Static structures (e.g. – buildings) – Means compensating earth-transmitted force – Relative motion means between a structure and its foundation
Patent
1978-05-16
1981-02-10
Friedman, Carl D.
Static structures (e.g., buildings)
Means compensating earth-transmitted force
Relative motion means between a structure and its foundation
52152, 52226, 52247, E02D 2734
Patent
active
042493528
ABSTRACT:
A tank adapted to withstand the horizontal displacement forces and overturning moments which act upon the side walls thereof under earthquake conditions is disclosed. The tank includes a base and cylindrical side walls and a plurality of tendons are provided each of which is attached to the cylindrical side wall at one end and to an anchor fixedly positioned in the concrete base. Each of the tendons is stressed and the stress in the tendon acts downwardly and in some embodiments radially outwardly on the tank wall and substantially restrains the wall from horizontal displacement and protects the side walls from the stresses developed due to the overturning moment. Steel-wall and prestressed concrete wall tanks, particularly for cryogenic liquids, can be adapted according to the invention.
A double-wall storage tank for cryogenic liquids is also shown wherein a plurality of stressed tendons are distributed around the inner wall and act outwardly and downwardly on the upper portion of the inner wall and wherein a second plurality of stressed tendons are attached to the upper part of the outer wall and act inwardly and downwardly thereupon.
REFERENCES:
patent: 1166987 (1916-01-01), Hedrick
patent: 1167790 (1916-01-01), Benson
patent: 1220227 (1917-03-01), Houff
patent: 1400251 (1921-12-01), Cotf
patent: 2193380 (1940-03-01), Prize
patent: 4069642 (1978-01-01), Hendriks
Friedman Carl D.
Preload Technology, Inc.
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