Earthquake Resistant Structures by T V ASHOK KUMAR ashokthummanapalli@gmail.com

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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