JP7083127B2 - Friction damper and wall surface - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Law Meeting name: 68th Annual Meeting of the Wood Society of Japan, Date: March 14-16, 2018 Publication date of abstracts: March 5, 2018 Website of abstracts: http: // patent. wdc-jp. com / jwrs /

The present invention relates to a friction damper for damping vibration by interposing between two members that move relative to each other in a predetermined direction due to vibration, and a wall surface body provided with the friction damper.

In order to improve the seismic performance of a wooden building, it is effective to provide a damper between the two connected members to dampen the vibration. Most of the conventional dampers use industrial materials such as steel and rubber.

On the other hand, as a damper used for a wooden building, a damper using the same wood is also required. In Patent Document 1, the applicant can apply friction to various structures and can be retrofitted to the building. We are proposing a damper and a wall surface provided with this friction damper.

Japanese Unexamined Patent Publication No. 2015-215081

In the invention of Patent Document 1, the compression force using the indentation of the friction material in the direction perpendicular to the fiber utilizes the properties of the plastic region of wood, and good stress relaxation behavior was obtained, but extremely high temperature and high humidity. There was concern about a decrease in stress when exposed to conditions. In order to improve the reliability of long-term compression force maintenance, high reliability is required even under harsh conditions, and a more reliable friction damper has been required.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a highly reliable friction damper for maintaining a long-term compression force and a wall surface provided with the friction damper, using wood. And.

The invention of claim 1 of the present invention is to damp vibration by intervening between one member and the other member, which extend in a predetermined direction, face each other, and move relative to each other in a predetermined direction by vibration. It is provided with a friction material, a plate material, and a fastener, and the friction material is made of wood and is provided integrally with one member along a portion facing the other member to form a groove portion extending in a predetermined direction. Both sides of the groove are holding parts, both holding parts are provided with wooden orthogonal parts, and the plate material is made of metal and is provided integrally with the other member along the facing portion with respect to the one member, in a predetermined direction. An elongated hole is formed, which is inserted into a groove of the friction material and sandwiched between both holding portions, and a fastener is provided along the facing portion between one member and the other member, and the friction material is provided. It penetrates the long holes of both holding parts and the plate material, and tightens both holding parts in a direction that brings them closer to each other. It is characterized in that the fiber directions of the portions are parallel, and the direction in which the frictional force generated perpendicular to the pressing force of the fastener acts is parallel to the fiber direction of the portion other than the orthogonal portion of the friction material.

The invention of claim 2 of the present invention is to damp vibration by interposing between one wooden member and the other member, which extend in a predetermined direction, face each other, and move relative to each other in a predetermined direction by vibration. With two friction materials, a fastener, and an elongated hole formed in one member extending in a predetermined direction, both friction materials are made of wood, have orthogonal parts, and are integrated with the other member and face one member. It is provided along the portion, sandwiching one member, and a fastener is provided along the facing portion between the one member and the other member, and penetrates both friction materials and the elongated hole of the one member. Both friction materials are tightened in a direction that brings them closer to each other, and both friction materials press one member from both sides, and the direction in which the pressing force by the fastener works is parallel to the fiber direction at the orthogonal portion, and the fastener is used. It is characterized in that the direction in which the frictional force generated perpendicular to the pressing force is parallel to the fiber direction of the portion other than the orthogonal portion of the friction material.

The invention of claim 3 of the present invention is a plate material that extends in a predetermined direction, faces each other, and moves relative to each other in a predetermined direction by vibration, intervening between one member and the other member to attenuate the vibration. One member and the other member are made of wood, and each has a groove portion extending in a predetermined direction, and both sides of the groove portion are holding portions. Arranged so as to face each other, both sandwiching portions of one member are provided with wooden orthogonal portions, both sandwiching portions of the other member are provided with fixing holes, and the plate material is made of metal and has elongated holes extending in a predetermined direction and fixing holes. It is formed and is arranged in both grooves so as to straddle one member and the other member with the elongated hole on one member side and the fixing hole on the other member side, and is sandwiched between the two holding portions, and the fixture is placed on the other. It is provided in the member and is fixed by penetrating through the fixing hole of the other member and the fixing hole of the plate material. It penetrates and tightens both holding parts in a direction that brings them closer to each other, and both holding parts press the plate material from both sides, and the direction in which the pressing force by the fastener works and the fiber direction of the orthogonal part are parallel. It is a feature.

According to a fourth aspect of the present invention, in claims 1, 2 or 3, the orthogonal portion is a rod-shaped member extending in the direction in which the pressing force of the fastener acts, and the fastener is the axial direction of the rod-shaped member. It is characterized by penetrating into.

The invention of claim 5 of the present invention is characterized in that, in claims 1, 2 or 3, the orthogonal portions are plate-shaped members located on both sides of the fastener.

The invention of claim 6 of the present invention is characterized in that, in claim 2, 4 or 5, one of the members is provided with a metal reinforcing member, and the reinforcing member is provided with an elongated hole.

According to a second, fourth or fifth aspect of the present invention, one of the members includes a wooden reinforcing member, and the reinforcing member is made of plywood in which thin plates are laminated so that the fiber directions are crossed. It is characterized in that an elongated hole is provided in the plywood, and the surface direction of the plywood is parallel to the direction in which the pressing force applied by the fastener is applied.

According to a second, fourth or fifth aspect of the present invention, one of the members includes a wooden reinforcing member, the reinforcing member has an orthogonal portion, and the orthogonal portion is provided along an elongated hole. It is characterized in that the fiber direction of the orthogonal portion is parallel to the tightening direction of the fastener.

The invention of claim 9 of the present invention is characterized in that, in claim 1, 2, 4, 5, 6, 7 or 8, the friction material is subjected to an accelerated treatment.

The invention of claim 10 of the present invention comprises one member made of a face material, the other member made of a rectangular pillar material, and the friction damper according to claim 1, 2, 4, 5, 6, 7 or 8. One member is provided so as to cover substantially the entire inner peripheral side of the other member, and a friction damper is provided between the one member and the other member at intervals in the circumferential direction. ..

The invention of claim 11 of the present invention includes a frame body, one member and the other member made of a face material, and the friction damper according to claim 3, 4 or 5, and is spaced between the one member and the other member. A friction damper is provided, and one member and the other member are alternately connected in a predetermined direction to cover substantially the entire inner peripheral side of the frame.

According to the invention of claim 1 of the present invention, when one member and the other member move relative to each other due to vibration, a frictional force is generated between the wooden friction material and the metal plate material to attenuate the vibration. be able to. Both sandwiching portions of the friction material are provided with orthogonal portions, and the direction in which the pressing force by the fastener acts is parallel to the fiber direction in the orthogonal portions, so that a high stress residual ratio can be maintained even under harsh conditions. Also, wood is very vulnerable to shear in the direction perpendicular to the fibers. For this reason, the orthogonal portion may be sheared and broken by the force in the direction perpendicular to the fiber due to the frictional force, but the direction in which the frictional force generated orthogonal to the pressing force by the fastener acts is parallel to the fiber direction of the friction material. , The shear stress generated in the orthogonal portion is reduced, and the shear failure can be prevented.

