JP2002206245A - Footing structure for reducing vibration of house - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a footing structure for reducing vibrations of a house, which is suitable for a structure such as a detached house and capable of being inexpensively provided. SOLUTION: This footing structure comprises a ground-side concrete footing 30, which is formed in ground 20 whereon the house 10 is constructed, a house- side concrete footing 40, which is constituted in the lower part of the house 10 and placed on the footing 30, and plural friction reducing mechanisms 50, which are provided between the footings 30 and 40. The mechanism 50 comprises a plate material 52, which is provided on the footing 30 and has a prescribed area, and a sliding member, which is provided at a spot, corresponding to the plate material 52, of the footing 40 so as to be capable of protruding from/ retracting into the lower surface of the footing 40 and can slide on the plate material 52 with footing 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing seismic reduction base structure for reducing horizontal vibration during an earthquake and preventing the destruction of houses, and more particularly to an inexpensive housing seismic base suitable for detached houses. Regarding the structure.

[0002]

2. Description of the Related Art Heretofore, seismic isolation devices have been known as means for preventing the destruction of buildings due to earthquakes.
For example, as a seismic isolation device for a large building such as a building, a laminated rubber formed by laminating a disk-shaped iron plate and rubber is known. However, such a laminated rubber is suitable for a structure having a large weight, but is not suitable for a structure that is lighter than a building such as a detached house.

[0003] Therefore, as a seismic isolation device for a detached house, a device using a ball bearing is provided. This is configured by providing a bearing with a ball bearing between a house and its foundation. A plurality of ball bearing bearings are provided. The base portion is provided with a saucer for receiving a rigid sphere in a ball bearing, and the upper surface of the saucer is usually formed in a concave shape.

[0004]

However, although the sphere has rigidity, since it is supported at one point, damage such as chipping is likely to occur. In order to prevent this, it is necessary to reduce the load per bearing part by the ball bearing. This means that the number of bearings by ball bearings increases.

On the other hand, as another means for preventing the destruction of a building due to an earthquake, a vibration control device is known. As an example, there is one that utilizes the plastic flow resistance of lead housed in a cylinder. In this method, lead in a cylinder undergoes plastic deformation due to relative movement of a rod having a projection that moves in lead in the cylinder, and absorbs vibration energy. A plurality of such vibration control devices are required even in the case of a detached house.

[0006] In any case, the seismic isolation device and the vibration control device having the above-described structure are expensive, and cause an increase in house prices.

It is an object of the present invention to provide a base structure for housing seismic reduction suitable for a structure such as a detached house and which can be provided at a low cost.

[0008]

According to the present invention, there is provided a base structure for seismic reduction of a house, comprising a ground-side foundation formed on the ground on which a house is constructed, and a lower part of the house, which is placed on the ground-side foundation. The ground foundation, and at least one friction reduction mechanism provided between the ground foundation and the housing foundation, wherein the friction reduction mechanism reduces a predetermined area provided on the ground foundation. And a sliding member provided at a position corresponding to the plate material on the house side foundation so as to be able to protrude and retract from a lower surface of the house side foundation and slidable on the plate material together with the house side foundation. And

[0009] In a first aspect of the present base structure for seismic vibration reduction, the sliding member is a columnar body and is screwed around the cylindrical member. A block body having a detachable through-threaded female screw hole of the columnar body is fixed, and the flat lower end of the columnar body is slightly projected from the lower surface of the house side foundation to be slidable on the plate material. I have.

In the first aspect, the columnar body may be a metal such as steel, a ceramic, or a resin body, or a resin material for reducing friction may be fixed to at least a part of a lower surface thereof or a paint may be applied. The plate material is a metal plate such as a steel plate, a ceramic plate, a resin plate, a stone plate, a concrete plate, or a resin material for reducing friction is applied to at least a part of an upper surface thereof or a paint is applied. Things.

In the first aspect, the columnar body may be made of a metal such as steel, a ceramic, or a resin body, or the resin material for reducing friction may be fixed or coated on the entire lower surface thereof. When the plate material is a metal plate, a ceramic plate, a resin plate, a stone plate, or a concrete plate, or a resin material for fixing the friction reducing resin material over the entire surface of the upper surface thereof or a coating material, A groove for adjusting the frictional force may be formed on one of these contact surfaces.

[0012] In a second aspect of the substructure for seismic reduction of a house, the sliding member includes a columnar body threaded around and a sliding body combined with a lower surface of the columnar body. At a location corresponding to the plate material on the house-side foundation, a block body having a detachable through-threaded female screw hole of the columnar body is fixed in a state in which the sliding body is accommodated,
The flat lower end of the sliding body is slightly projected from the lower surface of the house-side foundation by the columnar body so as to be slidable on the plate material.

In the second aspect, the columnar body is any one of a metal such as steel, ceramic, and resin, and the sliding body is any one of a metal such as steel, ceramic, resin, stone, and concrete. Or a resin material for reducing friction is fixed to at least a part of their lower surfaces or a paint is applied, and the plate material is any one of a metal plate such as a steel plate, a ceramic plate, a resin plate, a stone plate, and a concrete plate. Alternatively, a resin material for reducing friction is fixed to at least a part of the upper surface thereof or a paint is applied.

Further, in the second aspect, the block body has a diameter larger than that of the columnar body and is fixed to the house-side foundation, and a female screw which can be screwed into the columnar body. A nut body having a hole as the through-thread hole,
The nut body has two diametrically fixed support rods on the outer peripheral side thereof, and the two support rods are bridged over two diametrically provided holes of the cylindrical body. The nut body may be made detachable from the tubular body.

[0015] In the second aspect, the columnar body is any one of a metal such as a steel, a ceramic, and a resin, and the sliding body is a metal such as a steel, a ceramic, a resin, a stone, and the like.
Any of concrete, or at least a part of the lower surface thereof, has a resin material for friction reduction fixed or coated with a paint, and the plate material is a metal plate such as a steel plate, a ceramic plate, a resin plate, a stone plate, a concrete plate. Or a resin material for reducing friction is fixed to at least a part of the upper surface thereof or a paint is applied.

In the second aspect, at least one ball body may be interposed between the columnar body and the sliding body.

In the second aspect, a rubber plate for vibration reduction may be interposed between the cylindrical body and the sliding body.

In the second aspect, at least one ball body and a support plate for supporting the ball body may be interposed between the columnar body and the rubber plate for vibration reduction. good.

In the second aspect, the sliding body may be a metal such as steel, a ceramic, a resin body, a stone, or concrete, or a resin material for reducing friction may be fixed to the entire lower surface thereof or a paint may be applied. The plate material is a metal plate such as a steel plate, a ceramic plate, a resin plate, a stone plate, a concrete plate, or a resin material for friction reduction is applied to the entire upper surface thereof or a paint is applied. In this case, a groove for adjusting the frictional force may be formed on one of these contact surfaces.

The above-mentioned sliding member includes a cylindrical body threaded around and a sliding body combined with a lower surface side of the cylindrical body, wherein the sliding body has at least one curved surface that is convexly upward and downward respectively. And a holding plate for holding the oscillating body from above, and the column-shaped body can be screwed into the housing-side foundation at a location corresponding to the plate material, and further accommodates the slidable body. A block body having a penetrating female screw hole is fixed, and the rocking body is slightly protruded from the lower surface of the house-side foundation by the columnar body so that it can roll and slide on the plate material. A base structure for seismic reduction of houses.

