logging in or signing up Earthquake Resistant Design mittal.mayur91 Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 1058 Category: Education License: Some Rights Reserved Like it (0) Dislike it (0) Added: March 26, 2012 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Earthquake Resistant Designs: By M. Mayur IVth CIVIL - SIETK, PUTTUR. Earthquake Resistant Designs 1Structure of Earth: 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. 2What are Earthquakes? : 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. 3PowerPoint Presentation: 4 Origin of Earthquakes: Earthquakes - Plate Tectonic Forces. Theory of Plate tectonic forces - He stated that continents moved from their original position - Continental Drift . Origin of Earthquakes 5 Alfred Wegener.: Different boundaries - tectonic forces induces Earth: Divergent boundary, Convergent, Transform boundaries. 6Seismology: 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. 7PowerPoint Presentation: 8Terms of EQ’s:: 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: Earthquakes affect RCC structures too… Slabs forces the beam to bend with it when horizontal forces act. 10Earthquake resistant designs: 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 11Popular Earthquake resistant Techniques: Popular Earthquake resistant Techniques 12 Earthquake may not be able to damage entire building but it damages members of it. So special techniques are adopted: Base Isolation Devices and Seismic Dampers.Introduction of Resistant techniques: Introduction of Resistant techniques 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 Base Isolation Devices: Base Isolation Devices 14Base Isolation Devices: 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. 15PowerPoint Presentation: 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. 16PowerPoint Presentation: 17PowerPoint Presentation: 18PowerPoint Presentation: 19PowerPoint Presentation: 20Seismic Dampers: Seismic Dampers 22SD’s in structures:: SD’s in structures: 23PowerPoint Presentation: 24PowerPoint Presentation: Dampers are of: Viscous Damper Friction Damper Yielding Damper Note points:: Note points: BID SD’S separating structures from ground by means of devices. Can be done when structure is already constructed, but it is costly. Cheaper compared to Seismic Dampers. additional systems introduced in structures. even when structure is completed, systems can be introduced. Very costly, since linked with hardware programmes. 28Frames Resisting EQ’: Frames Resisting EQ’ 29PowerPoint Presentation: 30PowerPoint Presentation: 31Increase in Seismic Performance: Increase in Seismic Performance Quality Control in Construction. 32: 33PowerPoint Presentation: 34CONCLUSION: CONCLUSION We are only hope of tomorrow’s constructions. WE ARE HERE ONLY TO PROVIDE SAFETY TO PUBLIC TO LEAD THEIR LIFE HAPPILY. 35PowerPoint Presentation: THANK YOU… 36PowerPoint Presentation: 37 Any clarifications ? You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.