Seismic shield

Details Seismic shield Seismic shield

1981-10-26

1984-11-27

Perham, Alfred C.

Static structures (e.g., buildings)

Means compensating earth-transmitted force

Relative motion means between a structure and its foundation

521691, 52742, E04H 902, E02D 2734

Patent

active

044844239

ABSTRACT:
A method and structure for partially isolating a building or other structure from the effects of an earthquake is disclosed. A generally vertical trench is formed spaced apart from the building and between the building and a known or suspected earthquake source. The trench is at least 100 meters deep and is filled with a material having a low shear modulus such as a fluid. The fill material inhibits the transmission of seismic waves, particularly S waves, through the material and further prevents the failure of the trench walls.

REFERENCES:
patent: 1728736 (1929-09-01), Shergold
patent: 4180350 (1979-12-01), Watts

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