Time-varying seismic resilience analysis of coastal bridges by considering multiple durability damage factors
International Journal of Structural Integrity
ISSN: 1757-9864
Article publication date: 30 May 2023
Issue publication date: 24 July 2023
Abstract
Purpose
For coastal bridges, the ability to recover traffic functions after the earthquake has crucial implications for post-disaster reconstruction, which makes resilience become a significant index to evaluate the seismic behavior. However, the deterioration of the material is particularly prominent in coastal bridge, which causes the degradation of the seismic behavior. As far, the research studies on resilience of coastal bridges considering multiple degradation factors and different disaster prevention capability are scarce. For further evaluating the seismic behavior of coastal bridge in the long-term context, the seismic resilience is conducted in this paper with considering multiple durability damage.
Design/methodology/approach
The fuzzy theory and time-varying fragility analysis are combined in this paper to obtain the life-cycle resilience of coastal bridges.
Findings
The results show that durability damage has a remarkable impact on the resilience. After 100 years of service, the seismic resilience of bridge with poor disaster-prevention capability has greatest reduction, about 18%. In addition, the improvement of the disaster prevention capability can stabilize the resilience of the bridge at a higher level.
Originality/value
In this paper, the time-varying fragility analysis of case bridge are evaluated with considering chloride ion erosion and concrete carbonization, firstly. Then, combining fuzzy theory and fragility analysis, the triangular fuzzy values of resilience parameters under different service period are obtained. Finally, the life-cycle resilience of bridge in different disaster prevention capability is analyzed.
Keywords
Acknowledgements
This research was funded by the National Science Foundation of China (No:51608488), Scientific and Technological Project of Henan Province, China (No:202102310268), Zhengzhou University 2022 Annual Basic Research Foundation for Young Teachers, China (No: JC22547025) and the Key Scientific and Technological Research Projects of Henan Province, China (No: 222102320006) and Postdoctoral research grant in Henan Province.
Citation
Liang, Y., Wei, Y., Li, P., Li, L. and Zhao, Z. (2023), "Time-varying seismic resilience analysis of coastal bridges by considering multiple durability damage factors", International Journal of Structural Integrity, Vol. 14 No. 4, pp. 521-543. https://doi.org/10.1108/IJSI-12-2022-0147
Publisher
:Emerald Publishing Limited
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