JP2002276196A - Seismically isolated structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seismically isolated structure which allows effective use of a space formed therein, the space being out of effective use other than inspection and maintenance thereof, to thereby sufficiently preserve water for living such as fire-extinguishing water and potable water. SOLUTION: The seismically isolated structure including flat planes and vertical walls and being constructed on a foundation structure, is comprised of the foundation structure 2, a superstructure 7, and a water bag 12. The superstructure 1 is rockably borne by the foundation structure 2 and includes vertical portions 10 and a horizontal portion 11. The water bag 12 is expandable, and stores water therein. Further, the water bag 12 is arranged in a space defined by the foundation structure 2, the vertical portions 10, and the horizontal portion 11, in a manner being adjacent to the space.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic retrofit of a building, and more particularly, to a water bag storing water, the flat surface and the vertical wall of a lower structure, and the vertical and horizontal portions of an upper structure. And a seismic isolation mechanism arranged adjacent to the space defined by

[0002]

2. Description of the Related Art Conventionally, various seismic isolation mechanisms have been used to reduce the inertial force transmitted to an upper building during an earthquake. Conventionally known seismic isolation mechanisms for buildings include a high-damping laminated rubber, a laminated rubber and a damper for absorbing inertial energy. The mechanism with this laminated rubber and damper shifts the natural period of the upper building to the longer period side from the predominant period of the seismic motion, reduces the inertial force transmitted to the upper building and absorbs the inertial force energy Have been able to. These mechanisms are highly reliable and are widely used because the effect of reducing input to upper buildings during an earthquake is remarkable.

FIG. 1 shows a seismic isolation structure using the above-described seismic isolation mechanism. In this seismic isolation structure, a plurality of bases 3 are provided on a base structure 2 formed by excavating the ground 1 and casting concrete, and a high damping laminated rubber 4 is provided on the base 3. The support portion 5 is provided on the high attenuation laminated rubber 4. A beam, a floor slab 6, and the like are bridged in the support portion 5 in the lateral direction, and an upper building 7 is constructed above the beam, the floor slab 6, and the like. Further, the seismic isolation structure shown in FIG. 1 is shown to be constructed from the base structure 2 and to have a damper 9 disposed between opposing support structures 8a, 8b.

The damper 9 is used in combination with the laminated rubber 4a to add damping to the laminated rubber 4a. The seismic isolation structure shown in FIG. 1 shifts the natural period of the upper building 7 to the longer period side from the predominant period of the seismic motion, reduces the inertial force transmitted to the upper building 7, and uses the It is configured to absorb energy. This damper 9 is a viscoelastic damper,
It can be appropriately selected from a steel damper and a friction damper.

[0005] In the seismic isolation structure described above, the natural period of the upper building is shifted to a longer period side than the predominant period of the seismic motion,
The above-mentioned high damping laminated rubber is used as a mechanism to reduce the inertial force transmitted to the upper building and absorb the energy input in the event of an earthquake, or a damper for energy absorption is added to the laminated rubber. is there. Although this seismic isolation structure can provide sufficient seismic isolation for the upper building, it is not used except for inspection and maintenance, and it is possible to install other devices. A space will be formed.

[0006] However, since this space cannot be used effectively in normal cases, the economical efficiency of this space has been a problem in the seismic isolation structure described above.

If a lifeline such as water or electricity is stopped during a disaster such as a large earthquake, fire extinguishing water cannot be supplied, and it is expected that the fire will spread. Furthermore, if it takes time to restore the water supply even if a fire does not occur, there is another problem that it is not possible to supply drinking water or other domestic water until the restoration.

[0008]

SUMMARY OF THE INVENTION Accordingly, in view of the above-mentioned problems, the present invention can effectively utilize the above-mentioned space, improve the damping effect as compared with the conventional seismic isolation mechanism, and further improve the disaster. In the event that the lifelines such as water supply and electricity are shut down, it is possible to secure sufficient water for daily use such as fire extinguishing water or drinking water, and in normal times, as energy saving equipment such as heat storage tanks. It is intended to provide a seismic isolation structure that can be used.

