction material is artificially slid on the plate surface of the plate material before the use of the friction damper is started. Therefore, it is possible to manufacture a friction material in which the sliding surface is leveled substantially smoothly, thereby reducing the variation in frictional force from the start of use of the friction damper. As a result, the safety margin related to the design value of the friction force can be reduced, and the cost of the friction damper can be reduced.
In addition, since the sliding surface can be slid while the plate surface of the plate material is brought into surface contact with the sliding surface of the friction material, the sliding surface is easily smoothed out evenly.

  According to the present invention, it is possible to reduce the cost of the friction damper through the relief of the safety allowance related to the design value of the friction force by reducing the variation of the friction force that may occur at the start of use (initial use) of the friction damper. it can.

It is a graph of the relationship between the frictional force which the damper shows immediately after attaching a friction damper to a building frame, and the cumulative value of sliding amount. 1 is a schematic elevation view of a friction damper 10 in which friction materials 25 and 35 according to the present embodiment are used. It is BB sectional drawing in FIG. 2A. 3 is a schematic cross-sectional view of friction materials 25 and 35. FIG. It is a graph of the relationship between the frictional force which the friction damper 10 using the friction materials 25 and 35 in which the preliminary | backup sliding process was made, and the cumulative value of sliding amount show. 4 is a schematic center longitudinal sectional view of an example of a preliminary sliding processing device 70. FIG. It is a general | schematic center longitudinal cross-sectional view of an example of the preliminary | backup sliding processing apparatus 70a.

=== This Embodiment ===
2A and 2B are schematic views of an example of the friction damper 10 provided with the friction members 25 and 35 according to the present embodiment. 2A is a schematic elevation view, and FIG. 2B is a cross-sectional view taken along line BB in FIG. 2A.
The friction damper 10 is used by being interposed between a pair of members 5a and 5b that reciprocally move relative to each other when the building frame 1 (corresponding to a structure) vibrates. That is, the friction damper 10 includes a first pressure contact plate 11 fixed to one member 5a of the building frame 1 by bolting or the like, and a second pressure contact plate fixed to the other member 5b of the frame 1 by bolting or the like. 21 and a second press contact plate 21, and a third press contact plate 31 that sandwiches the first press contact plate 11 from both surfaces of the plate 11 with a predetermined press contact force. Then, plate-like sliding materials 15 and 15 are fixed to both surfaces of the first press-contacting plate 11 with screws or the like, respectively, and in the second press-contacting plate 21 and the third press-contacting plate 31, the sliding materials 15 and 15 and Plate-like friction materials 25 and 35 are fixed to each plate surface facing each other with screws or the like, and the sliding surfaces 25a and 35a of the friction materials 25 and 35 and the sliding materials 15 and 15 are slid. The moving surfaces 15a and 15a are slidably contacted with each other with a predetermined pressing force. Therefore, at the time of the above-described reciprocal relative movement, the sliding surfaces 15a and 25a and the sliding surfaces 15a and 35a slide to generate a frictional force, and the vibration of the building frame 1 is attenuated by the frictional force.

  The above-mentioned pressure contact force is a second pressure formed by penetrating both the first through hole 13, the second pressure plate 21, and the friction material 25 penetrating all of the first pressure plate 11 and the sliding materials 15, 15. It is provided by screwing and tightening a nut 41n to a bolt 41b that is provided through the through hole 23 and the third through hole 33 that penetrates both the third pressure contact plate 31 and the friction material 35 at once. It has come to be. In order to stabilize the pressure contact force, disc springs 43, 43... Are interposed between the head of the bolt 41b and the third pressure contact plate 31, and between the nut 41n and the second pressure contact plate 21, respectively. However, the disc springs 43, 43. In addition, the first through hole 13 is formed as a long hole that is long in the direction of the above-described reciprocal relative movement, so that the reciprocal relative movement between the one member 5a and the other member 5b of the building frame 1 is achieved. Accordingly, the friction members 25 and 35 of the second press contact plate 21 and the third press contact plate 31 are slidable with respect to the sliding members 15 and 15 of the first press contact plate 11.