[0021] In a third mode of the basic structure for seismic reduction of a house, the sliding member includes a columnar body threaded around and a sliding body combined with a lower surface side of the columnar body.
The sliding body includes a plurality of spheres and a holding plate that holds the plurality of spheres from above, and at a position corresponding to the plate material on the housing-side foundation, the cylindrical body can be screwed through. A block body having a female screw hole is fixed in a state in which the sliding body is accommodated, and the plurality of spheres can be slightly protruded from the lower surface of the house-side foundation by the columnar body and can roll on the plate material I have to.

In the third aspect, the columnar body is any one of a metal such as a steel material, a ceramic, and a resin body, and the oscillator is a metal such as a steel material, a ceramic, a resin body, or the like.
Any of stone, concrete, or at least a part of the lower surface thereof is a resin material for friction reduction fixed or coated with paint, the plate material is a metal plate such as a steel plate,
Any one of a ceramic plate, a resin plate, a stone plate, a concrete plate, or at least a part of the upper surface thereof is fixed with a resin material for reducing friction or coated with a paint.

In the third aspect, the columnar body is any one of a metal such as a steel, a ceramic, and a resin, the sphere is made of a metal, and the plate is a metal plate such as a steel plate or a ceramic. Any of a plate, a resin plate, a stone plate, a concrete plate, or at least a part of the upper surface thereof, has a resin material for friction reduction fixed or coated with a paint.

In the third aspect, at least one ball may be interposed between the columnar body and the holding plate.

In the third aspect, a rubber plate for vibration reduction may be interposed between the columnar body and the holding plate.

In the third aspect, at least one ball body and a support plate for supporting the ball body are interposed between the columnar body and the rubber plate for vibration reduction. Is also good.

In any of the embodiments, an anti-vibration rubber plate may be interposed between the plate and the ground-side foundation.

In any of the embodiments, by setting the friction coefficient of the friction reducing mechanism in the range of 0.05 to 0.3, when the ground-side foundation horizontally vibrates due to an earthquake, the horizontal vibration is reduced. The vibration is reduced and transmitted to the house-side foundation, and is vibrated within a predetermined maximum half amplitude.

In any of the embodiments, the friction reducing mechanism has N sets (N is a positive integer of 2 or more), of which n
The set (n is a positive integer of 1 or more) is used as the friction reducing mechanism according to any one of claims 2 to 13, and the remaining (N-n) sets are used as the friction reducing mechanism according to claim 14. The adjustment of the friction coefficient may be performed.

In any aspect, at least one amplitude limiting mechanism is provided between the ground-side foundation and the house-side foundation, one of which is fixed to the ground-side foundation and the other is fixed to the house-side foundation. May be. In this case, the amplitude limiting mechanism provides a through-hole in the house-side foundation, fixes a lower end of a steel rod having a smaller diameter than the through-hole to the ground-side foundation through the through-hole, and surrounds a rubber body therearound. A member larger than the through hole is attached to the upper end side so as to be slidable with respect to the upper surface of the house-side foundation, and the member is configured to prevent the member from being displaced upward from the upper surface of the house-side foundation. You.

The above-mentioned amplitude limiting mechanism also has a through hole in the house-side foundation, a first plate member fixed to the ground-side foundation at a lower end side, and the housing-side foundation at an upper end side. And a columnar rubber body having a second plate member larger than the through hole fixed to the through hole may be provided through the through hole.

The above-mentioned amplitude limiting mechanism further includes a first plate member fixed to the ground-side foundation at a lower end side, with a through-hole provided in the housing-side foundation, and a housing-side foundation at the upper end side. A plurality of substantially spiral-shaped steel rods having a second plate member larger than the through hole fixed to the through hole may be installed through the through hole.

In any aspect, the ground-side foundation is a solid foundation, a cloth foundation, or a combination thereof, having a flat portion on the upper surface, and the housing-side foundation corresponds to the flat portion of the ground-side foundation. It is a solid foundation, a cloth foundation, or a combination of them, which has a flat part at the place where it does.

In any of the embodiments, the ground-side foundation and the house-side foundation may each be integrally formed with an underground beam and a ground beam as a reinforcing portion on at least one of them.

In any aspect, the ground-side foundation is formed so as to be larger in area than the housing-side foundation, and the ground-side foundation outside the housing-side foundation has the housing-side foundation in an earthquake. It is preferable to provide jig fixing portions at a plurality of locations to which a jig for returning the house-side foundation to its original position when the housing-side foundation is displaced with respect to the ground-side foundation due to accompanying vibration.

[0036]

BEST MODE FOR CARRYING OUT THE INVENTION The base structure for seismic reduction of houses according to the present invention is designed to reduce horizontal vibrations expected at the time of an earthquake in a form different from the conventional concept of seismic isolation devices and seismic control devices. There is a characteristic in that. In particular, according to the housing seismic reduction base structure according to the present invention, the acceleration (Ga
When l) exceeds a predetermined value, the housing part can be caused to horizontally vibrate after being subjected to seismic reduction.

Hereinafter, a first embodiment of the present invention will be described. Referring to FIG. 1, a base structure for house seismic reduction according to the first embodiment includes a ground 20 on which a house 10 is built.
Ground-side concrete foundation 30 formed in
Ground-side concrete foundation 3
0, the concrete foundation 40 on the housing side, the concrete foundation 30 on the ground side, and the concrete foundation 40 on the housing side
And a plurality of friction reducing mechanisms 50 (only two are shown in FIG. 1) provided between them. When the ground-side concrete foundation 30 horizontally vibrates due to the earthquake, the friction reducing mechanism 50 reduces and transmits the horizontal vibration to the house-side concrete foundation 40, and furthermore, a predetermined maximum single amplitude (for example, 35 cm). It is configured to vibrate within the range. The friction reducing mechanism 50 will be described later in detail.

As for the ground-side concrete foundation 30, in addition to the solid foundation as shown in FIG. 1, as shown in FIG. 2 (a), the concrete foundation having a predetermined thickness (for example, 20 cm) is reinforced below the solid foundation. Multiple underground beams 30-
2 and, as shown in FIG. 2 (b), an understory beam 30-2 is provided in a girder shape below a solid foundation made of concrete of a predetermined thickness (for example, 20 cm). However, the structure does not matter as long as a part of the upper surface has a flat surface and satisfies the strength required as a foundation on the ground side. For example, a cloth foundation as described later or a combination of a cloth foundation and a solid foundation may be used. It is preferable that a reinforcing bar is incorporated in the solid foundation portion, and particularly a double reinforcing bar is incorporated in the underground beam.

