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Life-cycle cost based optimal design of fluid viscous dampers

机译：基于生命周期成本的流体粘性阻尼器的优化设计

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A simulation-based, probabilistic framework is discussed in this paper for design of viscous dampers based on life-cycle cost criteria. This framework allows for explicit consideration in the design process of all important nonlinearities for both the dampers and the structural behavior, as well as of all sources of uncertainty related to the seismic hazard. It is based on an assembly-based vulnerability approach for estimating earthquake losses, and on description of the earthquake hazard through stochastic ground motion models, along with predictive relationships that relate their parameters to regional seismicity characteristics. In this setting, the life-cycle cost is quantified by its expected value over the space of the uncertain parameters for the structural and excitation models, and is estimated through stochastic simulation. For the design-optimization an algorithm appropriate for costly global optimization problems is adopted. An illustrative example is presented that considers the optimal life-cycle based design of fluid viscous dampers for retrofitting a three-story concrete structure.
机译：本文讨论了一种基于仿真的概率框架，用于基于生命周期成本标准的粘性阻尼器设计。该框架允许在设计过程中明确考虑阻尼器和结构行为的所有重要非线性，以及与地震危险有关的所有不确定性来源。它基于用于估计地震损失的基于装配的脆弱性方法，并基于随机地震动模型对地震危险的描述，以及将其参数与区域地震活动性特征相关联的预测关系。在这种情况下，生命周期成本由结构和激励模型的不确定参数空间上的期望值量化，并通过随机模拟估算。为了进行设计优化，采用了适合代价高昂的全局优化问题的算法。提出了一个说明性示例，该示例考虑了用于改造三层混凝土结构的基于流体粘性阻尼器的最佳生命周期设计。

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