JP3095272B2 - Seismic isolation floor members - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a type of floor member which comprises a plurality of floors which are successively arranged on a floor base, and thereafter or in advance, various decorative materials are arranged thereon to form a floor. The present invention relates to a seismic isolation floor member capable of attenuating an earthquake or other vibration or swing.

[0002]

2. Description of the Related Art Conventionally, the most basic seismic isolation means has a structure in which legs are formed below members constituting a floor, and rubbers are attached to lower ends of these legs. In addition, a ball may be arranged between the member constituting the floor and the ground side to block the vibration of the ground side with the ball, or the member constituting the floor and the ground side may be joined with a smooth surface, Similarly, there has been known a configuration in which the upper and lower portions are shut off with respect to vibration, and members constituting the floor are pulled from all sides by coil springs or the like so that the members constituting the moved floor can return to their original positions.

[0003]

Conventionally, the most basic seismic isolation means merely attaches rubbers to the lower ends of the legs for supporting the plate material, as described above. It does not provide a satisfactory seismic isolation effect.
The latter does not relate to individual floor members,
It was considered for the whole building at once. The present invention provides a floor member having a high level of seismic isolation, particularly for horizontal vibration or swing, which is a floor member constituting a floor of a building by laying or affixing a decorative material on the upper surface. The purpose is to do.

[0004]

The gist of the present invention resides in that a concave portion having a circular shape as viewed from above is formed in the center of a base member, and a plurality of concentric corrugated portions having different diameters are formed in the concave portion. And a liquid filled in a buffer space formed between the circular cover body and the concave portion, and a mounting member formed on the upper periphery of the concave portion of the base member. A substrate member is slidably mounted on a surface, and near the center of the concave portion of the base member,
The lower end of the coupling shaft is coupled to each other so as to be movable in the horizontal direction within a certain range, and the middle of the circular cover body is penetrated while maintaining watertightness in the middle of the coupling shaft. A seismic isolation floor member in which a lower portion of the substrate member and an upper end of the connection shaft are connected so as to be movable in a horizontal direction within a certain range.

The connection between the vicinity of the center of the concave portion and the lower end of the connecting shaft may have various concrete configurations having the same function. For example, a connecting disk may be provided at the lower end of the connecting shaft. On the other hand, a small concave portion is formed at the center of the bottom of the concave portion, and a coupling lid plate is fixed to the small concave portion so as to form an auxiliary buffer space between the small concave portion and the bottom portion. A circular through-hole is formed so that the coupling shaft penetrating therethrough is movable in a predetermined range in the radial direction, and the lower end of the coupling shaft is further inserted from the through-hole into the auxiliary buffer space. It is appropriate that the coupling disk is configured to be freely movable in the horizontal direction in the auxiliary buffer space. In the through hole, at least, the coupling disk relatively horizontally moves in the auxiliary buffer space, and a peripheral end thereof abuts on a peripheral side of the auxiliary buffer space, that is, an inner periphery of the small recess. Until then, it is appropriate that the diameter of the connecting shaft is such that the circumferential side of the connecting shaft does not contact the inner circumference. It is also appropriate that this substantially coincides with the limit of the eccentric deformation of the circular cover body.

There may be various concrete configurations having the same function for coupling the lower part of the substrate member and the upper end of the coupling shaft. For example, a coupling disk is attached to the upper end of the coupling shaft. On the other hand, a ring member having a bottom plate is attached to the center of the lower surface of the substrate member, and a circular through hole is formed in the center of the bottom plate so that the coupling shaft penetrating therethrough is movable in a certain range in the radial direction. The upper end of the coupling shaft is inserted from the through hole into an auxiliary buffer space formed between the ring member and the lower portion of the substrate member, and the coupling disk at the upper end is inserted into the auxiliary buffer space. It is appropriate to configure by positioning the camera so as to be movable in the horizontal direction. As in the case of the lower auxiliary buffer space described above, at least the connecting disk relatively moves in the auxiliary buffer space in the horizontal direction, and the peripheral end of the through hole has the peripheral buffer space. It is appropriate that the diameter of the connecting shaft is such that the circumferential side of the coupling shaft does not abut against the inner circumference until it comes into contact with the inner circumference of the ring member.

