JP4878503B2 - Seismic isolation building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a base isolated building which is small in size, and has a structural skeleton thereof supported by a wooden stand easily assembled on a base isolation device. <P>SOLUTION: The stand 4 formed of a plurality of wooden horizontal members 41, 42 horizontally supported at almost the same height and combined with each other, is borne on a base isolation bearing device 10. The base isolation bearing device has a stand support member 16 on an upper portion thereof, and supports the horizontal members forming the stand, on an almost horizontal upper plane thereof. The horizontal members are connected together almost at right angles on the stand support member, and a joint portion between each horizontal member and the stand support member is fixed by a stand fixture 17. The stand fixture has a vertical portion 17a which is obtained by connecting metallic plates together almost at right angles as two vertical plates, and a horizontal portion 17b extended from a lower edge of the vertical portion. Then the vertical portion is abutted on corner side surfaces of glued lamination boards connected together, and then fastened to the same by screws. Further the horizontal portion is abutted on the upper surface of the stand support member and fastened to the same by a bolt. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a base-isolated building that allows relative displacement between the ground and a structural frame during an earthquake and reduces vibrations transmitted from the ground to the structural frame, and in particular, a small-scale building such as a detached house. It relates to seismic isolation buildings.

Buildings are required to have high safety against earthquakes, and many proposals have been made for seismic isolation structures not only for large-scale commercial buildings and apartment buildings but also for wooden and other detached houses.
In general, a small building such as a detached house supports a frame that is assembled horizontally on the foundation via a seismic isolation device, and allows the relative displacement between the ground and the frame by the seismic isolation device. . Then, the building is constructed by assembling the structural frame on this frame. As for the seismic isolation device, laminated rubber is often used in large-scale buildings, and the vibration transmitted to the structural frame due to deformation of the laminated rubber is reduced. However, in a small-scale building, if the weight of the entire building is small and the rigidity of the laminated rubber is large, the ground vibration may not be absorbed effectively. For this reason, many small-scale buildings employ a structure that supports the structural frame via a sphere, and a structure that supports the structural frame via a sliding bearing. In addition, there are some that use two supporters that move so as to roll on the rail, and set the moving directions at right angles to each other to ensure free relative displacement in the horizontal direction between the ground and the structural frame. .

  When the above-described support that allows relative displacement easily is used, as shown in Patent Document 1, in addition to the seismic isolation support device that mainly supports the load in the vertical direction, there is a gap between the ground and the structural frame. In many cases, a damping device that provides resistance to relative movement by using a base is used, or a restoration function that restores the positional relationship between both when a relative displacement occurs is incorporated in the seismic isolation bearing. In addition, a restoration device may be provided separately.

  On the other hand, as shown in Patent Document 2 or Patent Document 3, a pedestal supported via the seismic isolation device is often assembled in a frame shape with a steel mold material. A reinforced concrete structure is also conceivable. And the said seismic isolation bearing apparatus, a decompression | restoration apparatus, an attenuation | damping apparatus, etc. adhere to the lower surface of these mounts, and are supported on the foundation formed on the ground. When an earthquake occurs, the gantry is displaced horizontally with respect to the ground, and the horizontal force transmitted from the ground is alleviated, but there is a certain level of horizontality at the mounting part of the seismic isolation bearing device, restoring device, and damping device. A force acts, and a horizontal force is transmitted from these attachment parts to the gantry.

When the structural frame is a steel frame prefabricated structure or the like, a column can be erected on the steel frame and supported on the frame to form a floor set. When the structural frame has a wooden frame structure, a base made of wood is installed on the steel frame or the reinforced concrete frame, and the structural frame is constructed by supporting the column and the floor frame. Thereby, the conventional structure housing can be adopted as it is and it can be set as a seismic isolation structure.
JP 2005-30152 A JP-A-2005-207176 JP 2001-262864 A

  However, when a wooden base is placed on a steel or reinforced concrete base as described above, and a wooden base-isolated building is constructed on this base, the base and base are stacked one above the other. , It will be expensive. In order to solve such problems, it is conceivable to use wooden mounts, but in order to construct such wooden mounts, wooden members must be arranged on site and these must be firmly joined together. I must. The wooden member is a member having a slightly larger cross-sectional dimension so as to support the weight of the structural frame, and these are assembled on the seismic isolation bearing device and the restoring device. For this reason, the work of assembling the wooden frame on the seismic isolation device at the site requires a lot of labor.

