JP2009002119A - Friction damper and friction damper unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a friction damper and a friction damper unit capable of uniformly press-fitting a sliding material. <P>SOLUTION: This friction damper 10 comprises plate materials 20-38, the sliding material 68 which is fixed to the plate materials 20-38, the other-side plates 44-60 which abut on the sliding material 68, and a pair of fastening plates 65 and 66 which are provided on the outermost portions of the plate materials 20-38. In this case, the sliding material 68 covers a prescribed range around a hole center of a through-hole 72; and a range, in which a frictional surface is equally and effectively pressed, can be identified by a combination of a prestressing steel bar 74, which passes through the through-hole 72, and the fastening plates 65 and 66. This enables the control of a frictional force and the durability of the sliding material 68. Additionally, the plurality of sliding materials and the plurality of the other-side plate materials are provided, and the frictional surface is formed in a multistepped shape. Thus, even if the shape of the friction damper 10 is reduced by reducing the area of the sliding material 68, the whole frictional area does not have to be reduced. This enables the downsizing of the shape of the friction damper 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a friction damper and a friction damper unit that reduce shaking of a building structure.

  In order to reduce the shaking of the building structure due to an earthquake or the like, a friction damper is provided between the beam or brace of the building structure or the hanging wall. The friction damper has a mechanism in which a sliding plate is provided on one of two members that are relatively displaced, and the vibration is attenuated by a frictional force generated on a contact surface between the sliding plate and the other member.

  Here, as a first example of the friction damper, a first pressure contact plate and a second pressure contact plate are respectively provided on two members that are relatively displaced by vibration, and a friction plate and a sliding plate are provided between the first pressure contact plate and the second pressure contact plate. There are some (see, for example, Patent Document 1).

  In the friction damper of Patent Document 1, a first pressure contact plate is provided on one of two members that are relatively displaced by vibration, and a pair of second pressure contact plates that sandwich the first pressure contact plate is provided on the other. A friction plate is provided on the surface side of the second pressure contact plate, and a sliding plate is provided between the friction plate and the first pressure contact plate.

  A long hole is formed in the first pressure contact plate, and a bolt that penetrates the second pressure contact plate passes through the long hole and imparts an axial force. Here, by making the friction coefficient between the second pressure contact plate and the friction plate larger than the friction coefficient between the first pressure contact plate and the sliding plate, it is not necessary to bond and fix the friction plate.

  However, since the friction damper of Patent Document 1 has only two friction surfaces to be formed, it is necessary to increase the size of the friction damper in order to increase the area of the friction surface.

  As a second example of the friction damper, there is one in which the pressure on the contact surface between one member and the other member that are relatively displaced can be adjusted by changing the tightening force (see, for example, Patent Document 2).

  In the friction damper of Patent Document 2, the other friction plate is inserted into the space between one of the plurality of stacked friction plates, and is in surface contact. These friction plates are surrounded by a square cylinder, and the friction plates are pressure-bonded by a wedge-shaped member inserted between the square cylinder and the friction plate.

However, since the friction damper of Patent Document 2 presses the friction plate with a wedge-shaped member that is tightened at the end, the entire friction plate cannot be pressed uniformly.
JP 2003-307253 A JP-A-2005-344761

  An object of this invention is to obtain the friction damper and friction damper unit which can crimp | bond a sliding material equally.

  A friction damper according to claim 1 of the present invention is formed at a predetermined interval in a longitudinal direction of a plurality of plate members which are stacked at intervals and are attached to one building structure, and a fastening member is inserted therethrough. A plate hole portion, a sliding material fixed to the plate material so as to cover a predetermined range centering on a hole core of the plate hole portion, and being inserted into the interval and contacting the sliding material, A plurality of mating plate members attached to another building structure that moves relative to the building structure, and an elongated hole that is formed in the mating plate material and is relatively movable with the fastening member inserted into the plate hole portion, A pair of clamping plates that are provided at both ends of the clamping member protruding from the outermost part of the laminated plate material and that crimp the plate material and the mating plate material with the clamping force of the clamping member; It is characterized by.