Further, the connection between the vicinity of the center of the concave portion of the base member and the lower end of the connection shaft and the connection between the lower portion of the substrate member and the upper end of the connection shaft are configured as described above. In order to reduce the impact when the outer periphery of the ring member collides with the inner periphery of the recess, an elastic member is suitably provided on the outer periphery of the ring member.

The base member may have any shape when viewed from the plane, but it is appropriate to form the base member into a generally quadrilateral shape. The diameter of the concave portion is preferably determined in consideration of how much relative amplitude in the horizontal direction between the base member and the substrate member can be tolerated in an earthquake or the like. Preferably, when the base member and the substrate member make a relative horizontal swinging motion in the expected maximum earthquake, the side portion of the elastic member arranged on the outer periphery of the ring member is recessed. It is good to set it to such a degree that it does not easily come into contact with the inner circumference of the. It is preferable that an elastic leg is provided below the base member so as to be prepared for a direct type earthquake.

Further, as described above, the circular cover body has
Although it is constituted by a plurality of concentric wavy portions, a central portion constitutes a cross-shaped cross portion viewed from the lower surface, and further comprises a cylindrical portion passing through the coupling shaft at the center thereof, The outer end is preferably connected to the innermost wavy portion. In this case, the upper end of the cross portion is configured to form a circular sheet portion which is connected to the whole and viewed from a plane, and the outer peripheral end is connected to the innermost wavy portion. As the liquid, water or suitable oils that do not easily burn can be used. This is 100% in the buffer space
It may be filled, but may be filled with a slight gap left.
In the event of an earthquake, the base member vibrates back and forth and right and left along with the vibration of the ground. At this time, as will be described later, the vibration of the coupling shaft relative to the front and rear and right and left causes the buffer space to vibrate. The purpose of this is that the center of the liquid crystal becomes eccentric, and the flow of the liquid at that time causes resistance.

[0010] The base member is suitable for affixing a decorative material of the same size on its upper surface or laying a decorative material on its upper surface after the seismic isolation floor member is installed. For example, it can be constituted by plastic or a wooden plate. It is appropriate that the plane shape is a square when viewed from the plane for the purpose of use. It is appropriate that the lower surface of the substrate member is configured to be smooth. When the substrate member is directly mounted on the mounting surface of the base member, it is appropriate that the mounting surface is also configured to be smooth and to be able to slide smoothly with low resistance. For example, the lower surface and the mounting surface of the substrate member are formed to be smooth by applying a coating of tetrafluoroethylene resin. Alternatively, a large number of balls may be rotatably disposed on the mounting surface, and the substrate member may be mounted thereon.

[0011]

According to the present invention, as described above, in various types of buildings, a plurality of such units are arranged continuously on a floor base.
The floor can be easily formed by arranging the decorative material on the upper surface of the substrate member afterwards or in advance, and the floor efficiently attenuates vibrations or swings such as earthquakes transmitted to the floor substrate. It can be done. This seismic isolation floor member constitutes a flat floor substrate in a required area, and these are continuously arranged on the floor substrate, and a decorative material is pasted or laid on the upper surface thereof, or the upper surface is preliminarily formed on the upper surface. If the decorative material is attached and placed, the floor of the building can be easily configured. A slight gap is provided at the outer edge of the installation area of the seismic isolation floor member, that is, at a position adjacent to a wall surface or the like, and, for example, a cushion member is provided in the gap. Alternatively, in the event of an earthquake or the like, it is appropriate that an auxiliary plate body that can advance and retreat under the base member of the base-isolated floor member and the outer edge of the decorative material is disposed adjacent to the wall surface or the like. It is. Thus, according to the seismic isolation floor member of the present invention,
The base-isolated floor can be configured very easily at the required position.If the floor is constructed with the base-isolated floor members in this way, even if vibrations are transmitted to the floor base due to an earthquake or the like, the emergency The seismic isolation function can be performed efficiently.