  As shown in the schematic cross-sectional view of FIG. 3, in this example, the friction members 25 and 35 have resin plates 25r and 35r as main bodies. That is, the friction members 25 and 35 are members having a two-layer structure in which the resin plates 25r and 35r are integrally joined to the highly rigid plate-like core members 25b and 35b in an inseparable manner, for example, as the core members 25b and 35b. Stainless steel is used. The resin plates 25r and 35r are filled with, for example, a fiber material such as aramid fiber, glass fiber, vinylon fiber, or carbon fiber using a thermosetting resin as a binder, a friction adjusting material such as cashew dust or lead, and a sulfate sulfate or the like. It is made of a friction material mainly composed of an agent. Examples of the thermosetting resin include phenol resin, melamine resin, furan resin, polyimide resin, DFK resin, guanamine resin, epoxy resin, xylene resin, silicone resin, diallyl phthalene resin, and unsaturated polyester resin. The plate surfaces 25ra and 35ra of the resin plates 25r and 35r function as the sliding surfaces 25a and 35a. However, the friction members 25 and 35 are not limited to members having any two-layer structure, and may be members having a single-layer structure including only the resin plates 25r and 35r, for example.

  On the other hand, the sliding materials 15 and 15 are metal plates, and are made of, for example, stainless steel or titanium.

  However, the combination of the materials of the main bodies 25r and 35r of the friction materials 25 and 35 and the sliding materials 15 and 15 is not limited to the above. That is, as long as a predetermined friction force can be generated between the main bodies 25r, 35r of the friction materials 25, 35 and the sliding materials 15, 15, other than the above, for example, the main bodies 25r, 35r of the friction materials 25, 35 and All of the sliding materials 15 and 15 may be metal plates as described above, or the main bodies 25r and 35r of the friction materials 25 and 35 and all of the sliding materials 15 and 15 are resin plates as described above. Also good. Also, examples of the material of the resin plate and the metal plate are not limited to the above, and materials other than the above may be used.

  In this example, a preliminary sliding process (hereinafter also referred to as a preliminary sliding process) is performed on the sliding surfaces 25a and 35a of the friction members 25 and 35 before the use of the friction damper 10 is started. Thus, at the start of use of the friction damper 10, the friction members 25 and 35 are in a state where the frictional force in FIG. 1 converges to a substantially constant convergence value. That is, FIG. 4 shows a graph of the relationship between the frictional force shown by the frictional damper 10 using the friction materials 25 and 35 subjected to the preliminary sliding treatment and the cumulative value of the sliding amount. 1, which is a substantially constant value from the relative movement, and is generally maintained at the convergence value thereafter.

  Therefore, the above converged value larger than the initial value can be used as the design value of the frictional force without using the initial value of FIG. 1, and as a result, the cost of the friction damper 10 can be reduced. That is, from the start of use of the friction damper 10 (initial use), the variation in the friction force can be reduced. As a result, the safety allowance related to the design value of the friction force can be reduced, and the cost can be reduced.

  Incidentally, the reason why the frictional force converges to a value larger than its initial value as the sliding amount increases as shown in the graph of FIG. 1 is considered as follows. First, the sliding surfaces 25a and 35a of the friction members 25 and 35 immediately after manufacture have relatively large irregularities. In such unevenness, the sliding surfaces 25a and 35a of the friction materials 25 and 35 are in contact with the sliding surfaces 15a and 15a of the sliding materials 15 and 15 only at the tops of the convex portions as in so-called point contact. Therefore, the frictional force immediately after manufacture is generally small. However, if the protrusion gradually wears away by sliding and the sliding surfaces 25a and 35a of the friction materials 25 and 35 become flatter, the sliding surfaces 25a and 35a of the friction materials 25 and 35 become smoother. Of these, the portions of the sliding members 15, 15 that are in contact with the sliding surfaces 15 a, 15 a gradually increase, thereby increasing the frictional force. As a result, the frictional force is considered to converge at a value larger than the initial value.

  In this example, the preliminary sliding process to the friction materials 25 and 35 is performed at the following timing. First, friction materials (bonding material, fiber material, friction adjusting material, filler, etc.) as the material of the resin plates 25r and 35r are formed on the stainless steel plates 25b and 35b as the core materials 25b and 35b of the friction materials 25 and 35. The powder is placed and heated and pressed to be hardened into a plate shape, whereby the friction materials 25 and 35 are formed as plate members having a two-layer structure. Then, a preliminary sliding process is performed on the friction materials 25 and 35 before the molded friction materials 25 and 35 are attached to the building frame 1 as a part of the friction damper 10. More specifically, the time point before the friction materials 25 and 35 are fixed to the second pressure contact plate 21 and the third pressure contact plate 31 of the friction damper 10 with screws or the like, that is, the friction materials 25 and 35 are in a single state. At this time, a preliminary sliding process is performed on the friction materials 25 and 35.

