Isolator Technology for Earthquake
Earthquake-resistant isolator technology (base isolation) is a system designed to isolate buildings from ground vibrations during an earthquake, thus reducing the amount of shock that enters the structure.
Think of it this way: ➡️ The ground moves violently, but the building above it is "slow to move" → so it is more stable.
⚙️ How Earthquake Isolators Work Isolators are installed between: Foundation (bottom) Building structure (top) During an earthquake: The ground moves rapidly Isolators absorb and slow down the vibrations The building moves more gently (doesn't jolt) 👉 This principle is related to inertia (objects tend to maintain a state of rest/motion).
🔩 Types of Earthquake Isolators 1. Lead Rubber Bearing (LRB) Made of rubber + lead core Flexible and can absorb earthquake energy Most commonly used 2. High Damping Rubber Bearing (HDRB) Special rubber with high damping capacity No lead core required Simpler and more durable
3. Friction Pendulum System (FPS) Uses a sliding system like a pendulum Buildings can "slide" during an earthquake Suitable for large buildings 4. Sliding Bearing Uses a smooth surface to reduce vibration Works like a "slide"
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