Transient response of bridge piers under eccentric impact of near-fault earthquake

To study the influence of near-fault earthquake on pier failure, establish a double-span continuous girder bridge. The seismic response of the bridge is calculated using the transient wave function expansion method and the indirect mode function superposition method. Solve the dynamic and displaceme...

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Bibliographic Details
Published in:Scientific reports 2022-10, Vol.12 (1), p.16667-16667, Article 16667
Main Authors: Wang, Zihu, Zeng, Qingyan, Du, Yantao, An, Wenjun
Format: Article
Language:English
Subjects:
639/166/986
639/166/988
639/705/1041
Bridges
Civil engineering
Compression
Deformation
Earthquakes
Fault lines
Humanities and Social Sciences
multidisciplinary
Piers
Science
Science (multidisciplinary)
Seismic activity
Seismic response
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Summary:To study the influence of near-fault earthquake on pier failure, establish a double-span continuous girder bridge. The seismic response of the bridge is calculated using the transient wave function expansion method and the indirect mode function superposition method. Solve the dynamic and displacement responses, and the effect of the vertical separation of the bridge on the eccentric compression of the pier is analyzed. The results show that under the near-fault vertical seismic action, the separation can significantly change the horizontal deformation at the top of the pier, and neglecting the separation may underestimate the eccentric compression of the pier. Calculations for different pier heights and girder spans show that separation has a greater effect on the longitudinal deformation of the pier top. Therefore, the reasonable design of longitudinal limit device on pier top in the near-fault area is helpful to reduce the damage of eccentric bridge impact.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-022-21213-4