Optimum design of viscous dissipative links in wall–frame systems

Summary This paper deals with the optimum design of fluid viscous dampers used as dissipative connections in wall–frame structural systems. The analyzed structure is composed of two substructures, the frames and the wall, and it is subject to a seismic acceleration. The optimum design is based on a ‘global protection strategy’, which aims at protecting both the substructures, i.e. both the frame and the wall. In this context, the authors formulate a multi-objective optimum design, where there are two conflicting objective functions: the displacement of the frame and the shear in the wall. Optimum Pareto solution is obtained. For this purpose, a genetic algorithm, the non-dominated sorting genetic algorithm II, is adopted. The proposed method uses a global seismic protection strategy: this is a very important issue in modern technical codes, where several performance requirements are fixed and often conflicting. Copyright © 2015 John Wiley & Sons, Ltd.

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