  The present invention has been made in view of the circumstances as described above, and the purpose thereof is to easily assemble a wooden frame on the seismic isolation device, and the structural frame is firmly supported by the frame. To provide seismic isolation buildings.

In order to solve the above-mentioned problem, the invention according to claim 1 is a structure in which a plurality of wooden horizontal members are horizontally supported at substantially the same height, and these are combined in a frame shape; And a seismic isolation bearing device that allows relative displacement in the horizontal direction between the gantry and the ground, and a structural frame constructed on the gantry, The seismic isolation support device is provided on a gantry support member that supports the horizontal member on a substantially horizontal upper surface, and a lower end portion of the gantry support member that protrudes downward from the bottom surface of the horizontal member, And a spherical body receiving portion that transmits a vertical load to the ground via a rolling sphere, and the upper surface of the gantry support member has a length of one side larger than a dimension in the width direction of the horizontal member. It is almost rectangular,
A plurality of the horizontal members are joined at a substantially right angle on the gantry support member, and a metal plate has a vertical part that continuously forms a right angle to form two vertical surfaces, and a horizontal part that continues to the lower ends of the two vertical surfaces. A bolt that is provided at a corner portion formed by two vertical surfaces of the horizontal portion, with the vertical portion abutting and fixed to the side surface of each horizontal member to be joined. Bolts are inserted through holes and through holes provided at positions corresponding to the bolt holes of the gantry support member, the gantry support member and the horizontal portion of the gantry fixing bracket are tightened, and the gantry fixing bracket is interposed. Provided is a base-isolated building in which each horizontal member of the gantry is fixed to the gantry support member .

  In this base-isolated building, when a base supported by the base-isolated support device is formed, a wooden horizontal member may be placed on the base support member of the base-isolated support device provided at a predetermined position. it can. Then, by placing a plurality of horizontal members to be joined at substantially right angles at predetermined positions on the gantry support member and attaching the gantry fixing brackets, the horizontal members are joined together and firmly with the gantry support member. Fixed. Therefore, the wooden frame supported on the seismic isolation bearing device can be constructed by a simple operation on site. Moreover, since the horizontal member joined substantially perpendicularly is joined on the gantry support member of the seismic isolation bearing device, the vertical shearing force acting on the horizontal member can be reliably supported with a simple structure.

Pillars can be erected directly on this wooden base, and a floor set can be formed by supporting a wooden pull, etc., completely different from the structure using a wooden base on a cloth foundation Similarly, a structural housing can be constructed. Moreover, it is also possible to construct a structural frame by the two-by-four method or other various methods on this wooden frame.
The above-mentioned seismic isolation bearing device is, for example, a device that supports the gantry support member via a sphere capable of rolling, a device that can slide between the upper and lower parts of the device, the foundation side and the gantry side Rails that are perpendicular to each other and having a support that can slide or roll with respect to these rails can be used. Laminated rubber can also be used if a material, shape, structure, etc. that can be effectively deformed during an earthquake can be selected, and it is a bearing device that allows relative displacement in the horizontal direction between the ground side and the structural frame side. If there are various things, it can be used.

  The invention according to claim 2 is the base-isolated building according to claim 1, wherein the gantry fixing bracket has a plurality of vertical portions raised from one continuous horizontal portion, and the plurality of vertical portions Are fixed to a plurality of corner portions between a plurality of horizontal members to be joined to each other.

  A plurality of parts having two perpendicular surfaces perpendicular to the gantry fixing bracket are set up in advance on the horizontal part made of a single plate material, and a plurality of them are erected. On the horizontal part, it can be installed at a predetermined position by a simple operation. Thereby, the said vertical part is contact | abutted at the corner | angular part which the side surface of two horizontal members forms, and a horizontal material is mutually connected firmly by these vertical parts. Further, since the horizontal portion continuous with the vertical portion is fixed to the gantry support member with a bolt or the like, the joined horizontal member and the seismic isolation support device are firmly fixed.

  A third aspect of the present invention is the first or second aspect, wherein the gantry fixing bracket is fixed to the horizontal member with screws or nails.

By fixing the gantry fixing bracket to the side surface of the horizontal member with screws or nails, it is not necessary to pre-process the joint portion of the horizontal member in advance, and it can be easily joined on site.
The screw or nail includes a lag screw having a spiral groove formed in the shaft portion of the nail, and includes various members that can be easily screwed or driven into wood.

