Design optimization and dynamic analysis of a tensegrity-based footbridge

✍ Scribed by Nizar Bel Hadj Ali; Landolf Rhode-Barbarigos; Alberto A. Pascual Albi; Ian F.C. Smith

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 865 KB
• Volume: 32
• Category: Article
• ISSN: 0141-0296
• DOI: 10.1016/j.engstruct.2010.08.009

✦ Synopsis

Tensegrity structures are spatial structural systems composed of struts and cables with pin-jointed connections. Their stability is provided by the self-stress state in tensioned and compressed members. Although much progress has been made in advancing research into the tensegrity concept, a rapid survey of current activities in engineering practice shows that much of its potential has yet to be accomplished. A design optimization study for a tensegrity-based footbridge is presented in order to further advance the tensegrity concept in modern structural engineering. In the absence of specific design guidelines, design requirements for a tensegrity footbridge are stated. A genetic algorithm based optimization scheme is used to find a cost-effective design solution. The dynamic performance of the tensegrity footbridge is studied through parametric studies. Design results illustrate that the proposed tensegritybased footbridge meets typical static and dynamic design criteria.