JP5655500B2 - Damping structure of joint - Google Patents

Description

  The present invention relates to a vibration damping structure for a joint portion of a pair of members that relatively move in a predetermined direction.

  As a pair of members that can be moved relative to each other, for example, a building that is located above and below the building and has a hierarchy that moves relative to each other can be cited. In such a building, a truss structure is provided as a reinforcing part against shaking and the like, and a vibration is generated in the truss structure, for example, a part of the lower chord material, to suppress the vibration of the building. Some of them are provided with a friction damper. The friction damper has two members in a state in which a sliding material provided on one member that moves relative to each other and a mating plate provided on the other member are in pressure contact with each other with a predetermined pressure contact force between layers. When the two members are moved relative to each other and the sliding member and the mating plate slide, a substantially constant frictional force is generated regardless of the amplitude of the interlayer displacement of the building. And the damping structure of the junction part which absorbs energy by making this frictional force into damping force and reduces the shaking of a building is known (for example, refer patent document 1).

JP 2009-002118 A

However, such a conventional friction damper has the following problems.
At the time of the maximum interlayer displacement at the time of a large earthquake, the structure itself such as the building is greatly deformed, so that a large internal force is generated in the building. In such a case, if a larger external force is applied in the direction opposite to the deformation direction, the internal force is further increased by that much, and the structure becomes easily at the fracture limit strength. The damping force of the friction damper acts as an external force opposite to the deformation direction, and always generates a substantially constant damping force regardless of the magnitude of the interlayer displacement. In other words, according to the above-described friction damper, a large damping force is applied to the structure even under severe internal force at the time of maximum interlayer displacement. In this case, depending on the magnitude of the fracture limit strength of the structure, There exists a subject that there exists a possibility that may be damaged.

  The present invention has been made in view of the conventional problems as described above, and provides a damping structure for a joint that can prevent the structure from being damaged and can more effectively suppress vibration. The purpose is to do.

  In order to achieve such an object, a vibration damping structure for a joint according to the present invention includes a first member and a second member that move relative to each other in a predetermined direction, a third member that sandwiches the first member together with the second member, A pressure contact force that deforms by being overlapped and compressed together with the first member, the second member, and the third member, and biases a pressure contact force to the first member, the second member, and the third member. And the energy of the vibration is generated by a frictional force generated when the third member and the pressing force urging member move relative to the first member together with the second member by vibration. When the pressure contact force biasing member is absorbed and deforms from the relaxed direction to the compressed direction, the pressure force greatly increases when it starts to be deformed, and the pressure force biasing member is deformed in the direction in which the compression is relaxed. And the pressure when starting to deform The force is greatly reduced, and when the relative movement exceeds a predetermined range, the compression of the pressing force urging member is relieved as compared with the relative movement within the predetermined range. This is a characteristic damping structure for the joint.

  According to the vibration damping structure of such a joint, when the structure having the first member and the second member that move relative to each other vibrates and relative movement occurs between the first member and the second member, Since the frictional force is generated by the relative movement of the third member and the pressing force biasing member with respect to the first member together with the second member to absorb vibration energy, when the first member and the second member relatively move, It is possible to configure a friction damper that suppresses vibrations input to the structure.

  At this time, if relative movement occurs between the first member and the second member, an internal force is generated in each part of the structure to which the first member and the second member are attached. Such an internal force also acts on a portion where the first member and the second member are joined, and a larger internal force acts as the relative movement amount increases. Further, when the first member and the second member of the friction damper, which absorbs the vibration energy by the relative movement between the first member and the second member in order to absorb the energy of the large vibration, move the first member. An external force that deforms the structure in the direction opposite to the deformation direction acts on the portion where the member and the second member are joined. For this reason, since the external force acts on the site where the first member and the second member are attached in addition to the already generated internal force, a larger force acts. That is, the greater the vibration, the greater the force that acts on the part where the first member and the second member are attached.

  When the relative movement exceeds the predetermined range, the compression structure of the bonding member biasing member is more relaxed than when the relative movement is within the predetermined range. When the relative movement between the first member and the second member is within a predetermined range, the friction force generated by the compression of the pressing force urging member being relaxed when a large internal force is generated exceeding the predetermined range. It is reduced more than when the relative movement is performed. For this reason, it is possible to prevent the structure on which the first member and the second member are attached from being damaged by suppressing the force acting on the part to which the first member and the second member are attached. It is.

  At this time, when the pressing force urging member is deformed in a direction in which compression is relaxed, the pressing force is greatly reduced when it starts to deform. Therefore, the first member and the second member When the relative movement of the pressure force exceeds a predetermined range and the compression of the pressure-contact force biasing member is relaxed, that is, when the deformation starts to be relaxed, the pressure-contact force is greatly reduced. For this reason, when the amount of relative movement between the first member and the second member exceeds a predetermined range and the pressing force is reduced, the pressing force is greatly reduced immediately. For this reason, it is possible to significantly reduce the pressure contact force immediately after the relative movement amount between the first member and the second member exceeds a predetermined range, thereby preventing a large external force from acting on the structure.

  Further, when the relative movement between the first member and the second member exceeds the predetermined range and the direction of the relative movement is reversed, the state of the pressing force biasing member is changed from the state where the compression is relaxed. The deformation of the disc spring changes in the direction in which it is applied. The pressure contact force urging member has a characteristic that the pressure contact force greatly increases when it starts to be deformed from the relaxed direction to the compressed direction. Is compressed from the direction in which it is relaxed, that is, when it begins to deform from the direction in which it is relaxed to the direction in which it is compressed, the pressure contact force increases significantly. For this reason, the pressure contact force is greatly increased immediately after the relative movement between the first member and the second member is reversed and the deformation in the direction in which the compression force of the pressure contact force biasing member is relaxed is changed to the deformation in the more compressed direction. The vibration of the structure can be suppressed by increasing it. As described above, it is possible to avoid the damage to the structure and to suppress the vibration more effectively.

In the vibration damping structure of such a joint portion, between the first member and the third member, a sliding plate provided on one member side of the first member and the third member; Between the first member and the third member, provided on the other member side of the first member and the third member, the first member, the second member, and the third member are A friction plate that slides with the sliding plate when relatively moved to generate the frictional force, and a lower plate material interposed between the one member and the sliding plate, and the lower plate material is The pressing force urging member is formed narrower than a maximum region in which the pressing force biasing member slides in the relative movement direction, and the predetermined range is such that the third member does not move toward the first member in the relative movement direction. A range is desirable.
According to the vibration damping structure of such a joint, a sliding plate that slides on the friction plate when the first member, the second member, and the third member move relative to each other to generate a frictional force, and the opposite side of the friction plate The lower plate material is interposed between the first member and the second member, and the lower plate material is formed narrower than the maximum region in which the pressing force biasing member moves in the direction of relative movement. The member and the third member move relative to each other, and the third member protrudes outside the lower plate material. The part which protrudes outside from the lower plate material of the third member faces a part where the lower plate material is not provided on the back side of the sliding plate. Since the third member facing the portion where the lower plate material is not provided on the back side of the sliding plate moves to the first member side by the thickness of the lower plate material, the pressing force biasing member is moved by the amount of movement of the third member. The pressure is reduced by stretching. For this reason, when the relative movement of the first member, the second member, and the third member increases and the relative movement exceeds a predetermined range, the external force that acts on the structure and deforms the structure is suppressed to a smaller level. Vibration can be effectively suppressed.