The invention according to claim 4 is a structure in which a plurality of wooden horizontal members are horizontally supported at substantially the same height, these are combined in a frame shape, and the frame is supported on the ground. Seismic isolation device that allows horizontal displacement relative to the ground, and the upper end of the elastically deformable member is fixed to the frame, and the lower end is fixed to the foundation fixedly supported on the ground A base-isolated building having a position restoration device and a structural frame constructed on the gantry, wherein the position restoration device is an upper part on which the horizontal member is fixed on a substantially horizontal upper surface. A fixing member, and the upper surface of the upper fixing member has a rectangular shape whose one side is longer than the dimension in the width direction of the horizontal member, and the plurality of horizontal members are substantially on the upper fixing member. Joined at right angles, the metal plates form two vertical planes that are almost perpendicular to each other. A vertical portion, the gantry fixing bracket and a horizontal portion continuous with the lower end of the two vertical planes, the vertical portion while being secured in contact with the side surface of each of the horizontal members to be joined, the horizontal portion Is abutted and fixed to the upper surface of the upper fixing member, and is provided at a position corresponding to the bolt hole of the upper fixing member and a bolt hole provided at a corner formed by two vertical surfaces of the horizontal portion. Bolts are inserted through the provided through holes, the upper fixing member and the horizontal portion of the gantry fixing bracket are tightened, and the horizontal members of the gantry are fixed to the upper fixing member via the gantry fixing bracket. It is intended to provide seismic isolation buildings.

In addition to the seismic isolation bearing device, this seismic isolation building has a position restoration device that applies a force to restore the original position when a relative displacement occurs between the gantry and the ground. The position restoring device includes an upper fixing member whose upper surface is substantially horizontal. On the upper surface of the upper fixing member, a plurality of horizontal members can be placed at predetermined positions when assembling the gantry, similarly to the gantry support member of the seismic isolation support device. In this state, using the gantry fixing bracket, it is possible to join a plurality of horizontal members arranged substantially at right angles to each other and to firmly bond the horizontal member and the upper fixing member. Therefore, the restoring force by the position restoring device is reliably transmitted to the gantry via the upper fixing member and the gantry fixing bracket.
As the position restoring device, for example, a device having an upper fixing member fixed to the upper end portion of the laminated rubber and a member for fixing to the foundation at the lower portion can be used. Alternatively, a restoring force may be applied using a spring.

  The invention according to claim 5 is the seismic isolation building according to claim 4, wherein the position restoring device is connected to a foundation having one end connected to the upper fixing member and the other end fixedly supported on the ground. It is assumed that the displacement limiting member is adjusted in length so as to constrain the relative displacement in the horizontal direction generated between the gantry and the ground to a predetermined value or less. .

  In this base-isolated building, a relative displacement occurs between the gantry and the ground during the earthquake, and when the displacement reaches a predetermined limit value, the displacement limiting member restrains the relative displacement from increasing further. To do. Thereby, it is possible to prevent the displacement amount of the gantry and the structural frame from being excessive, and it is possible to prevent damage to the seismic isolation bearing device and the like. Also, when the relative displacement is constrained by the displacement limiting member, a large horizontal force acts on the upper fixing member, and this horizontal force is applied to the portion where the horizontal member constituting the gantry is joined at a substantially right angle. It is transmitted via the gantry fixing bracket. Further, the horizontal members to be joined are firmly joined to each other by the gantry fixing bracket, and the restraining force by the displacement limiting member is smoothly transmitted to the whole gantry and the structural frame.

The invention according to claim 6 is a structure in which a plurality of wooden horizontal members are horizontally supported at substantially the same height, and these are combined in a frame shape, and the frame is supported on the ground, A seismic isolation bearing device that allows relative displacement in the horizontal direction with the ground, and one end coupled to the platform and the other end coupled to a foundation fixedly supported on the ground, relative to the horizontal direction. A base-isolated building comprising: a damping device that applies a resistance force between the gantry to be displaced and the foundation; and a structural housing constructed on the gantry, wherein the damping device is substantially horizontal. An upper coupling member to which the horizontal member is fixed on the upper surface, and the upper surface of the upper coupling member has a rectangular shape whose one side length is larger than the dimension in the width direction of the horizontal member, The plurality of horizontal members are joined at a substantially right angle on the upper coupling member, and the metal plate is A vertical portion which crucible successively at right angles to form two vertical surfaces, gantry fixing bracket and a horizontal portion continuous with the lower end of the two vertical planes, the vertical to the side of each horizontal member to be bonded A bolt hole provided at a corner formed by two vertical surfaces of the horizontal part, and a through hole provided at a position corresponding to the bolt hole of the upper coupling member. A base-isolated building in which a bolt is inserted, the upper coupling member and the horizontal portion of the gantry fixing bracket are tightened, and the horizontal members of the gantry are fixed to the upper coupling member via the gantry fixing bracket . Is to provide.

