Steel and Composite Structures

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Analysis of key elements of single-layer dome structures against progressive collapse

  • Zhang, Qian (National Prestress Engineering Research Center, Key Laboratory of C & PC Structures of Ministry of Education Southeast University) ;
  • Huang, Wenxing (National Prestress Engineering Research Center, Key Laboratory of C & PC Structures of Ministry of Education Southeast University) ;
  • Xu, Yixiang (School of Aerospace, The University of Nottingham Ningbo China) ;
  • Cai, Jianguo (National Prestress Engineering Research Center, Key Laboratory of C & PC Structures of Ministry of Education Southeast University) ;
  • Wang, Fang (National Prestress Engineering Research Center, Key Laboratory of C & PC Structures of Ministry of Education Southeast University) ;
  • Feng, Jian (National Prestress Engineering Research Center, Key Laboratory of C & PC Structures of Ministry of Education Southeast University)
  • Received : 2020.04.02
  • Accepted : 2022.01.19
  • Published : 2022.01.25
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Abstract

The analysis of the progressive collapse resistance of structures is a well-known issue among structural engineers. Large-span reticulated dome structures are commonly utilized in large public buildings, necessitating research into their progressive collapse resistance to assure user safety. The most significant part of improving the structural resilience of reticulated domes is to evaluate their key elements. Based on a stiffness-based evaluation approach, this work offers a calculating procedure for element importance coefficient. For both original and damaged structures, evaluations are carried out using the global stiffness matrix and the determinant. The Kiewitt, Schwedler, and Sunflower reticulated domes are investigated to explore the distribution characteristic of element importance coefficients in the single-layer dome structures. Moreover, the influences of the load levels, load distributions, geometric parameters and topological features are also discussed. The results can be regarded as the initial concept design reference for single-layer reticulated domes.

Keywords

Acknowledgement

The work presented in this article was supported by the National Natural Science Foundation of China (Grant No. 51822805, 51878147and U1937202), Postgraduate Research & Practice Innovation Program of Jiangsu Province (SJKY19_0091), Scientific Research Foundation of Graduate School of Southeast University (YBPY2016) and the China Scholarship Council. We would like to thank the anonymous reviewers for their helpful remarks.

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