[0009]

That is, the above object of the present invention is achieved by providing a seismic isolation structure of the present invention.

According to the first aspect of the present invention, a lower structure having a flat surface and a vertical wall, a vertical portion and a horizontal portion which are swingably supported by the flat surface and extend to the flat surface. An upper structure comprising: a water bag that stores and retracts water, and the water bag is extendable, and the water bag is defined by the flat surface, the vertical wall, the vertical portion, and the horizontal portion. A seismic isolation structure characterized by being disposed adjacent to each other in a space.

According to a second aspect of the present invention, there is provided a seismic isolation structure including the flat structure and the vertical wall, wherein the lower structure is a foundation structure.

According to a third aspect of the present invention, a plurality of the water bags are provided, and the plurality of the water bags are communicated with each other so that the stored water can be supplied or received. A seismic structure is provided.

According to the invention of claim 4 of the present invention, the vertical wall of the lower structure is provided with a partition wall and sliding means for enabling the partition wall to slide. A seismic isolation structure is provided.

According to a fifth aspect of the present invention, in the water bag, the resistance means is formed on an inner surface,
Alternatively, a seismic isolation structure provided in a communication passage communicating with the water bag is provided.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. In the embodiments described below, a lower structure including a flat surface and a vertical wall will be described as a basic structure. Further, the basic structure includes a flat surface and a vertical wall. In the embodiment described below, a structure including the flat surface and the vertical wall is used as the basic structure. FIG. 2 is a diagram showing a first embodiment of the seismic isolation structure of the present invention. In the seismic isolation structure of the present invention, a plurality of bases 3 are provided on a base structure 2 formed by excavating the ground 1 and casting concrete, and the base 3 has low horizontal rigidity and vertical A laminated rubber 4a used as a support member having high rigidity is provided, and a support portion 5 is provided on the laminated rubber 4a. If necessary, a high-damping laminated rubber 4 having damping performance can be used as a support member. The foundation structure 2 that can be used in the present invention is a direct foundation such as a pressure plate or footing constructed by excavating the ground 1 and placing concrete. If the ground 1 is bad, the ground 1 , May be supported by a pile or the like. Further, an underground continuous wall may be used.

A beam, a floor slab 6 and the like are laid over the support portion 5 in a lateral direction, and an upper building 7 is constructed above the beam and the floor slab 6 and the like. Further, the seismic isolation structure of the present invention is provided with a vertical portion 10 extending to the base structure 2 in the upper building 7, and the vertical portion 10 also swings in response to the swing of the upper building 7. Is configured. Further, a horizontal portion 11 is provided on the lower side of the beam, the floor slab 6, and the like, so that the water bag described below does not deform in the vertical direction when the water bag is compressed in the horizontal direction.

In the base-isolated structure shown in FIG.
In a space defined by the vertical portion 10 and the horizontal portion 11, a water bag 12 that stores and stores water and that can expand and contract is provided. In the embodiment shown in FIG. 2, the water bag 12 is disposed so as to be adjacent to the basic structure 2, the vertical portion 10, and the horizontal portion 11. In FIG. 2, for example, when the upper building 7 receives the inertial force F and moves in the same direction as the direction in which the inertial force F acts, the vertical portion 10 provided in the upper building 7 also moves to the foundation structure 2. Approaching,
The water bag 12 disposed between the basic structure 2 and the vertical portion 10 is compressed by the vertical portion 10. In addition, the water bag 12 shown in FIG.
The water bag 12 is not deformed in the vertical direction by the horizontal portion 11, and is in a direction in which the inertial force F acts.
Is compressed, and the water in the compressed portion moves to the uncompressed portion in the water bag 12. In the inspection and maintenance of the seismic isolation structure of the present invention, a space can be secured by draining water from the water bag 12.