In addition to the seismic isolation bearing device, the seismic isolation building has a damping device that applies resistance to the relative displacement between the gantry and the ground and attenuates vibrations transmitted to the gantry. When an earthquake motion occurs, the resistance force applied by the damping device is transmitted to the gantry via the upper coupling member that is fixed in contact with the bottom surface of the horizontal member. The upper coupling member is coupled to the gantry by a gantry fixing bracket similar to the seismic isolation bearing device and the position restoring device, and a plurality of horizontal members constituting the gantry are joined to each other by the same gantry coupling bracket, and the resistance force is It is reliably transmitted to a wide range of the gantry via the gantry fixing bracket.
Note that the damping device described above applies resistance to relative displacement using a viscous fluid such as an oil damper, uses a solid material that causes plastic deformation, and applies resistance to relative displacement by frictional resistance. Various things, such as what to do, can be adopted.

  As described above, in the base-isolated building of the present invention, the wooden frame can be easily assembled on the base-isolated bearing device, and the structural frame can be constructed thereon. In the event of an earthquake, relative displacement is allowed between the gantry and the ground, and the horizontal force acting on the gantry is transmitted to the gantry via the gantry fixing bracket.

Hereinafter, embodiments of the invention according to the present application will be described with reference to the drawings.
FIG. 1 is a schematic elevation view of a seismic isolation building which is an embodiment of the present invention.
In this seismic isolation building, a gantry 4 is supported on a foundation 2 formed on the ground 1 via a seismic isolation device 3, and an upper structure 5 is constructed thereon. The seismic isolation device 3 includes the seismic isolation support device 10, the position restoring device 20, and the attenuation device 30, and a plurality of each is used and arranged at appropriate positions on the plane.

  The foundation 2 is a floor slab made of reinforced concrete formed on the ground, and depending on the state of the ground, a pile may be driven in and supported on it.

  The gantry 4 is formed using a laminated material in which wood is laminated, and a plurality of laminated materials are arranged in two horizontal directions perpendicular to each other so as to form a substantially lattice-shaped frame. It is what was done. The structure for joining the laminated materials to each other and the structure for joining the seismic isolation device will be described later.

  As the upper structure 5, a shaft structure generally used in a wooden building has been adopted, and a structural frame is constructed by standing columns on the mount 4. Further, the floor assembly is also formed by pulling and supporting joists etc. on the gantry 4.

  As shown in FIG. 2, the seismic isolation bearing device 10 forms a mortar layer 11 on the foundation concrete 2, and is installed on the mortar layer 11. The steel plate 12 laid on the mortar layer 11, and this A sphere 13 that can be rolled up, and a sphere receiving portion 14 that is provided above the sphere 13 and that secures rotation of the sphere 13 and transmits a vertical load to the foundation 2 via the sphere 13. A cover plate 15 that covers the steel plate 12 on which the sphere 13 rolls, and a gantry support member 16 that is interposed between the sphere receiver 14 and the gantry 4 and supports the gantry 4 on the sphere receiver 14. The main part is formed.

  The steel plate 12 is laid on the mortar layer 11 so that the upper surface is accurately horizontal, and is provided in a range where the sphere 13 rolls due to earthquake motion. A rubber material 18 is attached in the vicinity of the periphery so as to surround the periphery, and the top of the rubber material 18 is in contact with the lower surface of the cover plate 15. This prevents sand and dust from entering between the cover plate 15 and the steel plate 12, that is, the rolling range of the sphere 13 without restricting the movement of the cover plate 15 together with the sphere receiving portion 14. Yes.

