JP2009150112A - Earthquake resistant system for structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an earthquake resistant system for a structure, which allows a central bearing board to smoothly rotate in a direction along an annular ring upon reception of vibration by a plurality of spheres, positively and quickly absorbs vibration in every direction, positively and smoothly cushions a shock, exerts superior vibration resistance, is simple in structure, superior in stability and durability, easy to handle, fit for mass production, and economical. <P>SOLUTION: In the earthquake resistant system, a base isolation device A is formed of a lower bearing board 1, an upper bearing board 3, the central bearing board 2, and the plurality of spheres 4. An upper surface of the lower bearing board 1 and a lower surface of the upper bearing board 3 have secured therein sphere receiving grooves 5, 7 whose groove bottom portions are each formed into an annular flat surface. The central bearing board 2 has formed therein a central circular hole 13 into which a central projection 8 of the lower bearing board 1 is storable, and has sphere receiving grooves 6 formed in upper and lower surfaces thereof. An earthquake resistant connection device B is mounted in the system so as to connect between a lower mounting fitting B1 and an upper mounting fitting B2, and set up such that a built-in elastic spring 35 functions to draw back the lower mounting fitting B1 and the upper mounting fitting B2 to respective predetermined locations. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention can exhibit excellent earthquake resistance by appropriately interposing between a ground side structure such as a concrete foundation and an earthquake resistant side structure such as a wooden base in a building structure or the like as appropriate. It is related to the seismic system for a structure as described above, can absorb this reliably and quickly against vibrations in all directions, can buffer this reliably and smoothly against shocks, and has a simple configuration, The present invention relates to a seismic system for a structure that is excellent in durability, suitable for mass production, and economical.

Conventionally, various types of seismic systems for this type of structure have been disclosed. For example, there is a seismic support device for a structure as shown in Patent Document 1.
This is a support device for mounting a foundation of a structure on a concrete foundation, a dish-like support having a substantially dish-shaped recess between the foundation and the foundation, a ball-shaped support and a spring in contact with the recess, etc. A plurality of sets of buffer means, and the ball-shaped support is rotatably fitted to a lower end of a support rod that is mounted on a base via a buffer spring so as to be movable up and down. The body is fixed upward on the foundation.
Further, the movement restricting means includes a buffer cylinder containing a coil spring or pressure fluid and a piston provided at the end of the piston rod, a ball fixed to the head of the cylinder, and a ball connected to the outer end of the piston rod. And a ball receiver attached to the base and the foundation so as to face each other.

  However, in the seismic support device as described above, since one ball-shaped support rolls in a substantially dish-shaped recess of the dish-shaped support, the difficulty that the ball-shaped support is difficult to withstand a large load. In addition, there are difficulties such as poor stability, difficulty in absorbing vibration, and difficulty in quickly absorbing vibration.

  The movement restricting means is locked by a ball fixed to the cylinder head, a locking ball connected to the outer end of the piston rod, and a ball receiver attached to the base and the foundation in an opposing manner. Therefore, for example, there is a difficulty that it is difficult to smoothly follow relatively large vibrations. Furthermore, when a relatively large load is applied, there is a possibility that the locking ball may deviate from the ball receiver.

Therefore, the inventor of the present application created a seismic system for a structure as shown in Patent Document 2 in order to solve the above-mentioned difficulties.
This is a seismic system for a structure that is configured by interposing a plurality of seismic coupling devices and seismic isolation devices between a ground side structure and a seismic side structure that are arranged at appropriate intervals. The seismic coupling device is mounted so as to connect a lower side fixture fixed to the ground side structure by an appropriate means and an upper side fixture fixed to the earthquake resistant side structure by an appropriate means. A cylindrical case, a lower lid attached to the lower opening portion of the case, an upper lid attached to the upper opening portion of the case, and a lower portion slidably inserted into the insertion hole of the lower lid A rod, an upper rod that is rotatably inserted into the insertion hole of the upper lid, a spring receiver that is mounted on the base end portion of the lower rod, and that is mounted on the base end portion of the lower rod; A bearing receiver attached to the proximal end of the rod, a lower lid, An elastic spring that is compressed between the pulling receiver and a thrust bearing that is interposed between the upper lid and the bearing receiver, and the seismic isolation device is disposed in the vicinity of the seismic coupling device, A mounting plate fixed to the side structure by appropriate means, a mounting plate fixed to the earthquake-resistant side structure by appropriate means, and a lower receiving plate, a central receiving plate and an upper receiving device interposed between the pair of mounting plates. And a plurality of spheres interposed between the lower receiving plate and the central receiving plate, and between the central receiving plate and the upper receiving plate, respectively. Sphere receiving groove portions which are curved surfaces in the width direction are formed, and spherical groove receiving groove portions which are substantially planar and have a curved surface in the width direction are formed on the upper and lower surfaces of the central receiving plate, respectively. A sphere that is formed and has a substantially annular shape on the lower surface of the upper receiving plate and a curved surface in the width direction. A plurality of spheres are formed between the spherical receiving groove portion of the lower receiving plate and the spherical receiving groove portion of the central receiving plate, and between the spherical receiving groove portion of the central receiving plate and the spherical receiving groove portion of the upper receiving plate, respectively. It is configured to be interposed.

Japanese Patent No. 2831313 JP 2006-125503 A

The inventor of the present application has continued research and development so as to provide a more excellent seismic system for a structure by improving this without satisfying the above-described invention.
That is, it can absorb this more reliably and quickly against vibrations in all directions, can more reliably and smoothly absorb this against shocks, and can exhibit better earthquake resistance, It is easier to withstand, more stable, more easily absorbs vibrations, enables faster absorption of vibrations, simplifies the configuration, and excels in durability. It has been tackled as an issue to make it easy to handle.