The seismic isolation structure shown in FIG.
2 is compressed so that the vibration energy applied to the upper building 7 is given to the water inside the water bag 12. The vibration energy given to the water inside the water bag 12 may include kinetic energy for moving the water to an uncompressed portion as described above, and friction generated between the water and the inner surface of the water bag 12 when the water moves. Is converted to thermal energy. The seismic isolation structure shown in FIG. 2 reduces the inertial force F acting on the upper building 7 due to the loss of the vibration energy, and can shorten the free vibration time of the upper building 7. In addition, the water bag 1 shown in FIG.
Reference numeral 2 is provided over the entire circumference so that vibration energy can be absorbed in any horizontal swing. Since the seismic isolation structure of the present invention includes the horizontal portion 11, the compressed portion of the water bag 12 does not deform in the vertical direction and does not create a space between the water bag 12 and the foundation structure 2 or the vertical portion 10. The structure is such that the damping effect as described above is always obtained.

As the vertical portion 10 provided in the upper building 7 of the seismic isolation structure of the present invention, a water bag 12 can be provided in the space between the vertical portion 10 and the foundation structure 2. Any size, material, strength, or shape may be used as long as the water bag 12 can be compressed by swinging. The horizontal portion 11 provided in the upper building 7 of the seismic isolation structure of the present invention may have any size, material, and strength as long as the water bag 12 can be prevented from being deformed in the vertical direction by being compressed. Alternatively, it may be shaped. Furthermore, it may be provided in the vertical part 10 instead of the beam or the lower side of the floor slab 6 described above. Also, the base structure 2 is prevented from contacting the horizontal portion 11 and the base structure 2 due to the swing of the upper building 7.
May be provided with a groove into which the horizontal portion 11 can be loosely inserted.

In the seismic isolation structure shown in FIG. 2, resistance means such as projections can be provided on the inner surface of the water bag 12. The provision of the resistance means increases friction between the inner surface of the water bag 12 and the flow of water, and the above-described vibration energy is further converted to heat energy and lost. Therefore, the seismic isolation structure of the present invention
By providing the resistance means, the damping effect can be further improved. As the resistance means that can be provided in the water bag 12 shown in FIG. 2, a protrusion, a baffle plate, or the like can be given. The projections and baffles used as the resistance means can be provided by bonding or welding to the inner surface of the water bag 12, and can be of any shape as long as they can provide appropriate resistance to water moving inside. Alternatively, any number of protrusions or baffles may be provided.

FIG. 3 is a view showing a seismic isolation structure according to a second embodiment of the present invention. In the embodiment shown in FIG. 3, a plurality of water bags 12 are arranged adjacent to each other in a space defined by the base structure 2, the vertical portion 10, and the horizontal portion 11. The plurality of waterbags 12 are adjacent to each other and have a line 14 as a communication passage communicating with a heat collector 13 installed on the roof of the upper building 7.
Is provided. As shown in FIG. 3, the line 14 may be provided on the outer periphery of the upper building 7, or may be provided inside the upper building 7. Further, in FIG. 3, the water bags 12 communicate with each other through the heat collector 13, but the water bags 12 may directly communicate with each other.

In FIG. 3, the upper building 7 receives an inertial force F due to a seismic motion or the like, and the water bag 12 disposed in the same direction as the direction of the inertial force F is compressed by the vertical portion 10, and the water bag 12 is compressed. Water in line 12 is line 1
4 to a heat collector 13. In addition, the heat collector 13
Sent to the base structure 2 and the vertical portion 1 on the opposite side of the water bag 12 compressed by the inertial force F, for example.
The water bag 12a disposed adjacent to the water bag 12 is expanded and can be received in the expanded water bag 12a. The seismic isolation structure shown in FIG. 3 is similar to the embodiment shown in FIG.
Is compressed, so that the vibration energy applied to the upper building 7 is given to the water inside the water bag 12. The vibration energy given to the water inside the water bag 12 is, as described above, the kinetic energy and potential energy for flowing the water to the water bag 12a via the heat collector 13, and the water bag 12 Is lost by being converted into thermal energy due to friction generated in the inner surface of the inside and the line 14. The seismic isolation structure shown in FIG. 3 reduces the inertial force F acting on the upper building 7 due to the loss of the vibration energy, and can shorten the free vibration time of the upper building 7. The water bag 12b is provided so that the inertia force can be reduced even when the inertia force is applied in a direction perpendicular to the direction in which the inertia force F acts.
The water bags are arranged adjacent to each other over the periphery by 2, 12a and 12b, so that they have seismic isolation in any direction.