  The sphere 13 is made of steel and has sufficient strength and rigidity to support the vertical load from the gantry 4. The sphere receiving portion 16 provided on the sphere 13 is supported via a plurality of small spheres (not shown) so as to support a load in the vertical direction and ensure free rotation of the sphere 13. Yes. Thereby, the upper part of the seismic isolation bearing device 10 is allowed to move in the horizontal direction with respect to the foundation 2.

  The gantry support member 16 is made of steel, and is fixed to the spherical body receiving portion 14, and the upper surface is a horizontal surface. The gantry 4 made of the laminated members 41 and 42 is placed on the upper surface, and the gantry support member 16 and the gantry 4 are coupled by the gantry fixing bracket 17.

  The gantry fixing bracket 17 is formed of a steel plate material, and as shown in FIG. 3, a vertical portion 17 a having two vertical surfaces that are perpendicular to each other and a horizontal portion that is continuous at the lower edge thereof. Part 17b. As shown in FIG. 4, the gantry fixing bracket 17 is attached to each of four corners formed by the side surfaces of three laminated members 41, 42, and 43 that are joined at right angles. Then, the two vertical surfaces of each gantry fixing bracket 17 are in contact with the side surfaces of the two laminated members to be joined, and are fixed by screws 51. The horizontal portion 17 b is brought into contact with the upper surface of the gantry support member 16 and is fixed by a bolt 52.

  The gantry fixing bracket 17 has independent parts attached to the corner portions, but other gantry fixing bracket 19 in which these are integrated as shown in FIG. 5 can also be used. The gantry fixing bracket 19 has four vertical portions 19a erected on one continuous horizontal portion 19b. Even if such a gantry fixing bracket 19 is used, it is possible to similarly bond the laminated materials to each other and easily fix them to the gantry support member of the seismic isolation bearing device.

  FIG. 6 is a schematic elevation view showing the position restoring device 20 and a structure for attaching the position restoring device 20 to the gantry 4. This position restoration device 20 is made of a restoration member 23 made of an elastic material such as rubber, a lower fixing member 22 made of a steel plate joined to the lower surface of the restoration member 23, and a steel made fixed to the upper surface of the restoration member 23. The upper fixing member 24 constitutes the main part. The lower fixing member 22 is firmly fixed to the foundation concrete 2 via the mortar layer 21 with anchor bolts 26. The upper fixing member 24 is fixed to the lower side of the portion where the three laminated members of the gantry 4 are joined, using the gantry fixing bracket 25, similarly to the seismic isolation bearing device 10. Therefore, when a relative displacement in the horizontal direction occurs between the foundation and the gantry, the restoring member 23 undergoes elastic shear deformation between the upper fixing member 24 and the lower fixing member 22. And the restoring force accompanying this elastic deformation acts so as to return the relative displacement between the gantry 4 and the foundation 2 to the original position.

  As shown in FIG. 7, a displacement limiting member 27 can be attached to the position restoring device 20. The displacement limiting member 27 is made of a wire, and both ends thereof are connected to the upper fixing member 24 and the lower fixing member 22, respectively. In other words, anchor bolts 28 for attaching the lower fixing member 22 and bolts 29 for connecting the upper fixing member 24 and the gantry fixing bracket 25 are each provided with a ring-shaped connecting portion at the head, and this connecting portion is used. Both ends of the wire are connected to each other. The length of this wire is determined so as to correspond to the allowable value of relative displacement between the gantry 4 and the foundation 2, and is set so that the relative displacement amount does not exceed the allowable value.

  FIG. 8 is a schematic elevation view showing the damping device 30 and a structure for attaching the damping device 30 to the gantry 4. The damping device 30 includes an upper coupling member 31 that is attached to the lower surface of the gantry 4 and a lower coupling member 32 that is fixed on the foundation at a predetermined distance in the horizontal direction from the position where the upper coupling member 31 is attached. The oil damper 34 inserted between the upper coupling member 31 and the lower coupling member 32 constitutes a main part.