  Therefore, in order to achieve the above-described problems, in the seismic system for a structure according to claim 1, the ground-side structure G and the seismic-side structure H arranged at appropriate intervals are provided. Between the seismic isolation device A and the seismic coupling device B, and the seismic isolation system A is fixed to the ground side structure G by appropriate means. A lower receiving base 1, an upper receiving base 3 fixed to the seismic structure H by appropriate means, a central receiving base 2 interposed between the lower receiving base 1 and the upper receiving base 3, and a lower receiving base A plurality of spheres 4 are provided between the board 1 and the central receiving board 2 and between the central receiving board 2 and the upper receiving board 3, respectively. A spherical receiving groove portion 5 having an annular shape and having a groove bottom at an annular flat surface is formed, and a central protruding portion 8 is formed at the central portion thereof. Is formed with a spherical receiving groove portion 7 which has a substantially annular shape and has a flat bottom surface at the bottom of the groove, and the central receiving plate 2 has a central circular hole in which the central protruding portion 8 can be accommodated. 13 are formed in a substantially planar annular thick plate shape, and spherical receiving grooves 6 having a substantially annular shape are formed on the upper and lower surfaces thereof, and the plurality of spherical bodies 4 are formed in the spherical receiving grooves 5 of the lower receiving disc 1. And the spherical receiving groove 6 of the central receiving plate 2 and between the spherical receiving groove 6 of the central receiving plate 2 and the spherical receiving groove 7 of the upper receiving plate 3, respectively. The device B is mounted and incorporated so as to connect a lower-side fixture B1 fixed to the ground side structure G by appropriate means and an upper-side fixture B2 fixed to the earthquake-resistant side structure H by appropriate means. So that the spring force of the spring spring 35 pulls back the lower fixture B1 and the upper fixture B2 to a predetermined position. Was adopted means be configured to use.

  In the seismic system for a structure according to claim 2, the seismic coupling device B includes a pair of cylinders 30 and 31 formed so as to be extendable in a substantially horizontal direction, and the pair of cylinders 30. , 31 provided in a resilient spring 35, a pair of link attachment plates 33, 34 attached to both ends of the pair of cylinders 30, 31, and an upper end portion of the pair of link attachment plates 33, 34. A plurality of portions arranged so as to connect the attachment portion 46 and the attachment ring 46 of the upper attachment fixture B2 and the attachment portion provided at the lower end portion of the pair of link attachment plates 33 and 34 and the attachment ring 47 of the lower attachment fixture B1. A connecting link 45, and when the distance between the mounting ring 46 of the upper side mounting tool B2 and the mounting ring 47 of the lower side mounting tool B1 is increased, a pair of link mounting pres With mutual spacing bets 33 and 34 decreases, employing the means constituting the elastic spring 35 to elastically compressible.

  Furthermore, in the seismic system for structure according to claim 3, the lower side fixture B <b> 1 is disposed on a base 60 fixed to the ground side structure G by appropriate means, and an upper part of the base 60. A fixed plate 61 having an insertion circular hole 71, a movable lower plate 62 that contacts the lower surface of the fixed plate 61 via a plurality of spheres 65, and a movable plate that contacts the upper surface of the fixed plate 61 via a plurality of balls 66. An upper plate 63, a movable lower plate 62 and a movable upper plate 63 that are penetrated and attached, an attachment rod 64 that is movable in the insertion circular hole 71, and an attachment ring 47 that is fixed to the upper end portion of the attachment rod 64 The mounting rod 64 is configured to be movable in the horizontal direction within a predetermined range.

  Therefore, according to the seismic system for a structure of claim 1, for example, by interposing between the ground side structure G such as the foundation and the earthquake resistant side structure H such as the foundation, On the other hand, this can be absorbed reliably and quickly, and it can be buffered reliably and smoothly against an impact, and excellent earthquake resistance can be exhibited. Moreover, the structure is simple, excellent in stability and durability, easy to handle, suitable for mass production, and an economical seismic system for structures.

The seismic isolation device A includes a lower receiving base 1 fixed to the ground side structure G by appropriate means, an upper receiving base 3 fixed to the earthquake resistant side structure H by appropriate means, a lower receiving base 1 and an upper part. A plurality of intermediate receiving plates 2 interposed between the receiving plates 3, a lower receiving plate 1 and a central receiving plate 2, and a central receiving plate 2 and an upper receiving plate 3. And a sphere receiving groove portion 5 having a substantially annular shape and having a flat bottom surface at the bottom of the groove, and a central protruding portion 8 at the central portion thereof. And a spherical body receiving groove portion 7 having a substantially annular plane and having a groove bottom portion formed into an annular flat surface is formed on the lower surface of the upper receiving plate 3, and the central receiving plate 2 has the central protruding portion 8. Is formed in a substantially planar annular thick plate shape having a central circular hole 13 that can accommodate a spherical shape, and a spherical body receiving groove portion 6 having a planar annular shape is formed on the upper and lower surfaces thereof. The plurality of spheres 4 are formed between the sphere receiving groove 5 of the lower receiving plate 1 and the sphere receiving groove 6 of the central receiving plate 2 and between the spherical receiving groove 6 and the upper receiving plate 3 of the central receiving plate 2. Since it is configured so as to be interposed between the receiving groove portions 7, it becomes easy to withstand a large load with a plurality of spheres 4, and stability is improved, vibration is easily absorbed, and vibration is quickly absorbed. It becomes possible.
That is, for all vibrations (impacts) in all directions (front and rear, left and right, up and down), this energy is converted into a plurality of spheres 4 between the lower receiving plate 1 and the central receiving plate 2, and the central receiving plate 2 and the upper portion. The plurality of spheres 4 between the receiving plates 3 can be converted into horizontal rotation of the central receiving plate 2 and can be converted into free rotation of each sphere 4 to absorb vibration (impact) (buffer) ) Can be performed quickly and smoothly.

