TY - JOUR
T1 - Cumulative deformation of high-speed railway bridge pier under repeated earthquakes
AU - Gou, Hongye
AU - Leng, Dan
AU - Bao, Yi
AU - Pu, Qianhui
N1 - Publisher Copyright:
© 2019 Techno-Press, Ltd.
PY - 2019/4/1
Y1 - 2019/4/1
N2 - Residual deformation of high-speed railway bridge piers is cumulative under repeated earthquakes, and influences the safety and ride comfort of high-speed trains. This paper investigates the effects of the peak ground acceleration, longitudinal reinforcement ratio, and axial compression ratio on the cumulative deformation through finite element analysis. A simply-supported beam bridge pier model is established using nonlinear beam-column elements in OpenSees, and validated against a shaking table test. Repeated earthquakes were input in the model. The results show that the cumulative deformation of the bridge piers under repeated earthquakes increases with the peak ground acceleration and the axial compression ratio, and decreases with the longitudinal reinforcement ratio.
AB - Residual deformation of high-speed railway bridge piers is cumulative under repeated earthquakes, and influences the safety and ride comfort of high-speed trains. This paper investigates the effects of the peak ground acceleration, longitudinal reinforcement ratio, and axial compression ratio on the cumulative deformation through finite element analysis. A simply-supported beam bridge pier model is established using nonlinear beam-column elements in OpenSees, and validated against a shaking table test. Repeated earthquakes were input in the model. The results show that the cumulative deformation of the bridge piers under repeated earthquakes increases with the peak ground acceleration and the axial compression ratio, and decreases with the longitudinal reinforcement ratio.
KW - Cumulative residual deformation
KW - High-speed railway bridge piers
KW - Nonlinear numerical model
KW - Parametric studies
KW - Repeated earthquakes
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U2 - 10.12989/eas.2019.16.4.391
DO - 10.12989/eas.2019.16.4.391
M3 - Article
AN - SCOPUS:85064636253
SN - 2092-7614
VL - 16
SP - 391
EP - 399
JO - Earthquake and Structures
JF - Earthquake and Structures
IS - 4
ER -