In the vibration damping structure of such a joint portion, between the first member and the third member, a sliding plate provided on one member side of the first member and the third member; Between the first member and the third member, provided on the other member side of the first member and the third member, the first member, the second member, and the third member are A friction plate that slides with the sliding plate to generate the frictional force when moved relative to each other, the one member has a protruding portion that protrudes toward the other member, and the protruding portion is The pressing force biasing member is formed to be narrower than the maximum region where the pressing force biasing member slides in the direction of relative movement, and the predetermined range is such that the third member moves toward the first member in the direction of relative movement. It is good also as it being the range which does not.
According to such a vibration damping structure of the joint portion, the sliding plate that slides on the friction plate and generates a frictional force when the first member, the second member, and the third member move relative to each other, on the opposite side of the friction plate One member located on the other side is provided with a raised portion that protrudes on the other member side, and the raised portion is formed narrower than the maximum region in which the pressing force biasing member moves in the direction of relative movement. The first member, the second member, and the third member move relative to each other, and the third member protrudes outward from the raised portion. The part which protruded outside from the protruding part of the third member faces a part where the protruding part is not provided on the back side of the sliding plate. Since the third member facing the portion where the raised portion is not provided on the back side of the sliding plate moves to the first member side by the height of the raised portion, the pressing force biasing member is moved by the amount of movement of the third member. Is stretched to reduce the pressure contact force. For this reason, when the relative movement of the first member, the second member, and the third member becomes large and the relative movement exceeds a predetermined range, the external force that acts on the structure and deforms the structure is suppressed to a small level. Vibration can be effectively suppressed.

A vibration damping structure for such a joint, wherein the sliding plate is provided between the first member and the second member on a specific member side that is one of the first member and the second member. And between the first member and the second member, provided on the non-specific member side which is the other of the first member and the second member, and the first member, the second member, and the second member It is desirable to have a friction plate that slides on the sliding plate and generates the frictional force when the three members move relative to each other.
According to such a vibration suppression structure of the joint portion, the sliding plate and the friction plate are provided between the specific member and the non-specific member, that is, between the first member and the second member, and the pressure is applied. Since the pressing force is urged between the first member and the second member and the third member by the biasing member, the first member is on both sides of the second member side and the third member side, The sliding plate and the friction plate move relative to each other while sliding. For this reason, the frictional force generated by the relative movement can be increased, and the first member, the second member, and the second member in a more stable state without the frictional force generated on both sides with respect to the first member being largely biased. The third member can be moved relative to the third member.

In the vibration damping structure of such a joint, a lower plate material is interposed between the sliding plate provided between the first member and the second member and the specific member. desirable.
According to the vibration damping structure of such a joint portion, since the lower plate material is interposed between the sliding plate provided between the first member and the second member and the specific member, the first member and When the second member and the third member move relative to each other and the relative movement exceeds a predetermined range, the friction between the first member and the second member is not provided with the lower plate material on the back side of the sliding plate. The boards face each other. For this reason, at the position where the portion where the lower plate material is not provided on the back side of the sliding plate and the friction plate face each other, the pressure contact force biasing member is extended by the thickness of the lower plate material as a whole and the pressure contact force biasing member. The pressure contact force due to is reduced. For this reason, when the relative movement of the first member, the second member, and the third member becomes large and the relative movement exceeds a predetermined range, the external force that acts on the structure and deforms the structure is further suppressed. It is possible to suppress vibration more effectively.

In the vibration damping structure of such a joint, the specific member may have a raised portion that protrudes toward the non-specific member.
According to such a vibration control structure of the joint portion, the specific member located on the opposite side of the friction plate of the sliding plate provided between the first member and the second member is raised on the non-specific member side. Since the raised portion is provided, when the first member, the second member, and the third member move relative to each other and the friction plate moves largely relative to each other, the back side of the sliding plate is also between the first member and the second member. The friction plate and the portion where the raised portion is not provided face each other. For this reason, at the position where the portion where the raised portion is not provided on the back side of the sliding plate and the friction plate face each other, the pressure contact force urging member is extended by the height of the two raised portions as a whole, and the pressure contact force is relaxed. Is done. For this reason, when the relative movement of the first member, the second member, and the third member becomes large and the relative movement exceeds a predetermined range, the external force that acts on the structure and deforms the structure is further suppressed. It is possible to suppress vibration more effectively.

In the vibration damping structure of the joint portion, the first member is a pair of members opposed to each other with a space therebetween, and the second member is interposed between the pair of first members, The third member is provided on the opposite side to the second member with respect to the first member so as to sandwich the first member paired with the second member, and the third member sandwiches the second member. One member and the third member make a pair, and in each of the two member pairs that the first member and the third member make a pair, between the first member and the third member The first member and the third member between a sliding plate provided on one of the first member and the third member, and the first member and the third member When the first member, the second member, and the third member move relative to each other, A friction plate that slides on the sliding plate to generate the frictional force, at least one of the one member, and a lower plate member interposed between the sliding plate, and the lower plate member is The pressing force biasing member is formed narrower than a maximum region where the pressing force biasing member moves in the relative movement direction, and the predetermined range is such that the third member does not move toward the first member in the relative movement direction. A range is desirable.
According to the vibration damping structure of such a joint, in each of the two member pairs in which the first member and the third member make a pair, the first member and the third member Between the sliding plate provided on one member side of the third member and the first member and the third member, provided on the other member side of the first member and the third member, Since a friction plate is provided that generates frictional force by sliding with the sliding plate when the one member, the second member, and the third member move relative to each other, the pair of the first member, the second member, and the third member It is possible to generate a larger frictional force when and move relative to each other. Moreover, since the lower plate material is interposed between at least one of the first member and the third member and the sliding plate, the relative movement between the pair of the first member, the second member, and the third member is prevented. When the relative movement moves beyond a predetermined range, the compression of the pressing force biasing member can be relaxed more than when the relative movement moves within the predetermined range. At this time, if the lower plate member is interposed between each of the first member and the third member, it is possible to further reduce the compression of the pressing force biasing member.

In the vibration damping structure of the joint portion, the first member is a pair of members opposed to each other with a space therebetween, and the second member is interposed between the pair of first members, The third member is provided on the opposite side to the second member with respect to the first member so as to sandwich the first member paired with the second member, and the first member sandwiches the second member. A member and the third member make a pair, and in each of two member pairs in which the first member and the third member make a pair, between the first member and the third member Between the first member and the third member, and between the first member and the third member, a sliding plate provided on one member side of the first member and the third member. Provided on the other member side, when the first member, the second member, and the third member are relatively moved. A friction plate that slides on the sliding plate to generate the frictional force, and at least one of the one members has a protruding portion that protrudes toward the other member, and the protruding portion is The pressing force biasing member is formed narrower than a maximum region where the pressing force biasing member moves in the relative movement direction, and the predetermined range is such that the third member does not move toward the first member in the relative movement direction. It may be a range.
According to the vibration damping structure of such a joint, in each of the two member pairs in which the first member and the third member make a pair, the first member and the third member Between the sliding plate provided on one member side of the third member and the first member and the third member, provided on the other member side of the first member and the third member, Since a friction plate is provided that generates frictional force by sliding with the sliding plate when the one member, the second member, and the third member move relative to each other, the pair of the first member, the second member, and the third member It is possible to generate a larger frictional force when and move relative to each other. In addition, since at least one of the first member and the third member is provided with a raised portion that protrudes toward the other member, the relative movement between the pair of the first member, the second member, and the third member. When the relative movement moves beyond a predetermined range, it is possible to reduce the compression of the pressing force biasing member more than when moving within the predetermined range. At this time, if the raised portion is provided between each of the first member and the third member, it is possible to further reduce the compression of the pressing force biasing member.

