Anti-seismic shields

Details Anti-seismic shields Anti-seismic shields

1991-03-28

1992-12-29

Chilcot, Jr., Richard E.

Static structures (e.g., buildings)

Means compensating earth-transmitted force

Relative motion means between a structure and its foundation

E02D 2734

Patent

active

051740826

ABSTRACT:
This invention relates to shields for protecting a civil engineering work from the destructive effects of earthquakes. A shield according to the invention comprises a plurality of individual islands which are implanted in the ground around the work to be protected and which present mechanical properties different from those of the ground in order to attenuate the seismic surface waves. The islands may be masses of ground compressed between an anchoring means driving in the ground and a sole placed on the ground and connected to the anchoring means by a connecting means under tension. The islands may also be bores or wells filled with granular or pulverulent materials. One application of the invention is the protection of industrial plants or dwellings in order to avoid destruction thereof by earthquakes.

REFERENCES:
patent: 4484423 (1978-09-01), McClure, Jr.
Patent Abstracts of Japan--vol. 10. No. 257(M-513) (2313) Sep. 3, 1986, and JP-A-61 83711 (Ozawa Concrete Kokgyo K.K.) Apr. 28, 1986.
Patent Abstracts of Japan, vol. 9 No. 307(M-435)(2030) Dec. 4, 1985 and JP-A-60 14412 (Takechi Koumushiyo K.K.) Jul. 30, 1985.
Japan Abstracts of Japan, vol. 8, No. 180(M--318)(1617) 18 Aout 1984, and JP-A-59 72326 (Kumagaigumi KK) Apr. 24, 1984.

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