In the event of an earthquake, if the horizontal sway is the main sway, the base member also sways in accordance with the sway of the ground floor, and the connecting shaft penetrates the central cylindrical portion of the circular cover body. Will swing in a similar manner. At this time, first, when the swing is small and the upper end of the coupling shaft does not move beyond a predetermined range due to the above-mentioned swing, that is, in the case of a configuration in which the coupling disk is attached thereto, the peripheral end is the upper end. The substrate member can be maintained in a substantially stationary state before it comes into contact with the inner periphery of the auxiliary buffer space, that is, the inner periphery of the ring member. That is, the seismic isolation function can be performed almost completely. When the swing increases and the upper end of the coupling shaft moves to reach the limit of the predetermined range, that is, when the peripheral end of the coupling disk comes into contact with the inner periphery of the ring member. By the action of the liquid filled in the buffer space and the circular cover, the vibration transmitted to the base member is transmitted to the substrate member while being attenuated via the coupling shaft.

In other words, the connecting shaft is connected to the base member via the circular cover with respect to the horizontal swing, and no special load is applied to the connecting shaft. In a state in which the peripheral end of the coupling disc at the upper end is not brought into contact with the inner periphery of the ring member, the circular cover is almost stationary even if there is a slight influence due to the state of movement of the liquid in the buffer space. It retains the same shape as the state, that is, the non-eccentric state where the cylindrical portion is located at the center thereof, and transmits the vibration of the base member to the coupling shaft almost as it is.

A state in which a load is applied to the coupling shaft, that is,
In a state where the peripheral end of the coupling disk at the upper end comes into contact with the inner periphery of the ring member, a load generated through the ring member in relation to the board member itself and furniture and other weights placed thereon is generated. The load is applied to the coupling shaft, and the load is applied to the circular cover through the coupling shaft, and the direction is opposite to the vibration direction of the base member, so that the circular cover has to be deformed to an eccentric state. . At this time, the segmented space formed by the crests of the wavy portions of the circular cover body is reduced on the side closer to the center, and will be expanded on the opposite side, but within the buffer space. The filled liquid becomes the resistance, and the eccentric deformation is in a state proportional to the load applied to the substrate member.

However, if the shaking is small, the base is almost completely seismically isolated, and the board member hardly shakes. Even if the shaking increases, the eccentric deformation of the circular cover attenuates the vibration and causes slight vibration. Only to the substrate member. In particular, when the load applied to the substrate member is large, the eccentric deformation of the circular cover body increases and the degree of attenuation of the vibration increases (the lower surface of the substrate member and the mounting surface of the base member are sufficiently smooth, It is assumed that both have means that can slide freely with low resistance). In addition, for example, in a base-isolated floor member constituting a floor of a room, adjacent substrate members abut against each other at a side portion, so that a load applied to the floor member is equal to that of the whole room. You will think about it.

In the case where the swinging is further increased and the configuration using the ring member as described above is employed, if the eccentric deformation of the circular cover body increases, the outer periphery of the ring member collides with the inner periphery of the concave portion of the base member. However, in this case, the impact can be attenuated by the elastic member arranged on the outer periphery of the ring member. Therefore, even in the case of an earthquake near the limit of the damping action of the base-isolated floor member, the damping action is not lost immediately, but is gradually reduced. Therefore, it is possible to reduce the adverse effect due to the change in acceleration on people, articles, and the like on the floor supported by the seismic isolation floor member. In addition, with respect to vertical vibrations, by providing elastic legs below the base member, seismic isolation can be ensured by its elastic expansion and contraction. Note that these elastic legs also contribute to improving the walking sensation on the floor.

[0017]

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, a circular concave portion 2 as viewed from a plane is provided at a central portion of a square base member 1 as viewed from a plane.
And a small recess 3 concentrically at the center of the recess 2.
Is configured. As shown in FIG. 1, inside the inner peripheral surface of the concave portion 2, as shown in FIG. Similarly, an arc-shaped ridge 5 is erected, and similarly, inside the inner peripheral surface of the small concave portion 3, as viewed from a plane, just inside the inner peripheral surface to form a coupling ring groove 6 along the inner peripheral surface. An arc-shaped and concentric arc-shaped ridge 7 is erected. The upper surface around the recess 2 is a mounting surface 9 on which a substrate member 8 described later is slidably mounted.
The lower surface and the mounting surface 9 of the substrate member 8 are coated with tetrafluoroethylene resin to form a smooth surface.