According to the invention of claim 2 of the present invention, when one member and the other member move relative to each other due to vibration, a frictional force is generated between the wooden friction material and the wooden one member to attenuate the vibration. be able to. Since both friction materials have orthogonal portions and the direction in which the pressing force applied by the fastener acts is parallel to the fiber direction in the orthogonal portions, a high stress residual ratio can be maintained even under harsh conditions. Also, wood is very vulnerable to shear in the direction perpendicular to the fibers. For this reason, the orthogonal portion may be sheared and broken by the force in the direction perpendicular to the fiber due to the frictional force, but the direction in which the frictional force generated orthogonal to the pressing force by the fastener acts is parallel to the fiber direction of the friction material. , The shear stress generated in the orthogonal portion is reduced, and the shear failure can be prevented.

According to the third aspect of the present invention, when one member and the other member move relative to each other due to vibration, a frictional force is generated between one wooden member and a metal plate to attenuate the vibration. be able to. Since the metal plate material is arranged in both grooves so as to straddle one member and the other member, the direction in which the pressing force by the fastener acts is parallel to the fiber direction in the orthogonal portion. A high residual stress ratio is maintained and good friction behavior is obtained.

According to the invention of claim 4 of the present invention, the orthogonal portion is a rod-shaped member extending in the direction in which the pressing force of the fastener acts, and the fastener penetrates in the axial direction of the rod-shaped member. A compression force acts in the direction parallel to the wood fiber, and a high stress residual ratio can be maintained even under harsh conditions, and good frictional behavior can be obtained. Further, by forming the rod-shaped member, the orthogonal portion can be provided at an arbitrary place by inserting and adhering.

According to the fifth aspect of the present invention, since the orthogonal portion is a plate-shaped member located on both sides of the fastener, the pressing force acts in the direction parallel to the wood fiber, and the harsh conditions are met. In addition to being able to maintain a high residual stress ratio, good frictional behavior can be obtained.

According to the sixth aspect of the present invention, since the metal reinforcing member included in the one member is provided with an elongated hole, stress relaxation by the one member can be reduced.

According to the invention of claim 7 of the present invention, the reinforcing member provided on one side is made of plywood in which thin plates are laminated so that the fiber directions are crossed, and the reinforcing member is provided with elongated holes, and the surface direction of the plywood is tightened. Since it is parallel to the direction in which the pressing force of the attachment is applied, a high residual stress rate can be maintained even under harsh conditions.

According to the invention of claim 8 of the present invention, the reinforcing member provided on one side has an orthogonal portion, the orthogonal portion is provided along the elongated hole, and the fiber direction of the orthogonal portion is the tightening direction of the fastener. Since it is parallel to the wood fiber, a pressing force acts in the direction parallel to the wood fiber, and a high residual stress ratio can be maintained even under harsh conditions.

According to the invention of claim 9, since the friction material is subjected to the accelerated treatment, it is possible to provide a highly reliable friction damper capable of maintaining a high compression force for a long period of time.

According to the tenth aspect of the present invention, a wall surface body having high rigidity and high damping performance can be obtained. In particular, in a wooden building in which both the face material and the pillar material are made of wood, the friction damper of claim 1 and the friction damper of claim 2 can be appropriately selected to be applied to both a true wall and a large wall. Can be done. Further, in a factory, a face material and a friction material can be manufactured as a set as a vibration damping face material, and this can be inserted into a framework at the site and retrofitted to a building.

According to the invention of claim 11 of the present invention, a wall surface body having high rigidity and high damping performance can be obtained.

It is a schematic diagram of the main part of the first embodiment of the friction damper, (a) is a front view, and (b) is a plan view. It is a front view of the 1st Embodiment of a friction damper. It is a top view of the 1st Embodiment of a friction damper. It is a graph which shows the stress relaxation behavior in the indoor environment of the 1st Embodiment of a friction damper in comparison with the conventional product. It is a graph which shows the stress relaxation behavior in the high temperature and high humidity environment of the 1st Embodiment of a friction damper in comparison with the conventional product. It is a schematic diagram of the main part of the second embodiment of the friction damper, (a) is a front view, and (b) is a plan view. It is a front view of the 2nd Embodiment of a friction damper. It is a top view of the 2nd Embodiment of a friction damper. It is a graph which shows the displacement-load relationship of the 1st Embodiment of a friction damper. It is a graph which shows the displacement-load relationship of the 2nd Embodiment of a friction damper. It is a graph which shows the stress relaxation behavior in the dry-wet repetition environment of the 1st embodiment and the 2nd embodiment of a friction damper. It is a graph which shows the stress relaxation behavior in the high temperature and high humidity environment of the 1st embodiment and the 2nd embodiment of a friction damper. (A) is a front view of the wall surface body provided with the first embodiment of the friction damper, and (b) is a cross-sectional view of a main part. It is a graph which shows the apparent shear deformation angle-load relationship of the wall surface body provided with the 1st Embodiment of a friction damper. It is a front view of the 3rd Embodiment of a friction damper. It is a top view of the 3rd Embodiment of a friction damper. It is a front view of the 4th Embodiment of a friction damper. It is a top view of the 4th Embodiment of a friction damper. It is a graph which shows the displacement-load relationship of the 4th Embodiment of a friction damper. (A) is a front view of a wall surface body provided with a fourth embodiment of a friction damper, and (b) is a cross-sectional view of a main part. The other embodiment of the one-sided member in the third and fourth embodiments of the friction damper is shown, (a) is a plan view, and (b) is a front view. The other embodiment of the one-sided member in the third and fourth embodiments of the friction damper is shown, (a) is a side view, and (b) is a front view. The other embodiment of the one-sided member in the third and fourth embodiments of the friction damper is shown, (a) is a side view, and (b) is a front view. The other embodiment of the one-sided member in the third and fourth embodiments of the friction damper is shown, (a) is a plan view, and (b) is a front view. The other embodiment of the one-sided member in the third and fourth embodiments of the friction damper is shown, (a) is a plan view, and (b) is a front view. It is a front view of the 5th Embodiment of a friction damper. It is a vertical sectional view of the 5th Embodiment of a friction damper. It is a graph which shows the displacement-load relationship of the 5th Embodiment of a friction damper. (A) is a front view of a wall surface body provided with a fifth embodiment of a friction damper, and (b) is a cross-sectional view of a main part. It is a graph which shows the apparent shear deformation angle-load relationship of the wall surface body provided with the 5th Embodiment of a friction damper. It is a graph which shows the effect of the acceleration process and the re-tightening of the first embodiment of a friction damper by stress relaxation behavior. It is a comparison between the first embodiment of the friction damper and the conventional product, and is a graph which shows the effect of the accelerated treatment and the retightening by the stress relaxation behavior. It is a top view of the sixth embodiment of a friction damper. The sixth embodiment of the friction damper is shown, (a) is a side view, (b) is a front view. It is a front view of the wall surface body provided with the 6th Embodiment of a friction damper. It is a top view of the 7th Embodiment of a friction damper. It is a front view of the wall surface body which provided the 7th Embodiment of a friction damper.

