Static structures (e.g. – buildings) – Means compensating earth-transmitted force
Patent
1997-12-11
1999-10-12
Friedman, Carl D.
Static structures (e.g., buildings)
Means compensating earth-transmitted force
521676, 521678, E02D 2734, E04B 198, E04H 902
Patent
active
059640669
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
Technical Field and Disclosure of the Invention
This invention has been designed as a building capable of withstanding both horizontal and vertical shaking in a big earthquake.
SUMMARY OF THE INVENTION
There has been enormous expense required for constructing an earthquake-proof structure. The object of the present invention is to reduce the expense greatly. Consequently, a large demand for the foundation, and a building including this foundation of the present invention, can be expected. What is specially elaborated in this invention resides in a foundation on which posts are supported.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a schematic diagram showing the condition of posts 3 placed via hemispherical steel members 2 on a flat steel plate 1 fixed on a ground surface;
FIG. 2 is a schematic side elevation showing a structure of a base portion of a post placed on a hemispherical member 2, which structure comprises a post root portion 5, and a post trunk portion 6 formed separately from each other via a cushioning member 4;
FIG. 3 is a schematic side elevation showing the same as shown in FIG. 2 with additionally provided four struts 7 further supporting the post trunk portion 6;
FIG. 4 is a schematic side elevation of a simple cushioning member in which a post root portion 5 and a post trunk portion 6 offer a cushioning function (function of a shock absorber) in which a space 8 contains water or an oil; and a reference numeral 9 denotes a discharge port for such a liquid functioning as a shock absorber, and 10 a liquid injection port;
FIG. 5 is a schematic plan showing the way of combining square and round post root portions 5 and post trunk portions 6;
FIGS. 6 and 7 are schematic side elevations showing antislipping projections 11 of a ripple pattern formed on the surfaces of steel plates 1;
FIG. 8 is a schematic plan of what are shown in FIGS. 6 and 7; and
FIG. 9 is a schematic side elevation showing the condition of posts connected together at their root portions by a member 13, and the condition of a basement floor 14 set on such members 13 used as beams.
DETAILED DESCRIPTION OF THE INVENTION
The foundation is formed by placing posts 3 via hemispherical steel members 2 on a flat steel plate 1 fixed on the ground surface as shown in FIG. 1. Consequently, the movement of the hemispherical members on the steel plate is made under the same conditions in all directions. An oil spread on the surface of the steel plate keeps small the sliding frictional force occurring between the hemispherical members and steel plate. This prevents the hemispherical members, i.e., a building standing thereon from moving in accordance with a lateral movement of the ground surface.
Regarding the vertical shaking of the ground, the structures of post base portions placed on the hemispherical members shall comprise post root portions 5 and post trunk portions 6 separately formed via cushioning members 4 as shown in FIG. 2, or, in addition to the above-mentioned separated structures, four struts 7 further supporting the post trunk portions 6 as shown in FIG. 3. The purpose of using these struts 7 resides in the following. When a load on the post trunk portions 6 is comparatively large, the cushioning members 4, only on which the post trunk portions 6 are supported, receive a large load constantly, so that the parts have to be replaced very frequently since there is a limit to the elastic fatigue resistance of the cushioning members. Therefore, in order to reduce the cost, the foundation is formed so that the post trunk portions 6, i.e., a building is normally supported on these four struts 7, and so that the cushioning members 4 function only when shaking is so great that it will damage the building should it occur. In a method of achieving this object, the fracture strength of the struts 7 is set equal to a target seismic intensity (seismic intensity at which the struts 7 are desired to be broken). When an earthquake the seismic intensity of which is not lower than the set level then occur
REFERENCES:
patent: 2001169 (1935-05-01), Wallace
patent: 2597800 (1952-05-01), Hussman
patent: 3794277 (1974-02-01), Smedley et al.
patent: 4533109 (1985-08-01), Delam
patent: 4662133 (1987-05-01), Kondo
patent: 4726161 (1988-02-01), Yabhoubian
patent: 4883250 (1989-11-01), Yano et al.
patent: 5056280 (1991-10-01), Shustov
patent: 5310156 (1994-05-01), Matsumura et al.
patent: 5363610 (1994-11-01), Thomas et al.
patent: 5740652 (1998-04-01), Inone et al.
Dorsey Dennis L.
Friedman Carl D.
LandOfFree
Earthquake-proof foundation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Earthquake-proof foundation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Earthquake-proof foundation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-644324