The water bag 12 used in the seismic isolation structure shown in FIG. 3 may be any shape as long as it can be disposed adjacently as described above. As shown in FIG.
Circulates water heated by the heat collector 13 installed on the roof of the upper building 7 with the water bag 12,
It can be used as a heat storage tank. In addition, at the time of disaster, it can be used as fire extinguishing water or domestic water. Further, in the present invention, as described above, the resistance means can be provided on the inner surface of the water bag 12 or inside the line 14 through which the water discharged from the water bag 12 flows. By providing this resistance means, friction between the inner surface of the water bag 12 and the inside of the line 14 and the flowing water is increased, and the vibration energy applied to the upper building 7 shown in FIG. 3 is converted into more heat energy. be able to.

As the resistance means that can be used in the seismic isolation structure shown in FIG. 3, a water bag 12 provided with a projection or a baffle plate on the inner surface can be used as in the embodiment shown in FIG. In addition, a projection provided in the line 14 and a valve provided in the middle of the line 14 can be used. The projections used as the resistance means can be provided by bonding or welding to the inside of the line 14, and any shape or any number of projections can be provided as long as they can provide appropriate resistance to water flowing through the line 14. May be provided. When a valve is used as the resistance means, the opening of the valve may be manually set in advance. However, in conjunction with a seismic motion detection device provided in another part of the upper building 7, an At times, the operation of opening or closing the valve may be appropriately performed.

FIG. 4 is a cross-sectional view of the seismic isolation structure of the present invention shown in FIG. 2 taken along a cutting line AA. In the embodiment shown in FIG. 4, a plurality of laminated rubbers 4a connecting the basic structure 2 and the upper building 7 shown in FIG. 2 are shown at the center, and the upper building shown in FIG. 7 is provided with a vertical part 10 extending to the substructure 2. Further, the water bag 12 shown in FIG.
It is arranged adjacent to the space defined by the vertical portion 10 and the horizontal portion 11 shown in FIG. As shown in FIG. 2, the upper building 7 shown in FIG.
In response to the movement in the direction in which the inertial force F acts, the vertical portion 10 also moves and the water bag 12 in the direction in which the inertia force F acts is compressed, and the water present in the compressed portion is:
It moves to the uncompressed part in the direction of arrow C. In the seismic isolation structure shown in FIG. 4, the vibration energy applied to the upper building 7 shown in FIG. 2 is given to the water inside the water bag 12 when the water bag 12 is compressed. In addition, the vibration energy given to the water inside the water bag 12 is, as described above, between the kinetic energy for moving the water to the uncompressed portion and the inner surface of the water bag 12 when the water moves. It is lost by being converted to thermal energy due to the resulting friction. The seismic isolation structure shown in FIG. 4 reduces the inertial force F acting on the upper building 7 shown in FIG. 2 due to the loss of the vibration energy, and shortens the free vibration time of the upper building 7 shown in FIG. Can be done. Further, FIG.
A resistance means 15 is provided on the inner surface of the water bag 12 shown in FIG. 2 to increase friction against the flow of water inside the water bag 12 to increase the friction of the upper building 7 shown in FIG.
Can be converted into more heat energy. In the embodiment shown in FIG. 4, the provision of the resistance means 15 further reduces the vibration energy, reduces the inertial force F acting on the upper building 7 shown in FIG.
Free vibration time can be shortened.

