Abstract
In this paper, an optimization approach for the design of moment-resisting frames (MRFs) with nonlinear fluid viscous dampers (FVDs) is presented. The objective of the optimization is to minimize the cost function, considered the cost of steel and dampers. The topology and properties of the dampers and the cross-section properties of each element are considered as design variables. The expected loss of the building is considered as a performance constraint, where the PEER framework is utilized. The structural response is evaluated using nonlinear time history analysis (NTHA), accounting for both the nonlinear behavior of the frame elements and dampers. The optimization process relies on a first-order optimization approach; the adjoint sensitivity analysis is adopted to derive the gradients of the problem efficiently; Discrete material optimization (DMO) functions are utilized to achieve a practical initial design. The numerical example shows the efficiency of the proposed method, where the elements and dampers are simultaneously optimized.
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Idels, O., Lavan, O. (2022). Seismic Design of Steel Moment Resisting Frames with Fluid Viscous Dampers Using Optimization. In: Mazzolani, F.M., Dubina, D., Stratan, A. (eds) Proceedings of the 10th International Conference on Behaviour of Steel Structures in Seismic Areas. STESSA 2022. Lecture Notes in Civil Engineering, vol 262. Springer, Cham. https://doi.org/10.1007/978-3-031-03811-2_77
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DOI: https://doi.org/10.1007/978-3-031-03811-2_77
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