JP3515103B1 - Building seismic protection - Google Patents

Abstract

[Problem] To be easily manufactured and have a long life. A damping mechanism and a restoration mechanism are provided. One end of each of the link arms 21 and 22 of the damping mechanism 2 is a bracket 4.
The first and second frame arms 1 and 22 are rotatably connected to the vertical frame M1 and the horizontal frame M2 in a vertical plane. Friction plates are provided at the joints between the brackets 41 and 42 and the link arms 21 and 22, and at the joint between the link arms 21 and 22, respectively. The restoring mechanism 3 includes a spring plate 6 including plate pieces 61 and 62 whose base ends are coupled to brackets 41 and 42 with the plate surface being vertical, and the entire spring plate 6 is formed of a vertical frame M1 and a horizontal frame M2. It is spanned in an arc between them.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic device for a building, and more particularly to a seismic device for a building. The present invention relates to a seismic device which is installed to improve the earthquake resistance of the building. 2. Description of the Related Art Japanese Patent Application Laid-Open No. H11-163873 discloses this type of seismic device.
Providing two steel plates that are relatively displaced in the direction of the plate surface in response to vibration input, and sandwiching a viscoelastic body between them to reduce vibration, and use two leaf springs that connect the two steel plates An anti-seismic device provided along the surface of one of the steel plates and imparting an original shape restoring force is shown. [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-129675 [0003] However, in the above-mentioned conventional seismic device, it takes time to process a steel plate and vulcanize a viscoelastic body to the steel plate. There is a problem and the viscoelastic body may be deteriorated when used for a long time. There is also a problem that the vibration damping force by the viscoelastic body and the original shape restoring force by the leaf spring cannot be easily changed and adjusted. Accordingly, the present invention has been made to solve such a problem, and an object of the present invention is to provide a seismic device which can be manufactured easily, has a long life, and can easily change and adjust the vibration damping force and the original shape restoring force. Aim. In order to achieve the above object, in the first invention, a vertical frame (M1) and a horizontal frame (M1) of a building are provided.
The spring plate (6) disposed at the corner of (2) is composed of a first plate (62) and a second plate (61), and the first plate (62) is a circular arc having a constant width. The base end is connected to a first bracket (41) provided on a vertical frame (M1) in a state where the plate surface is vertical, and the second plate piece (61) is formed into an arc shape having a constant width. The base end is joined to the second bracket (42) provided on the horizontal frame (M2) in a state where the plate surface is vertical and
In addition, the protruding portion (612) formed at the tip of one plate piece (61) is fitted into the recess (622) formed at the tip of the other plate piece (62) and joined together, The whole spring plate (6) is extended in an arc between the vertical frame (M1) and the horizontal frame (M2). The spring plate may be singular or plural. In the first aspect of the invention, when the vertical frame of the building is tilted with respect to the horizontal frame due to the vibration input, the curvature of the spring plate changes in response to the tilt, thereby generating an original shape restoring force. The original restoring force of the spring plate at this time is exerted with an appropriate magnitude by mainly deforming the tip of the other plate piece in contact with the upper edge or lower edge of the protruding portion of one plate piece. At this time, the protruding portion and the end of the plate piece in contact with the protruding portion slide relative to each other, and a vibration damping force is also generated by the frictional resistance. In the first invention, the original shape restoring force can be easily adjusted by changing the spring plate. [0009] The reference numerals in parentheses indicate the correspondence with specific means described in the embodiments described later. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a seismic device 1 according to the present invention has a vertical member (column) M1 and a horizontal member (joist or beam) of a building.
It is installed at the corner of M2. The earthquake-resistant device 1 includes a damping mechanism 2 and a restoring mechanism 3, and details thereof are shown in FIG. The damping mechanism 2 includes two link arms 21 and 22.
One end 211, 221 of each of the link arms 21, 22 has a bracket 41, 4 provided on the vertical frame M1 and the horizontal frame M2, respectively.
2 is connected rotatably in a vertical plane. That is,
Each of the link arms 21 and 22 has both ends 211 and 212,
221 and 222 are formed into a semicircular shape and provided in parallel (FIG. 3) with a pair of long plates 213 and 223, and the end portions 211, 212, 221, and 221 of these long plates 213 and 223 are provided.
The link arms 21 and 22 or the link arms 21 and 22 and the brackets 41 and 42 are rotatably connected to each other by bolts 43 that pass through the 222 horizontally. The end 2 of the long plate 223 of the link arm 22
A cylindrical spacer 44 (FIG. 4) is provided between the two long plate members 223 to maintain the interval between the two long plate members 223.
