Abstract
The seismic performance of rectangular hollow bridge piers is a significant issue of the high-speed rail project in Taiwan because the flexural ductility and shear capacity of such columns with the configuration of lateral reinforcement used in Taiwan is not clear. In this paper, three prototypes of such piers were tested under a constant axial load and a cyclically reversed horizontal load to investigate their seismic behavior, including flexural ductility, dissipated energy, and shear capacity. An analytical model is developed to predict the momentcurvature curve of sections and the load-displacement relationship of piers. Based on the test results, the seismic behavior of such piers is presented. The test results are also compared to the proposed analytical model. It is found that the ductility factors of the tested piers are in the range from 4.1 to 10.3, and the proposed analytical model can predict the load-displacement relationship of such piers with acceptable accuracy.
Résumé
Les performances sismiques des piles de ponts creux rectangulaires constituent l'une des questions essentielles du projet de rails adaptés pour une grande vitesse, à Taiwan, car la ductilité de flexion et la capacité de cisaillement de tels piliers avec la configuration de renforcement latéral à Taiwan ne sont pas clairement définies. Dans cet article, trois prototypes de piles de ponts creux rectangulaires ont été testés sous charge axiale constante et sous charge horizontale inversée de manière cyclique, afin d'examiner leur comportement sismique, notamment la ductilité de flexion, la dissipation d'énergie et la capacité de cisaillement. Un modèle analytique est développé dans le but de prévoir la courbe moment-courbure de sections et la relation charge-déplacement des piliers. Fondé sur les résultats d'essais, le comportement sismique de tels piles est présenté. Les résultats de ces essais sont également comparés au modèle analytique proposé. Il apparaît que les facteurs de ductilité des piliers sont de l'ordre de 4,1 à 10,3, et que le modèle analytique proposé peut prévoir la relation charge-déplacement de tels piliers avec une précision acceptable.
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Yeh, Y.K., Mo, Y.L. & Yang, C.Y. Full-scale tests on rectangular hollow bridge piers. Mat. Struct. 35, 117–125 (2002). https://doi.org/10.1007/BF02482111
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DOI: https://doi.org/10.1007/BF02482111