JP3803153B2 - Seismic structure of building - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an earthquake-resistant structure of a building, and more particularly to an earthquake-resistant structure that is provided at a foundation portion of a building and reduces the seismic force applied to the building.
[0002]
[Prior art]
In Japan, an earthquake-prone country, we must build buildings that can withstand earthquakes. As countermeasures, various methods and structures for earthquake resistance have been developed, from vibration suppression to vibration isolation, all of which are intended for large buildings such as high-rise buildings, factories, and plants. It is expensive.
[0003]
[Problems to be solved by the invention]
On the other hand, for small-scale buildings such as private houses and small and medium buildings, which are the most common buildings, it is difficult to adopt such a large and expensive seismic structure. Although it has been devised to provide earthquake resistance, etc., there has been a problem that it is difficult to achieve sufficient economic efficiency due to increased material costs and design and construction costs.
[0004]
Therefore, the present invention has been made paying attention to such a conventional problem, and particularly for a small-scale building such as a private house or a small and medium-sized building, an earthquake-resistant structure of a building that can be easily and easily provided. Is intended to provide.
[0005]
[Means for Solving the Problems]
The present invention has been made to achieve the above object, and the gist thereof is an earthquake-resistant structure that is provided in a foundation portion of a building and reduces the seismic force applied to the building, and includes a lower foundation concrete plate. And an upper foundation concrete plate and an adhesive filled in a sealed space formed so as to be sandwiched between the upper and lower foundation concrete plates so as to be impregnated in a sponge-like mat And the upper foundation concrete plate includes a spherical convex portion projecting downward, and the lower foundation concrete plate includes a spherical concave portion having substantially the same shape as the convex portion, In the earthquake-resistant structure of the building, the part is loosely arranged in the recess.
[0006]
Here, in the above description, the pressure-sensitive adhesive material is a fluid or semi-fluid substance rich in viscosity, and for example, oils and greases which are petroleum refined products can be used.
[0008]
And according to the earthquake-resistant structure of the building of the present invention, the adhesive material is filled in the sealed space formed through, for example, a rubber spacer between the lower foundation concrete plate and the upper foundation concrete plate. By using this sticky sticky sticky material of this adhesive material, seismic motion in various directions such as the horizontal direction and vertical direction received by the lower foundation concrete plate at the time of earthquake is delayed and transmitted to the upper foundation concrete plate with reduced absorption Therefore, the seismic force received by the building formed on the upper foundation concrete slab is easily reduced.
[0009]
In addition, since the spherical convex part of the upper foundation concrete plate is loosely placed in the spherical concave part of the lower foundation concrete plate, the upper foundation concrete plate and the building formed above it are Even if it is displaced relative to the lower foundation concrete plate, for example, it can be easily returned to the loose fitting state where the spherical axes of the convex part and concave part match, so that it can be easily returned to the original position without relative displacement. It becomes possible to restore to.
[0010]
And the seismic structure of this invention makes it easy to perform the operation | work which fills and holds the said adhesive material in the said airtight space by making the said adhesive material into the state which impregnated the sponge-like mat.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, preferred embodiments of the present invention, that is, examples will be described in detail with reference to the accompanying drawings. As an example, as shown in FIG. 1, the building earthquake-resistant structure 10 according to this embodiment is provided on the foundation portion 12 of the building 11 in order to impart earthquake resistance to a private house as the building 11. It is.
[0012]
The seismic structure 10 of this embodiment is a hermetic seal formed so as to be sandwiched between a lower foundation concrete plate 13, an upper foundation concrete plate 14, and upper and lower foundation concrete plates 13, 14. The adhesive material 16 filled in the space 15 is included.
[0013]
Here, the lower foundation concrete plate 13 has a cross-sectional shape as shown in FIG. 1 by placing a formwork on a foundation ground formed by digging the ground surface and laying crushed stones, and placing cast-in-place concrete. The central portion 25 protrudes further downward to increase its thickness, and a spherical concave portion 17 is formed on the upper surface side of the central portion 25. .
