Shaking Table Test Study on the Earthquake Behavior of High-Speed Railway Bridge Pier with Rounded Rectangular Cross Section

Rounded rectangular cross section piers were widely used for high-speed railway (HSR) bridges in China. However, the performance of such piers under seismic scenarios has not been well studied. To study the earthquake behavior and damage of rounded rectangular cross section piers under different int...

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Bibliographic Details
Published in:Advances in civil engineering 2022, Vol.2022 (1)
Main Authors: Kang, Xin, Zuo, Yongjian, Zeng, Leqiao, Peng, Linna, Wang, Qiliang, Wang, Xiaoxiang, Deng, Libin, Hu, Jia, Li, Zhuo, Li, Likun
Format: Article
Language:English
Subjects:
Bridge piers
Civil engineering
Concrete
Cross-sections
Dimensional analysis
Earthquake damage
Earthquakes
Excitation
Finite element method
High speed rail
Piers
Railway bridges
Railway engineering
Reinforced concrete
Reservoirs
Seismic activity
Seismic design
Shake table tests
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Summary:Rounded rectangular cross section piers were widely used for high-speed railway (HSR) bridges in China. However, the performance of such piers under seismic scenarios has not been well studied. To study the earthquake behavior and damage of rounded rectangular cross section piers under different intensities of earthquake excitation, nine scaled pier specimens were constructed and tested on the shaking table. Experimental results show that the specimen remains elastic (no or slight damaged) for all experimental earthquake scenarios (from 0.45 g to 0.96 g). Finite element (FE) models were developed and validated by the experimental results. Using this FE model, the damage levels of these specimens under severe earthquake excitations (from 1.05 g to 1.95 g) were quantified. Numerical results show that the specimen in transverse direction shows no or slight damage, while repairable damage can be seen in longitudinal direction as the earthquake intensity increases from 1.05 g to 1.65 g. Repairable and unrepairable damage can be seen in transverse and longitudinal direction, respectively, as the earthquake intensity increases to 1.95 g. Researchers can make good use of these findings for better earthquake design or protection of this type of HSR piers in the future.
ISSN:1687-8086
1687-8094
DOI:10.1155/2022/7034299