In particular, since the groove bottom portion of the sphere receiving groove portion 5 on the upper surface of the lower receiving plate 1 is an annular flat surface and the groove bottom portion of the sphere receiving groove portion 7 on the lower surface of the upper receiving plate 3 is an annular flat surface, a plurality of spheres 4 are provided. Is able to move smoothly in the direction along the ring with less rolling frictional resistance (or sliding frictional resistance) and in the width direction of the ring (including directions other than the direction along the ring) In addition, after moving in the direction of the vibration, the central receiving plate 2 gradually rotates in the direction along the ring.
In addition, since the central protrusion 8 is formed at the central portion of the spherical body receiving groove 5 on the upper surface of the lower receiving base 1, after the central receiving base 2 moves in the direction of vibration when receiving vibration. The inner peripheral side surface of the central circular hole 13 of the central receiving plate 2 is in contact with the central protruding portion 8 (and the outer peripheral side surface of the central receiving plate 2 is outside the spherical receiving groove 5 of the lower receiving plate 1). In the state of not contacting the inner peripheral side of the wing, the moving direction of the central receiving base 2 in the direction of vibration is surely guided in the rotational direction, and the central receiving base 2 is more converted to horizontal rotation. It will be smooth.

  Then, the seismic coupling device B is attached so as to connect the lower side fixture B1 fixed to the ground side structure G by appropriate means and the upper side fixture B2 fixed to the earthquake resistant side structure H by appropriate means. Since the elastic force of the built-in elastic spring 35 acts so as to pull back the lower side fixture B1 and the upper side fixture B2 to a predetermined position, the lower side fixture B1 and the upper side fixture The seismic coupling device B can reliably prevent the tool B2 from being separated too far, and the vibration can be absorbed by the elastic spring 35. Moreover, the lower side mounting tool B1 and the upper side mounting tool B2 Can be reliably pulled back to a predetermined position.

  In addition, according to the seismic system for structure according to claim 2, for example, it is excellent between the ground side structure G such as the foundation and the earthquake resistant side structure H such as the foundation placed on the foundation. It can exhibit high earthquake resistance, can absorb this reliably and quickly against vibrations in all directions, and can buffer shocks reliably and smoothly. In addition, the structure is simple, easy to handle, suitable for mass production, economical, and suitable for the seismic system for structures according to the present invention.

  Further, it becomes possible to smoothly follow a relatively large vibration, and even when a relatively large load is applied, a reliable operation can be expected without being damaged, and the durability is excellent.

  In particular, since it includes a pair of cylinders 30 and 31 formed so as to be expandable and contractable in a substantially horizontal direction, and a resilient spring 35 housed in the pair of cylinders 30 and 31, the ground side such as a foundation is provided. The structure G can be installed relatively compactly between the structure G and the earthquake-proof side structure H such as a base placed on the foundation, and the earthquake-resistant coupling device B is easy to install and handle. In addition, the elastic spring 35 can be set longer without difficulty, and the optimum seismic performance according to the building structure can be exhibited.

  Furthermore, according to the seismic system for a structure according to claim 3, it becomes possible to exhibit excellent seismic resistance even in the lower mounting fixture B1, and this is surely and quickly absorbed against vibrations in all directions. The shock can be buffered reliably and smoothly. Moreover, the lower-side fixture B1 is simple in structure, easy to handle, suitable for mass production, economical, and optimal for the seismic system for structures of the present invention.

  In particular, the mounting rod 64 moves horizontally within a predetermined range with respect to relatively large vibrations, can exhibit excellent earthquake resistance, and can absorb this reliably and quickly against vibrations in all directions, The shock can be buffered reliably and smoothly. Moreover, the ball 65 and the ball 66 enable smooth follow-up to vibrations, and even when a relatively large load is applied, reliable operation can be expected without damage, and excellent durability. It becomes.

Hereinafter, the present invention will be described based on illustrated examples as follows.
The present invention, for example, in an appropriate building structure or the like, is excellent in earthquake resistance by appropriately interposing between a ground side structure G such as a concrete foundation and an earthquake resistant side structure H such as a wooden base. It is a seismic system for a structure that can exhibit its properties, and includes a plurality of seismic isolation devices A and a plurality of seismic connection devices B arranged at appropriate positions.
The seismic isolation device A includes a lower receiving base 1 fixed to the ground side structure G by appropriate means, an upper receiving base 3 fixed to the earthquake resistant side structure H by appropriate means, a lower receiving base 1 and an upper part. A plurality of intermediate receiving plates 2 interposed between the receiving plates 3, a lower receiving plate 1 and a central receiving plate 2, and a central receiving plate 2 and an upper receiving plate 3. The sphere 4 is provided.
Further, on the upper surface of the lower receiving disc 1, a spherical receiving groove portion 5 having a substantially annular shape and having a flat bottom surface at the bottom of the groove is formed, and a central protrusion 8 is formed at the central portion thereof. On the lower surface of the receiving plate 3, a spherical receiving groove portion 7 having a substantially annular shape in plan and having an annular flat surface at the bottom of the groove is formed, and the central protruding portion 8 can be accommodated in the central receiving plate 2. In addition to the above-mentioned central circular hole 13, the upper and lower surfaces are each formed with a sphere receiving groove portion 6 having a substantially annular shape, and the plurality of spheres 4 are formed in the lower receiving plate 1. Between the spherical receiving groove 5 of the central receiving plate 2 and the spherical receiving groove 6 of the central receiving plate 2 and between the spherical receiving groove 6 of the central receiving plate 2 and the spherical receiving groove 7 of the upper receiving plate 3. It is.
On the other hand, the seismic coupling device B is mounted so as to connect the lower side fixture B1 fixed to the ground side structure G by appropriate means and the upper side fixture B2 fixed to the earthquake resistant side structure H by appropriate means. In addition, the resilient force of the built-in resilient spring 35 is configured to act so as to pull back the lower side fixture B1 and the upper side fixture B2 to a predetermined position.