Such a vibration control structure of the joint portion is one of the first member and the second member between the first member and the second member of each of the two member pairs. It becomes the other of the first member and the second member between the sliding plate provided on the specific member side and the first member and the second member of each of the two member pairs. A friction plate that is provided on a non-specific member side and that slides on the sliding plate to generate the frictional force when the first member, the second member, and the third member move relative to each other. It is desirable.
According to such a vibration control structure of the joint portion, the specific member that selects one of the first member and the second member between the first member and the second member of each of the two member pairs. And the other non-specific member, that is, between the first member and the second member, the sliding plate and the friction plate are provided, so the first member is the second member side and the third member. The sliding plate and the friction plate slide relative to each other on both sides. For this reason, the frictional force generated by the relative movement can be increased, and the first member, the second member, and the second member in a more stable state without the frictional force generated on both sides with respect to the first member being largely biased. It is possible to relatively move the third member.

In such a vibration damping structure of the joint portion, it is desirable that a lower plate material is interposed between the sliding plate provided on at least one of the specific members and the specific member.
According to the vibration damping structure of such a joint portion, since the lower plate material is interposed between the sliding plate provided on the specific member side and the specific member, the relative relationship is also provided between the two member pairs. When the movement exceeds a predetermined range, it is possible to suppress an external force that acts on the structure and deforms the structure. For this reason, it is possible to suppress the external force that acts on the structure body and deforms the structure body to be smaller and more effectively suppress the vibration.

In such a vibration damping structure of the joint portion, at least one of the specific members may be provided with a protruding portion that protrudes toward the non-specific member.
According to such a vibration control structure of the joint portion, the specific member is provided with the raised portion that protrudes toward the non-specific member side, so that the relative movement is also within a predetermined range between the two member pairs. If it exceeds, it is possible to suppress the external force that acts on the structure and deforms the structure. For this reason, it is possible to suppress the external force that acts on the structure body and deforms the structure body to be smaller and more effectively suppress the vibration.

In the vibration damping structure of the joint portion, the second member is the first separation member of the first separation member and the second separation member that are provided to be spaced apart from each other, and the first member Is preferably bridged between the first spacing member and the second spacing member and fixed to the second spacing member.
According to such a vibration control structure of the joint portion, the first separation member and the second separation member provided at a distance from the first separation member are spanned and fixed to the second separation member. When the amount of movement due to relative movement with the second member moves beyond a predetermined range, the external force that acts on the structure and deforms the structure is reduced, and vibration is more effectively suppressed. Is possible.

In the vibration damping structure of the joint portion, the second member is the first separation member of the first separation member and the second separation member that are provided to be spaced apart from each other, and forms a pair. The first member may be spanned between the first spacing member and the second spacing member and fixed to the second spacing member.
According to such a vibration damping structure of the joint portion, the second member that is bridged between the first separation member and the second separation member and is fixed to the second separation member, and the first separation member, When the relative movement of the moving member moves beyond a predetermined range, it is possible to reduce the external force that acts on the structure and deforms the structure. At this time, since the paired first members are spanned between the first and second spacing members, the first and second spacing members are relatively moved in a stable state. It is possible.

In the vibration damping structure of the joint portion, the pressure contact force biasing member is a disc spring in which a bolt that penetrates together with the first member, the second member, and the third member is tightened and compressed by a nut. The bolt is inserted into the pipe member, and when the first member, the second member, and the third member move relative to each other, a force for the relative movement is passed through the pipe member. It is desirable to be transmitted.
According to such a vibration damping structure of the joint portion, the disc spring in which the bolt that penetrates together with the first member, the second member, and the third member is tightened and compressed by the nut is the first member and the second member. And when a 3rd member moves exceeding a predetermined range, compression is relieve | moderated and a press-contact force falls. For this reason, the force which acts on the site | part to which the 1st member and the 2nd member are attached is reduced, and it avoids more reliably that the structure to which the 1st member and the 2nd member are attached is damaged. It is possible. In particular, by using a disc spring as the pressure-contacting force biasing member, when deforming from the relaxed direction to the compressing direction, the pressure-contacting force greatly increases due to the slight deformation at the start of deformation, and the compression is relaxed. When deforming in the direction to be deformed, it is possible to easily obtain the characteristic that the pressure contact force is greatly reduced by the slight deformation at the start of deformation.

  In addition, when the bolt is not inserted through the pipe material, the first member, the second member, and the third member pass through them when the first member, the second member, and the third member move relative to each other. When a bolt is touched, a shearing force is applied to the bolt, but the bolt is inserted into the pipe material as in the vibration damping structure of the joint, and the force for relative movement is transmitted through the pipe material. Since it did in this way, while being able to protect a volt | bolt, it is possible to transmit the force for relative movement more reliably.

  According to the present invention, there is provided a damping structure for a joint that can avoid damage to a structure and can more effectively suppress vibration.

It is a perspective view which shows an example of the state which incorporated the damping structure of the junction part which concerns on this invention in the pillar of a building. It is the schematic diagram which looked at the friction damper of this embodiment from the front. It is AA sectional drawing in FIG. FIG. 4 is an image diagram showing a positional relationship between the friction plate and the thin steel plate. It is a graph which shows the characteristic of the disk spring axial force with respect to the deformation | transformation of the expansion-contraction direction of a disk spring laminated body. FIG. 6A is a cross-sectional view showing a state where the third splice plate and the thin steel plate overlap on one side in the relative movement direction, and FIG. 6B shows the third splice plate on one side in the relative movement direction. FIG. 6C is a cross-sectional view showing a state in which the third splice plate and the thin steel plate overlap each other on the other side in the relative movement direction, and FIG. ) Is a cross-sectional view showing a state where the third splice plate has moved to the first splice plate side on the other side in the relative movement direction. It is a figure which shows the vibration energy absorption history characteristic of the friction damper of this embodiment. It is a transverse cross section showing the 1st modification of this embodiment. It is a transverse cross section showing the 2nd modification of this embodiment. It is a cross-sectional view which shows the 3rd modification of this embodiment.

Hereinafter, an embodiment of a vibration damping structure for a joint according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing an example of a state in which the vibration damping structure for a joint according to the present invention is incorporated in a building pillar. FIG. 2 is a schematic view of the friction damper of this embodiment as viewed from the front. 3 is a cross-sectional view taken along the line AA in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line BB in FIG.

  The vibration damping structure of the joint portion according to the present invention is a bolt joint portion in which columns, beams, braces, inter-columns, etc. provided between upper and lower layers such as a multi-storey building are joined with bolts in the horizontal direction. It has a friction damper that controls relative movement.

In the present embodiment, as shown in FIG. 1, an example in which the friction damper 20 is incorporated in the stud 10 will be described.
The stud 10 is arranged between the upper hierarchy 3 and the lower hierarchy 5 in a bridging direction. Further, the inter-column 10 is divided at a substantially central position in the spanning direction, which is the longitudinal direction thereof, and is joined while forming the friction damper 20 using the divided end portions.

  Specifically, as shown in FIGS. 2 to 4, the intermediate pillar 10 is divided so as to be spaced in the vertical direction, and the intermediate pillar lower part 11 as the first separation member and the intermediate pillar upper part 12 as the second separation member. And

  Two splice plates 21, 22 are provided on the front and back sides of the inter-column lower part 11 and the inter-column upper part 12. The two splice plates 21, 22 are provided between the inter-column lower part 11 and the inter-column upper part 12. , 22 are fixed to the upper portion 12 of the stud via a filler plate 25 with high strength bolts 16 and nuts 18.

