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Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
Earthquake Resistant Designs
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Earthquake Resistant Designs

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This is the presentation prepared accordingly to the full paper provided with my ID.

This is the presentation prepared accordingly to the full paper provided with my ID.

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  • 1. By M. MayurIVth CIVIL - SIETK, PUTTUR. 1
  • 2. Structure of Earth Earth - three layers - Crust, Mantle, Core. Crust - surface of Earth, Mantle – second inner part of the Earth, Core - most inner part of the 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. Origin of Earthquakes Earthquakes - Plate Tectonic Forces. Theory of Plate tectonic forces - He stated that continents moved from their original position - Continental Drift. 5
  • 6.  Different boundaries - tectonic forces induces Earth: Divergent boundary, Convergent, Transform boundaries. 6
  • 7. Seismology When earthquakes occur, waves travel in Earth in form of vibrations, such waves are called Seismic Waves. Study of such waves - Seismology. Instrument measuring seismic waves - Seismometer. Graphs given by that seismometer - Seismic Graph. 7
  • 8. 8
  • 9. Terms of EQ’s: Seismic Loading : Main cause of Earthquakes Seismic Performance : Structure’s ability - functions - safety and serviceability - exposure - earthquake. Seismic Analysis : Major intellectual tool – understand seismic performance of structures. 9
  • 10.  Earthquakes affect RCC structures too… Slabs forces the beam to bend with it when horizontal forces act. 10
  • 11. 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 11
  • 12. Popular Earthquake resistantTechniques 12
  • 13. Introduction of Resistanttechniques Thought - Base Isolation Devices - separate building from ground by some rubber devices. Seismic dampers - special devices - introduced in building - absorb the energy - produced by seismic waves. 13
  • 14. Base Isolation Devices 14
  • 15. Base Isolation DevicesBase 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. 15
  • 16.  Control Force Devices Active Tuned Mass Dampers - natural extension – experiments indicate 25% less damage. Tendon Control – used even for active devices – works when active devices are off – act by resisting tension in structure. 16
  • 17. 17
  • 18. 18
  • 19. 19
  • 20. 20
  • 21. Seismic Dampers 22
  • 22. SD’s in structures: 23
  • 23. 24
  • 24.  Dampers are of:  Viscous Damper  Friction Damper  Yielding Damper
  • 25. Note points: BID SD’S separating structures from  additional systems ground by means of devices. introduced in structures. Can be done when structure  even when structure is is already constructed, but it completed, systems can be is costly. introduced. Cheaper compared to  Very costly, since linked with Seismic Dampers. hardware programmes. 28
  • 26. Frames Resisting EQ’ 29
  • 27. 30
  • 28. 31
  • 29. Increase in SeismicPerformance Quality Control in Construction. 32
  • 30. 33
  • 31. 34
  • 32. CONCLUSION We are only hope of tomorrow’s constructions. WE ARE HERE ONLY TO PROVIDE SAFETY TO PUBLIC TO LEAD THEIR LIFE HAPPILY. 35
  • 33. THANK YOU… 36
  • 34. 37

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