The earthquake-resistant coupling device B includes a pair of cylinders 30 and 31 formed so as to be extendable in a substantially horizontal direction, a resilient spring 35 housed in the pair of cylinders 30 and 31, and a pair of cylinders. A pair of link mounting plates 33, 34 mounted on both end portions of 30, 31; a mounting portion provided at the upper end portion of the pair of link mounting plates 33, 34; a mounting ring 46 of the upper side mounting tool B2; It is assumed that a plurality of connecting links 45 are provided so as to connect the attachment portions provided at the lower end portions of the link attachment plates 33 and 34 and the attachment ring 47 of the lower attachment B1.
And when the mutual space | interval of the attachment ring 46 of upper side fixture B2 and the attachment ring 47 of lower side fixture B1 becomes large, while the mutual space | interval of a pair of link attachment plates 33 and 34 becomes small, The elastic spring 35 is configured to be elastically compressed.

  Further, the lower-side fixture B1 includes a base 60 that is fixed to the ground-side structure G by appropriate means, a fixed plate 61 that is disposed above the base 60 and has an insertion circular hole 71, and the fixed plate. A movable lower plate 62 that contacts the lower surface of 61 via a plurality of spheres 65, a movable upper plate 63 that contacts the upper surface of fixed plate 61 via a plurality of balls 66, a movable lower plate 62, and a movable upper plate 63. The mounting rod 64 has a mounting rod 64 that can be mounted through and can be moved in the insertion circular hole 71, and a mounting ring 47 that is fixed to the upper end portion of the mounting rod 64. It is configured to be movable.

  The embodiment of the seismic system for a structure according to the present invention will be described. First, the seismic isolation device A shown in FIGS. 2 to 6 is appropriately placed horizontally on the ground side structure G such as a foundation of a building structure by an appropriate means. Lower receiving base 1 fixed (fixed via embedded bolts, anchor bolts, nuts, spacer block A1, other spacers, etc.) and seismic structure H such as the foundation of the building structure as appropriate In addition, it is horizontally interposed between the upper receiving plate 3 and the lower receiving plate 1 and the upper receiving plate 3 that are fixed horizontally (fixed via bolts, nuts, or spacers) by appropriate means. A central receiving plate 2 and a plurality of spheres 4 interposed between the lower receiving plate 1 and the central receiving plate 2 and between the central receiving plate 2 and the upper receiving plate 3 are provided.

The lower receiving plate 1 is configured in a substantially circular thick plate shape by an appropriate metal material (or an appropriate composite material having a relatively strong strength), for example, and has an upper surface having a substantially annular shape on the upper surface. A relatively deep and wide sphere receiving groove portion 5 is formed so that the bottom of the groove has an annular flat shape. In addition, a flange portion is formed at the lower peripheral edge portion, and the lower receiving base 1 is connected to the ground side structure G, the spacer block A1, and the ground side structure G using a plurality of through holes formed in the flange portion. It is formed so that it can be fixed to a mounting plate or the like that is fixed to the frame.
By the way, the spherical body receiving groove portion 5 is formed so that the groove bottom portion is flat in an annular shape so that the rolling wear resistance (or sliding friction resistance) of the spherical body 4 in the annular direction or the width direction is reduced. It is.
Furthermore, for example, a substantially cylindrical central projection 8 is projected from the central portion of the upper surface of the lower receiving plate 1, and a female screw portion 9 is drilled at the upper end surface of the central projection 8. Yes. A rotating cup 10 is mounted on the upper portion of the central protrusion 8 so as to surround it and to be rotatable forward and backward.
The rotating cup 10 is formed in a cylindrical shape whose upper part is closed by a top plate, and an attachment screw 12 screwed into the female screw portion 9 is inserted into an insertion hole 11 formed in the top plate. Thus, it is formed so as to be rotatable forward and backward in the horizontal direction with respect to the upper portion of the central protrusion 8.

The upper receiving plate 3 is configured in a substantially circular thick plate shape by an appropriate metal material (or an appropriate composite material having a relatively strong strength), for example, and has a substantially circular plane on the lower surface thereof. A relatively shallow (or deeper) wide sphere receiving groove portion 7 is formed so that the bottom of the groove has an annular flat shape. In addition, a flange portion is formed on the upper peripheral edge portion, and the upper receiving platen 3 is fixed to the earthquake-resistant side structure H or the earthquake-proof side structure H using a plurality of through holes formed in the flange portion. It is formed so that it can be fixed to a mounting plate or the like.
By the way, the spherical body receiving groove portion 7 is formed so that the bottom of the groove has an annular flat shape so that the rolling wear resistance (or sliding friction resistance) of the spherical body 4 in the annular direction, the width direction, and the like is reduced. It is.