With respect to the concrete foundation 40 on the house side, as shown in FIG.
m) A cloth foundation 40-1 is provided around the upper surface side of a solid foundation made of concrete, and a cross-girder ground beam 40-2 is further provided as a reinforcement in the cloth foundation 40-1. Also, as shown in FIG. 3 (b), there is no solid foundation, the cloth foundation 40-1 and the ground beam 40-2, or a hole 40-3 is formed in the solid foundation shown in FIG. 3 (c). May be provided. In other words, the structure of the house-side concrete foundation 40 is not limited as long as it has a flat surface on a part of the lower surface and satisfies the strength required for the house-side foundation. However, it is necessary that at least a part of the lower surface side flat surface of the house-side concrete foundation 40 matches with the upper surface side flat surface of the ground side concrete foundation 30. This is the ground side concrete foundation 30
This is because it is necessary to provide the friction reducing mechanism 50 between the upper surface side flat surface portion and the lower surface side flat surface portion of the housing side concrete foundation 40. In the housing-side concrete foundation 40 as well, it is preferable that a double reinforcing bar is incorporated into the cloth foundation 40-1 and the reinforcing portion 40-2 as well as the solid foundation.

The concrete foundation 40 on the house side is
Is formed in a lower portion of the housing 10, and after the housing side concrete foundation 40 is formed, the housing 10 is formed thereon.

Although several examples have been given for the ground-side concrete foundation 30 and the house-side concrete foundation 40, they need not necessarily be made of concrete. For example, in the case of a foundation as shown in FIG. 3 (b), a steel material, particularly a material such as an H-section steel, may be used. For example,
When an H-section steel is used, two parallel plate portions are arranged so that one of them is on the lower side and the other is on the upper side. Use of such a material can be similarly applied to an embodiment described later. Further, both the ground-side concrete foundation 30 and the house-side concrete foundation 40 are not limited to rectangular shapes as shown in FIGS. 2 and 3, but are made according to the planar shape of the house.

Referring to FIG. 4, a description will be given of a friction reducing mechanism 50 according to the first embodiment of the present invention. A recess 30 a is provided in the ground-side concrete foundation 30, and a plate 52 is provided in the recess 30 a via a rubber plate 51 for vibration reduction. The rubber plate 51 for vibration reduction absorbs vibration in the vertical direction, and various types are known, such as a laminated body of rubber and a steel plate. It is preferable that the upper surface of the plate member 52 is flush with the upper surface of the ground-side concrete foundation 30. The plate material 52 may be a steel material, in particular, a plate made of a casting, a ceramic plate, a resin plate having a large mechanical strength, for example, a resin plate such as a glass epoxy resin, a stone plate, or a material having excellent mechanical strength such as a concrete plate. Is polished to obtain a desired coefficient of friction. The reason why the casting is preferable is that even if rust is generated, it hardly penetrates into the inside. In some cases, a synthetic resin (eg, tetrafluoroethylene, nylon) or a thermosetting resin is applied to at least a part of the upper surface of the above material to obtain a desired coefficient of friction, or a paint is applied. But it is good. The term “application and fixation” used herein includes a case where a resin is applied and then solidified, such as a thermosetting resin, and a case where a resin film or a resin plate is bonded with an adhesive. Further, a reinforcing material, a lubricant, or the like may be mixed with the synthetic resin or the thermosetting resin. In addition, the size of the plate material 52 is, for example, 50 mm in diameter in consideration of the maximum half amplitude described above.
cm. The rubber plate 51 for vibration reduction may not be provided, and this also applies to all embodiments described later.

The housing-side concrete foundation 40 corresponding to the plate 52 is provided with a through hole 40a. Then, a block body 53 is fixed to a lower side of the through hole 40a. The block body 53 has a penetrating female screw hole 53a at its center, and is provided here so that the lower surface thereof is flush with the lower surface of the housing-side concrete foundation 40. Female screw hole 53a
A cylindrical screw body 54 (sliding member) threaded around is screwed into. The screw body 54 has a groove 54a for rotation on the upper surface side, and can be rotated by a jig through the through hole 40a from above the housing-side concrete foundation 40. The location of the through hole 40a is preferably a solid foundation portion of the housing-side concrete foundation 40.
When the solid foundation is not provided as shown in (b), it can be realized by forming it on the cloth foundation or by fixing a reinforcing plate to the cloth foundation and forming a through hole in this reinforcing plate.

Since the material of the block body 53 needs to be threaded, for example, a metal, particularly a steel material, a ceramic body, a resin body such as a reinforced plastic, or the like is preferable. Screw body 54
Also need to be threaded, so for example metal, especially steel,
A resin body such as ceramic or reinforced plastic is preferable. The lower end surface of the screw body 54 is polished so as to be flat. This is to set the coefficient of friction between the plate member 52 and a desired value. Accordingly, the screw body 54 may be formed by applying a synthetic resin (for example, ethylene tetrafluoride or nylon) or a thermosetting resin to at least a part of the lower surface thereof to obtain a desired coefficient of friction, or by applying a paint. good. As described above, a synthetic resin or a thermosetting resin in this case may be mixed with a reinforcing material or a lubricant. The size, particularly the diameter, of the screw body 54 is set to, for example, about 10 to 20 cm in consideration of the maximum half amplitude described above. In any case, each of the above members may be a material that can obtain a desired mechanical strength, and the ceramic is particularly preferably a metal ceramic. This applies to all of the following embodiments.

The friction reducing mechanism 50 according to the present embodiment is incorporated as follows, and operates as follows when an earthquake occurs. First, a ground-side concrete foundation 30 is formed on a construction site of a detached house. Ground side concrete foundation 3
When the concrete of No. 0 is hardened, lay something like a vinyl sheet on it,
make. This involves forming the formwork on the ground-side concrete foundation 30 and incorporating rebars in a known manner,
It is formed by pouring concrete into it. At this time, the block body 53 is assembled in the house side concrete foundation 40 in advance, and the through hole 40a is also formed. The reason for laying such a vinyl sheet is to prevent the concrete of the housing-side concrete foundation 40 from sticking to the ground-side concrete foundation 30, but the area corresponding to the plate 52 is cut out in advance. Is preferred. When the concrete of the housing-side concrete foundation 40 has hardened, the formwork is removed. At this time, the vinyl sheet may be removed.

Subsequently, the screw body 54 is inserted into the through female screw hole 53a.
Screw. Then, the lower end side of the screw body 54 is made to protrude slightly (about several mm) from the lower surface of the housing-side concrete foundation 40. This is performed for all of the plurality of friction reducing mechanisms 50. As a result, the house-side concrete foundation 40 and the house built thereon are combined with the house-side concrete foundation 4.
0 is supported by the plurality of screw bodies 54 in a state where the lower surface slightly rises from the upper surface of the ground-side concrete foundation 30. Of course, the housing-side concrete foundation 40 is formed at another place, for example, a place adjacent to the ground-side concrete foundation 30, and the ground-side concrete foundation 3 is formed by a crane or the like.
It may be arranged on 0.

As described above, the ground-side concrete foundation 3
If the friction-reducing mechanism 50 is interposed between the ground-side concrete foundation 40 and the ground-side concrete foundation 30, if the ground-side concrete foundation 30 sways due to the earthquake, the housing-side concrete foundation 40 is also reduced if the swing is extremely small. Shake slightly. This is because there is static friction between the plate member 52 and the screw body 54. On the other hand, even if the plate member 52 vibrates horizontally within a certain range of the horizontal swing, the screw body 54 slides on the plate member 52, so that the house side concrete foundation 40 hardly shakes. However, when the acceleration exceeds a predetermined value, the amplitude of the roll increases, and the housing-side concrete foundation 4
0 begins to roll. However, since slippage occurs between the plate member 52 and the screw body 54, this rolling is reduced and transmitted to the house-side concrete foundation 40. Then, by selecting the friction coefficient in the friction reducing mechanism 50 based on the total weight of the ground-side concrete foundation 30 and the housing part, the housing-side part can be configured to vibrate within a predetermined maximum single amplitude. . To realize this, the preferable range of the static friction coefficient in the friction reducing mechanism 50 is 0.1.
05 to 0.3. Note that the dynamic friction coefficient is usually several tens of percent smaller than the static friction coefficient.

