E - Fixed Constructions – 04 – B
Patent
E - Fixed Constructions
04
B
E04B 1/98 (2006.01) E04H 9/02 (2006.01)
Patent
CA 2157942
A device-for seismic isolation is invented by the use of sealed hydrostatic uplift pressure to reduce the loads of a building, structure, or heavy equipment. After the reduced frictional force is overcome the structure undergoes horizontal sliding motions, thereby reducing the seismic induced stresses. The present invention is economical and suitable for all types of buildings, ranging from family homes to power generation stations. It utilizes the space between the Upper and Lower Foundation Mats by dividing it into pressure chambers, fitting the mats with bearing plates, sealing the chambers off, and then pressurizing them by elevated liquid tanks or compressed gas cylinders. Pressure chambers may be allocated underneath asymmetric heavy weights for reducing the danger of excessive torsional in-plane rotation of the Upper Foundation Mat under earthquake. The momentary compression and de-compression of the pressure chambers would regulate the net structural load, thereby counteracting both the main and localized vertical shocks. The reliability and low cost of the present invention will enable seismic isolation to become an affordable household safety feature for people dwelling in high-seismic areas.
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