The specific configuration of the friction damper and the wall surface body of the present invention will be described with reference to each drawing. The friction damper intervenes between one member and the other member, which moves relative to each other in a predetermined direction by vibration, and damps the vibration. In the seventh embodiment, one member is a wooden face material 4, the other member is a wooden pillar material 5, the face material 4 is parallel to the longitudinal direction of the pillar material 5, and the end face of the face material 4 is the pillar material 5. The case where the face material 4 and the pillar material 5 move relative to each other in the longitudinal direction of the pillar material 5 will be described as an example.

First, the first embodiment of the friction damper will be described. As shown in FIGS. 2 and 3, the first embodiment of the friction damper includes a friction material 1, a plate material 2, and a fastener 3.
The friction material 1 is made of wood, has a rectangular cross section, and extends in the longitudinal direction of the pillar material 5. As shown in the schematic view of FIG. 1, the friction material 1 is tightened in a direction parallel to the direction in which the frictional force acts, in other words, tightening. It has a fiber direction in a direction orthogonal to the compression direction by the tool 3. Then, along the facing portion with respect to the pillar material 5, a receiving plate 6 made of a rectangular steel plate is sandwiched and fixed to one surface of the face material 4 (hereinafter, the side to which the friction material 1 is fixed is set as the front side, and the side thereof is defined as the front side. The other side is the back side). More specifically, the friction material 1 is fixed by screwing the friction material 1 from the back side at a position closer to the pillar material 5 on the front side of the receiving plate 6, and the receiving material 7 is applied to the back side of the face material 4 to attach the receiving plate 6. It is fixed to the face material 4 by screwing it from the front side. Further, the friction material 1 is provided with three insertion holes 14 penetrating the front and back at equal intervals, and an orthogonal portion 13 is inserted and adhered to each of the insertion holes 14. In the first embodiment, the orthogonal portion 13 is a rod-shaped member extending in the direction in which the clamping force by the fastener 3 acts, and as shown in the schematic diagram of FIG. 1, the orthogonal portion 13 is the extending direction (friction) of the groove portion 11. It has a fiber direction in a direction orthogonal to the direction in which the force acts), in other words, in a direction parallel to the direction of the pressing force by the fastener 3. A bolt hole is provided in the center of the orthogonal portion 13 in the front and back directions. A groove portion 11 extending in the longitudinal direction of the pillar material 5 is formed on the surface of the friction material 1 on the pillar material 5 side, and both sides (front side and back side) of the groove portion 11 are holding portions 12. Both the front side and the back side sandwiching portions 12 include orthogonal portions 13 which are divided into front side and back side by the groove portion 11. On the surface of the pillar 5 on the face 4 side, one side of the L-shaped member 22 made of steel and extending in the longitudinal direction of the pillar 5 is fixed by screwing, and is parallel to the face 4 from the pillar 5. The other side extending is the plate material 2.
The plate material 2 is inserted into the groove portion 11 of the friction material 1 and is sandwiched between both holding portions 12. Further, as shown in FIG. 2, the plate material 2 is formed with elongated holes 21 extending in the longitudinal direction of the pillar member 5, but the length of the elongated holes 21 is shorter than the length of the friction material 1 and is longer. The hole 21 is hidden by the friction material 1. A fastener 3 composed of three bolts 3 is inserted through the bolt hole of the orthogonal portion 13, the bolt hole of the receiving plate 6, and the elongated hole 21 of the plate material 2, and is inserted into the tip of the bolt 3. The washer 33 is inserted, and the nut 34 is further screwed in and tightened. The washer 33 is a circular steel plate having substantially the same diameter as the orthogonal portion 13. By tightening the bolt 3, a pressing force is generated in the front and back directions, both holding portions 12 are urged in a direction approaching each other, and both holding portions 12 press the plate material 2 from both sides. The pressing force is a normal force generated on the contact surface between the friction material 1 and the plate material 2, and the frictional force is proportional to the normal force.

In the first embodiment of the friction damper configured as described above, when the face material 4 and the pillar material 5 move relative to each other due to vibration, a frictional force is generated between the wooden friction material 1 and the steel plate material 2. Therefore, the vibration can be damped. Since both sandwiching portions 12 of the friction material 1 are provided with orthogonal portions 13 and the direction in which the pressing force applied by the fastener 3 acts is parallel to the fiber direction of the orthogonal portions 13, a high stress residual ratio can be obtained even under harsh conditions. Can be maintained. At the same time, since the direction in which the frictional force generated orthogonal to the pressing force of the fastener 3 acts is parallel to the fiber direction of the friction material 1, the shear stress generated in the orthogonal portion 13 is reduced, and shear failure can be prevented. ..

In the conventional friction damper, the direction in which the pressing force acts and the direction of the wood fiber of the friction material 1 are perpendicular to each other. A reliability test for maintaining the compression force was carried out by comparing the conventional friction damper that compresses in the vertical direction of the fiber with the first embodiment of the friction damper of the present application that compresses in the parallel direction of the fiber. As a result, as shown in FIG. 4 in an indoor environment, the friction damper of the present invention still maintains a stress residual rate of about 80% even after 150 days have passed from the start of the test, and the conventional friction damper has a stress residual rate from the start of the test. The stress residual rate was halved in 50 days. Then, after performing a so-called accelerated treatment in which the friction damper is placed in an extremely high temperature and high humidity state of room temperature of 40 ° C. and humidity of 87% for 4 days, it is placed in an environment of room temperature of 20 ° C. and humidity of 65% to perform a reliability test for maintaining the compression force. Was carried out. As a result, as shown in FIG. 5, in the conventional friction damper for vertical fiber compression, the residual stress rate was significantly reduced to 20% after the accelerated treatment. On the other hand, the friction damper of the present invention did not show an extreme decrease. From this result, it was clarified that compression in the direction parallel to the wood fiber is very advantageous for maintaining the compression force.

Further, in the first embodiment of the friction damper, since the bolt 3 can move in the elongated hole 21 of the plate material 2, it is possible to cope with a large deformation, and in that case, the bolt 3 is guided by the elongated hole 21. Therefore, it is possible to prevent the face member 4 and the pillar member 5 from moving relative to each other in a direction other than the predetermined direction. Further, since the plate material 2 is sandwiched and tightened by both holding portions 12 of the friction material 1, it is easy to adjust the pressing force by the bolt 3. Further, although the case where one member is the face member 4 and the other member is the framework 5 (pillar member 5) is taken as an example here, the shape and structure of the one member and the other member may be any. .. Further, since the frictional force generated between the friction material 1 and the plate material 2 is used, it can be applied regardless of the material and surface condition of one member and the other member. The first embodiment of this friction damper can also be retrofitted to a building.

