JPH10110441A - Gravel-laid vibration-isolation foundation for building, etc. - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the quakes due to an earthquake, and to prevent damage by spreading gravel all lover between a building and a reinforced concrete board installed under the building and using the whole as a vibration-isolation foundation. SOLUTION: Recessed reinforced-concrete boards 3 working as a wave- absorbing block are mounted on a ground 1 supporting a building 2. Gravel 5 is spread all over the reinforced-concrete boards 3, push-up preventive boards 6 for gravel 5 are placed, and a foundation pressure-resisting board 7 supporting the building 2 is installed. Cushions 4 using a rubber, etc., which have a durable period and are hardly deteriorated and abound in elasticity, are mounted on both side sections of the foundation pressure-resisting board 7 in order to correspond to the horizontal motion of the building 2. Horizontal and vertical motions as seismic waves from the ground 1 are reduced and a high vibration-isolation effect can be dislayed in spite of low cost by setting up gravel 5 among the foundation pressure-resisting board 7 and the reinforced-concrete boards 3 and holding down the building 2 by the cushions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation foundation for cobblestones such as buildings. The present invention can be used for buildings, machines, workpieces, and the like, and has an object to reduce the shaking of an earthquake and prevent damage caused by the earthquake.

[0002]

2. Description of the Related Art During an earthquake, the safety of internal residents is often threatened by the collapse of buildings or the fall of furniture and fixtures.
However, the seismic isolation foundation for this has not been provided so well.

[0003]

DISCLOSURE OF THE INVENTION The present invention provides a method utilizing a gravel which has a relatively simple structure and can be implemented at a low cost.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a seismic isolation foundation for cobblestone of a building or the like, in which a reinforced concrete slab is provided under a building or the like, and gravels are laid between the building and the reinforced concrete slab.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1
Is the ground (supporting ground) that supports the building, 2 is the building, which is made of wood, steel, reinforced concrete, etc.
Built on a supporting foundation. Numeral 3 is a reinforced concrete plate provided on the supporting ground, and has a concave shape and functions like a wave-break block on the shore. Numeral 4 serves as a cushion for horizontal movement of the building, and is made of a material having a long service life and a small deterioration of the material, such as rubber, tire, urethane foam powder and the like, which are rich in elasticity. Numeral 5 is a gravel, which is made of natural stone and artificially baked material. Numeral 6 denotes a plate for preventing the gravel from coming up, which is made of stainless steel or concrete material to make it a slippery material.
Reference numeral 7 denotes a basic pressure plate supporting the building, and the lower portion is smoothly finished. Reference numeral 8 denotes a split stone that is located between the supporting ground and the gravel supporting plate and is constructed as needed. Reference numeral 9 denotes a topsoil on the cushioning material 4 which is at the same height as the ground surface.

According to the present invention, a gravel 5 is provided between a foundation pressure plate 7 and a reinforced concrete plate 3 corresponding to a wave-eliminating block on the shore to reduce horizontal and vertical motions, which are seismic waves from the ground 1, Is pressed by the cushion 4 and the upper part is finished with sand having a low specific gravity. In addition, a spill-prevention plate, which is a material for preventing the shingles from rising at the bottom of the building foundation, is provided.

[0007]

According to the present invention, the synergistic effect of the structures such as the gravel laid below, the horizontal cushion, the reinforced concrete panel, and the foundation pressure plate can be produced at a low cost, but the seismic isolation foundation of the gravel gravel of the building or the like that produces a high effect can be obtained. Can be

[Brief description of the drawings]

FIG. 1 is a sectional view of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Earth 2 Building 3 Reinforced concrete board 4 Cushion 5 Gravel 6 Anti-climbing plate 7 Base pressure board 8 Split stone 9 Lightweight sand

Claims (1)

[Claims] 1. A seismic isolation foundation for cobblestone of a building or the like, in which a reinforced concrete slab is provided under a building or the like, and gravels are laid between the building and the reinforced concrete slab.