Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Improving brace member seismic performance with amplified-deformation lever-armed dampers
Abstract This study focused on the development and validation of a novel brace design that incorporated a hinged truss member and a set of lever-armed damper (LAD), namely LAD-Brace, for structural performance enhancement. The lever-armed damper was designed with adequate rotation mechanism to generate amplified-deformation and uniform yield zones in the tapered energy dissipation plate for efficient energy dissipation. A series of cyclic loads and constant peak amplitude tests were conducted on LAD-Braces with various geometries in the energy dissipation plates. Analytical expressions for yield strength estimation were derived and effectively validated by the test results. Cyclic load test results showed that adequate strength, effective equivalent viscous damping and significant energy dissipation were simultaneously achieved which justified the design applicability for earthquake-resistant purposes. Investigation through constant peak amplitude tests revealed that LAD-Braces, when designed with adequate geometries, possessed further seismic resilience after experiencing major earthquake excitation, thus validated the proposed design effectiveness and robustness.
Graphical abstract Display Omitted
Highlights A novel brace design to improve energy dissipation efficiency was proposed and validated. Important experimental information was presented. Analytical expressions for yield strength estimation were derived and effectively validated by the test results. Effective viscous damping and energy dissipation were achieved in the proposed brace design. Effective seismic performance and post-earthquake resilience of brace member was compared and validated
Improving brace member seismic performance with amplified-deformation lever-armed dampers
Abstract This study focused on the development and validation of a novel brace design that incorporated a hinged truss member and a set of lever-armed damper (LAD), namely LAD-Brace, for structural performance enhancement. The lever-armed damper was designed with adequate rotation mechanism to generate amplified-deformation and uniform yield zones in the tapered energy dissipation plate for efficient energy dissipation. A series of cyclic loads and constant peak amplitude tests were conducted on LAD-Braces with various geometries in the energy dissipation plates. Analytical expressions for yield strength estimation were derived and effectively validated by the test results. Cyclic load test results showed that adequate strength, effective equivalent viscous damping and significant energy dissipation were simultaneously achieved which justified the design applicability for earthquake-resistant purposes. Investigation through constant peak amplitude tests revealed that LAD-Braces, when designed with adequate geometries, possessed further seismic resilience after experiencing major earthquake excitation, thus validated the proposed design effectiveness and robustness.
Graphical abstract Display Omitted
Highlights A novel brace design to improve energy dissipation efficiency was proposed and validated. Important experimental information was presented. Analytical expressions for yield strength estimation were derived and effectively validated by the test results. Effective viscous damping and energy dissipation were achieved in the proposed brace design. Effective seismic performance and post-earthquake resilience of brace member was compared and validated
Improving brace member seismic performance with amplified-deformation lever-armed dampers
Sarassantika, I.P. Ellsa (Autor:in) / Hsu, H.-L. (Autor:in)
01.03.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| British Library Conference Proceedings | 2002
Improving Seismic Performance of Asymmetric Buildings with Viscous Dampers
| British Library Conference Proceedings | 2002