The upper coupling member 31 has a horizontal surface on the upper surface, and this surface is fixed in contact with the lower surface of the gantry 4. The position where the upper coupling member 31 is fixed is on the lower side of the portion where the three laminated members are joined as in the case of the seismic isolation bearing device 10 and the position restoring device 20. It is fixed to the frame using a gantry fixing bracket 37. On the other hand, the lower coupling member 32 is fixed to the concrete of the foundation 2 with anchor bolts 33. The oil damper 34 accommodates a viscous fluid in a cylindrical cylinder and provides viscous resistance when the attachment rods 35 and 36 on both sides expand and contract. The mounting rods 35 and 36 on both sides are coupled to both the upper coupling member 31 and the lower coupling member 32 so as to be horizontally rotatable.
A plurality of such attenuating devices 30 are used, and the damping devices 30 are arranged so that two are arranged in two directions in which the axis of the oil damper 34 is substantially perpendicular. Therefore, even if the relative displacement between the gantry 4 and the foundation 2 occurs in any direction, a viscous resistance is given to the relative displacement caused by the vibration.

  In such a base-isolated building, relative displacement in the horizontal direction is allowed between the foundation 2 and the gantry 4 that supports the structural frame during an earthquake, and the seismic motion transmitted from the ground to the structural frame can be reduced. it can. Further, the horizontal force that acts on the gantry 4 from the seismic isolation bearing device 10, the position restoring device 20, or the damping device 30 when seismic motion is applied is transmitted via the gantry fixing brackets 17, 25, and 37. On the other hand, when assembling the base 4 of the base-isolated building, the laminated material constituting the base 4 is bridged horizontally on the base-isolated bearing device 10 or the position restoring device 20 installed at a predetermined position. The seismic isolation bearing device 10 or the position restoring device 20 and the laminated material can be joined to each other by using the fixing brackets 17 and 25, and the laminated material joined at a right angle can be joined by a simple operation on the site. .

  In the above-described embodiment, the position where the damping device 30 and the position restoring device 20 are provided is a portion where the laminated material of the gantry 4 is joined from four directions, but other positions, for example, the length of one laminated material You may provide in the intermediate part of a horizontal direction. Further, a part of the seismic isolation bearing device provided with a plurality can also be provided in the middle part of the length direction of one laminated material or a part where the laminated material extending in three directions is joined.

It is a schematic elevation view of the seismic isolation building which is one embodiment of the present invention. FIG. 2 is a schematic elevation view showing a seismic isolation bearing device used in the base isolation building shown in FIG. 1 and a structure for attaching the seismic isolation bearing device to a gantry. It is a schematic perspective view of the part which attaches the seismic isolation bearing apparatus shown in FIG. 2 to a mount, and a mount fixing bracket. It is a schematic plan view of the part which attaches the seismic isolation bearing apparatus shown in FIG. 2 to a mount frame. It is a schematic plan view which shows the other example of the base fixing bracket which attaches the seismic isolation bearing apparatus shown in FIG. 2 to a base. FIG. 2 is a schematic elevation view showing a position restoring device used in the base-isolated building shown in FIG. 1 and a structure for attaching the position restoring device to a gantry. It is a schematic elevation view which shows an example of the position restoration apparatus which has a displacement limiting member. FIG. 2 is a schematic elevation view showing a damping device used in the base-isolated building shown in FIG. 1 and a structure for attaching the damping device to a gantry.

Explanation of symbols

1: ground, 2: foundation, 3: base isolation device, 4: mount, 5: superstructure of building 10: base isolation device, 11: mortar layer, 12: steel plate, 13: sphere, 14: sphere receiving part 15: Cover plate, 16: Mount support bracket, 17: Mount fixing bracket, 17a: Vertical portion of mount fixing bracket, 17b: Horizontal portion of mount fixing bracket, 18: Rubber material, 19: Mount fixing bracket,
20: Position restoring device, 21: Mortar layer, 22: Lower fixing member, 23: Restoring member, 24: Upper fixing member, 25: Mounting bracket, 26: Anchor bolt,
30: Damping device, 31: Upper coupling member, 32: Lower coupling member, 33: Anchor bolt, 34: Oil damper, 35, 36: Mounting rod, 37: Mounting bracket,
41, 42, 43, 44, 45, 46, 47: Glulam (wood),
51: Screw, 52: Bolt:

Claims (6)

