Experimental study on seismic control of towers in cable-supported bridges by incorporating fluid viscous dampers between sub-towers. Issue 10 (July 2020)

• Record Type: Journal Article
• Authors: Zhou, Peng; Liu, Min; Li, Suchao; Li, Hui; Song, Gangbing
• Is Part Of: Advances in structural engineering. Volume 23:Issue 10(2020)
• Page Start: 2086
• Page End: 2096
• Publication Date: 2020-07
• Subjects: fluid viscous dampers -- seismic control -- shaking table tests -- towers; Structural engineering -- Periodicals; Construction, Technique de la; Structural engineering; Periodicals; 624.1
• DOI: 10.1177/1369433220908031
• Languages: English
• ISSNs: 1369-4332

Abstract

In this article, the seismic control of towers incorporated with fluid viscous dampers between sub-towers is investigated experimentally. To replace one entire tower, an alternative scheme consisting of four separate sub-towers is first proposed. Fluid viscous dampers are utilized as energy dissipation devices to be installed between sub-towers. Experimental tests are conducted to study the damping force characteristics. Three control strategies with various distributions of these dampers between sub-towers are developed. Then, a series of shaking table tests are carried out to evaluate the control performance of the proposed control strategies. Different earthquake records are adopted as seismic loadings. Experimental results clearly show a remarkable reduction in the towers seismic responses, including the accelerations, relative displacements, and strains. Rather than attaching dampers in concentrated ways, the strategy of distributing dampers uniformly behaves better.