FIG. 5 is a cross-sectional view of the seismic isolation structure of the present invention shown in FIG. 3 taken along a cutting line BB. In the embodiment shown in FIG. 5, a plurality of laminated rubbers 4a connecting the basic structure 2 and the upper building 7 shown in FIG. 3 are shown in the center, and the upper building shown in FIG. 7 is provided with a vertical part 10 extending to the substructure 2. Further, a plurality of water bags 12 are arranged adjacent to each other in a space defined by the basic structure 2 shown in FIG. 5, the vertical portion 10, and the horizontal portion 11 shown in FIG. 12 are adjacent to each other and
Is connected to a line 14 which is a communication passage provided on the outer periphery of the communication line.

Further, when the upper building 7 shown in FIG. 3 vibrates due to seismic motion or the like, the water bag 12 is compressed by the vertical portion 10, and when the water bag 12 is compressed, the water in the water bag 12 is drained by the line 14. Through the other water bag 12. In the present invention, the line 14 is not limited to the outer periphery of the basic structure 2 as shown in FIG. 5, but may be arranged in a space inside the vertical portion 10 or a space above the horizontal portion 11 shown in FIG. good. The line 14 is provided with a resistance means 15 so that water flowing through the line 14 can be given resistance.

FIG. 6 is a diagram showing in detail the flow of water accompanying the rocking during an earthquake in the embodiment of the seismic isolation structure of the present invention shown in FIG. When the upper building 7 shown in FIG. 3 receives the inertial force F due to the seismic motion, the direction in which the inertial force F acts on the vertical part 10 provided in the upper building 7 shown in FIG. 3 together with the upper building 7 shown in FIG. Go to The water bag 12 arranged adjacent to the base structure 2 and the vertical portion 10 is compressed by the movement of the vertical portion 10 and is compressed by another water bag 12.
The vibration energy applied to the upper building 7 shown in FIG. 3 is lost by being converted into kinetic energy for moving the water or thermal energy due to friction, and is lost. 7, the inertial force F acting on the element 7 is reduced. In this case, when the water bag 12 is compressed by the vertical portion 10, the water in the water bag 12 is discharged in a direction indicated by an arrow D. In the embodiment shown in FIG. 6, the water bag 12a adjacent to the base structure 2 and the vertical portion 10 in the direction opposite to the direction of the acting inertial force F is expanded and the water discharged from the water bag 12 is expanded. Is received through the line 14 into the water bag 12a.

During an earthquake, the upper building 7 shown in FIG. 3 vibrates, so that the inertial force F acts alternately in the direction of the inertial force F described above and in the opposite direction. When the inertial force F acts in a direction opposite to the direction of the inertial force F described above, the vertical portion 10 provided in the upper building 7 shown in FIG.
Moves together with the upper building 7 shown in FIG. 3 in the direction opposite to the inertial force F. In this case, the vertical portion 10 moves in the direction opposite to the inertia force F, the above-described expanded water bag 12a is compressed, and water moves to the water bag 12,
Vibration energy applied to the upper building 7 shown in FIG. 3 is lost by being converted into kinetic energy for moving water or thermal energy due to friction, and inertia acting on the upper building 7 shown in FIG. The force F is reduced. In this case, when the water bag 12 a is compressed by the vertical portion 10, the water in the water bag 12 a is discharged toward the water bag 12. Further, as the water bag 12 adjacent to the base structure 2 and the vertical portion 10 expands, the water bag 12 that has been compressed as it expands returns to its original shape, and water discharged from the water bag 12a is supplied to the line 14. Through the water bag 12.

The seismic isolation structure shown in FIG. 6 is not limited to the direction in which the inertial force F acts, and can reduce the inertial force F by converting vibration energy into other energy in any horizontal direction. it can. Therefore, the seismic isolation structure shown in FIG. 6 can provide seismic isolation in any horizontal direction, and the inertial force F acting on the upper building 7 shown in FIG.
, The free vibration time of the upper building 7 shown in FIG. 3 can be shortened. Resistance means 1 shown in FIG.
By providing 5, the damping effect of the seismic isolation structure shown in FIG. 6 can be further improved.