  FIG. 5 is a schematic center longitudinal sectional view of an example of a preliminary sliding processing device 70 that performs preliminary sliding processing on the friction materials 25 and 35 in a single state.

  For example, the preliminary sliding processing device 70 holds the plate member 72 guided so as to be reciprocally movable in the horizontal direction, and the friction members 25 and 35 so as to be immovable in the horizontal direction, while sliding the sliding surfaces 25a and 25a of the friction members 25 and 35. And a head portion 76 that presses 35a against the flat upper surface 72a of the plate member 72 with a predetermined pressing force. Then, while the sliding surfaces 25a, 35a of the friction members 25, 35 are pressed against the upper surface 72a of the plate member 72 with a constant pressing force, the plate member 72 is reciprocated in the horizontal direction by an appropriate actuator 73. The sliding surfaces 25a and 35a of the friction materials 25 and 35 are artificially slid on the upper surface 72a (corresponding to the plate surface) of the plate material 72.

  The head portion 76 has, for example, a hydraulic cylinder 76c as a main body, and the hydraulic cylinder 76c has a piston 76p that moves forward in the vertical direction and moves backward. And the holding | maintenance part 76h which hold | maintains the friction materials 25 and 35 immovably is integrally fixed to the lower surface of piston 76p. In this example, the holding portion 76h is a plate member having a predetermined thickness, and a concave portion 76ha1 having substantially the same planar shape as the outer shape of the friction materials 25 and 35 is formed on the lower surface 76ha of the holding portion 76h. Then, when the upper portions of the friction materials 25 and 35 are fitted into the concave portion 76ha1, the holding portion 76h holds the friction materials 25 and 35 immovably, so that the friction materials 25 and 35 have their sliding surfaces 25a. , 35a are held in a posture facing downward. Further, the adjustment of the downward pushing force of the piston 76p of the hydraulic cylinder 76c in the vertical direction is performed by controlling the pressure value of the hydraulic oil used for the operation of the hydraulic cylinder 76c with a pressure adjusting valve or the like.

  Below the plate material 72, a pedestal 74 for supporting the plate material 72 with a horizontal upper surface 74a is provided, and the plate material 72 is supported on the upper surface 74a of the pedestal 74 so as to be reciprocally movable in the horizontal direction via a flat roller bearing 75. Has been. When an external force for reciprocating movement is input from the actuator 73, the plate member 72 reciprocates with a predetermined amplitude in the horizontal direction.

In this example, the plate member 72 is composed of a member having a two-layer structure of an upper layer portion 72u and a lower layer portion 72d. The sliding surfaces 25a, 35a of the friction members 25, 35 are in contact with the upper surface 72ua of the upper layer portion 72u. The sliding members 15, 15 used in the actual friction damper 10 are used as the material of the upper layer portion 72u. The same kind of member is used. For example, in the actual friction damper 10, a stainless plate is often used for the sliding members 15, 15. Therefore, in this apparatus 70, a stainless plate is used for the upper layer portion 72 u of the plate member 72.
And if it does in this way, the state of the sliding surfaces 25a and 35a of the friction materials 25 and 35 is the same as the state where the friction materials 25 and 35 were actually used as a part of the friction damper 10. Thus, the variation in frictional force can be further reduced.

  However, the material of the upper layer portion 72u is not limited to a stainless plate, and other types of materials may be used. Incidentally, according to the plate material 72 having the two-layer structure as described above, when it is desired to change the type of the plate material 72 according to the types of the friction materials 25 and 35, only the upper layer portion 72u fixed to the lower layer portion 72d with screws or the like. Since it is possible to cope with the problem by exchanging, such a change can be easily performed. However, the plate material 72 having a two-layer structure is not limited to any two-layer structure, and may be a single layer or may be used as three or more layers.