A friction plate 51 is provided on the outer surface of each of the end portions 221 of the third. As the friction plate 51, for example, Nichias Corporation
Circular friction plate (Model 6100-A) can be used. A bolt insertion hole 511 that matches the bolt insertion hole of the long plate body 223 is provided at the center of the friction plate 51. The bracket 41 is formed by forming a plate material into a substantially U-shape. Bolts 43 (FIG. 3) are inserted between the bolt insertion holes 411 provided on both side walls (only one is shown in FIG. 4). On the wall surface of each side wall, the bolt insertion hole 521 at the center is aligned with the bolt insertion hole 411 so that the friction plate 51
A friction plate 52 similar to the above is provided. Link arm 2
In a state in which the bracket 2 is connected to the bracket 41, the plate surfaces of the long plate body 223 facing each other and the friction plates 51 and 52 provided on the side wall surface of the bracket 41 are in contact with each other. End 2 of long plate 223 of link arm 22
Similarly, a cylindrical spacer 44 similar to the above is disposed between the outer surfaces of the end portions 222 and the inner surface of the end portion 212 of the long plate 213 of the link arm 21 opposed thereto. The same friction plates 51 as described above are provided, and both are in contact with each other. A cylindrical spacer 44 similar to that described above is provided between the side walls of the U-shaped bracket 42, and the outer surface of the bracket side wall and the inner surface of the end portion 211 of the long plate 213 of the link arm 21 facing the same. The same friction plates 51 and 52 as described above are provided, and both are in contact with each other. In the damping mechanism 1 having the above structure, the link arms 21 and 22 are positioned so as to bulge away from the joint T between the vertical frame M1 and the horizontal frame M2 as shown in FIG. And at the corner of the horizontal frame M2. As shown in FIG. 5, the restoring mechanism 3 is constructed by stacking a plurality of spring plates 6 made of, for example, SUP material or SK material, and is bridged between the brackets 41 and 42 with both ends bolted. I have. Each spring plate 6 is formed in a circular arc shape having a constant width, and is disposed with the plate surface vertical.
Each spring plate 6 is composed of two types of plate pieces 61 and 62 (FIG. 6),
One plate piece 61 has a mounting hole 611 for the brackets 41 and 42 formed at the base end, and a protruding portion 612 formed at the front end. The protruding portion 612 has a gradually increasing width in the protruding direction, and the protruding end 613 has a relatively large circular shape. The other plate piece 62 has a mounting hole 621 for the brackets 41 and 42 at the base end and a recess 62 at the front end.
2 are formed. The recess 622 is located at the center of the plate width,
It is formed in a shape that accepts the protrusion 612 without any gap. That is, the center of the recess 622 is formed in a circular shape, and the width of the recess 622 gradually increases toward the tip. As shown in FIG. 6, the positions of the plate pieces 61 and 62 are interchanged in the adjacent spring plate 6, and in this state, the circular protruding end 613 of each plate piece 61 is located at the center in the longitudinal direction of each spring plate 6. are doing. The stacked spring plates 6 are held by a holding plate 63 (FIG. 5) provided so as to cover the entire periphery of the central portion. A circular recess 614 is formed at the center of the circular protruding end 613 of the plate piece 61 of each of the outermost spring plates 6 (only one is shown in FIG. 7), and a nut fixed to the holding plate 63 is formed. The distal end of the positioning bolt 64 penetrating the 631 prevents the spring plate 6 from shifting due to entering the concave portion 614. In the seismic device 1 having such a structure, when the vertical frame M1 of the building is tilted by vibration input so as to reduce the corner angle with the horizontal frame M2 as shown by a chain line in FIG.
Accordingly, the two link arms 2 constituting the damping mechanism 2
The posture of the link arms 21 and 22 changes, and the joint moves from the X point to the Y point, and the end portions 211 and
The joints 212, 221 and 222 rotate around the bolt 43 at the joints between the joints and the brackets 41 and 42. Thereby, the friction plates 51,
The members 52 slide relative to each other to generate a vibration damping force due to the resistance. At the same time, the spring plate 6 of the restoring mechanism 3 is deformed so as to increase its curvature as shown by a chain line in FIG. The original restoring force of each spring plate 6 at this time is
1 around the circular protruding end 613 (FIG. 6).
12 is exerted mainly by the deformation of the plate tip portion 623 in contact with the upper edge. At the same time, the protrusion 6
12 and the plate tip 623 in contact therewith slide relative to each other to generate a damping force due to the frictional resistance. When the vertical frame M1 of the building is tilted by a vibration input so as to increase the corner angle with the horizontal frame M2, which is opposite to the one shown by the chain line in FIG. The connecting portion of the link arms 21 and 22 is now X
From the point to the point Z, the ends 211, 212, 221, 222 of both link arms 21, 22 are connected to each other,
And bolts 43 at joints with the brackets 41 and 42.