Next, a second embodiment of the friction damper will be described. As shown in FIGS. 7 and 8, the second embodiment of the friction damper includes a friction material 1, a plate material 2, and a fastener 3. What is different from the first embodiment is the configuration of the orthogonal portion 15 of the friction material 1, and in the second embodiment, the orthogonal portion 15 is a plate-shaped member located on both sides of the fastener 3.
The friction material 1 is made of wood, has a rectangular cross section, and extends in the longitudinal direction of the pillar material 5. As shown in the schematic view of FIG. 6, the friction material 1 is tightened in a direction parallel to the direction in which the frictional force acts, in other words, tightening. It has a fiber direction in a direction orthogonal to the compression direction by the tool 3. The friction material 1 includes an orthogonal portion 15. The orthogonal portion 15 has a fiber direction in a direction orthogonal to the extending direction of the groove portion 11 (direction in which the frictional force acts), in other words, in a direction parallel to the direction of the pressing force by the fastener 3. The friction material 1 on both sides of the fastener 3 is cut out in the longitudinal direction of the pillar material 5 in accordance with the position of the elongated hole 21 of the plate material 2, and the orthogonal portion 15 is fitted and adhered to the notch portion. ing. Bolt holes are provided between the two orthogonal portions 15 and 15 in the front and back directions. Then, a groove portion 11 extending in the longitudinal direction of the pillar material 5 is formed on the surface of the friction material 1 on the pillar material 5 side. The groove portion 11 extends over two orthogonal portions 15 and 15, and both sides (front side and back side) of the groove portion 11 are holding portions 12. Both the front side and the back side holding portions 12 are provided with orthogonal portions 15 which are divided into a front side and a back side by a groove portion 11. A fastener 3 composed of two bolts 3 is inserted through the bolt holes of both holding portions 12, the bolt holes of the receiving plate 6, and the elongated holes 21 of the plate material 2, and is inserted into the tip of the bolt 3 with a washer. 33 is inserted, and the nut 34 is further screwed in and tightened. The washer 33 is a circular steel plate having a size larger than the width between the two orthogonal portions 15, 15, and the edge of the washer 33 is in contact with the front side surface of the two orthogonal portions 15, 15. By tightening the bolt 3, a pressing force is generated in the front and back directions, both holding portions 12 are urged in a direction approaching each other, and both holding portions 12 press the plate material 2 from both sides. As shown in FIGS. 7 and 8, the friction material 1 may have the reinforcing member 10a integrally on the side surface on one side of the member, and further straddles the friction material 1 and the reinforcing member 10a on the front surface surface. Other reinforcing members may be applied as such. Further, the orthogonal portion 15 on the reinforcing member 10a side may be provided by hollowing out the friction material 1 so as not to have the reinforcing member 10a.

In the second embodiment of the friction damper configured as described above, when the face material 4 and the pillar material 5 move relative to each other due to vibration, a frictional force is generated between the wooden friction material 1 and the steel plate material 2. Therefore, the vibration can be damped. Since both sandwiching portions 12 of the friction material 1 are provided with orthogonal portions 15 and the direction in which the pressing force by the fastener 3 acts is parallel to the fiber direction of the orthogonal portions 15, the harsh conditions are the same as in the first embodiment. It is possible to maintain a high residual stress rate even in the above. At the same time, since the direction in which the frictional force generated perpendicular to the pressing force of the fastener 3 acts is parallel to the fiber direction of the friction material 1, the shear stress generated in the orthogonal portion 15 is reduced, and shear failure can be prevented. ..

Next, the first embodiment and the second embodiment of the friction damper were subjected to a shear test by repeated vibration. The results of the first embodiment are shown in FIG. 9, and the results of the second embodiment are shown in FIG. According to this, in any of the embodiments, a stable rectangular loop having high rigidity peculiar to the friction damper and almost no secondary rigidity was obtained.

Further, the results of performing a reliability test for maintaining the compression force with respect to the first embodiment and the second embodiment of the friction damper are shown. FIG. 11 shows the results of measuring the stress residual ratio of the friction damper in a dry-wet cycle in which an environment of room temperature of 20 ° C. and humidity of 40% is repeated and an environment of room temperature of 20 ° C. and humidity of 80% are repeated. In FIG. 12, the friction damper was placed in an extremely high temperature and high humidity state of room temperature of 40 ° C. and humidity of 87% for 4 days, and then placed in an environment of room temperature of 20 ° C. and humidity of 65% for 4 days, and then the stress residual ratio was measured. The result. From these results, it was confirmed that the stress residual ratio was relatively stable in each of the embodiments, and the compression force did not decrease significantly.

Next, a wall surface body provided with this friction damper will be described. FIG. 13A shows a wall surface body provided with the first embodiment of the friction damper, which includes a face material 4, a framework, and a friction damper 100. The face material 4 is a wooden rectangular plate material, and the framework is formed by forming the left and right pillar members 5 and 5 and the upper and lower beam members 8 and 8 in a four-circumferential framework, and is formed on the inner peripheral side of the framework. The face material 4 is attached to. The gap between the face material 4 and the left and right pillar materials 5 is narrow (for example, about 0.5 mm), and the gap between the face material and the upper and lower beam materials 8 is wide (for example, 25 mm). degree). The vibration is assumed to be an earthquake motion, and when this wall surface is vibrated in the horizontal direction, the framework is deformed into a parallel quadrilateral, and each side of the face material 4 and the framework ( The pillar 5 and the beam 8) move relatively in the direction along each side (longitudinal direction of the pillar 5 and the beam 8). At this time, since the gap between the face material 4 and the left and right pillar materials 5 is narrow, when the face material 4 tries to rotate, it comes into contact with the pillar material 5 to exert a streak effect, and the length of the friction damper 100 (the length of the friction damper 100). Deformation in the direction orthogonal to the hole 21) is restricted. On the other hand, since the gap between the face material 4 and the upper and lower beam materials 8 is wide, deformation in the vertical direction (direction in which the elongated hole 21 of the friction damper 100 extends) is allowed. In order to attenuate this vibration, three friction dampers 100 are attached at equal intervals between the left side and the left side pillar 5 of the face material 4 and between the right side and the right side pillar 5 of the face material 4. be. As shown in FIG. 13B, the method of attaching the friction damper 100 is the same as that shown in FIG. 3, in which the face member 4 corresponds to one member and the pillar member 5 corresponds to the other member. The receiving material 7 is a single member (two left and right) extending vertically. In this wall surface, as shown in FIG. 13A, the damping effect of the friction damper 100 is enhanced by minimizing the number of nails for fixing the face material 4 to the receiving material 7.