  According to the above configuration, the tightening member and the elongated hole can be moved relative to each other, and when the plate member and the counterpart plate member move relative to each other due to an earthquake or the like, between the pressed plate member and the counterpart plate member, that is, the sliding member and the counterpart member. A frictional force is generated on the friction surface between the plate materials, and this frictional force absorbs vibration energy such as an earthquake. Thereby, the vibration control of the building structure is performed.

  Here, the sliding material covers a predetermined range centering on the hole core of the plate hole portion, and the friction surface is pressed evenly and effectively by the combination of the tightening member and the tightening plate penetrating the plate hole portion. Therefore, the sliding material can be uniformly crimped, and the frictional force and the durability of the sliding material can be managed with high accuracy.

  Further, since there are a plurality of sliding materials and mating plate materials and the friction surfaces are multistage, even if the area of the sliding material is reduced and the shape of the friction damper is reduced, it is not necessary to reduce the entire friction area. For this reason, the shape of a friction damper can be made compact and the freedom degree of the installation to a building structure increases.

  In the friction damper according to claim 2 of the present invention, the fastening member is a PC steel rod that fastens the fastening plate together with a nut, and the sliding member in the axial direction of the PC steel rod covers a predetermined range. The projected positions of the fastening plates are the same.

  According to the above configuration, since the projected position of the clamping plate in the axial direction of the PC steel bar coincides with the position of the predetermined range covered by the sliding material, when tightened with the PC steel bar, the friction surface The distribution of the frictional force is not shifted and the frictional force can be made uniform.

  Further, the PC steel bar has a larger allowable tightening load than that of the high tension bolt and can reduce the diameter of the bar, so that the generation of additional stress on the friction surface can be suppressed and the frictional force is stabilized.

  The friction damper according to claim 3 of the present invention is characterized in that the sliding member is fixed to the plate member at a predetermined interval.

  According to the above configuration, since the sliding material is fixed to the plate material at a predetermined interval, it is easy to equalize the pressing force by the tightening member at each location of the plate material even if the friction area is increased, and the friction force is uniform. Can be done.

  In the friction damper according to a fourth aspect of the present invention, the predetermined range covered by the sliding material is a quadrangle having a side length of 100 mm or more and 145 mm or less or a side length centering on the hole core of the plate hole portion. Is a range in which a portion corresponding to the elongated hole is excluded from a circle inscribed in a quadrilateral of 100 mm to 145 mm, and the fastening plate is a square or round plate having a thickness of 22 mm to 30 mm It is characterized by that.

  According to the above configuration, in general, when the sliding material is pressed, the pressure spreads in a rough manner. However, by specifying the combination of the size of the sliding material and the thickness of the fastening plate within the above range, The pressure can be transmitted evenly and effectively over almost the entire surface of the sliding material.

  A friction damper unit according to claim 5 of the present invention is characterized in that the friction dampers according to claim 3 or claim 4 are arranged in parallel on the same surface.

  According to the above configuration, by arranging the friction dampers in parallel, the vibration damping force can be adjusted according to the assumed ground motion, so that the vibration damping force can be easily managed. Further, the friction damper can be developed both in the vertical direction and in the horizontal direction.

  Since the present invention has the above-described configuration, the frictional force of the friction damper can be managed, and the friction damper can be made compact.

  A friction damper and a friction damper unit according to a first embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1 a, a high-rise building 100 is constructed on the ground 108.

  In the building 100, a pile (not shown) made of concrete or the like is formed in the vertical direction of the ground 108, and a column part 102 composed of a plurality of columns and a plurality of beams 104 are assembled and fixed on the pile. Built.

  Further, a truss structure portion 106 is provided as a reinforcing portion against shaking or the like in a part of the building 10.