And the friction plates 51,
52 slide relative to each other, and a vibration damping force is generated by the resistance. At the same time, the spring plate 6 of the restoring mechanism 3 is deformed so as to have a smaller curvature contrary to the one shown by the chain line in FIG. The original shape restoring force is exerted by mainly deforming the plate tip portion 624 in contact with the lower edge of the portion 612. As described above, the vibration damping force of the damping mechanism 2 and the original shape restoring force of the restoring mechanism 3 are exerted against the tilt of the vertical frame M1 due to the vibration input, thereby improving the earthquake resistance of the building. In this embodiment, since a friction plate is provided at the end of the link arm which rotates relatively to constitute a damping mechanism, a steel plate is processed or a viscoelastic body is added to the steel plate as in the prior art. It can be easily manufactured without the need for labor such as sulfur bonding. Further, there is no problem that the viscoelastic body is deteriorated and the life of the seismic device is shortened as in the related art. Further, in the present embodiment, the damping mechanism including the link arm and the friction plate and the restoring mechanism including the spring plate have a structure independent of each other. Therefore, the vibration damping force and the original shape restoring force can be easily changed and adjusted independently. Can be. In the above embodiment, the bracket 41,
42 are provided directly on the vertical frame M1 and the horizontal frame M2, but the brackets 41 and 42 are fixed to the two substrates hingedly connected to each other so that the opening angle is variably set. The respective substrates may be fixed to the vertical frame M1 and the horizontal frame M2 in a state where they are positioned at the corners of the horizontal frame M2 and the horizontal frame M2, respectively. According to this, the damping mechanism 2 and the restoring mechanism 3 are previously installed between the substrates to form a unit, and each substrate may be fixed to the vertical frame M1 and the horizontal frame M2 on site, so that the mounting operation is efficient. Can be In particular, when the vertical frame M1 and the horizontal frame M2 are made of wood, it is advantageous in that a substrate having a relatively large area can be attached to the vertical frame M1 or the like by dispersing the fixing portions. In the above embodiment, the friction plates do not necessarily need to be provided at both ends of each link arm, but may be provided only at the ends connecting the link arms. Further, it is not always necessary to provide a pair of friction plates at each end, and three or more or one friction plate may be used. The shapes of the projections and recesses of the plate pieces of the spring plate need not necessarily be those of the above-described embodiment, but according to the shape shown in the above-described embodiment, the curved deformation of the tip of the plate piece of the spring plate can be smoothly performed. Can be done. If the building has a sufficient original shape restoring force, it is not always necessary to provide a restoring mechanism. When the vibration damping force of the building itself is sufficient, it is not always necessary to provide a damping mechanism. As described above, the antiseismic device of the present invention can be easily manufactured and has a long life, and the vibration damping force and the original shape restoring force can be independently changed and adjusted.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing a schematic frame structure of a building provided with a seismic device of the present invention. FIG. 2 is an overall side view of the shockproof device of the present invention. FIG. 3 is a plan view of a damping mechanism. FIG. 4 is an end exploded perspective view of the damping mechanism. FIG. 5 is a perspective view of a restoration mechanism. FIG. 6 is a perspective view of a spring plate. FIG. 7 is a sectional view of a main part of a restoration mechanism. [Description of Signs] 1 ... Earthquake-proof tool, 2 ... Dampening mechanism, 21,22 ... Link arm, 3 ... Restoration mechanism, 41,42 ... Bracket, 51,5
Reference numeral 2 denotes a friction plate, 6 denotes a spring plate, 61 denotes a plate, 612 denotes a protruding portion, 62 denotes a plate, 622 denotes a recess, M1 denotes a vertical frame, and M2 denotes a horizontal frame.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-10-169244 (JP, A) JP-A-2001-207679 (JP, A) JP-A-2001-295506 (JP, A) JP-A-2000-45559 (JP) , A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04H 9/02 301 E04H 9/02 311 E04B 1/58 F16F 15/00-15/36

Claims (1)

(57) [Claim 1] A spring plate provided at a corner portion of a vertical frame and a horizontal frame of a building is composed of a first plate piece and a second plate piece, and the first plate is provided. The piece is formed into an arc shape having a constant width, and a base end thereof is coupled to a first bracket provided on the vertical frame in a state where the plate surface is vertical, and the second plate piece is formed into an arc shape having a constant width. Molded, the base end is connected to the second bracket provided on the horizontal frame in a state where the plate surface is vertical, and the protruding portion formed at the tip of one plate is attached to the tip of the other plate. A seismic device for a building, wherein the spring plate is entirely fitted in the formed recess and connected to each other, and the entire spring plate is bridged between the vertical frame and the horizontal frame in an arc shape.