[0014]
On the other hand, the upper foundation concrete plate 14 is also made of cast-in-place concrete, and a large number of cylindrical rubber spacers 23 disposed in a sponge-like mat 18 laid on the upper surface of the lower foundation concrete plate 13. (See FIG. 3), and by placing concrete with a steel plate 19 of a predetermined shape placed above the lower foundation concrete plate 13 with a space between them, The cross-sectional shape as shown in FIG.
[0015]
In addition, the iron plate 19 is formed with a spherical convex portion 20 which is formed in the central portion of the iron plate 19 and has a shape substantially the same as the spherical concave portion 17 projecting downward (see FIG. 1). Therefore, when concrete is cast using the steel plate 19 installed above the lower foundation concrete plate 13 as a formwork, the upper foundation concrete plate 14 is loosely fitted in the central portion of the spherical concave portion 17 with an interval. The spherical convex portion 20 is formed.
[0016]
Further, the iron plate 19 is formed with circular holes at the four corners, and when placing concrete above the iron plate 19, a cylindrical box is provided at each position of the hole. Accordingly, as shown in FIG. 2, anchor holes 22 for inserting anchor bolts 21 described later are formed at the four corners of the upper foundation concrete plate 14.
[0017]
According to this embodiment, the gap formed between the lower foundation concrete plate 13 and the upper foundation concrete plate 14 via the rubber spacer 23 is filled with the adhesive material 16 and the peripheral edge opening thereof. When the lid member 24 is attached to the closed space 15, the sealed space 15 is formed.
[0018]
Here, the adhesive material 16 is a muddy fluid made of, for example, fats and oils, and has a large viscosity, and is a sponge-like material laid between the lower foundation concrete plate 13 and the upper foundation concrete plate 14. The mat 18 is filled in an impregnated state.
[0019]
As a method for filling the sealed space 15 with the adhesive material 16, for example, after forming the lower foundation concrete plate 13 and laying the sponge mat 18, the adhesive material 16 is placed on the sponge mat 18 before the iron plate 19 is installed. In addition to the method in which the adhesive material 16 is filled in the sealed space 15 by forming the upper foundation concrete plate 14 after the upper foundation concrete plate 14 is formed, the upper foundation After the concrete plate 14 is formed, all of the adhesive material 16 can be pumped and injected into the sealed space 15 to fill the whole.
[0020]
The lid member 24 attached to the peripheral opening of the sealed space 15 is made of a flexible member such as a rubber plate, and can withstand the fluid pressure accompanying the fluctuation of the adhesive material 16 in the sealed space 15 during an earthquake. It has sealing strength and can be deformed following the relative displacement between the lower foundation concrete plate 13 and the upper foundation concrete plate 14.
[0021]
Furthermore, according to the earthquake-resistant structure 10 of this embodiment, the anchor bolt 21 that connects the lower foundation concrete plate 13 and the upper foundation concrete plate 14 is provided. That is, the anchor bolt 21 is provided at the four corners of the foundation concrete plates 13 and 14 so that the lower half portion thereof is embedded and fixed in the lower foundation concrete plate 13, and the upper half portion thereof is attached to the upper foundation concrete plate 14. The upper end portion of the anchor hole 22 is locked to the upper surface of the upper foundation concrete plate 14 through the formed anchor hole 22.
[0022]
Accordingly, the anchor bolt 21 is in a free state inside the anchor hole 22 through which the anchor bolt 21 is inserted, so that the relative displacement of the upper foundation concrete plate 14 with respect to the lower foundation concrete plate 13 is reduced within the gap. While allowing, when the relative displacement exceeds the limit in the event of a large earthquake, it is configured to function as an anchor or the like for preventing the building 11 from falling.
[0023]
In addition, in the holes formed at the four corners of the iron plate 19, for example, a reinforced rubber sheet having flexibility is attached so as to cover the holes in a state where the anchor bolts 21 are penetrated. The sealed state of the sealed space 15 between the lower foundation concrete plate 13 and the upper foundation concrete plate 14 can be maintained while allowing the anchor bolt 21 to move within the anchor hole 22.
