Earthquake Resistant Structures by T V ASHOK KUMAR [email protected]
Structure of Earth
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What are Earthquakes?
Sudden movement - surface of the earth - may be tiny or several feet.
Enormous amounts - of energy released – greater - Nuclear Bomb.
Sudden shift of rock - fracture of Earth.
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Earthquakes affect RCC
structures too…
Slabs forces the beam
to bend with it when
horizontal forces act.
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Earthquake resistant designs
• Design - but it is analysis of forces - buildings due to loads acting on it.
• If a building is enough to resist the earthquake, then such building is called Earthquake resistant structure.
• Such design is called Earthquake resistant designs.
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Earthquake Resistant Techniques :Earthquake may not be able to damage entire
building but it damage members of it. so special techniques are adopted
1) Base isolation devices :Thought - Base Isolation Devices - separate building from ground by some rubber devices.2) Sesimic dampers :Special devices - introduced in building - absorb the energy - produced by seismic waves.
Base Isolation Devices
Base isolation Devices - Active Control System which contains:
Sensors - measure external excitation - structural response.
Computer hardware and software compute control forces –observed excitation.
Actuators – provide – necessary control forces.
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• Seismic Dampers are of following :
Viscous Damper
Friction Damper
Yielding Damper
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CONCLUSION We are only hope of tomorrow’s
constructions.
WE ARE HERE ONLY TO PROVIDE SAFETY TO PUBLIC TO LEAD THEIR LIFE
HAPPILY.
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ANY QUERIES
THANK YOU…
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