FIG. 7 is a sectional view showing another embodiment of the seismic isolation structure of the present invention. In FIG. 7, the basic structure 2 is
The ground 1 is formed by excavating the ground 1 and casting concrete, and a partition wall 17 is provided on a vertical wall of the ground 1 via sliding means 16 such as a roller or a slider.
In the embodiment shown in FIG. 7, the substructure 2 is formed from four vertical walls, each having a sliding means 16.
Is provided. The sliding means 16 includes the partition wall 1.
The partition wall 17 is slidable in the left-right direction with respect to the vertical wall of the basic structure 2 indicated by the arrow E. In the seismic isolation structure of the present invention, any means other than a roller or a slider can be used as long as the partition wall 17 can slide in the left-right direction with respect to the vertical wall of the foundation structure 2.

In FIG. 7, a vertical portion 10 having a cross shape is provided in an upper building (not shown), and each tip portion 18 of the vertical portion 10 and each partition wall 1 are provided.
7 is provided so as to be slidable in the direction of arrow G with the tip 19. A roller or a slider can be used for the distal end portion 18 of the vertical portion 10 and the distal end portion 19 of the partition wall 17 of the seismic isolation structure of the present invention, but any other means can be used as long as it can slide. Can be used. Further, in the embodiment shown in FIG. 7, the tip portions 18 of all the vertical portions 10 are all
Are arranged on the same side with respect to the distal end portion 19, so as to be seismically isolated against swinging in any direction. In addition, the portions that allow the vertical portion 10 and the partition wall 17 to be slidable are not limited to the respective distal end portions 18 and 19 as shown in FIG. 10 and partition wall 17
May be provided on the whole.

Further, in FIG. 7, the basic structure 2
A water bag 12 having a hole at the center thereof is provided adjacent to a space defined by the vertical portion 10 and a horizontal portion (not shown). The hole of the water bag 12 is Laminated rubber 4 for connecting upper buildings (not shown)
It has an appropriate size so as to be adjacent to the periphery of a.
In the embodiment shown in FIG. 7, four water bags 12c, 12d, 12e, and 12f are provided, and water is stored in each of the water bags 12c, 12d, 12e, and 12f. In addition, water bag 1
In each of 2c, 12d, 12e, and 12f, a line 14 is provided as a communication path communicating with the outer periphery of the basic structure 2. The line 14 is not limited to the outer periphery of the basic structure 2 and may be provided in a space inside the vertical portion 10 or in a space above a horizontal portion (not shown). The line 14 is provided with a resistance means 15 so that water flowing through the line 14 can be given resistance. In the embodiment shown in FIG. 7, the upper building (not shown) is connected to the laminated rubber 4a and the water bag 12 via a horizontal portion (not shown) at the same time.
c, 12d, 12e, and 12f. In the seismic isolation structure of the present invention, the upper building (not shown) is supported by the water bag 12 so that the laminated rubber 4a can be made smaller, or the number of supports by the laminated rubber 4a can be reduced.

FIG. 8 is a diagram showing in detail the flow of water accompanying the rocking during an earthquake in the embodiment of the seismic isolation structure of the present invention shown in FIG. When the upper building (not shown) receives the inertial force F, the vertical portion 10 provided in the upper building (not shown) also moves in the same direction as the direction in which the inertial force F acts, together with the upper building (not shown). In the embodiment shown in FIG. 8, the partition walls 17a, 17b are provided with sliding means 16a, 16b.
Thereby, it becomes possible to move together with the vertical portion 10 in the same direction as the direction in which the inertial force F acts. In addition, the partition wall 17
c and 17d remain stopped because no force acts in the direction perpendicular to the axial direction indicated by the inertial force F. Therefore, the tip portions 18c and 18d of the vertical portion 10 and the partition wall 17
c and 17d slide with the tip portions 19c and 19d, and the partitioning walls 17a and 17b are moved by the above-described sliding means 16a and 16b.
Can move together with the vertical portion 10 in the direction in which the inertial force F acts.

