This technology features a strip-type steel damper with multiple strips spaced evenly between two mounting plates. Each strip is designed with alternating curved sections of reduced and increased width, where the ends of each strip are wider than the center.
Strip-type steel dampers dissipate energy through strip bending under horizontal loads. Conventional uniform-width strips suffer from concentrated damage at the top and bottom, limiting energy dissipation. While variable-width dampers have been proposed, they struggle to provide the high deformation capacity essential for structural ductility.
This technology uses multiple reduced-section zones that act like hinges to accommodate greater deformation, while expanded-section zones maintain structural strength. A first resistance unit connects top and bottom slits diagonally, and an S-shaped elastic second resistance unit connects overlapping dampers to distribute stress. Ideal for steel braced frames, seismic retrofitting, and public buildings like schools and hospitals, it prevents premature failure and ensures continuous energy absorption during major earthquakes.
This invention was developed with support from the Ministry of Science and ICT’s Laboratory for 3D Architectural Information and Image Processing Technology.
WO2019-135660A1