A coupling cover plate 10 is arranged in the small recess 3 so as to form an auxiliary buffer space between the small recess 3 and the bottom. As shown in FIG. 1, the connecting lid plate 10 has a connecting ring formed on the periphery thereof inserted into the connecting ring groove 6 and fixed with an adhesive.
The coupling lid plate 10 is provided with a through hole 21 at the center thereof. The coupling disc 12 formed at the lower end of the coupling shaft 11 is connected to an auxiliary disk composed of the coupling lid plate 10 and the small recess 3. The connecting shaft is inserted into the buffer space so as to be movable in the horizontal direction, and the coupling shaft is protruded upward from the through hole 21. The diameter of the through-hole 21 formed in the center of the coupling cover plate 10 is set to such a degree that the circular cover 13 is allowed to move in the horizontal radial direction from the center until the eccentric deformation of the circular cover 13 is maximized.

The circular cover 13 is arranged in the concave portion 2 so as to form a buffer space between the concave portion 2 and the bottom. As shown in FIGS. 1 and 2, the circular cover 13
Basically, it is composed of a plurality of concentric wavy portions, a central portion has a cross-shaped cross portion as viewed from below, and a central portion thereof has a cylindrical portion 14 through which the coupling shaft 11 passes. On the periphery, a connecting ring is formed. It is to be noted that a sheet portion circular as viewed from a plane is formed at the upper end of the cross portion so as to connect the entire portion, and the outer peripheral end thereof is connected to the innermost wavy portion. Then, as shown in FIGS. 1 and 2, the peripheral connecting ring is inserted into the connecting ring groove 4 and fixed with an adhesive, and as described above, the concave portion 2 and the circular cover body 1 are fixed.
3 forms a buffer space. At this time, the coupling shaft 11 is made to pass through the cylindrical portion 14. The buffer space is filled with water 20. The water 20 is filled to some extent in the space formed inside the crest of the wavy portion of the circular cover 13. Since the auxiliary buffer space formed by the coupling lid plate 10 and the small concave portion 3 also communicates with the buffer space through the through-hole 21, the water 20 naturally fills the auxiliary buffer space at the same time.

At the center of the lower surface of the substrate member 8, a ring member 16 having a bottom plate 15 is attached as shown in FIG.
An auxiliary buffer space is formed between the lower surface of the substrate member 8 and the ring member 16, and a circular through hole 22 is formed in the center of the bottom plate 15, and the upper end of the coupling shaft 11 is formed through the through hole 22. Is inserted into the auxiliary buffer space, and the coupling disk 17 mounted on the upper end of the coupling shaft 11 is positioned in the auxiliary buffer space so as to be movable in the horizontal direction. Thus, at least the through-hole 22 is such that the coupling disk 17 relatively moves in the auxiliary buffer space in the horizontal direction, and the peripheral end of the through-hole 22 is located on the peripheral side of the auxiliary buffer space, that is, the ring member 16. The diameter of the peripheral side of the coupling shaft 11 is set so that the peripheral side of the coupling shaft 11 does not abut against the inner circumference until it comes into contact with the inner circumference. The ring member 16
In this example, four bolts protruding upward at 90 degree intervals are passed through bolt holes formed in corresponding positions of the substrate member 8, and nuts are screwed and fixed from above.

The elastic member 1 is provided on the outer periphery of the ring member 16.
Place 8 Similarly, elastic legs 19, 19,... Are arranged at 90 ° angular intervals below the base member 9 to prepare for a direct earthquake. Although not shown, the substrate member 8 is assumed to have a decorative material of the same size attached to the upper surface thereof.

In this embodiment, the structure described above is useful for constructing floors of various buildings having a function of damping earthquakes and other shaking. Moreover, its mounting is extremely simple. First, a flat floor base is formed in a target area forming a floor in the same manner as in a general case. This seismic isolation floor member may be arranged continuously on the floor base which is flat as described above. That is, with the lower surface side of the base member 1 facing down, the adjacent seismic isolation floor members may be laid on the floor foundation while the respective sides of the base member 1 and the substrate member 8 abut against each other. The work is completed by laying all the target areas in this way. Note that a slight gap is provided at the outer edge of the installation area of the seismic isolation floor member, that is, at a position adjacent to a wall surface or the like. An auxiliary plate that can move back and forth near the outer edge will be provided. Thus, the floor member of this embodiment can be very easily installed at a required position to form a floor. In addition, when the floor is formed by the seismic isolation floor member in this manner, the seismic isolation operation can be performed very efficiently even when the vibration is transmitted to the floor base due to an earthquake or the like.

