JPH0826688B2 - Seismic isolation support method for general housing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention will build a general house such as a single-family house, a multi-family house, or an apartment (including low-load structures such as warehouses, substations, and factory buildings). It relates to a method of supporting seismic isolation in the state of being close to the ground.

(Prior Art) A seismic isolation support device for isolating and supporting a relatively heavy load structure such as an office building or a bridge is generally disclosed in Japanese Patent Laid-Open No.
As disclosed in Japanese Patent No. 49609, it is composed of an elastic support that supports the structure so as to be displaceable in the horizontal direction and capable of returning, and an energy absorber that damps the horizontal motion of the structure.

When a low load structure such as a general house is seismically isolated and supported by such a structure, it is necessary to reduce the spring constant of the elastic support according to the load.

(Problems to be solved by the invention) Therefore, when a low load structure such as a general house is seismically isolated, conventionally, the elastic support has a small cross-sectional area. However, there is a problem in that it becomes disadvantageous in terms of design, such as a large size.

Also, in the case of supporting a low load structure such as a general house in a seismic isolation manner, it is necessary to dispose elastic supports and energy absorbers at the locations where the columns of the house are arranged. Therefore, the number of elastic supports is large. Which is disadvantageous in design as above,
There was a problem that the arrangement structure became complicated and the construction work was troublesome.

Furthermore, when a low load structure such as a general house is to be seismically isolated, if a general house is mounted and fixed on a seismic isolation support device, as with high load structures such as office buildings and bridges, it will not When the external force of the above is applied, there is a disadvantage in preventing the fall of a general house.

The present invention has been devised in view of the above circumstances, and an object of the present invention is to design a general house for seismic isolation support in a state of being close to the ground to be constructed formed on the ground surface, and (EN) It is an object to provide a seismic isolation support method for a general house, which is advantageous in construction and is also advantageous in preventing a fall due to an external force such as wind.

(Means for Solving the Problems) The configuration of the present invention for achieving the above-mentioned object will be described with reference to FIGS. 1 and 2 corresponding to the embodiments.

The present invention provides an area larger than the building area of the general house 1 and smaller than the site area when the general house 1 is seismically isolated and supported in the state of being close to the ground 5 formed on the ground surface G to be built. Further, the artificial ground 31 having a predetermined strength and weight is provided, and the artificial ground 31 is arranged on the ground 5 in a state where the artificial ground 31 is close to the artificial ground 31, and the artificial ground 31 is horizontally arranged between the ground 5 and the artificial ground 31. Means 17 for displaceably supporting, means 17 for biasing the artificial ground 31 in the direction of returning the artificial ground 31 to its original position when the artificial ground 31 is displaced in the horizontal direction, and means for damping the horizontal motion of the artificial ground 31. The seismic isolation support device 15 consisting of 19 is arranged, the general house 1 is built on the artificial ground 31, and the artificial ground 31 is provided with a balance weight 35 so as to balance the weight on the artificial ground 31. It is characterized by being provided.

(Operation) By providing the artificial ground 31, the load on the structure side supported by the seismic isolation support device 15 increases, which is advantageous in the design of the seismic isolation support device 15 and also advantageous in preventing overturning of the general house 1. .

Further, since the seismic isolation support device 15 is provided between the ground 5 and the artificial ground 31, the structural members 17, 19 of the seismic isolation support device can be disposed regardless of the structure shape such as the arrangement structure of the pillars. Therefore, the number of constituent members 17, 19 of the seismic isolation support device 15 can be minimized, and the arrangement structure thereof can be simplified. In the design of the seismic isolation support device 15,
It is also advantageous in construction.

Further, even if the general house 1 is constructed unevenly on the artificial ground 31, by providing the balance weight 35,
The load on the structure side can be balanced in a plane.

In addition, as shown in FIG. 3, when applied to a plurality of adjacent low load structures 53, 55, 57, artificial ground common to all
By providing 51, the load on the structure side becomes larger, which is more advantageous in designing and constructing the seismic isolation support device 59.

Further, as shown in FIG. 1, a vibration isolation device 37 can be easily provided between the ground 5 and the artificial ground 31, and the comfort of living and the like can be improved.

(Example) An example in which the present invention is applied to a general house will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic plan view of a general house according to the first embodiment,
FIG. 2 shows an enlarged sectional view taken along line II-II of FIG.