The central part receiving plate 2 is formed of, for example, an appropriate metal material (or an appropriate composite material having a relatively high strength) and a substantially annular thick plate having a relatively large central circular hole 13 at the center thereof. Configured. Further, the upper and lower surfaces thereof have a substantially annular shape that is concentric with the sphere receiving groove portion 5 of the lower receiving plate 1 and the sphere receiving groove portion 7 of the upper receiving plate 3, and the bottom of the groove has an annular flat shape. A relatively narrow spherical body receiving groove 6 is formed.
The central circular hole 13 has an outer peripheral side surface of the central receiving plate 2 that is in contact with the rotating cup 10 and an inner peripheral side surface (of the spherical receiving groove portion 5) of the outer wall of the lower receiving plate 1. It is formed so as not to come into contact with the outer peripheral side surface). That is, the central receiving plate 2 is formed so as to be able to rotate smoothly in the annular direction. Moreover, the rotating cup 10 is formed so as to reduce the contact resistance with the inner peripheral side surface of the central circular hole 13 of the central receiving platen 2.
By the way, the spherical body receiving groove 6 may be formed to be slightly curved in the width direction. At this time, the curvature radius of the curved surface in the width direction of the sphere receiving groove portion 6 is set to be larger than the curvature radius of the sphere 4, and the contact point between the sphere 4 and the sphere receiving groove portion 6 is made small so that the sphere 4 itself The rolling wear resistance (or sliding friction resistance) should be small. In addition, during vibration (impact), the sphere 4 moves in a direction with less rolling frictional resistance (or sliding frictional resistance) (circumferential direction of the sphere receiving groove 6).

  The spherical body 4 is appropriately formed into a spherical shape with a metal material, for example, and is formed between the spherical body receiving groove portion 5 of the lower receiving plate 1 and the spherical receiving groove portion 6 of the central receiving plate 2 or the spherical receiving portion of the upper receiving plate 3. Between the groove part 7 and the spherical body receiving groove part 6 of the central part receiving disc 2, a plurality of them are arranged with a certain distance (see FIG. 4).

  By the way, when the seismic isolation device A configured as described above receives vibration, for example, the central receiving plate 2 moves in the direction of the vibration, and the inner peripheral side surface of the central circular hole 13 of the central receiving plate 2 is It contacts the central protrusion 8 (the rotating cup 10) (the outer peripheral side surface of the central receiving plate 2 does not contact the outer peripheral side surface of the spherical receiving groove 5 of the lower receiving plate 1). Then, the moving direction of the central portion receiving plate 2 in the direction of vibration depends on the direction of contact between the central protrusion 8 (rotating cup 10) and the inner peripheral side surface of the central circular hole 13 in either the left or right rotational direction. As a result, the center receiving plate 2 rotates horizontally (or rotates while the center moves with the central protrusion 8 as a fulcrum).

  7 to 9 is obtained by adding a holding plate 20, a holding frame 22, a spacer ring 23, and a surrounding body 25 to the above-described seismic isolation device A.

  The holding plate 20 is formed, for example, in a substantially disc shape by using an appropriate metal material, an appropriate composite material, or the like, and holding holes 21 for a plurality of spheres 4 are provided near the outer periphery thereof. That is, the holding plate 20 is arranged on each of the upper surface portion and the lower surface portion of the central receiving plate 2 so that the arrangement state of the spheres 4 can be reliably maintained by accommodating the plurality of spheres 4 in the holding holes 21. Formed.

  Further, the holding frame 22 is mounted so as to hold both the outer peripheral portion of the central receiving plate 2 and the outer peripheral portions of the pair of holding plates 20, for example, and the holding plate 20 is attached to the central receiving plate 2. In addition, it is provided so as to be rotatable with respect to the central receiving plate 2 without falling off.

  The spacer ring 23 is provided, for example, so that the space between the holding frame 22 and the upper and lower surfaces of the central receiving plate 2 can be maintained more than the thickness of the holding plate 20. The rotation is not prevented.

  The surrounding body 25 is formed, for example, in a substantially bellows-like shape using a material that can be appropriately expanded and contracted, and is formed so as to surround the lower receiving plate 1 and the upper receiving plate 3. That is, it is provided so that sand, dust or the like may enter between the lower receiving plate 1 and the upper receiving plate 3 and hinder the smooth rolling or the like of the sphere 4.

  By the way, the contact part of the spherical body receiving groove parts 5, 6, 7 and the spherical body 4 may be provided with an appropriate lubricant made of, for example, lubricating oil or grease. That is, the lubricant suppresses wear of the sphere 4 and improves its movement (the sphere 4 can roll and slide more smoothly). It will improve the anticorrosion.

Further, the seismic coupling device B shown in FIGS. 10 and 11 includes a pair of cylinders 30 and 31 formed so as to be extendable in a substantially horizontal direction, and a resilient spring built in the pair of cylinders 30 and 31. 35, a pair of link mounting plates 33, 34 attached to both end portions of the pair of cylinders 30, 31, a rod 32 penetrating them, and a mounting portion provided at the upper end portion of the pair of link mounting plates 33, 34 And the attachment ring 46 of the upper-side fixture B2 and a plurality of portions arranged so as to obliquely connect the attachment portions provided at the lower ends of the pair of link attachment plates 33 and 34 and the attachment ring 47 of the lower-side attachment B1. It consists of a connecting link 45.
And when the mutual space | interval of the attachment ring 46 of the upper side fixture B2 and the attachment ring 47 of the lower side fixture B1 becomes large, a mutual link of a pair of link attachment plates 33 and 34 via the connection link 45 is carried out. As the interval decreases, the elastic spring 35 is elastically compressed. Then, when the elastic force accumulated in the elastic spring 35 is released, the distance between the pair of link attachment plates 33 and 34 increases, and the attachment ring 46 and the attachment ring 47 are connected via the connection link 45. The distance between the lower side fixture B1 and the upper side fixture B2 is pulled back to a predetermined position.

  The pair of cylinders 30 and 31 is, for example, appropriately configured by a metal material (or may be an appropriate composite material having relatively high strength), and one cylinder 30 has a cylindrical shape with one end closed, and the other The cylinder 31 has a cylindrical shape with the other end closed, and one end of the cylinder 31 is slidably inserted into the one cylinder 30 so as to be extendable in the horizontal direction.