[0024]
Then, according to the seismic structure 10 of this embodiment configured as described above, the adhesive material 16 is filled in the sealed space 15 formed between the lower foundation concrete plate 13 and the upper foundation concrete plate 14. Therefore, due to the viscosity of the adhesive material, the earthquake motion received by the lower foundation concrete plate 13 during the earthquake is delayed and transmitted to the upper foundation concrete plate 14 with reduced absorption. The seismic force received by the building 11 formed on the plate 14 is easily reduced.
[0025]
Further, the spherical convex portion 20 of the upper foundation concrete plate 14 is loosely arranged in the spherical concave portion 17 of the lower foundation concrete plate 13, thereby forming the upper foundation concrete plate 14 and above the upper concrete concrete plate 14. Even when the building 10 is displaced relative to the lower foundation concrete plate 13 due to the seismic force, it can be easily restored to a state without displacement.
[0026]
And according to this embodiment, the construction cost increases due to the double foundation, but it is only the cost of excavation and concrete, it is a small amount in terms of the construction cost as a whole, and as a whole foundation However, if the lower foundation concrete plate 13 supports the load, the upper foundation concrete plate 14 only serves to fix the building 11 so as to work integrally with the building 11, so the upper foundation concrete plate 14 and the lower foundation concrete plate Both 13 do not require a firm design strength.
[0027]
That is, according to this embodiment, it is possible to easily and easily provide an earthquake resistant structure for a private house.
[0028]
In addition, this invention is not limited to the thing of the embodiment of the said Example, It can employ | adopt in various modifications within the range of the structure described in each claim. For example, the spherical concave and convex portions provided in the lower foundation concrete plate and the upper foundation concrete plate do not necessarily have to be provided in the central portion thereof, and may be installed in several places depending on the shape of the building, for example, the foundation It can be installed in various variations, for example, just under the beam.
[0029]
Further, the adhesive material does not necessarily need to be filled in the sealed space in a state of being impregnated with a sponge-like mat.
[0030]
Furthermore, the earthquake-resistant structure of the building of the present invention is not limited to small and medium-sized buildings such as private houses, but can also be adopted for large high-rise buildings and civil engineering structures.
[0031]
【The invention's effect】
As described above in detail, the earthquake-resistant structure of the building of the present invention is formed so as to be sandwiched between the lower foundation concrete plate, the upper foundation concrete plate, and the upper and lower foundation concrete plates. and a sealed space is filled in a state of being impregnated into a sponge-like mat made from an adhesive, and a spherical convex portion of the upper foundation concrete panel is loosely arranged in the spherical recess of the lower foundation concrete panel Therefore, the seismic force received by the building formed on the upper foundation concrete plate can be effectively reduced and the relative displacement between the upper foundation concrete plate and the lower foundation concrete plate can be easily eliminated. In addition, it can be provided easily and easily, particularly for small buildings such as private houses and small and medium buildings.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view for explaining the structure of a seismic structure for a building according to an embodiment of the present invention.
FIG. 2 is a plan view of the upper foundation concrete plate as viewed from above.
FIG. 3 is an enlarged cross-sectional view along AA in FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Seismic structure 11 Building 12 Foundation part 13 Lower foundation concrete plate 14 Upper foundation concrete plate 15 Sealed space 16 Adhesive material 17 Spherical recessed part 18 Sponge-like mat 20 Spherical convex part 21 Anchor bolt 23 Rubber spacer

Claims (1)

It is an earthquake-resistant structure that is installed in the foundation part of the building to reduce the seismic force applied to the building, and is sandwiched between the lower foundation concrete plate, the upper foundation concrete plate, and the upper and lower foundation concrete plates. A spherical space in which the upper foundation concrete slab protrudes downward, and is formed of an adhesive filled in a sponge-like matte in a sealed space formed so as to be sandwiched between An earthquake-resistant structure for a building comprising a convex part, the lower foundation concrete plate having a spherical concave part substantially the same shape as the convex part, and the convex part being loosely arranged in the concave part. .

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