The wall surface to which the friction damper 100 is attached has high rigidity and high damping performance. When the first embodiment of the friction damper is applied, the plate material 2 provided integrally with the pillar material 5 is sandwiched between both holding portions 12 of the friction material 1 provided integrally with the face material 4, and the bolt 3 is vibrated. The face material 4 does not come off in the out-of-plane direction even if it loosens. Further, since both the holding portions 12 of the friction material 1 are provided with the orthogonal portions 13 and the direction in which the pressing force by the fastener 3 acts is parallel to the fiber direction of the orthogonal portions 13, a high stress residual ratio is maintained for a long period of time. can. Further, at the factory, the face material 4 and the friction material 1 can be manufactured as a set as a vibration damping surface material, and this can be inserted into the framework at the site.

Subsequently, a wall shear test was performed on the wall surface body provided with the first embodiment of the friction damper 100 shown in FIG. The test method is a column base fixed type, and 1/30 rad. After repeatedly applying force up to 1/15 rad. The monotonous force is applied up to, and the apparent shear deformation angle-load relationship is shown in the graph of FIG. According to this, high rigidity was shown reflecting the property of the friction damper 100. Therefore, the wall surface of the present invention has high rigidity and high damping performance, and also has 1/30 rad. Even in the case of large deformation exceeding the above, it exhibits extremely excellent performance such as no hardening or deterioration of proof stress.

Next, a third embodiment of the friction damper will be described. As shown in FIGS. 15 and 16, the third embodiment of the friction damper includes two friction materials 1a and 1b and a fastener 3a.
The friction materials 1a and 1b are made of wood, have a rectangular cross section and extend in the longitudinal direction of the pillar material 5, and are tightened in a direction parallel to the direction in which the frictional force acts as in other embodiments, in other words, tightening. It has a fiber direction in a direction orthogonal to the compression direction by the tool 3a. Then, the friction materials 1a and 1b are fixed by screwing the face material 4 to the surface of the pillar material 5 on the face material 4 side so as to sandwich the face material 4 from both the front and back sides. Further, the friction materials 1a and 1b are provided with three insertion holes 14a penetrating the front and back at equal intervals according to the positions of the elongated holes 41 of the face material 4, and each of the insertion holes 14a is provided with an orthogonal portion 13a. Is inserted and glued. The orthogonal portion 13a in the third embodiment is a rod-shaped member extending in the direction in which the pressing force by the fastener 3a acts, similarly to the orthogonal portion 13 in the first embodiment. The orthogonal portion 13a has a fiber direction in a direction parallel to the direction of the pressing force by the fastener 3a, and a bolt hole is provided in the center in the front and back directions.
The face material 4 is formed with a long hole 41 extending in the longitudinal direction of the pillar material 5, but the long hole 41 is hidden by both friction materials 1a and 1b. Then, after inserting the washer 33 into the fastener composed of the three bolts 3a, the washer 33 is inserted through the bolt hole of the orthogonal portion 13a and the elongated hole 41 of the face material 4 and screwed from the front side. The tip of the bolt 3a is fixed from the back side surface by a washer 33 and a nut 34. By tightening the bolt 3a, a pressing force is generated in the front and back directions, the friction materials 1a and 1b are urged in a direction approaching each other, and the friction materials 1a and 1b press the face material 4 from both sides.

Next, a fourth embodiment of the friction damper will be described. As shown in FIGS. 17 and 18, the fourth embodiment of the friction damper includes two friction materials 1a and 1b and a fastener 3b. What is different from the third embodiment is the configuration of the orthogonal portion 15a, and in the fourth embodiment, the orthogonal portion 15a is a plate-shaped member located on both sides of the fastener 3b, as in the second embodiment. ..
The friction materials 1a and 1b are made of wood, have a rectangular cross section and extend in the longitudinal direction of the pillar material 5, and are tightened in a direction parallel to the direction in which the frictional force acts as in other embodiments, in other words, tightening. It has a fiber direction in a direction orthogonal to the compression direction by the tool 3b. The friction materials 1a and 1b include an orthogonal portion 15a. The orthogonal portion 15a has a fiber direction in a direction parallel to the direction of the pressing force by the fastener 3b. Friction materials 1a and 1b on both sides of the fastener 3b are notched in the longitudinal direction of the pillar 5 in accordance with the position of the elongated hole 41 of the face material 4, and the orthogonal portion 15a is fitted into the notch. Is glued.
Further, the face material 4 is formed with an elongated hole 41 extending in the longitudinal direction of the pillar material 5, as in the third embodiment. Then, a fastener composed of two bolts 3b is screwed from the front side through both friction materials 1a and 1b between the two orthogonal portions 15a and 15a and the elongated hole 41 of the face material 4. The tip of the bolt 3a is fixed from the back side surface by a washer 33 and a nut 34. When the bolt 3b is tightened, a pressing force is generated in the front and back directions, the friction materials 1a and 1b are urged in a direction approaching each other, and the friction materials 1a and 1b press the face material 4 from both sides.

In the third and fourth embodiments of the friction damper configured in this way, when the face material 4 and the pillar material 5 move relative to each other due to vibration, the wooden friction materials 1a and 1b and the wooden face material 4 The vibration can be damped by the frictional force generated between the two. Further, since the bolt 3a can move in the elongated hole 41 of the face material 4, it can cope with a large deformation. Since both friction materials 1a and 1b are provided with orthogonal portions 13a and 15a, and the direction in which the pressing force is applied by the fasteners 3a and 3b and the fiber direction of the orthogonal portions 13a and 15a are parallel, the conditions are harsh. Can maintain a high residual stress rate. At the same time, since the direction in which the frictional force generated perpendicular to the pressing force of the fasteners 3a and 3b acts is parallel to the fiber direction of both friction materials 1a and 1b, the shear stress generated in the orthogonal portions 13a and 15a is reduced. , Can prevent shear failure.

Subsequently, the results of a shear test performed by repeated vibration on the friction damper configured in this way are shown. Here, the fourth embodiment was tested, and the displacement-load relationship is shown in the graph of FIG. According to this, the high rigidity peculiar to the friction damper and the rectangular stable loop with almost no secondary rigidity were obtained.

FIG. 20 shows a wall surface body provided with the fourth embodiment of the friction damper. It has the same configuration as the wall surface body provided with the first embodiment of the friction damper shown in FIG. 13, and includes a face material 4, a framework (column material 5 and beam material 8), and a friction damper 100. Three friction dampers 100 are attached at equal intervals between the left side and the left side pillar 5 of the face material 4 and between the right side and the right side pillar 5 of the face material 4. The method of attaching the friction damper 100 is the same as that shown in FIG. 13, in which the face member 4 corresponds to one member and the framework (pillar member 5) corresponds to the other member. However, the friction materials 1a and 1b are members extending from the upper end to the lower end of the face material 4, and the friction materials 1a and 1b are similarly provided on the upper and lower sides of the face material 4.