The feature of the friction reducing mechanism 50 according to the present embodiment is as follows.
The screw body 54 is detachable from the block body 53. This is because when the lower end of the screw member 54 is damaged, or when dust or the like accumulates on the upper surface of the plate member 52 and slippage is deteriorated, the screw member 54 is replaced or the screw member 54 is removed to remove the upper surface of the plate member 52. This is because the effect of cleaning can be obtained.

By the way, in the foundation structure as shown in FIG. 4, when horizontal vibration occurs due to the earthquake, the housing-side concrete foundation 40 and the ground-side concrete foundation 3 together with the housing part are provided.
There is a case where a positional shift occurs with respect to 0. Such a displacement can be manually recovered by using a special jig, for example, a hydraulic jack.

FIGS. 5 and 6 show a basic structure in consideration of the above restoration work. Ground side concrete foundation 30
Is larger (for example, about 35 cm) than the housing-side concrete foundation 40 in that area. The ground-side concrete foundation 30 outside the house-side concrete foundation 40 is provided with jig fixing holes 31 at a plurality of locations so that special jigs can be attached. The jig fixing hole 31 is provided in the ground-side concrete foundation 30.
Formed when concrete is poured. For example, when pouring the concrete into the formwork, a PVC pipe may be arranged at a location corresponding to the jig fixing hole 31, and the concrete may be removed when the concrete hardens.

A rod for placing a hydraulic jack is inserted into the jig fixing hole 31. For this reason, when the hydraulic jack is used, a large reaction force acts around the jig fixing hole 31 through the rod-shaped body, and the foundation may be damaged. In consideration of this, when concrete is poured into the ground-side concrete foundation 30, a reinforcing portion using a spiral reinforcing bar 32 called a void reinforcing bar is embedded around the jig fixing hole 31. That is, a spiral reinforcing bar 32 is embedded around the jig fixing hole 31. Further, a rectangular (or circular) reinforcing bar 34 is formed by using the reinforcing bar 33 of the ground-side concrete foundation 30 and the jig fixing hole 31 is used.
Embed around. Of course, the reinforcing bar 34 is fixed to the reinforcing bar 33 by welding or the like. In this manner, the mechanical strength around the jig fixing hole 31 can be improved.

FIG. 7 shows a friction reducing mechanism 50 according to the present invention.
5 illustrates an amplitude limiter 70 that is desirably used with. One or more amplitude limiters 70 are also provided between the ground-side concrete foundation 30 and the house-side concrete foundation 40.
In FIG. 7, the amplitude limiter 70 is installed such that its lower end is fixed to the ground-side concrete foundation 30 and its upper end is fixed to the house-side concrete foundation 40. Specifically, the amplitude limiter 70 includes a steel rod 71 having a rubber body 72 fixed to the periphery thereof, and a plate member 73 attached to the upper end of the steel rod 71. In order to attach the plate member 73, a male screw portion is formed at the upper end of the steel bar 71. Instead of the plate member 73, for example, two crossed rods may be used.

In order to install such an amplitude limiter 70, a through hole 40b is formed in the residential concrete foundation 40. And the plate member 73 is made larger than the diameter of the through hole 40b. Plate member 73 and housing side concrete foundation 40
A gap is formed between the plate member 73 and the upper surface of the plate member 73. A guide member 73-1 for guiding the horizontal movement of the plate member 73 associated with the earthquake is provided in the gap. The plate member 73 is hung on the upper surface side of the house-side concrete foundation 40 so that it can move only horizontally and cannot move upward.

The above-described amplitude limiter 70 is constructed as follows. When the ground-side concrete foundation 30 is formed, the lower end of the steel rod 71 to which the rubber body 72 is fixed is embedded in the ground-side concrete foundation 30. Steel bar 7
The rubber body 72 is not necessary for the portion of 1 that is embedded in the ground-side concrete foundation 30, but it is preferable that the rubber body 72 be anchored. When the ground-side concrete foundation 30 is hardened, as described above, the ground-side concrete foundation 30
A sheet such as a vinyl sheet is laid on the floor to form a house-side concrete foundation 40. At this time, a through hole 40b is formed at a position corresponding to the steel rod 71. When the house-side concrete foundation 40 is solidified, remove the formwork,
An external thread portion of the upper end portion of the steel bar 71 is inserted into the center hole of the plate member 73, and fixed with a nut 74. Subsequently, a guide member 73-1 is provided between the plate member 73 and the house-side concrete foundation 40.
Is interposed, and the plate member 73 is locked to prevent upward displacement. The plate member 73 also has a function of preventing the housing 10 from rising due to wind pressure or the like by being attached to the upper surface side of the housing-side concrete foundation 40 in a state where upward displacement is prevented. The lateral displacement of the house due to wind pressure is prevented by the presence of the above-mentioned coefficient of static friction. In other words, in areas where large wind pressures are expected, the coefficient of static friction is increased.

Such an amplitude limiter 70 operates as follows. It is assumed that the steel bar 71 is located at the center of the through hole 40b. When a roll occurs during the occurrence of an earthquake, the vibration is reduced by the action of the friction reducing mechanism 50 and transmitted to the house side, so that the amplitude is smaller than the distance from the outer circumference of the rubber body 72 to the inner circumference of the through hole 40b. If the steel rod 71 does not collide with the edge of the through hole 40b, however, the amplitude of the roll becomes large, and the steel rod 71 is
When the house collides with the wall of the through hole 40b, the house rolls in the same manner as the ground side. However, the impact force of the steel rod 71 against the wall of the through hole 40b is reduced by the rubber body 72. That is, the amplitude limiter 70 also has a function of a damper mechanism.

In any case, the reason why the above-described amplitude limiter 70 is used is as follows. Friction reduction mechanism 5
If the maximum half amplitude on the house side is restricted to a predetermined value by 0,
If a large roll occurs when there is a tree or structure on the ground next to the house, or when a person is standing, the ground is largely rolled while the roll on the house side is small. Structures and people will collide with the walls of the house. The amplitude limiter 70 is for eliminating such a fear.

FIGS. 8 and 9 are a cross-sectional view and a plan view, respectively, showing an example of arrangement when a plurality of the friction reducing mechanisms 50 and the amplitude limiters 70 are provided on the solid base portion. Although it depends on the total weight of the house, the number of the friction reducing mechanisms 50 to be installed is usually one.
The number of the installed amplitude limiters 70 is usually 2 to
Up to 4 are sufficient. In other words, the number of the friction reducing mechanisms 50 to be installed is determined by the load bearing characteristics in the vertical direction.
It can be made to have a load bearing capacity of about 10 tons per piece. In FIG. 9, a case where twelve friction reducing mechanisms 50 are installed is indicated by white circles, and they are arranged so that a vertical load on the house side is applied to each as uniformly as possible. On the other hand, the amplitude limiter 70 is disposed between the friction reducing mechanisms 50 as shown by a square in FIG. FIG.
In this case, the friction reducing mechanism 50 and the amplitude limiter 70 do not appear on the same cross section, but may be arranged so as to appear on the same cross section as shown in FIG.