  As shown in FIG. 1 b, the truss structure portion 106 includes an upper chord material 110 extending in a substantially horizontal direction, a lower chord material 112 disposed below the upper chord material 110 in parallel with the upper chord material 110, and an upper chord material 110. One end is fixed to the approximate center of the lower chord material 112 and the other end is fixed to the approximate center of the lower chord material 112. And a pillar material 116.

  The upper chord member 110, the lower chord member 112, the diagonal member 114, and the column member 116 are fastened by bolts and nuts (not shown), respectively.

  One end of the upper chord member 110 is fastened to a connection plate 118 projecting outward from the side surface of the column portion 102 by bolts and nuts (not shown). One end of the lower chord member 112 is fastened to a connection plate 120 projecting outward from the side surface of the column portion 102 on the lower side of the connection plate 118 by bolts and nuts (not shown).

  Here, a part of the lower chord material 112 is provided with a friction damper 10 that generates a frictional force to control the building 100 (see FIG. 1a).

  As shown in FIGS. 2a and 2b, the friction damper 10 is mainly fixed to the plurality of plate members 20, 24, 28, 30, 34, 38 and the plate members 20, 24, 28, 30, 34, 38. A plurality of mating plates 44, 48, 52, 56, 60 inserted at a distance between the sliding member 68 and the plate members 20, 24, 28, 30, 34, 38, and the plate members 20, 24, 28, 30, 34, 38 And a pair of fastening plates 65 and 66 provided at the outermost part.

  The plate materials 20, 24, 28, 30, 34, and 38 are made of steel. Insert plates 22, 26, 32, and 36 made of steel are inserted in one end (left end) of the plate materials 20, 24, 28, 30, 34, and 38.

  In addition, one end (right end) of the connecting plate 12 made of a steel material and longer than the insertion plates 22, 26, 32, 36 is inserted between the plate members 28, 30.

  Here, the plate material 20, the insertion plate 22, the plate material 24, the insertion plate 26, the plate material 28, the connection plate 12, the plate material 30, the insertion plate 32, the plate material 34, the insertion plate 36, and the plate material 38 are separated from the upper surface of the plate material 20. Through-holes 41 and 43 penetrating to the lower surface of 38 are formed. Bolts 40 are inserted into the through holes 41 and 43 and fastened with nuts 42, whereby one end of the plate materials 20, 24, 28, 30, 34, and 38 is fixed to the connecting plate 12. As a result, the plate members 20, 24, 28, 30, 34, and 38 can move together.

  The other end (left end) of the connecting plate 12 is sandwiched between a pair of presser plates 119 and 121 made of a steel plate together with the tip of the connecting plate 120 (see FIG. 1).

  The presser plate 119, the connecting plate 120, the connecting plate 12, and the presser plate 121 are formed with through holes 15 and 16 penetrating from the upper surface of the presser plate 119 to the lower surface of the presser plate 121. The bolts 14 are inserted into the through holes 15 and 16 and fastened with nuts 18, whereby the other end of the coupling plate 12 is fixed to the connection plate 120.

  As shown in FIGS. 2 b and 4, a plurality of plate-like sliding materials 68 made of a fluorine resin such as Teflon (registered trademark) or a phenol resin are provided on the surfaces of the plate materials 20, 24, 28, 30, 34, 38. Are attached with an adhesive at a predetermined interval.

  A pair of fastening plates 65, 66 made of steel plates are provided at a plurality of locations on the outermost part of the stacked plate members 20, 24, 28, 30, 34, 38, or are fixed by fastening with screws. Yes.

  Here, as shown in FIGS. 3 a and 3 b, the fastening plates 65 and 66, the sliding material 68, and the plate materials 20, 24, 28, 30, 34, and 38 are tightened from the upper surface of the fastening plate 65. A through hole 72 penetrating to the lower surface of the plate 66 is formed.

  A plurality of through holes 72 are formed at predetermined intervals in the longitudinal direction of the plate members 20, 24, 28, 30, 34, 38. Further, the inner diameter of the through hole 72 is large enough to allow the PC steel rod 74 to be inserted.