  A gap corresponding to the thickness of the filler plate 25 is provided between the two splice plates 21, 22 arranged so as to face the lower part 11 of the stud and the lower part 11 of the stud. Between the two splice plates 21 and 22 and the lower part 11 of the stud, a sliding plate 26 as a sliding plate and a friction plate 28 are respectively interposed.

  Between the inter-column lower part 11 and each splice plate 21, 22, the sliding plate 26 is arranged on each splice plate 21, 22 side, and the friction plate 28 is arranged on the inter-column lower part 11 side. Here, the specific member which is one of the splicing plates 21 and 22 as the first member and the lower portion 11 of the stud as the second member and on which the sliding plate 26 is provided is the splice plate 21, 22 and the other non-specific member corresponds to the lower part 11 of the stud.

  Here, an organic friction material or an inorganic friction material can be used for the friction plate 28. Organic friction materials include thermosetting resin as a binder, fiber materials such as aramid fiber, glass fiber, vinylon fiber, carbon fiber, asbestos, friction modifiers such as cashew dust and lead, and filling with sulfite sulfate, etc. It is formed of a composite friction material comprising 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. On the other hand, the sliding plate 26 is formed of a material having corrosion resistance such as stainless steel or titanium described above.

  There is a third splice plate 23 provided to sandwich the first splice plate 21 together with the lower portion 11 of the interstice on the opposite side of the lower portion 11 of the first splice plate 21 which is one of the two splice plates 21 and 22. And a fourth splice plate 24 provided to sandwich the second splice plate 22 together with the lower pillar portion 11 on the opposite side of the lower pillar portion 11 of the second splice plate 22 which is the other of the two splice plates 21 and 22. have. The third splice plate 23 and the fourth splice plate 24 are overlapped only on the inter-column lower portion 11 side without being bridged on the inter-column upper portion 12 side. A friction plate 28 and a sliding plate 26 are also interposed between the third splice plate 23 and the first splice plate 21 and between the fourth splice plate 24 and the second splice plate 22, respectively. Here, the first splice plate 21 and the third splice plate 23, and the second splice plate 22 and the fourth splice plate 24 correspond to the member pair 20a.

  The first splice plate 21, the second splice plate 22, and the sliding plate 26 are provided with long holes 21a, 22a, and 26a that are long in the relative movement direction. Further, the circular pillar lower portion 11, the third splice plate 23, the fourth splice plate 24, and the friction plate 28 are provided with circular round holes 11a, 23a, 24a, and 28a.

  In the present embodiment, the first member that relatively moves in a predetermined direction corresponds to the first splice plate 21 and the second splice plate 22, and the second member corresponds to the lower part 11 of the stud. The third member sandwiching the first member together with the second member corresponds to the third splice plate 21 and the fourth splice plate 24.

  Between the third splice plate 23 and the first splice plate 21, a sliding plate 26 is disposed on the first splice plate 21 side, and a friction plate 28 is disposed on the third splice plate 23 side. Between the fourth splice plate 24 and the second splice plate 22, a sliding plate 26 is disposed on the second splice plate 22 side, and a friction plate 28 is disposed on the fourth splice plate 24 side.

Here, the thin steel plate 34 is formed narrower than the maximum region where the friction plate 28 slides in the relative movement direction and faces the sliding plate 26.
Further, between the sliding plate 26 on the side of the third splice plate 23 and the first splice plate 21, the first and second splice plates 21, 22 and the long holes 21a, 22a, 26a provided in the sliding plate 26 are inserted. A thin steel plate 34 having a thin plate shape as a lower plate material disposed on both sides of the long holes 21a, 22a, and 26a is interposed.

  The four splice plates 21, 22, 23, 24, the lower part of the stud 11, the four pairs of the sliding plate 26 and the friction plate 28 are provided with long holes 21a, 22a, 26a or round holes 11a, 23a, 24a. 28a, the high-strength bolt 16 inserted through the pipe member 17 is passed through. The lower part 11 of the stud, the third splice plate 23 and the fourth splice plate 24 are integrated by the pipe member 17 so as to move relative to the first splice plate 21 and the second splice plate 22.

  The high-strength bolt 16 passes through the disc spring laminated body 30 provided on the opposite side of the inter-column lower part 11 of the third splice plate 23 and overlaid with a plurality of disc springs 30a, and the nut 18 is screwed together. At this time, between the head 16a of the high strength bolt 16 and the second splice plate 22, between the first splice plate 21 and the disc spring laminate 30, and between the disc spring laminate 30 and the nut 18, respectively. A washer 45 is interposed. In addition, a bush 46 is provided between the disc spring laminate 30 and the high-strength bolt 16 to enter the inner peripheral side of the disc spring laminate 30 and regulate the position of each disc spring 30a. A gap is provided between the outer peripheral surface of the bush 46 and the inner peripheral surface of each disc spring 30a to such an extent that the disc spring 30a can be maintained in a stacked state.

  The disc spring laminate 30 is compressed when the nut 18 is screwed into the high-strength bolt 16 and tightened to generate a disc spring axial force. The disc spring axial force causes the four splice plates 21, 22, 23, A pressure contact force is urged between 24 and the lower part 11 of the stud. The first and second splice plates 21 and 22 fixed to the upper part 12 of the stud, and the lower part 11, the third and fourth splice plates 23 and 24, in the horizontal direction while being pressed by the disc spring laminate 30. It is configured to be relatively movable. When the first and second splice plates 21 and 22 are moved relative to the lower portion 11 of the stud, and the third and fourth splice plates 23 and 24, the space between the first and second splice plates 21 and 22 and the lower portion 11 of the stud. Between the first splice plate 21 and the third splice plate 23, and between the second splice plate 22 and the fourth splice plate 24, the friction plate 28 and the sliding plate 26 that face each other slide and friction. It is configured to generate power.

FIG. 5 is a graph showing the characteristics of the disc spring axial force with respect to the deformation in the expansion and contraction direction of the disc spring laminate.
The disc spring laminated body 30 has a load characteristic as shown in FIG. Specifically, the disc spring laminated body 30 is installed in a state of being deformed by a deformation amount δa with a predetermined compressive force. The disc spring laminated body 30 increases the disc spring axial force when the compressive force increases and the amount of compression increases from the state of a in which it is installed (a → b state).

  When the compression force decreases from the state of b where the amount of deformation of the disc spring laminated body 30 is maximum and the amount of compression decreases, the disc spring axial force decreases (state of b → c). When the compression force decreases and the compression force becomes zero, the deformation amount becomes zero, and the disc spring axial force also becomes zero (state c). In this way, the disc spring laminated body 30 has the inclined surfaces of the disc springs 30a positioned above and below when the compression is relaxed and the disc spring 30a becomes steep and when the disc spring 30a is further compressed and becomes slack. , And friction force is generated, so that even if the amount of deformation of the disc spring laminate 30 due to compression is the same, the disc spring laminate 30 is deformed in the compression direction and the compression of the disc spring laminate 30 is relaxed. The disc spring axial force is different from that in the case of deformation in the direction to be applied. For this reason, when the disk spring laminated body 30 starts to be compressed from a state where there is almost no deformation amount or is deformed in the relaxation direction, that is, when the deformation amount is changed to a larger direction, the disc spring axial force is greatly increased. Increase. In addition, when the deformation starts from the state of being deformed in the compression direction, that is, when the direction of deformation is reduced, the disc spring axial force is greatly reduced.