  The rod 32 is made of, for example, a metal bar as appropriate, and is disposed so as to penetrate the pair of cylinders 30 and 31, the link mounting plates 33 and 34, and the elastic spring 35. Male thread portions to which 36 and 37 can be screwed are provided.

  The pair of link mounting plates 33 and 34 is made of, for example, an appropriate metal material (or may be an appropriate composite material having relatively high strength), and one link mounting plate 33 has an insertion hole for the rod 32 at the center thereof. Are formed at the upper and lower end portions thereof, and attachment portions (attachment holes) of the connection link 45 are formed, and one end of one cylinder 30 is arranged on the alligator. The other link mounting plate 34 has an insertion hole for the rod 32 formed at the center thereof, and mounting portions (mounting holes) for the connection links 45 formed at upper and lower ends thereof. The edge is arranged on the alligator.

  The elastic spring 35 is formed, for example, in the shape of a coil spring and is accommodated in a pair of cylinders 30 and 31, and is compressed and stored when the pair of link mounting plates 33 and 34 approach each other. The pair of link attachment plates 33 and 34 (attachment ring 46 and attachment ring 47) act to return to the original distance by force.

  In the drawing, reference numeral 38 denotes a plurality of small balls interposed between the inner peripheral surface of one cylinder 30 and the outer peripheral surface of the other cylinder 31, and the balls 38 allow the pair of cylinders 30 and 31 to expand and contract. It is formed so as to be performed more smoothly.

  In the figure, for example, 39 is an elastic cover that is formed in an approximately bellows cylinder shape by an appropriate elastic material or the like. This elastic cover 39 prevents sand, dust, etc. from entering through the gap between one cylinder 30 and the other cylinder 31. One end is fixed to the other end portion of one cylinder 30 and the other end is fixed to the other end portion of the other cylinder 31.

  In the figure, for example, 40 is a cover case that has a substantially bottomed cylindrical shape and is fixed to one link mounting plate 33 (or the other link mounting plate 34 or a pair of link mounting plates 33, 34). The cover case 40 is configured so that even if the pair of link mounting plates 33 and 34 approach and the end of the rod 32 protrudes greatly from the link mounting plates 33 and 34, the cover case 40 can be accommodated. It is designed to improve safety and dustproofness.

  For example, the connecting link 45 is appropriately formed of a metal chain or the like so that the upper and lower mounting portions of the pair of link mounting plates 33 and 34 and the mounting rings 46 and 47 can be securely and firmly connected to each other. It is configured. In addition, as shown in the figure, it is formed so as to be able to smoothly convert the force in the vertical direction into the force in the horizontal direction (or vice versa).

  The attachment ring 46 is disposed at the lower end portion of the upper-side attachment tool B2, and the attachment ring 47 is disposed at the upper end portion of the lower-side attachment tool B1.

FIG. 12 shows a seismic coupling device B according to another embodiment. The seismic coupling device B includes a pair of cylinders 30 and 31 formed so as to be extendable in a substantially horizontal direction, and the pair of cylinders. 30 and 31, a resilient spring 35, a pair of link attachment plates 33 and 34 attached to both ends of the pair of cylinders 30 and 31, a pair of split rods 50 and 51, and a pair of link attachment plates The mounting portion provided at the upper end portions of 33 and 34 and the mounting ring 46 of the upper side mounting fixture B2, and the mounting portion provided at the lower end portions of the pair of link mounting plates 33 and 34 and the mounting ring 47 of the lower side mounting fixture B1 are provided. It consists of a plurality of connecting links 45 arranged so as to be connected to each other.
And when the mutual space | interval of the attachment ring 46 of upper side fixture B2 and the attachment ring 47 of lower side fixture B1 becomes large, while the mutual space | interval of a pair of link attachment plates 33 and 34 becomes small, The elastic spring 35 is elastically compressed, and the lower-side attachment tool B1 and the upper-side attachment tool B2 are pulled back to predetermined positions by the elastic force of the elastic spring 35.

The pair of split rods 50 and 51 is formed of, for example, a metal material as appropriate, and includes a screw rod portion having a leading end and spring receiving portions 52 and 53 having a base end.
One split rod 50 has a threaded rod passing through the bottom wall of one cylinder 30 and one link mounting plate 33, and one nut 36 is screwed into the other split rod 51. The threaded rod portion passes through the bottom wall portion of the other cylinder 31 and the other link mounting plate 34, and the other nut 37 is screwed.

  In the figure, for example, 54 is a cover that is formed in a substantially cylindrical shape with a resin material or the like as appropriate. This cover 54 prevents sand or dust from entering through the gap between one cylinder 30 and the other cylinder 31. And is screwed to the other end portion of one cylinder 30.

  Then, the lower side fixture B1 shown in FIGS. 13 and 14 includes a base 60 that is fixed to the ground side structure G by anchor bolts, a fixing plate 61 that is horizontally disposed above the base 60, and this A movable lower plate 62 that contacts the lower surface of the fixed plate 61 via a plurality of spheres 65, a movable upper plate 63 that contacts the upper surface of the fixed plate 61 via a plurality of balls 66, and an upper portion of the movable upper plate 63. An elastic cushion material 68, a presser plate 67 disposed above the elastic cushion material 68, a movable lower plate 62, a movable upper plate 63, an elastic cushion material 68, and a mounting rod 64 penetratingly attached to the presser plate 67. And an attachment ring 47 fixed to the upper end portion of the attachment rod 64. In addition, an insertion circular hole 71 is formed in the center of the fixed plate 61, and the mounting rod 64 inserted through the insertion circular hole 71 is configured to be movable in the horizontal direction within the insertion circular hole 71. Is.