  The above-mentioned sliding material 68 is fixed to the plate materials 20, 24, 28, 30, 34, 38 in advance so that the centroid coincides with the hole core of the through hole 72.

  On the other hand, as shown in FIG. 2 b and FIG. 4, the interval at the other end (right end) of the plate members 20, 24, 28, 30, 34, 38 is a plurality of counterpart plates 44, 48, 52, 56, made of steel plates. 60 is inserted in the direction of the arrow -X and is in contact with the sliding material 68. The mating plate 52 is longer than the mating plates 44, 48, 56, 60.

  As shown in FIGS. 3 a and 3 c, elongated holes 70 are formed in a plurality of locations at predetermined intervals in the mating plates 44, 48, 52, 56, 60. Note that, at the initial position of the friction damper 10 (see FIG. 1) (the position in which no vibration is generated), the center position of the through hole 72 and the center position of the elongated hole 70 coincide.

  In FIG. 3a, the sliding member 68 and the counterpart plates 44, 48, 52, 56, and 60 are separated from each other, but are separated from each other in order to clarify the multilayer structure. The material 68 and the mating plates 44, 48, 52, 56, 60 are crimped.

  Here, as shown in FIG. 2 b, the PC steel rod 74 is inserted into the through hole 72 and the long hole 70 and fastened with a nut 76, so that the fastening plates 65, 66 become the plate members 20, 24, 28, 30, 34, 38 and the mating plates 44, 48, 52, 56, 60 are crimped. In addition, the PC steel rod 74 and the long hole 70 can be relatively moved inside the long hole 70.

  In addition, in the state fastened with the PC steel rod 74 and the nut 76, the projected positions of the sliding material 68 and the fastening plates 65, 66 in the axial direction of the PC steel rod 74 are the same.

  On the other hand, insertion plates 46, 50, 54, and 58 made of steel are inserted into one end (right end) of the mating plates 44, 48, 52, 56, and 60.

  Here, the mating plate 44, the insertion plate 46, the mating plate 48, the mating plate 50, the mating plate 52, the mating plate 54, the mating plate 56, the inserting plate 58, and the mating plate 60 are connected to the mating plate from the upper surface of the mating plate 44 Through holes 61 and 63 penetrating to the lower surface of 60 are formed. Bolts 62 are inserted into the through holes 61 and 63 and fastened with nuts 64 so that the mating plates 44, 48, 52, 56 and 60 can move together.

  The lower chord material 112 (see FIG. 1) described above and a part of the connecting plate 122 provided near the center of the lower chord material 112 and one end (right end) of the mating plate 52 are made of a steel plate. It is clamped between a pair of presser plates 123 and 125.

  The presser plate 123, the mating plate 52, the connection plate 122, and the presser plate 125 are formed with through holes 79 and 81 that penetrate from the upper surface of the presser plate 123 to the lower surface of the presser plate 125. Bolts 78 are inserted into the through holes 79 and 81 and fastened with nuts 80, whereby one end of the mating plate 52 is fixed to the connection plate 122.

  With the above configuration, the plate materials 20, 24, 28, 30, 34, 38 and the sliding material 68 move together, and the mating plates 44, 48, 52, 56, 60 slide on the upper or lower surface of the sliding material 68. By rubbing, the plate members 20, 24, 28, 30, 34, 38 and the counterpart plates 44, 48, 52, 56, 60 can be moved relative to each other.

  Note that, as shown in FIG. 3a, the plate members 20, 24, 28, 30, 34, 38, the sliding member 68, and the clamp plates 65 to 66 including the mating plates 44, 48, 52, 56, 60 are used. One set of the multi-stage structure up to this will be referred to as a part 11 as a structural unit of the friction damper 10 (see FIG. 1). In the present embodiment, the friction damper 10 is composed of five parts 11.

  Next, the surface pressure distribution of the sliding material 68 due to the fastening of the fastening plates 65 and 66 will be described.