  The friction damper 20 that forms the vibration damping structure of the joint portion of the present embodiment has two splice plates that are fixed to the middle pillar lower portion 11 and the middle pillar upper portion 12 when there is no vibration input in the building in which the middle pillar 10 is provided. 21 and 22 are maintained in a fixed state with a static frictional force. At this time, the friction plate 28 interposed between the lower part 11 of the studs and the first splice plate 21 overlaps over the entire width in the relative movement direction of the thin steel plate 34 provided via the sliding plate 26. Therefore, the deformation of the disc spring laminated body 30 is maintained in the installed state, and the urging force by the disc spring laminated body 30 acts on the friction plate 28.

  When the vibration is input to the building, the friction plate 28 and the sliding plate 26 are moved by the axial force N of the high-strength bolt 16 by the disc spring laminated body 30 when shifting from the fixed state to the relative movement state with the dynamic friction force. A frictional force (sliding load) Ps is generated between them, and a vibration damping function by the frictional force is exhibited. At this time, internal force due to deformation is generated in each part of the building. Such internal force also acts on the upper hierarchy 3 and the lower hierarchy 5 to which the lower part 11 of the stud and the upper part 12 of the stud on which the two splice plates 21 and 22 are fixed are attached to each other. The greater the amount, the greater the internal force.

  6A is a cross-sectional view showing a state where the third splice plate and the thin steel plate are overlapped on one side in the relative movement direction, and FIG. 6B is a side view on the one side in the relative movement direction. Sectional drawing which shows the state which the 3rd splice plate moved to the 1st splice plate side, FIG.6 (c) is sectional drawing which shows the state with which a 3rd splice plate and a thin steel plate overlap in the other side of a relative movement direction, FIG. 6D is a cross-sectional view showing a state where the third splice plate has moved to the first splice plate side on the other side in the relative movement direction. FIG. 7 is a diagram showing the vibration energy absorption history characteristics of the friction damper of the present embodiment.

  The vibration input to the building is large, and the relative movement of the third splice plate 23 and the fourth splice plate 24 is caused by the relative movement of the lower part 11 of the stud and the upper part 12 of the stud 12 to which the first and second splice plates 21 and 22 are fixed. When the edge portions 23b and 24b in the moving direction move relatively beyond the edge portion 34a in the relative moving direction of the thin steel plate 34, the portion beyond the edge portion 34a of the thin steel plate 34 on the edge portion 23b side of the third splice plate 23 A gap S corresponding to the thickness of the thin steel plate 34 is generated between the first splice plate 21 and the sliding plate 26 as shown in FIG. 6A (state shown in FIG. 7C).

  When the inter-column lower portion 11 and the inter-column upper portion 12 further move relative to each other and the relative movement exceeds a predetermined range, as shown in FIG. 6B, the third splice plate pressed against the disc spring laminate 30 is obtained. 23, which protrudes from the edge 34 a of the thin steel plate 34, moves to the first splice plate 21 side by the thickness of the thin steel plate 34 due to the compression force of the disc spring laminate 30. At this time, the disc spring laminated body 30 compressed between the nut 18 and the third splice plate 23 via the washer 45 is formed of the thin steel plate 34 in which the third splice plate 23 has moved to the first splice plate 21 side. Compression is relaxed by the thickness. At this time, the disc spring laminated body 30 changes from a state where the axial force is stable to a relaxed state, and the disc spring axial force is greatly reduced with respect to a slight deformation amount of the disc spring laminated body 30 (FIG. 7D). State).

  Thereafter, when the lower part of the stud 11 and the first splice plates 21 and 22 move relative to each other and move to the position where they are displaced the most, the compression force of the disc spring laminate 30 is relaxed, and the disc spring axial force is greatly reduced. It is gradually reduced from the state of FIG. 7D (state of FIG. 7E).

  Thereafter, when the direction of vibration input to the building is reversed, the disc spring laminated body 30 starts to move relatively so that the portion overlapping the thin steel plate 34 becomes larger (state of FIG. 7F). That is, the disc spring laminated body 30 starts to be deformed in a more compressed direction from the state in which it is deformed in the relaxed direction. At this time, the disc spring laminated body 30 significantly increases the disc spring axial force with respect to a slight deformation amount when the disc spring laminated body 30 starts to deform in a more compressed direction (state of FIG. 7G).

  After that, when the inter-column lower part 11 and the first splice plate 21 are further moved relative to each other, the compression force of the disc spring laminated body 30 is increased, and the disc spring axial force is gradually increased from the greatly increased state (FIG. 7H). State).

  And if the disc spring laminated body 30 moves relatively to the position which overlaps with the whole thin steel plate 34, the disc spring axial force will become the maximum and will be stabilized (state of FIG. 7I).

  Thereafter, if the relative movement continues further, the disc spring axial force similarly changes on the opposite side in the relative movement direction of the thin steel plate 34. That is, when the opposite edge 23b side of the third splice plate 23 moves relative to the opposite edge 34b of the thin steel plate 34, the gap between the first splice plate 21 and the sliding plate 26 is as shown in FIG. A gap S corresponding to the thickness of the thin steel plate 34 as shown in FIG. 7 occurs (the state of FIG. 7J), and when the relative movement continues, as shown in FIG. 6D, the third splice plate 23 in the thin steel plate 34 The side protruding from the opposite edge 34 b moves to the first splice plate 21 side by the thickness of the thin steel plate 34. At this time, the disc spring laminated body 30 changes from a state where the axial force is stable to a relaxed state, and the disc spring axial force is greatly reduced with respect to a slight deformation amount of the disc spring laminated body 30 (FIG. 7K state). Thereafter, the disc spring axial force is gradually reduced during the relative movement in the same direction (the state of FIG. 7L).

  Thereafter, when the direction of vibration input to the building is reversed again (the state shown in FIG. 7M), the third splice plate 23 starts to move relatively so that the portion overlapping the thin steel plate 34 becomes larger, and is further compressed. Begin to deform in the direction. At this time, the disc spring laminated body 30 greatly increases the disc spring axial force with respect to a slight deformation amount in the direction in which the disc spring laminate 30 is compressed (state of FIG. 7N).

  Thereafter, when the inter-column lower part 11 and the inter-column upper part 12 are further moved relative to each other, the compression force of the disc spring laminate 30 is increased, and the disc spring axial force is gradually increased from the greatly increased state (the state of FIG. 7O). ). When the disc spring laminated body 30 moves relative to the entire thin steel plate 34 as shown in FIG. 6D, the disc spring axial force is maximized and stabilized (the state shown in FIG. 7P). . At this time, the relative movement between the lower part 11 and the upper part 12 due to the vibration input to the building is such that the portion protruding from the edges 34a, 34b of the thin steel plate 34 in the relative movement direction of the third splice plate 23 is the first splice. If it is a range that does not move to the plate side, the frictional force due to the maximum disc spring axial force acts to attenuate the vibration.

  In this embodiment, the predetermined range which becomes a boundary whether the compression force of the disc spring laminated body 30 is relieved is that the intermediate column lower portion 11 and the intermediate column upper portion 12 are relatively moved and the thin steel plate 34 is interposed. The splice plate (here, the third splice plate) on the outer side does not exceed the edges 34a, 34b of the thin steel plate 34 and the splice plate on the thin steel plate 34 side (here, the first splice plate 21). It corresponds to the range that does not move to the side. In other words, the range in which the state in which the splice plate on the side where the thin steel plate 34 is interposed can be maintained substantially parallel to the opposing splice plate corresponds to the predetermined range.

