JP3116220B2 - Seismic foundation structure of building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earthquake-resistant foundation structure of a building having a remarkably high resistance to both pitching and rolling generated during an earthquake.

[0002]

2. Description of the Related Art As is well known, various proposals have been made for an earthquake-resistant structure of a building, but most of them have a structure in which pillars and other structural materials of the building are physically reinforced.

[0003]

However, due to the seismic waves transmitted from the source of the earthquake, the building on the ground surface is either pitched by vertical seismic waves or rolled by horizontal seismic waves. Or, since both work, the conventional earthquake-resistant structure of the building cannot sufficiently cope with the above-mentioned sway in both directions. Therefore, there is a demand for an earthquake-resistant structure that does not cause the building to collapse or be damaged by both pitching and rolling during an earthquake.

[0004]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned drawbacks and needs of the related art, and a cushion material is housed and installed at an appropriate position in a groove formed in a concrete base. Along with filling the mixture of glass beads and sand, the base of the building is installed in the groove to receive the load of the building with the cushioning material and the mixture, and against vertical pitching due to seismic waves in the vertical direction Is mainly made of cushioning material, and is mainly made of a mixed material against rolling caused by horizontal seismic waves, so as to buffer the buildings. Further, according to the present invention, the cushioning material has a configuration in which a plurality of unit cushioning materials in which a shock absorber is interposed between a hard plate material and a soft plate material are vertically stacked. It also includes a configuration that is wider than the thickness and has a water-blocking structure at the outdoor opening of the groove.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. The earthquake-resistant foundation structure of a building according to the present invention is mainly used for wooden buildings and prefabricated buildings for general household use. A shallow groove 2 is formed in the base 1 made of reinforced concrete installed on the ground surface in accordance with the basic shape of the building, and the cushioning material 3 is stored and installed at an appropriate position in the groove 2, The mixed material 4 is filled.

Since the groove 2 is formed in a shape corresponding to the floor plan of the first floor of the building, a corner or the like where the groove 2 crosses in a T shape, a cross shape, or an L shape. Is a position where the cushion material 3 described above is stored and installed.

[0007] One embodiment of the cushion material 3 is as follows: a rubber plate 31 made of a hard resin plate or the like and an elastic soft plate material 32 made of a rubber plate, a flexible synthetic resin plate or the like are sandwiched between rubber members. The unit cushion material 34 is formed integrally with a cushioning member 33 formed by spirally winding a hollow tube material having a remarkably high elastic force by closing the end portion made of a flexible synthetic resin or the like. Is formed by vertically stacking a plurality of pieces such that the hard plate 31 is on the upper side and the soft plate 32 is on the lower side.

In addition, the inside of the groove 2 is filled with a mixed material 4 together with the cushion material 3.
Is a mixture of sand and glass beads having a particle size of about 2 to 10 mm, and the mixing ratio of sand and glass beads is 30 to 7
0% by weight, whichever is greater. The mixed material 4
Is filled so that the upper surface reaches the opening of the groove 2, so that the mixture 4 is filled inside the groove 2 and the cushion material 3 is buried, so that the upper surface is filled with the opening of the groove 2. It will be located.

As described above, the groove portion 2 in which the cushion material 3 is housed and installed therein and the mixed material 4 is filled in a full shape.
The concrete base 5 of the building is placed on the upper surface of the building.

The base portion 5 is made of reinforced concrete and has a shape corresponding to the groove portion 2. For example, a block-shaped partial base portion produced at a factory is transported to a building site and integrally joined with a mortar or the like. The base part 5 can be constructed, or can be constructed at a construction site using a discarded formwork or the like.

After the base 5 is installed in the groove 2, the base 6 is fixed on the upper surface with an anchor bolt or the like protruding upward from the base 5, and the building base 7 such as a pillar or a sill is attached to the base 6. The building provided on the upper surface and corresponding to the shape of the groove 2 is built on the base 6. For this reason, the base part 5 is
Is placed on the cushioning material 3 and the mixed material 4 on the surface where the opening is formed, and the load of the building is reduced by the cushioning material 3.
And the mixture 4 are received.

Therefore, in the building constructed as described above, the foundation 5 is received by the cushioning material 3 and the mixture 4 of the groove 2 and stabilized by its own weight, so that it swings and moves. Nothing. And, when an earthquake occurs, if it is pitching due to a vertical seismic wave,
Since the cushioning material 3 is mainly a cushioning material in the vertical direction, the building is cushioned, and it is possible to withstand sudden pitching. In addition, if the earthquake is a horizontal roll, the mixed material 4 in contact with the lower surface of the base portion 5 will be rubbed and buffered, and not only can a sudden roll be prevented. Also, the roll can be cushioned by the cushion material 3.

When the sand in the mixed material 4 is wet by rainwater or the like, it hardens or rubs.
In order to close the outdoor side of the base part 5, it is preferable to provide a water-blocking curtain material 8 provided so that the upper edge is fixed to the outdoor surface of the base part 5 over the entire length of the outdoor side of the base part 5. As the water-blocking curtain material 8, a soft sheet material made of a stainless steel thin sheet or a soft resin sheet can be used, and the upper edge is fixed to the outdoor surface of the base portion 5, but the lower edge is It may or may not be fixed to the surface of the base 1. Since the entire surface of the outside of the groove portion 2 is covered by the water-blocking curtain material 8, it becomes difficult for rainwater, earth and sand, dust, and the like to flow into the groove portion 2, so that the mixed material of the groove portion 2 becomes wet and solidifies or is immersed in rainwater. There is no.

