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10 November 2021 Seismic performance analysis of precast segmental bridge columns with self-centering energy dissipation device
Hui Jiang, Chen Li, Xiaoyu Bai, Guangsong Song
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Proceedings Volume 12050, International Conference on Smart Transportation and City Engineering 2021; 120503W (2021) https://doi.org/10.1117/12.2613685
Event: 2021 International Conference on Smart Transportation and City Engineering, 2021, Chongqing, China
Abstract
Precast segmental bridge columns (PSBC) have been gradually used in various bridge engineering for rapid construction. But current applications are mainly limited to low seismic areas due to the lack of energy dissipation capacity. In this study, the external self-centering energy dissipation device (SCEDD) was applied to improve the seismic capacity of PSBC. The refined solid finite element model was established and tested based on ABAQUS platform. The effects of four parameters of SCEDD, i.e., connection mode, nominal yield force, stiffness of disc springs and whether to install SCEDD at the bottom of the pier, were systematically discussed by quasi-static analysis. The results show that, the ductility of the PSBC can be improved by using hinged SCEDD in comparison with the rigid connection. However, two connection modes have no effects on the maximum strength and initial stiffness of the pier. Moreover, increasing the nominal yield force of SCEDD and the stiffness of disc springs can obviously reduce the ductility of the PSBC. Meanwhile, the potential plastic hinge region moves up. Furthermore, the installation of SCEDD can enhance the energy dissipation capacity of the PSBC, but is still insufficient compared with the cast-in-place (CIP) pier.
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Hui Jiang, Chen Li, Xiaoyu Bai, and Guangsong Song "Seismic performance analysis of precast segmental bridge columns with self-centering energy dissipation device", Proc. SPIE 12050, International Conference on Smart Transportation and City Engineering 2021, 120503W (10 November 2021); https://doi.org/10.1117/12.2613685
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KEYWORDS
Bridges
Finite element methods
Earthquakes
Computer simulations
Numerical analysis
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