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Patent Details

Indian Institute of Technology (IIT) Roorkee 
Friction based energy dissipation device for seismic protection 
Manish Shrikhande 
Indian Institute of Technology (IIT) Roorkee 
Application type:
Applied - 2017-10-10 
Application Number:
Applied at:
Entered by:
Indian Institute of Technology (IIT) Roorkee 
Open ground floor is a common feature in multistory buildings. This provides easy access to the spaces within to be used for vehicle parking and/or community gatherings. However, these open spaces also introduce vertical irregularity causing severe distress in the columns during earthquake ground motions. A friction damper has been designed and tested to absorb the excess energy during earthquake induced vibrations while allowing the access to open spaces without any obstruction. These dampers have been tested for the maximum considered earthquake (MCE) for the most severe zone (Zone-V) of India and the seismic demand on the columns has been found to reduce by approximately 50%under the test conditions. This damper assembly can be easily deployed in existing structures as well by virtue of its unique clamp-on design. Incorporation of this damper assembly will lead to enhanced seismic resilience while reducing overall costs of providing a safer open ground floor. 

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