JP2007085041A - Wide-area base isolation structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wide-area base isolation structure which intends to cost reduction and land effective utilization, and achieves high safety in case of an earthquake. <P>SOLUTION: According to the wide-area base isolation structure, a base isolation layer 14 which is formed by gathering rubber splines 14A made of a plurality of waste rubber chips into a layer, is arranged on the ground 12 such as a stratum, and a surface stratum 16 higher in rigidity than the base isolation layer 14 is laid on the base isolation layer 14, followed by building a plurality of buildings 18 such as houses on the surface stratum 16. In this manner the plurality of buildings 18 are built in an area as one block, and a road 20 such as a public road is formed around the block, for instance. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wide area seismic isolation structure capable of obtaining high safety in the event of an earthquake while reducing costs and effectively using land.

  2. Description of the Related Art Conventionally, seismic isolation devices are known that are arranged between a building and the ground that supports the building in order to reduce earthquake shaking. And as this seismic isolation device, for example, there is a laminated rubber such as a damping alloy on the inner side where rubber plates and laminated plates are laminated, or a sliding floor, etc. With this seismic isolation device placed between the two, the earthquake shake was reduced and it was made difficult to transmit the earthquake shake to the building side.

  However, conventional seismic isolation devices such as laminated rubber and sliding floors are expensive, so that such seismic isolation devices can be adopted for each house, and further, the foundation work for the seismic isolation equipment can be carried out for each house. Was costly. Furthermore, when a seismic isolation device is adopted for each house, as shown in FIG. 2, a space such as a groove 114 is required around the building so that the building 112 as a building can be shaken by the seismic isolation device 110. As a result, the land was not used effectively and the space efficiency was low.

On the other hand, when the seismic isolation device 110 is introduced for each door as in the prior art, when the adjacent building 112 does not introduce the seismic isolation device, the adjacent building 112 is shown in FIG. As shown, the fire F occurred or the adjacent building 112 collapsed and suffered secondary damage, and high safety was not necessarily obtained.
In consideration of the above facts, the present invention has an object to provide a wide area seismic isolation structure capable of obtaining high safety in the event of an earthquake while reducing costs and effectively using land.

  In the wide-area seismic isolation structure according to claim 1, at least one seismic isolation layer made of an elastically deformable elastic member is disposed between the plurality of buildings and the ground located below the plurality of buildings. Features.

The operation of the wide area seismic isolation structure according to claim 1 will be described below.
In the wide-area seismic isolation structure of this claim, a structure in which at least one seismic isolation layer made of an elastically deformable elastic member is disposed between a plurality of buildings and the ground located below the plurality of buildings. It has become.

  That is, according to this claim, instead of adopting conventional seismic isolation devices such as laminated rubber and sliding support floors for each door, at least a seismic isolation layer made of an elastic member is provided between a plurality of buildings and the ground. It has a one-layer structure. From this, it is possible to reduce the shaking caused by earthquakes of multiple buildings together with a single seismic isolation layer. This is possible with the seismic isolation layer. As a result, it is no longer necessary to individually install seismic isolation devices or perform special foundation work for each building in the compartment, and it has become possible to reduce earthquake shaking at low cost.

  Along with this, even if the force due to the shaking of the earthquake is applied to the wide area seismic isolation structure of this claim, each building moves as a whole, so the space for the building to shake is separated for each surrounding of each building. There is no need to provide it. For this reason, the land around each house can be used effectively, and the space efficiency is improved.

  In addition, in this claim, the seismic isolation device is not installed in each house to reduce the shaking, but the area of a certain area is reduced to reduce the shaking of the earthquake. It has become difficult to receive secondary damage from things, and high safety has been achieved.

  As described above, according to the wide-area seismic isolation structure of this claim, since at least one seismic isolation layer is disposed between the plurality of buildings and the ground located below the plurality of buildings, High safety has been achieved in the event of an earthquake, while reducing costs and making effective use of land.