  In addition, the set value of the pressing force for pressing the friction members 25 and 35 against the plate member 72 in the preliminary sliding process, and the cumulative amount of sliding determined by both the number of times the plate member 72 is reciprocated and the predetermined amplitude. The set value of the value is determined according to the type of the friction materials 25 and 35. Note that such a set value can be obtained by experiment, for example. That is, in the experiment, the plate material 72 is reciprocated in the horizontal direction with a predetermined amplitude while pressing the friction materials 25 and 35 against the plate material 72 with a predetermined value of the pressing force selected from the candidate values of a plurality of levels of pressing force. And each said setting value can be obtained by investigating the frequency | count of a reciprocating movement until the frictional force in a reciprocating movement converges substantially constant. The detection of the convergence of the frictional force during the reciprocating movement is performed by measuring the external force input from the actuator 73 when the plate member 72 is reciprocated, and the fluctuation range of the measured value of the external force is a predetermined value set in advance. This can be done by determining whether it is within the value.

  Incidentally, as in the example of FIG. 5, a spherical seat 76k may be interposed between the piston 76p and the holding portion 76h, and the piston 76p and the holding portion 76h may be connected via the spherical seat 76k. . In this way, the sliding surfaces 25a, 35a of the friction members 25, 35 can be pressed against the upper surface 72a of the plate member 72 with substantially equal pressure. However, the spherical seat 76k may be omitted.

  In the above example, the preliminary sliding process is performed when the manufactured friction members 25 and 35 are in a single state. However, the timing of performing the preliminary sliding process is not limited to the above. For example, the parts 11, 21, 31, 15, 15, 25, 35, 41b, 41n, 43, 43,... Of the friction damper 10 are assembled at an appropriate factory to obtain the state of the friction damper 10 shown in FIGS. After the assembly, the friction members 25 and 35 may be subjected to a preliminary sliding process in the state of the friction damper 10. In this case, for example, a preliminary sliding processing device 70a as shown in the schematic center longitudinal sectional view of FIG. 6 is prepared. That is, the preliminary sliding processing device 70 a is inserted between the first head portion 78 fixed to the first press contact plate 11, the second press contact plate 21, and the third press contact plate 31, and both of them. A second head portion 79 fixed to the actuator, and an actuator 78a for reciprocally moving the first head portion 78 relative to the second head portion 79. Then, by operating the actuator 78a to reciprocally move the first head part 78, the sliding surfaces 25a and 35a of the friction members 25 and 35 of the second press contact plate 21 and the third press contact plate 31 correspond to each other. The sliding surfaces 15a and 15a of the sliding materials 15 and 15 to slide are slid, and thereby the sliding surfaces 25a and 35a of the friction materials 25 and 35 are subjected to preliminary sliding treatment. That is, in this case, instead of the plate surface 72a of the plate material 72 for pre-sliding the sliding surfaces 25a, 35a of the friction materials 25, 35, the sliding surfaces 15a, 15a of the sliding materials 15, 15 are used. The preliminary sliding process will be performed using this.

  Further, as shown in FIG. 2A, the preliminary sliding process may be performed after the friction damper 10 is attached to the building frame 1 to be attached and at any timing before the use of the friction damper 10 is started. . Specifically, after the friction damper 10 is attached to the building frame 1, and at any timing before the friction damper 10 is activated for the first time after the building frame 1 is shaken by vibration due to seismic motion or wind load, the building frame 1 may be subjected to preliminary sliding treatment on the friction members 25 and 35 of the friction damper 10 by forcibly and artificially shaking the building frame 1 with a temporary actuator (not shown). In this case as well, the sliding surfaces 25a and 35a of the friction materials 25 and 35 of the second pressure contact plate 21 and the third pressure contact plate 31 and the sliding surfaces 15a and 15a of the corresponding sliding materials 15 and 15 are respectively provided. By sliding, the sliding surfaces 25a and 35a of the friction members 25 and 35 are subjected to preliminary sliding treatment. That is, also in this case, the sliding surfaces 15a and 15a of the sliding materials 15 and 15 are used in place of the plate surface 72a of the plate material 72 for pre-sliding the sliding surfaces 25a and 35a of the friction materials 25 and 35. Thus, preliminary sliding processing is performed.

=== Other Embodiments ===
As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment, The deformation | transformation as shown below is possible in the range which does not deviate from the summary.