The wall surface to which the friction damper 100 is attached has high rigidity and high damping performance. When the fourth embodiment of the friction damper is applied, the face material 4 is sandwiched between the two friction materials 1a and 1b provided integrally with the pillar material 5, so that the face material 4 is a surface even if the bolt 3a is loosened by vibration. It does not come off in the outward direction. Further, both the holding portions 12 of the friction materials 1a and 1b are provided with the orthogonal portions 15a, and the direction in which the pressing force by the fastener 3 acts is parallel to the fiber direction of the orthogonal portions 15a, so that the stress residual ratio is high in the long term. Can be maintained. Further, at the factory, the face material 4 and the friction materials 1a and 1b can be manufactured as a set as a vibration damping surface material, and this can be inserted into the framework at the site.

In the third embodiment and the fourth embodiment of the friction damper, the face material 4 provided with the elongated hole 41 is used, but by applying the face material 4 of various embodiments, the stress relaxation behavior by the face material 4 is suppressed. Can be done. For example, as shown in FIG. 21, the face material 4 may be provided with a reinforcing member 91 made of steel plate at a position where the face material 4 is pressed by the fasteners 3a and 3b. In this case, a part of the face material 4 is hollowed out and the reinforcing member 91 is fitted and adhered, and the fasteners 3a and 3b are inserted into the elongated holes 91a provided in the reinforcing member 91. Further, as shown in FIGS. 22 and 23, even if the face material 4 is provided with reinforcing members 92, 93 made of plywood bonded by orthogonal lamination at a position to be pressed by the fasteners 3a, 3b. good. In this case, the reinforcing members 92 and 93 are provided on the face material 4 so that the side surface of the plywood is on the surface side of the face material 4, in other words, the surface direction and the pressing direction by the fasteners 3a and 3b are parallel to each other. It is fitted. The reinforcing members 92 and 93 are provided with elongated holes 92a and 93a, and the fasteners 3a and 3b are inserted into the elongated holes 92a and 93a. The face material 4 in FIG. 22 has a U-shaped notch at a portion to be pressed by the fasteners 3a and 3b, and the reinforcing member 92 is fitted and adhered to the notch. The face material 4 in FIG. 23 is formed by hollowing out a portion to be pressed by the fasteners 3a and 3b and fitting a reinforcing member 93 into the face material 4 to be bonded. Further, as in the face material 4 shown in FIG. 24, a reinforcing member 94 having an orthogonal portion 94b may be provided. The orthogonal portion 94b is a rod-shaped member having a fiber direction in a direction parallel to the pressing force. The reinforcing member 94 is provided with a plurality of through holes in the front and back directions at intervals where the fasteners 3a and 3b are pressed, and the orthogonal portions 94b are fitted into the through holes, and the plurality of orthogonal portions are further orthogonal to each other. An elongated hole 94a is provided along the portion 94b. Further, an L-shaped notch is provided on the back side surface of the reinforcing member 94, and the face material 4 is adhered to the notch portion so that the back side surface of the face material 4 and the back side surface of the reinforcing member 94 are flush with each other. There is. Then, as in the face material 4 shown in FIG. 25, a reinforcing member 95 having an orthogonal portion 95b may be provided. The orthogonal portion 95b is a plate-shaped member having a fiber direction in a direction parallel to the pressing force. The reinforcing member 95 is provided with an elongated hole 95a at a position where it is pressed by the fasteners 3a and 3b, and is provided with orthogonal portions 95b and 95b on both sides of the elongated hole 95a. One of the two orthogonal portions 95b is provided with a groove extending in the longitudinal direction of the pillar member 5, and the face member 4 is inserted and adhered to the groove.
Since the face material 4 provided with such reinforcing materials 91 to 95 includes a member along the outer periphery of the elongated holes 91a to 95a in which relaxation is unlikely to occur, the stress relaxation behavior of the face material 4 can be suppressed.

The friction damper of the present invention may have a different configuration. 26 and 27 show a fifth embodiment of the friction damper. In each of the first to fourth embodiments, one member is a wooden face member 4 and the other member is a wooden pillar member 5, but in the fifth embodiment, either the one member 4a or the other member 5a is used. Is also a wooden face material, and more specifically, it is a thick laminated panel in which a plurality of plate materials are laminated and bonded at right angles to each other, and one member 4a and the other member 5a have the same plate thickness. The two face materials 4a and 5a are joined so that their end faces are butted against each other, and a case where the face materials 4a and 5a move relative to each other in the longitudinal direction of the joint surface is mentioned.
The fifth embodiment includes a plate material 2, a fastener 3c, and a fixture 30.
The one member (face material) 4a is provided with three insertion holes 43 penetrating the front and back at equal intervals according to the position closer to the other member (face material) 5a, in other words, the position of the elongated hole 21 of the plate material 2. be. An orthogonal portion 44 is inserted and adhered to each of the insertion holes 43. In the fifth embodiment, the orthogonal portion 44 is a rod-shaped member extending in the direction in which the pressing force by the fastener 3c acts, but the clamping tool is like the orthogonal portions 15, 15a of the second embodiment and the fourth embodiment. It may be a plate-shaped member located on both sides of 3c. On the end surface of the one member 4a facing the other member 5a, a groove portion 41 is formed in the longitudinal direction thereof, and both sides (front side and back side) of the groove portion 41 are holding portions 42. Both the front side and the back side holding portions 42 include an orthogonal portion 44 divided by the groove portion 41. The orthogonal portion 44 has a fiber direction in a direction orthogonal to the extending direction of the groove portion 41 (direction in which the frictional force acts), in other words, in a direction parallel to the direction of the pressing force by the fastener 3c, and is located at the center of the orthogonal portion 44. Has bolt holes in the front and back directions.
The other member 5a is provided with three fixing holes 53 penetrating the front and back at equal intervals at a position closer to the one member 4a, in other words, at a position of a fixing hole 23 of the plate material 2. A groove 51 is formed on the end surface of the other member 5a facing the one member 4a in the longitudinal direction thereof, and both sides (front side and back side) of the groove portion 51 are holding portions 52. Both the front side and the back side holding portions 52 have a fixing hole 53 divided by the groove portion 51.
One member 4a and the other member 5a have their end faces facing each other with the grooves 41 and 51 facing each other, and the plate material 2 is placed on the grooves 41 and 51 so as to straddle the groove 41 of the one member 4a and the groove 51 of the other member 5a. It has been inserted.
The plate member 2 is sandwiched between the holding portions 42 and 52 of the one member 4a and the other member 5a, and is hidden by the one member 4a and the other member 5a. The plate material 2 is made of steel, and an elongated hole 21 extending in the longitudinal direction of the joint surface of the one member 4a and the other member 5a is formed on the one side of the member 4a, and the other member 5a is fixed on the other member 5a side. A fixing hole 23 is formed in accordance with the hole 53.
A fastener 3c composed of three bolts is inserted through the bolt hole of the orthogonal portion 44 of the one member 4a and the elongated hole 21 of the plate material 2, and the washer 33 is inserted into the tip of the bolt 3. Further, the nut 34 is screwed in and tightened. Further, a fixing tool 30 such as a drift pin is fixed through the fixing hole 53 of the other member 5a and the fixing hole 23 of the plate material 2. By tightening the bolt 3, a pressing force is generated in the front and back directions, while both holding portions 42 of the member 4a are urged in a direction approaching each other, and both holding portions 42 press the plate material 2 from both sides.
The fifth embodiment of the friction damper configured in this way also showed high rigidity as shown in FIG. 28.

