Experimental Study on Structural Control for Seismic Loads Using Passive and Active Devices

by Keiji Shiba, Shimizu Corp, Japan,
Yutaka Nakamura, Shimizu Corp, Japan,
Haruhiko Yokota, Shimizu Corp, Japan,

Abstract: The feasibility of controlling the responses of structures against seismic loads is investigated through some experiments and numerical analyses for both the passive and active control methods. As a passive control device, a viscoelastic damper (VED) made of a viscoelastic material (VEM) is proposed. As an active control device, an active mass damper (AMD) system is investigated. The effectiveness of these devices were confirmed through shaking table experiments using a reduced six-story steel frame and a dynamic loading test. From the results of a numerical analysis, the responses of a 25-story building were found to be reduced to 50% in absolute acceleration by attaching VED in each story.

Subject Headings: Seismic loads | Earthquake resistant structures | Structural control | Structural analysis | Seismic tests | Numerical analysis | Damping

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