  In the friction damper 10, when the surface pressure distribution of the friction surface between the sliding material 68 and the mating plates 44, 48, 52, 56, 60 is significantly uneven, etc., the various dependencies and durability performance of the friction damper 10 are affected. There is a possibility of effect. In addition, it is uneconomical to restrain the region where the surface pressure is not distributed by the fastening plates 65 and 66.

  For this reason, uniaxial compression is applied to the appropriate values for the plate thickness of the fastening plates 65, 66, the size of the sliding material 68, and the diameter of the PC steel rod 74 so that the surface pressure distribution of the sliding material 68 is as uniform as possible. Confirm by testing.

  As shown in FIG. 5 b, a uniaxial compression test is performed using a uniaxial compression tester 150.

  The uniaxial compression tester 150 sandwiches a test body 90 that is an object of the uniaxial compression test between a load cell 152 and a tester bottom surface 156 via a plain washer 154 and compresses the test body 90 in the vertical direction. Yes.

  In the test body 90, the pressure measurement film 98 is placed on the upper surface of the mating plate 99 in which the long hole 158 is formed, and the mating plate 99 and the pressure measurement film 98 are sandwiched between a pair of upper and lower sliding plates 96. The sliding plate 96 is sandwiched between a pair of upper and lower plate members 94, and the plate member 94 is sandwiched between a pair of upper and lower clamping plates 92.

  The fastening plate 92, the plate member 94, the sliding member 96, and the mating plate 99 are all the aforementioned fastening plates 65, 66, the plate members 20, 24, 28, 30, 34, 38, the sliding member 68, and It is made of the same material as the mating plates 44, 48, 52, 56, 60.

  The fastening plate 92 was prepared in a total of four types with a plate thickness of 22 mm or 30 mm, a square shape, and a round shape. Further, the clamping plate 92 considers the surface pressure distribution from the flat washer 154 to be 60 ° distribution, and in order to obtain a plane size larger than this surface pressure distribution, the square plate has one side, and the round plate has a diameter. Are each 180 mm. The fastening plate 92 is formed with a through hole 93 having an inner diameter of 22 mm that penetrates from the upper surface to the lower surface.

  As the pressure measuring film 98, a medium for medium pressure (measurable area 10 to 50 MPa) manufactured by Fuji Film Co., Ltd. is used.

  As shown in FIGS. 5 a and 5 b, the sliding material 96 is divided into two parts and arranged near both sides of the long hole 158.

  Here, 200 kN was loaded in the uniaxial compression tester 150, and adjustment was performed so that a load of 100 kN was loaded on each flat washer 154. The load was managed by the load cell 152.

  Table 1 shows the results of evaluating the surface pressure distribution of the specimen 90 using the uniaxial compression tester 150. The region where the color density of the pressure measuring film 98 is visually confirmed is a region where the friction surface is effectively pressed. This was represented by the width in the X and Y directions.

表１によると、各試験条件において、Ｘ、Ｙ方向の幅が１０２ｍｍ〜１４３ｍｍの範囲において、面圧分布が均等となっていることが分かる。

According to Table 1, it can be seen that, under each test condition, the surface pressure distribution is uniform in the range where the width in the X and Y directions is 102 mm to 143 mm.

  Therefore, it is preferable that the sliding material 68 has a size inscribed in a quadrangle having a side length of 100 mm or more and 145 mm or less obtained by engineering the above value.

  Further, even if the plate thickness of the clamping plate 92 is changed to 22 mm and 30 mm, no significant difference is seen in the surface pressure distribution, so the plate thickness of the clamping plate 92 can be set in the range of 22 mm to 30 mm. .

  As a result, since the through hole 93 having a diameter of 22 mm is formed in the fastening plate 92, the diameter of the PC steel rod inserted into the through hole 93 is 17 to 19 mm.

  Next, the operation of the first embodiment of the present invention will be described.

  6a to 6c show a state of relative movement between the plate members 20, 24, 28, 30, 34, 38 and the counterpart plates 44, 48, 52, 56, 60. FIG. For the convenience of explanation, the movement amounts of the mating plates 44, 48, 52, 56, 60 are shown with the plate members 20, 24, 28, 30, 34, 38 as a reference (fixed) side.