FIG. 29 shows a wall surface body provided with the fifth embodiment of the friction damper, which includes face materials 4a and 5a, a framework, and a friction damper 100. In the face materials 4a and 5a, the other member 5a is joined to both sides of the one member 4a. The framework is formed by forming the left and right column members 8a and 8a and the upper and lower beam members 8b and 8b in a four-circumferential framework, and the face members 4a and 5a are attached to the inner peripheral side of the framework. Specifically, the end portions of the face materials 4a and 5a are sandwiched by the receiving material 7 attached to the framework. There is a gap between the face materials 4a and 5a and the left and right pillar materials 8a, for example, 7.5 mm or more, preferably about 20 mm. Four friction dampers 100 are attached to the joints between the one member 4a and the other member 5a at equal intervals.
Next, when a wall shear test was performed on the wall surface body provided with the fifth embodiment of the friction damper 100, it was found to have excellent damping performance as shown in the graph of FIG. 30 showing the apparent shear deformation angle-load relationship. confirmed.

In addition, in order to further stabilize the pressing force of the friction damper of the present invention, the accelerated treatment and the re-tightening are effective. Hereinafter, the test results using the first embodiment of the friction damper will be specifically described. The accelerated treatment is a treatment of long-term exposure to a high-temperature and high-humidity environment. Wood undergoes stress relaxation due to expansion and contraction when it receives changes in temperature and humidity. It was also confirmed that the compression force of the friction damper was significantly reduced when the acceleration treatment was applied. Therefore, it is effective to apply a accelerating treatment to the friction damper for a long time in advance to stabilize the compression force. Further, by re-tightening the fastener of the friction damper, high stress can be maintained even after stress relaxation.
FIG. 31 shows the results of performing a reliability test for maintaining the compression force using the first embodiment of the friction damper. In this test, all the accelerated treatments were left in an environment of room temperature of 40 ° C. and humidity of 87% for 96 hours. When the acceleration treatment was applied after the start of the test, the stress decreased sharply. Then, a few days after the first promotion treatment, re-tightening was performed. The stress of the friction damper without re-tightening gradually decreased after the acceleration treatment, but when re-tightening, the stress recovered immediately after re-tightening, and then the second promotion. No significant decrease was observed during the treatment, and high stress was maintained.
FIG. 32 shows the reliability of maintaining the pressing force as compared with the first embodiment of the friction damper, which is repeatedly subjected to the accelerated treatment and the re-tightening, and the conventional friction damper which is pressed in the direction orthogonal to the wood fiber. This is the result of conducting the test. In this test, all the accelerated treatments were left in an environment of room temperature of 40 ° C. and humidity of 87% for 96 hours. The graphs A and B show the results of the first embodiment of the friction damper, and the graphs C and D show the results of the conventional product. Further, in A and C, the first accelerating treatment is performed immediately after the start of the test, a few days later, the retightening treatment is performed, the second accelerating treatment is performed, and then the retightening and accelerating treatment are performed. On the other hand, B and D are the same as the conditions of A and C except that the promotion treatment is not performed immediately after the start of the test (first time). Comparing the first embodiment (A, B) and the conventional product (C, D), the compression force is maintained higher in the first embodiment under any condition. In addition, when the accelerated treatment was performed before the retightening (A, C), the stress residual rate was about 7% higher than that when the accelerated treatment was not performed (B, D). From this, it was confirmed that it is effective to maintain the compression force by performing the accelerated treatment before re-tightening.

As a further embodiment of the friction damper of the present invention, there is a sixth embodiment shown in FIGS. 33 and 34. The sixth embodiment is similar to the first embodiment, but in the sixth embodiment, the modified L-shaped member 24 having the refracting portion 24a is used, and the groove portion 11 of the friction material 1 is on the expected surface facing the pillar material 5. It is provided on the found surface on the front side. Further, in the sixth embodiment, since the fastener 3 is inserted in the finding direction, the direction in which the pressing force acts is 90 ° different from that in the first embodiment.
The friction material 1 is firmly attached to the face material 4 by using nails, screws, and an adhesive along the portion facing the pillar material 5. Further, the friction material 1 is provided with three insertion holes 14 penetrating in the finding direction at equal intervals, and an orthogonal portion 13 is inserted and adhered to each of the insertion holes 14. A bolt hole is provided in the center of the orthogonal portion 13 in the finding direction. A groove portion 11 extending in the prospective direction of the pillar member 5 is formed on the front surface surface of the friction material 1, and both sides of the groove portion 11 are holding portions 12. Both sandwiching portions 12 include orthogonal portions 13 separated by groove portions 11. Further, a plate material 2a is inserted into the groove portion 11.
The plate material 2a is integrated with the modified L-shaped material 24. The modified L-shaped member 24 is made of steel, has a refracting portion 24a further formed on the L-shaped member, and is provided with a plate material 2a extending from the refracting portion 24a. In the modified L-shaped member 24, one side 24b of the L-shape is fixed to the surface of the pillar member 5 on the face member 4 side by screwing. A refracting portion 24a is formed at the end of the other side 24c extending in parallel with the face material 4 from the pillar material 5, and the plate material 2a extending from the refracting portion 24a toward the face material 4 in the prospective direction is the friction material 1. It is inserted into the groove portion 11. The plate member 2a is formed with an elongated hole 21 extending in the longitudinal direction of the pillar member 5. Then, the fastener 3 composed of the three bolts 3 is inserted in the finding direction through the bolt hole of the orthogonal portion 13 and the elongated hole 21 of the plate material 2a, and is inserted in the finding direction by tightening the bolt 3. A pressing force is generated, and both holding portions 12 are urged in a direction approaching each other, and both holding portions 12 press the plate material 2a from both sides.

FIG. 35 shows a wall surface body provided with the sixth embodiment of the friction damper, which includes a face material 4, a framework, and a friction damper 100. The face material 4 is a wooden rectangular plate material, and the framework is formed by forming the left and right pillar members 5 and 5 and the upper and lower beam members 8 and 8 in a four-circumferential framework, and is formed on the inner peripheral side of the framework. The face material 4 is attached to. In order to attenuate the vibration, three friction dampers 100 are attached at equal intervals between the left side and the left side pillar 5 of the face material 4 and between the right side and the right side pillar 5 of the face material 4. be. The method of attaching the friction damper 100 is the same as that of the first embodiment, but in the sixth embodiment, since the fastener 3 is inserted in the finding direction, the direction in which the pressing force acts is the first embodiment. Is 90 ° different.

In the sixth embodiment of the friction damper configured as described above, when the face material 4 and the pillar material 5 move relative to each other due to vibration, a frictional force is generated between the wooden friction material 1 and the steel plate material 2a. As a result, the vibration can be damped, the same effect as that of the first embodiment can be obtained, and the construction of the heat insulating material becomes easy. Further, the wall surface body to which the friction damper of the sixth embodiment is applied has high rigidity and high damping performance.

