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- W3158172765 abstract "In this paper, the probabilistic seismic performance of steel moment-resisting frames (MRFs) equipped with fluid viscous dampers (FVDs) designed based on the deterministic direct displacement-based design (DDBD) method is investigated by taking into account the effect of the aleatory and epistemic uncertainties. For probabilistic analysis, two intensity measure (IM)-based approaches, including the determination of the mean annual frequency (MAF) of exceeding design target and the ratio of factored demand to factored capacity (F.D/F.C) in fragility/hazard design format, have been used. The maximum drift ratio has been selected as the demand parameter, and for controlled structures, the geometric mean of spectral acceleration, Saavg, has been selected as the suitable IM. For numerical analysis, three 4, 8 and 12-story steel MRFs fitted with linear and nonlinear FVDs and designed based on the deterministic DDBD method have been considered. By performing the incremental dynamic analysis (IDA), the exceeding probability and F.D/F.C ratios have been determined for different nonlinearity levels of FVDs. The results show that the seismic performance of the structure designed using DDBD method has been significantly affected by the uncertainties. Moreover, the structures with nonlinear FVDs have a higher exceeding probability and F.D/F.C ratio than linear dampers due to their low damping coefficient in the deterministic DDBD method as well as minor capability of controlling displacements in higher velocities. In addition, considering the epistemic uncertainty has led to an increase in the F.D/F.C ratio up to 20%, while the probabilistic evaluation results altered slightly by the type of input record." @default.
- W3158172765 created "2021-05-10" @default.
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- W3158172765 date "2021-11-01" @default.
- W3158172765 modified "2023-09-26" @default.
- W3158172765 title "Probabilistic seismic performance of steel structures with FVDs designed by DDBD procedure" @default.
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- W3158172765 doi "https://doi.org/10.1016/j.jobe.2021.102581" @default.
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