Introduction and awareness of earthquakes and resistant structures

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

2. Structure of Earth
2

3. 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.
3

4. 4

5. Earthquakes affect
RCC
structures too…
Slabs forces the
beam
to bend with it
when
horizontal forces
act.
5

6. 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.
6

7. 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.

8. 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.
8

10. • Seismic Dampers
are of following :
 Viscous Damper
 Friction Damper
 Yielding Damper

12. 12

13. CONCLUSION
 We are only hope of tomorrow’s
constructions.
WE ARE HERE ONLY TO PROVIDE
SAFETY TO PUBLIC TO LEAD THEIR LIFE
HAPPILY.
13

14. ANY QUERIES

15. THANK
YOU…
15