Journal of Structural and Construction Engineering

Journal of Structural and Construction Engineering

Investigating the effect of sudden node failure on the progressive collapse analysis of tensegrity barrel vaults

Document Type : Original Article

Authors
Elham Ghandi 1
Vahid Habibi Sheykh Ahmad 2
1 Associate Professor, Engineering Faculty,, University of Mohaghegh Ardabili, Ardabil, Iran
2 Master Graduate, Engineering Faculty, University of Mohaghegh Ardabili, Ardabil, Iran
10.22065/jsce.2025.480331.3532
Abstract
Tensegrity structures are usually composed of a large number of members and connections and have a high degree of uncertainty. Due to the importance of the fact that tensegrity barrel vaults are used in applications such as: meeting halls, passenger terminals, sports stadiums as well as industrial and military applications and in case of any failure in the tensegrity structure of its roof, the possibility of human and financial injuries is very high; Sudden failure of the node (due to: weakness in the connection material or lack of proper connection of members to the node) can lead to local instability and in more critical conditions, lead to overall instability of the structure. As sudden failure in the members of the structure can lead to local or overall instability in the structure; however, due to the connection of several members in one node, sudden failure in one node can lead to more unstable conditions in the structure compared to the state of member failure. Therefore, in this research project, the effect of sudden node failure on the progressive collapse of two-layer tensegrity barrel vault consisting of square simplexes is investigated by performing nonlinear dynamic analyzes in Abaqus software. The results of the analyzes showed that in the analyzes corresponding to the remove of the lower layer nodes, global instability occurs, while for the remove of the upper layer nodes, no analysis has led to the global instability. Therefore, the sudden elimination of bottom layer nodes creates far more unstable conditions than the removal of top layer nodes in the structure. Also, in the analysis corresponding to the failure of the nodes located in the central part of the barrel vault, no global instability occurs. Therefore, the location of the removed node can be effective in the occurrence of instability.
Keywords
Tensegrity barrel vault
Progressive collapse
Sudden failure of the node
Finite element
Nonlinear dynamic analysis

Subjects

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Journal of Structural and Construction Engineering
Volume 12, Issue 08 - Serial Number 97
November 2025
Pages 230-251

  • Receive Date 11 October 2024
  • Revise Date 23 December 2024
  • Accept Date 06 January 2025