  As shown in FIG. 6a, when the building 100 (see FIG. 1) is not shaken by an earthquake or the like, the plate members 20, 24, 28, 30, 34, 38 and the counterpart plates 44, 48, 52, 56, 60 Is stationary.

  Subsequently, as shown in FIG. 6 b, a shaking such as an earthquake occurs, and the counter plates 44, 48, 52, 56, 60 are distanced in the −X direction with respect to the plate materials 20, 24, 28, 30, 34, 38. When the relative movement is performed at d1, the sliding member 68 is integrated with the plate members 20, 24, 28, 30, 34, 38, and therefore the interface between the sliding member 68 and the mating plates 44, 48, 52, 56, 60 ( Frictional force is generated on the friction surface.

  When this frictional force is F1, the vibration energy of shaking is attenuated by an energy corresponding to F1 × d1.

  Subsequently, as shown in FIG. 6 c, an earthquake or the like occurs, and the counter plates 44, 48, 52, 56, 60 are d1 in the + X direction with respect to the plate materials 20, 24, 28, 30, 34, 38. When the relative movement from the position is performed at the distance d2, a frictional force is generated at the interface (friction surface) between the sliding material 68 and the counterpart plates 44, 48, 52, 56, and 60.

  This frictional force is a force whose magnitude is approximately equal to F1 and opposite in direction. Assuming that this is F2, the vibration energy of the vibration is attenuated by the energy corresponding to F2 × d2.

  Thus, the vibrational energy of the vibration is gradually attenuated by the frictional force F1 or F2 generated on the friction surface between the sliding material 68 and the mating plates 44, 48, 52, 56, 60, and the building 100 is controlled. Is called.

  Here, the friction surface between the sliding member 68 and the mating plates 44, 48, 52, 56, 60 is equal and effective by the combination of the PC steel rod 74 passing through the centroid of the sliding member 68 and the fastening plates 65, 66. Therefore, the frictional force of the friction damper 10 and the durability of the sliding material 68 can be managed with high accuracy.

  In addition, since there are a plurality of sliding materials 68 and mating plates 44, 48, 52, 56, and 60 and the friction surfaces are multi-stepped, even if the area of the sliding material 68 is reduced and the shape of the friction damper 10 is reduced. It is not necessary to reduce the entire friction area. For this reason, the shape of the friction damper 10 can be made compact, and the freedom degree of the installation to the building 100 increases.

  Further, since the projected position of the clamping plates 65 and 66 in the axial direction of the PC steel rod 74 and the position of the sliding material 68 coincide with each other, when the PC steel rod 74 is tightened, the sliding material 68 and the mating plate 44 are aligned. , 48, 52, 56, and 60, the frictional force distribution on the frictional surface is not shifted, and the frictional force can be made uniform.

  Further, since the sliding member 68 is fixed to the plate members 20, 24, 28, 30, 34, 38 at a predetermined interval, even if the friction area is increased, the plate members 20, 24, 28, 30, 34, It is easy to equalize the pressing force by the PC steel rod 74 at each point of 38, and the frictional force can be made uniform.

  Furthermore, in general, when the sliding material 68 is pressed, the pressure spreads in a coarse and dense manner. However, the fastening plate 65 has a size in which the sliding material 68 is inscribed in a square having a side length of 100 mm or more and 145 mm or less. , 66 are square or circular plates having a thickness of 22 mm or more and 32 mm or less, so that the pressing force can be transmitted uniformly and effectively over almost the entire surface of the sliding material 68.

  Next, a second embodiment of the friction damper and the friction damper unit of the present invention will be described with reference to the drawings. Note that the same reference numerals as those in the first embodiment are given to the same elements as those in the first embodiment described above, and the description thereof is omitted.

  FIG. 7 shows a front view of the friction damper unit 130 in which five sets of the friction dampers 10 (see FIG. 2) are arranged in the vertical direction. The friction damper unit 130 is provided in a part of the lower chord material 112 (see FIG. 1) of the building 100 described above.

