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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: Tension & Membrane Structures

Experimental study on the response of a suspendome subjected to the sudden failure of hoop cables

< Table of Contents for Tension & Membrane Structures
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Tension & Membrane Structures
  • Pages: 10
  • Title: Experimental study on the response of a suspendome subjected to the sudden failure of hoop cables
  • Author(s): Xiaoxiang Wang, Hongbo Liu, Zhihua Chen
  • Keywords: suspendome, cable rupture, cable sliding, dynamic response, dynamic amplification factor
Abstract
Suspendome is a kind of highly efficient prestressed structure system. In this study, two tests were conducted on a 10:1 scaled-down suspendome model to investigate the dynamic response and mechanical changes. A special rupture device was invented to realize the sudden failure of cable. The internal force variations of different members were measured and dynamic member-moving procedures around the break region were captured by high-speed video camera. The internal forces of the members near the breaking point experienced large vibrations at the breaking moment. In traditional structural design, the dynamic amplification factor (DAF) value is usually considered as 2.0. However, owing to complex nonlinear effect, the value 2.0 would be unsafe when experienced sudden failure of hoop cables in suspendome structures. It is suggested that refined finite element dynamic analysis should be considered and model test could be conducted to obtain a more precisely result.

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