In each of the first to fifth embodiments, the friction damper has a wall surface specification in which the pillar is exposed, but the friction damper of the present invention can also be applied to a large wall specification in which the pillar is hidden by the wall. 36 and 37 show a seventh embodiment of a friction damper having a large wall specification using the modified L-shaped member 24 and a wall surface body provided with the friction damper.
This seventh embodiment includes a friction material 1, a plate material 2a, and a fastener 3, and uses a modified L-shaped material 24 as in the sixth embodiment. The friction material 1 is made of wood, has a rectangular cross section, extends in the longitudinal direction of the pillar material 5, and is fixed to the front surface of the face material 4 by screwing from the back side. A groove portion 11 extending in the longitudinal direction of the pillar member 5 is formed on the front surface surface of the friction material 1, and both sides of the groove portion 11 are holding portions 12. The deformed L-shaped member 24 made of steel and extending in the longitudinal direction of the column member 5 has one side 24b fixed to the column member 5 by screwing. Further, the deformed L-shaped member 24 has a refracting portion 24a formed at the end of the other side 24c extending in parallel with the face material 4 from the pillar material 5, and is a plate material extending from the bending portion 24a toward the face material 4 in the prospective direction. 2a is formed. The plate material 2a is inserted into the groove portion 11 of the friction material 1 and is sandwiched between both holding portions 12. Further, the plate member 2a is formed with an elongated hole 21 extending in the longitudinal direction of the pillar member 5. An insertion hole 14 penetrating in the finding direction is formed in both holding portions 12 of the friction material 1 in accordance with the position of the elongated hole 21 of the plate material 2a, and the orthogonal portion 13 is formed in each of the insertion holes 14. It is inserted and glued. A bolt hole is provided in the center of the orthogonal portion 13 in the finding direction. The fastener made of the bolt 3 is inserted in the finding direction through the bolt hole of both holding portions 12 and the elongated hole 21 of the plate material 2a, and the tightening force is applied in the finding direction by tightening the bolt 3. It is generated, and both sandwiching portions 12 are urged in a direction approaching each other, and both sandwiching portions 12 press the plate material 2a from both sides. The front surface of the face material 4 is brought into contact with the back surface of the pillar material 5, and the outer peripheral portion is nailed from the back side to fix it. The seventh embodiment of the friction damper configured as described above also has high rigidity, and the wall surface body provided with the friction damper 100 has high rigidity and high damping performance. As described above, the friction damper of the present invention can be applied to both a wall surface of a true wall type and a wall surface of a large wall type.

The present invention is not limited to the above embodiment, and can be appropriately modified without departing from the spirit of the present invention. For example, the shape of the orthogonal member may be any shape such as a rectangle or a circle. Further, in the first embodiment and the second embodiment, the T-shaped material may be used instead of the L-shaped material, and in the sixth embodiment and the seventh embodiment, other shapes are used instead of the modified L-shaped material. The plate material may be constructed by using one. The shape of each other member may be any shape as long as it satisfies the above requirements, and each member may be joined by using an adhesive or the like in addition to screws and nails. May be good. Further, the number of insertion holes and fasteners (bolts) provided in the friction material and the number of friction dampers attached to the wall surface can be changed as needed, and is not particularly limited.

1,1a, 1b Friction material 2 Plate material 3,3a, 3b, 3c Tightening tool (bolt)
4,4a One side member (face material)
5 The other member (pillar material)
5a The other member (face material)
11, 41, 51 Grooves 12, 42, 52 Holding parts 13, 13a, 15, 15a, 94b, 95b, 44 Orthogonal parts 21, 41, 91a to 95a Long holes 100 Friction dampers

Claims (3)

It extends in a predetermined direction, faces each other, and moves relative to each other in a predetermined direction due to vibration. It is interposed between one member and the other member to attenuate the vibration.
Equipped with friction material, plate material, and fasteners,
The friction material is made of wood and is provided integrally with one member along the portion facing the other member to form a groove portion extending in a predetermined direction, and both sides of the groove portion are sandwiching portions. The part is equipped with a wooden orthogonal part,
The plate material is made of metal and is provided integrally with the other member along the portion facing the one member to form an elongated hole extending in a predetermined direction, and is inserted into the groove portion of the friction material to be inserted into both holding portions. It is sandwiched and
A fastener is provided along the facing portion between the one member and the other member, penetrates both the holding portions of the friction material and the elongated hole of the plate material, and tightens both holding portions in a direction of approaching each other. Both holding parts press the plate material from both sides,
The direction in which the pressing force applied by the fastener works is parallel to the fiber direction at the orthogonal portion.
A friction damper characterized in that the direction in which the frictional force generated perpendicular to the pressing force of the fastener acts is parallel to the fiber direction in a portion other than the orthogonal portion of the friction material. It extends in a predetermined direction, faces each other, and moves relative to each other in a predetermined direction by vibration. It is interposed between one wooden member and the other member to attenuate the vibration.
It has two friction materials, a fastener, and an elongated hole formed in one member that extends in a predetermined direction.
Both friction materials are made of wood, have orthogonal parts, are provided integrally with the other member along the portion facing the one member, and sandwich the one member.
A fastener is provided along the facing portion of one member and the other member, penetrates the long hole of both friction materials and one member, and tightens both friction materials in a direction to bring them closer to each other. The material presses one member from both sides,
The direction in which the pressing force applied by the fastener works is parallel to the fiber direction at the orthogonal portion.
A friction damper characterized in that the direction in which the frictional force generated perpendicular to the pressing force of the fastener acts is parallel to the fiber direction in a portion other than the orthogonal portion of the friction material. It extends in a predetermined direction, faces each other, and moves relative to each other in a predetermined direction due to vibration. It is interposed between one member and the other member to attenuate the vibration.
Equipped with plate material, fixture, and fastener,
One member and the other member are made of wood, each of which forms a groove portion extending in a predetermined direction, and both sides of the groove portion are holding portions, and are arranged so that the openings of the groove portions face each other.
On the other hand, both sandwiching parts of the member are provided with wooden orthogonal parts,
On the other hand, both holding portions of the member are provided with fixing holes, and the holding portions are provided with fixing holes.
The plate material is made of metal and has a long hole extending in a predetermined direction and a fixing hole. The long hole is on one member side and the fixing hole is on the other member side. It is placed in and sandwiched between both holding parts,
A fixture is provided on the other member and is fixed by penetrating the fixing hole of the other member and the fixing hole of the plate material.
A fastener is provided on one member, penetrates the orthogonal portion of the one member and the elongated hole of the plate material, and tightens both sandwiching portions in a direction to bring them closer to each other, and both sandwiching portions press the plate material from both sides. death,
A friction damper characterized in that the direction in which the pressing force applied by the fastener acts is parallel to the fiber direction in the orthogonal portion.

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