Reference numeral 1 is a house and 3 is a site. First, a ground 5 having an area larger than the building area of the house 1 and a height lower than a ground surface G around the site is formed.

 Next, a plurality of foundations 7 are set and fixed on the ground 5.

In the embodiment, the foundations 7 are connected to each other by the underground beams 13,
In the figure, 14 indicates a split chestnut.

 Next, the seismic isolation support device 15 is installed on the foundation 7.

The seismic isolation support device 15 includes an elastic support 17 that supports a structure so that the structure can be displaced in the horizontal direction, and that urges the structure in a direction to return to the original position when the structure is displaced in the horizontal direction, and the structure. And an energy absorber 19 for damping the horizontal movement of the. That is, in the embodiment, the elastic support member 17 has a means for supporting the structure so as to be displaceable in the horizontal direction, and a means for urging the structure to return to the original position when the structure is displaced in the horizontal direction. Also serves as.

The elastic support body 17 is a laminated body in which a thin-walled steel reinforcing plate 21 and a thin-walled rubber plate 23 are superposed and integrally molded, and thick mounting plates 25 are provided above and below the laminated body.

The energy absorber 19 is made of a lead cylinder, and has an elastic support 17
A hole is vertically formed in the inside of and is inserted into this hole.

Next, the artificial ground 31 is placed and fixed on the seismic isolation support device 15. In the embodiment, the elastic supports 17 provided with the energy absorbers 19 vertically are arranged at the four corners of the artificial ground 31.

The artificial ground 31 has a predetermined weight and is formed of a member having a strength capable of supporting the house 1. As this member, for example, a steel structural plate, a fiber-reinforced concrete structural plate,
Prestressed concrete structure boards and the like can be mentioned.

In the embodiment, the height of the artificial ground 31 is made substantially equal to the height of the ground surface G. The height of the artificial ground 31 may be lower or higher than the ground surface G.

The size of the artificial ground 31 is larger than the building area and smaller than the site area, but the larger the weight, the more preferable.

Although the artificial ground 31 has a rectangular shape in a plan view in the embodiment, it can be formed in an arbitrary shape corresponding to the shape of the site.
A gap 33 is provided between the green portion of the artificial ground 31 and the edge of the ground surface G, which allows the artificial ground 31 to move in the horizontal direction. The gap 33 may be covered by an appropriate means.

Next, the house 1 is built on the artificial ground 31. In this case, the house 1 may be made of wood, steel, or reinforced concrete.

In the embodiment, in order to construct the house 1 by biasing it to one side of the artificial ground 31, the balance weight 35 is arranged at a position on the artificial ground 31 opposite to the house 1, and the structure side is supported by the seismic isolation support device 15. The weight is balanced on the plane.

Further, in the embodiment, the vibration isolation device 37 is provided between the ground 5 and the artificial ground 31 so as to damp vertical micro-vibration generated when a car, a large vehicle, etc. pass by. The anti-vibration device 37 includes a sliding plate 38 arranged on the ground 5 and the sliding plate 38.
A viscous body slidably arranged on the 38 through the sliding plate 39.
It is composed of a cylindrical case 41 in which 40 is enclosed, and a columnar resistor 42 that is vertically installed from the artificial ground 31 side and inserted into the case 41 via a guide member, and is damped by the viscous resistance of the viscous body 40. It exerts its function.

In this embodiment, since the seismic isolation support is performed in the state where the house 1 is close to the ground on which the housing 1 is to be constructed as described above, the seismic isolation support device is used.
The load supported by 15 is larger than that in the case of a single house, and therefore, when designing the elastic support 17, its diameter can be increased or its height can be suppressed to a low level. Be advantageous.

Moreover, since it is not necessary to dispose the elastic support body 17 and the energy absorber 19 under the support of the house as in the conventional case, the elastic support body 17 and the energy absorber 19 can be arranged regardless of the shape of the house.
Therefore, the number of elastic supports 17 and energy absorbers 19 can be reduced to the minimum, which is advantageous in the design of the seismic isolation support device 15 as described above. In addition, the elastic support 17 and the energy absorber 19
The arrangement structure can be simplified, which is advantageous in construction.

Further, the load supported by the seismic isolation support device 15 is the weight of the house plus the weight of the artificial ground 31, and since the artificial ground 31 having a further weight is located at a low height, it is similar to the high load structure. Compared to the case where a general house is seismically isolated and supported, it is more advantageous in preventing falls due to external forces such as wind.

