Advanced Steel Construction

Vol. 15, No. 4, pp. 386-397 (2019)




Ming Zhang1, *, Yao-Peng Liu2, Zhi-Xiang Yu1 and Gerry Parke3

1 School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China (corresponding author)

2 Department of Civil and Environmental Engineering, The Kong Kong Polytechnic University, Hong Kong, China

3 Department of Civil and Environmental Engineering, University of Surrey, Guildford, Surrey GU2 7XH, UK

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

Received: 22 April 2019; Revised: 12 August 2019; Accepted: 15 August 2019




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A new seismic failure criterion is proposed for the Kiewit-8 (K8) dome subjected to earthquakes based on key structural parameters. Firstly, the K8 dome models were built in the finite-element package ANSYS after considering the key struc-tural design parameters. Secondly, the incremental dynamic analysis was undertaken resulting in a typical structural dam-age index Ds. These were introduced to undertake the nonlinear dynamic response history analyses at each increased level of seismic records intensity and permitted the calculation of collapse loads of domes. Three hundred three-dimensional seismic records based on the main influential factors of ground motion were selected as input seismic waves. Thirdly, the lognormal distribution was selected to appraise collapse loads to gain the dynamic collapse fragility curves for domes after comparing three maximum likelihoods. Then, the lower bound collapse loads with 95% probability of non-exceed-ance changing with structural parameters were determined. Finally, relationships between lower bound collapse loads and five key structural parameters were separated out by using numerical matching methods, followed by a new seismic failure criterion for all the relationships including the five key structural parameters and a safety factor of 1.5. The new seismic failure criterion will contribute to the safe design and construction of these excellent space structures worldwide, particu-larly in the countries which are prone to earthquakes.



Domes, New seismic failure criterion, Collapse loads, Key structural parameters, 95% probability of non-exceed-ance


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