As shown in FIG. 3B, even when there is no component for hanging the plate member 73 on the housing-side concrete foundation 40, a reinforcing member such as a steel plate is provided on the housing-side concrete foundation 40. The plate member 73 may be hung on this.

The components of the friction reducing mechanism 50 will be further described. In the case of a resin plate, a bakelite material is used. In the case of metal, oil-less metal is used in addition to steel. In the case of ceramic, glass, brick tile, and the like can be given. In the case of paints, ordinary paints have a coefficient of friction of about 0.5 to 1; however, by mixing a particulate friction reducing material (for example, the above-mentioned ethylene tetrafluoride), the coefficient of friction can be reduced to 0.3. It can be:
Such a paint may be applied only by a roller or a brush, or may be further subjected to a heat treatment. In the case of stone, marble, granite and the like can be mentioned. This is because marble, granite, and the like can reduce the friction coefficient to 0.3 or less by polishing the surface. Of course, the above-mentioned synthetic resin and thermosetting resin material are applied and fixed to such a plate-like material,
Paint may be applied. In any case, the friction reducing mechanism 50 may be designed so that its friction coefficient is in the range of 0.05 to 0.3.

Referring to FIG. 10, a second embodiment of the friction reducing mechanism 50 will be described. In the present embodiment, a sliding member is formed by screwing a sliding member around the screw member 54-1 and a sliding member 54-2 combined on the lower surface side of the screw member 54-1.
And a plurality of metal balls 54-3 arranged between the screw body 54-1 and the sliding body 54-2. The sliding body 54-2 is composed of the concrete foundation 4 on the house side.
What is necessary is that it is accommodated in the 0 through-hole 40a in a loosely fitted state.

In this embodiment, the screw body 54-1 is rotated by using the groove 54-1a provided on the upper surface side of the screw body 54-1 so that the sliding body 54-2 is slightly moved from the lower surface side of the housing-side concrete foundation 40. Can protrude. Ball 5
4-3 is for preventing rotation of the screw body 54-1 from being transmitted to the sliding body 54-2.

The screw body 54-1 is preferably made of metal, especially steel, or a resin body such as ceramic or reinforced plastic, since it is necessary to cut a screw. On the other hand, the sliding body 54-2
In addition to metals, especially steel and ceramics, bakelite plates and resin plates made of reinforced plastics with high mechanical strength such as glass epoxy resin, stone materials, concrete, etc. can be used. The above-described synthetic resin material or thermosetting resin material may be applied and fixed, or a paint may be applied. In this embodiment, only the plate member 52 is provided on the ground-side concrete foundation 30 side, but a rubber plate 51 for vibration reduction may be provided similarly to FIG.

FIG. 11 shows a third embodiment of the friction reducing mechanism 50. This embodiment is an improvement of the second embodiment shown in FIG. 10, and includes a rubber plate 54-4 for vibration reduction between a screw body 54-1 and a sliding body 54-2 for absorbing vertical vibration.
And a rubber plate 54-4 for vibration reduction and a screw body 5
A plurality of balls 54-3 and a support plate 54-5 for supporting the balls 54-3 are interposed between the ball 4-1 and the ball 4-1.

In each of the second and third embodiments, the sliding member 54 is removed by removing the screw member 54-1.
-2, component members such as the ball body 54-3 can be easily replaced. Since the function as the sliding member is almost the same as that of the first embodiment, the description is omitted. FIG.
0 and the sliding body 5 in FIG.
4-2, the vibration reduction rubber plate 54-4 and the support plate 54-5 are separated from the screw body 54-1 so that even if the screw body 54- is moved upward, it does not move together. From this, the screw 5
After the 4-1 is removed, two small holes may be provided adjacent to each other to make it easier to take out each of the above-mentioned components by, for example, tweezers or the like. Alternatively, the sliding member 54-2 or the support plate 54
-5 may be attached with a string, or the screw body 54-1 may be connected to the sliding body 54-2 or the support plate 54-5 opposed thereto by a chain or the like.
The connection may be rotatably supported in order to eliminate the torsion accompanying the rotation of -1. From this, the sliding body 54-2 in FIG. 11, the rubber plate 54-4 for vibration reduction,
It is better to integrate the support plate 54-5 by bonding.
This is the same in the embodiment described later. Further, the ball 54-3 may not be provided in any of the second and third embodiments. This is when the screw body 54-1 rotates.
Sliding body 54-2, rubber plate 54-4 for vibration reduction, support plate 54-1
This is because there is no problem even if 5 rotates.

In the first to third embodiments, one of the lower surface of the screw member 54 and the lower surface of the sliding member 54-2 and the upper surface of the plate member 52 have a slit-like or lattice-like shape. By providing the groove, the contact area between the two can be changed to adjust the friction coefficient.

FIG. 12A shows the thin plates 52-1 and 54 made of a thermosetting resin material on the upper surface of the plate member 52 and the entire lower surface of the sliding member 54-2 in the forms of FIGS.
An example in which -8 is applied and fixed is shown. The resin material is, as mentioned earlier, other than tetrafluoroethylene and nylon,
Things such as a reinforcing material and a lubricant may be mixed. On the other hand, FIG. 12B shows an example in which a thin plate 52-1 made of a thermosetting resin material is applied and fixed directly on the upper surface of the ground-side concrete foundation 30 to form a resin plate.

FIG. 13 shows a fourth embodiment of the friction reducing mechanism 50, and shows an improved example for providing the block body 53 at low cost. In FIG. 13, a block body 53 has a diameter larger than that of the screw body 54-1 ′ and is fixed to the housing-side concrete foundation 40, and a screw body 54-1.
And a nut body 53-2 having a female screw hole into which the screw hole of -1 'can be inserted as a through female screw hole. The nut body 53-2 is provided with two support rods 53-
3 Then, the two support rods 53-3 are connected to the cylindrical body 5.
The nut body 53-2 can be attached to and detached from the cylindrical body 53-1 by bridging the holes 53-1a provided at two places in the diameter direction of 3-1. The cylindrical body 53-1 is provided with a flange 53-11 at the lower end, and the flange 53-11
The mechanical strength is improved by providing the reinforcing portion 53-12 at an angular interval of 90 degrees between the main body and the cylindrical body 53-1. A sliding body 54-2 is provided below the screw body 54-1 '.
Are combined so that they are in direct contact. Regarding the through hole 40b of the housing-side concrete foundation 40, the nut body 53-
In order to facilitate attachment / detachment, the upper part 2 is formed so as to have a step part having a larger diameter at the upper part.

Of the block members 53, the nut member 53-2 is provided with a support rod 5 using a commercially available nut.
3-2 can be provided cheaply and easily by welding, and the cylindrical body 53-1 can also be manufactured cheaply and easily using a steel pipe. In addition, you may replace the block body 53 in FIG. 4, FIG. 10, FIG. 11, and FIG. 14 and FIG. In this case, a female screw to be screwed with the screw body is formed on the inner wall of the cylindrical body 53-1.

