Seismic Isolation for High-CG Structures: Patent-Based Solution
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Summary
Problems
Eccentrically constructed ground-supported structures, such as circuit breakers, face significant challenges in withstanding seismic loads due to high center of gravity and multi-directional load inputs, leading to increased susceptibility to damage and costly repairs, as existing seismic isolation methods like wire rope isolators are inadequate in compensating for these complex load conditions.
Innovation solutions
A seismic isolation assembly comprising a first and second support plate with wire rope isolators and angularly disposed linear dampers, including viscous hydraulic dampers, to provide additional damping and mitigate multi-directional load inputs, allowing for adjustable damping characteristics to suit various structures and loading conditions.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If wire rope isolators are used for seismic isolation, then isolation from compressive, tensile and shear loads is achieved, but multi-directional load inputs from high-CG and eccentric structures cannot be adequately compensated
Why choose this principle:
The patent combines wire rope isolators with linear dampers into a hybrid seismic isolation system. The wire rope isolators provide isolation from compressive, tensile and shear loads, while the linear dampers compensate for multi-directional load inputs, creating a more comprehensive isolation solution that addresses the limitations of wire rope isolators alone.
Principle concept:
If wire rope isolators are used for seismic isolation, then isolation from compressive, tensile and shear loads is achieved, but multi-directional load inputs from high-CG and eccentric structures cannot be adequately compensated
Why choose this principle:
The linear dampers are designed to provide multi-directional damping capabilities, allowing the system to handle various loading conditions including seismic loads, environmental loads, and operational loads. This multi-functional approach enables the isolation assembly to adapt to different structural configurations and loading scenarios.
Application Domain
Data Source
AI summary:
A seismic isolation assembly comprising a first and second support plate with wire rope isolators and angularly disposed linear dampers, including viscous hydraulic dampers, to provide additional damping and mitigate multi-directional load inputs, allowing for adjustable damping characteristics to suit various structures and loading conditions.
Abstract
A seismic isolation assembly is defined by a first support plate and a second support plate disposed in parallel relation with a spacing being provided between the support plates. The first support plate is connected to ground and the second support plate is attached to a structure to be isolated. A set of wire rope isolators are disposed between the first and second support plates as well as at least one linear damper that is angularly disposed and mounted between the first and second support plates.