Seismic Design of Energy Dissipation Systems for Optimal Structural Performance

摘要：摩擦阻尼器、屈服金属阻尼器、粘弹性阻尼器和粘滞流体阻尼器等几种消能减震装置现在可用作现有结构改造或新结构设计的地震保护系统。 设计这些系统以使其最佳地实现某些性能目标的方法远远落后于其硬件开发。这项研究将开发一种方法来优化几种常用的消能减震系统的位置和设计，以实现一定的结构性能目标。 由于这些设备有其自身的属性和局限性，将考虑两种或更多种不同类型的设备的最佳组合，以从中提取最佳性能。 为了进行最佳搜索，将使用基于遗传算法的程序。 该研究将考虑几个基本的，以及更全面的，性能目标。 本研究成果将为建筑结构耗能减震系统的优化设计提供一种实用的方法。它将促进和加速使用这些有效的系统来设计更安全和经济的建筑结构。

ABSTRACT: Several energy dissipation devices such as friction dampers, yielding metallic dampers, viscoelastic dampers, and viscous fluid dampers are now available as seismic protective systems for retrofitting existing structures or for the design of new structures. Methods to design these systems such that they optimally achieve certain performance objectives are lagging far behind their hardware development. This research will develop a methodology for optimal placement and design of several commonly available energy dissipation systems to achieve certain structural performance objectives. Since these devices have their own attributes and limitations, optimal combination of two or more different types of devices will be considered to extract the best performance from them. For optimal search, the genetic algorithm-based procedures will be used. The research will consider several basic, as well as more comprehensive, performance objectives. The outcome of this research will be a practical methodology for optimal design of energy dissipating systems for building structures. It will facilitate and accelerate the use of these effective systems to design more safe and economical building structures.