When designing the foundation of the present invention in an actual general house, such as a one-story or two-story house, the width of the opening of the groove 2 is set to about 150 mm, the depth is set to about 45 mm, and The thickness of No. 5 is set to about 120 mm. And each unit cushion material 34 of the cushion material 3
In the above, the hard plate 31 is 1 mm thick, the soft plate 32 is 2 mm thick, the thickness of the tube of the buffer 33 is about 7 mm, and the total thickness of the unit cushion material 34 is 10 mm,
The above unit cushion material 34 is superimposed up and down six times to have a thickness of 6
The cushion material 3 of about 0 mm is formed.

Therefore, the cushion member 3 is not
At the intersections and corners of
When the mixture material 4 is filled in a full shape, about 15 mm of the upper part of the cushion material 3 protrudes from the upper surface of the groove portion 2,
When the base portion 5 is placed so as to be placed, it is pressed and compressed by its own weight, so that the elastic force is increased, and the cushion material 3
Can improve the buffering action in the vertical direction.

In the present invention, the cushion material 3
In the plurality of unit cushion members 34 constituting the above, the use of the hard plate material 31 on the upper side is for protecting the cushioning member 33, and the use of the soft plate material 32 on the lower side is
The cushioning member 33 is formed by spirally winding a hollow tube material whose end is closed as a cushioning member 33 so that it can be easily fitted to the bottom of the unit and is in close contact with the hard plate member 31 of the unit cushion member 34 located below. The reason for this is that the elasticity is high enough to be able to sufficiently support the load of the building from above and to always increase the buffering effect against pitching.

Further, the reason why glass beads are mixed with sand in the range of 30 to 70% by weight in the mixture 4 is that the sand alone hardens or hardens due to a small amount of rainwater or moisture in the air and rolls. This is to prevent the occurrence of such a situation since the base portion 5 cannot be buffered in the lateral direction when an earthquake occurs.

Although the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the above-described embodiments, but may be modified in any way unless the structure described in the claims is changed. Can be implemented. For example, as the specific configuration of the cushion material 3, another configuration using an air pressure that has a buffering effect against pitching caused by a vertical seismic wave during an earthquake can be used.

[0019]

In summary, according to the present invention, a cushion material is housed and installed at an appropriate position inside a groove formed in a concrete base, and a mixture of glass beads and sand is filled therein. The foundation of the object is installed and the load of the building is received by the cushioning material and the mixture material. The cushioning material is mainly used for the pitching caused by the vertical seismic wave, and the cushioning material is mainly used for the rolling caused by the horizontal seismic wave. It is characterized in that the buildings are each buffered with a mixed material.

Therefore, even if the building causes a pitching due to an earthquake, not only can the cushioning material mainly provide a buffering effect, but even if the rolling works, the mixing material mainly provides a buffering effect. Because it can do so, it is very unlikely that a building will collapse or be damaged, no matter what kind of earthquake, even if it is a large earthquake.

By adopting a structure in which a plurality of unit cushion materials in which a shock absorber is interposed between a hard plate material and a soft plate material as a cushion material are vertically stacked,
The seismic effect is remarkably high against pitching earthquakes, and the width of the groove is wider than the thickness of the foundation. In this way, it is possible to prevent the seismic effect against rolling from being reduced, and it is particularly reliable and has high practical value when applied to a general home building which is easily collapsed by an earthquake.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a basic structure showing an embodiment of the present invention.

FIG. 2 is a schematic vertical sectional view at a position where a groove is filled with a mixed material according to the present invention.

FIG. 3 is a schematic longitudinal sectional view at a position where the cushion material of the present invention is stored and installed.

FIG. 4 is a front view of a cushion material used in the present invention.

FIG. 5 is an exploded perspective view of a part of a cushion material used in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base part 2 Groove part 3 Cushion material 4 Mixing material 5 Base part 6 Base 7 Building base material 8 Waterproof curtain material 31 Hard board material 32 Soft board material 33 Shock absorber 34 Unit cushion material

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Sanae Shoji 5-25 Sumiyoshicho, Numazu City, Shizuoka Prefecture (72) Inventor Kunio Shoji 5-25 Sumiyoshicho, Numazu City, Shizuoka Prefecture (56) References JP-A-51-122816 (JP, A) Jingyo Hei 3-24677 (JP, Y2) Jigyo Hei 3-23005 (JP, Y2) Jiko 61-8125 (JP, Y2) (58) Fields surveyed (Int. Cl. ⁷⁾ , DB name) E02D 27/00-27/52

Claims (3)

(57) [Claims] 1. A cushion material is housed and installed at an appropriate position in a groove formed in a concrete base, and a mixture of glass beads and sand is filled therein, and a building base is installed in the groove. The cushioning material and the mixed material receive the load of the building, and are mainly made of the cushioning material for the pitching caused by the vertical seismic wave, and mainly made of the mixed material for the rolling caused by the horizontal seismic wave. An earthquake-resistant foundation for a building, characterized in that each object is buffered. 2. The earthquake-resistant foundation structure for a building according to claim 1, wherein the cushioning material is formed by vertically stacking a plurality of unit cushioning materials in which a shock absorber is interposed between a hard plate material and a soft plate material. 3. The base structure according to claim 1, wherein the width of the groove is wider than the thickness of the foundation, and the outdoor opening of the groove has a water-blocking structure.