  As shown in FIG. 7, the left end portion of the friction damper unit 130 is connected to a connection plate 126 protruding outward from the side surface of the column portion 102 (see FIG. 1) of the building 100 by a bolt 14 and a nut (not shown). It is connected.

  Further, the right end portion of the friction damper unit 130 constitutes a part of the lower chord material 112 and is connected to a connection plate 128 provided near the center portion of the lower chord material 112 by a bolt 78 and a nut (not shown).

  The friction damper unit 130 includes friction dampers 10A, 10B, 10C, 10D, and 10E. That is, the friction damper unit 130 is provided with a total of 25 parts 11 that attenuate vibration energy by frictional force.

  Next, the operation of the second embodiment of the present invention will be described.

  8a to 8c show the relative movement states of the plate members 20, 24, 28, 30, 34, 38 and the counterpart plates 44, 48, 52, 56, 60 in the friction damper unit 130. FIG.

  For convenience of explanation, the friction damper 10A will be described among the friction dampers 10A, 10B, 10C, 10D, and 10E. Further, the movement amounts of the mating plates 44, 48, 52, 56, and 60 are shown with the plate members 20, 24, 28, 30, 34, and 38 as a reference (fixed) side.

  As shown in FIG. 8a, when the building 100 (see FIG. 1) is not shaken such as an earthquake, the plate members 20, 24, 28, 30, 34, 38 and the counterpart plates 44, 48, 52, 56, 60 Is stationary.

  Subsequently, as shown in FIG. 8 b, a shaking such as an earthquake occurs, and the counter plates 44, 48, 52, 56, 60 are distanced in the −X direction with respect to the plate materials 20, 24, 28, 30, 34, 38. When the relative movement is performed at d3, the sliding member 68 is integrated with the plate members 20, 24, 28, 30, 34, 38, and therefore, the interface between the sliding member 68 and the mating plates 44, 48, 52, 56, 60 ( Frictional force is generated on the friction surface.

  When this frictional force is F3, the vibration energy of shaking is attenuated by an energy corresponding to F3 × d3.

  Subsequently, as shown in FIG. 8c, a shaking such as an earthquake occurs, and the counter plates 44, 48, 52, 56, 60 are d3 in the + X direction with respect to the plate materials 20, 24, 28, 30, 34, 38. When the relative movement from the position is performed at a distance d4, a frictional force is generated at the interface (friction surface) between the sliding material 68 and the mating plates 44, 48, 52, 56, 60.

  This friction force is a force having a magnitude approximately equal to F3 and opposite in direction. If this is F4, the vibration energy of the vibration will be attenuated by the energy corresponding to F4 × d4.

  As described above, the vibrational energy F3 or F4 generated on the frictional surface between the sliding material 68 and the mating plates 44, 48, 52, 56, and 60 gradually attenuates the vibrational vibration energy, and the building 100 is controlled. Is called.

  Here, the number of attachments of the sliding member 68, the fastening plates 65 and 66, the plate members 20, 24, 28, 30, 34 and 38 and the mating plates 44, 48, 52, 56 and 60, that is, the number of attachments of the part 11. Because it is possible to adjust the damping force of the vibration, the management of the damping force of the vibration becomes easy. Further, by arranging the friction dampers 10A to 10E in parallel, the friction dampers 10A to 10E can be developed both in the vertical direction and in the horizontal direction.

  In addition, this invention is not limited to said embodiment.

  The friction damper 10 and the friction damper unit 130 may be disposed not only so that the friction surfaces between the plate material and the sliding material are substantially perpendicular to the ground but also substantially parallel to each other.

  Further, the friction damper 10 and the friction damper unit 130 may be provided on the beam portion 104 of the building 100.

  Further, the friction damper unit 130 may include not only five sets of the friction dampers 10 but also a plurality of two or more sets arranged in parallel.

