Advanced Steel Construction

Vol. 15, No. 1, pp. 109-115(2019)




Li-Min Tian 1, *, Jian-Peng Wei 1 and Ji-Ping Hao 1

1 School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an, China

*(Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it. )

Received: 31 August 2017; Revised: 21 February 2018; Accepted: 28 March 2018



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In recent years, researchers have increasingly reported the progressive collapse of long-span spatial grid structures. However, research on long-span spatial grid structures, especially single-layer spatial grid structures, remains limited. Thus, this study conducted an incremental dynamic analysis to develop a suitable method for evaluating single-layer spatial grid structures. The method uses a quantitative evaluation index called the collapse margin ratio. Engineering cases were analysed to validate the proposed method. For instance, the proposed method was used to evaluate the progressive collapse of the main stadium of the Shenzhen Universiade Sports Centre. The results showed that the roof of the structure has good resistance against progressive collapse from the perspective of quantitative analysis, even though the cantilever length reached 51.9–68.4 m at some locations, and the novel method is not restricted by the structural form. Thus, the method can be used to quantitatively evaluate a structure’s resistance to collapse.



Single-layer spatial grid structure, Progressive collapse, Evaluation method, Incremental dynamic analysis, Vulnerability curve, Collapse margin ratio


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