The water bags 12c and 12d shown in FIG.
Is compressed by the vertical portion 10 and the partition walls 17a, 17b, and the water in the water bags 12c, 12d moves to the water bags 12e, 12f. The vibration energy applied to the upper building (not shown) is lost by being converted into kinetic energy for moving water or thermal energy due to friction. Further, inertia force F acting on the upper building (not shown) due to loss of vibration energy applied to the upper building (not shown).
And the free vibration time of the upper building (not shown) can be shortened. In this case, the water bag 12
c, 12d are the vertical part 10 and the partition walls 17a, 17b
When compressed, the water in the water bags 12c and 12d is discharged in the direction of arrow H, and the discharged water is moved by the vertical portion 10 through the line 14 and the water adjacent to the base structure 2 and the vertical portion 10 is moved. The bags 12e, 12f are adapted to be expanded and received. As described above, in the seismic isolation structure of the present invention, the inertial force F can be reduced not only in the direction in which the inertial force F acts as shown in FIG. 8 but also in any horizontal direction. FIG.
Is provided with resistance means 15 so that the water flowing through the line 14 can be given resistance. By using the above-described resistance means for the line 14, the damping effect of the seismic isolation structure shown in FIG. 8 can be further improved.

FIG. 9 is a sectional view showing still another embodiment of the seismic isolation structure of the present invention. In the embodiment shown in FIG. 9, a plurality of walls 20 are provided in
One section 21 is formed. In FIG. 9,
The basic structure 2 and the wall 20 forming the section 21 are vertical walls, and the structure in each section 21 is the same as the embodiment shown in FIG. The upper building, not shown in FIG.
The upper building (not shown) includes
1 so as to slide properly with the partition wall 17 provided therein.
Six cross-shaped vertical portions 10 are provided at appropriate positions. Further, the water bag 12 is disposed so as to be adjacent to the vertical wall of the section 21, the basic structure 2 which is a flat surface on the bottom surface of the section 21, and the vertical portion 10. A horizontal part (not shown) provided in an upper building (not shown) is adjacent to the building.

The section 21 shown in FIG. 9 is divided into four sections by a vertical section 10 and a partition wall 17, and a water bag 12 is provided in each section. Water is stored in the water bag 12. In addition, the water bag 12
As in the embodiment shown in FIG. 7, a line 14 is provided as a communication passage communicating with each other on the outer periphery of the section 21. The line 14 is not limited to the outer periphery of the section 21 and may be provided in a space inside the vertical portion 10 or in a space above the horizontal portion (not shown). Each section 2 shown in FIG.
The water flow accompanying the swing at the time of the earthquake in 1 is the same as the water flow in the embodiment shown in FIG. Further, the seismic isolation structure shown in FIG. 9 can be converted into kinetic energy or heat energy to be lost by converting the vibration energy to the free vibration time of the upper building (not shown) as in the above-described embodiment. . Further, in the seismic isolation structure of the present invention shown in FIG. 9, the upper building (not shown) is supported by the water bags 12 disposed in the respective sections 21 so that the laminated rubber 4a can be reduced, and the laminated rubber 4a can be reduced. Can reduce the number of supports. Further, the seismic isolation structure of the present invention is not limited to the six sections 21, and may be divided into any number of sections 21.

Although the present invention has been described with reference to the drawings, the present invention is not limited to the embodiments shown in the drawings. Any substance can be used as long as it has the functions and effects described above. Further, the seismic isolation structure of the present invention is not limited to the above-described foundation structure, and can be constructed on any lower structure as long as an upper structure requiring seismic isolation is constructed. For example, when constructing an upper building on the middle floor of a building,
The structure up to the middle floor of the building can be a substructure. Furthermore, the seismic isolation structure of the present invention can use any material other than the laminated rubber as long as it can swingably support the upper building, and can be used in combination with the laminated rubber. Can also. In addition, the vertical wall provided in the lower structure may not be outside the vertical portion provided in the upper building as in the above-described embodiment, and the vertical wall of the lower structure provided inside, The water bag may be arranged in a space between the upper building and the vertical portion.