The operation of the wide area seismic isolation structure according to claim 2 will be described below.
The present invention has the same configuration as that of the first embodiment and operates in the same manner. However, the elastic member of the seismic isolation layer is made of a plurality of rubber chips, and the plurality of rubber chips are collected to form a layer. It has a configuration in which the formed is a seismic isolation layer. In other words, in this claim, since the seismic isolation layer is formed by assembling rubber chips, the seismic isolation layer has a simple structure and can reduce earthquake shaking at a lower cost. It was.

The operation of the wide area seismic isolation structure according to claim 3 will be described below.
In this claim, it has the same configuration as in claim 1 and operates in the same manner, but the elastic member of the seismic isolation layer is a plurality of waste rubber chips, and these plurality of waste rubber chips are gathered and formed into a layer shape. Has a structure that is considered a seismic isolation layer.

  In other words, in this claim, since the seismic isolation layer is formed by gathering waste rubber chips rather than just rubber chips, the seismic isolation layer has a simple structure and reduces earthquake shaking at a lower cost. In addition to being able to do so, resources can now be used effectively.

The operation of the wide area seismic isolation structure according to claim 4 will be described below.
In this claim, it has the same configuration as in claim 1 and operates in the same way. However, a surface stratum whose rigidity is higher than that of the seismic isolation layer is arranged on the upper side of the seismic isolation layer, Each building is built. In other words, in the present claim, since the surface layer having high rigidity directly supports the plurality of buildings, the relative movement between the plurality of buildings is surely eliminated when an earthquake occurs. It is possible to achieve the above-mentioned action more reliably.

  As described above, according to the above-described configuration of the present invention, it is possible to provide a wide-area seismic isolation structure that can provide high safety in the event of an earthquake while achieving cost reduction and effective use of land. .

  A wide-area seismic isolation structure according to an embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1, the wide area seismic isolation structure 10 according to the present embodiment has a structure in which a seismic isolation layer 14 is disposed on an upper part of a ground 12 that is a stratum or the like. The seismic isolation layer 14 is an elastic member that can be elastically deformed, and is formed by collecting a plurality of rubber strips 14 </ b> A that are a plurality of waste rubber chips. The thickness dimension T of the seismic isolation layer 14 is, for example, about 20 cm to 2 m, and the size, such as the diameter of the rubber strip 14A, is, for example, about 3 mm to 40 mm.

  In addition, a surface formation 16 having higher rigidity than that of the seismic isolation layer 14 is present above the base isolation layer 14, and a building 18 that is a building such as a plurality of houses is provided above the surface formation 16. The structure is provided. Note that the surface formation 16 that can directly support the plurality of buildings 18 is formed of a material such as soil, metal, or reinforced concrete.

  As described above, in the present embodiment, a single seismic isolation layer 14 is arranged between the plurality of buildings 18 and the ground 12 positioned below the plurality of buildings 18. The plurality of buildings 18 are defined as one section, and for example, a road 20 such as a public road is provided around the one section.

Next, the effect | action of the wide area seismic isolation structure 10 which concerns on this Embodiment is demonstrated below.
In the wide-area seismic isolation structure 10 of the present embodiment, a single seismic isolation layer 14 composed of a plurality of rubber strips 14A, which are a plurality of waste rubber chips, and a surface formation 16 that can directly support a plurality of buildings 18 and the plurality of these layers. The structure is arranged between the ground 12 located below the building 18.

  That is, according to the present embodiment, instead of adopting a conventional seismic isolation device such as a laminated rubber or sliding support floor for each door, the seismic isolation layer 14 having a plurality of rubber strips 14A is provided. The structure is further arranged between the plurality of buildings 18 and the ground 12. Because of this, it is possible to reduce the shaking caused by earthquakes of multiple buildings 18 by using a single seismic isolation layer 14, which means that seismic isolation across a wide area is different from the case where seismic isolation devices are used for each house. This is possible with one seismic isolation layer 14. As a result, it is no longer necessary to individually install seismic isolation devices or perform special foundation work for each building in the compartment, and it has become possible to reduce earthquake shaking at low cost.