  According to the vibration suppression structure of the joint portion of the present embodiment, a building or the like having the lower part 11 of the intermediate pillar that moves relative to the upper part 12 and the upper part 12 to which the first and second splice plates 21 and 22 are fixed vibrates. When relative movement occurs between the lower part 11 and the upper part 12 of the stud, the third splice plate 23, the fourth splice plate 24 and the disc spring laminated body 30, the first and second splice plates 21 and 22, together with the lower part 11 of the stud, Since the frictional force is generated by the relative movement of the two and the vibration energy is absorbed, the friction damper 20 is configured to suppress the vibration input to the building or the like when the lower part 11 and the upper part 12 move relative to each other. Is possible.

  At this time, an internal force is generated in each part of the building to which the stud lower part 11 and the stud upper part 12 are attached. Such an internal force also acts on a portion where the upper part 12 and the lower part 11 of the intermediate column to which the first and second splice plates 21 and 22 are fixed, and the larger the relative movement amount, the larger the internal force becomes. Act. Furthermore, when the intermediate pillar lower portion 11 and the intermediate pillar upper portion 12 of the friction damper 20 that absorbs vibration energy by relative movement between the intermediate pillar lower portion 11 and the intermediate pillar upper portion 12 are relatively moved to absorb energy of large vibration, the intermediate pillar An external force that deforms the structure in the direction opposite to the deformation direction acts on the portion where the upper portion 12 and the lower portion 11 of the stud are joined. For this reason, in addition to the internal force which has already arisen, the external force also acts on the site | part to which the stud lower part 11 and the stud upper part 12 are attached, Therefore A bigger force acts. That is, the greater the vibration, the greater the force that acts on the part where the stud lower part 11 and the stud upper part 12 are attached.

  In the vibration damping structure of the joining member, the edge portions 23b and 23c of the third splice plate 23 pressed against the disc spring laminated body 30 by the relative movement of the inter-column upper portion 12 and the inter-column lower portion 11 are the edge portions 34a of the thin steel plate 34. When the third splice plate 23 cannot maintain the state substantially parallel to the first splice plate 21, the third splice plate 23 is maintained substantially parallel to the first splice plate 21. The compression of the disc spring laminated body 30 is further relaxed. For this reason, when a large internal force is generated when the relative movement between the lower pillar portion 11 and the upper pillar portion 12 exceeds the range in which the third splice plate 23 can maintain a state substantially parallel to the first splice plate 21, the disc spring lamination is performed. The compression of the body 30 is relaxed. At this time, since the pressure contact force between the sliding plate 26 and the friction plate 28 by the disc spring laminated body 30 is reduced, the generated friction force is reduced, and the third splice plate 23 is substantially parallel to the first splice plate 21. Therefore, the external force acting on the part to which the inter-column lower part 11 and the inter-column upper part 12 are attached is suppressed compared to when the relative movement is performed within the range in which the inter-column can be maintained. Therefore, it is possible to avoid that the building etc. to which the 1st and 2nd splice plates 21 and 22 and the stud lower part 11 are attached are damaged.

  At this time, when the disc spring laminated body 30 is deformed in a direction in which compression is relaxed, the first and second splice plates 21 have a characteristic that the pressure contact force is greatly reduced when the disc spring laminated body 30 starts to deform. , 22 and the lower part 11 of the studs 11 exceed the range where the edge 30b of the disc spring laminate 30 overlaps the thin steel plate 34, that is, when the compression of the disc spring laminate 30 is relaxed, that is, the direction in which it is relaxed. When it starts to deform, the pressure contact force is greatly reduced. For this reason, when the pressure contact force is reduced when the relative movement amount between the lower pillar portion 11 and the upper pillar portion 12 exceeds the range in which the third splice plate 23 can maintain a state substantially parallel to the first splice plate 21, The pressure contact force is greatly reduced. For this reason, the pressure contact force is greatly reduced immediately after the relative movement amount between the lower part 11 and the upper part 12 exceeds the range in which the third splice plate 23 can maintain a state substantially parallel to the first splice plate 21. Thus, it is possible to prevent a large external force from acting on the building or the like.

  In addition, when the relative movement between the lower part 11 and the upper part 12 exceeds the range in which the third splice plate 23 can maintain a state substantially parallel to the first splice plate 21, the relative movement direction is reversed. As for the state of the disc spring laminated body 30, the deformation | transformation of the disc spring laminated body 30 changes in the direction compressed from the state in which compression was eased. And since the disk spring laminated body 30 has the characteristic that a press-contact force increases significantly when it begins to deform | transform from the direction relaxed to the direction compressed, the direction in which the disk spring laminated body 30 is relaxed. The compression force is greatly increased when the material is compressed, that is, when it starts to deform from the relaxed direction to the compressed direction. For this reason, due to the relative movement between the lower part 11 and the upper part 12, the disc spring laminated body 30 greatly increases the pressure contact force immediately after it starts to be deformed from the relaxed direction to the compressed direction. It is possible to suppress vibration. That is, when the relative displacement is reduced, the internal force acting on the portion where the stud lower part 11 and the stud upper part 12 are fixed becomes small, so even if the external force by the friction damper 20 increases, Hard to influence. For this reason, while avoiding that a structure is damaged, it is possible to suppress a vibration more effectively.

  Further, in each member pair 20a in which the first splice plate 21 and the third splice plate 23 and the second splice plate 22 and the fourth splice plate 24 make a pair, the first splice plate 21 and the third splice plate 23, A sliding plate 26 is provided between the second splice plate 22 and the fourth splice plate 24 on the first splice plate 21 and the second splice plate 22 side, and the third splice plate 23 and the fourth splice plate 24 side. Since the friction plate 28 is provided and the sliding plate 26 and the friction plate 28 slide to generate frictional force when the intermediate column lower portion 11 and the intermediate column upper portion 12 move relative to each other, a frictional force is generated. It is possible to generate a greater frictional force when the relative movement of the.

  Moreover, since the thin steel plate 34 is interposed between the first splice plate 21 and the sliding plate 26, the relative movement between the lower pillar portion 11 and the upper pillar portion 12 becomes large, and the third splice plate 23 becomes the thin steel plate. By exceeding the position that overlaps 34, the third splice plate 23 cannot maintain a state substantially parallel to the first splice plate 21. Therefore, when the third splice plate 23 moves beyond the range in which the state in which the third splice plate 21 is substantially parallel can be maintained, the state in which the third splice plate 23 is substantially parallel to the first splice plate 21 is maintained. It is possible to relax the compression of the disc spring laminated body 30 more easily and reliably than when moving within a possible range.

  The first splice plate 21 and the third splice plate 23, and the second splice plate 22 and the fourth splice plate 24 respectively make a pair. Since the sliding plate 26 and the friction plate 28 are also provided between the lower portion 11, the first splice plate 21 and the second splice plate 22 are connected to the lower portion 11 side, the third splice plate 23 and the fourth splice plate. 24 slides relative to the sliding plate 26 and the friction plate 28 on both sides. Therefore, the frictional force generated by the relative movement can be increased to suppress a larger vibration, and the frictional force generated on both sides sandwiching each of the first splice plate 21 and the second splice plate 22 is large. It is possible to relatively move the first splice plate 21 and the second splice plate 22 and the lower part 11 of the stud in a more stable state without being biased.

  Further, since the first splice plate 21 and the second splice plate 22 are respectively bridged on the intermediate column lower portion 11 and the intermediate column upper portion 12 and fixed to the intermediate column upper portion 12, the intermediate column lower portion 11 and the intermediate column upper portion 12 are stabilized. It is possible to make a relative movement in the state, and when the relative movement exceeds the range where the third splice plate 23 overlaps the thin steel plate 34, the external force that acts on the building etc. and deforms the building etc. is kept small. It is possible.