As described above, the screw body 54-1 'is any one of a steel body, a ceramic body, and a resin body such as a reinforced plastic, and the slide body 54-2 is a metal, for example, a steel body, a ceramic, a resin plate, or the like. Any of stone and concrete, or at least a part of the lower surface thereof, may be coated with a friction-reducing resin material and fixed or coated with a paint.

FIG. 14 is a view for explaining a fifth embodiment of the friction reducing mechanism 50. Instead of the sliding member 54-2 shown in FIG. 11, a rocking member 54-6 and a holding member are provided. A combination with the plate 54-7 is used. The rocking body 54-6 has a shape similar to a go stone, and has a curved surface that is convex upward and downward, respectively. In this embodiment, three oscillators 54-6 are used, and three recesses 54- are provided at an angle interval of 120 degrees to hold the three oscillators 54-6 from above.
A holding plate 54-7 having a 71 is used. Each of the recesses 54-71 formed in this manner has a space in which the swing of each swinging body 54-6 can be secured. In FIG. 11, since the holding plate 54-7 is arranged below the vibration-reducing rubber plate 54-4, each rocking body 54-6 can rock and slide on the plate 52. The oscillating body 54-6 is made of any one of a metal such as steel, a resin body such as ceramic and reinforced plastic, a stone material, and concrete, and has a resin material described above, for example, ethylene tetrafluoride on its surface. A resin material such as nylon or a mixture of a reinforcing material and a lubricant may be applied and fixed.

The oscillating body 54-6 in the present embodiment includes first to
Unlike the sliding body according to the fourth embodiment, it is characterized in that it not only slides but also swings. That is, when the shaking due to the earthquake occurs, the rocking body 54-6 does not slide at first, but starts to slide after swinging within a range of ± several cm in accordance with the shaking due to the earthquake. This has the effect that the house does not shake in an earthquake with a small seismic intensity or an earthquake with a short shaking, and the effect of reducing earthquakes is exerted in an earthquake of a certain scale or more.

In the fifth embodiment as well, similarly to the third embodiment, by removing the screw body 54-1, the components such as the rocking body 54-6 and the ball body 54-3 can be easily replaced. can do. Needless to say, it is sufficient that the number of the rocking bodies 54-6 is one or more.
3 may be omitted.

In each of the first to fifth embodiments, the screw groove shape of the block 53 and the screw 5
As for the thread shapes of 4, 54-1, 54-1 ', the square shape can increase the mechanical strength with respect to the total weight of the housing part, as compared with the triangular cross section as shown in the figure.

FIG. 15 shows a sixth embodiment of the present invention. The friction reducing mechanism 50 'according to this embodiment is the same as that shown in FIGS.
1 is applied to the embodiment shown in FIG. That is, a plurality of spheres 54-9 are arranged in place of the oscillating body 54-6 shown in FIG. The holding plate 54-7 may or may not have a partition wall for accommodating the spheres 54-9 one by one. The sphere 54-9 is made of metal. This configuration has a very low coefficient of friction because it uses a sphere 54-9. Therefore, it is preferable that the friction reducing mechanism 50 'is not used alone, but is used in combination with the above-described first to fifth embodiments. In FIG. 9,
By using several of the twelve friction reducing mechanisms as the friction reducing mechanism 50 'according to the present embodiment, the dynamic friction coefficient as a whole can be adjusted.

Next, another example of the amplitude limiter 70 described with reference to FIG. 7 will be described with reference to FIGS. 16, an amplitude limiter 70 'uses a columnar rubber body 75 instead of the combination of the steel bar 71 and the rubber body 72 described in FIG. An upper plate 76-1 and a lower plate 76-2 are attached to both upper and lower ends of the rubber body 75, respectively.
The upper plate 76-1 is a through hole 4 of the concrete foundation 40 on the house side.
It is fixed to the house side concrete foundation 40 by making it larger than 0b. The lower plate 76-2 is fixed to the ground-side concrete foundation 30.

In FIG. 17, an amplitude limiter 70 ″ has a plurality (four in this example) of substantially spiral steel rods 77 instead of the combination of the steel rod 71 and the rubber body 72 described in FIG. An upper plate 78-1 and a lower plate 78-2 are respectively attached to upper and lower ends of the plurality of substantially spiral steel bars 77. The steel bar 77 has a length of about one round. Have
Therefore, the fixed position for attachment to the upper plate 78-1 and the lower plate 78-2 is a position substantially opposed to each other. The upper plate 78-1 is larger than the through hole 40b of the housing-side concrete foundation 40 and is fixed to the housing-side concrete foundation 40. Lower plate 78
-2 is fixed to the ground-side concrete foundation 30.

In each of FIGS. 16 and 17, the upper plate and the lower plate are fixed by, for example, the house-side concrete foundation 4.
0, bolts are embedded in the ground-side concrete foundation 30, respectively, holes are provided in the upper plate and the lower plate, through which bolts can be inserted, and nuts may be fitted to bolts protruding from these holes and tightened. The upper plate may be rod-shaped.

In each of the examples of FIGS. 16 and 17,
Since the rubber body 75 and the steel rod 77 exhibit elasticity, they have an effect of absorbing the energy of the rolling at the time of the occurrence of the earthquake.

The story changes, concrete foundation 4 on the house side.
A wooden pillar on the house side is usually mounted on the zero through a wooden base. When a considerable number of years have passed since the construction of such a wooden base, a termite may be eaten by the termites or may be corroded by water or the like, resulting in a defective portion. When such a missing part is found by a house diagnosis or the like, a renovation work is required. Until now, this type of renovation work has been to install a metal plate called a hole-down metal fitting on the pillar side, attach a member called a chemical anchor to the concrete foundation on the house side, and mechanically connect the hole-down hardware and the chemical anchor. To be reinforced. However, since such renovation work requires extremely high costs (10 million yen or more per building), it is actually hardly performed.

A fourth embodiment for solving the above problem will be described with reference to FIGS.
In FIG. 18, a plurality of holes 40 c for attaching a hole-down metal fitting to the house-side concrete foundation 40 and the pillar are provided in advance in the house-side concrete foundation 40 corresponding to the wooden pillar on the house side. . The hole 40c is provided with a screw hole into which a metal member is embedded in its inner wall and into which a bolt can be screwed. In FIG. 19, when a missing part due to termites, corrosion, or the like is found on the wooden base 100 by a house diagnosis or the like, the hole-down metal fitting 120 is attached to the pillar 110 and the house-side concrete foundation 40 using the hole 40c. . In addition, a hole for a bolt can be formed on the pillar 110 side even afterwards.
The surface on which the holes 40c are provided is preferably an outer surface in consideration of workability, but may be an inner surface. According to such a foundation structure, it is possible to perform renovation work at a low cost when a defect occurs in the base 100. Of course, this form
The present invention can be applied to any of the first to sixth embodiments.

[0081]

As described above, according to the present invention,
It is possible to realize horizontal vibration reduction at the time of an earthquake at a lower cost than conventional seismic isolation devices and vibration control devices. This makes it possible to provide a detached house with safety against earthquakes at a lower price than before.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view schematically showing a base structure for earthquake damping according to the present invention.

FIG. 2 is a view of two examples of a ground-side concrete foundation in FIG. 1 as viewed from a lower surface side.