At the time of an earthquake, first, horizontal shaking
In the case of the main swing, the base member 1 also swings in accordance with the swing of the floor base, and the coupling shaft 11 passing through the central cylindrical portion 14 of the circular cover 13 also swings in the same manner. The swing is small, and even by the swing, the peripheral end of the coupling disk 17 at the upper end of the coupling shaft 11 comes into contact with the inner periphery of the upper auxiliary buffer space, that is, the inner periphery of the ring member 16. Before this, the substrate member 8 can be kept almost stationary. That is, the seismic isolation function can be performed almost completely. When the swing becomes large and the peripheral end of the coupling disk 17 comes into contact with the inner periphery of the ring member 16, the water 20
By the action of the circular cover 13, the vibration transmitted to the base member 1 is transmitted to the substrate member 8 while being attenuated via the coupling shaft 11.

That is, the connecting shaft 11 is connected to the base member 1 via the circular cover 13 with respect to horizontal swing, and a special load is applied to the connecting shaft 11. In a state in which the water is not in contact with the inner periphery of the ring member 16, that is, in a state where the peripheral end of the coupling disk 17 at the upper end is not in contact with the inner periphery of the ring member 16, the circular cover 13 also depends on the state of movement of the water 20 in the buffer space. Even if there is some influence, the shape is almost the same as that of the stationary state, that is, the cylindrical portion 14
Are positioned substantially correctly at the center and maintain a non-eccentric state, and the vibration of the base member 1 is transmitted to the coupling shaft 11 almost as it is.

A state in which a load is applied to the coupling shaft 11, that is, the peripheral end of the coupling disc 17 at the upper end thereof is
In a state in which it comes into contact with the inner periphery of the base member 6, a load generated due to the weight of the board member 8 itself and the furniture and the like placed thereon is applied to the coupling shaft 11 through the ring member 16, and the load is reduced. The circular cover 13 passes through the coupling shaft 11 and the cylindrical portion 14, and the direction is opposite to the vibration direction of the base member 1. Therefore, the circular cover 13 must be deformed to an eccentric state. It is. At this time, the sectional space formed inside the lower part of the crest of each wavy portion of the circular cover body 13 is to be reduced on the side closer to the center and expanded on the opposite side. The water 20 filled in the substrate member 8 becomes the resistance, and the eccentric deformation is substantially in proportion to the load applied to the substrate member 8.

However, in this seismic isolation floor member, if the shaking is small, the seismic isolation is almost complete, and the board member 8 hardly causes shaking. Even if the shaking increases, the circular cover 13 The eccentric deformation causes the vibration to be attenuated and transmits only a slight vibration to the substrate member 8. In particular, when the load applied to the substrate member 8 is large, the eccentric deformation of the circular cover body 13 increases, and the degree of attenuation of the swing increases (the lower surface of the substrate member 8 and the mounting surface 9 of the base member 1 are sufficiently large). Assuming smoothness). In addition, it will be installed continuously,
For example, in the base-isolated floor member constituting the floor of one room, the adjacent substrate members 8, 8... Will be considered.

In the case where the swinging is further increased, if the eccentric deformation of the circular cover 13 is increased, the ring member 16
The outer periphery of the ring member 16 may hit the inner peripheral surface of the concave portion 2 of the base member 1. In this case, the impact can be attenuated by the elastic member 18 arranged on the outer periphery of the ring member 16. . Therefore, even in the case of an earthquake near the limit of the damping action of the base-isolated floor member, the damping action is not lost immediately, but is gradually reduced. Thus, it is possible to reduce the adverse effects of changes in acceleration on people, articles, and the like on the floor supported by the seismic isolation floor member. Also, against vertical vibration, seismic isolation can be ensured by the elastic expansion and contraction of the elastic legs 19, 19,. .. Also contribute to improving the walking feeling on the floor.