  Further, the friction damper 20 is provided so that the direction in which each of the inter-column lower part 11 and the inter-column upper part 12 is fixed and the relative movement direction of the inter-column lower part 11 and the inter-column upper part 12 intersect with each other. Therefore, when the edge 30b of the disc spring laminated body 30 exceeds the range where it overlaps the thin steel plate 34 with respect to the relative movement in the direction intersecting the fixed direction, the building or the like is deformed by acting on the building or the like. It is possible to suppress the external force to be made small. For this reason, when the amount of movement due to the relative movement in the horizontal direction between the upper part 12 and the lower part 11 of the studs exceeds the range where the edge 30b of the disc spring laminate 30 overlaps the thin steel plate 34 using the studs 10, The external force that acts on the building or the like to deform the building or the like can be reduced.

  In addition, since the friction damper 20 of the present embodiment uses the disc spring laminated body 30 as a pressing force biasing member, when the deformation is changed from the relaxed direction to the compressed direction, the friction damper 20 is reduced to a slight deformation when starting to deform. Thus, when the pressure contact force is greatly increased and the deformation is performed in a direction in which the compression is relieved, it is possible to easily obtain the characteristic that the pressure contact force is greatly reduced by a slight deformation when the deformation starts.

  In addition, since the disc spring laminated body 30 is formed by laminating a plurality of disc springs 30a, the disc spring laminated body 30 is compressed from the direction to be relaxed by the friction generated at the portions of the laminated disc springs 30a that are in contact with each other. When deforming in the direction, the pressure contact force is greatly increased by a slight deformation at the start of deformation, and when deforming in a direction in which compression is relaxed, the pressure contact force is greatly decreased by a slight deformation at the start of deformation. It is possible to easily obtain the characteristics.

  In addition, when the first and second splice plates 21 and 22 and the lower column 11 and the third and fourth splice plates 23 and 24 move relative to each other, the first and second splice plates 21 and 22 and the lower column 11, When the third and fourth splice plates 23 and 24 come into contact with the high-strength bolts 16 penetrating them, a shearing force acts on the high-strength bolts 16, but as in the vibration damping structure of the joint portion in the above embodiment. Since the high strength bolt 16 is inserted into the pipe member 17 and the force for relative movement is transmitted via the pipe member 17, the high strength bolt 16 can be protected and relatively moved. Therefore, it is possible to transmit the force for more reliably.

  In the above embodiment, the example in which the thin steel plate 34 is provided only between the sliding plate 26 and the first splice plate 21 interposed between the first splice plate 21 and the third splice plate 23 has been described. This is not a limitation.

FIG. 8 is a cross-sectional view showing a first modification of the present embodiment.
In the friction damper 20 of the present embodiment, the example in which the thin steel plate 34 is provided between the sliding plate 26 on the third splice plate 23 side and the first splice plate 21 has been described. However, the friction damper 20 of the present embodiment shown in FIG. As in the first modification, a thin steel plate 34 may also be provided between the sliding plate 26 on the fourth splice plate 24 side and the second splice plate 22. In this case, the relative movement of the third splice plate 23 side and the fourth splice plate 24 side exceeds the range where the edge 30b of the disc spring laminate 30 overlaps the thin steel plate 34, and the fourth splice plate 24 When the state almost parallel to the two splice plates 22 can no longer be maintained, the extension amount of the disc spring laminate 30 is about twice the thickness of the thin steel plate 34, so that the compression can be further relaxed. . For this reason, it is possible to suppress the external force that acts on the building and deforms the building to be smaller and more effectively suppress the vibration.

  Further, the thin steel plate 34 is interposed between the sliding plate 26 and the first splice plate 21 interposed between the first splice plate 21 and the inter-column lower portion 11, and between the second splice plate 22 and the inter-column lower portion 11. The sliding plate 26 and the second splice plate 22 may be provided on either one or both of them. As described above, when the thin steel plates 34 are provided at a plurality of locations, the relative movement is extended when the edge 30b of the disc spring laminate 30 exceeds the range where the thin steel plates 34 overlap. Since the amount is double the number of intervening thin steel plates 34, the compression of the disc spring laminate 30 can be further relaxed. At this time, if the widths of the interposed thin steel plates 34 in the relative movement direction are different from each other, the amount by which the disc spring laminated body 30 is expanded when the relative movement amount is increased can be changed stepwise. Is possible.

FIG. 9 is a cross-sectional view showing a second modification of the friction damper of the present embodiment.
In the above-described embodiment, an example in which the member pair 20a composed of the first and third splice plates 21 and 23 and the member pair 20a composed of the second and fourth splice plates 22 and 24 are provided on both sides of the lower part 11 of the stud. However, it is not limited to this. For example, as shown in FIG. 9, the member pair 20 a made up of the first and third splice plates 21, 23 may be provided only on one side of the stud lower part 11.

  FIG. 10 is a cross-sectional view showing a third modification of the friction damper of the present embodiment. In the above embodiment, the example in which the thin steel plate 34 is interposed between the first splice plate 21 and the sliding plate 26 has been described, but the present invention is not limited to this. For example, as illustrated in FIG. 10, a raised portion 36 that protrudes toward the sliding plate 26 may be provided at a portion of the first splice plate 21 where the thin steel plate 34 is provided in the above embodiment. At this time, the raised portion 36 may be formed by being raised by press working or the like, or a raised portion 36 in which a plate member different from the intermediate pillar lower portion 11 is fixed by welding or the like is provided. May be.

  In this case, the raised portion 36 acts in the same manner as the thin steel plate 34, and when the lower portion 11 and the upper portion 12 move relatively, the raised portion 36 on the back side of the sliding plate 26 when the disc spring laminate 30 moves relatively greatly. It moves to the position where it overlaps with the part where is not provided. If it overlaps with a portion where the raised portion 36 does not exist on the back side of the sliding plate 26, the gap S where the raised portion 36 does not exist is compressed by the compression force of the disc spring laminate 30, and the disc spring laminate 30 is expanded. When the disc spring laminated body 30 is extended, the pressure contact force by the disc spring laminated body 30 is reduced. Therefore, when a large internal force is generated beyond the range where the edge 30b of the disc spring laminated body 30 overlaps the thin steel plate 34, It is possible to reduce the frictional force generated by the compression of the disc spring laminate 30 being relaxed. Even in the case where the pressure contact force of the disc spring laminate 30 is reduced by such a raised portion 36, the compression of the disc spring laminate 30 can be further relaxed by providing it at a plurality of locations, similarly to the thin steel plate 34. Is possible.

  In any of the above-described embodiments, the example in which the friction damper 20 is provided between the divided ends of the stud 10 where the fixing portion for the building or the like is located in the crossing direction intersecting the relative moving direction has been described. In addition, the friction damper 20 may be configured between, for example, the divided ends of a brace where a part attached to a building or the like is located. In this case, without placing the splice plate between the divided ends of the braces, the ends of the braces are arranged to overlap each other, and the friction plate and the sliding plate are interposed therebetween. The lower plate material is provided between one brace end and the sliding plate, or the raised portion is provided on one brace end side, so that both sides of the relative movement direction, that is, both sides of the sliding plate or the raised portion Then, the compression state of the disc spring laminated body 30 may be varied.

  In the said embodiment, although the example provided with the pipe member 17 penetrated by the high strength volt | bolt 16 was demonstrated, the pipe member 17 does not necessarily need to be provided.

