| Popis: |
Two alternative passive seismic protection technologies have been combined in a single experiment to assess their synergy. The first, a nonlinear-elastic posttensioned tendon frame, uses steel tendons to connect structural elements. Joints can rotate elastically allowing large recoverable interstory sway. Such structures have limited energy dissipation capabilities but are able to re-centre themselves after a seismic event. The second, a metallic shear panel energy dissipator has a large energy dissipation capacity but, as it is unable to self-centre, may impart a residual sway or offset to a structure after a seismic event. This paper presents a series shaking table tests conducted at 1/4 scale to assess the coaction of these technologies under realistic seismic loading. Repeat testing is used to investigate the fatigue lifecycle. While challenging to perform, the tests reveal the technologies to be complementary, each contributing beneficial characteristics to the global response. |