  Accordingly, as shown in FIG. 1, even if a force P caused by an earthquake shake is applied to the wide-area seismic isolation structure 10 of the present embodiment, each building 18 moves integrally, so the building shakes. It is no longer necessary to provide a space for each building. For this reason, the land around each house can be used effectively, and the space efficiency has improved.

  Furthermore, in this embodiment, the seismic isolation device is not installed in each house to reduce the shaking, but the area that is defined as a certain range of areas is combined to reduce the shaking of the earthquake. However, it is difficult to receive secondary damage from adjacent buildings, and high safety can be obtained. That is, even if a building that does not have a seismic isolation device is present in a section adjacent to the section having the wide-area seismic isolation structure 10 of the present embodiment, the adjacent section is separated with the road 20 in between. Because it is located, it becomes difficult to receive secondary damage.

  As described above, according to the wide-area seismic isolation structure 10 of the present embodiment, there is no relief between the surface strata 16 that can directly support the plurality of buildings 18 and the ground 12 that is located below the plurality of buildings 18. Because the seismic layer 14 is arranged, high safety can be obtained in the event of an earthquake while reducing costs and effectively using land.

  On the other hand, in the wide area seismic isolation structure 10 according to the present embodiment, the elastic member constituting the seismic isolation layer 14 is a plurality of rubber strips 14A which are a plurality of waste rubber chips, and the plurality of rubber strips 14A are collected. Thus, the seismic isolation layer 14 is formed in layers.

  In other words, in the present embodiment, since the seismic isolation layer 14 is formed by collecting the waste rubber chips, the seismic isolation layer 14 has a simple structure so that earthquake vibration can be reduced at a lower cost. In addition, it has become possible to use resources effectively. However, a simple rubber chip may be used as the rubber strip 14A.

  Furthermore, in the wide area seismic isolation structure 10 according to the present embodiment, the surface strata 16 that can support the plurality of buildings 18 are arranged on the upper side of the seismic isolation layer 14, and a plurality of buildings 18 are provided on the surface strata 16. Are built respectively. And since this surface formation 16 is made more rigid than the seismic isolation layer 14, in this embodiment, the surface formation 16 with high rigidity directly supports a plurality of buildings 18. In the event of an earthquake, the relative movement between the plurality of buildings 18 is more reliably eliminated, and the above action can be achieved more reliably.

  In the wide-area seismic isolation structure 10 according to the above embodiment, the seismic isolation layer 14 is one layer, but the seismic isolation layer 14 may be a plurality of layers. However, in this case, it is conceivable that the base isolation layers 14 and the surface formation 16 are alternately laminated to form the base isolation layers 14 in a plurality of layers. Moreover, in the wide area seismic isolation structure 10 according to the above embodiment, the elastic member constituting the seismic isolation layer 14 is a rubber chip such as a waste rubber chip, but other elastically deformable members may be employed. .

It is sectional drawing of the residential area which employ | adopted the wide area seismic isolation structure which concerns on one embodiment of this invention. It is sectional drawing of the residential area which employ | adopted the conventional seismic isolation apparatus.

Explanation of symbols

10 Wide-area seismic isolation structure 12 Ground 14 Seismic isolation layer 14A Rubber strip (waste rubber chip)
16 Surface strata 18 Building

Claims (4)

  A wide-area seismic isolation structure characterized in that at least one seismic isolation layer made of an elastically deformable elastic member is disposed between a plurality of buildings and the ground located below the plurality of buildings.   2. The wide area exemption according to claim 1, wherein the elastic member of the seismic isolation layer is a plurality of rubber chips, and the plurality of rubber chips are collected and formed into a layer shape. Seismic structure.   2. The wide-area seismic isolation structure according to claim 1, wherein the elastic member of the seismic isolation layer is a plurality of waste rubber chips, and the plurality of waste rubber chips are collected and formed into a layer shape. 2. The wide-area seismic isolation system according to claim 1, wherein a surface stratum whose rigidity is higher than that of the seismic isolation layer is disposed on an upper side of the seismic isolation layer, and a plurality of buildings are respectively built on the surface stratum. Construction.

Images