  Each plate member and each counter plate may be not only 6 sheets and 5 sheets, but also 1 sheet or a plurality of sheets, and the number of sheets can be selected as appropriate. Moreover, the thickness of a board | plate material and the other party board may be the same, and one side may be thick.

  The sliding material 68 is not only provided at five locations along the moving direction of each plate material, but may be attached at one location with a large area, or may be attached at two or more locations.

(A) It is a general view of the building in which the friction damper which concerns on 1st Embodiment of this invention was provided. (B) It is the elements on larger scale of the building in which the friction damper which concerns on 1st Embodiment of this invention was provided. (A) It is a front view of the friction damper which concerns on 1st Embodiment of this invention. (B) It is sectional drawing of the friction damper which concerns on 1st Embodiment of this invention. (A) It is an exploded view of the parts of the friction damper which concerns on 1st Embodiment of this invention. (B) It is a top view of the sliding material which concerns on 1st Embodiment of this invention. (C) It is a top view of the other party board concerning a 1st embodiment of the present invention. It is a partial exploded view of the friction damper concerning a 1st embodiment of the present invention. (A) It is a top view of the test body in the pressure distribution test of the friction damper which concerns on 1st Embodiment of this invention. (B) It is a side view of the test body in the pressure distribution test of the friction damper which concerns on 1st Embodiment of this invention. It is a schematic diagram which shows the movement state of the friction damper which concerns on 1st Embodiment of this invention. It is a front view of the friction damper unit which concerns on 2nd Embodiment of this invention. It is a schematic diagram which shows the movement state of the friction damper unit which concerns on 2nd Embodiment of this invention.

Explanation of symbols

10 Friction damper (friction damper)
20 Plate material (plate material)
24 Plate material (plate material)
28 Plate material (plate material)
30 Plate (Plate)
34 Plate material (plate material)
38 Plate material (plate material)
44 Mating plate (Mating plate material)
48 Mating plate (Mating plate material)
52 Mating plate (mating plate material)
56 Mating plate (Mating plate material)
60 Mating plate (mating plate material)
65 Clamping plate (clamping member)
66 Tightening plate (Tightening member)
68 Sliding material (sliding material)
70 long hole (long hole)
72 Through hole (plate hole)
74 PC steel bar (PC steel bar)
100 Building 120 Connection board (one building structure)
122 Connection board (other building structures)
126 Connection board (one building structure)
128 connection board (other building structures)
130 Friction damper unit (friction damper unit)

Claims (5)

A plurality of plates stacked at intervals and attached to a single building structure;
A plate hole portion that is formed at a predetermined interval in the longitudinal direction of the plate material and through which the fastening member is inserted;
A sliding material fixed to the plate so as to cover a predetermined range centered on the hole core of the plate hole,
A plurality of mating plate members that are inserted into the interval and are brought into contact with the sliding material and attached to another building structure that moves relative to the one building structure;
An elongated hole that is formed in the mating plate material and is movable relative to the fastening member inserted into the plate hole portion;
A pair of clamping plates that are provided at both ends of the clamping member protruding from the outermost part of the laminated plate materials, and for crimping the plate material and the mating plate material with the clamping force of the clamping member;
A friction damper, characterized by comprising: The tightening member is a PC steel bar that tightens the tightening plate together with a nut;
2. The friction damper according to claim 1, wherein a predetermined range covered by the sliding material in the axial direction of the PC steel bar coincides with a projection position of the fastening plate.   The friction damper according to claim 1 or 2, wherein the sliding member is fixed to the plate member at a predetermined interval.   The predetermined range covered by the sliding material is a circle inscribed in a square having a side length of 100 mm to 145 mm or a side having a side length of 100 mm to 145 mm, centered on the hole core of the plate hole portion. The range corresponding to the long hole is excluded, and the fastening plate is a square or round plate having a thickness of 22 mm or more and 30 mm or less. The friction damper described in 1.   The friction damper unit according to claim 3 or 4, wherein the friction dampers are arranged in parallel on the same surface.

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