FIG. 3 is a view of three examples of the house-side concrete foundation in FIG. 1 as viewed from above.

FIG. 4 is a cross-sectional view showing a first embodiment of a friction reducing mechanism which is a main part of the base structure for vibration reduction according to the present invention.

FIG. 5 is a basic structure for explaining a jig fixing hole for mounting a jig provided on the ground-side concrete foundation when the displacement of the residential-side concrete foundation is manually returned to the original position in the present invention. FIG.

6 is an enlarged cross-sectional view (a) and an enlarged vertical cross-sectional view (b) for explaining a reinforcing portion of the jig fixing hole shown in FIG.

FIG. 7 is a cross-sectional view showing a first example of an amplitude limiter used together with a friction reducing mechanism in the base structure for vibration reduction according to the present invention.

FIG. 8 is a cross-sectional view showing an earthquake-reduction basic structure when a friction reducing mechanism and an amplitude limiter are used in combination in the present invention.

FIG. 9 is a plan view showing an arrangement example of a friction reducing mechanism and an amplitude limiter according to the present invention.

FIG. 10 is a sectional view showing a second embodiment of the friction reducing mechanism according to the present invention.

FIG. 11 is a sectional view showing a third embodiment of the friction reducing mechanism according to the present invention.

FIG. 12 is a cross-sectional view for explaining a part of two modifications of the friction reducing mechanism in FIG. 10 or FIG. 11;

FIG. 13 is a sectional view (a), a plan view (b), and a view (c) showing one part used in a fourth embodiment of the friction reducing mechanism according to the present invention, showing a main part thereof.
It is.

14A and 14B are a plan view and a sectional view, respectively, showing a main part of a fifth embodiment of the friction reducing mechanism according to the present invention.

FIGS. 15A and 15B are a plan view and a sectional view, respectively, showing a main part of a sixth embodiment of the friction reducing mechanism according to the present invention.

FIG. 16 shows a second example of the amplitude limiter used in the present invention.
It is sectional drawing which showed the example of.

FIG. 17 shows a third example of the amplitude limiter used in the present invention.
3A is a partial plan view and FIG.

FIG. 18 is a partial perspective view for explaining holes provided in a residential concrete foundation for use in repairing a wooden base in the present invention.

FIG. 19 is a partial perspective view for explaining a hole-down hardware provided on a residential concrete foundation for repairing a wooden base in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 House 20 Ground 30 Ground-side concrete foundation 40 House-side concrete foundation 50, 50 'Friction reduction mechanism 51 Rubber plate for earthquake reduction 52 Plate 53 Block body 54, 54-1, 54-1' Screw body 54-2 Sliding body 54 -3 Ball 54-4 Rubber plate for vibration reduction 54-5 Supporting plate 54-6 Oscillator 54-7 Holding plate 70, 70 ', 70 "Amplitude limiter

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) F16F 15/02 F16F 15/02 L 15/04 15/04 E (71) Applicant 500408740 Disaster Prevention Basic Development Co., Ltd. 6-12-16, Honkomagome, Bunkyo-ku, Tokyo (72) Inventor Naganori Sato 2-14-6, Daimachi, Hachioji-shi, Tokyo F-term (reference) 2D046 BA00 DA12 3J048 AA03 AB01 AC01 BA11 BG02 BG04 DA01 EA38

Claims (29)

