Investigation of the relationship between intensity measures and engineering demand parameters of cable-stayed bridges using intra-plate earthquakes
ISSN: 0264-4401
Article publication date: 18 September 2020
Issue publication date: 17 June 2021
Abstract
Purpose
The purpose of the study is to investigate and reveal this relationship of various engineering demand parameters (EDPs) of this structural type and intensity measures (IMs) under intra-plate earthquakes.
Design/methodology/approach
The nonlinear finite element model used was calibrated first to the existing results of the shaking table test to verify the modeling technique.
Findings
This paper investigated the relationship between intensity measures and various engineering demand parameters of cable-stayed bridges using intra-plate earthquakes. The correlation analysis and Pearson coefficient are used to study the correlation between EDPs and IMs. The results showed that peak ground velocity (PGV)/peak ground acceleration, peak ground displacement and root-mean-square of displacement showed weak correlation with IMs. PGV, sustained maximum velocity, a peak value of spectral velocity, A95 parameter, Housner intensity and spectral acceleration at the fundamental period, the spectral velocity at the fundamental period and spectral displacement at the fundamental period were determined to be better predictors for various EDPs.
Originality/value
This paper investigated the correlation between the intensity measures of intra-plate earthquakes with the seismic responses of a typical long-span cable-stayed bridge in China. The nonlinear finite element model used was calibrated to the existing results of the shaking table test to verify the modeling technique. In total, 104 selected ground motions were applied to the calibrated model, and the responses of various components of the bridge were obtained. This study proposed PGV as the optimal IM.
Keywords
Acknowledgements
This research was supported by the Ministry of Science and Technology of China under Grant No. SLDRCE19-B-19; The National Natural Science Foundation of China under Grant No. 51778471, 51978512; and Transportation science and technology plan of Shandong province (2017B75).
Citation
He, J.-H., Pang, Y.-T., Dang, X. and Yuan, W.-C. (2021), "Investigation of the relationship between intensity measures and engineering demand parameters of cable-stayed bridges using intra-plate earthquakes", Engineering Computations, Vol. 38 No. 4, pp. 1920-1932. https://doi.org/10.1108/EC-05-2020-0255
Publisher
:Emerald Publishing Limited
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