Seismic Metamaterials

Reference number 7237

Sectors: Industrials

Industries: Equipment & Components

Proposed use

Ground vibration has an impact upon the structural integrity of buildings and structures. Our invention can cloak a building from any small tremors and is particularly effective with low, continuous, droning vibrations such as rail or tram lines and similar.  The invention can also to be used to protect certain types of buildings that may be affected by tremors and for broader seismic protection up to 30 Hz.

Problem addressed

Presently, the available technologies in the market are based on vibration isolation of structures and are difficult to implement because they involve the modification of the building itself. Our invention provides a solution to this problem: Shielding vulnerable structures using large-scale metamaterials which inhibit the propagation of incoming seismic waves or ground vibration through interference effects can help to protect a much wider area without any direct modification to buildings.

Technology overview

The vibration defence structure consists of a set of columns (no specific pattern required) embedded in regolith and in contact with bedrock, positioned outside of a lateral perimeter of the building. This shield has a stop band for seismic waves of 0Hz to 30Hz, which means that waves or vibration are reflected and partially absorbed by the shield.

Benefits

  • Provides protection to buildings/structures over a wider range of frequencies
  • Provides protection from low-frequency vibrations, for example from trains, machinery and road traffic
  • Can be used to shield critically important buildings such as nuclear power plants, dams, bridges, hospitals, and refineries
  • Does not involve any change to the building structure

Intellectual property information

Patents: EP3529420, IN34/2019, US20200048858, CN110506144

Inventor

Professor Richard Craster

Dean of the Faculty of Natural Sciences
Faculty of Natural Sciences

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Contact us about this technology



Contact

Luis Gomez Sarosi

Industry Partnerships and Commercialisation Officer, Natural Sciences

Dr Luis Gomez Sarosi is Industry Partnerships and Commercialisation Officer for the Faculty of Natural Sciences at Imperial College London.

Contact Luis

l.gomez-sarosi@imperial.ac.uk

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