A plurality of horizontal wooden supports are supported horizontally at approximately the same height, and these are combined in a frame shape,
A seismic isolation bearing device that supports the gantry on the ground and allows relative displacement in the horizontal direction between the gantry and the ground;
A seismic isolation building having a structural housing constructed on the mount,
The seismic isolation support device is provided on a gantry support member that supports the horizontal member on a substantially horizontal upper surface, and a lower end portion of the gantry support member that protrudes downward from the bottom surface of the horizontal member, A sphere receiving portion that transmits a vertical load to the ground via a rolling sphere,
The top surface of the gantry support member has a substantially rectangular shape with one side length larger than the dimension in the width direction of the horizontal member,
A plurality of the horizontal members are joined at a substantially right angle on the gantry support member,
Side surfaces of each horizontal member to which a mounting bracket having a vertical portion in which a metal plate is formed substantially continuously at a right angle to form two vertical surfaces, and a horizontal portion continuous with the lower ends of the two vertical surfaces is joined. The vertical part is abutted and fixed to
Bolts are inserted into bolt holes provided at corners formed by two vertical surfaces of the horizontal part and through holes provided at positions corresponding to the bolt holes of the gantry support member to support the gantry. A base-isolated building in which a member and a horizontal portion of the gantry fixing bracket are tightened, and each horizontal member of the gantry is fixed to the gantry support member via the gantry fixing bracket . The gantry fixing bracket has a plurality of vertical portions raised from a continuous horizontal portion,
The seismic isolation building according to claim 1, wherein the plurality of vertical portions are respectively fixed to a plurality of corner portions between a plurality of horizontal members joined to each other.   The base-isolated building according to claim 1 or 2, wherein the gantry fixing bracket is fixed to the horizontal member by a screw or a nail. A plurality of horizontal wooden supports are supported horizontally at approximately the same height, and these are combined in a frame shape,
A seismic isolation bearing device that supports the gantry on the ground and allows relative displacement in the horizontal direction between the gantry and the ground;
A position restoring device in which the upper end of the elastically deforming member is fixed to the frame and the lower end is fixed to a foundation fixedly supported on the ground;
A seismic isolation building having a structural housing constructed on the mount,
The position restoring device has an upper fixing member to which the horizontal member is fixed on a substantially horizontal upper surface ,
The upper surface of the upper fixing member has a rectangular shape in which the length of one side is larger than the dimension in the width direction of the horizontal member,
A plurality of the horizontal members are joined at a substantially right angle on the upper fixing member;
Side surfaces of each horizontal member to which a mounting bracket having a vertical portion in which a metal plate is formed substantially continuously at a right angle to form two vertical surfaces, and a horizontal portion continuous with the lower ends of the two vertical surfaces is joined. The vertical part is abutted and fixed to
A bolt is inserted into a bolt hole provided in a corner formed by two vertical surfaces of the horizontal part and a through hole provided in a position corresponding to the bolt hole of the upper fixing member, and the upper fixing is performed. A base-isolated building in which a member and a horizontal portion of the gantry fixing bracket are tightened, and each horizontal member of the gantry is fixed to the upper fixing member via the gantry fixing bracket . The position restoring device has a displacement limiting member connected to a foundation having one end connected to the upper fixing member and the other end fixedly supported on the ground.
5. The length of the displacement limiting member is adjusted so as to constrain a horizontal relative displacement generated between the gantry and the ground to a predetermined value or less. Seismic isolated building. A plurality of horizontal wooden supports are supported horizontally at approximately the same height, and these are combined in a frame shape,
A seismic isolation bearing device that supports the gantry on the ground and allows relative displacement in the horizontal direction between the gantry and the ground;
One end is coupled to the gantry, the other end is coupled to a foundation fixedly supported on the ground, and a damping device that imparts a resistance force between the gantry and the foundation that are relatively displaced in the horizontal direction;
A base-isolated building having a structural frame constructed on the frame,
The attenuation device has an upper coupling member to which the horizontal member is fixed on a substantially horizontal upper surface,
The upper surface of the upper coupling member has a rectangular shape whose one side is longer than the dimension in the width direction of the horizontal member,
The plurality of horizontal members are joined at a substantially right angle on the upper coupling member,
Side surfaces of each horizontal member to which a mounting bracket having a vertical portion in which a metal plate is formed substantially continuously at a right angle to form two vertical surfaces , and a horizontal portion continuous with the lower ends of the two vertical surfaces is joined. The vertical part is abutted and fixed to
A bolt is inserted into a bolt hole provided in a corner formed by two vertical surfaces of the horizontal part and a through hole provided in a position corresponding to the bolt hole of the upper coupling member, and the upper coupling A base-isolated building in which a member and a horizontal portion of the gantry fixing bracket are tightened, and each horizontal member of the gantry is fixed to the upper coupling member via the gantry fixing bracket .

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