  In the said embodiment, although the example using the disc spring laminated body 30 as a press-contact-force biasing member was demonstrated, the disc spring 30a may be a single body without laminating | stacking. In this case, when the disc spring 30a is deformed, the disc spring 30a is further compressed by friction generated between the edge 30b of the disc spring 30a and the portion where the edge 30b of the disc spring 30a is in contact. When deforming in the direction to be deformed, the pressure contact force is greatly increased by a slight deformation at the start of deformation, and when deforming in a direction in which compression is relaxed, the pressure contact force is reduced by a slight deformation at the start of deformation. It is possible to obtain characteristics that are greatly reduced.

  Moreover, in the said embodiment, although the example using the disc spring laminated body 30 was demonstrated as a press-contact force biasing member, it is not restricted to this, For example, it compresses and presses a press-contact force, such as a coil spring and a leaf | plate spring Any member can be used.

  The above embodiment is for facilitating the understanding of the present invention, and is not intended to limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and it is needless to say that the present invention includes equivalents thereof.

3 upper layer, 5 lower layer, 10 studs, 11 lower studs, 11a round hole,
12 upper part of stud, 16 high strength bolt, 16a head,
17 pipe member, 18 nut, 20 friction damper, 20a member pair,
21 1st splice plate, 21a long hole, 22 2nd splice plate,
22a long hole, 23 third splice plate, 23a round hole, 23b edge,
23c edge, 24 4th splice plate, 24a round hole, 24b edge,
25 filler plate, 26 sliding plate, 26a long hole, 28 friction plate, 28a round hole,
30 disc spring laminate, 30a disc spring, 30b edge, 34 sheet steel,
34a Edge of thin steel plate, 36 ridge, 36a edge of ridge, 45 washer,
46 Bush, S Air gap

Claims (14)

A first member and a second member that move relative to each other in a predetermined direction;
A third member sandwiching the first member together with the second member;
Pressure contact which deforms by being overlapped and compressed together with the first member, the second member and the third member, and biases the first member, the second member, and the third member. A force biasing member;
Have
The vibration force is absorbed by the frictional force generated when the third member and the pressing force biasing member move relative to the first member together with the second member due to vibration, and the pressing force biasing member When the deformation is changed from the relaxed direction to the compressed direction, the pressure contact force greatly increases when the deformation starts, and when the deformation is reduced, the pressure contact is increased when the deformation starts. Has the property of greatly reducing force,
When the relative movement exceeds a predetermined range, the compression of the pressure-contact force biasing member is relieved than when the relative movement is performed within the predetermined range. A vibration damping structure for a joint according to claim 1,
A sliding plate provided on one of the first member and the third member between the first member and the third member;
Between the first member and the third member, provided on the other member side of the first member and the third member, the first member, the second member, and the third member are A friction plate that slides with the sliding plate to generate the frictional force when relatively moved;
A lower plate material interposed between the one member and the sliding plate;
Have
The lower plate material is formed narrower than a maximum region in which the pressure contact force biasing member slides in the direction of relative movement,
The predetermined range is a range in which the third member does not move toward the first member in the direction of relative movement. A vibration damping structure for a joint according to claim 1,
A sliding plate provided on one of the first member and the third member between the first member and the third member;
Between the first member and the third member, provided on the other member side of the first member and the third member, the first member, the second member, and the third member are A friction plate that slides with the sliding plate to generate the frictional force when relatively moved;
Have
The one member has a raised portion that protrudes toward the other member,
The raised portion is formed narrower than the maximum region in which the pressing force biasing member slides in the direction of relative movement,
The predetermined range is a range in which the third member does not move toward the first member in the direction of relative movement. A vibration damping structure for a joint according to claim 2 or claim 3,
Between the first member and the second member, a sliding plate provided on the specific member side which is one of the first member and the second member;
Between the first member and the second member, the first member, the second member, and the third member are provided on the non-specific member side which is the other of the first member and the second member. A friction plate that slides with the sliding plate to generate the frictional force when
A damping structure for a joint, characterized by comprising: A vibration damping structure for a joint according to claim 4,
A vibration damping structure for a joint, wherein a lower plate material is interposed between the sliding plate provided between the first member and the second member and the specific member. A vibration damping structure for a joint according to claim 4,
The said specific member has the protruding part which protrudes in the said non-specific member side, The damping structure of the junction part characterized by the above-mentioned. A vibration damping structure for a joint according to claim 1,
The first member is a pair of members opposed to each other with a space therebetween, and the second member is interposed between the pair of first members,
The third member is provided on the opposite side to the second member with respect to the first member so as to sandwich the first member paired with the second member, and the third member sandwiches the second member. 1 member and the 3rd member make a pair,
In each of two member pairs in which the first member and the third member make a pair, one of the first member and the third member between the first member and the third member A sliding plate provided on the member side of
Between the first member and the third member, provided on the other member side of the first member and the third member, the first member, the second member, and the third member, A friction plate that slides with the sliding plate to generate the frictional force when moved relative to each other;
A lower plate material interposed between at least one of the one member and the sliding plate;
Have
The lower plate material is formed to be narrower than the maximum region in which the pressing force biasing member moves in the direction of the relative movement,
The predetermined range is a range in which the third member does not move toward the first member in the direction of relative movement. A vibration damping structure for a joint according to claim 1,
The first member is a pair of members opposed to each other with a space therebetween,
The second member is interposed between the paired first members,
The third member is provided on the opposite side to the second member with respect to the first member so as to sandwich the first member paired with the second member, and the first member sandwiches the second member. The member and the third member are paired;
In each of two member pairs in which the first member and the third member make a pair, one of the first member and the third member between the first member and the third member A sliding plate provided on the member side of
v Between the first member and the third member, provided on the other member side of the first member and the third member, the first member, the second member, and the third member A friction plate that slides with the sliding plate to generate the frictional force when
Have
At least one of the one members has a raised portion that protrudes toward the other member,
The raised portion is formed narrower than a maximum region in which the pressing force biasing member moves in the relative movement direction,
The predetermined range is a range in which the third member does not move toward the first member in the direction of relative movement. A vibration damping structure for a joint according to claim 7 or claim 8,
A sliding plate provided on a specific member side that selects one of the first member and the second member between the first member and the second member of each of the two member pairs; ,
Between the first member and the second member of each of the two member pairs, the first member and the second member are provided on the non-specific member side that is the other of the first member and the second member, A friction plate in which the friction force is generated by sliding with the sliding plate when the member, the second member, and the third member are relatively moved;
A damping structure for a joint, characterized by comprising: A vibration damping structure for a joint according to claim 9,
A lower plate material is interposed between the sliding plate provided on at least one of the specific members and the specific member side of the first member and the second member. Damping structure of the joint to be performed. A vibration damping structure for a joint according to claim 9,
At least one of the specific members is provided with a protruding portion that protrudes toward the non-specific member. A vibration damping structure for a joint according to any one of claims 2 to 6,
The second member is the first spacing member of a first spacing member and a second spacing member that are spaced apart from each other,
The damping structure for a joint portion, wherein the first member is bridged between the first spacing member and the second spacing member and is fixed to the second spacing member. A vibration damping structure for a joint according to any one of claims 7 to 11,
The second member is the first spacing member of a first spacing member and a second spacing member that are spaced apart from each other,
The joint damping structure, wherein the paired first members are respectively bridged between the first spacing member and the second spacing member and fixed to the second spacing member . A vibration damping structure for a joint according to any one of claims 1 to 13,
The pressure contact force biasing member is a disc spring in which a bolt that penetrates together with the first member, the second member, and the third member is compressed by being tightened with a nut.
The bolt is inserted through a pipe member,
When the first member, the second member, and the third member move relative to each other, the force for the relative movement is transmitted through the pipe member. Construction.