Static structures (e.g. – buildings) – Means compensating earth-transmitted force – Relative motion means between a structure and its foundation
Patent
1991-06-03
1992-10-06
Scherbel, David A.
Static structures (e.g., buildings)
Means compensating earth-transmitted force
Relative motion means between a structure and its foundation
248560, 248561, 248566, 248573, 248581, E02D 3500
Patent
active
051521105
ABSTRACT:
A damping subsystem protects a structure from the effects of seismic disturbances and employs at least a first pair of first and second damping and transformation mechanisms including respective, associated first dampers oriented in parallel relationship in a first direction and oppositely disposed relatively to the center of gravity of the structure and mechanically connected between respectively corresponding portions of the structure and the foundation in relatively inverse relationship. Each mechanism transforms a force transferred to the associated first damper from the foundation in the first direction and/or any lateral, relative displacement of the corresponding structure and foundation portion in the first direction to a corresponding force and/or displacement, respectively, in a second direction perpendicular to the first direction, each also performing the reverse transformation. A mechanical interconnection between the first and second damping and transformation mechanisms transfers any such transformed force and/or displacement of the second direction from one to the other of the pair of first and second damping and transformation mechanisms, thereby to impede rotation of the structure relatively to the foundation. The respective, associated first dampers of the pair of mechanisms provide individually controllable damping of lateral displacement between the corresponding structure and foundation portions in the first direction.
REFERENCES:
patent: 3418768 (1968-12-01), Cardan
patent: 3538653 (1970-11-01), Meckler
patent: 3632077 (1972-01-01), Hall et al.
patent: 3796017 (1974-03-01), Meckler
patent: 4033566 (1977-07-01), Petersen
patent: 5005326 (1991-04-01), Ishimaru et al.
patent: 5035394 (1991-07-01), Haak
Leno Matthew E.
Scherbel David A.
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