  The base 60 is made of, for example, a metal material as appropriate, and includes a base portion fixed to the ground side structure G and a side wall portion standing on the upper surface of the base portion.

The fixed plate 61 is appropriately formed into a plate shape by a metal material or the like, and is arranged so as to be parallel to the base portion of the base 60 and is placed on the upper end portion of the side wall of the base 60. is there. Moreover, the fixed platen 61 is fixed to the base 60 via long bolts and nuts.
Further, a substantially narrow annular sphere receiving groove portion is formed on the lower surface of the fixed platen 61 near the insertion circular hole 71 so that the sphere 65 can roll.

The movable lower plate 62 is formed, for example, in a disk shape from metal material or the like as appropriate, and is disposed horizontally between the base portion of the base 60 and the fixed plate 61, and a nut 69 at the lower end portion of the mounting rod 64. It is fixed through.
Moreover, a substantially wide annular sphere receiving groove portion 70 is formed on the upper surface portion thereof, so that the sphere 65 can roll. The movable lower plate 62 is configured to move horizontally by the spherical body receiving groove portion 70, the insertion circular hole 71, and the plurality of spherical bodies 65.

The movable upper plate 63 is, for example, formed in a disk shape from a metal material or the like as appropriate. The movable upper plate 63 is in contact with the upper surface of the fixed plate 61 via a plurality of balls 66, and a mounting rod 64 is slidable in the central hole portion. Is inserted.
In addition, a substantially narrow annular sphere receiving groove portion is formed on the lower surface portion near the outer periphery, and the ball 66 is accommodated so that it can roll. Note that the movable upper plate 63 is configured to move horizontally by a plurality of balls 66.

The mounting rod 64 is formed, for example, in a substantially rod shape with a metal material or the like as appropriate, and is formed so as to penetrate the presser plate 67, the elastic cushion material 68, the movable upper plate 63, and the movable lower plate 62 from above. Has been. In addition, the movable lower plate 62 is fixed to the front end portion of the mounting rod 64 by a nut 69, and a presser plate 67 is fixed to the upper end of the mounting rod 64, and an elastic cushion disposed below the presser plate 67. The movable upper plate 63 is pressed downward by the material 68, and the fixed plate 61 can be pressed from above and below by the movable upper plate 63 and the movable lower plate 62.
An attachment ring 47 is screwed to the upper end portion of the attachment rod 64.

  The spherical body receiving groove portion 70 is formed in an inclined state such that the outer periphery thereof gradually decreases in the direction from the center toward the center, and the central portion of the movable lower plate 62 is the central portion of the plurality of spherical bodies 65. You may make it move to (the center part of the insertion circular hole 71) automatically.

  In the drawing, reference numeral 72 denotes a go cover that covers the space between the presser plate 67 and the fixed plate 61. The go cover 72 is provided so as to prevent sand, dust, and the like from adhering to the ball 66 and the sphere 65. is there.

  By the way, the specific configuration of the seismic system, the specific configuration of the seismic isolation device A, the shape, dimensions, materials, number, arrangement position, the specific configuration, shape, dimensions, material of the spacer block A1, the specifics of the lower receiving base 1 Configuration, shape, dimensions, material, specific configuration, shape, dimensions, material of the central receiver 2, specific configuration, shape, dimensions, material of the upper receiver 3, specific configuration, shape, dimensions of the sphere 4 , Material, number, arrangement position, specific configuration, shape and dimensions of spherical body receiving groove portion 5, specific configuration, shape and dimensions of spherical body receiving groove portion 6, specific configuration, shape, size, central protrusion of spherical body receiving groove portion 7 Specific configuration, shape and dimensions of the portion 8, specific configuration and dimensions of the internal thread portion 9, specific configuration of the rotating cup 10, shape, dimensions, material, specific configuration of the insertion hole 11, shape, dimensions and mounting Specific configuration, shape, dimensions, material of screw 12, specific configuration, shape of central circular hole 13, Method, specific configuration of holding plate 20, shape, dimensions, material, specific configuration of holding hole 21, shape, dimensions, number, arrangement position, specific configuration of holding frame 22, shape, size, material, spacer ring 23, specific configuration, shape, dimensions, material, specific configuration of enclosure 25, shape, dimensions, material, specific configuration of seismic coupling device B, shape, dimensions, material, specific configuration of lower side fixture B1 , Shape, dimensions, material, specific configuration of the upper fixture B2, shape, dimensions, material, specific configuration of the cylinders 30 and 31, shape, dimensions, material, specific configuration of the rod 32, shape, dimensions, material The specific configuration, shape, dimensions, and material of the link mounting plates 33, 34, the specific configuration, shape, dimensions, and material of the spring spring 35, the specific configuration of the nuts 36, 37, the shape, dimensions, material, and the ball 38 Specific configuration, shape, dimensions , Material, number, specific configuration of elastic cover 39, shape, dimensions, material, specific configuration of cover case 40, shape, dimensions, material, specific configuration of connecting link 45, shape, dimensions, material, mounting ring 46 Specific configuration, shape, dimensions, material, specific configuration of mounting ring 47, shape, dimensions, material, specific configuration of split rods 50, 51, shape, dimensions, material, specific of spring receiving portions 52, 53 Configuration, shape, dimensions, material, specific configuration of cover 54, shape, dimensions, material, specific configuration of base 60, shape, dimensions, material, specific configuration of fixed plate 61, shape, dimensions, material, movable under Specific configuration, shape, dimensions, material of panel 62, specific configuration, shape, dimensions, material of movable upper panel 63, specific configuration, shape, dimensions, material of mounting rod 64, specific configuration, shape of sphere 65 , Dimensions, material, number, presser plate 67 Specific configuration, shape, size, material, specific configuration of elastic cushion material 68, shape, size, material, specific configuration of nut 69, size, material, specific configuration of spherical body receiving groove portion 70, shape, size, Specific configuration, shape, dimensions of the insertion circular hole 71, specific configuration of the surrounding cover 72, shape, dimensions, material, specific configuration of the ground side structure G, shape, dimensions, specific configuration of the seismic structure H The shape, dimensions, etc. are not limited to those shown in the drawings, and can be freely set and changed as appropriate.