  In the above-described embodiment, the so-called two-surface friction friction damper 10 is exemplified as the friction damper 10 to which the friction materials 25 and 35 subjected to the preliminary sliding treatment are applied. That is, the first pressure contact plate 11 provided with the sliding materials 15, 15 on both surfaces, the second pressure contact plate 21 provided with the friction material 25 facing the one sliding material 15, and the other sliding material 15. The friction damper 10 having the third pressure contact plate 31 provided with the friction material 35 facing the above is illustrated. However, the aspect of the friction damper to which the friction materials 25 and 35 are applied is not limited to this. For example, the friction damper may be a one-surface friction in which only the third pressure contact plate 31 among the first to third pressure contact plates 11, 21, 31 is omitted. Furthermore, a plurality of first pressure contact plates 11 and second pressure contact plates 21 or a plurality of first pressure contact plates 11 and third pressure contact plates 31 are laminated alternately, so that the sliding surface 15a is more than the above two-surface friction. You may use the said friction materials 25 and 35 with respect to the friction damper of many surface friction with many numbers.

In the above-described embodiment, the building frame 1 is illustrated as a structure whose vibration is to be damped by the friction damper 10, and the friction damper 10 is attached to the pair of members 5a and 5b that reciprocally move relative to each other in the building frame 1. However, the concept of the pair of members 5a and 5b is not limited to the members 5a and 5b obtained by dividing the brace as shown in FIG. For example, a member obtained by dividing a stud, a beam-to-column joint, a joint between beams, a partition wall, and the like is also included in the concept of the pair of members 5a and 5b.
Further, the concept of the structure is a concept of an object fixed directly or indirectly to the ground. Therefore, in addition to the building frame 1 described above, appropriate experimental equipment fixed to a foundation provided on the ground is also included in the concept of the structure. For example, when the experimental equipment and the foundation are connected by the friction damper 10 in order to attenuate the vibration of the experimental equipment, the friction material 25 that has been subjected to the preliminary sliding treatment according to the present invention is applied to the damper 10. 35 may be used.

1 building frame (structure), 5a one member, 5b the other member,
10 Friction damper,
11 First pressure contact plate, 13 First through hole, 15 Sliding material,
15a sliding surface,
21 second pressure contact plate, 23 second through hole, 25 friction material, 25a sliding surface,
25b core material, 25r resin plate, 25ra plate surface,
31 3rd press-contact plate, 33 3rd through-hole, 35 friction material, 35a sliding surface,
35b core material, 35r resin plate, 35ra plate surface,
41b bolt, 41n nut,
70 Preliminary sliding treatment device, 70a Preliminary sliding treatment device,
72 plate material, 72a upper surface (plate surface),
72u upper layer portion, 72d lower layer portion, 72ua upper surface (plate surface),
73 Actuator,
74 pedestal, 74a top surface,
75 flat roller bearings,
76 head,
76c hydraulic cylinder, 76h holding portion, 76ha bottom surface, 76ha1 recess,
76p piston,
76k spherical seat,
78 1st head part, 78a Actuator, 79 2nd head part,

Claims (4)

A friction material processing method for stabilizing a friction force generated in a friction material of a friction damper to attenuate vibrations of a structure from the start of use of the friction damper,
Before starting to use the friction damper, the friction damper is characterized in that the sliding surface on which the friction force should be generated in the friction member is caused to slide artificially by abutting against a plate surface of a predetermined plate member. Friction material processing method. It is a processing method of the friction material of the friction damper according to claim 1,
The friction damper is provided to be slidable with the sliding surface of the friction material, and has a sliding material that slides with respect to the sliding surface with the vibration,
A method of treating a friction material of a friction damper, wherein the same material as the sliding material is used as the plate material. It is a processing method of the friction material of the friction damper according to claim 1 or 2,
Before attaching the friction material to the structure to which the friction damper is to be attached, the sliding surface of the friction material is caused to slide against the plate surface of the plate material. Friction material processing method. A friction material manufacturing method in which a friction force generated in a friction material of a friction damper to stabilize vibrations of a structure is stabilized from the start of use of the friction damper,
Forming the friction material into a shape having a sliding surface on which the frictional force is to be generated;
And a step of artificially sliding the sliding surface in contact with a plate surface of a predetermined plate material before starting to use the friction damper. .

Images