[Claims] 1. A ground-side foundation formed on the ground on which a house is built; a housing-side foundation formed at a lower part of the house and placed on the ground-side foundation; a ground-side foundation and the house-side foundation And at least one friction reducing mechanism provided between the ground side foundation and the plate material having a predetermined area provided on the ground side foundation, and a portion corresponding to the plate material on the house side foundation. A sliding member provided so as to be able to protrude and retract from the lower surface of the housing-side foundation and slidable on the plate material together with the housing-side foundation. 2. The base structure for seismic reduction of a house according to claim 1, wherein said sliding member is a columnar body and is threaded around its periphery, and said sliding member is provided at a location corresponding to said plate material on said house side foundation. A block body having a detachable through-threaded female screw hole of the columnar body is fixed, and the flat lower end of the columnar body is slightly projected from the lower surface of the house side foundation to be slidable on the plate material. A base structure for seismic reduction of houses. 3. The substructure for seismic vibration reduction according to claim 2, wherein the columnar body is made of a metal such as steel, ceramic, or a resin body, or a resin for reducing friction on at least a part of the lower surface thereof. The plate is a metal plate such as a steel plate, a ceramic plate, a resin plate, a stone plate, a concrete plate, or a resin material for reducing friction on at least a part of an upper surface thereof. A base structure for seismic reduction of a house, characterized by being fixed or coated with paint. 4. The base structure for seismic reduction according to claim 3, wherein the columnar body is made of any one of a metal such as steel, a ceramic, a resin body, or a resin material for reducing friction on the entire lower surface thereof. Is fixed or coated with a paint, wherein the plate material is a metal plate, a ceramic plate, a resin plate, a stone plate,
In the case where any of the concrete plates or the entire upper surface thereof is affixed with the friction reducing resin material or coated with a paint, a groove for adjusting the frictional force is formed on one of these contact surfaces. A base structure for seismic reduction of houses. 5. The substructure for seismic reduction of a house according to claim 1, wherein the sliding member includes a columnar body threaded around, and a sliding body combined with a lower surface side of the columnar body. At a location corresponding to the plate material on the house-side foundation, a block body having a detachable through-threaded female screw hole of the columnar body is fixed in a state in which the sliding body is accommodated,
A base structure for seismic reduction of a house, wherein a flat lower end of the sliding body is slightly projected from a lower surface of the house-side foundation by the columnar body so as to be slidable on the plate member. 6. The base structure for seismic reduction according to claim 5, wherein said columnar body is any one of a metal such as steel, ceramic and resin, and said sliding body is metal such as steel, ceramic and resin. Any of the body, stone, concrete, or at least a part of the lower surface thereof is a resin material for friction reduction fixed or coated with a paint, the plate material is a metal plate such as a steel plate, a ceramic plate, a resin plate, A base structure for seismic reduction of houses, characterized in that a resin material for friction reduction is fixed or a paint is applied to one of a stone slab and a concrete slab or at least a part of an upper surface thereof. 7. The housing seismic reduction base structure according to claim 5, wherein the block body has a larger diameter than the cylindrical body and is fixed to the house-side foundation, and the cylindrical body A nut body having a female screw hole into which a body can be screwed as the penetrating female screw hole, the nut body having two diametrically fixed support rods on the outer peripheral side thereof, wherein the two support rods The nut is detachably attached to the cylindrical body by bridging the cylindrical body with holes provided at two locations in the diameter direction of the cylindrical body. 8. The base structure for seismic reduction of a house according to claim 7, wherein the columnar body is any one of a metal such as a steel, ceramic, and a resin, and the sliding body is a metal such as a steel, a ceramic, and a resin. Any of the body, stone, concrete, or at least a part of the lower surface thereof is a resin material for friction reduction fixed or coated with a paint, the plate material is a metal plate such as a steel plate, a ceramic plate, a resin plate, A base structure for seismic reduction of houses, characterized in that a resin material for friction reduction is fixed or a paint is applied to one of a stone slab and a concrete slab or at least a part of an upper surface thereof. 9. The base for seismic vibration reduction according to claim 6, wherein at least one ball is interposed between said cylindrical body and said sliding body. Construction. 10. The base structure for seismic reduction of a house according to claim 6, wherein a rubber plate for seismic reduction is interposed between said cylindrical body and said sliding body. . 11. The base structure for seismic vibration reduction of a house according to claim 10, wherein: between said cylindrical body and said rubber plate for vibration reduction.
A base structure for seismic reduction in a house, wherein at least one ball body and a support plate for supporting the ball body are interposed. 12. The base structure for seismic reduction of houses according to claim 6, wherein said sliding body is made of metal such as steel, ceramic, resin, stone, concrete, or a lower surface thereof. A resin material for reducing friction is fixed to the entire surface or a paint is applied, and the plate material is any one of a metal plate such as a steel plate, a ceramic plate, a resin plate, a stone plate, a concrete plate, or the entire upper surface thereof. When a resin material for reduction is fixed or a paint is applied, a groove for adjusting a frictional force is formed on one of these contact surfaces. 13. The substructure for seismic reduction of a house according to claim 1, wherein the sliding member includes a cylindrical body threaded around and a sliding body combined with a lower surface of the cylindrical body. The sliding body includes at least one rocking body having a curved surface that is convex upward and downward, and a holding plate that holds the rocking body from above, and at a location corresponding to the plate material on the house-side foundation, A block body having a female screw hole through which the columnar body can be screwed and which can accommodate the sliding body is fixed, and the rocking body is slightly projected from the lower surface of the house-side foundation by the columnar body. A base structure for seismic reduction of a house, characterized in that it can roll and slide on the plate. 14. The base structure for seismic reduction of a house according to claim 1, wherein the sliding member includes a columnar body threaded around and a sliding body combined with a lower surface side of the columnar body. The sliding body includes a plurality of spheres and a holding plate that holds the plurality of spheres from above, and at a position corresponding to the plate material on the house-side foundation, a penetrating female screw into which the cylindrical body can be screwed. A block body having a hole is fixed with the sliding body housed therein, and the plurality of spheres are slightly protruded from the lower surface of the house-side foundation by the columnar body so as to be able to roll on the plate material. A base structure for seismic reduction of houses. 15. The substructure for housing seismic reduction according to claim 13, wherein the columnar body is made of metal such as steel, ceramic, or the like.
A resin body, wherein the oscillator is a metal such as steel,
Any of ceramic, resin, stone, concrete,
Or a resin material for friction reduction is fixed or coated on at least a part of their lower surfaces, and the plate material is a metal plate such as a steel plate, a ceramic plate, a resin plate, a stone plate, a concrete plate, or A base structure for seismic reduction of a house, characterized in that a resin material for reducing friction is fixed to at least a part of the upper surface thereof or a paint is applied. 16. The substructure for seismic vibration reduction according to claim 14, wherein said columnar body is made of metal such as steel, ceramic, or the like.
Any one of a resin body, the sphere is made of metal, and the plate material is a metal plate such as a steel plate, a ceramic plate, a resin plate, a stone plate, a concrete plate, or at least a part of the upper surface thereof to reduce friction. A base structure for housing seismic reduction characterized in that a resin material for the house is fixed or a paint is applied. 17. The base structure for housing vibration reduction according to claim 15, wherein at least one ball body is interposed between said cylindrical body and said holding plate. For foundation structure. 18. The base structure for seismic reduction of a house according to claim 15, wherein a rubber plate for seismic reduction is interposed between said cylindrical body and said holding plate. . 19. The base structure for seismic vibration reduction according to claim 18, wherein: between the columnar body and the rubber plate for vibration reduction.
A base structure for seismic reduction in a house, wherein at least one ball body and a support plate for supporting the ball body are interposed. 20. The seismic reduction base structure according to any one of claims 1 to 19, wherein a seismic reduction rubber plate is interposed between said plate member and said ground-side foundation. Seismic foundation structure. 21. The base structure for seismic abatement according to any one of claims 1 to 20, wherein the friction reducing mechanism has a friction coefficient in a range of 0.05 to 0.3.
When the ground-side foundation horizontally vibrates due to the earthquake, the horizontal vibration is reduced and transmitted to the house-side foundation, and furthermore, the house is vibrated within a predetermined maximum single amplitude. Seismic foundation structure. 22. The base structure for seismic reduction according to claim 21, wherein said friction reducing mechanism has N sets (N is a positive integer of 2 or more), and n sets (n is a positive integer of 1 or more) are provided. integer)
Is the friction reduction mechanism according to any one of claims 2 to 13, and the remaining (N-n) sets are the friction reduction mechanisms according to claim 14, whereby the overall friction coefficient is adjusted. The base structure for seismic reduction. 23. The base structure for seismic reduction according to any one of claims 1 to 22, wherein one of the bases is further fixed to the ground-side foundation between the ground-side foundation and the house-side foundation. Characterized in that at least one amplitude limiting mechanism fixed to the housing-side foundation is provided. 24. The base structure for seismic vibration reduction according to claim 23, wherein the amplitude limiting mechanism has a through hole in the house side foundation, and a lower end of a steel rod having a smaller diameter than the through hole. And a rubber member is fixed around the base, and a member larger than the through hole is slidably attached to the upper end of the base on the upper surface of the housing-side foundation, and the member is attached to the housing-side foundation. A base structure for seismic reduction in a house, characterized in that it is configured so as to prevent displacement from the upper side to the upper side. 25. The base structure for seismic vibration reduction according to claim 23, wherein said amplitude limiting mechanism has a through-hole in said housing-side foundation and a first plate member fixed to said ground-side foundation at a lower end side. And a pillar-shaped rubber body having a second plate member larger than the through-hole fixed to the house-side foundation at the upper end side is installed through the through-hole. Base structure for seismic reduction. 26. The base structure for seismic vibration reduction according to claim 23, wherein the amplitude limiting mechanism has a through-hole in the housing-side foundation and a first plate member fixed to the ground-side foundation at a lower end side. And a plurality of substantially spiral-shaped steel rods having a second plate member larger than the through hole fixed to the house-side foundation at the upper end side are installed through the through hole. A base structure for seismic reduction of houses. 27. The base structure for housing seismic reduction according to any one of claims 21 to 26, wherein the ground-side foundation is a solid foundation, a cloth foundation, or a combination thereof, having a flat portion on an upper surface, The base structure for seismic reduction of a house, wherein the house-side foundation is a solid foundation, a cloth foundation, or a combination thereof, having a flat portion at a location corresponding to a flat portion of the ground-side foundation. 28. The base structure for seismic vibration reduction according to claim 27, wherein the ground-side foundation and the housing-side foundation are integrally formed with at least one of an underground beam and a ground beam as a reinforcing portion. The basic structure for seismic reduction of houses. 29. The base structure for housing seismic reduction according to claim 28, wherein the ground-side foundation is formed so as to be larger in area than the housing-side foundation, and the ground-side foundation is located outside the housing-side foundation. When the housing-side foundation is displaced with respect to the ground-side foundation due to vibration caused by an earthquake, a plurality of jig fixing portions to which a jig for returning the housing-side foundation to its original position can be attached. The base structure for seismic reduction in houses, which is provided in