[0028]

According to the present invention, when an earthquake or other vibration occurs, the vibration or swing transmitted to the floor substrate is appropriately blocked, and the members above the substrate member have more than a slight vibration or the like. Is not transmitted. In the case of a relatively small earthquake, the upper end of the coupling shaft can be freely moved in the horizontal direction within a certain range, so that the lower surface of the substrate member and the mounting surface can be slid as freely as possible. If you put it, you can get the seismic isolation effect almost completely. Further, when the swing becomes larger than this, the eccentric deformation of the circular cover body attenuates it and transmits only a slight vibration to the board member. In particular, when the load applied to the substrate member is large, the eccentric deformation of the circular cover body is increased, and the degree of vibration attenuation is increased (the lower surface of the substrate member and the mounting surface of the base member must be sufficiently smooth). Assumption). Further, when the swing becomes larger and the outer periphery of the ring member collides with the inner peripheral surface of the concave portion of the base member,
By arranging the elastic member on the outer periphery of the ring member, the impact can be attenuated. Therefore, even in the case of an earthquake near the limit of the damping action of the base-isolated floor member, the damping action is not lost immediately, but gradually decreases. Thus, it is possible to reduce the adverse effects of changes in acceleration on people, articles, and the like on the floor supported by the seismic isolation floor member. Also, against vertical vibration, seismic isolation can be ensured by the elastic expansion and contraction of the elastic legs disposed below the base member. Note that these elastic legs also contribute to improving the walking sensation on the floor.

[Brief description of the drawings]

FIG. 1 is a partially cutaway schematic front sectional view of a base-isolated floor member according to one embodiment.

FIG. 2 is a schematic sectional view taken along line AA of FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 base member 2 concave portion 3 small concave portion 4 connecting ring groove 5 circular ridge 6 connecting ring groove 7 circular ridge 8 substrate member 9 mounting surface 10 coupling lid plate 11 coupling shaft 12 coupling disk 13 circular cover body 14 cylindrical portion 15 Bottom plate 16 Ring member 17 Joint disk 18 Elastic member 19 Elastic leg 20 Water 21 Through hole 22 Through hole

Claims (3)

(57) [Claims] 1. A center portion of a base member is provided with a circular concave portion as viewed from a plane, and the concave portion is covered with a flexible circular cover body composed of a plurality of concentric corrugated portions having different diameters. Filling a buffer space formed between the cover body and the concave portion with a liquid, and slidably mounting the substrate member on a mounting surface formed on an upper peripheral portion of the concave portion of the base member; and The vicinity of the center of the concave portion of the member and the lower end of the coupling shaft are coupled so as to be movable in the horizontal direction within a certain range, and the circular cover is provided while maintaining watertightness in the middle of the coupling shaft. A seismic isolation floor member which penetrates a central part of a body and further connects a lower portion of the substrate member and an upper end of the connection shaft so as to be movable in a horizontal direction within a certain range. 2. The coupling between the vicinity of the center of the concave portion and the lower end of the coupling shaft, a coupling disc is attached to the lower end of the coupling shaft, and a small concave portion is formed at the bottom center of the concave portion. A coupling lid plate is fixedly provided to form an auxiliary buffer space between the bottom of the coupling lid plate, and the coupling shaft penetrating the coupling lid plate in the central portion of the coupling lid plate is movable within a certain range in the radial direction. A circular through hole is formed as described above, and the lower end of the coupling shaft is further inserted into the auxiliary buffer space from the through hole so that the coupling disk can be freely moved in the auxiliary buffer space in the horizontal direction. A ring having a bottom plate at the center of the lower part of the substrate member, while a lower surface of the substrate member is coupled to an upper end of the coupling shaft by attaching a coupling disk to an upper end of the coupling shaft. Attach the member and attach the center part of the bottom plate An auxiliary buffer space formed by drilling a circular through-hole so that the shaft is movable in a certain range in the radial direction, and forming an upper end of the coupling shaft between the through-hole and the lower surface of the ring member and the substrate member. 2. The seismic isolation floor member according to claim 1, wherein said floor member is inserted into said auxiliary buffer space so as to be movable horizontally in said auxiliary buffer space. 3. The seismic isolation floor member according to claim 2, wherein an elastic member is arranged on an outer periphery of said ring member.