It is a partial front view which illustrates the seismic system for structures. It is a disassembled perspective view which illustrates a seismic isolation apparatus. It is a vertical front view which illustrates a seismic isolation apparatus. It is a cross-sectional top view which illustrates a seismic isolation apparatus. It is a vertical front view which illustrates the operating state of a seismic isolation device. It is a cross-sectional plan view which illustrates the operating state of a seismic isolation device. It is a disassembled perspective view which shows the other Example of a seismic isolation apparatus. It is a vertical front view which shows the other Example of a seismic isolation apparatus. It is a cross-sectional top view which shows the other Example of a seismic isolation apparatus. It is a partial notch front view which illustrates an earthquake-resistant coupling device. It is a side view which illustrates an earthquake-resistant coupling device. It is a partial notch front view which shows the other Example of an earthquake-resistant coupling device. It is a partially notched front view which illustrates a lower side fixture. It is a fragmentary sectional view of a lower part side fixture.

Explanation of symbols

A Seismic isolation device A1 Spacer block 1 Lower receiving plate 2 Center receiving plate 3 Upper receiving plate 4 Sphere 5 Sphere receiving groove 6 Sphere receiving groove 7 Sphere receiving groove 8 Central protrusion 9 Female screw 10 Rotating cup 11 Insertion hole 12 Mounting screw 13 Central circular hole 20 Holding plate 21 Holding hole 22 Holding frame 23 Spacer ring 25 Enclosure B Seismic coupling device B1 Lower side mounting tool B2 Upper side mounting tool 30 Cylinder 31 Cylinder 32 Rod 33 Link mounting plate 34 Link mounting plate 35 Elastic spring 36 Nut 37 Nut 38 Ball 39 Elastic cover 40 Cover case 45 Connecting link 46 Mounting ring 47 Mounting ring 50 Split rod 51 Split rod 52 Spring receiving portion 53 Spring receiving portion 54 Cover 60 Base 61 Fixed platen 62 Movable lower plate 63 Movable upper panel 64 Mounting rod 65 Ball 66 Ball 67 Presser plate 68 Elastic cushion material 69 Nut 70 Ball receiving groove 71 Insertion circular hole 72 Enclosure cover G Ground side structure H Earthquake resistant side structure

Claims (3)

A seismic system for a structure comprising a plurality of seismic isolation devices and seismic connection devices between a ground side structure and a seismic side structure, which are arranged at an appropriate interval. The seismic device is interposed between the lower receiving base fixed to the ground side structure by appropriate means, the upper receiving base fixed to the earthquake resistant side structure by appropriate means, and the lower receiving base and the upper receiving base. A central receiving plate, and a plurality of spheres interposed between the lower receiving plate and the central receiving plate and between the central receiving plate and the upper receiving plate, respectively. Forming a spherical receiving groove portion having a substantially annular shape and a groove bottom portion of which is a flat annular surface, forming a central protrusion at the center portion thereof, and presenting a substantially annular shape on the lower surface of the upper receiving plate; The groove bottom part forms a sphere receiving groove part with an annular flat surface, and the central part receiving plate has a central circular hole that can accommodate the central projection part. Are formed in the shape of a substantially planar annular thick plate, and each of the upper and lower surfaces thereof is formed with a spherical receiving groove portion having a substantially circular annular shape, and the plurality of spherical bodies are formed by the spherical receiving groove portion of the lower receiving plate and the central receiving plate. It is configured to be interposed between the sphere receiving groove portions and between the sphere receiving groove portion of the central receiving plate and the sphere receiving groove portion of the upper receiving plate, and the seismic coupling device is fixed to the ground side structure by appropriate means. Attached to the lower side fixture and the upper side fixture fixed to the seismic side structure by appropriate means. A seismic system for a structure, which is configured to act so as to return the fixture to a predetermined position. The seismic coupling device includes a pair of cylinders formed so as to be extendable in a substantially horizontal direction, a resilient spring housed in the pair of cylinders, and a pair of links attached to both ends of the pair of cylinders. A mounting plate, a mounting ring provided at the upper end portion of the pair of link mounting plates and a mounting ring of the upper side mounting tool, and a mounting portion provided at the lower end portion of the pair of link mounting plates and a mounting ring of the lower side mounting tool. A plurality of connecting links arranged so as to be connected to each other, and when the distance between the mounting ring of the upper side mounting tool and the mounting ring of the lower side mounting tool becomes large, the pair of link mounting plates 2. The seismic system for a structure according to claim 1, wherein the elastic spring is elastically compressed while the distance between the two is reduced. The lower side fixture includes a base fixed to the ground side structure by appropriate means, a fixed plate disposed on the upper portion of the base and having an insertion circular hole, and a plurality of spheres on the lower surface of the fixed plate. A movable lower plate contacting the upper surface of the fixed platen, a movable upper plate contacting the upper surface of the fixed platen via a plurality of balls, and a mounting rod that is inserted through the movable lower platen and the movable upper plate and is movable in the insertion circular hole. And a mounting ring fixed to an upper end portion of the mounting rod, and the mounting rod is configured to be movable in a horizontal direction within a predetermined range. Seismic system for structures.

Images