Further, even when the house 1 is constructed on the artificial ground 31 in a biased manner as in the embodiment, the balance weight 35 can be provided to balance the weight on the structure side. As the balance weight 35, a heavy material such as lead may be embedded in the artificial ground 31, or a garden stone, a pond or the like may be installed.

Further, the vibration isolator 37 can be easily provided between the ground 5 and the artificial ground 31, and the living comfort and the like can be improved.

Further, even if partial ground subsidence occurs, it is possible to easily cope with it by interposing a spacer between the elastic support 17 and the artificial ground 31.

Further, the space between the ground 5 and the artificial ground 31 can be used as an article storage space, and the ground 5 can be partially dug down to provide a garage or the like under the artificial ground 31.

The artificial ground 31 can also be used as a support base for the floor material of the house 1.

In addition, if the weight ratio of the artificial ground 31 and the building 1 is set to 2: 1,
No matter where you build the building 1 on the artificial ground 31, there is no effect on the seismic isolation support, and if the building 1 is a general house, using a prestressed concrete structural plate as the artificial ground 31 will make the artificial ground 31 and the building It is easy to set the weight ratio of 1 to 2: 1.

 Next, a second embodiment will be described with reference to FIG.

FIG. 3 shows a schematic plan view of a general house according to the second embodiment.

In this example, three houses 5 on a single artificial ground 51
Unlike the first embodiment in that 3,55,57 are constructed,
In the figure, 59 is a seismic isolation support device, and 61 is an elastic support body in which energy absorbers are provided vertically as in the above-mentioned embodiment.

In this way, if a single artificial ground 51 is provided over a plurality of sites 63, 65, 67 and houses 53, 55, 57 are respectively built on this artificial ground 51, the load supported by the seismic isolation support device 59 will be even greater. It becomes larger, which is more advantageous in designing and constructing the seismic isolation support device 59, and is also advantageous in preventing a fall.

In the present invention, the structure of the seismic isolation support device is not limited to the structure of the embodiment, and is arbitrary, for example, a high damping laminated rubber, a combination of a laminated rubber and a steel rod hysteresis damper, or a laminated rubber. And an oil cylinder, or a combination of a ball bearing, a coil spring and a viscous shear damper.

(Effects of the Invention) As is apparent from the above description, according to the seismic isolation support method of the present invention, when performing seismic isolation support for a general house in a state of being brought close to the ground to be constructed formed on the ground surface ,
This is advantageous in design and construction, and also advantageous in preventing a fall due to the external force of wind.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a general house according to the first embodiment, FIG.
The drawing is an enlarged sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a schematic plan view of a general house according to the second embodiment. In the figure, 1,53,55,57 are houses, 3,63,65,67 are sites, 5 is ground, 15,59 are seismic isolation supports, 17,61 are elastic supports, and 19 is an energy absorber. , 31 and 51 are artificial grounds, and 35 is a balance weight.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-63-180740 (JP, A) JP-A-1-169033 (JP, A) JP-A-1-169022 (JP, A) Actual development Sho-63- 81157 (JP, U)

Claims (3)

[Claims] 1. When seismically isolating and supporting a general house in a state in which it is close to the ground formed on the ground surface, the area is larger than the building area of the general house and smaller than the site area, and a predetermined size is provided. An artificial ground having the strength and weight of the above is provided, and the artificial ground is arranged on the ground in a state of being brought close to each other, and means for supporting the artificial ground in a horizontally displaceable manner between the ground and the artificial ground; Means for urging the artificial ground in the direction of returning to the original position when the ground is displaced in the horizontal direction,
A seismic isolation support device consisting of means for attenuating the horizontal motion of the artificial ground is provided, and a general house is built on this artificial ground, and the artificial ground is designed to balance the weight on the artificial ground. A seismic isolation support method for general houses, characterized in that a balance weight is provided on the. 2. A single artificial ground is arranged on the ground of a plurality of adjoining general houses, and the plurality of adjoining general houses are respectively constructed on this single artificial ground. Seismic isolation support method for general housing in Japan. 3. The seismic isolation support method for a general house according to claim 1, wherein a vibration isolation device for damping vertical vibrations is provided between the ground and the artificial ground.