[0039]

According to the present invention, it is possible to effectively use the space between the upper building and the structure in the seismic isolation structure which cannot be effectively used in ordinary cases. Also, in inspection and maintenance, a space can be easily secured by draining water from the water bag. Furthermore, according to the present invention, since the upper building can be swingably supported by the water bag, the size of the laminated rubber conventionally used for the support can be reduced, or the number of the laminated rubber to be supported by the laminated rubber can be reduced. Can be reduced.

According to the present invention, there is provided a seismic isolation structure capable of sufficiently securing domestic water such as fire extinguishing water or drinking water even when a lifeline such as water supply or electricity is stopped due to a large earthquake or the like. can do.

[Brief description of the drawings]

FIG. 1 is a diagram showing a conventional seismic isolation structure.

FIG. 2 is a diagram showing a first embodiment of the seismic isolation structure of the present invention.

FIG. 3 is a diagram showing a seismic isolation structure according to a second embodiment of the present invention.

FIG. 4 is a sectional view of the seismic isolation structure of the present invention shown in FIG.
Sectional drawing cut | disconnected along.

FIG. 5 is a sectional view of the seismic isolation structure of the present invention shown in FIG.
Sectional drawing cut | disconnected along.

FIG. 6 is a diagram showing in detail a flow of water accompanying a swing at the time of an earthquake in the embodiment of the seismic isolation structure of the present invention shown in FIG. 5;

FIG. 7 is a sectional view showing another embodiment of the seismic isolation structure of the present invention.

FIG. 8 is a diagram showing in detail a flow of water accompanying a swing at the time of an earthquake in the embodiment of the seismic isolation structure of the present invention shown in FIG. 7;

FIG. 9 is a sectional view showing still another embodiment of the seismic isolation structure of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Ground 2 ... Foundation structure 3 ... Base part 4 ... High attenuation laminated rubber 4a ... Laminated rubber 5 ... Support part 6 ... Beam or floor slab 7 ... Upper building 8a, 8b ... Support structure 9 ... Damper 10 ... Vertical part 11 Horizontal parts 12, 12a, 12b, 12c, 12d, 12e, 12
f: Water bag 13: Heat collector 14: Line 15: Resistance means 16, 16a, 16b, 16c, 16d: Sliding means 17, 17a, 17b, 17c, 17d: Partition walls 18, 18a, 18b, 18c, 18d ... Tip portion 19, 19a, 19b, 19c, 19d ... Tip portion 20 ... Wall 21 ... Section F ... Inertial force

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yoshio Takeuchi 1-20-10 Toranomon, Minato-ku, Tokyo Nishimatsu Construction F-term (reference) 3J048 AA02 AC04 AC05 BA08 BB03 BE03 DA01 EA38

Claims (5)

[Claims] A lower structure having a flat surface and a vertical wall; an upper structure having a vertical portion and a horizontal portion swingably supported by the flat surface and extending to the flat surface; Storing and extendable water bag, the water bag, the flat surface, the vertical wall,
The seismic isolation structure is provided so as to be adjacent to a space defined by the vertical portion and the horizontal portion. 2. The base isolation structure according to claim 1, wherein the lower structure is a foundation structure, and the foundation structure includes the flat surface and the vertical wall. 3. The seismic isolation device according to claim 1, wherein a plurality of the water bags are provided, and the plurality of the water bags communicate with each other so that the stored water can be supplied or received. Construction. 4. The seismic isolation device according to claim 3, wherein the vertical wall of the lower structure includes a partition wall and sliding means for slidably holding the partition wall. Construction. 5. The water bag according to claim 1, wherein the resistance means is formed on an inner surface or provided in a communication passage communicating with the water bag.
4. The seismic isolation structure according to any one of 4.