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- W4205287353 abstract "The present paper investigates an innovative seismic-resilient bridge column-footing socket connection (SC) for post-tensioned concrete-filled steel tube (PCFT) columns defined according to the Accelerated Bridge Construction (ABC) requirements. The PCFT-SC column uses an embedded steel tube to dissipate the seismic energy and unbonded post-tensioned (PT) bars to improve the self-centering capacity. Experimental tests were performed on a PCFT-SC column, and the seismic response was compared with the PCFT column with hybrid connection (HC) previously investigated by the authors. The experimental tests confirmed that the PCFT-SC column could develop large strength, stiffness, and ductility capacity and that, compared with the PCFT-HC column, its seismic performance is competitive for drifts up to 2.8%. For larger drifts, the performances are slightly reduced due to the steel tube local buckling and the resulting PT force loss. However, even in these cases, the PCFT-SC column could be preferred due to its constructional advantages. Simplified models of PCFT columns with the SC and HC were developed in OpenSees, including modeling details accounting for the effects of the PT force loss. The numerical results, calibrated against the experimental data, showed the importance of considering PT force loss in the cyclic load analysis for PCFT columns." @default.
- W4205287353 created "2022-01-26" @default.
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- W4205287353 date "2022-02-01" @default.
- W4205287353 modified "2023-09-30" @default.
- W4205287353 title "Experimental and numerical investigations of the seismic behavior of socket and hybrid connections for PCFT bridge columns" @default.
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- W4205287353 doi "https://doi.org/10.1016/j.engstruct.2021.113833" @default.
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